1 | /* $Id: VBoxCPP.cpp 103384 2024-02-15 12:10:06Z vboxsync $ */
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2 | /** @file
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3 | * VBox Build Tool - A mini C Preprocessor.
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4 | *
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5 | * Purposes to which this preprocessor will be put:
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6 | * - Preprocessig vm.h into dtrace/lib/vm.d so we can access the VM
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7 | * structure (as well as substructures) from DTrace without having
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8 | * to handcraft it all.
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9 | * - Removing \#ifdefs relating to a new feature that has become
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10 | * stable and no longer needs \#ifdef'ing.
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11 | * - Pretty printing preprocessor directives. This will be used by
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12 | * SCM.
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13 | */
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14 |
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15 | /*
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16 | * Copyright (C) 2012-2023 Oracle and/or its affiliates.
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17 | *
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18 | * This file is part of VirtualBox base platform packages, as
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19 | * available from https://www.virtualbox.org.
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20 | *
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21 | * This program is free software; you can redistribute it and/or
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22 | * modify it under the terms of the GNU General Public License
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23 | * as published by the Free Software Foundation, in version 3 of the
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24 | * License.
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25 | *
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26 | * This program is distributed in the hope that it will be useful, but
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27 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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29 | * General Public License for more details.
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30 | *
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31 | * You should have received a copy of the GNU General Public License
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32 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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33 | *
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34 | * SPDX-License-Identifier: GPL-3.0-only
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35 | */
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36 |
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37 |
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38 | /*********************************************************************************************************************************
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39 | * Header Files *
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40 | *********************************************************************************************************************************/
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41 | #include <VBox/VBoxTpG.h>
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42 |
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43 | #include <iprt/alloca.h>
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44 | #include <iprt/assert.h>
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45 | #include <iprt/asm.h>
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46 | #include <iprt/ctype.h>
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47 | #include <iprt/err.h>
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48 | #include <iprt/file.h>
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49 | #include <iprt/getopt.h>
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50 | #include <iprt/initterm.h>
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51 | #include <iprt/list.h>
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52 | #include <iprt/mem.h>
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53 | #include <iprt/message.h>
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54 | #include <iprt/path.h>
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55 | #include <iprt/stream.h>
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56 | #include <iprt/string.h>
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57 |
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58 | #include "scmstream.h"
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59 |
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60 |
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61 | /*********************************************************************************************************************************
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62 | * Defined Constants And Macros *
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63 | *********************************************************************************************************************************/
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64 | /** The bitmap type. */
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65 | #define VBCPP_BITMAP_TYPE uint64_t
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66 | /** The bitmap size as a multiple of VBCPP_BITMAP_TYPE. */
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67 | #define VBCPP_BITMAP_SIZE (128 / 64)
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68 | /** Checks if a bit is set. */
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69 | #define VBCPP_BITMAP_IS_SET(a_bm, a_ch) ASMBitTest(a_bm, (a_ch) & 0x7f)
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70 | /** Sets a bit. */
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71 | #define VBCPP_BITMAP_SET(a_bm, a_ch) ASMBitSet(a_bm, (a_ch) & 0x7f)
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72 | /** Empties the bitmap. */
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73 | #define VBCPP_BITMAP_EMPTY(a_bm) do { (a_bm)[0] = 0; (a_bm)[1] = 0; } while (0)
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74 | /** Joins to bitmaps by OR'ing their values.. */
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75 | #define VBCPP_BITMAP_OR(a_bm1, a_bm2) do { (a_bm1)[0] |= (a_bm2)[0]; (a_bm1)[1] |= (a_bm2)[1]; } while (0)
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76 |
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77 |
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78 | /*********************************************************************************************************************************
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79 | * Structures and Typedefs *
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80 | *********************************************************************************************************************************/
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81 | /** Pointer to the C preprocessor instance data. */
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82 | typedef struct VBCPP *PVBCPP;
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83 |
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84 |
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85 | /**
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86 | * Variable string buffer (very simple version of SCMSTREAM).
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87 | */
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88 | typedef struct VBCPPSTRBUF
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89 | {
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90 | /** The preprocessor instance (for error reporting). */
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91 | struct VBCPP *pThis;
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92 | /** The length of the string in the buffer. */
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93 | size_t cchBuf;
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94 | /** The string storage. */
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95 | char *pszBuf;
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96 | /** Allocated buffer space. */
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97 | size_t cbBufAllocated;
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98 | } VBCPPSTRBUF;
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99 | /** Pointer to a variable string buffer. */
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100 | typedef VBCPPSTRBUF *PVBCPPSTRBUF;
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101 |
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102 |
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103 | /**
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104 | * The preprocessor mode.
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105 | */
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106 | typedef enum VBCPPMODE
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107 | {
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108 | kVBCppMode_Invalid = 0,
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109 | kVBCppMode_Standard,
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110 | kVBCppMode_Selective,
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111 | kVBCppMode_SelectiveD,
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112 | kVBCppMode_End
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113 | } VBCPPMODE;
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114 |
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115 |
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116 | /**
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117 | * A macro (aka define).
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118 | */
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119 | typedef struct VBCPPMACRO
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120 | {
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121 | /** The string space core. */
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122 | RTSTRSPACECORE Core;
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123 | #if 0
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124 | /** For linking macros that have the fExpanding flag set. */
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125 | struct VBCPPMACRO *pUpExpanding;
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126 | #endif
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127 | /** Whether it's a function. */
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128 | bool fFunction;
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129 | /** Variable argument count. */
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130 | bool fVarArg;
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131 | /** Set if originating on the command line. */
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132 | bool fCmdLine;
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133 | /** Set if this macro is currently being expanded and should not be
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134 | * recursively applied. */
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135 | bool fExpanding;
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136 | /** The number of known arguments. */
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137 | uint32_t cArgs;
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138 | /** Pointer to a list of argument names. */
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139 | const char **papszArgs;
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140 | /** Lead character bitmap for the argument names. */
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141 | VBCPP_BITMAP_TYPE bmArgs[VBCPP_BITMAP_SIZE];
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142 | /** The value length. */
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143 | size_t cchValue;
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144 | /** The define value. (This is followed by the name and arguments.) */
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145 | char szValue[1];
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146 | } VBCPPMACRO;
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147 | /** Pointer to a macro. */
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148 | typedef VBCPPMACRO *PVBCPPMACRO;
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149 |
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150 |
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151 | /**
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152 | * Macro expansion data.
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153 | */
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154 | typedef struct VBCPPMACROEXP
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155 | {
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156 | /** The expansion buffer. */
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157 | VBCPPSTRBUF StrBuf;
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158 | #if 0
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159 | /** List of expanding macros (Stack). */
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160 | PVBCPPMACRO pMacroStack;
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161 | #endif
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162 | /** The input stream (in case we want to look for parameter lists). */
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163 | PSCMSTREAM pStrmInput;
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164 | /** Array of argument values. Used when expanding function style macros. */
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165 | char **papszArgs;
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166 | /** The number of argument values current in papszArgs. */
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167 | uint32_t cArgs;
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168 | /** The number of argument values papszArgs can currently hold */
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169 | uint32_t cArgsAlloced;
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170 | } VBCPPMACROEXP;
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171 | /** Pointer to macro expansion data. */
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172 | typedef VBCPPMACROEXP *PVBCPPMACROEXP;
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173 |
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174 |
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175 | /**
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176 | * The vbcppMacroExpandReScan mode of operation.
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177 | */
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178 | typedef enum VBCPPMACRORESCANMODE
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179 | {
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180 | /** Invalid mode. */
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181 | kMacroReScanMode_Invalid = 0,
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182 | /** Normal expansion mode. */
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183 | kMacroReScanMode_Normal,
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184 | /** Replaces known macros and heeds the 'defined' operator. */
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185 | kMacroReScanMode_Expression,
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186 | /** End of valid modes. */
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187 | kMacroReScanMode_End
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188 | } VBCPPMACRORESCANMODE;
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189 |
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190 |
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191 | /**
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192 | * Expression node type.
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193 | */
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194 | typedef enum VBCPPEXPRKIND
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195 | {
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196 | kVBCppExprKind_Invalid = 0,
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197 | kVBCppExprKind_Unary,
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198 | kVBCppExprKind_Binary,
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199 | kVBCppExprKind_Ternary,
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200 | kVBCppExprKind_SignedValue,
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201 | kVBCppExprKind_UnsignedValue,
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202 | kVBCppExprKind_UndefMacroCall,
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203 | kVBCppExprKind_End
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204 | } VBCPPEXPRKIND;
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205 |
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206 |
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207 | /** Macro used for the precedence field. */
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208 | #define VBCPPOP_PRECEDENCE(a_iPrecedence) ((a_iPrecedence) << 8)
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209 | /** Mask for getting the precedence field value. */
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210 | #define VBCPPOP_PRECEDENCE_MASK 0xff00
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211 | /** Operator associativity - Left to right. */
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212 | #define VBCPPOP_L2R (1 << 16)
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213 | /** Operator associativity - Right to left. */
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214 | #define VBCPPOP_R2L (2 << 16)
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215 |
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216 | /**
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217 | * Unary operators.
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218 | */
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219 | typedef enum VBCPPUNARYOP
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220 | {
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221 | kVBCppUnaryOp_Invalid = 0,
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222 | kVBCppUnaryOp_Pluss = VBCPPOP_R2L | VBCPPOP_PRECEDENCE( 3) | 5,
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223 | kVBCppUnaryOp_Minus = VBCPPOP_R2L | VBCPPOP_PRECEDENCE( 3) | 6,
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224 | kVBCppUnaryOp_LogicalNot = VBCPPOP_R2L | VBCPPOP_PRECEDENCE( 3) | 7,
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225 | kVBCppUnaryOp_BitwiseNot = VBCPPOP_R2L | VBCPPOP_PRECEDENCE( 3) | 8,
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226 | kVBCppUnaryOp_Parenthesis = VBCPPOP_R2L | VBCPPOP_PRECEDENCE(15) | 9,
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227 | kVBCppUnaryOp_End
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228 | } VBCPPUNARYOP;
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229 |
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230 | /**
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231 | * Binary operators.
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232 | */
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233 | typedef enum VBCPPBINARYOP
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234 | {
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235 | kVBCppBinary_Invalid = 0,
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236 | kVBCppBinary_Multiplication = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 5) | 2,
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237 | kVBCppBinary_Division = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 5) | 4,
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238 | kVBCppBinary_Modulo = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 5) | 5,
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239 | kVBCppBinary_Addition = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 6) | 6,
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240 | kVBCppBinary_Subtraction = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 6) | 7,
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241 | kVBCppBinary_LeftShift = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 7) | 8,
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242 | kVBCppBinary_RightShift = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 7) | 9,
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243 | kVBCppBinary_LessThan = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 8) | 10,
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244 | kVBCppBinary_LessThanOrEqual = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 8) | 11,
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245 | kVBCppBinary_GreaterThan = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 8) | 12,
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246 | kVBCppBinary_GreaterThanOrEqual = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 8) | 13,
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247 | kVBCppBinary_EqualTo = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 9) | 14,
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248 | kVBCppBinary_NotEqualTo = VBCPPOP_L2R | VBCPPOP_PRECEDENCE( 9) | 15,
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249 | kVBCppBinary_BitwiseAnd = VBCPPOP_L2R | VBCPPOP_PRECEDENCE(10) | 16,
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250 | kVBCppBinary_BitwiseXor = VBCPPOP_L2R | VBCPPOP_PRECEDENCE(11) | 17,
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251 | kVBCppBinary_BitwiseOr = VBCPPOP_L2R | VBCPPOP_PRECEDENCE(12) | 18,
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252 | kVBCppBinary_LogicalAnd = VBCPPOP_L2R | VBCPPOP_PRECEDENCE(13) | 19,
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253 | kVBCppBinary_LogicalOr = VBCPPOP_L2R | VBCPPOP_PRECEDENCE(14) | 20,
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254 | kVBCppBinary_End
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255 | } VBCPPBINARYOP;
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256 |
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257 | /** The precedence of the ternary operator (expr ? true : false). */
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258 | #define VBCPPTERNAROP_PRECEDENCE VBCPPOP_PRECEDENCE(16)
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259 |
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260 |
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261 | /** Pointer to an expression parsing node. */
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262 | typedef struct VBCPPEXPR *PVBCPPEXPR;
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263 | /**
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264 | * Expression parsing node.
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265 | */
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266 | typedef struct VBCPPEXPR
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267 | {
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268 | /** Parent expression. */
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269 | PVBCPPEXPR pParent;
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270 | /** Whether the expression is complete or not. */
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271 | bool fComplete;
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272 | /** The kind of expression. */
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273 | VBCPPEXPRKIND enmKind;
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274 | /** Kind specific content. */
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275 | union
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276 | {
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277 | /** kVBCppExprKind_Unary */
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278 | struct
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279 | {
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280 | VBCPPUNARYOP enmOperator;
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281 | PVBCPPEXPR pArg;
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282 | } Unary;
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283 |
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284 | /** kVBCppExprKind_Binary */
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285 | struct
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286 | {
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287 | VBCPPBINARYOP enmOperator;
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288 | PVBCPPEXPR pLeft;
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289 | PVBCPPEXPR pRight;
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290 | } Binary;
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291 |
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292 | /** kVBCppExprKind_Ternary */
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293 | struct
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294 | {
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295 | PVBCPPEXPR pExpr;
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296 | PVBCPPEXPR pTrue;
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297 | PVBCPPEXPR pFalse;
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298 | } Ternary;
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299 |
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300 | /** kVBCppExprKind_SignedValue */
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301 | struct
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302 | {
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303 | int64_t s64;
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304 | } SignedValue;
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305 |
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306 | /** kVBCppExprKind_UnsignedValue */
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307 | struct
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308 | {
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309 | uint64_t u64;
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310 | } UnsignedValue;
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311 |
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312 | /** kVBCppExprKind_UndefMacroCall */
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313 | struct
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314 | {
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315 | char *pszName;
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316 | size_t cArgs;
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317 | PVBCPPEXPR *papArgs;
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318 | } UndefMacroCall;
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319 | } u;
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320 | } VBCPPEXPR;
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321 |
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322 |
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323 | /**
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324 | * Operator return statuses.
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325 | */
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326 | typedef enum VBCPPEXPRRET
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327 | {
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328 | kExprRet_Error = -1,
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329 | kExprRet_Ok = 0,
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330 | kExprRet_UnaryOperator,
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331 | kExprRet_Value,
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332 | kExprRet_EndOfExpr,
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333 | kExprRet_End
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334 | } VBCPPEXPRRET;
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335 |
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336 | /**
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337 | * Expression parser context.
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338 | */
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339 | typedef struct VBCPPEXPRPARSER
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340 | {
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341 | /** The current expression posistion. */
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342 | const char *pszCur;
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343 | /** The root node. */
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344 | PVBCPPEXPR pRoot;
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345 | /** The current expression node. */
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346 | PVBCPPEXPR pCur;
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347 | /** Where to insert the next expression. */
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348 | PVBCPPEXPR *ppCur;
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349 | /** The expression. */
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350 | const char *pszExpr;
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351 | /** The number of undefined macros we've encountered while parsing. */
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352 | size_t cUndefined;
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353 | /** Pointer to the C preprocessor instance. */
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354 | PVBCPP pThis;
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355 | } VBCPPEXPRPARSER;
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356 | /** Pointer to an expression parser context. */
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357 | typedef VBCPPEXPRPARSER *PVBCPPEXPRPARSER;
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358 |
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359 |
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360 | /**
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361 | * Evaluation result.
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362 | */
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363 | typedef enum VBCPPEVAL
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364 | {
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365 | kVBCppEval_Invalid = 0,
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366 | kVBCppEval_True,
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367 | kVBCppEval_False,
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368 | kVBCppEval_Undecided,
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369 | kVBCppEval_End
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370 | } VBCPPEVAL;
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371 |
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372 |
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373 | /**
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374 | * The condition kind.
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375 | */
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376 | typedef enum VBCPPCONDKIND
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377 | {
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378 | kVBCppCondKind_Invalid = 0,
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379 | /** \#if expr */
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380 | kVBCppCondKind_If,
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381 | /** \#ifdef define */
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382 | kVBCppCondKind_IfDef,
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383 | /** \#ifndef define */
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384 | kVBCppCondKind_IfNDef,
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385 | /** \#elif expr */
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386 | kVBCppCondKind_ElIf,
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387 | /** The end of valid values. */
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388 | kVBCppCondKind_End
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389 | } VBCPPCONDKIND;
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390 |
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391 |
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392 | /**
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393 | * Conditional stack entry.
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394 | */
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395 | typedef struct VBCPPCOND
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396 | {
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397 | /** The next conditional on the stack. */
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398 | struct VBCPPCOND *pUp;
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399 | /** The kind of conditional. This changes on encountering \#elif. */
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400 | VBCPPCONDKIND enmKind;
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401 | /** Evaluation result. */
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402 | VBCPPEVAL enmResult;
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403 | /** The evaluation result of the whole stack. */
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404 | VBCPPEVAL enmStackResult;
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405 |
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406 | /** Whether we've seen the last else. */
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407 | bool fSeenElse;
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408 | /** Set if we have an else if which has already been decided. */
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409 | bool fElIfDecided;
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410 | /** The nesting level of this condition. */
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411 | uint16_t iLevel;
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412 | /** The nesting level of this condition wrt the ones we keep. */
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413 | uint16_t iKeepLevel;
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414 |
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415 | /** The condition string. (Points within the stream buffer.) */
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416 | const char *pchCond;
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417 | /** The condition length. */
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418 | size_t cchCond;
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419 | } VBCPPCOND;
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420 | /** Pointer to a conditional stack entry. */
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421 | typedef VBCPPCOND *PVBCPPCOND;
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422 |
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423 |
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424 | /**
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425 | * Input buffer stack entry.
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426 | */
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427 | typedef struct VBCPPINPUT
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428 | {
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429 | /** Pointer to the next input on the stack. */
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430 | struct VBCPPINPUT *pUp;
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431 | /** The input stream. */
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432 | SCMSTREAM StrmInput;
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433 | /** Pointer into szName to the part which was specified. */
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434 | const char *pszSpecified;
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435 | /** The input file name with include path. */
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436 | char szName[1];
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437 | } VBCPPINPUT;
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438 | /** Pointer to a input buffer stack entry */
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439 | typedef VBCPPINPUT *PVBCPPINPUT;
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440 |
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441 |
|
---|
442 | /**
|
---|
443 | * The action to take with \#include.
|
---|
444 | */
|
---|
445 | typedef enum VBCPPINCLUDEACTION
|
---|
446 | {
|
---|
447 | kVBCppIncludeAction_Invalid = 0,
|
---|
448 | kVBCppIncludeAction_Include,
|
---|
449 | kVBCppIncludeAction_PassThru,
|
---|
450 | kVBCppIncludeAction_Drop,
|
---|
451 | kVBCppIncludeAction_End
|
---|
452 | } VBCPPINCLUDEACTION;
|
---|
453 |
|
---|
454 |
|
---|
455 | /**
|
---|
456 | * C Preprocessor instance data.
|
---|
457 | */
|
---|
458 | typedef struct VBCPP
|
---|
459 | {
|
---|
460 | /** @name Options
|
---|
461 | * @{ */
|
---|
462 | /** The preprocessing mode. */
|
---|
463 | VBCPPMODE enmMode;
|
---|
464 | /** Whether to keep comments. */
|
---|
465 | bool fKeepComments;
|
---|
466 | /** Whether to respect source defines. */
|
---|
467 | bool fRespectSourceDefines;
|
---|
468 | /** Whether to let source defines overrides the ones on the command
|
---|
469 | * line. */
|
---|
470 | bool fAllowRedefiningCmdLineDefines;
|
---|
471 | /** Whether to pass thru defines. */
|
---|
472 | bool fPassThruDefines;
|
---|
473 | /** Whether to allow undecided conditionals. */
|
---|
474 | bool fUndecidedConditionals;
|
---|
475 | /** Whether to pass thru D pragmas. */
|
---|
476 | bool fPassThruPragmaD;
|
---|
477 | /** Whether to pass thru STD pragmas. */
|
---|
478 | bool fPassThruPragmaSTD;
|
---|
479 | /** Whether to pass thru other pragmas. */
|
---|
480 | bool fPassThruPragmaOther;
|
---|
481 | /** Whether to pass thru \#error directives or execute them. */
|
---|
482 | bool fPassThruError;
|
---|
483 | /** Whether to remove dropped lines from the output. */
|
---|
484 | bool fRemoveDroppedLines;
|
---|
485 | /** Whether to preforme line splicing.
|
---|
486 | * @todo implement line splicing */
|
---|
487 | bool fLineSplicing;
|
---|
488 | /** What to do about include files. */
|
---|
489 | VBCPPINCLUDEACTION enmIncludeAction;
|
---|
490 |
|
---|
491 | /** The number of include directories. */
|
---|
492 | uint32_t cIncludes;
|
---|
493 | /** Array of directories to search for include files. */
|
---|
494 | char **papszIncludes;
|
---|
495 |
|
---|
496 | /** The name of the input file. */
|
---|
497 | const char *pszInput;
|
---|
498 | /** The name of the output file. NULL if stdout. */
|
---|
499 | const char *pszOutput;
|
---|
500 | /** @} */
|
---|
501 |
|
---|
502 | /** The define string space. */
|
---|
503 | RTSTRSPACE StrSpace;
|
---|
504 | /** The string space holding explicitly undefined macros for selective
|
---|
505 | * preprocessing runs. */
|
---|
506 | RTSTRSPACE UndefStrSpace;
|
---|
507 | /** Indicates whether a C-word might need expansion.
|
---|
508 | * The bitmap is indexed by C-word lead character. Bits that are set
|
---|
509 | * indicates that the lead character is used in a \#define that we know and
|
---|
510 | * should expand. */
|
---|
511 | VBCPP_BITMAP_TYPE bmDefined[VBCPP_BITMAP_SIZE];
|
---|
512 |
|
---|
513 | /** The current depth of the conditional stack. */
|
---|
514 | uint32_t cCondStackDepth;
|
---|
515 | /** Conditional stack. */
|
---|
516 | PVBCPPCOND pCondStack;
|
---|
517 | /** The current condition evaluates to kVBCppEval_False, don't output. */
|
---|
518 | bool fIf0Mode;
|
---|
519 | /** Just dropped a line and should maybe drop the current line. */
|
---|
520 | bool fJustDroppedLine;
|
---|
521 |
|
---|
522 | /** Whether the current line could be a preprocessor line.
|
---|
523 | * This is set when EOL is encountered and cleared again when a
|
---|
524 | * non-comment-or-space character is encountered. See vbcppPreprocess. */
|
---|
525 | bool fMaybePreprocessorLine;
|
---|
526 |
|
---|
527 | /** The input stack depth */
|
---|
528 | uint32_t cInputStackDepth;
|
---|
529 | /** The input buffer stack. */
|
---|
530 | PVBCPPINPUT pInputStack;
|
---|
531 |
|
---|
532 | /** The output stream. */
|
---|
533 | SCMSTREAM StrmOutput;
|
---|
534 |
|
---|
535 | /** The status of the whole job, as far as we know. */
|
---|
536 | RTEXITCODE rcExit;
|
---|
537 | /** Whether StrmOutput is valid (for vbcppTerm). */
|
---|
538 | bool fStrmOutputValid;
|
---|
539 | } VBCPP;
|
---|
540 |
|
---|
541 |
|
---|
542 | /*********************************************************************************************************************************
|
---|
543 | * Internal Functions *
|
---|
544 | *********************************************************************************************************************************/
|
---|
545 | static VBCPPEXPRRET vbcppExprParseUnaryOrValue(PVBCPPEXPRPARSER pParser);
|
---|
546 | static PVBCPPMACRO vbcppMacroLookup(PVBCPP pThis, const char *pszDefine, size_t cchDefine);
|
---|
547 | static RTEXITCODE vbcppMacroExpandIt(PVBCPP pThis, PVBCPPMACROEXP pExp, size_t offMacro, PVBCPPMACRO pMacro, size_t offParameters);
|
---|
548 | static RTEXITCODE vbcppMacroExpandReScan(PVBCPP pThis, PVBCPPMACROEXP pExp, VBCPPMACRORESCANMODE enmMode,
|
---|
549 | size_t *pcReplacements, size_t *pcDefinedUnknown);
|
---|
550 | static void vbcppMacroExpandCleanup(PVBCPPMACROEXP pExp);
|
---|
551 |
|
---|
552 |
|
---|
553 |
|
---|
554 | /*
|
---|
555 | *
|
---|
556 | *
|
---|
557 | * Message Handling.
|
---|
558 | * Message Handling.
|
---|
559 | * Message Handling.
|
---|
560 | * Message Handling.
|
---|
561 | * Message Handling.
|
---|
562 | *
|
---|
563 | *
|
---|
564 | */
|
---|
565 |
|
---|
566 |
|
---|
567 | /**
|
---|
568 | * Displays an error message.
|
---|
569 | *
|
---|
570 | * @returns RTEXITCODE_FAILURE
|
---|
571 | * @param pThis The C preprocessor instance.
|
---|
572 | * @param pszMsg The message.
|
---|
573 | * @param va Message arguments.
|
---|
574 | */
|
---|
575 | static RTEXITCODE vbcppErrorV(PVBCPP pThis, const char *pszMsg, va_list va)
|
---|
576 | {
|
---|
577 | NOREF(pThis);
|
---|
578 | if (pThis->pInputStack)
|
---|
579 | {
|
---|
580 | PSCMSTREAM pStrm = &pThis->pInputStack->StrmInput;
|
---|
581 |
|
---|
582 | size_t const off = ScmStreamTell(pStrm);
|
---|
583 | size_t const iLine = ScmStreamTellLine(pStrm);
|
---|
584 | ScmStreamSeekByLine(pStrm, iLine);
|
---|
585 | size_t const offLine = ScmStreamTell(pStrm);
|
---|
586 |
|
---|
587 | RTPrintf("%s:%d:%zd: error: %N.\n", pThis->pInputStack->szName, iLine + 1, off - offLine + 1, pszMsg, va);
|
---|
588 |
|
---|
589 | size_t cchLine;
|
---|
590 | SCMEOL enmEof;
|
---|
591 | const char *pszLine = ScmStreamGetLineByNo(pStrm, iLine, &cchLine, &enmEof);
|
---|
592 | if (pszLine)
|
---|
593 | RTPrintf(" %.*s\n"
|
---|
594 | " %*s^\n",
|
---|
595 | cchLine, pszLine, off - offLine, "");
|
---|
596 |
|
---|
597 | ScmStreamSeekAbsolute(pStrm, off);
|
---|
598 | }
|
---|
599 | else
|
---|
600 | RTMsgErrorV(pszMsg, va);
|
---|
601 | return pThis->rcExit = RTEXITCODE_FAILURE;
|
---|
602 | }
|
---|
603 |
|
---|
604 |
|
---|
605 | /**
|
---|
606 | * Displays an error message.
|
---|
607 | *
|
---|
608 | * @returns RTEXITCODE_FAILURE
|
---|
609 | * @param pThis The C preprocessor instance.
|
---|
610 | * @param pszMsg The message.
|
---|
611 | * @param ... Message arguments.
|
---|
612 | */
|
---|
613 | static RTEXITCODE vbcppError(PVBCPP pThis, const char *pszMsg, ...)
|
---|
614 | {
|
---|
615 | va_list va;
|
---|
616 | va_start(va, pszMsg);
|
---|
617 | RTEXITCODE rcExit = vbcppErrorV(pThis, pszMsg, va);
|
---|
618 | va_end(va);
|
---|
619 | return rcExit;
|
---|
620 | }
|
---|
621 |
|
---|
622 |
|
---|
623 | /**
|
---|
624 | * Displays an error message.
|
---|
625 | *
|
---|
626 | * @returns RTEXITCODE_FAILURE
|
---|
627 | * @param pThis The C preprocessor instance.
|
---|
628 | * @param pszPos Pointer to the offending character.
|
---|
629 | * @param pszMsg The message.
|
---|
630 | * @param ... Message arguments.
|
---|
631 | */
|
---|
632 | static RTEXITCODE vbcppErrorPos(PVBCPP pThis, const char *pszPos, const char *pszMsg, ...)
|
---|
633 | {
|
---|
634 | NOREF(pszPos); NOREF(pThis);
|
---|
635 | va_list va;
|
---|
636 | va_start(va, pszMsg);
|
---|
637 | //RTMsgErrorV(pszMsg, va);
|
---|
638 | RTEXITCODE rcExit = vbcppErrorV(pThis, pszMsg, va);
|
---|
639 | va_end(va);
|
---|
640 | return rcExit;
|
---|
641 | }
|
---|
642 |
|
---|
643 |
|
---|
644 |
|
---|
645 |
|
---|
646 |
|
---|
647 |
|
---|
648 |
|
---|
649 | /*
|
---|
650 | *
|
---|
651 | *
|
---|
652 | * Variable String Buffers.
|
---|
653 | * Variable String Buffers.
|
---|
654 | * Variable String Buffers.
|
---|
655 | * Variable String Buffers.
|
---|
656 | * Variable String Buffers.
|
---|
657 | *
|
---|
658 | *
|
---|
659 | */
|
---|
660 |
|
---|
661 |
|
---|
662 | /**
|
---|
663 | * Initializes a string buffer.
|
---|
664 | *
|
---|
665 | * @param pStrBuf The buffer structure to initialize.
|
---|
666 | * @param pThis The C preprocessor instance.
|
---|
667 | */
|
---|
668 | static void vbcppStrBufInit(PVBCPPSTRBUF pStrBuf, PVBCPP pThis)
|
---|
669 | {
|
---|
670 | pStrBuf->pThis = pThis;
|
---|
671 | pStrBuf->cchBuf = 0;
|
---|
672 | pStrBuf->cbBufAllocated = 0;
|
---|
673 | pStrBuf->pszBuf = NULL;
|
---|
674 | }
|
---|
675 |
|
---|
676 |
|
---|
677 | /**
|
---|
678 | * Deletes a string buffer.
|
---|
679 | *
|
---|
680 | * @param pStrBuf Pointer to the string buffer.
|
---|
681 | */
|
---|
682 | static void vbcppStrBufDelete(PVBCPPSTRBUF pStrBuf)
|
---|
683 | {
|
---|
684 | RTMemFree(pStrBuf->pszBuf);
|
---|
685 | pStrBuf->pszBuf = NULL;
|
---|
686 | }
|
---|
687 |
|
---|
688 |
|
---|
689 | /**
|
---|
690 | * Ensures that sufficient bufferspace is available, growing the buffer if
|
---|
691 | * necessary.
|
---|
692 | *
|
---|
693 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
694 | * @param pStrBuf Pointer to the string buffer.
|
---|
695 | * @param cbMin The minimum buffer size.
|
---|
696 | */
|
---|
697 | static RTEXITCODE vbcppStrBufGrow(PVBCPPSTRBUF pStrBuf, size_t cbMin)
|
---|
698 | {
|
---|
699 | if (pStrBuf->cbBufAllocated >= cbMin)
|
---|
700 | return RTEXITCODE_SUCCESS;
|
---|
701 |
|
---|
702 | size_t cbNew = pStrBuf->cbBufAllocated * 2;
|
---|
703 | if (cbNew < cbMin)
|
---|
704 | cbNew = RT_ALIGN_Z(cbMin, _1K);
|
---|
705 | void *pv = RTMemRealloc(pStrBuf->pszBuf, cbNew);
|
---|
706 | if (!pv)
|
---|
707 | return vbcppError(pStrBuf->pThis, "out of memory (%zu bytes)", cbNew);
|
---|
708 |
|
---|
709 | pStrBuf->pszBuf = (char *)pv;
|
---|
710 | pStrBuf->cbBufAllocated = cbNew;
|
---|
711 | return RTEXITCODE_SUCCESS;
|
---|
712 | }
|
---|
713 |
|
---|
714 |
|
---|
715 | /**
|
---|
716 | * Appends a substring.
|
---|
717 | *
|
---|
718 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
719 | * @param pStrBuf Pointer to the string buffer.
|
---|
720 | * @param pchSrc Pointer to the first character in the substring.
|
---|
721 | * @param cchSrc The length of the substring.
|
---|
722 | */
|
---|
723 | static RTEXITCODE vbcppStrBufAppendN(PVBCPPSTRBUF pStrBuf, const char *pchSrc, size_t cchSrc)
|
---|
724 | {
|
---|
725 | size_t cchBuf = pStrBuf->cchBuf;
|
---|
726 | if (cchBuf + cchSrc + 1 > pStrBuf->cbBufAllocated)
|
---|
727 | {
|
---|
728 | RTEXITCODE rcExit = vbcppStrBufGrow(pStrBuf, cchBuf + cchSrc + 1);
|
---|
729 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
730 | return rcExit;
|
---|
731 | }
|
---|
732 |
|
---|
733 | memcpy(&pStrBuf->pszBuf[cchBuf], pchSrc, cchSrc);
|
---|
734 | cchBuf += cchSrc;
|
---|
735 | pStrBuf->pszBuf[cchBuf] = '\0';
|
---|
736 | pStrBuf->cchBuf = cchBuf;
|
---|
737 |
|
---|
738 | return RTEXITCODE_SUCCESS;
|
---|
739 | }
|
---|
740 |
|
---|
741 |
|
---|
742 | /**
|
---|
743 | * Appends a character.
|
---|
744 | *
|
---|
745 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
746 | * @param pStrBuf Pointer to the string buffer.
|
---|
747 | * @param ch The charater to append.
|
---|
748 | */
|
---|
749 | static RTEXITCODE vbcppStrBufAppendCh(PVBCPPSTRBUF pStrBuf, char ch)
|
---|
750 | {
|
---|
751 | size_t cchBuf = pStrBuf->cchBuf;
|
---|
752 | if (cchBuf + 2 > pStrBuf->cbBufAllocated)
|
---|
753 | {
|
---|
754 | RTEXITCODE rcExit = vbcppStrBufGrow(pStrBuf, cchBuf + 2);
|
---|
755 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
756 | return rcExit;
|
---|
757 | }
|
---|
758 |
|
---|
759 | pStrBuf->pszBuf[cchBuf++] = ch;
|
---|
760 | pStrBuf->pszBuf[cchBuf] = '\0';
|
---|
761 | pStrBuf->cchBuf = cchBuf;
|
---|
762 |
|
---|
763 | return RTEXITCODE_SUCCESS;
|
---|
764 | }
|
---|
765 |
|
---|
766 |
|
---|
767 | /**
|
---|
768 | * Appends a string to the buffer.
|
---|
769 | *
|
---|
770 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
771 | * @param pStrBuf Pointer to the string buffer.
|
---|
772 | * @param psz The string to append.
|
---|
773 | */
|
---|
774 | static RTEXITCODE vbcppStrBufAppend(PVBCPPSTRBUF pStrBuf, const char *psz)
|
---|
775 | {
|
---|
776 | return vbcppStrBufAppendN(pStrBuf, psz, strlen(psz));
|
---|
777 | }
|
---|
778 |
|
---|
779 |
|
---|
780 | /**
|
---|
781 | * Gets the last char in the buffer.
|
---|
782 | *
|
---|
783 | * @returns Last character, 0 if empty.
|
---|
784 | * @param pStrBuf Pointer to the string buffer.
|
---|
785 | */
|
---|
786 | static char vbcppStrBufLastCh(PVBCPPSTRBUF pStrBuf)
|
---|
787 | {
|
---|
788 | if (!pStrBuf->cchBuf)
|
---|
789 | return '\0';
|
---|
790 | return pStrBuf->pszBuf[pStrBuf->cchBuf - 1];
|
---|
791 | }
|
---|
792 |
|
---|
793 |
|
---|
794 |
|
---|
795 |
|
---|
796 |
|
---|
797 |
|
---|
798 |
|
---|
799 | /*
|
---|
800 | *
|
---|
801 | *
|
---|
802 | * C Identifier/Word Parsing.
|
---|
803 | * C Identifier/Word Parsing.
|
---|
804 | * C Identifier/Word Parsing.
|
---|
805 | * C Identifier/Word Parsing.
|
---|
806 | * C Identifier/Word Parsing.
|
---|
807 | *
|
---|
808 | *
|
---|
809 | */
|
---|
810 |
|
---|
811 |
|
---|
812 | /**
|
---|
813 | * Checks if the given character is a valid C identifier lead character.
|
---|
814 | *
|
---|
815 | * @returns true / false.
|
---|
816 | * @param ch The character to inspect.
|
---|
817 | */
|
---|
818 | DECLINLINE(bool) vbcppIsCIdentifierLeadChar(char ch)
|
---|
819 | {
|
---|
820 | return RT_C_IS_ALPHA(ch)
|
---|
821 | || ch == '_';
|
---|
822 | }
|
---|
823 |
|
---|
824 |
|
---|
825 | /**
|
---|
826 | * Checks if the given character is a valid C identifier character.
|
---|
827 | *
|
---|
828 | * @returns true / false.
|
---|
829 | * @param ch The character to inspect.
|
---|
830 | */
|
---|
831 | DECLINLINE(bool) vbcppIsCIdentifierChar(char ch)
|
---|
832 | {
|
---|
833 | return RT_C_IS_ALNUM(ch)
|
---|
834 | || ch == '_';
|
---|
835 | }
|
---|
836 |
|
---|
837 |
|
---|
838 |
|
---|
839 | /**
|
---|
840 | *
|
---|
841 | * @returns @c true if valid, @c false if not. Error message already displayed
|
---|
842 | * on failure.
|
---|
843 | * @param pThis The C preprocessor instance.
|
---|
844 | * @param pchIdentifier The start of the identifier to validate.
|
---|
845 | * @param cchIdentifier The length of the identifier. RTSTR_MAX if not
|
---|
846 | * known.
|
---|
847 | */
|
---|
848 | static bool vbcppValidateCIdentifier(PVBCPP pThis, const char *pchIdentifier, size_t cchIdentifier)
|
---|
849 | {
|
---|
850 | if (cchIdentifier == RTSTR_MAX)
|
---|
851 | cchIdentifier = strlen(pchIdentifier);
|
---|
852 |
|
---|
853 | if (cchIdentifier == 0)
|
---|
854 | {
|
---|
855 | vbcppErrorPos(pThis, pchIdentifier, "Zero length identifier");
|
---|
856 | return false;
|
---|
857 | }
|
---|
858 |
|
---|
859 | if (!vbcppIsCIdentifierLeadChar(*pchIdentifier))
|
---|
860 | {
|
---|
861 | vbcppErrorPos(pThis, pchIdentifier, "Bad lead chararacter in identifier: '%.*s'", cchIdentifier, pchIdentifier);
|
---|
862 | return false;
|
---|
863 | }
|
---|
864 |
|
---|
865 | for (size_t off = 1; off < cchIdentifier; off++)
|
---|
866 | {
|
---|
867 | if (!vbcppIsCIdentifierChar(pchIdentifier[off]))
|
---|
868 | {
|
---|
869 | vbcppErrorPos(pThis, pchIdentifier + off, "Illegal chararacter in identifier: '%.*s' (#%zu)", cchIdentifier, pchIdentifier, off + 1);
|
---|
870 | return false;
|
---|
871 | }
|
---|
872 | }
|
---|
873 |
|
---|
874 | return true;
|
---|
875 | }
|
---|
876 |
|
---|
877 | #if 0
|
---|
878 |
|
---|
879 | /**
|
---|
880 | * Checks if the given character is valid C punctuation.
|
---|
881 | *
|
---|
882 | * @returns true / false.
|
---|
883 | * @param ch The character to inspect.
|
---|
884 | */
|
---|
885 | DECLINLINE(bool) vbcppIsCPunctuationLeadChar(char ch)
|
---|
886 | {
|
---|
887 | switch (ch)
|
---|
888 | {
|
---|
889 | case '!':
|
---|
890 | case '#':
|
---|
891 | case '%':
|
---|
892 | case '&':
|
---|
893 | case '(':
|
---|
894 | case ')':
|
---|
895 | case '*':
|
---|
896 | case '+':
|
---|
897 | case ',':
|
---|
898 | case '-':
|
---|
899 | case '.':
|
---|
900 | case '/':
|
---|
901 | case ':':
|
---|
902 | case ';':
|
---|
903 | case '<':
|
---|
904 | case '=':
|
---|
905 | case '>':
|
---|
906 | case '?':
|
---|
907 | case '[':
|
---|
908 | case ']':
|
---|
909 | case '^':
|
---|
910 | case '{':
|
---|
911 | case '|':
|
---|
912 | case '}':
|
---|
913 | case '~':
|
---|
914 | return true;
|
---|
915 | default:
|
---|
916 | return false;
|
---|
917 | }
|
---|
918 | }
|
---|
919 |
|
---|
920 |
|
---|
921 | /**
|
---|
922 | * Checks if the given string start with valid C punctuation.
|
---|
923 | *
|
---|
924 | * @returns 0 if not, otherwise the length of the punctuation.
|
---|
925 | * @param pch The which start we should evaluate.
|
---|
926 | * @param cchMax The maximum string length.
|
---|
927 | */
|
---|
928 | static size_t vbcppIsCPunctuationLeadChar(const char *psz, size_t cchMax)
|
---|
929 | {
|
---|
930 | if (!cchMax)
|
---|
931 | return 0;
|
---|
932 |
|
---|
933 | switch (psz[0])
|
---|
934 | {
|
---|
935 | case '!':
|
---|
936 | case '*':
|
---|
937 | case '/':
|
---|
938 | case '=':
|
---|
939 | case '^':
|
---|
940 | if (cchMax >= 2 && psz[1] == '=')
|
---|
941 | return 2;
|
---|
942 | return 1;
|
---|
943 |
|
---|
944 | case '#':
|
---|
945 | if (cchMax >= 2 && psz[1] == '#')
|
---|
946 | return 2;
|
---|
947 | return 1;
|
---|
948 |
|
---|
949 | case '%':
|
---|
950 | if (cchMax >= 2 && (psz[1] == '=' || psz[1] == '>'))
|
---|
951 | return 2;
|
---|
952 | if (cchMax >= 2 && psz[1] == ':')
|
---|
953 | {
|
---|
954 | if (cchMax >= 4 && psz[2] == '%' && psz[3] == ':')
|
---|
955 | return 4;
|
---|
956 | return 2;
|
---|
957 | }
|
---|
958 | return 1;
|
---|
959 |
|
---|
960 | case '&':
|
---|
961 | if (cchMax >= 2 && (psz[1] == '=' || psz[1] == '&'))
|
---|
962 | return 2;
|
---|
963 | return 1;
|
---|
964 |
|
---|
965 | case '(':
|
---|
966 | case ')':
|
---|
967 | case ',':
|
---|
968 | case '?':
|
---|
969 | case '[':
|
---|
970 | case ']':
|
---|
971 | case '{':
|
---|
972 | case '}':
|
---|
973 | return 1;
|
---|
974 |
|
---|
975 | case '+':
|
---|
976 | if (cchMax >= 2 && (psz[1] == '=' || psz[1] == '+'))
|
---|
977 | return 2;
|
---|
978 | return 1;
|
---|
979 |
|
---|
980 | case '-':
|
---|
981 | if (cchMax >= 2 && (psz[1] == '=' || psz[1] == '-' || psz[1] == '>'))
|
---|
982 | return 2;
|
---|
983 | return 1;
|
---|
984 |
|
---|
985 | case ':':
|
---|
986 | if (cchMax >= 2 && psz[1] == '>')
|
---|
987 | return 2;
|
---|
988 | return 1;
|
---|
989 |
|
---|
990 | case ';':
|
---|
991 | return 1;
|
---|
992 |
|
---|
993 | case '<':
|
---|
994 | if (cchMax >= 2 && psz[1] == '<')
|
---|
995 | {
|
---|
996 | if (cchMax >= 3 && psz[2] == '=')
|
---|
997 | return 3;
|
---|
998 | return 2;
|
---|
999 | }
|
---|
1000 | if (cchMax >= 2 && (psz[1] == '=' || psz[1] == ':' || psz[1] == '%'))
|
---|
1001 | return 2;
|
---|
1002 | return 1;
|
---|
1003 |
|
---|
1004 | case '.':
|
---|
1005 | if (cchMax >= 3 && psz[1] == '.' && psz[2] == '.')
|
---|
1006 | return 3;
|
---|
1007 | return 1;
|
---|
1008 |
|
---|
1009 | case '>':
|
---|
1010 | if (cchMax >= 2 && psz[1] == '>')
|
---|
1011 | {
|
---|
1012 | if (cchMax >= 3 && psz[2] == '=')
|
---|
1013 | return 3;
|
---|
1014 | return 2;
|
---|
1015 | }
|
---|
1016 | if (cchMax >= 2 && psz[1] == '=')
|
---|
1017 | return 2;
|
---|
1018 | return 1;
|
---|
1019 |
|
---|
1020 | case '|':
|
---|
1021 | if (cchMax >= 2 && (psz[1] == '=' || psz[1] == '|'))
|
---|
1022 | return 2;
|
---|
1023 | return 1;
|
---|
1024 |
|
---|
1025 | case '~':
|
---|
1026 | return 1;
|
---|
1027 |
|
---|
1028 | default:
|
---|
1029 | return 0;
|
---|
1030 | }
|
---|
1031 | }
|
---|
1032 |
|
---|
1033 | #endif
|
---|
1034 |
|
---|
1035 |
|
---|
1036 |
|
---|
1037 |
|
---|
1038 |
|
---|
1039 | /*
|
---|
1040 | *
|
---|
1041 | *
|
---|
1042 | * Output
|
---|
1043 | * Output
|
---|
1044 | * Output
|
---|
1045 | * Output
|
---|
1046 | * Output
|
---|
1047 | *
|
---|
1048 | *
|
---|
1049 | */
|
---|
1050 |
|
---|
1051 |
|
---|
1052 | /**
|
---|
1053 | * Outputs a character.
|
---|
1054 | *
|
---|
1055 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
1056 | * @param pThis The C preprocessor instance.
|
---|
1057 | * @param ch The character to output.
|
---|
1058 | */
|
---|
1059 | static RTEXITCODE vbcppOutputCh(PVBCPP pThis, char ch)
|
---|
1060 | {
|
---|
1061 | int rc = ScmStreamPutCh(&pThis->StrmOutput, ch);
|
---|
1062 | if (RT_SUCCESS(rc))
|
---|
1063 | return RTEXITCODE_SUCCESS;
|
---|
1064 | return vbcppError(pThis, "Output error: %Rrc", rc);
|
---|
1065 | }
|
---|
1066 |
|
---|
1067 |
|
---|
1068 | /**
|
---|
1069 | * Outputs a string.
|
---|
1070 | *
|
---|
1071 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
1072 | * @param pThis The C preprocessor instance.
|
---|
1073 | * @param pch The string.
|
---|
1074 | * @param cch The number of characters to write.
|
---|
1075 | */
|
---|
1076 | static RTEXITCODE vbcppOutputWrite(PVBCPP pThis, const char *pch, size_t cch)
|
---|
1077 | {
|
---|
1078 | int rc = ScmStreamWrite(&pThis->StrmOutput, pch, cch);
|
---|
1079 | if (RT_SUCCESS(rc))
|
---|
1080 | return RTEXITCODE_SUCCESS;
|
---|
1081 | return vbcppError(pThis, "Output error: %Rrc", rc);
|
---|
1082 | }
|
---|
1083 |
|
---|
1084 |
|
---|
1085 | static RTEXITCODE vbcppOutputComment(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart, size_t cchOutputted,
|
---|
1086 | size_t cchMinIndent)
|
---|
1087 | {
|
---|
1088 | RT_NOREF_PV(cchMinIndent); /** @todo cchMinIndent */
|
---|
1089 |
|
---|
1090 | size_t offCur = ScmStreamTell(pStrmInput);
|
---|
1091 | if (offStart < offCur)
|
---|
1092 | {
|
---|
1093 | int rc = ScmStreamSeekAbsolute(pStrmInput, offStart);
|
---|
1094 | AssertRCReturn(rc, vbcppError(pThis, "Input seek error: %Rrc", rc));
|
---|
1095 |
|
---|
1096 | /*
|
---|
1097 | * Use the same indent, if possible.
|
---|
1098 | */
|
---|
1099 | size_t cchIndent = offStart - ScmStreamTellOffsetOfLine(pStrmInput, ScmStreamTellLine(pStrmInput));
|
---|
1100 | if (cchOutputted < cchIndent)
|
---|
1101 | rc = ScmStreamPrintf(&pThis->StrmOutput, "%*s", cchIndent - cchOutputted, "");
|
---|
1102 | else
|
---|
1103 | rc = ScmStreamPutCh(&pThis->StrmOutput, ' ');
|
---|
1104 | if (RT_FAILURE(rc))
|
---|
1105 | return vbcppError(pThis, "Output error: %Rrc", rc);
|
---|
1106 |
|
---|
1107 | /*
|
---|
1108 | * Copy the bytes.
|
---|
1109 | */
|
---|
1110 | while (ScmStreamTell(pStrmInput) < offCur)
|
---|
1111 | {
|
---|
1112 | unsigned ch = ScmStreamGetCh(pStrmInput);
|
---|
1113 | if (ch == ~(unsigned)0)
|
---|
1114 | return vbcppError(pThis, "Input error: %Rrc", rc);
|
---|
1115 | rc = ScmStreamPutCh(&pThis->StrmOutput, ch);
|
---|
1116 | if (RT_FAILURE(rc))
|
---|
1117 | return vbcppError(pThis, "Output error: %Rrc", rc);
|
---|
1118 | }
|
---|
1119 | }
|
---|
1120 |
|
---|
1121 | return RTEXITCODE_SUCCESS;
|
---|
1122 | }
|
---|
1123 |
|
---|
1124 |
|
---|
1125 |
|
---|
1126 |
|
---|
1127 |
|
---|
1128 | /*
|
---|
1129 | *
|
---|
1130 | *
|
---|
1131 | * Input
|
---|
1132 | * Input
|
---|
1133 | * Input
|
---|
1134 | * Input
|
---|
1135 | * Input
|
---|
1136 | *
|
---|
1137 | *
|
---|
1138 | */
|
---|
1139 |
|
---|
1140 |
|
---|
1141 | #if 0 /* unused */
|
---|
1142 | /**
|
---|
1143 | * Skips white spaces, including escaped new-lines.
|
---|
1144 | *
|
---|
1145 | * @param pStrmInput The input stream.
|
---|
1146 | */
|
---|
1147 | static void vbcppProcessSkipWhiteAndEscapedEol(PSCMSTREAM pStrmInput)
|
---|
1148 | {
|
---|
1149 | unsigned chPrev = ~(unsigned)0;
|
---|
1150 | unsigned ch;
|
---|
1151 | while ((ch = ScmStreamPeekCh(pStrmInput)) != ~(unsigned)0)
|
---|
1152 | {
|
---|
1153 | if (ch == '\r' || ch == '\n')
|
---|
1154 | {
|
---|
1155 | if (chPrev != '\\')
|
---|
1156 | break;
|
---|
1157 | chPrev = ch;
|
---|
1158 | ScmStreamSeekByLine(pStrmInput, ScmStreamTellLine(pStrmInput) + 1);
|
---|
1159 | }
|
---|
1160 | else if (RT_C_IS_SPACE(ch))
|
---|
1161 | {
|
---|
1162 | chPrev = ch;
|
---|
1163 | ch = ScmStreamGetCh(pStrmInput);
|
---|
1164 | Assert(ch == chPrev);
|
---|
1165 | }
|
---|
1166 | else
|
---|
1167 | break;
|
---|
1168 | }
|
---|
1169 | }
|
---|
1170 | #endif
|
---|
1171 |
|
---|
1172 |
|
---|
1173 | /**
|
---|
1174 | * Skips white spaces, escaped new-lines and multi line comments.
|
---|
1175 | *
|
---|
1176 | * @param pThis The C preprocessor instance.
|
---|
1177 | * @param pStrmInput The input stream.
|
---|
1178 | */
|
---|
1179 | static RTEXITCODE vbcppProcessSkipWhiteEscapedEolAndComments(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
1180 | {
|
---|
1181 | unsigned chPrev = ~(unsigned)0;
|
---|
1182 | unsigned ch;
|
---|
1183 | while ((ch = ScmStreamPeekCh(pStrmInput)) != ~(unsigned)0)
|
---|
1184 | {
|
---|
1185 | if (!RT_C_IS_SPACE(ch))
|
---|
1186 | {
|
---|
1187 | /* Multi-line Comment? */
|
---|
1188 | if (ch != '/')
|
---|
1189 | break; /* most definitely, not. */
|
---|
1190 |
|
---|
1191 | size_t offSaved = ScmStreamTell(pStrmInput);
|
---|
1192 | ScmStreamGetCh(pStrmInput);
|
---|
1193 | if (ScmStreamPeekCh(pStrmInput) != '*')
|
---|
1194 | {
|
---|
1195 | ScmStreamSeekAbsolute(pStrmInput, offSaved);
|
---|
1196 | break; /* no */
|
---|
1197 | }
|
---|
1198 |
|
---|
1199 | /* Skip to the end of the comment. */
|
---|
1200 | while ((ch = ScmStreamGetCh(pStrmInput)) != ~(unsigned)0)
|
---|
1201 | {
|
---|
1202 | if (ch == '*')
|
---|
1203 | {
|
---|
1204 | ch = ScmStreamGetCh(pStrmInput);
|
---|
1205 | if (ch == '/')
|
---|
1206 | break;
|
---|
1207 | if (ch == ~(unsigned)0)
|
---|
1208 | break;
|
---|
1209 | }
|
---|
1210 | }
|
---|
1211 | if (ch == ~(unsigned)0)
|
---|
1212 | return vbcppError(pThis, "unterminated multi-line comment");
|
---|
1213 | chPrev = '/';
|
---|
1214 | }
|
---|
1215 | /* New line (also matched by RT_C_IS_SPACE). */
|
---|
1216 | else if (ch == '\r' || ch == '\n')
|
---|
1217 | {
|
---|
1218 | /* Stop if not escaped. */
|
---|
1219 | if (chPrev != '\\')
|
---|
1220 | break;
|
---|
1221 | chPrev = ch;
|
---|
1222 | ScmStreamSeekByLine(pStrmInput, ScmStreamTellLine(pStrmInput) + 1);
|
---|
1223 | }
|
---|
1224 | /* Real space char. */
|
---|
1225 | else
|
---|
1226 | {
|
---|
1227 | chPrev = ch;
|
---|
1228 | ch = ScmStreamGetCh(pStrmInput);
|
---|
1229 | Assert(ch == chPrev);
|
---|
1230 | }
|
---|
1231 | }
|
---|
1232 | return RTEXITCODE_SUCCESS;
|
---|
1233 | }
|
---|
1234 |
|
---|
1235 |
|
---|
1236 | /**
|
---|
1237 | * Skips white spaces, escaped new-lines, and multi line comments, then checking
|
---|
1238 | * that we're at the end of a line.
|
---|
1239 | *
|
---|
1240 | * @param pThis The C preprocessor instance.
|
---|
1241 | * @param pStrmInput The input stream.
|
---|
1242 | */
|
---|
1243 | static RTEXITCODE vbcppProcessSkipWhiteEscapedEolAndCommentsCheckEol(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
1244 | {
|
---|
1245 | RTEXITCODE rcExit = vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
1246 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
1247 | {
|
---|
1248 | unsigned ch = ScmStreamPeekCh(pStrmInput);
|
---|
1249 | if ( ch != ~(unsigned)0
|
---|
1250 | && ch != '\r'
|
---|
1251 | && ch != '\n')
|
---|
1252 | rcExit = vbcppError(pThis, "Did not expected anything more on this line");
|
---|
1253 | }
|
---|
1254 | return rcExit;
|
---|
1255 | }
|
---|
1256 |
|
---|
1257 |
|
---|
1258 | /**
|
---|
1259 | * Skips white spaces.
|
---|
1260 | *
|
---|
1261 | * @returns The current location upon return.
|
---|
1262 | * @param pStrmInput The input stream.
|
---|
1263 | */
|
---|
1264 | static size_t vbcppProcessSkipWhite(PSCMSTREAM pStrmInput)
|
---|
1265 | {
|
---|
1266 | unsigned ch;
|
---|
1267 | while ((ch = ScmStreamPeekCh(pStrmInput)) != ~(unsigned)0)
|
---|
1268 | {
|
---|
1269 | if (!RT_C_IS_SPACE(ch) || ch == '\r' || ch == '\n')
|
---|
1270 | break;
|
---|
1271 | unsigned chCheck = ScmStreamGetCh(pStrmInput);
|
---|
1272 | AssertBreak(chCheck == ch);
|
---|
1273 | }
|
---|
1274 | return ScmStreamTell(pStrmInput);
|
---|
1275 | }
|
---|
1276 |
|
---|
1277 |
|
---|
1278 | /**
|
---|
1279 | * Looks for a left parenthesis in the input stream.
|
---|
1280 | *
|
---|
1281 | * Used during macro expansion. Will ignore comments, newlines and other
|
---|
1282 | * whitespace.
|
---|
1283 | *
|
---|
1284 | * @retval true if found. The stream position at opening parenthesis.
|
---|
1285 | * @retval false if not found. The stream position is unchanged.
|
---|
1286 | *
|
---|
1287 | * @param pThis The C preprocessor instance.
|
---|
1288 | * @param pStrmInput The input stream.
|
---|
1289 | */
|
---|
1290 | static bool vbcppInputLookForLeftParenthesis(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
1291 | {
|
---|
1292 | size_t offSaved = ScmStreamTell(pStrmInput);
|
---|
1293 | /*RTEXITCODE rcExit =*/ vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
1294 | unsigned ch = ScmStreamPeekCh(pStrmInput);
|
---|
1295 | if (ch == '(')
|
---|
1296 | return true;
|
---|
1297 |
|
---|
1298 | int rc = ScmStreamSeekAbsolute(pStrmInput, offSaved);
|
---|
1299 | AssertFatalRC(rc);
|
---|
1300 | return false;
|
---|
1301 | }
|
---|
1302 |
|
---|
1303 |
|
---|
1304 | /**
|
---|
1305 | * Skips input until the real end of the current directive line has been
|
---|
1306 | * reached.
|
---|
1307 | *
|
---|
1308 | * This includes multiline comments starting on the same line
|
---|
1309 | *
|
---|
1310 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
1311 | * @param pThis The C preprocessor instance.
|
---|
1312 | * @param pStrmInput The input stream.
|
---|
1313 | * @param poffComment Where to note down the position of the final
|
---|
1314 | * comment. Optional.
|
---|
1315 | */
|
---|
1316 | static RTEXITCODE vbcppInputSkipToEndOfDirectiveLine(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t *poffComment)
|
---|
1317 | {
|
---|
1318 | if (poffComment)
|
---|
1319 | *poffComment = ~(size_t)0;
|
---|
1320 |
|
---|
1321 | RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
|
---|
1322 | bool fInComment = false;
|
---|
1323 | unsigned chPrev = 0;
|
---|
1324 | unsigned ch;
|
---|
1325 | while ((ch = ScmStreamPeekCh(pStrmInput)) != ~(unsigned)0)
|
---|
1326 | {
|
---|
1327 | if (ch == '\r' || ch == '\n')
|
---|
1328 | {
|
---|
1329 | if (chPrev == '\\')
|
---|
1330 | {
|
---|
1331 | ScmStreamSeekByLine(pStrmInput, ScmStreamTellLine(pStrmInput) + 1);
|
---|
1332 | continue;
|
---|
1333 | }
|
---|
1334 | if (!fInComment)
|
---|
1335 | break;
|
---|
1336 | /* The expression continues after multi-line comments. Cool. :-) */
|
---|
1337 | }
|
---|
1338 | else if (!fInComment)
|
---|
1339 | {
|
---|
1340 | if (chPrev == '/' && ch == '*' )
|
---|
1341 | {
|
---|
1342 | fInComment = true;
|
---|
1343 | if (poffComment)
|
---|
1344 | *poffComment = ScmStreamTell(pStrmInput) - 1;
|
---|
1345 | }
|
---|
1346 | else if (chPrev == '/' && ch == '/')
|
---|
1347 | {
|
---|
1348 | if (poffComment)
|
---|
1349 | *poffComment = ScmStreamTell(pStrmInput) - 1;
|
---|
1350 | rcExit = vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
1351 | break; /* done */
|
---|
1352 | }
|
---|
1353 | }
|
---|
1354 | else if (ch == '/' && chPrev == '*')
|
---|
1355 | fInComment = false;
|
---|
1356 |
|
---|
1357 | /* advance */
|
---|
1358 | chPrev = ch;
|
---|
1359 | ch = ScmStreamGetCh(pStrmInput); Assert(ch == chPrev);
|
---|
1360 | }
|
---|
1361 | return rcExit;
|
---|
1362 | }
|
---|
1363 |
|
---|
1364 |
|
---|
1365 | /**
|
---|
1366 | * Processes a multi-line comment.
|
---|
1367 | *
|
---|
1368 | * Must either string the comment or keep it. If the latter, we must refrain
|
---|
1369 | * from replacing C-words in it.
|
---|
1370 | *
|
---|
1371 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
1372 | * @param pThis The C preprocessor instance.
|
---|
1373 | * @param pStrmInput The input stream.
|
---|
1374 | */
|
---|
1375 | static RTEXITCODE vbcppProcessMultiLineComment(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
1376 | {
|
---|
1377 | /* The open comment sequence. */
|
---|
1378 | ScmStreamGetCh(pStrmInput); /* '*' */
|
---|
1379 | RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
|
---|
1380 | if ( pThis->fKeepComments
|
---|
1381 | && !pThis->fIf0Mode)
|
---|
1382 | rcExit = vbcppOutputWrite(pThis, "/*", 2);
|
---|
1383 |
|
---|
1384 | /* The comment.*/
|
---|
1385 | unsigned ch;
|
---|
1386 | while ( rcExit == RTEXITCODE_SUCCESS
|
---|
1387 | && (ch = ScmStreamGetCh(pStrmInput)) != ~(unsigned)0 )
|
---|
1388 | {
|
---|
1389 | if (ch == '*')
|
---|
1390 | {
|
---|
1391 | /* Closing sequence? */
|
---|
1392 | unsigned ch2 = ScmStreamPeekCh(pStrmInput);
|
---|
1393 | if (ch2 == '/')
|
---|
1394 | {
|
---|
1395 | ScmStreamGetCh(pStrmInput);
|
---|
1396 | if ( pThis->fKeepComments
|
---|
1397 | && !pThis->fIf0Mode)
|
---|
1398 | rcExit = vbcppOutputWrite(pThis, "*/", 2);
|
---|
1399 | break;
|
---|
1400 | }
|
---|
1401 | }
|
---|
1402 |
|
---|
1403 | if (ch == '\r' || ch == '\n')
|
---|
1404 | {
|
---|
1405 | if ( ( pThis->fKeepComments
|
---|
1406 | && !pThis->fIf0Mode)
|
---|
1407 | || !pThis->fRemoveDroppedLines
|
---|
1408 | || !ScmStreamIsAtStartOfLine(&pThis->StrmOutput))
|
---|
1409 | rcExit = vbcppOutputCh(pThis, ch);
|
---|
1410 | pThis->fJustDroppedLine = false;
|
---|
1411 | pThis->fMaybePreprocessorLine = true;
|
---|
1412 | }
|
---|
1413 | else if ( pThis->fKeepComments
|
---|
1414 | && !pThis->fIf0Mode)
|
---|
1415 | rcExit = vbcppOutputCh(pThis, ch);
|
---|
1416 |
|
---|
1417 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
1418 | break;
|
---|
1419 | }
|
---|
1420 | return rcExit;
|
---|
1421 | }
|
---|
1422 |
|
---|
1423 |
|
---|
1424 | /**
|
---|
1425 | * Processes a single line comment.
|
---|
1426 | *
|
---|
1427 | * Must either string the comment or keep it. If the latter, we must refrain
|
---|
1428 | * from replacing C-words in it.
|
---|
1429 | *
|
---|
1430 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
1431 | * @param pThis The C preprocessor instance.
|
---|
1432 | * @param pStrmInput The input stream.
|
---|
1433 | */
|
---|
1434 | static RTEXITCODE vbcppProcessOneLineComment(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
1435 | {
|
---|
1436 | RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
|
---|
1437 | SCMEOL enmEol;
|
---|
1438 | size_t cchLine;
|
---|
1439 | const char *pszLine = ScmStreamGetLine(pStrmInput, &cchLine, &enmEol); Assert(pszLine);
|
---|
1440 | pszLine--; cchLine++; /* unfetching the first slash. */
|
---|
1441 | for (;;)
|
---|
1442 | {
|
---|
1443 | if ( pThis->fKeepComments
|
---|
1444 | && !pThis->fIf0Mode)
|
---|
1445 | rcExit = vbcppOutputWrite(pThis, pszLine, cchLine + enmEol);
|
---|
1446 | else if ( !pThis->fIf0Mode
|
---|
1447 | || !pThis->fRemoveDroppedLines
|
---|
1448 | || !ScmStreamIsAtStartOfLine(&pThis->StrmOutput) )
|
---|
1449 | rcExit = vbcppOutputWrite(pThis, pszLine + cchLine, enmEol);
|
---|
1450 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
1451 | break;
|
---|
1452 | if ( cchLine == 0
|
---|
1453 | || pszLine[cchLine - 1] != '\\')
|
---|
1454 | break;
|
---|
1455 |
|
---|
1456 | pszLine = ScmStreamGetLine(pStrmInput, &cchLine, &enmEol);
|
---|
1457 | if (!pszLine)
|
---|
1458 | break;
|
---|
1459 | }
|
---|
1460 | pThis->fJustDroppedLine = false;
|
---|
1461 | pThis->fMaybePreprocessorLine = true;
|
---|
1462 | return rcExit;
|
---|
1463 | }
|
---|
1464 |
|
---|
1465 |
|
---|
1466 | /**
|
---|
1467 | * Processes a double quoted string.
|
---|
1468 | *
|
---|
1469 | * Must not replace any C-words in strings.
|
---|
1470 | *
|
---|
1471 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
1472 | * @param pThis The C preprocessor instance.
|
---|
1473 | * @param pStrmInput The input stream.
|
---|
1474 | */
|
---|
1475 | static RTEXITCODE vbcppProcessStringLitteral(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
1476 | {
|
---|
1477 | RTEXITCODE rcExit = vbcppOutputCh(pThis, '"');
|
---|
1478 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
1479 | {
|
---|
1480 | bool fEscaped = false;
|
---|
1481 | for (;;)
|
---|
1482 | {
|
---|
1483 | unsigned ch = ScmStreamGetCh(pStrmInput);
|
---|
1484 | if (ch == ~(unsigned)0)
|
---|
1485 | {
|
---|
1486 | rcExit = vbcppError(pThis, "Unterminated double quoted string");
|
---|
1487 | break;
|
---|
1488 | }
|
---|
1489 |
|
---|
1490 | rcExit = vbcppOutputCh(pThis, ch);
|
---|
1491 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
1492 | break;
|
---|
1493 |
|
---|
1494 | if (ch == '"' && !fEscaped)
|
---|
1495 | break;
|
---|
1496 | fEscaped = !fEscaped && ch == '\\';
|
---|
1497 | }
|
---|
1498 | }
|
---|
1499 | return rcExit;
|
---|
1500 | }
|
---|
1501 |
|
---|
1502 |
|
---|
1503 | /**
|
---|
1504 | * Processes a single quoted constant.
|
---|
1505 | *
|
---|
1506 | * Must not replace any C-words in character constants.
|
---|
1507 | *
|
---|
1508 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
1509 | * @param pThis The C preprocessor instance.
|
---|
1510 | * @param pStrmInput The input stream.
|
---|
1511 | */
|
---|
1512 | static RTEXITCODE vbcppProcessCharacterConstant(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
1513 | {
|
---|
1514 | RTEXITCODE rcExit = vbcppOutputCh(pThis, '\'');
|
---|
1515 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
1516 | {
|
---|
1517 | bool fEscaped = false;
|
---|
1518 | for (;;)
|
---|
1519 | {
|
---|
1520 | unsigned ch = ScmStreamGetCh(pStrmInput);
|
---|
1521 | if (ch == ~(unsigned)0)
|
---|
1522 | {
|
---|
1523 | rcExit = vbcppError(pThis, "Unterminated singled quoted string");
|
---|
1524 | break;
|
---|
1525 | }
|
---|
1526 |
|
---|
1527 | rcExit = vbcppOutputCh(pThis, ch);
|
---|
1528 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
1529 | break;
|
---|
1530 |
|
---|
1531 | if (ch == '\'' && !fEscaped)
|
---|
1532 | break;
|
---|
1533 | fEscaped = !fEscaped && ch == '\\';
|
---|
1534 | }
|
---|
1535 | }
|
---|
1536 | return rcExit;
|
---|
1537 | }
|
---|
1538 |
|
---|
1539 |
|
---|
1540 | /**
|
---|
1541 | * Processes a integer or floating point number constant.
|
---|
1542 | *
|
---|
1543 | * Must not replace the type suffix.
|
---|
1544 | *
|
---|
1545 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
1546 | * @param pThis The C preprocessor instance.
|
---|
1547 | * @param pStrmInput The input stream.
|
---|
1548 | * @param chFirst The first character.
|
---|
1549 | */
|
---|
1550 | static RTEXITCODE vbcppProcessNumber(PVBCPP pThis, PSCMSTREAM pStrmInput, char chFirst)
|
---|
1551 | {
|
---|
1552 | RTEXITCODE rcExit = vbcppOutputCh(pThis, chFirst);
|
---|
1553 |
|
---|
1554 | unsigned ch;
|
---|
1555 | while ( rcExit == RTEXITCODE_SUCCESS
|
---|
1556 | && (ch = ScmStreamPeekCh(pStrmInput)) != ~(unsigned)0)
|
---|
1557 | {
|
---|
1558 | if ( !vbcppIsCIdentifierChar(ch)
|
---|
1559 | && ch != '.')
|
---|
1560 | break;
|
---|
1561 |
|
---|
1562 | unsigned ch2 = ScmStreamGetCh(pStrmInput);
|
---|
1563 | AssertBreakStmt(ch2 == ch, rcExit = vbcppError(pThis, "internal error"));
|
---|
1564 | rcExit = vbcppOutputCh(pThis, ch);
|
---|
1565 | }
|
---|
1566 |
|
---|
1567 | return rcExit;
|
---|
1568 | }
|
---|
1569 |
|
---|
1570 |
|
---|
1571 | /**
|
---|
1572 | * Processes a identifier, possibly replacing it with a definition.
|
---|
1573 | *
|
---|
1574 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
1575 | * @param pThis The C preprocessor instance.
|
---|
1576 | * @param pStrmInput The input stream.
|
---|
1577 | */
|
---|
1578 | static RTEXITCODE vbcppProcessIdentifier(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
1579 | {
|
---|
1580 | RTEXITCODE rcExit;
|
---|
1581 | size_t cchDefine;
|
---|
1582 | const char *pchDefine = ScmStreamCGetWordM1(pStrmInput, &cchDefine);
|
---|
1583 | AssertReturn(pchDefine, vbcppError(pThis, "Internal error in ScmStreamCGetWordM1"));
|
---|
1584 |
|
---|
1585 | /*
|
---|
1586 | * Does this look like a define we know?
|
---|
1587 | */
|
---|
1588 | PVBCPPMACRO pMacro = vbcppMacroLookup(pThis, pchDefine, cchDefine);
|
---|
1589 | if ( pMacro
|
---|
1590 | && ( !pMacro->fFunction
|
---|
1591 | || vbcppInputLookForLeftParenthesis(pThis, pStrmInput)) )
|
---|
1592 | {
|
---|
1593 | /*
|
---|
1594 | * Expand it.
|
---|
1595 | */
|
---|
1596 | VBCPPMACROEXP ExpCtx;
|
---|
1597 | #if 0
|
---|
1598 | ExpCtx.pMacroStack = NULL;
|
---|
1599 | #endif
|
---|
1600 | ExpCtx.pStrmInput = pStrmInput;
|
---|
1601 | ExpCtx.papszArgs = NULL;
|
---|
1602 | ExpCtx.cArgs = 0;
|
---|
1603 | ExpCtx.cArgsAlloced = 0;
|
---|
1604 | vbcppStrBufInit(&ExpCtx.StrBuf, pThis);
|
---|
1605 | rcExit = vbcppStrBufAppendN(&ExpCtx.StrBuf, pchDefine, cchDefine);
|
---|
1606 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
1607 | rcExit = vbcppMacroExpandIt(pThis, &ExpCtx, 0 /* offset */, pMacro, cchDefine);
|
---|
1608 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
1609 | rcExit = vbcppMacroExpandReScan(pThis, &ExpCtx, kMacroReScanMode_Normal, NULL, NULL);
|
---|
1610 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
1611 | {
|
---|
1612 | /*
|
---|
1613 | * Insert it into the output stream. Make sure there is a
|
---|
1614 | * whitespace following it.
|
---|
1615 | */
|
---|
1616 | int rc = ScmStreamWrite(&pThis->StrmOutput, ExpCtx.StrBuf.pszBuf, ExpCtx.StrBuf.cchBuf);
|
---|
1617 | if (RT_SUCCESS(rc))
|
---|
1618 | {
|
---|
1619 | unsigned chAfter = ScmStreamPeekCh(pStrmInput);
|
---|
1620 | if (chAfter != ~(unsigned)0 && !RT_C_IS_SPACE(chAfter))
|
---|
1621 | rcExit = vbcppOutputCh(pThis, ' ');
|
---|
1622 | }
|
---|
1623 | else
|
---|
1624 | rcExit = vbcppError(pThis, "Output error: %Rrc", rc);
|
---|
1625 | }
|
---|
1626 | vbcppMacroExpandCleanup(&ExpCtx);
|
---|
1627 | }
|
---|
1628 | else
|
---|
1629 | {
|
---|
1630 | /*
|
---|
1631 | * Not a macro or a function-macro name match but no invocation, just
|
---|
1632 | * output the text unchanged.
|
---|
1633 | */
|
---|
1634 | int rc = ScmStreamWrite(&pThis->StrmOutput, pchDefine, cchDefine);
|
---|
1635 | if (RT_SUCCESS(rc))
|
---|
1636 | rcExit = RTEXITCODE_SUCCESS;
|
---|
1637 | else
|
---|
1638 | rcExit = vbcppError(pThis, "Output error: %Rrc", rc);
|
---|
1639 | }
|
---|
1640 | return rcExit;
|
---|
1641 | }
|
---|
1642 |
|
---|
1643 |
|
---|
1644 |
|
---|
1645 |
|
---|
1646 |
|
---|
1647 |
|
---|
1648 |
|
---|
1649 | /*
|
---|
1650 | *
|
---|
1651 | *
|
---|
1652 | * D E F I N E S / M A C R O S
|
---|
1653 | * D E F I N E S / M A C R O S
|
---|
1654 | * D E F I N E S / M A C R O S
|
---|
1655 | * D E F I N E S / M A C R O S
|
---|
1656 | * D E F I N E S / M A C R O S
|
---|
1657 | *
|
---|
1658 | *
|
---|
1659 | */
|
---|
1660 |
|
---|
1661 |
|
---|
1662 | /**
|
---|
1663 | * Checks if a define exists.
|
---|
1664 | *
|
---|
1665 | * @returns true or false.
|
---|
1666 | * @param pThis The C preprocessor instance.
|
---|
1667 | * @param pszDefine The define name and optionally the argument
|
---|
1668 | * list.
|
---|
1669 | * @param cchDefine The length of the name. RTSTR_MAX is ok.
|
---|
1670 | */
|
---|
1671 | static bool vbcppMacroExists(PVBCPP pThis, const char *pszDefine, size_t cchDefine)
|
---|
1672 | {
|
---|
1673 | return cchDefine > 0
|
---|
1674 | && VBCPP_BITMAP_IS_SET(pThis->bmDefined, *pszDefine)
|
---|
1675 | && RTStrSpaceGetN(&pThis->StrSpace, pszDefine, cchDefine) != NULL;
|
---|
1676 | }
|
---|
1677 |
|
---|
1678 |
|
---|
1679 | /**
|
---|
1680 | * Looks up a define.
|
---|
1681 | *
|
---|
1682 | * @returns Pointer to the define if found, NULL if not.
|
---|
1683 | * @param pThis The C preprocessor instance.
|
---|
1684 | * @param pszDefine The define name and optionally the argument
|
---|
1685 | * list.
|
---|
1686 | * @param cchDefine The length of the name. RTSTR_MAX is ok.
|
---|
1687 | */
|
---|
1688 | static PVBCPPMACRO vbcppMacroLookup(PVBCPP pThis, const char *pszDefine, size_t cchDefine)
|
---|
1689 | {
|
---|
1690 | if (!cchDefine)
|
---|
1691 | return NULL;
|
---|
1692 | if (!VBCPP_BITMAP_IS_SET(pThis->bmDefined, *pszDefine))
|
---|
1693 | return NULL;
|
---|
1694 | return (PVBCPPMACRO)RTStrSpaceGetN(&pThis->StrSpace, pszDefine, cchDefine);
|
---|
1695 | }
|
---|
1696 |
|
---|
1697 |
|
---|
1698 | static uint32_t vbcppMacroLookupArg(PVBCPPMACRO pMacro, const char *pchName, size_t cchName)
|
---|
1699 | {
|
---|
1700 | Assert(cchName > 0);
|
---|
1701 |
|
---|
1702 | char const ch = *pchName;
|
---|
1703 | for (uint32_t i = 0; i < pMacro->cArgs; i++)
|
---|
1704 | if ( pMacro->papszArgs[i][0] == ch
|
---|
1705 | && !strncmp(pMacro->papszArgs[i], pchName, cchName)
|
---|
1706 | && pMacro->papszArgs[i][cchName] == '\0')
|
---|
1707 | return i;
|
---|
1708 |
|
---|
1709 | if ( pMacro->fVarArg
|
---|
1710 | && cchName == sizeof("__VA_ARGS__") - 1
|
---|
1711 | && !strncmp(pchName, "__VA_ARGS__", sizeof("__VA_ARGS__") - 1) )
|
---|
1712 | return pMacro->cArgs;
|
---|
1713 |
|
---|
1714 | return UINT32_MAX;
|
---|
1715 | }
|
---|
1716 |
|
---|
1717 |
|
---|
1718 | static RTEXITCODE vbcppMacroExpandReplace(PVBCPP pThis, PVBCPPMACROEXP pExp, size_t off, size_t cchToReplace,
|
---|
1719 | const char *pchReplacement, size_t cchReplacement)
|
---|
1720 | {
|
---|
1721 | RT_NOREF_PV(pThis);
|
---|
1722 |
|
---|
1723 | /*
|
---|
1724 | * Figure how much space we actually need.
|
---|
1725 | * (Hope this whitespace stuff is correct...)
|
---|
1726 | */
|
---|
1727 | bool const fLeadingSpace = off > 0
|
---|
1728 | && !RT_C_IS_SPACE(pExp->StrBuf.pszBuf[off - 1]);
|
---|
1729 | bool const fTrailingSpace = off + cchToReplace < pExp->StrBuf.cchBuf
|
---|
1730 | && !RT_C_IS_SPACE(pExp->StrBuf.pszBuf[off + cchToReplace]);
|
---|
1731 | size_t const cchActualReplacement = fLeadingSpace + cchReplacement + fTrailingSpace;
|
---|
1732 |
|
---|
1733 | /*
|
---|
1734 | * Adjust the buffer size and contents.
|
---|
1735 | */
|
---|
1736 | if (cchActualReplacement > cchToReplace)
|
---|
1737 | {
|
---|
1738 | size_t const offMore = cchActualReplacement - cchToReplace;
|
---|
1739 |
|
---|
1740 | /* Ensure enough buffer space. */
|
---|
1741 | size_t cbMinBuf = offMore + pExp->StrBuf.cchBuf + 1;
|
---|
1742 | RTEXITCODE rcExit = vbcppStrBufGrow(&pExp->StrBuf, cbMinBuf);
|
---|
1743 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
1744 | return rcExit;
|
---|
1745 |
|
---|
1746 | /* Push the chars following the replacement area down to make room. */
|
---|
1747 | memmove(&pExp->StrBuf.pszBuf[off + cchToReplace + offMore],
|
---|
1748 | &pExp->StrBuf.pszBuf[off + cchToReplace],
|
---|
1749 | pExp->StrBuf.cchBuf - off - cchToReplace + 1);
|
---|
1750 | pExp->StrBuf.cchBuf += offMore;
|
---|
1751 |
|
---|
1752 | }
|
---|
1753 | else if (cchActualReplacement < cchToReplace)
|
---|
1754 | {
|
---|
1755 | size_t const offLess = cchToReplace - cchActualReplacement;
|
---|
1756 |
|
---|
1757 | /* Pull the chars following the replacement area up. */
|
---|
1758 | memmove(&pExp->StrBuf.pszBuf[off + cchToReplace - offLess],
|
---|
1759 | &pExp->StrBuf.pszBuf[off + cchToReplace],
|
---|
1760 | pExp->StrBuf.cchBuf - off - cchToReplace + 1);
|
---|
1761 | pExp->StrBuf.cchBuf -= offLess;
|
---|
1762 | }
|
---|
1763 |
|
---|
1764 | /*
|
---|
1765 | * Insert the replacement string.
|
---|
1766 | */
|
---|
1767 | char *pszCur = &pExp->StrBuf.pszBuf[off];
|
---|
1768 | if (fLeadingSpace)
|
---|
1769 | *pszCur++ = ' ';
|
---|
1770 | memcpy(pszCur, pchReplacement, cchReplacement);
|
---|
1771 | if (fTrailingSpace)
|
---|
1772 | *pszCur++ = ' ';
|
---|
1773 |
|
---|
1774 | Assert(strlen(pExp->StrBuf.pszBuf) == pExp->StrBuf.cchBuf);
|
---|
1775 |
|
---|
1776 | return RTEXITCODE_SUCCESS;
|
---|
1777 | }
|
---|
1778 |
|
---|
1779 |
|
---|
1780 | static unsigned vbcppMacroExpandPeekCh(PVBCPPMACROEXP pExp, size_t *poff)
|
---|
1781 | {
|
---|
1782 | size_t off = *poff;
|
---|
1783 | if (off >= pExp->StrBuf.cchBuf)
|
---|
1784 | return pExp->pStrmInput ? ScmStreamPeekCh(pExp->pStrmInput) : ~(unsigned)0;
|
---|
1785 | return pExp->StrBuf.pszBuf[off];
|
---|
1786 | }
|
---|
1787 |
|
---|
1788 |
|
---|
1789 | static unsigned vbcppMacroExpandGetCh(PVBCPPMACROEXP pExp, size_t *poff)
|
---|
1790 | {
|
---|
1791 | size_t off = *poff;
|
---|
1792 | if (off >= pExp->StrBuf.cchBuf)
|
---|
1793 | return pExp->pStrmInput ? ScmStreamGetCh(pExp->pStrmInput) : ~(unsigned)0;
|
---|
1794 | *poff = off + 1;
|
---|
1795 | return pExp->StrBuf.pszBuf[off];
|
---|
1796 | }
|
---|
1797 |
|
---|
1798 |
|
---|
1799 | static RTEXITCODE vbcppMacroExpandSkipEolEx(PVBCPP pThis, PVBCPPMACROEXP pExp, size_t *poff, unsigned chFirst)
|
---|
1800 | {
|
---|
1801 | if (chFirst == '\r')
|
---|
1802 | {
|
---|
1803 | unsigned ch2 = vbcppMacroExpandPeekCh(pExp, poff);
|
---|
1804 | if (ch2 == '\n')
|
---|
1805 | {
|
---|
1806 | ch2 = ScmStreamGetCh(pExp->pStrmInput);
|
---|
1807 | AssertReturn(ch2 == '\n', vbcppError(pThis, "internal error"));
|
---|
1808 | }
|
---|
1809 | }
|
---|
1810 | return RTEXITCODE_SUCCESS;
|
---|
1811 | }
|
---|
1812 |
|
---|
1813 |
|
---|
1814 | static RTEXITCODE vbcppMacroExpandSkipEol(PVBCPP pThis, PVBCPPMACROEXP pExp, size_t *poff)
|
---|
1815 | {
|
---|
1816 | unsigned ch = vbcppMacroExpandGetCh(pExp, poff);
|
---|
1817 | AssertReturn(ch == '\r' || ch == '\n', vbcppError(pThis, "internal error"));
|
---|
1818 | return vbcppMacroExpandSkipEolEx(pThis, pExp, poff, ch);
|
---|
1819 | }
|
---|
1820 |
|
---|
1821 |
|
---|
1822 | static RTEXITCODE vbcppMacroExpandSkipCommentLine(PVBCPP pThis, PVBCPPMACROEXP pExp, size_t *poff)
|
---|
1823 | {
|
---|
1824 | unsigned ch = vbcppMacroExpandGetCh(pExp, poff);
|
---|
1825 | AssertReturn(ch == '/', vbcppError(pThis, "Internal error - expected '/' got '%c'", ch));
|
---|
1826 |
|
---|
1827 | unsigned chPrev = 0;
|
---|
1828 | while ((ch = vbcppMacroExpandGetCh(pExp, poff)) != ~(unsigned)0)
|
---|
1829 | {
|
---|
1830 | if (ch == '\r' || ch == '\n')
|
---|
1831 | {
|
---|
1832 | RTEXITCODE rcExit = vbcppMacroExpandSkipEolEx(pThis, pExp, poff, ch);
|
---|
1833 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
1834 | return rcExit;
|
---|
1835 | if (chPrev != '\\')
|
---|
1836 | break;
|
---|
1837 | }
|
---|
1838 |
|
---|
1839 | chPrev = ch;
|
---|
1840 | }
|
---|
1841 | return RTEXITCODE_SUCCESS;
|
---|
1842 | }
|
---|
1843 |
|
---|
1844 |
|
---|
1845 | static RTEXITCODE vbcppMacroExpandSkipComment(PVBCPP pThis, PVBCPPMACROEXP pExp, size_t *poff)
|
---|
1846 | {
|
---|
1847 | unsigned ch = vbcppMacroExpandGetCh(pExp, poff);
|
---|
1848 | AssertReturn(ch == '*', vbcppError(pThis, "Internal error - expected '*' got '%c'", ch));
|
---|
1849 |
|
---|
1850 | unsigned chPrev2 = 0;
|
---|
1851 | unsigned chPrev = 0;
|
---|
1852 | while ((ch = vbcppMacroExpandGetCh(pExp, poff)) != ~(unsigned)0)
|
---|
1853 | {
|
---|
1854 | if (ch == '/' && chPrev == '*')
|
---|
1855 | break;
|
---|
1856 |
|
---|
1857 | if (ch == '\r' || ch == '\n')
|
---|
1858 | {
|
---|
1859 | RTEXITCODE rcExit = vbcppMacroExpandSkipEolEx(pThis, pExp, poff, ch);
|
---|
1860 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
1861 | return rcExit;
|
---|
1862 | if (chPrev == '\\')
|
---|
1863 | {
|
---|
1864 | chPrev = chPrev2; /* for line splicing */
|
---|
1865 | continue;
|
---|
1866 | }
|
---|
1867 | }
|
---|
1868 |
|
---|
1869 | chPrev2 = chPrev;
|
---|
1870 | chPrev = ch;
|
---|
1871 | }
|
---|
1872 | return RTEXITCODE_SUCCESS;
|
---|
1873 | }
|
---|
1874 |
|
---|
1875 |
|
---|
1876 | static RTEXITCODE vbcppMacroExpandGrowArgArray(PVBCPP pThis, PVBCPPMACROEXP pExp, uint32_t cMinArgs)
|
---|
1877 | {
|
---|
1878 | if (cMinArgs > pExp->cArgsAlloced)
|
---|
1879 | {
|
---|
1880 | void *pv = RTMemRealloc(pExp->papszArgs, cMinArgs * sizeof(char *));
|
---|
1881 | if (!pv)
|
---|
1882 | return vbcppError(pThis, "out of memory");
|
---|
1883 | pExp->papszArgs = (char **)pv;
|
---|
1884 | pExp->cArgsAlloced = cMinArgs;
|
---|
1885 | }
|
---|
1886 | return RTEXITCODE_SUCCESS;
|
---|
1887 | }
|
---|
1888 |
|
---|
1889 |
|
---|
1890 | static RTEXITCODE vbcppMacroExpandAddEmptyParameter(PVBCPP pThis, PVBCPPMACROEXP pExp)
|
---|
1891 | {
|
---|
1892 | RTEXITCODE rcExit = vbcppMacroExpandGrowArgArray(pThis, pExp, pExp->cArgs + 1);
|
---|
1893 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
1894 | {
|
---|
1895 | char *pszArg = (char *)RTMemAllocZ(1);
|
---|
1896 | if (pszArg)
|
---|
1897 | pExp->papszArgs[pExp->cArgs++] = pszArg;
|
---|
1898 | else
|
---|
1899 | rcExit = vbcppError(pThis, "out of memory");
|
---|
1900 | }
|
---|
1901 | return rcExit;
|
---|
1902 | }
|
---|
1903 |
|
---|
1904 |
|
---|
1905 | static RTEXITCODE vbcppMacroExpandGatherParameters(PVBCPP pThis, PVBCPPMACROEXP pExp, size_t *poff, uint32_t cArgsHint)
|
---|
1906 | {
|
---|
1907 | RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
|
---|
1908 |
|
---|
1909 | /*
|
---|
1910 | * Free previous argument values.
|
---|
1911 | */
|
---|
1912 | while (pExp->cArgs > 0)
|
---|
1913 | {
|
---|
1914 | RTMemFree(pExp->papszArgs[--pExp->cArgs]);
|
---|
1915 | pExp->papszArgs[pExp->cArgs] = NULL;
|
---|
1916 | }
|
---|
1917 |
|
---|
1918 | /*
|
---|
1919 | * The current character should be an opening parenthsis.
|
---|
1920 | */
|
---|
1921 | unsigned ch = vbcppMacroExpandGetCh(pExp, poff);
|
---|
1922 | if (ch != '(')
|
---|
1923 | return vbcppError(pThis, "Internal error - expected '(', found '%c' (#x)", ch, ch);
|
---|
1924 |
|
---|
1925 | /*
|
---|
1926 | * Parse the argument list.
|
---|
1927 | */
|
---|
1928 | char chQuote = 0;
|
---|
1929 | size_t cbArgAlloc = 0;
|
---|
1930 | size_t cchArg = 0;
|
---|
1931 | char *pszArg = NULL;
|
---|
1932 | size_t cParentheses = 1;
|
---|
1933 | unsigned chPrev = 0;
|
---|
1934 | while ((ch = vbcppMacroExpandGetCh(pExp, poff)) != ~(unsigned)0)
|
---|
1935 | {
|
---|
1936 | /** @todo check for '#directives'! */
|
---|
1937 | if (ch == ')' && !chQuote)
|
---|
1938 | {
|
---|
1939 | Assert(cParentheses >= 1);
|
---|
1940 | cParentheses--;
|
---|
1941 |
|
---|
1942 | /* The end? */
|
---|
1943 | if (!cParentheses)
|
---|
1944 | {
|
---|
1945 | if (cchArg)
|
---|
1946 | while (cchArg > 0 && RT_C_IS_SPACE(pszArg[cchArg - 1]))
|
---|
1947 | pszArg[--cchArg] = '\0';
|
---|
1948 | else if (pExp->cArgs || cArgsHint > 0)
|
---|
1949 | rcExit = vbcppMacroExpandAddEmptyParameter(pThis, pExp);
|
---|
1950 | break;
|
---|
1951 | }
|
---|
1952 | }
|
---|
1953 | else if (ch == '(' && !chQuote)
|
---|
1954 | cParentheses++;
|
---|
1955 | else if (ch == ',' && cParentheses == 1 && !chQuote)
|
---|
1956 | {
|
---|
1957 | /* End of one argument, start of the next. */
|
---|
1958 | if (cchArg)
|
---|
1959 | while (cchArg > 0 && RT_C_IS_SPACE(pszArg[cchArg - 1]))
|
---|
1960 | pszArg[--cchArg] = '\0';
|
---|
1961 | else
|
---|
1962 | {
|
---|
1963 | rcExit = vbcppMacroExpandAddEmptyParameter(pThis, pExp);
|
---|
1964 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
1965 | break;
|
---|
1966 | }
|
---|
1967 |
|
---|
1968 | cbArgAlloc = 0;
|
---|
1969 | cchArg = 0;
|
---|
1970 | pszArg = NULL;
|
---|
1971 | continue;
|
---|
1972 | }
|
---|
1973 | else if (ch == '/' && !chQuote)
|
---|
1974 | {
|
---|
1975 | /* Comment? */
|
---|
1976 | unsigned ch2 = vbcppMacroExpandPeekCh(pExp, poff);
|
---|
1977 | /** @todo This ain't right wrt line splicing. */
|
---|
1978 | if (ch2 == '/' || ch2 == '*')
|
---|
1979 | {
|
---|
1980 | if (ch2 == '/')
|
---|
1981 | rcExit = vbcppMacroExpandSkipCommentLine(pThis, pExp, poff);
|
---|
1982 | else
|
---|
1983 | rcExit = vbcppMacroExpandSkipComment(pThis, pExp, poff);
|
---|
1984 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
1985 | break;
|
---|
1986 | continue;
|
---|
1987 | }
|
---|
1988 | }
|
---|
1989 | else if (ch == '"')
|
---|
1990 | {
|
---|
1991 | if (!chQuote)
|
---|
1992 | chQuote = '"';
|
---|
1993 | else if (chPrev != '\\')
|
---|
1994 | chQuote = 0;
|
---|
1995 | }
|
---|
1996 | else if (ch == '\'')
|
---|
1997 | {
|
---|
1998 | if (!chQuote)
|
---|
1999 | chQuote = '\'';
|
---|
2000 | else if (chPrev != '\\')
|
---|
2001 | chQuote = 0;
|
---|
2002 | }
|
---|
2003 | else if (ch == '\\')
|
---|
2004 | {
|
---|
2005 | /* Splice lines? */
|
---|
2006 | unsigned ch2 = vbcppMacroExpandPeekCh(pExp, poff);
|
---|
2007 | if (ch2 == '\r' || ch2 == '\n')
|
---|
2008 | {
|
---|
2009 | rcExit = vbcppMacroExpandSkipEol(pThis, pExp, poff);
|
---|
2010 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
2011 | break;
|
---|
2012 | continue;
|
---|
2013 | }
|
---|
2014 | }
|
---|
2015 | else if (cchArg == 0 && RT_C_IS_SPACE(ch))
|
---|
2016 | continue; /* ignore spaces leading up to an argument value */
|
---|
2017 |
|
---|
2018 | /* Append the character to the argument value, adding the argument
|
---|
2019 | to the output array if it's first character in it. */
|
---|
2020 | if (cchArg + 1 >= cbArgAlloc)
|
---|
2021 | {
|
---|
2022 | /* Add argument to the vector. */
|
---|
2023 | if (!cchArg)
|
---|
2024 | {
|
---|
2025 | rcExit = vbcppMacroExpandGrowArgArray(pThis, pExp, RT_MAX(pExp->cArgs + 1, cArgsHint));
|
---|
2026 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
2027 | break;
|
---|
2028 | pExp->papszArgs[pExp->cArgs++] = pszArg;
|
---|
2029 | }
|
---|
2030 |
|
---|
2031 | /* Resize the argument value buffer. */
|
---|
2032 | cbArgAlloc = cbArgAlloc ? cbArgAlloc * 2 : 16;
|
---|
2033 | pszArg = (char *)RTMemRealloc(pszArg, cbArgAlloc);
|
---|
2034 | if (!pszArg)
|
---|
2035 | {
|
---|
2036 | rcExit = vbcppError(pThis, "out of memory");
|
---|
2037 | break;
|
---|
2038 | }
|
---|
2039 | pExp->papszArgs[pExp->cArgs - 1] = pszArg;
|
---|
2040 | }
|
---|
2041 |
|
---|
2042 | pszArg[cchArg++] = ch;
|
---|
2043 | pszArg[cchArg] = '\0';
|
---|
2044 | }
|
---|
2045 |
|
---|
2046 | /*
|
---|
2047 | * Check that we're leaving on good terms.
|
---|
2048 | */
|
---|
2049 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
2050 | {
|
---|
2051 | if (cParentheses)
|
---|
2052 | rcExit = vbcppError(pThis, "Missing ')'");
|
---|
2053 | }
|
---|
2054 |
|
---|
2055 | return rcExit;
|
---|
2056 | }
|
---|
2057 |
|
---|
2058 |
|
---|
2059 | /**
|
---|
2060 | * Expands the arguments referenced in the macro value.
|
---|
2061 | *
|
---|
2062 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE + msg.
|
---|
2063 | * @param pThis The C preprocessor instance.
|
---|
2064 | * @param pExp The expansion context.
|
---|
2065 | * @param pMacro The macro. Must be a function macro.
|
---|
2066 | * @param pStrBuf String buffer containing the result. The caller
|
---|
2067 | * should initialize and destroy this!
|
---|
2068 | */
|
---|
2069 | static RTEXITCODE vbcppMacroExpandValueWithArguments(PVBCPP pThis, PVBCPPMACROEXP pExp, PVBCPPMACRO pMacro,
|
---|
2070 | PVBCPPSTRBUF pStrBuf)
|
---|
2071 | {
|
---|
2072 | Assert(pMacro->fFunction);
|
---|
2073 |
|
---|
2074 | /*
|
---|
2075 | * Empty?
|
---|
2076 | */
|
---|
2077 | if ( !pMacro->cchValue
|
---|
2078 | || (pMacro->cchValue == 1 && pMacro->szValue[0] == '#'))
|
---|
2079 | return RTEXITCODE_SUCCESS;
|
---|
2080 |
|
---|
2081 | /*
|
---|
2082 | * Parse the value.
|
---|
2083 | */
|
---|
2084 | RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
|
---|
2085 | const char *pszSrc = pMacro->szValue;
|
---|
2086 | const char *pszSrcSeq;
|
---|
2087 | char ch;
|
---|
2088 | while ((ch = *pszSrc++) != '\0')
|
---|
2089 | {
|
---|
2090 | Assert(ch != '\r'); Assert(ch != '\n'); /* probably not true atm. */
|
---|
2091 | if (ch == '#')
|
---|
2092 | {
|
---|
2093 | if (*pszSrc == '#')
|
---|
2094 | {
|
---|
2095 | /* Concatenate operator. */
|
---|
2096 | rcExit = vbcppError(pThis, "The '##' operatore is not yet implemented");
|
---|
2097 | }
|
---|
2098 | else
|
---|
2099 | {
|
---|
2100 | /* Stringify macro argument. */
|
---|
2101 | rcExit = vbcppError(pThis, "The '#' operatore is not yet implemented");
|
---|
2102 | }
|
---|
2103 | return rcExit;
|
---|
2104 | }
|
---|
2105 | else if (ch == '"')
|
---|
2106 | {
|
---|
2107 | /* String litteral. */
|
---|
2108 | pszSrcSeq = pszSrc - 1;
|
---|
2109 | while ((ch = *pszSrc++) != '"')
|
---|
2110 | {
|
---|
2111 | if (ch == '\\')
|
---|
2112 | ch = *pszSrc++;
|
---|
2113 | if (ch == '\0')
|
---|
2114 | {
|
---|
2115 | rcExit = vbcppError(pThis, "String litteral is missing closing quote (\").");
|
---|
2116 | break;
|
---|
2117 | }
|
---|
2118 | }
|
---|
2119 | rcExit = vbcppStrBufAppendN(pStrBuf, pszSrcSeq, pszSrc - pszSrcSeq);
|
---|
2120 | }
|
---|
2121 | else if (ch == '\'')
|
---|
2122 | {
|
---|
2123 | /* Character constant. */
|
---|
2124 | pszSrcSeq = pszSrc - 1;
|
---|
2125 | while ((ch = *pszSrc++) != '\'')
|
---|
2126 | {
|
---|
2127 | if (ch == '\\')
|
---|
2128 | ch = *pszSrc++;
|
---|
2129 | if (ch == '\0')
|
---|
2130 | {
|
---|
2131 | rcExit = vbcppError(pThis, "Character constant is missing closing quote (').");
|
---|
2132 | break;
|
---|
2133 | }
|
---|
2134 | }
|
---|
2135 | rcExit = vbcppStrBufAppendN(pStrBuf, pszSrcSeq, pszSrc - pszSrcSeq);
|
---|
2136 | }
|
---|
2137 | else if (RT_C_IS_DIGIT(ch))
|
---|
2138 | {
|
---|
2139 | /* Process numerical constants correctly (i.e. don't mess with the suffix). */
|
---|
2140 | pszSrcSeq = pszSrc - 1;
|
---|
2141 | while ( (ch = *pszSrc) != '\0'
|
---|
2142 | && ( vbcppIsCIdentifierChar(ch)
|
---|
2143 | || ch == '.') )
|
---|
2144 | pszSrc++;
|
---|
2145 | rcExit = vbcppStrBufAppendN(pStrBuf, pszSrcSeq, pszSrc - pszSrcSeq);
|
---|
2146 | }
|
---|
2147 | else if (RT_C_IS_SPACE(ch))
|
---|
2148 | {
|
---|
2149 | /* join spaces */
|
---|
2150 | if (RT_C_IS_SPACE(vbcppStrBufLastCh(pStrBuf)))
|
---|
2151 | continue;
|
---|
2152 | rcExit = vbcppStrBufAppendCh(pStrBuf, ch);
|
---|
2153 | }
|
---|
2154 | else if (vbcppIsCIdentifierLeadChar(ch))
|
---|
2155 | {
|
---|
2156 | /* Something we should replace? */
|
---|
2157 | pszSrcSeq = pszSrc - 1;
|
---|
2158 | while ( (ch = *pszSrc) != '\0'
|
---|
2159 | && vbcppIsCIdentifierChar(ch))
|
---|
2160 | pszSrc++;
|
---|
2161 | size_t cchDefine = pszSrc - pszSrcSeq;
|
---|
2162 | uint32_t iArg;
|
---|
2163 | if ( VBCPP_BITMAP_IS_SET(pMacro->bmArgs, *pszSrcSeq)
|
---|
2164 | && (iArg = vbcppMacroLookupArg(pMacro, pszSrcSeq, cchDefine)) != UINT32_MAX)
|
---|
2165 | {
|
---|
2166 | /** @todo check out spaces here! */
|
---|
2167 | if (iArg < pMacro->cArgs)
|
---|
2168 | {
|
---|
2169 | Assert(iArg < pExp->cArgs);
|
---|
2170 | rcExit = vbcppStrBufAppend(pStrBuf, pExp->papszArgs[iArg]);
|
---|
2171 | if (*pExp->papszArgs[iArg] != '\0' && rcExit == RTEXITCODE_SUCCESS)
|
---|
2172 | rcExit = vbcppStrBufAppendCh(pStrBuf, ' ');
|
---|
2173 | }
|
---|
2174 | else
|
---|
2175 | {
|
---|
2176 | /* __VA_ARGS__ */
|
---|
2177 | if (iArg < pExp->cArgs)
|
---|
2178 | {
|
---|
2179 | for (;;)
|
---|
2180 | {
|
---|
2181 | rcExit = vbcppStrBufAppend(pStrBuf, pExp->papszArgs[iArg]);
|
---|
2182 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
2183 | break;
|
---|
2184 | iArg++;
|
---|
2185 | if (iArg >= pExp->cArgs)
|
---|
2186 | break;
|
---|
2187 | rcExit = vbcppStrBufAppendCh(pStrBuf, ',');
|
---|
2188 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
2189 | break;
|
---|
2190 | }
|
---|
2191 | }
|
---|
2192 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
2193 | rcExit = vbcppStrBufAppendCh(pStrBuf, ' ');
|
---|
2194 | }
|
---|
2195 | }
|
---|
2196 | /* Not an argument needing replacing. */
|
---|
2197 | else
|
---|
2198 | rcExit = vbcppStrBufAppendN(pStrBuf, pszSrcSeq, cchDefine);
|
---|
2199 | }
|
---|
2200 | else
|
---|
2201 | {
|
---|
2202 | rcExit = vbcppStrBufAppendCh(pStrBuf, ch);
|
---|
2203 | }
|
---|
2204 | }
|
---|
2205 |
|
---|
2206 | return rcExit;
|
---|
2207 | }
|
---|
2208 |
|
---|
2209 |
|
---|
2210 |
|
---|
2211 | /**
|
---|
2212 | * Expands the given macro.
|
---|
2213 | *
|
---|
2214 | * Caller already checked if a function macro should be expanded, i.e. whether
|
---|
2215 | * there is a parameter list.
|
---|
2216 | *
|
---|
2217 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE + msg.
|
---|
2218 | * @param pThis The C preprocessor instance.
|
---|
2219 | * @param pExp The expansion context.
|
---|
2220 | * @param offMacro Offset into the expansion buffer of the macro
|
---|
2221 | * invocation.
|
---|
2222 | * @param pMacro The macro.
|
---|
2223 | * @param offParameters The start of the parameter list if applicable.
|
---|
2224 | * Ignored if not function macro. If the
|
---|
2225 | * parameter list starts at the current stream
|
---|
2226 | * position shall be at the end of the expansion
|
---|
2227 | * buffer.
|
---|
2228 | */
|
---|
2229 | static RTEXITCODE vbcppMacroExpandIt(PVBCPP pThis, PVBCPPMACROEXP pExp, size_t offMacro, PVBCPPMACRO pMacro,
|
---|
2230 | size_t offParameters)
|
---|
2231 | {
|
---|
2232 | RTEXITCODE rcExit;
|
---|
2233 | Assert(offMacro + pMacro->Core.cchString <= pExp->StrBuf.cchBuf);
|
---|
2234 | Assert(!pMacro->fExpanding);
|
---|
2235 |
|
---|
2236 | /*
|
---|
2237 | * Function macros are kind of difficult...
|
---|
2238 | */
|
---|
2239 | if (pMacro->fFunction)
|
---|
2240 | {
|
---|
2241 | rcExit = vbcppMacroExpandGatherParameters(pThis, pExp, &offParameters, pMacro->cArgs + pMacro->fVarArg);
|
---|
2242 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
2243 | {
|
---|
2244 | if (pExp->cArgs > pMacro->cArgs && !pMacro->fVarArg)
|
---|
2245 | rcExit = vbcppError(pThis, "Too many arguments to macro '%s' - found %u, expected %u",
|
---|
2246 | pMacro->Core.pszString, pExp->cArgs, pMacro->cArgs);
|
---|
2247 | else if (pExp->cArgs < pMacro->cArgs)
|
---|
2248 | rcExit = vbcppError(pThis, "Too few arguments to macro '%s' - found %u, expected %u",
|
---|
2249 | pMacro->Core.pszString, pExp->cArgs, pMacro->cArgs);
|
---|
2250 | }
|
---|
2251 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
2252 | {
|
---|
2253 | VBCPPSTRBUF ValueBuf;
|
---|
2254 | vbcppStrBufInit(&ValueBuf, pThis);
|
---|
2255 | rcExit = vbcppMacroExpandValueWithArguments(pThis, pExp, pMacro, &ValueBuf);
|
---|
2256 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
2257 | rcExit = vbcppMacroExpandReplace(pThis, pExp, offMacro, offParameters - offMacro,
|
---|
2258 | ValueBuf.pszBuf, ValueBuf.cchBuf);
|
---|
2259 | vbcppStrBufDelete(&ValueBuf);
|
---|
2260 | }
|
---|
2261 | }
|
---|
2262 | /*
|
---|
2263 | * Object-like macros are easy. :-)
|
---|
2264 | */
|
---|
2265 | else
|
---|
2266 | rcExit = vbcppMacroExpandReplace(pThis, pExp, offMacro, pMacro->Core.cchString, pMacro->szValue, pMacro->cchValue);
|
---|
2267 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
2268 | {
|
---|
2269 | #if 0 /* wrong */
|
---|
2270 | /*
|
---|
2271 | * Push the macro onto the stack.
|
---|
2272 | */
|
---|
2273 | pMacro->fExpanding = true;
|
---|
2274 | pMacro->pUpExpanding = pExp->pMacroStack;
|
---|
2275 | pExp->pMacroStack = pMacro;
|
---|
2276 | #endif
|
---|
2277 | }
|
---|
2278 |
|
---|
2279 | return rcExit;
|
---|
2280 | }
|
---|
2281 |
|
---|
2282 |
|
---|
2283 | /**
|
---|
2284 | * Looks for a left parenthesis in the macro expansion buffer and the input
|
---|
2285 | * stream.
|
---|
2286 | *
|
---|
2287 | * @retval true if found. The stream position at opening parenthesis.
|
---|
2288 | * @retval false if not found. The stream position is unchanged.
|
---|
2289 | *
|
---|
2290 | * @param pThis The C preprocessor instance.
|
---|
2291 | * @param pExp The expansion context.
|
---|
2292 | * @param poff The current offset in the expansion context.
|
---|
2293 | * Will be updated on success.
|
---|
2294 | *
|
---|
2295 | * @sa vbcppInputLookForLeftParenthesis
|
---|
2296 | */
|
---|
2297 | static bool vbcppMacroExpandLookForLeftParenthesis(PVBCPP pThis, PVBCPPMACROEXP pExp, size_t *poff)
|
---|
2298 | {
|
---|
2299 | /*
|
---|
2300 | * Search the buffer first. (No comments there.)
|
---|
2301 | */
|
---|
2302 | size_t off = *poff;
|
---|
2303 | while (off < pExp->StrBuf.cchBuf)
|
---|
2304 | {
|
---|
2305 | char ch = pExp->StrBuf.pszBuf[off];
|
---|
2306 | if (!RT_C_IS_SPACE(ch))
|
---|
2307 | {
|
---|
2308 | if (ch == '(')
|
---|
2309 | {
|
---|
2310 | *poff = off;
|
---|
2311 | return true;
|
---|
2312 | }
|
---|
2313 | return false;
|
---|
2314 | }
|
---|
2315 | off++;
|
---|
2316 | }
|
---|
2317 |
|
---|
2318 | /*
|
---|
2319 | * Reached the end of the buffer, continue searching in the stream.
|
---|
2320 | */
|
---|
2321 | PSCMSTREAM pStrmInput = pExp->pStrmInput;
|
---|
2322 | size_t offSaved = ScmStreamTell(pStrmInput);
|
---|
2323 | /*RTEXITCODE rcExit = */ vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
2324 | unsigned ch = ScmStreamPeekCh(pStrmInput);
|
---|
2325 | if (ch == '(')
|
---|
2326 | {
|
---|
2327 | *poff = pExp->StrBuf.cchBuf;
|
---|
2328 | return true;
|
---|
2329 | }
|
---|
2330 |
|
---|
2331 | int rc = ScmStreamSeekAbsolute(pStrmInput, offSaved);
|
---|
2332 | AssertFatalRC(rc);
|
---|
2333 | return false;
|
---|
2334 | }
|
---|
2335 |
|
---|
2336 |
|
---|
2337 | /**
|
---|
2338 | * Implements the 'defined' unary operator for \#if and \#elif expressions.
|
---|
2339 | *
|
---|
2340 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE + msg.
|
---|
2341 | * @param pThis The C preprocessor instance.
|
---|
2342 | * @param pExp The expansion context.
|
---|
2343 | * @param offStart The expansion buffer offset where the 'defined'
|
---|
2344 | * occurs.
|
---|
2345 | * @param poff Where to store the offset at which the re-scan
|
---|
2346 | * shall resume upon return.
|
---|
2347 | */
|
---|
2348 | static RTEXITCODE vbcppMacroExpandDefinedOperator(PVBCPP pThis, PVBCPPMACROEXP pExp, size_t offStart, size_t *poff)
|
---|
2349 | {
|
---|
2350 | Assert(!pExp->pStrmInput); /* offset usage below. */
|
---|
2351 |
|
---|
2352 | /*
|
---|
2353 | * Skip white space.
|
---|
2354 | */
|
---|
2355 | unsigned ch;
|
---|
2356 | while ((ch = vbcppMacroExpandGetCh(pExp, poff)) != ~(unsigned)0)
|
---|
2357 | if (!RT_C_IS_SPACE(ch))
|
---|
2358 | break;
|
---|
2359 | bool const fWithParenthesis = ch == '(';
|
---|
2360 | if (fWithParenthesis)
|
---|
2361 | while ((ch = vbcppMacroExpandGetCh(pExp, poff)) != ~(unsigned)0)
|
---|
2362 | if (!RT_C_IS_SPACE(ch))
|
---|
2363 | break;
|
---|
2364 |
|
---|
2365 | /*
|
---|
2366 | * Macro identifier.
|
---|
2367 | */
|
---|
2368 | if (!vbcppIsCIdentifierLeadChar(ch))
|
---|
2369 | return vbcppError(pThis, "Expected macro name after 'defined' operator");
|
---|
2370 |
|
---|
2371 | size_t const offDefine = *poff - 1;
|
---|
2372 | while ((ch = vbcppMacroExpandGetCh(pExp, poff)) != ~(unsigned)0)
|
---|
2373 | if (!vbcppIsCIdentifierChar(ch))
|
---|
2374 | break;
|
---|
2375 | size_t const cchDefine = *poff - offDefine - 1;
|
---|
2376 |
|
---|
2377 | /*
|
---|
2378 | * Check for closing parenthesis.
|
---|
2379 | */
|
---|
2380 | if (fWithParenthesis)
|
---|
2381 | {
|
---|
2382 | while (RT_C_IS_SPACE(ch))
|
---|
2383 | ch = vbcppMacroExpandGetCh(pExp, poff);
|
---|
2384 | if (ch != ')')
|
---|
2385 | return vbcppError(pThis, "Expected closing parenthesis after macro name");
|
---|
2386 | }
|
---|
2387 |
|
---|
2388 | /*
|
---|
2389 | * Do the job.
|
---|
2390 | */
|
---|
2391 | const char *pszResult = vbcppMacroExists(pThis, &pExp->StrBuf.pszBuf[offDefine], cchDefine)
|
---|
2392 | ? "1" : "0";
|
---|
2393 | RTEXITCODE rcExit = vbcppMacroExpandReplace(pThis, pExp, offStart, *poff - offStart, pszResult, 1);
|
---|
2394 | *poff = offStart + 1;
|
---|
2395 | return rcExit;
|
---|
2396 | }
|
---|
2397 |
|
---|
2398 |
|
---|
2399 | /**
|
---|
2400 | * Re-scan the expanded macro.
|
---|
2401 | *
|
---|
2402 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE + msg.
|
---|
2403 | * @param pThis The C preprocessor instance.
|
---|
2404 | * @param pExp The expansion context.
|
---|
2405 | * @param enmMode The re-scan mode.
|
---|
2406 | * @param pcReplacements Where to return the number of replacements
|
---|
2407 | * performed. Optional.
|
---|
2408 | * @param pcDefinedUnknown Where to return the number of defined() checks
|
---|
2409 | * on unknown macros. Optional.
|
---|
2410 | */
|
---|
2411 | static RTEXITCODE vbcppMacroExpandReScan(PVBCPP pThis, PVBCPPMACROEXP pExp, VBCPPMACRORESCANMODE enmMode,
|
---|
2412 | size_t *pcReplacements, size_t *pcDefinedUnknown)
|
---|
2413 | {
|
---|
2414 | RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
|
---|
2415 | size_t cReplacements = 0;
|
---|
2416 | size_t cDefinedUnknown = 0;
|
---|
2417 | size_t off = 0;
|
---|
2418 | unsigned ch;
|
---|
2419 | while ( off < pExp->StrBuf.cchBuf
|
---|
2420 | && (ch = vbcppMacroExpandGetCh(pExp, &off)) != ~(unsigned)0)
|
---|
2421 | {
|
---|
2422 | /*
|
---|
2423 | * String litteral or character constant.
|
---|
2424 | */
|
---|
2425 | if (ch == '\'' || ch == '"')
|
---|
2426 | {
|
---|
2427 | unsigned const chEndQuote = ch;
|
---|
2428 | while ( off < pExp->StrBuf.cchBuf
|
---|
2429 | && (ch = vbcppMacroExpandGetCh(pExp, &off)) != ~(unsigned)0)
|
---|
2430 | {
|
---|
2431 | if (ch == '\\')
|
---|
2432 | {
|
---|
2433 | ch = vbcppMacroExpandGetCh(pExp, &off);
|
---|
2434 | if (ch == ~(unsigned)0)
|
---|
2435 | break;
|
---|
2436 | }
|
---|
2437 | else if (ch == chEndQuote)
|
---|
2438 | break;
|
---|
2439 | }
|
---|
2440 | if (ch == ~(unsigned)0)
|
---|
2441 | return vbcppError(pThis, "Missing end quote (%c)", chEndQuote);
|
---|
2442 | }
|
---|
2443 | /*
|
---|
2444 | * Number constant.
|
---|
2445 | */
|
---|
2446 | else if ( RT_C_IS_DIGIT(ch)
|
---|
2447 | || ( ch == '.'
|
---|
2448 | && off + 1 < pExp->StrBuf.cchBuf
|
---|
2449 | && RT_C_IS_DIGIT(vbcppMacroExpandPeekCh(pExp, &off))
|
---|
2450 | )
|
---|
2451 | )
|
---|
2452 | {
|
---|
2453 | while ( off < pExp->StrBuf.cchBuf
|
---|
2454 | && (ch = vbcppMacroExpandPeekCh(pExp, &off)) != ~(unsigned)0
|
---|
2455 | && vbcppIsCIdentifierChar(ch) )
|
---|
2456 | vbcppMacroExpandGetCh(pExp, &off);
|
---|
2457 | }
|
---|
2458 | /*
|
---|
2459 | * Something that can be replaced?
|
---|
2460 | */
|
---|
2461 | else if (vbcppIsCIdentifierLeadChar(ch))
|
---|
2462 | {
|
---|
2463 | size_t offDefine = off - 1;
|
---|
2464 | while ( off < pExp->StrBuf.cchBuf
|
---|
2465 | && (ch = vbcppMacroExpandPeekCh(pExp, &off)) != ~(unsigned)0
|
---|
2466 | && vbcppIsCIdentifierChar(ch) )
|
---|
2467 | vbcppMacroExpandGetCh(pExp, &off);
|
---|
2468 | size_t cchDefine = off - offDefine;
|
---|
2469 |
|
---|
2470 | PVBCPPMACRO pMacro = vbcppMacroLookup(pThis, &pExp->StrBuf.pszBuf[offDefine], cchDefine);
|
---|
2471 | if ( pMacro
|
---|
2472 | && ( !pMacro->fFunction
|
---|
2473 | || vbcppMacroExpandLookForLeftParenthesis(pThis, pExp, &off)) )
|
---|
2474 | {
|
---|
2475 | cReplacements++;
|
---|
2476 | rcExit = vbcppMacroExpandIt(pThis, pExp, offDefine, pMacro, off);
|
---|
2477 | off = offDefine;
|
---|
2478 | }
|
---|
2479 | else
|
---|
2480 | {
|
---|
2481 | if ( !pMacro
|
---|
2482 | && enmMode == kMacroReScanMode_Expression
|
---|
2483 | && cchDefine == sizeof("defined") - 1
|
---|
2484 | && !strncmp(&pExp->StrBuf.pszBuf[offDefine], "defined", cchDefine))
|
---|
2485 | {
|
---|
2486 | cReplacements++;
|
---|
2487 | cDefinedUnknown++;
|
---|
2488 | rcExit = vbcppMacroExpandDefinedOperator(pThis, pExp, offDefine, &off);
|
---|
2489 | }
|
---|
2490 | else
|
---|
2491 | off = offDefine + cchDefine;
|
---|
2492 | }
|
---|
2493 | }
|
---|
2494 | else
|
---|
2495 | {
|
---|
2496 | Assert(RT_C_IS_SPACE(ch) || RT_C_IS_PUNCT(ch));
|
---|
2497 | Assert(ch != '\r' && ch != '\n');
|
---|
2498 | }
|
---|
2499 | }
|
---|
2500 |
|
---|
2501 | if (pcReplacements)
|
---|
2502 | *pcReplacements = cReplacements;
|
---|
2503 | if (pcDefinedUnknown)
|
---|
2504 | *pcDefinedUnknown = cDefinedUnknown;
|
---|
2505 | return rcExit;
|
---|
2506 | }
|
---|
2507 |
|
---|
2508 |
|
---|
2509 | /**
|
---|
2510 | * Cleans up the expansion context.
|
---|
2511 | *
|
---|
2512 | * This involves clearing VBCPPMACRO::fExpanding and VBCPPMACRO::pUpExpanding,
|
---|
2513 | * and freeing the memory resources associated with the expansion context.
|
---|
2514 | *
|
---|
2515 | * @param pExp The expansion context.
|
---|
2516 | */
|
---|
2517 | static void vbcppMacroExpandCleanup(PVBCPPMACROEXP pExp)
|
---|
2518 | {
|
---|
2519 | #if 0
|
---|
2520 | while (pExp->pMacroStack)
|
---|
2521 | {
|
---|
2522 | PVBCPPMACRO pMacro = pExp->pMacroStack;
|
---|
2523 | pExp->pMacroStack = pMacro->pUpExpanding;
|
---|
2524 |
|
---|
2525 | pMacro->fExpanding = false;
|
---|
2526 | pMacro->pUpExpanding = NULL;
|
---|
2527 | }
|
---|
2528 | #endif
|
---|
2529 |
|
---|
2530 | while (pExp->cArgs > 0)
|
---|
2531 | {
|
---|
2532 | RTMemFree(pExp->papszArgs[--pExp->cArgs]);
|
---|
2533 | pExp->papszArgs[pExp->cArgs] = NULL;
|
---|
2534 | }
|
---|
2535 |
|
---|
2536 | RTMemFree(pExp->papszArgs);
|
---|
2537 | pExp->papszArgs = NULL;
|
---|
2538 |
|
---|
2539 | vbcppStrBufDelete(&pExp->StrBuf);
|
---|
2540 | }
|
---|
2541 |
|
---|
2542 |
|
---|
2543 |
|
---|
2544 | /**
|
---|
2545 | * Frees a define.
|
---|
2546 | *
|
---|
2547 | * @returns VINF_SUCCESS (used when called by RTStrSpaceDestroy)
|
---|
2548 | * @param pStr Pointer to the VBCPPMACRO::Core member.
|
---|
2549 | * @param pvUser Unused.
|
---|
2550 | */
|
---|
2551 | static DECLCALLBACK(int) vbcppMacroFree(PRTSTRSPACECORE pStr, void *pvUser)
|
---|
2552 | {
|
---|
2553 | RTMemFree(pStr);
|
---|
2554 | NOREF(pvUser);
|
---|
2555 | return VINF_SUCCESS;
|
---|
2556 | }
|
---|
2557 |
|
---|
2558 |
|
---|
2559 | /**
|
---|
2560 | * Removes a define.
|
---|
2561 | *
|
---|
2562 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE + msg.
|
---|
2563 | * @param pThis The C preprocessor instance.
|
---|
2564 | * @param pszDefine The define name, no argument list or anything.
|
---|
2565 | * @param cchDefine The length of the name. RTSTR_MAX is ok.
|
---|
2566 | * @param fExplicitUndef Explicit undefinition, that is, in a selective
|
---|
2567 | * preprocessing run it will evaluate to undefined.
|
---|
2568 | */
|
---|
2569 | static RTEXITCODE vbcppMacroUndef(PVBCPP pThis, const char *pszDefine, size_t cchDefine, bool fExplicitUndef)
|
---|
2570 | {
|
---|
2571 | PRTSTRSPACECORE pHit = RTStrSpaceGetN(&pThis->StrSpace, pszDefine, cchDefine);
|
---|
2572 | if (pHit)
|
---|
2573 | {
|
---|
2574 | RTStrSpaceRemove(&pThis->StrSpace, pHit->pszString);
|
---|
2575 | vbcppMacroFree(pHit, NULL);
|
---|
2576 | }
|
---|
2577 |
|
---|
2578 | if (fExplicitUndef)
|
---|
2579 | {
|
---|
2580 | if (cchDefine == RTSTR_MAX)
|
---|
2581 | cchDefine = strlen(pszDefine);
|
---|
2582 |
|
---|
2583 | PRTSTRSPACECORE pStr = (PRTSTRSPACECORE)RTMemAlloc(sizeof(*pStr) + cchDefine + 1);
|
---|
2584 | if (!pStr)
|
---|
2585 | return vbcppError(pThis, "out of memory");
|
---|
2586 | char *pszDst = (char *)(pStr + 1);
|
---|
2587 | pStr->pszString = pszDst;
|
---|
2588 | memcpy(pszDst, pszDefine, cchDefine);
|
---|
2589 | pszDst[cchDefine] = '\0';
|
---|
2590 | if (!RTStrSpaceInsert(&pThis->UndefStrSpace, pStr))
|
---|
2591 | RTMemFree(pStr);
|
---|
2592 | }
|
---|
2593 |
|
---|
2594 | return RTEXITCODE_SUCCESS;
|
---|
2595 | }
|
---|
2596 |
|
---|
2597 |
|
---|
2598 | /**
|
---|
2599 | * Inserts a define (rejecting and freeing it in some case).
|
---|
2600 | *
|
---|
2601 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE + msg.
|
---|
2602 | * @param pThis The C preprocessor instance.
|
---|
2603 | * @param pMacro The define to insert.
|
---|
2604 | */
|
---|
2605 | static RTEXITCODE vbcppMacroInsert(PVBCPP pThis, PVBCPPMACRO pMacro)
|
---|
2606 | {
|
---|
2607 | /*
|
---|
2608 | * Reject illegal macro names.
|
---|
2609 | */
|
---|
2610 | if (!strcmp(pMacro->Core.pszString, "defined"))
|
---|
2611 | {
|
---|
2612 | RTEXITCODE rcExit = vbcppError(pThis, "Cannot use '%s' as a macro name", pMacro->Core.pszString);
|
---|
2613 | vbcppMacroFree(&pMacro->Core, NULL);
|
---|
2614 | return rcExit;
|
---|
2615 | }
|
---|
2616 |
|
---|
2617 | /*
|
---|
2618 | * Ignore in source-file defines when doing selective preprocessing.
|
---|
2619 | */
|
---|
2620 | if ( !pThis->fRespectSourceDefines
|
---|
2621 | && !pMacro->fCmdLine)
|
---|
2622 | {
|
---|
2623 | /* Ignore*/
|
---|
2624 | vbcppMacroFree(&pMacro->Core, NULL);
|
---|
2625 | return RTEXITCODE_SUCCESS;
|
---|
2626 | }
|
---|
2627 |
|
---|
2628 | /*
|
---|
2629 | * Insert it and update the lead character hint bitmap.
|
---|
2630 | */
|
---|
2631 | if (RTStrSpaceInsert(&pThis->StrSpace, &pMacro->Core))
|
---|
2632 | VBCPP_BITMAP_SET(pThis->bmDefined, *pMacro->Core.pszString);
|
---|
2633 | else
|
---|
2634 | {
|
---|
2635 | /*
|
---|
2636 | * Duplicate. When doing selective D preprocessing, let the command
|
---|
2637 | * line take precendece.
|
---|
2638 | */
|
---|
2639 | PVBCPPMACRO pOld = (PVBCPPMACRO)RTStrSpaceGet(&pThis->StrSpace, pMacro->Core.pszString); Assert(pOld);
|
---|
2640 | if ( pThis->fAllowRedefiningCmdLineDefines
|
---|
2641 | || pMacro->fCmdLine == pOld->fCmdLine)
|
---|
2642 | {
|
---|
2643 | if (pMacro->fCmdLine)
|
---|
2644 | RTMsgWarning("Redefining '%s'", pMacro->Core.pszString);
|
---|
2645 |
|
---|
2646 | RTStrSpaceRemove(&pThis->StrSpace, pOld->Core.pszString);
|
---|
2647 | vbcppMacroFree(&pOld->Core, NULL);
|
---|
2648 |
|
---|
2649 | bool fRc = RTStrSpaceInsert(&pThis->StrSpace, &pMacro->Core);
|
---|
2650 | Assert(fRc); NOREF(fRc);
|
---|
2651 | }
|
---|
2652 | else
|
---|
2653 | {
|
---|
2654 | RTMsgWarning("Ignoring redefinition of '%s'", pMacro->Core.pszString);
|
---|
2655 | vbcppMacroFree(&pMacro->Core, NULL);
|
---|
2656 | }
|
---|
2657 | }
|
---|
2658 |
|
---|
2659 | return RTEXITCODE_SUCCESS;
|
---|
2660 | }
|
---|
2661 |
|
---|
2662 |
|
---|
2663 | /**
|
---|
2664 | * Adds a define.
|
---|
2665 | *
|
---|
2666 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE + msg.
|
---|
2667 | * @param pThis The C preprocessor instance.
|
---|
2668 | * @param pszDefine The define name, no parameter list.
|
---|
2669 | * @param cchDefine The length of the name.
|
---|
2670 | * @param pszParams The parameter list.
|
---|
2671 | * @param cchParams The length of the parameter list.
|
---|
2672 | * @param pszValue The value.
|
---|
2673 | * @param cchDefine The length of the value.
|
---|
2674 | * @param fCmdLine Set if originating on the command line.
|
---|
2675 | */
|
---|
2676 | static RTEXITCODE vbcppMacroAddFn(PVBCPP pThis, const char *pszDefine, size_t cchDefine,
|
---|
2677 | const char *pszParams, size_t cchParams,
|
---|
2678 | const char *pszValue, size_t cchValue,
|
---|
2679 | bool fCmdLine)
|
---|
2680 |
|
---|
2681 | {
|
---|
2682 | Assert(RTStrNLen(pszDefine, cchDefine) == cchDefine);
|
---|
2683 | Assert(RTStrNLen(pszParams, cchParams) == cchParams);
|
---|
2684 | Assert(RTStrNLen(pszValue, cchValue) == cchValue);
|
---|
2685 |
|
---|
2686 | /*
|
---|
2687 | * Determin the number of arguments and how much space their names
|
---|
2688 | * requires. Performing syntax validation while parsing.
|
---|
2689 | */
|
---|
2690 | bool fVariadic = false;
|
---|
2691 | size_t cchArgNames = 0;
|
---|
2692 | uint32_t cArgs = 0;
|
---|
2693 | for (size_t off = 0; off < cchParams; off++)
|
---|
2694 | {
|
---|
2695 | /* Skip blanks and maybe one comma. */
|
---|
2696 | bool fIgnoreComma = cArgs != 0;
|
---|
2697 | while (off < cchParams)
|
---|
2698 | {
|
---|
2699 | if ( !RT_C_IS_SPACE(pszParams[off])
|
---|
2700 | && ( pszParams[off] != '\\'
|
---|
2701 | || (pszParams[off + 1] != '\n' && pszParams[off + 1] != '\r')))
|
---|
2702 | {
|
---|
2703 | if (pszParams[off] != ',' || !fIgnoreComma)
|
---|
2704 | {
|
---|
2705 | if (vbcppIsCIdentifierLeadChar(pszParams[off]))
|
---|
2706 | break;
|
---|
2707 |
|
---|
2708 | /* Check for variadic macro argument, just parsing it for now. */
|
---|
2709 | if ( pszParams[off] == '.'
|
---|
2710 | && off + 3 <= cchParams
|
---|
2711 | && pszParams[off + 1] == '.'
|
---|
2712 | && pszParams[off + 2] == '.')
|
---|
2713 | {
|
---|
2714 | size_t const offSaved = off;
|
---|
2715 | off += 3;
|
---|
2716 | while (off < cchParams && RT_C_IS_SPACE(pszParams[off]))
|
---|
2717 | off++;
|
---|
2718 | if (off == cchParams)
|
---|
2719 | {
|
---|
2720 | cArgs++;
|
---|
2721 | cchArgNames += sizeof("...");
|
---|
2722 | fVariadic = true;
|
---|
2723 | break;
|
---|
2724 | }
|
---|
2725 | off = offSaved;
|
---|
2726 | }
|
---|
2727 | return vbcppErrorPos(pThis, &pszParams[off], "Unexpected character (%#x, off=%zu)", pszParams[off], off);
|
---|
2728 | }
|
---|
2729 | fIgnoreComma = false;
|
---|
2730 | }
|
---|
2731 | off++;
|
---|
2732 | }
|
---|
2733 | if (off >= cchParams)
|
---|
2734 | break;
|
---|
2735 |
|
---|
2736 | /* Found and argument. First character is already validated. */
|
---|
2737 | cArgs++;
|
---|
2738 | cchArgNames += 2;
|
---|
2739 | off++;
|
---|
2740 | while ( off < cchParams
|
---|
2741 | && vbcppIsCIdentifierChar(pszParams[off]))
|
---|
2742 | off++, cchArgNames++;
|
---|
2743 | }
|
---|
2744 |
|
---|
2745 | /*
|
---|
2746 | * Allocate a structure.
|
---|
2747 | */
|
---|
2748 | size_t cbDef = RT_UOFFSETOF_DYN(VBCPPMACRO, szValue[cchValue + 1 + cchDefine + 1 + cchArgNames])
|
---|
2749 | + sizeof(const char *) * cArgs;
|
---|
2750 | cbDef = RT_ALIGN_Z(cbDef, sizeof(const char *));
|
---|
2751 | PVBCPPMACRO pMacro = (PVBCPPMACRO)RTMemAlloc(cbDef);
|
---|
2752 | if (!pMacro)
|
---|
2753 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "out of memory");
|
---|
2754 |
|
---|
2755 | char *pszDst = &pMacro->szValue[cchValue + 1];
|
---|
2756 | pMacro->Core.pszString = pszDst;
|
---|
2757 | memcpy(pszDst, pszDefine, cchDefine);
|
---|
2758 | pszDst += cchDefine;
|
---|
2759 | *pszDst++ = '\0';
|
---|
2760 | pMacro->fFunction = true;
|
---|
2761 | pMacro->fVarArg = fVariadic;
|
---|
2762 | pMacro->fCmdLine = fCmdLine;
|
---|
2763 | pMacro->fExpanding = false;
|
---|
2764 | pMacro->cArgs = cArgs;
|
---|
2765 | pMacro->papszArgs = (const char **)((uintptr_t)pMacro + cbDef - sizeof(const char *) * cArgs);
|
---|
2766 | VBCPP_BITMAP_EMPTY(pMacro->bmArgs);
|
---|
2767 | pMacro->cchValue = cchValue;
|
---|
2768 | memcpy(pMacro->szValue, pszValue, cchValue);
|
---|
2769 | pMacro->szValue[cchValue] = '\0';
|
---|
2770 |
|
---|
2771 | /*
|
---|
2772 | * Set up the arguments.
|
---|
2773 | */
|
---|
2774 | uint32_t iArg = 0;
|
---|
2775 | for (size_t off = 0; off < cchParams; off++)
|
---|
2776 | {
|
---|
2777 | /* Skip blanks and maybe one comma. */
|
---|
2778 | bool fIgnoreComma = cArgs != 0;
|
---|
2779 | while (off < cchParams)
|
---|
2780 | {
|
---|
2781 | if ( !RT_C_IS_SPACE(pszParams[off])
|
---|
2782 | && ( pszParams[off] != '\\'
|
---|
2783 | || (pszParams[off + 1] != '\n' && pszParams[off + 1] != '\r')))
|
---|
2784 | {
|
---|
2785 | if (pszParams[off] != ',' || !fIgnoreComma)
|
---|
2786 | break;
|
---|
2787 | fIgnoreComma = false;
|
---|
2788 | }
|
---|
2789 | off++;
|
---|
2790 | }
|
---|
2791 | if (off >= cchParams)
|
---|
2792 | break;
|
---|
2793 |
|
---|
2794 | /* Found and argument. First character is already validated. */
|
---|
2795 | pMacro->papszArgs[iArg] = pszDst;
|
---|
2796 | if (!fVariadic || iArg + 1 < cArgs)
|
---|
2797 | {
|
---|
2798 | VBCPP_BITMAP_SET(pMacro->bmArgs, pszParams[off]);
|
---|
2799 | do
|
---|
2800 | {
|
---|
2801 | *pszDst++ = pszParams[off++];
|
---|
2802 | } while ( off < cchParams
|
---|
2803 | && vbcppIsCIdentifierChar(pszParams[off]));
|
---|
2804 | }
|
---|
2805 | else
|
---|
2806 | {
|
---|
2807 | Assert(strncmp(&pszParams[off], "...", 3) == 0);
|
---|
2808 | VBCPP_BITMAP_SET(pMacro->bmArgs, '_'); /* __VA_ARGS__ */
|
---|
2809 | off += 3;
|
---|
2810 | *pszDst++ = '.';
|
---|
2811 | *pszDst++ = '.';
|
---|
2812 | *pszDst++ = '.';
|
---|
2813 | }
|
---|
2814 | *pszDst++ = '\0';
|
---|
2815 | iArg++;
|
---|
2816 | }
|
---|
2817 | Assert((uintptr_t)pszDst <= (uintptr_t)pMacro->papszArgs);
|
---|
2818 |
|
---|
2819 | return vbcppMacroInsert(pThis, pMacro);
|
---|
2820 | }
|
---|
2821 |
|
---|
2822 |
|
---|
2823 | /**
|
---|
2824 | * Adds a define.
|
---|
2825 | *
|
---|
2826 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE + msg.
|
---|
2827 | * @param pThis The C preprocessor instance.
|
---|
2828 | * @param pszDefine The define name and optionally the argument
|
---|
2829 | * list.
|
---|
2830 | * @param cchDefine The length of the name. RTSTR_MAX is ok.
|
---|
2831 | * @param pszValue The value.
|
---|
2832 | * @param cchDefine The length of the value. RTSTR_MAX is ok.
|
---|
2833 | * @param fCmdLine Set if originating on the command line.
|
---|
2834 | */
|
---|
2835 | static RTEXITCODE vbcppMacroAdd(PVBCPP pThis, const char *pszDefine, size_t cchDefine,
|
---|
2836 | const char *pszValue, size_t cchValue, bool fCmdLine)
|
---|
2837 | {
|
---|
2838 | /*
|
---|
2839 | * We need the lengths. Trim the input.
|
---|
2840 | */
|
---|
2841 | if (cchDefine == RTSTR_MAX)
|
---|
2842 | cchDefine = strlen(pszDefine);
|
---|
2843 | while (cchDefine > 0 && RT_C_IS_SPACE(*pszDefine))
|
---|
2844 | pszDefine++, cchDefine--;
|
---|
2845 | while (cchDefine > 0 && RT_C_IS_SPACE(pszDefine[cchDefine - 1]))
|
---|
2846 | cchDefine--;
|
---|
2847 | if (!cchDefine)
|
---|
2848 | return vbcppErrorPos(pThis, pszDefine, "The define has no name");
|
---|
2849 |
|
---|
2850 | if (cchValue == RTSTR_MAX)
|
---|
2851 | cchValue = strlen(pszValue);
|
---|
2852 | while (cchValue > 0 && RT_C_IS_SPACE(*pszValue))
|
---|
2853 | pszValue++, cchValue--;
|
---|
2854 | while (cchValue > 0 && RT_C_IS_SPACE(pszValue[cchValue - 1]))
|
---|
2855 | cchValue--;
|
---|
2856 |
|
---|
2857 | /*
|
---|
2858 | * Arguments make the job a bit more annoying. Handle that elsewhere
|
---|
2859 | */
|
---|
2860 | const char *pszParams = (const char *)memchr(pszDefine, '(', cchDefine);
|
---|
2861 | if (pszParams)
|
---|
2862 | {
|
---|
2863 | size_t cchParams = pszDefine + cchDefine - pszParams;
|
---|
2864 | cchDefine -= cchParams;
|
---|
2865 | if (!vbcppValidateCIdentifier(pThis, pszDefine, cchDefine))
|
---|
2866 | return RTEXITCODE_FAILURE;
|
---|
2867 | if (pszParams[cchParams - 1] != ')')
|
---|
2868 | return vbcppErrorPos(pThis, pszParams + cchParams - 1, "Missing closing parenthesis");
|
---|
2869 | pszParams++;
|
---|
2870 | cchParams -= 2;
|
---|
2871 | return vbcppMacroAddFn(pThis, pszDefine, cchDefine, pszParams, cchParams, pszValue, cchValue, fCmdLine);
|
---|
2872 | }
|
---|
2873 |
|
---|
2874 | /*
|
---|
2875 | * Simple define, no arguments.
|
---|
2876 | */
|
---|
2877 | if (!vbcppValidateCIdentifier(pThis, pszDefine, cchDefine))
|
---|
2878 | return RTEXITCODE_FAILURE;
|
---|
2879 |
|
---|
2880 | PVBCPPMACRO pMacro = (PVBCPPMACRO)RTMemAlloc(RT_UOFFSETOF_DYN(VBCPPMACRO, szValue[cchValue + 1 + cchDefine + 1]));
|
---|
2881 | if (!pMacro)
|
---|
2882 | return RTMsgErrorExit(RTEXITCODE_FAILURE, "out of memory");
|
---|
2883 |
|
---|
2884 | pMacro->Core.pszString = &pMacro->szValue[cchValue + 1];
|
---|
2885 | memcpy((char *)pMacro->Core.pszString, pszDefine, cchDefine);
|
---|
2886 | ((char *)pMacro->Core.pszString)[cchDefine] = '\0';
|
---|
2887 | pMacro->fFunction = false;
|
---|
2888 | pMacro->fVarArg = false;
|
---|
2889 | pMacro->fCmdLine = fCmdLine;
|
---|
2890 | pMacro->fExpanding = false;
|
---|
2891 | pMacro->cArgs = 0;
|
---|
2892 | pMacro->papszArgs = NULL;
|
---|
2893 | VBCPP_BITMAP_EMPTY(pMacro->bmArgs);
|
---|
2894 | pMacro->cchValue = cchValue;
|
---|
2895 | memcpy(pMacro->szValue, pszValue, cchValue);
|
---|
2896 | pMacro->szValue[cchValue] = '\0';
|
---|
2897 |
|
---|
2898 | return vbcppMacroInsert(pThis, pMacro);
|
---|
2899 | }
|
---|
2900 |
|
---|
2901 |
|
---|
2902 | /**
|
---|
2903 | * Tries to convert a define into an inline D constant.
|
---|
2904 | *
|
---|
2905 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
2906 | * @param pThis The C preprocessor instance.
|
---|
2907 | * @param pMacro The macro.
|
---|
2908 | */
|
---|
2909 | static RTEXITCODE vbcppMacroTryConvertToInlineD(PVBCPP pThis, PVBCPPMACRO pMacro)
|
---|
2910 | {
|
---|
2911 | AssertReturn(pMacro, vbcppError(pThis, "Internal error"));
|
---|
2912 | if (pMacro->fFunction)
|
---|
2913 | return RTEXITCODE_SUCCESS;
|
---|
2914 |
|
---|
2915 | /*
|
---|
2916 | * Do some simple macro resolving. (Mostly to make x86.h work.)
|
---|
2917 | */
|
---|
2918 | const char *pszDefine = pMacro->Core.pszString;
|
---|
2919 | const char *pszValue = pMacro->szValue;
|
---|
2920 | size_t cchValue = pMacro->cchValue;
|
---|
2921 |
|
---|
2922 | unsigned i = 0;
|
---|
2923 | PVBCPPMACRO pMacro2;
|
---|
2924 | while ( i < 10
|
---|
2925 | && cchValue > 0
|
---|
2926 | && vbcppIsCIdentifierLeadChar(*pszValue)
|
---|
2927 | && (pMacro2 = vbcppMacroLookup(pThis, pszValue, cchValue)) != NULL
|
---|
2928 | && !pMacro2->fFunction )
|
---|
2929 | {
|
---|
2930 | pszValue = pMacro2->szValue;
|
---|
2931 | cchValue = pMacro2->cchValue;
|
---|
2932 | i++;
|
---|
2933 | }
|
---|
2934 |
|
---|
2935 | if (!pMacro->cchValue)
|
---|
2936 | return RTEXITCODE_SUCCESS;
|
---|
2937 |
|
---|
2938 |
|
---|
2939 | /*
|
---|
2940 | * A lone value?
|
---|
2941 | */
|
---|
2942 | ssize_t cch = 0;
|
---|
2943 | uint64_t u64;
|
---|
2944 | char *pszNext;
|
---|
2945 | int rc = RTStrToUInt64Ex(pszValue, &pszNext, 0, &u64);
|
---|
2946 | if (RT_SUCCESS(rc))
|
---|
2947 | {
|
---|
2948 | if ( rc == VWRN_TRAILING_SPACES
|
---|
2949 | || rc == VWRN_NEGATIVE_UNSIGNED
|
---|
2950 | || rc == VWRN_NUMBER_TOO_BIG)
|
---|
2951 | return RTEXITCODE_SUCCESS;
|
---|
2952 | const char *pszType;
|
---|
2953 | if (rc == VWRN_TRAILING_CHARS)
|
---|
2954 | {
|
---|
2955 | if (!strcmp(pszNext, "u") || !strcmp(pszNext, "U"))
|
---|
2956 | pszType = "uint32_t";
|
---|
2957 | else if (!strcmp(pszNext, "ul") || !strcmp(pszNext, "UL"))
|
---|
2958 | pszType = "uintptr_t";
|
---|
2959 | else if (!strcmp(pszNext, "ull") || !strcmp(pszNext, "ULL"))
|
---|
2960 | pszType = "uint64_t";
|
---|
2961 | else
|
---|
2962 | pszType = NULL;
|
---|
2963 | }
|
---|
2964 | else if (u64 <= UINT8_MAX)
|
---|
2965 | pszType = "uint8_t";
|
---|
2966 | else if (u64 <= UINT16_MAX)
|
---|
2967 | pszType = "uint16_t";
|
---|
2968 | else if (u64 <= UINT32_MAX)
|
---|
2969 | pszType = "uint32_t";
|
---|
2970 | else
|
---|
2971 | pszType = "uint64_t";
|
---|
2972 | if (!pszType)
|
---|
2973 | return RTEXITCODE_SUCCESS;
|
---|
2974 | cch = ScmStreamPrintf(&pThis->StrmOutput, "inline %s %s = %.*s;\n",
|
---|
2975 | pszType, pszDefine, pszNext - pszValue, pszValue);
|
---|
2976 | }
|
---|
2977 | /*
|
---|
2978 | * A value wrapped in a constant macro?
|
---|
2979 | */
|
---|
2980 | else if ( (pszNext = (char *)strchr(pszValue, '(')) != NULL
|
---|
2981 | && pszValue[cchValue - 1] == ')' )
|
---|
2982 | {
|
---|
2983 | size_t cchPrefix = pszNext - pszValue;
|
---|
2984 | size_t cchInnerValue = cchValue - cchPrefix - 2;
|
---|
2985 | const char *pchInnerValue = &pszValue[cchPrefix + 1];
|
---|
2986 | while (cchInnerValue > 0 && RT_C_IS_SPACE(*pchInnerValue))
|
---|
2987 | cchInnerValue--, pchInnerValue++;
|
---|
2988 | while (cchInnerValue > 0 && RT_C_IS_SPACE(pchInnerValue[cchInnerValue - 1]))
|
---|
2989 | cchInnerValue--;
|
---|
2990 | if (!cchInnerValue || !RT_C_IS_XDIGIT(*pchInnerValue))
|
---|
2991 | return RTEXITCODE_SUCCESS;
|
---|
2992 |
|
---|
2993 | rc = RTStrToUInt64Ex(pchInnerValue, &pszNext, 0, &u64);
|
---|
2994 | if ( RT_FAILURE(rc)
|
---|
2995 | || rc == VWRN_TRAILING_SPACES
|
---|
2996 | || rc == VWRN_NEGATIVE_UNSIGNED
|
---|
2997 | || rc == VWRN_NUMBER_TOO_BIG)
|
---|
2998 | return RTEXITCODE_SUCCESS;
|
---|
2999 |
|
---|
3000 | const char *pszType;
|
---|
3001 | #define MY_MATCH_STR(a_sz) (sizeof(a_sz) - 1 == cchPrefix && !strncmp(pszValue, a_sz, sizeof(a_sz) - 1))
|
---|
3002 | if (MY_MATCH_STR("UINT8_C"))
|
---|
3003 | pszType = "uint8_t";
|
---|
3004 | else if (MY_MATCH_STR("UINT16_C"))
|
---|
3005 | pszType = "uint16_t";
|
---|
3006 | else if (MY_MATCH_STR("UINT32_C"))
|
---|
3007 | pszType = "uint32_t";
|
---|
3008 | else if (MY_MATCH_STR("UINT64_C"))
|
---|
3009 | pszType = "uint64_t";
|
---|
3010 | else
|
---|
3011 | pszType = NULL;
|
---|
3012 | if (pszType)
|
---|
3013 | cch = ScmStreamPrintf(&pThis->StrmOutput, "inline %s %s = %.*s;\n",
|
---|
3014 | pszType, pszDefine, cchInnerValue, pchInnerValue);
|
---|
3015 | else if (MY_MATCH_STR("RT_BIT") || MY_MATCH_STR("RT_BIT_32"))
|
---|
3016 | cch = ScmStreamPrintf(&pThis->StrmOutput, "inline uint32_t %s = 1U << %llu;\n",
|
---|
3017 | pszDefine, u64);
|
---|
3018 | else if (MY_MATCH_STR("RT_BIT_64"))
|
---|
3019 | cch = ScmStreamPrintf(&pThis->StrmOutput, "inline uint64_t %s = 1ULL << %llu;\n",
|
---|
3020 | pszDefine, u64);
|
---|
3021 | else
|
---|
3022 | return RTEXITCODE_SUCCESS;
|
---|
3023 | #undef MY_MATCH_STR
|
---|
3024 | }
|
---|
3025 | /* Dunno what this is... */
|
---|
3026 | else
|
---|
3027 | return RTEXITCODE_SUCCESS;
|
---|
3028 |
|
---|
3029 | /*
|
---|
3030 | * Check for output error and clear the output suppression indicator.
|
---|
3031 | */
|
---|
3032 | if (cch < 0)
|
---|
3033 | return vbcppError(pThis, "Output error");
|
---|
3034 |
|
---|
3035 | pThis->fJustDroppedLine = false;
|
---|
3036 | return RTEXITCODE_SUCCESS;
|
---|
3037 | }
|
---|
3038 |
|
---|
3039 |
|
---|
3040 |
|
---|
3041 | /**
|
---|
3042 | * Processes a abbreviated line number directive.
|
---|
3043 | *
|
---|
3044 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
3045 | * @param pThis The C preprocessor instance.
|
---|
3046 | * @param pStrmInput The input stream.
|
---|
3047 | * @param offStart The stream position where the directive
|
---|
3048 | * started (for pass thru).
|
---|
3049 | */
|
---|
3050 | static RTEXITCODE vbcppDirectiveDefine(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart)
|
---|
3051 | {
|
---|
3052 | RT_NOREF_PV(offStart);
|
---|
3053 |
|
---|
3054 | /*
|
---|
3055 | * Parse it.
|
---|
3056 | */
|
---|
3057 | RTEXITCODE rcExit = vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
3058 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
3059 | {
|
---|
3060 | size_t cchDefine;
|
---|
3061 | const char *pchDefine = ScmStreamCGetWord(pStrmInput, &cchDefine);
|
---|
3062 | if (pchDefine)
|
---|
3063 | {
|
---|
3064 | /* If it's a function style define, parse out the parameter list. */
|
---|
3065 | size_t cchParams = 0;
|
---|
3066 | const char *pchParams = NULL;
|
---|
3067 | unsigned ch = ScmStreamPeekCh(pStrmInput);
|
---|
3068 | if (ch == '(')
|
---|
3069 | {
|
---|
3070 | ScmStreamGetCh(pStrmInput);
|
---|
3071 | pchParams = ScmStreamGetCur(pStrmInput);
|
---|
3072 |
|
---|
3073 | unsigned chPrev = ch;
|
---|
3074 | while ((ch = ScmStreamPeekCh(pStrmInput)) != ~(unsigned)0)
|
---|
3075 | {
|
---|
3076 | if (ch == '\r' || ch == '\n')
|
---|
3077 | {
|
---|
3078 | if (chPrev != '\\')
|
---|
3079 | {
|
---|
3080 | rcExit = vbcppError(pThis, "Missing ')'");
|
---|
3081 | break;
|
---|
3082 | }
|
---|
3083 | ScmStreamSeekByLine(pStrmInput, ScmStreamTellLine(pStrmInput) + 1);
|
---|
3084 | }
|
---|
3085 | if (ch == ')')
|
---|
3086 | {
|
---|
3087 | cchParams = ScmStreamGetCur(pStrmInput) - pchParams;
|
---|
3088 | ScmStreamGetCh(pStrmInput);
|
---|
3089 | break;
|
---|
3090 | }
|
---|
3091 | chPrev = ch;
|
---|
3092 | ScmStreamGetCh(pStrmInput);
|
---|
3093 | }
|
---|
3094 | }
|
---|
3095 | /* The simple kind. */
|
---|
3096 | else if (!RT_C_IS_SPACE(ch) && ch != ~(unsigned)0)
|
---|
3097 | rcExit = vbcppError(pThis, "Expected whitespace after macro name");
|
---|
3098 |
|
---|
3099 | /* Parse out the value. */
|
---|
3100 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
3101 | rcExit = vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
3102 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
3103 | {
|
---|
3104 | size_t offValue = ScmStreamTell(pStrmInput);
|
---|
3105 | const char *pchValue = ScmStreamGetCur(pStrmInput);
|
---|
3106 | unsigned chPrev = ch;
|
---|
3107 | while ((ch = ScmStreamPeekCh(pStrmInput)) != ~(unsigned)0)
|
---|
3108 | {
|
---|
3109 | if (ch == '\r' || ch == '\n')
|
---|
3110 | {
|
---|
3111 | if (chPrev != '\\')
|
---|
3112 | break;
|
---|
3113 | ScmStreamSeekByLine(pStrmInput, ScmStreamTellLine(pStrmInput) + 1);
|
---|
3114 | }
|
---|
3115 | chPrev = ScmStreamGetCh(pStrmInput);
|
---|
3116 | }
|
---|
3117 | size_t cchValue = ScmStreamGetCur(pStrmInput) - pchValue;
|
---|
3118 |
|
---|
3119 | /*
|
---|
3120 | * Execute.
|
---|
3121 | */
|
---|
3122 | if (pchParams)
|
---|
3123 | rcExit = vbcppMacroAddFn(pThis, pchDefine, cchDefine, pchParams, cchParams, pchValue, cchValue, false);
|
---|
3124 | else
|
---|
3125 | rcExit = vbcppMacroAdd(pThis, pchDefine, cchDefine, pchValue, cchValue, false);
|
---|
3126 |
|
---|
3127 | /*
|
---|
3128 | * Pass thru?
|
---|
3129 | */
|
---|
3130 | if ( rcExit == RTEXITCODE_SUCCESS
|
---|
3131 | && pThis->fPassThruDefines)
|
---|
3132 | {
|
---|
3133 | unsigned cchIndent = pThis->pCondStack ? pThis->pCondStack->iKeepLevel : 0;
|
---|
3134 | ssize_t cch;
|
---|
3135 | if (pchParams)
|
---|
3136 | cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*sdefine %.*s(%.*s)",
|
---|
3137 | cchIndent, "", cchDefine, pchDefine, cchParams, pchParams);
|
---|
3138 | else
|
---|
3139 | cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*sdefine %.*s",
|
---|
3140 | cchIndent, "", cchDefine, pchDefine);
|
---|
3141 | if (cch > 0)
|
---|
3142 | vbcppOutputComment(pThis, pStrmInput, offValue, cch, 1);
|
---|
3143 | else
|
---|
3144 | rcExit = vbcppError(pThis, "output error");
|
---|
3145 | }
|
---|
3146 | else if ( rcExit == RTEXITCODE_SUCCESS
|
---|
3147 | && pThis->enmMode == kVBCppMode_SelectiveD)
|
---|
3148 | rcExit = vbcppMacroTryConvertToInlineD(pThis, vbcppMacroLookup(pThis, pchDefine, cchDefine));
|
---|
3149 | else
|
---|
3150 | pThis->fJustDroppedLine = true;
|
---|
3151 | }
|
---|
3152 | }
|
---|
3153 | }
|
---|
3154 | return rcExit;
|
---|
3155 | }
|
---|
3156 |
|
---|
3157 |
|
---|
3158 | /**
|
---|
3159 | * Processes a abbreviated line number directive.
|
---|
3160 | *
|
---|
3161 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
3162 | * @param pThis The C preprocessor instance.
|
---|
3163 | * @param pStrmInput The input stream.
|
---|
3164 | * @param offStart The stream position where the directive
|
---|
3165 | * started (for pass thru).
|
---|
3166 | */
|
---|
3167 | static RTEXITCODE vbcppDirectiveUndef(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart)
|
---|
3168 | {
|
---|
3169 | RT_NOREF_PV(offStart);
|
---|
3170 |
|
---|
3171 | /*
|
---|
3172 | * Parse it.
|
---|
3173 | */
|
---|
3174 | RTEXITCODE rcExit = vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
3175 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
3176 | {
|
---|
3177 | size_t cchDefine;
|
---|
3178 | const char *pchDefine = ScmStreamCGetWord(pStrmInput, &cchDefine);
|
---|
3179 | if (pchDefine)
|
---|
3180 | {
|
---|
3181 | size_t offMaybeComment = vbcppProcessSkipWhite(pStrmInput);
|
---|
3182 | rcExit = vbcppProcessSkipWhiteEscapedEolAndCommentsCheckEol(pThis, pStrmInput);
|
---|
3183 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
3184 | {
|
---|
3185 | /*
|
---|
3186 | * Take action.
|
---|
3187 | */
|
---|
3188 | PVBCPPMACRO pMacro = vbcppMacroLookup(pThis, pchDefine, cchDefine);
|
---|
3189 | if ( pMacro
|
---|
3190 | && pThis->fRespectSourceDefines
|
---|
3191 | && ( !pMacro->fCmdLine
|
---|
3192 | || pThis->fAllowRedefiningCmdLineDefines ) )
|
---|
3193 | {
|
---|
3194 | RTStrSpaceRemove(&pThis->StrSpace, pMacro->Core.pszString);
|
---|
3195 | vbcppMacroFree(&pMacro->Core, NULL);
|
---|
3196 | }
|
---|
3197 |
|
---|
3198 | /*
|
---|
3199 | * Pass thru.
|
---|
3200 | */
|
---|
3201 | if ( rcExit == RTEXITCODE_SUCCESS
|
---|
3202 | && pThis->fPassThruDefines)
|
---|
3203 | {
|
---|
3204 | unsigned cchIndent = pThis->pCondStack ? pThis->pCondStack->iKeepLevel : 0;
|
---|
3205 | ssize_t cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*sundef %.*s",
|
---|
3206 | cchIndent, "", cchDefine, pchDefine);
|
---|
3207 | if (cch > 0)
|
---|
3208 | vbcppOutputComment(pThis, pStrmInput, offMaybeComment, cch, 1);
|
---|
3209 | else
|
---|
3210 | rcExit = vbcppError(pThis, "output error");
|
---|
3211 | }
|
---|
3212 |
|
---|
3213 | }
|
---|
3214 | }
|
---|
3215 | else
|
---|
3216 | rcExit = vbcppError(pThis, "Malformed #ifndef");
|
---|
3217 | }
|
---|
3218 | return rcExit;
|
---|
3219 |
|
---|
3220 | }
|
---|
3221 |
|
---|
3222 |
|
---|
3223 |
|
---|
3224 |
|
---|
3225 |
|
---|
3226 | /*
|
---|
3227 | *
|
---|
3228 | *
|
---|
3229 | * C O N D I T I O N A L S
|
---|
3230 | * C O N D I T I O N A L S
|
---|
3231 | * C O N D I T I O N A L S
|
---|
3232 | * C O N D I T I O N A L S
|
---|
3233 | * C O N D I T I O N A L S
|
---|
3234 | *
|
---|
3235 | *
|
---|
3236 | */
|
---|
3237 |
|
---|
3238 |
|
---|
3239 | /**
|
---|
3240 | * Combines current stack result with the one being pushed.
|
---|
3241 | *
|
---|
3242 | * @returns Combined result.
|
---|
3243 | * @param enmEvalPush The result of the condition being pushed.
|
---|
3244 | * @param enmEvalStack The current stack result.
|
---|
3245 | */
|
---|
3246 | static VBCPPEVAL vbcppCondCombine(VBCPPEVAL enmEvalPush, VBCPPEVAL enmEvalStack)
|
---|
3247 | {
|
---|
3248 | if (enmEvalStack == kVBCppEval_False)
|
---|
3249 | return kVBCppEval_False;
|
---|
3250 | return enmEvalPush;
|
---|
3251 | }
|
---|
3252 |
|
---|
3253 |
|
---|
3254 | /**
|
---|
3255 | * Pushes an conditional onto the stack.
|
---|
3256 | *
|
---|
3257 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
3258 | * @param pThis The C preprocessor instance.
|
---|
3259 | * @param pStrmInput The current input stream.
|
---|
3260 | * @param offStart Not currently used, using @a pchCondition and
|
---|
3261 | * @a cchCondition instead.
|
---|
3262 | * @param enmKind The kind of conditional.
|
---|
3263 | * @param enmResult The result of the evaluation.
|
---|
3264 | * @param pchCondition The raw condition.
|
---|
3265 | * @param cchCondition The length of @a pchCondition.
|
---|
3266 | */
|
---|
3267 | static RTEXITCODE vbcppCondPush(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart,
|
---|
3268 | VBCPPCONDKIND enmKind, VBCPPEVAL enmResult,
|
---|
3269 | const char *pchCondition, size_t cchCondition)
|
---|
3270 | {
|
---|
3271 | RT_NOREF_PV(offStart); RT_NOREF_PV(pStrmInput);
|
---|
3272 |
|
---|
3273 |
|
---|
3274 | if (pThis->cCondStackDepth >= _64K)
|
---|
3275 | return vbcppError(pThis, "Too many nested #if/#ifdef/#ifndef statements");
|
---|
3276 |
|
---|
3277 | /*
|
---|
3278 | * Allocate a new entry and push it.
|
---|
3279 | */
|
---|
3280 | PVBCPPCOND pCond = (PVBCPPCOND)RTMemAlloc(sizeof(*pCond));
|
---|
3281 | if (!pCond)
|
---|
3282 | return vbcppError(pThis, "out of memory");
|
---|
3283 |
|
---|
3284 | PVBCPPCOND pUp = pThis->pCondStack;
|
---|
3285 | pCond->enmKind = enmKind;
|
---|
3286 | pCond->enmResult = enmResult;
|
---|
3287 | pCond->enmStackResult = pUp ? vbcppCondCombine(enmResult, pUp->enmStackResult) : enmResult;
|
---|
3288 | pCond->fSeenElse = false;
|
---|
3289 | pCond->fElIfDecided = enmResult == kVBCppEval_True;
|
---|
3290 | pCond->iLevel = pThis->cCondStackDepth;
|
---|
3291 | pCond->iKeepLevel = (pUp ? pUp->iKeepLevel : 0) + (enmResult == kVBCppEval_Undecided);
|
---|
3292 | pCond->pchCond = pchCondition;
|
---|
3293 | pCond->cchCond = cchCondition;
|
---|
3294 |
|
---|
3295 | pCond->pUp = pThis->pCondStack;
|
---|
3296 | pThis->pCondStack = pCond;
|
---|
3297 | pThis->fIf0Mode = pCond->enmStackResult == kVBCppEval_False;
|
---|
3298 |
|
---|
3299 | /*
|
---|
3300 | * Do pass thru.
|
---|
3301 | */
|
---|
3302 | if ( !pThis->fIf0Mode
|
---|
3303 | && enmResult == kVBCppEval_Undecided)
|
---|
3304 | {
|
---|
3305 | /** @todo this is stripping comments of \#ifdef and \#ifndef atm. */
|
---|
3306 | const char *pszDirective;
|
---|
3307 | switch (enmKind)
|
---|
3308 | {
|
---|
3309 | case kVBCppCondKind_If: pszDirective = "if"; break;
|
---|
3310 | case kVBCppCondKind_IfDef: pszDirective = "ifdef"; break;
|
---|
3311 | case kVBCppCondKind_IfNDef: pszDirective = "ifndef"; break;
|
---|
3312 | case kVBCppCondKind_ElIf: pszDirective = "elif"; break;
|
---|
3313 | default: AssertFailedReturn(RTEXITCODE_FAILURE);
|
---|
3314 | }
|
---|
3315 | ssize_t cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*s%s %.*s",
|
---|
3316 | pCond->iKeepLevel - 1, "", pszDirective, cchCondition, pchCondition);
|
---|
3317 | if (cch < 0)
|
---|
3318 | return vbcppError(pThis, "Output error %Rrc", (int)cch);
|
---|
3319 | }
|
---|
3320 | else
|
---|
3321 | pThis->fJustDroppedLine = true;
|
---|
3322 |
|
---|
3323 | return RTEXITCODE_SUCCESS;
|
---|
3324 | }
|
---|
3325 |
|
---|
3326 |
|
---|
3327 | /**
|
---|
3328 | * Recursively destroys the expression tree.
|
---|
3329 | *
|
---|
3330 | * @param pExpr The root of the expression tree to destroy.
|
---|
3331 | */
|
---|
3332 | static void vbcppExprDestoryTree(PVBCPPEXPR pExpr)
|
---|
3333 | {
|
---|
3334 | if (!pExpr)
|
---|
3335 | return;
|
---|
3336 |
|
---|
3337 | switch (pExpr->enmKind)
|
---|
3338 | {
|
---|
3339 | case kVBCppExprKind_Unary:
|
---|
3340 | vbcppExprDestoryTree(pExpr->u.Unary.pArg);
|
---|
3341 | break;
|
---|
3342 | case kVBCppExprKind_Binary:
|
---|
3343 | vbcppExprDestoryTree(pExpr->u.Binary.pLeft);
|
---|
3344 | vbcppExprDestoryTree(pExpr->u.Binary.pRight);
|
---|
3345 | break;
|
---|
3346 | case kVBCppExprKind_Ternary:
|
---|
3347 | vbcppExprDestoryTree(pExpr->u.Ternary.pExpr);
|
---|
3348 | vbcppExprDestoryTree(pExpr->u.Ternary.pTrue);
|
---|
3349 | vbcppExprDestoryTree(pExpr->u.Ternary.pFalse);
|
---|
3350 | break;
|
---|
3351 | case kVBCppExprKind_SignedValue:
|
---|
3352 | case kVBCppExprKind_UnsignedValue:
|
---|
3353 | break;
|
---|
3354 | case kVBCppExprKind_UndefMacroCall:
|
---|
3355 | pExpr->u.UndefMacroCall.pszName = NULL;
|
---|
3356 | for (size_t i = 0; i < pExpr->u.UndefMacroCall.cArgs; i++)
|
---|
3357 | vbcppExprDestoryTree(pExpr->u.UndefMacroCall.papArgs[i]);
|
---|
3358 | RTMemFree(pExpr->u.UndefMacroCall.papArgs);
|
---|
3359 | RTMemFree(pExpr->u.UndefMacroCall.pszName);
|
---|
3360 | break;
|
---|
3361 | default:
|
---|
3362 | AssertFailed();
|
---|
3363 | return;
|
---|
3364 | }
|
---|
3365 | RTMemFree(pExpr);
|
---|
3366 | }
|
---|
3367 |
|
---|
3368 |
|
---|
3369 | /**
|
---|
3370 | * Report error during expression parsing.
|
---|
3371 | *
|
---|
3372 | * @returns kExprRet_Error
|
---|
3373 | * @param pParser The parser instance.
|
---|
3374 | * @param pszMsg The error message.
|
---|
3375 | * @param ... Format arguments.
|
---|
3376 | */
|
---|
3377 | static VBCPPEXPRRET vbcppExprParseError(PVBCPPEXPRPARSER pParser, const char *pszMsg, ...)
|
---|
3378 | {
|
---|
3379 | va_list va;
|
---|
3380 | va_start(va, pszMsg);
|
---|
3381 | vbcppErrorV(pParser->pThis, pszMsg, va);
|
---|
3382 | va_end(va);
|
---|
3383 | return kExprRet_Error;
|
---|
3384 | }
|
---|
3385 |
|
---|
3386 |
|
---|
3387 | /**
|
---|
3388 | * Skip white space.
|
---|
3389 | *
|
---|
3390 | * @param pParser The parser instance.
|
---|
3391 | */
|
---|
3392 | static void vbcppExprParseSkipWhiteSpace(PVBCPPEXPRPARSER pParser)
|
---|
3393 | {
|
---|
3394 | while (RT_C_IS_SPACE(*pParser->pszCur))
|
---|
3395 | pParser->pszCur++;
|
---|
3396 | }
|
---|
3397 |
|
---|
3398 |
|
---|
3399 | /**
|
---|
3400 | * Allocate a new
|
---|
3401 | *
|
---|
3402 | * @returns Pointer to the node. NULL+msg on failure.
|
---|
3403 | * @param pParser The parser instance.
|
---|
3404 | */
|
---|
3405 | static PVBCPPEXPR vbcppExprParseAllocNode(PVBCPPEXPRPARSER pParser)
|
---|
3406 | {
|
---|
3407 | PVBCPPEXPR pExpr = (PVBCPPEXPR)RTMemAllocZ(sizeof(*pExpr));
|
---|
3408 | if (!pExpr)
|
---|
3409 | vbcppExprParseError(pParser, "out of memory (expression node)");
|
---|
3410 | return pExpr;
|
---|
3411 | }
|
---|
3412 |
|
---|
3413 |
|
---|
3414 | /**
|
---|
3415 | * Checks if we're currently in an call to an undefined macro.
|
---|
3416 | *
|
---|
3417 | * This will walk up the expression chain and check for a call node while also
|
---|
3418 | * taking parenthesis nodes into account.
|
---|
3419 | *
|
---|
3420 | * @returns true if we are, false if we aren't.
|
---|
3421 | * @param pParser The parser instance.
|
---|
3422 | */
|
---|
3423 | static bool vbcppExprParseIsInUndefCall(PVBCPPEXPRPARSER pParser)
|
---|
3424 | {
|
---|
3425 | PVBCPPEXPR pExpr = pParser->pCur;
|
---|
3426 | while (pExpr)
|
---|
3427 | {
|
---|
3428 | if (pExpr->enmKind == kVBCppExprKind_UndefMacroCall)
|
---|
3429 | return true;
|
---|
3430 | if ( pExpr->enmKind == kVBCppExprKind_Unary
|
---|
3431 | && pExpr->u.Unary.enmOperator == kVBCppUnaryOp_Parenthesis)
|
---|
3432 | break;
|
---|
3433 | pExpr = pExpr->pParent;
|
---|
3434 | }
|
---|
3435 | return false;
|
---|
3436 | }
|
---|
3437 |
|
---|
3438 |
|
---|
3439 | /**
|
---|
3440 | * Looks for right parentheses, comma and/or end of expression.
|
---|
3441 | *
|
---|
3442 | * (The comma is only if we're in the context of a undefined macro call.)
|
---|
3443 | *
|
---|
3444 | * @returns Expression status.
|
---|
3445 | * @retval kExprRet_Ok
|
---|
3446 | * @retval kExprRet_Error with msg.
|
---|
3447 | * @retval kExprRet_EndOfExpr
|
---|
3448 | * @param pParser The parser instance.
|
---|
3449 | */
|
---|
3450 | static VBCPPEXPRRET vbcppExprParseMaybeRParenOrEoe(PVBCPPEXPRPARSER pParser)
|
---|
3451 | {
|
---|
3452 | Assert(!pParser->ppCur);
|
---|
3453 | for (;;)
|
---|
3454 | {
|
---|
3455 | vbcppExprParseSkipWhiteSpace(pParser);
|
---|
3456 | char const ch = *pParser->pszCur;
|
---|
3457 | if (ch == '\0')
|
---|
3458 | {
|
---|
3459 | /* Unwind making sure we don't have any incomplete parentheses or
|
---|
3460 | incomplete call expressions on the stack. */
|
---|
3461 | PVBCPPEXPR pCur = pParser->pCur;
|
---|
3462 | Assert(pCur);
|
---|
3463 | for (;;)
|
---|
3464 | {
|
---|
3465 | if (!pCur->fComplete)
|
---|
3466 | {
|
---|
3467 | if ( pCur->enmKind == kVBCppExprKind_Unary
|
---|
3468 | && pCur->u.Unary.enmOperator == kVBCppUnaryOp_Parenthesis)
|
---|
3469 | return vbcppExprParseError(pParser, "Missing right parenthesis");
|
---|
3470 | if (pCur->enmKind == kVBCppExprKind_UndefMacroCall)
|
---|
3471 | return vbcppExprParseError(pParser, "Missing right parenthesis for undefined macro call");
|
---|
3472 | }
|
---|
3473 | if (pCur->pParent)
|
---|
3474 | pCur = pCur->pParent;
|
---|
3475 | else
|
---|
3476 | {
|
---|
3477 | pParser->pCur = pCur;
|
---|
3478 | pParser->ppCur = NULL;
|
---|
3479 | return kExprRet_EndOfExpr;
|
---|
3480 | }
|
---|
3481 | }
|
---|
3482 | }
|
---|
3483 |
|
---|
3484 | if (ch != ')' && (ch != ',' || !vbcppExprParseIsInUndefCall(pParser))) /** @todo just immediate? */
|
---|
3485 | break;
|
---|
3486 | pParser->pszCur++;
|
---|
3487 |
|
---|
3488 | PVBCPPEXPR pCur = pParser->pCur;
|
---|
3489 | while ( pCur
|
---|
3490 | && ( pCur->enmKind != kVBCppExprKind_UndefMacroCall
|
---|
3491 | || pCur->fComplete /*?*/)
|
---|
3492 | && ( pCur->enmKind != kVBCppExprKind_Unary
|
---|
3493 | || pCur->u.Unary.enmOperator != kVBCppUnaryOp_Parenthesis
|
---|
3494 | || pCur->fComplete))
|
---|
3495 | {
|
---|
3496 | switch (pCur->enmKind)
|
---|
3497 | {
|
---|
3498 | case kVBCppExprKind_SignedValue:
|
---|
3499 | case kVBCppExprKind_UnsignedValue:
|
---|
3500 | Assert(pCur->fComplete);
|
---|
3501 | break;
|
---|
3502 | case kVBCppExprKind_Unary:
|
---|
3503 | AssertReturn(pCur->u.Unary.pArg, vbcppExprParseError(pParser, "internal error"));
|
---|
3504 | pCur->fComplete = true;
|
---|
3505 | break;
|
---|
3506 | case kVBCppExprKind_Binary:
|
---|
3507 | AssertReturn(pCur->u.Binary.pLeft, vbcppExprParseError(pParser, "internal error"));
|
---|
3508 | AssertReturn(pCur->u.Binary.pRight, vbcppExprParseError(pParser, "internal error"));
|
---|
3509 | pCur->fComplete = true;
|
---|
3510 | break;
|
---|
3511 | case kVBCppExprKind_Ternary:
|
---|
3512 | #if 1 /** @todo Check out the ternary operator implementation. */
|
---|
3513 | return vbcppExprParseError(pParser, "The ternary operator is not implemented");
|
---|
3514 | #else
|
---|
3515 | Assert(pCur->u.Ternary.pExpr);
|
---|
3516 | if (!pCur->u.Ternary.pTrue)
|
---|
3517 | return vbcppExprParseError(pParser, "?!?!?");
|
---|
3518 | if (!pCur->u.Ternary.pFalse)
|
---|
3519 | return vbcppExprParseError(pParser, "?!?!?!?");
|
---|
3520 | pCur->fComplete = true;
|
---|
3521 | #endif
|
---|
3522 | break;
|
---|
3523 | case kVBCppExprKind_UndefMacroCall:
|
---|
3524 | break;
|
---|
3525 | default:
|
---|
3526 | return vbcppExprParseError(pParser, "Internal error (enmKind=%d)", pCur->enmKind);
|
---|
3527 | }
|
---|
3528 | pCur = pCur->pParent;
|
---|
3529 | }
|
---|
3530 | if (!pCur)
|
---|
3531 | return vbcppExprParseError(pParser, "Right parenthesis without a left one");
|
---|
3532 |
|
---|
3533 | /*
|
---|
3534 | * If we got down to an undefined macro call, we make it the current
|
---|
3535 | * parser expression and return EndOfExpr. The call expression is
|
---|
3536 | * completed if we hit a ')'.
|
---|
3537 | */
|
---|
3538 | if (pCur->enmKind == kVBCppExprKind_UndefMacroCall)
|
---|
3539 | {
|
---|
3540 | pCur->fComplete = ch == ')';
|
---|
3541 | pParser->pCur = pCur;
|
---|
3542 | pParser->ppCur = NULL;
|
---|
3543 | return kExprRet_EndOfExpr;
|
---|
3544 | }
|
---|
3545 |
|
---|
3546 | /*
|
---|
3547 | * Complete the parenthesis expression and make it current.
|
---|
3548 | */
|
---|
3549 | Assert( pCur->enmKind == kVBCppExprKind_Unary
|
---|
3550 | && pCur->u.Unary.enmOperator == kVBCppUnaryOp_Parenthesis);
|
---|
3551 | AssertReturn(pCur->u.Unary.pArg, vbcppExprParseError(pParser, "internal error"));
|
---|
3552 | pCur->fComplete = true;
|
---|
3553 | pParser->pCur = pCur;
|
---|
3554 | pParser->ppCur = NULL;
|
---|
3555 | }
|
---|
3556 |
|
---|
3557 | return kExprRet_Ok;
|
---|
3558 | }
|
---|
3559 |
|
---|
3560 |
|
---|
3561 | /**
|
---|
3562 | * Parses an binary operator.
|
---|
3563 | *
|
---|
3564 | * @returns Expression status.
|
---|
3565 | * @retval kExprRet_Ok
|
---|
3566 | * @retval kExprRet_Error with msg.
|
---|
3567 | * @param pParser The parser instance.
|
---|
3568 | */
|
---|
3569 | static VBCPPEXPRRET vbcppExprParseBinaryOperator(PVBCPPEXPRPARSER pParser)
|
---|
3570 | {
|
---|
3571 | /*
|
---|
3572 | * Binary or ternary operator should follow now.
|
---|
3573 | */
|
---|
3574 | VBCPPBINARYOP enmOp;
|
---|
3575 | char ch = *pParser->pszCur;
|
---|
3576 | switch (ch)
|
---|
3577 | {
|
---|
3578 | case '*':
|
---|
3579 | if (pParser->pszCur[1] == '=')
|
---|
3580 | return vbcppExprParseError(pParser, "The assignment by product operator is not valid in a preprocessor expression");
|
---|
3581 | enmOp = kVBCppBinary_Multiplication;
|
---|
3582 | break;
|
---|
3583 | case '/':
|
---|
3584 | if (pParser->pszCur[1] == '=')
|
---|
3585 | return vbcppExprParseError(pParser, "The assignment by quotient operator is not valid in a preprocessor expression");
|
---|
3586 | enmOp = kVBCppBinary_Division;
|
---|
3587 | break;
|
---|
3588 | case '%':
|
---|
3589 | if (pParser->pszCur[1] == '=')
|
---|
3590 | return vbcppExprParseError(pParser, "The assignment by remainder operator is not valid in a preprocessor expression");
|
---|
3591 | enmOp = kVBCppBinary_Modulo;
|
---|
3592 | break;
|
---|
3593 | case '+':
|
---|
3594 | if (pParser->pszCur[1] == '=')
|
---|
3595 | return vbcppExprParseError(pParser, "The assignment by sum operator is not valid in a preprocessor expression");
|
---|
3596 | enmOp = kVBCppBinary_Addition;
|
---|
3597 | break;
|
---|
3598 | case '-':
|
---|
3599 | if (pParser->pszCur[1] == '=')
|
---|
3600 | return vbcppExprParseError(pParser, "The assignment by difference operator is not valid in a preprocessor expression");
|
---|
3601 | enmOp = kVBCppBinary_Subtraction;
|
---|
3602 | break;
|
---|
3603 | case '<':
|
---|
3604 | enmOp = kVBCppBinary_LessThan;
|
---|
3605 | if (pParser->pszCur[1] == '=')
|
---|
3606 | {
|
---|
3607 | pParser->pszCur++;
|
---|
3608 | enmOp = kVBCppBinary_LessThanOrEqual;
|
---|
3609 | }
|
---|
3610 | else if (pParser->pszCur[1] == '<')
|
---|
3611 | {
|
---|
3612 | pParser->pszCur++;
|
---|
3613 | if (pParser->pszCur[1] == '=')
|
---|
3614 | return vbcppExprParseError(pParser, "The assignment by bitwise left shift operator is not valid in a preprocessor expression");
|
---|
3615 | enmOp = kVBCppBinary_LeftShift;
|
---|
3616 | }
|
---|
3617 | break;
|
---|
3618 | case '>':
|
---|
3619 | enmOp = kVBCppBinary_GreaterThan;
|
---|
3620 | if (pParser->pszCur[1] == '=')
|
---|
3621 | {
|
---|
3622 | pParser->pszCur++;
|
---|
3623 | enmOp = kVBCppBinary_GreaterThanOrEqual;
|
---|
3624 | }
|
---|
3625 | else if (pParser->pszCur[1] == '<')
|
---|
3626 | {
|
---|
3627 | pParser->pszCur++;
|
---|
3628 | if (pParser->pszCur[1] == '=')
|
---|
3629 | return vbcppExprParseError(pParser, "The assignment by bitwise right shift operator is not valid in a preprocessor expression");
|
---|
3630 | enmOp = kVBCppBinary_LeftShift;
|
---|
3631 | }
|
---|
3632 | break;
|
---|
3633 | case '=':
|
---|
3634 | if (pParser->pszCur[1] != '=')
|
---|
3635 | return vbcppExprParseError(pParser, "The assignment operator is not valid in a preprocessor expression");
|
---|
3636 | pParser->pszCur++;
|
---|
3637 | enmOp = kVBCppBinary_EqualTo;
|
---|
3638 | break;
|
---|
3639 |
|
---|
3640 | case '!':
|
---|
3641 | if (pParser->pszCur[1] != '=')
|
---|
3642 | return vbcppExprParseError(pParser, "Expected binary operator, found the unary operator logical NOT");
|
---|
3643 | pParser->pszCur++;
|
---|
3644 | enmOp = kVBCppBinary_NotEqualTo;
|
---|
3645 | break;
|
---|
3646 |
|
---|
3647 | case '&':
|
---|
3648 | if (pParser->pszCur[1] == '=')
|
---|
3649 | return vbcppExprParseError(pParser, "The assignment by bitwise AND operator is not valid in a preprocessor expression");
|
---|
3650 | if (pParser->pszCur[1] == '&')
|
---|
3651 | {
|
---|
3652 | pParser->pszCur++;
|
---|
3653 | enmOp = kVBCppBinary_LogicalAnd;
|
---|
3654 | }
|
---|
3655 | else
|
---|
3656 | enmOp = kVBCppBinary_BitwiseAnd;
|
---|
3657 | break;
|
---|
3658 | case '^':
|
---|
3659 | if (pParser->pszCur[1] == '=')
|
---|
3660 | return vbcppExprParseError(pParser, "The assignment by bitwise XOR operator is not valid in a preprocessor expression");
|
---|
3661 | enmOp = kVBCppBinary_BitwiseXor;
|
---|
3662 | break;
|
---|
3663 | case '|':
|
---|
3664 | if (pParser->pszCur[1] == '=')
|
---|
3665 | return vbcppExprParseError(pParser, "The assignment by bitwise AND operator is not valid in a preprocessor expression");
|
---|
3666 | if (pParser->pszCur[1] == '|')
|
---|
3667 | {
|
---|
3668 | pParser->pszCur++;
|
---|
3669 | enmOp = kVBCppBinary_LogicalOr;
|
---|
3670 | }
|
---|
3671 | else
|
---|
3672 | enmOp = kVBCppBinary_BitwiseOr;
|
---|
3673 | break;
|
---|
3674 | case '~':
|
---|
3675 | return vbcppExprParseError(pParser, "Expected binary operator, found the unary operator bitwise NOT");
|
---|
3676 |
|
---|
3677 | case ':':
|
---|
3678 | case '?':
|
---|
3679 | return vbcppExprParseError(pParser, "The ternary operator is not yet implemented");
|
---|
3680 |
|
---|
3681 | default:
|
---|
3682 | return vbcppExprParseError(pParser, "Expected binary operator, found '%.20s'", pParser->pszCur);
|
---|
3683 | }
|
---|
3684 | pParser->pszCur++;
|
---|
3685 |
|
---|
3686 | /*
|
---|
3687 | * Create a binary operator node.
|
---|
3688 | */
|
---|
3689 | PVBCPPEXPR pExpr = vbcppExprParseAllocNode(pParser);
|
---|
3690 | if (!pExpr)
|
---|
3691 | return kExprRet_Error;
|
---|
3692 | pExpr->fComplete = true;
|
---|
3693 | pExpr->enmKind = kVBCppExprKind_Binary;
|
---|
3694 | pExpr->u.Binary.enmOperator = enmOp;
|
---|
3695 | pExpr->u.Binary.pLeft = NULL;
|
---|
3696 | pExpr->u.Binary.pRight = NULL;
|
---|
3697 |
|
---|
3698 | /*
|
---|
3699 | * Back up the tree until we find our spot.
|
---|
3700 | */
|
---|
3701 | PVBCPPEXPR *ppPlace = NULL;
|
---|
3702 | PVBCPPEXPR pChild = pParser->pCur;
|
---|
3703 | PVBCPPEXPR pParent = pChild->pParent;
|
---|
3704 | while (pParent)
|
---|
3705 | {
|
---|
3706 | if (pParent->enmKind == kVBCppExprKind_Unary)
|
---|
3707 | {
|
---|
3708 | if (pParent->u.Unary.enmOperator == kVBCppUnaryOp_Parenthesis)
|
---|
3709 | {
|
---|
3710 | ppPlace = &pParent->u.Unary.pArg;
|
---|
3711 | break;
|
---|
3712 | }
|
---|
3713 | AssertReturn(pParent->u.Unary.pArg, vbcppExprParseError(pParser, "internal error"));
|
---|
3714 | pParent->fComplete = true;
|
---|
3715 | }
|
---|
3716 | else if (pParent->enmKind == kVBCppExprKind_Binary)
|
---|
3717 | {
|
---|
3718 | AssertReturn(pParent->u.Binary.pLeft, vbcppExprParseError(pParser, "internal error"));
|
---|
3719 | AssertReturn(pParent->u.Binary.pRight, vbcppExprParseError(pParser, "internal error"));
|
---|
3720 | if ((pParent->u.Binary.enmOperator & VBCPPOP_PRECEDENCE_MASK) >= (enmOp & VBCPPOP_PRECEDENCE_MASK))
|
---|
3721 | {
|
---|
3722 | AssertReturn(pChild, vbcppExprParseError(pParser, "internal error"));
|
---|
3723 |
|
---|
3724 | if (pParent->u.Binary.pRight == pChild)
|
---|
3725 | ppPlace = &pParent->u.Binary.pRight;
|
---|
3726 | else
|
---|
3727 | ppPlace = &pParent->u.Binary.pLeft;
|
---|
3728 | AssertReturn(*ppPlace == pChild, vbcppExprParseError(pParser, "internal error"));
|
---|
3729 | break;
|
---|
3730 | }
|
---|
3731 | pParent->fComplete = true;
|
---|
3732 | }
|
---|
3733 | else if (pParent->enmKind == kVBCppExprKind_Ternary)
|
---|
3734 | {
|
---|
3735 | return vbcppExprParseError(pParser, "The ternary operator is not implemented");
|
---|
3736 | }
|
---|
3737 | else if (pParent->enmKind == kVBCppExprKind_UndefMacroCall)
|
---|
3738 | {
|
---|
3739 | ppPlace = &pParent->u.UndefMacroCall.papArgs[pParent->u.UndefMacroCall.cArgs];
|
---|
3740 | break;
|
---|
3741 | }
|
---|
3742 | else
|
---|
3743 | AssertReturn( pParent->enmKind == kVBCppExprKind_SignedValue
|
---|
3744 | || pParent->enmKind == kVBCppExprKind_UnsignedValue,
|
---|
3745 | vbcppExprParseError(pParser, "internal error"));
|
---|
3746 |
|
---|
3747 | /* Up on level */
|
---|
3748 | pChild = pParent;
|
---|
3749 | pParent = pParent->pParent;
|
---|
3750 | }
|
---|
3751 |
|
---|
3752 | /*
|
---|
3753 | * Do the rotation.
|
---|
3754 | */
|
---|
3755 | Assert(pChild);
|
---|
3756 | Assert(pChild->pParent == pParent);
|
---|
3757 | pChild->pParent = pExpr;
|
---|
3758 |
|
---|
3759 | pExpr->u.Binary.pLeft = pChild;
|
---|
3760 | pExpr->pParent = pParent;
|
---|
3761 |
|
---|
3762 | if (!pParent)
|
---|
3763 | pParser->pRoot = pExpr;
|
---|
3764 | else
|
---|
3765 | *ppPlace = pExpr;
|
---|
3766 |
|
---|
3767 | pParser->ppCur = &pExpr->u.Binary.pRight;
|
---|
3768 | pParser->pCur = pExpr;
|
---|
3769 |
|
---|
3770 | return kExprRet_Ok;
|
---|
3771 | }
|
---|
3772 |
|
---|
3773 |
|
---|
3774 | /**
|
---|
3775 | * Deals with right paretheses or/and end of expression, looks for binary
|
---|
3776 | * operators.
|
---|
3777 | *
|
---|
3778 | * @returns Expression status.
|
---|
3779 | * @retval kExprRet_Ok if binary operator was found processed.
|
---|
3780 | * @retval kExprRet_Error with msg.
|
---|
3781 | * @retval kExprRet_EndOfExpr
|
---|
3782 | * @param pParser The parser instance.
|
---|
3783 | */
|
---|
3784 | static VBCPPEXPRRET vbcppExprParseBinaryOrEoeOrRparen(PVBCPPEXPRPARSER pParser)
|
---|
3785 | {
|
---|
3786 | VBCPPEXPRRET enmRet = vbcppExprParseMaybeRParenOrEoe(pParser);
|
---|
3787 | if (enmRet != kExprRet_Ok)
|
---|
3788 | return enmRet;
|
---|
3789 | return vbcppExprParseBinaryOperator(pParser);
|
---|
3790 | }
|
---|
3791 |
|
---|
3792 |
|
---|
3793 | /**
|
---|
3794 | * Worker for vbcppExprParseIdentifier that parses a call to an undefined macro
|
---|
3795 | * in selective mode.
|
---|
3796 | *
|
---|
3797 | * @returns Expression status.
|
---|
3798 | * @retval kExprRet_Ok if binary operator was found processed.
|
---|
3799 | * @retval kExprRet_Error with msg.
|
---|
3800 | * @retval kExprRet_EndOfExpr
|
---|
3801 | * @param pParser The parser instance.
|
---|
3802 | * @param pszMacro The start of the macro name.
|
---|
3803 | * @param cchMacro The length of the macro name.
|
---|
3804 | */
|
---|
3805 | static VBCPPEXPRRET vbcppExprParseUndefMacroCall(PVBCPPEXPRPARSER pParser, const char *pszMacro, size_t cchMacro)
|
---|
3806 | {
|
---|
3807 | /*
|
---|
3808 | * Treat it as a call to an undefined macro function.
|
---|
3809 | */
|
---|
3810 | /* Create a node. */
|
---|
3811 | PVBCPPEXPR const pExpr = vbcppExprParseAllocNode(pParser);
|
---|
3812 | if (!pExpr)
|
---|
3813 | return kExprRet_Error;
|
---|
3814 | pExpr->enmKind = kVBCppExprKind_UndefMacroCall;
|
---|
3815 | pExpr->fComplete = false;
|
---|
3816 | pExpr->u.UndefMacroCall.cArgs = 0;
|
---|
3817 | pExpr->u.UndefMacroCall.papArgs = NULL;
|
---|
3818 | pExpr->u.UndefMacroCall.pszName = RTStrDupN(pszMacro, cchMacro);
|
---|
3819 | AssertReturn(pExpr->u.UndefMacroCall.pszName, vbcppExprParseError(pParser, "out of memory"));
|
---|
3820 |
|
---|
3821 | /* Link it. */
|
---|
3822 | pExpr->pParent = pParser->pCur;
|
---|
3823 | pParser->pCur = pExpr;
|
---|
3824 | *pParser->ppCur = pExpr;
|
---|
3825 | pParser->ppCur = NULL;
|
---|
3826 |
|
---|
3827 | /*
|
---|
3828 | * Parse the argument list.
|
---|
3829 | */
|
---|
3830 | pParser->pszCur++;
|
---|
3831 | for (size_t iArg = 0 ; ; iArg++)
|
---|
3832 | {
|
---|
3833 | /*
|
---|
3834 | * Prepare the next argument expression pointer.
|
---|
3835 | */
|
---|
3836 | if (!(iArg % 16))
|
---|
3837 | {
|
---|
3838 | void *pvNew = RTMemRealloc(pExpr->u.UndefMacroCall.papArgs,
|
---|
3839 | sizeof(pExpr->u.UndefMacroCall.papArgs[0]) * (iArg + 16));
|
---|
3840 | AssertPtrReturn(pvNew, vbcppExprParseError(pParser, "out of memory"));
|
---|
3841 | pExpr->u.UndefMacroCall.papArgs = (PVBCPPEXPR *)pvNew;
|
---|
3842 | }
|
---|
3843 | pExpr->u.UndefMacroCall.papArgs[iArg] = NULL;
|
---|
3844 | pParser->ppCur = &pExpr->u.UndefMacroCall.papArgs[iArg];
|
---|
3845 |
|
---|
3846 | /*
|
---|
3847 | * Do the parsing.
|
---|
3848 | */
|
---|
3849 | for (;;)
|
---|
3850 | {
|
---|
3851 | /*
|
---|
3852 | * Eat unary operators until we hit a value or end of argument/call.
|
---|
3853 | */
|
---|
3854 | VBCPPEXPRRET enmRet;
|
---|
3855 | do
|
---|
3856 | enmRet = vbcppExprParseUnaryOrValue(pParser);
|
---|
3857 | while (enmRet == kExprRet_UnaryOperator);
|
---|
3858 | if (enmRet == kExprRet_EndOfExpr)
|
---|
3859 | break;
|
---|
3860 | if (enmRet == kExprRet_Error)
|
---|
3861 | return enmRet;
|
---|
3862 | AssertReturn(enmRet == kExprRet_Value, vbcppExprParseError(pParser, "Expected value (enmRet=%d)", enmRet));
|
---|
3863 |
|
---|
3864 | /*
|
---|
3865 | * Non-unary operator, right parenthesis or end of argument/call is up next.
|
---|
3866 | */
|
---|
3867 | enmRet = vbcppExprParseBinaryOrEoeOrRparen(pParser);
|
---|
3868 | if (enmRet == kExprRet_EndOfExpr)
|
---|
3869 | break;
|
---|
3870 | if (enmRet == kExprRet_Error)
|
---|
3871 | return enmRet;
|
---|
3872 | AssertReturn(enmRet == kExprRet_Ok, vbcppExprParseError(pParser, "Expected value (enmRet=%d)", enmRet));
|
---|
3873 | }
|
---|
3874 |
|
---|
3875 | /*
|
---|
3876 | * Append the argument and skip past the comma or right parenthesis.
|
---|
3877 | */
|
---|
3878 | if (pExpr->u.UndefMacroCall.papArgs[iArg] != NULL || !pExpr->fComplete)
|
---|
3879 | pExpr->u.UndefMacroCall.cArgs = iArg + 1;
|
---|
3880 |
|
---|
3881 | Assert(pParser->pCur == pExpr);
|
---|
3882 | if (pExpr->fComplete)
|
---|
3883 | break;
|
---|
3884 | }
|
---|
3885 |
|
---|
3886 | pParser->ppCur = NULL;
|
---|
3887 | return kExprRet_Value;
|
---|
3888 | }
|
---|
3889 |
|
---|
3890 |
|
---|
3891 | /**
|
---|
3892 | * Parses an identifier in the expression, replacing it by 0.
|
---|
3893 | *
|
---|
3894 | * All known identifiers has already been replaced by their macro values, so
|
---|
3895 | * what's left are unknown macros. These are replaced by 0.
|
---|
3896 | *
|
---|
3897 | * @returns Expression status.
|
---|
3898 | * @retval kExprRet_Value
|
---|
3899 | * @retval kExprRet_Error with msg.
|
---|
3900 | * @param pParser The parser instance.
|
---|
3901 | */
|
---|
3902 | static VBCPPEXPRRET vbcppExprParseIdentifier(PVBCPPEXPRPARSER pParser)
|
---|
3903 | {
|
---|
3904 | /** @todo don't increment if it's an actively undefined macro. Need to revise
|
---|
3905 | * the expression related code wrt selective preprocessing. */
|
---|
3906 | pParser->cUndefined++;
|
---|
3907 |
|
---|
3908 | /* Find the end. */
|
---|
3909 | const char *pszMacro = pParser->pszCur;
|
---|
3910 | const char *pszNext = pszMacro + 1;
|
---|
3911 | while (vbcppIsCIdentifierChar(*pszNext))
|
---|
3912 | pszNext++;
|
---|
3913 | size_t const cchMacro = pszNext - pszMacro;
|
---|
3914 |
|
---|
3915 | /* Skip spaces and check for parenthesis. */
|
---|
3916 | pParser->pszCur = pszNext;
|
---|
3917 | vbcppExprParseSkipWhiteSpace(pParser);
|
---|
3918 | if (*pParser->pszCur == '(')
|
---|
3919 | {
|
---|
3920 | if (pParser->pThis->enmMode == kVBCppMode_Selective)
|
---|
3921 | return vbcppExprParseUndefMacroCall(pParser, pszMacro, cchMacro);
|
---|
3922 | return vbcppExprParseError(pParser, "%sUnknown unary operator '%.*s'",
|
---|
3923 | pParser->pThis->enmMode != kVBCppMode_Standard ? "TODO selective: " : "",
|
---|
3924 | cchMacro, pszMacro);
|
---|
3925 | }
|
---|
3926 |
|
---|
3927 | /* Create a signed value node. */
|
---|
3928 | PVBCPPEXPR pExpr = vbcppExprParseAllocNode(pParser);
|
---|
3929 | if (!pExpr)
|
---|
3930 | return kExprRet_Error;
|
---|
3931 | pExpr->fComplete = true;
|
---|
3932 | pExpr->enmKind = kVBCppExprKind_UnsignedValue;
|
---|
3933 | pExpr->u.UnsignedValue.u64 = 0;
|
---|
3934 |
|
---|
3935 | /* Link it. */
|
---|
3936 | pExpr->pParent = pParser->pCur;
|
---|
3937 | pParser->pCur = pExpr;
|
---|
3938 | *pParser->ppCur = pExpr;
|
---|
3939 | pParser->ppCur = NULL;
|
---|
3940 |
|
---|
3941 | return kExprRet_Value;
|
---|
3942 | }
|
---|
3943 |
|
---|
3944 |
|
---|
3945 | /**
|
---|
3946 | * Parses an numeric constant in the expression.
|
---|
3947 | *
|
---|
3948 | * @returns Expression status.
|
---|
3949 | * @retval kExprRet_Value
|
---|
3950 | * @retval kExprRet_Error with msg.
|
---|
3951 | * @param pParser The parser instance.
|
---|
3952 | */
|
---|
3953 | static VBCPPEXPRRET vbcppExprParseNumber(PVBCPPEXPRPARSER pParser)
|
---|
3954 | {
|
---|
3955 | bool fSigned;
|
---|
3956 | char *pszNext;
|
---|
3957 | uint64_t u64;
|
---|
3958 | char ch = *pParser->pszCur++;
|
---|
3959 | char ch2 = *pParser->pszCur;
|
---|
3960 | if ( ch == '0'
|
---|
3961 | && (ch2 == 'x' || ch2 == 'X'))
|
---|
3962 | {
|
---|
3963 | ch2 = *++pParser->pszCur;
|
---|
3964 | if (!RT_C_IS_XDIGIT(ch2))
|
---|
3965 | return vbcppExprParseError(pParser, "Expected hex digit following '0x'");
|
---|
3966 | int rc = RTStrToUInt64Ex(pParser->pszCur, &pszNext, 16, &u64);
|
---|
3967 | if ( RT_FAILURE(rc)
|
---|
3968 | || rc == VWRN_NUMBER_TOO_BIG)
|
---|
3969 | return vbcppExprParseError(pParser, "Invalid hex value '%.20s...' (%Rrc)", pParser->pszCur, rc);
|
---|
3970 | fSigned = false;
|
---|
3971 | }
|
---|
3972 | else if (ch == '0')
|
---|
3973 | {
|
---|
3974 | int rc = RTStrToUInt64Ex(pParser->pszCur - 1, &pszNext, 8, &u64);
|
---|
3975 | if ( RT_FAILURE(rc)
|
---|
3976 | || rc == VWRN_NUMBER_TOO_BIG)
|
---|
3977 | return vbcppExprParseError(pParser, "Invalid octal value '%.20s...' (%Rrc)", pParser->pszCur, rc);
|
---|
3978 | fSigned = u64 > (uint64_t)INT64_MAX ? false : true;
|
---|
3979 | }
|
---|
3980 | else
|
---|
3981 | {
|
---|
3982 | int rc = RTStrToUInt64Ex(pParser->pszCur - 1, &pszNext, 10, &u64);
|
---|
3983 | if ( RT_FAILURE(rc)
|
---|
3984 | || rc == VWRN_NUMBER_TOO_BIG)
|
---|
3985 | return vbcppExprParseError(pParser, "Invalid decimal value '%.20s...' (%Rrc)", pParser->pszCur, rc);
|
---|
3986 | fSigned = u64 > (uint64_t)INT64_MAX ? false : true;
|
---|
3987 | }
|
---|
3988 |
|
---|
3989 | /* suffix. */
|
---|
3990 | if (vbcppIsCIdentifierLeadChar(*pszNext))
|
---|
3991 | {
|
---|
3992 | size_t cchSuffix = 1;
|
---|
3993 | while (vbcppIsCIdentifierLeadChar(pszNext[cchSuffix]))
|
---|
3994 | cchSuffix++;
|
---|
3995 |
|
---|
3996 | if (cchSuffix == 1 && (*pszNext == 'u' || *pszNext == 'U'))
|
---|
3997 | fSigned = false;
|
---|
3998 | else if ( cchSuffix == 1
|
---|
3999 | && (*pszNext == 'l' || *pszNext == 'L'))
|
---|
4000 | fSigned = true;
|
---|
4001 | else if ( cchSuffix == 2
|
---|
4002 | && (!strncmp(pszNext, "ul", 2) || !strncmp(pszNext, "UL", 2)))
|
---|
4003 | fSigned = false;
|
---|
4004 | else if ( cchSuffix == 2
|
---|
4005 | && (!strncmp(pszNext, "ll", 2) || !strncmp(pszNext, "LL", 2)))
|
---|
4006 | fSigned = true;
|
---|
4007 | else if ( cchSuffix == 3
|
---|
4008 | && (!strncmp(pszNext, "ull", 3) || !strncmp(pszNext, "ULL", 3)))
|
---|
4009 | fSigned = false;
|
---|
4010 | else
|
---|
4011 | return vbcppExprParseError(pParser, "Invalid number suffix '%.*s'", cchSuffix, pszNext);
|
---|
4012 |
|
---|
4013 | pszNext += cchSuffix;
|
---|
4014 | }
|
---|
4015 | pParser->pszCur = pszNext;
|
---|
4016 |
|
---|
4017 | /* Create a signed value node. */
|
---|
4018 | PVBCPPEXPR pExpr = vbcppExprParseAllocNode(pParser);
|
---|
4019 | if (!pExpr)
|
---|
4020 | return kExprRet_Error;
|
---|
4021 | pExpr->fComplete = true;
|
---|
4022 | if (fSigned)
|
---|
4023 | {
|
---|
4024 | pExpr->enmKind = kVBCppExprKind_SignedValue;
|
---|
4025 | pExpr->u.SignedValue.s64 = (int64_t)u64;
|
---|
4026 | }
|
---|
4027 | else
|
---|
4028 | {
|
---|
4029 | pExpr->enmKind = kVBCppExprKind_UnsignedValue;
|
---|
4030 | pExpr->u.UnsignedValue.u64 = u64;
|
---|
4031 | }
|
---|
4032 |
|
---|
4033 | /* Link it. */
|
---|
4034 | pExpr->pParent = pParser->pCur;
|
---|
4035 | pParser->pCur = pExpr;
|
---|
4036 | *pParser->ppCur = pExpr;
|
---|
4037 | pParser->ppCur = NULL;
|
---|
4038 |
|
---|
4039 | return kExprRet_Value;
|
---|
4040 | }
|
---|
4041 |
|
---|
4042 |
|
---|
4043 | /**
|
---|
4044 | * Parses an character constant in the expression.
|
---|
4045 | *
|
---|
4046 | * @returns Expression status.
|
---|
4047 | * @retval kExprRet_Value
|
---|
4048 | * @retval kExprRet_Error with msg.
|
---|
4049 | * @param pParser The parser instance.
|
---|
4050 | */
|
---|
4051 | static VBCPPEXPRRET vbcppExprParseCharacterConstant(PVBCPPEXPRPARSER pParser)
|
---|
4052 | {
|
---|
4053 | Assert(*pParser->pszCur == '\'');
|
---|
4054 | pParser->pszCur++;
|
---|
4055 | char ch2 = *pParser->pszCur++;
|
---|
4056 | if (ch2 == '\'')
|
---|
4057 | return vbcppExprParseError(pParser, "Empty character constant");
|
---|
4058 | int64_t s64;
|
---|
4059 | if (ch2 == '\\')
|
---|
4060 | {
|
---|
4061 | ch2 = *pParser->pszCur++;
|
---|
4062 | switch (ch2)
|
---|
4063 | {
|
---|
4064 | case '0': s64 = 0x00; break;
|
---|
4065 | case 'n': s64 = 0x0d; break;
|
---|
4066 | case 'r': s64 = 0x0a; break;
|
---|
4067 | case 't': s64 = 0x09; break;
|
---|
4068 | default:
|
---|
4069 | return vbcppExprParseError(pParser, "Escape character '%c' is not implemented", ch2);
|
---|
4070 | }
|
---|
4071 | }
|
---|
4072 | else
|
---|
4073 | s64 = ch2;
|
---|
4074 | if (*pParser->pszCur != '\'')
|
---|
4075 | return vbcppExprParseError(pParser, "Character constant contains more than one character");
|
---|
4076 |
|
---|
4077 | /* Create a signed value node. */
|
---|
4078 | PVBCPPEXPR pExpr = vbcppExprParseAllocNode(pParser);
|
---|
4079 | if (!pExpr)
|
---|
4080 | return kExprRet_Error;
|
---|
4081 | pExpr->fComplete = true;
|
---|
4082 | pExpr->enmKind = kVBCppExprKind_SignedValue;
|
---|
4083 | pExpr->u.SignedValue.s64 = s64;
|
---|
4084 |
|
---|
4085 | /* Link it. */
|
---|
4086 | pExpr->pParent = pParser->pCur;
|
---|
4087 | pParser->pCur = pExpr;
|
---|
4088 | *pParser->ppCur = pExpr;
|
---|
4089 | pParser->ppCur = NULL;
|
---|
4090 |
|
---|
4091 | return kExprRet_Value;
|
---|
4092 | }
|
---|
4093 |
|
---|
4094 |
|
---|
4095 | /**
|
---|
4096 | * Parses a unary operator or a value.
|
---|
4097 | *
|
---|
4098 | * @returns Expression status.
|
---|
4099 | * @retval kExprRet_Value if value was found and processed.
|
---|
4100 | * @retval kExprRet_UnaryOperator if an unary operator was found and processed.
|
---|
4101 | * @retval kExprRet_Error with msg.
|
---|
4102 | * @retval kExprRet_EndOfExpr if reached ',' or ')' if in an undefined call.
|
---|
4103 | * @param pParser The parser instance.
|
---|
4104 | */
|
---|
4105 | static VBCPPEXPRRET vbcppExprParseUnaryOrValue(PVBCPPEXPRPARSER pParser)
|
---|
4106 | {
|
---|
4107 | vbcppExprParseSkipWhiteSpace(pParser);
|
---|
4108 | char ch = *pParser->pszCur;
|
---|
4109 | if (ch == '\0')
|
---|
4110 | return vbcppExprParseError(pParser, "Premature end of expression");
|
---|
4111 |
|
---|
4112 | /*
|
---|
4113 | * Value?
|
---|
4114 | */
|
---|
4115 | if (ch == '\'')
|
---|
4116 | return vbcppExprParseCharacterConstant(pParser);
|
---|
4117 | if (RT_C_IS_DIGIT(ch))
|
---|
4118 | return vbcppExprParseNumber(pParser);
|
---|
4119 | if (ch == '"')
|
---|
4120 | return vbcppExprParseError(pParser, "String litteral");
|
---|
4121 | if (vbcppIsCIdentifierLeadChar(ch))
|
---|
4122 | return vbcppExprParseIdentifier(pParser);
|
---|
4123 |
|
---|
4124 | /*
|
---|
4125 | * Operator?
|
---|
4126 | */
|
---|
4127 | VBCPPUNARYOP enmOperator;
|
---|
4128 | if (ch == '+')
|
---|
4129 | {
|
---|
4130 | enmOperator = kVBCppUnaryOp_Pluss;
|
---|
4131 | if (pParser->pszCur[1] == '+')
|
---|
4132 | return vbcppExprParseError(pParser, "The prefix increment operator is not valid in a preprocessor expression");
|
---|
4133 | }
|
---|
4134 | else if (ch == '-')
|
---|
4135 | {
|
---|
4136 | enmOperator = kVBCppUnaryOp_Minus;
|
---|
4137 | if (pParser->pszCur[1] == '-')
|
---|
4138 | return vbcppExprParseError(pParser, "The prefix decrement operator is not valid in a preprocessor expression");
|
---|
4139 | }
|
---|
4140 | else if (ch == '!')
|
---|
4141 | enmOperator = kVBCppUnaryOp_LogicalNot;
|
---|
4142 | else if (ch == '~')
|
---|
4143 | enmOperator = kVBCppUnaryOp_BitwiseNot;
|
---|
4144 | else if (ch == '(')
|
---|
4145 | enmOperator = kVBCppUnaryOp_Parenthesis;
|
---|
4146 | else if ((ch == ',' || ch == ')') && pParser->pCur->enmKind == kVBCppExprKind_UndefMacroCall)
|
---|
4147 | {
|
---|
4148 | pParser->pszCur++;
|
---|
4149 | pParser->pCur->fComplete = ch == ')';
|
---|
4150 | return kExprRet_EndOfExpr;
|
---|
4151 | }
|
---|
4152 | else
|
---|
4153 | return vbcppExprParseError(pParser, "Unexpected token '%.*s'", 32, pParser->pszCur - 1);
|
---|
4154 | pParser->pszCur++;
|
---|
4155 |
|
---|
4156 | /* Create an operator node. */
|
---|
4157 | PVBCPPEXPR pExpr = vbcppExprParseAllocNode(pParser);
|
---|
4158 | if (!pExpr)
|
---|
4159 | return kExprRet_Error;
|
---|
4160 | pExpr->fComplete = false;
|
---|
4161 | pExpr->enmKind = kVBCppExprKind_Unary;
|
---|
4162 | pExpr->u.Unary.enmOperator = enmOperator;
|
---|
4163 | pExpr->u.Unary.pArg = NULL;
|
---|
4164 |
|
---|
4165 | /* Link it into the tree. */
|
---|
4166 | pExpr->pParent = pParser->pCur;
|
---|
4167 | pParser->pCur = pExpr;
|
---|
4168 | *pParser->ppCur = pExpr;
|
---|
4169 | pParser->ppCur = &pExpr->u.Unary.pArg;
|
---|
4170 |
|
---|
4171 | return kExprRet_UnaryOperator;
|
---|
4172 | }
|
---|
4173 |
|
---|
4174 |
|
---|
4175 | /**
|
---|
4176 | * Parses an expanded preprocessor expression.
|
---|
4177 | *
|
---|
4178 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
4179 | * @param pThis The C preprocessor instance.
|
---|
4180 | * @param pszExpr The expression to parse.
|
---|
4181 | * @param cchExpr The length of the expression in case we need it.
|
---|
4182 | * @param ppExprTree Where to return the parse tree.
|
---|
4183 | * @param pcUndefined Where to return the number of unknown undefined
|
---|
4184 | * macros. Optional.
|
---|
4185 | */
|
---|
4186 | static RTEXITCODE vbcppExprParse(PVBCPP pThis, char *pszExpr, size_t cchExpr, PVBCPPEXPR *ppExprTree, size_t *pcUndefined)
|
---|
4187 | {
|
---|
4188 | RTEXITCODE rcExit = RTEXITCODE_FAILURE;
|
---|
4189 | NOREF(cchExpr);
|
---|
4190 |
|
---|
4191 | /*
|
---|
4192 | * Initialize the parser context structure.
|
---|
4193 | */
|
---|
4194 | VBCPPEXPRPARSER Parser;
|
---|
4195 | Parser.pszCur = pszExpr;
|
---|
4196 | Parser.pRoot = NULL;
|
---|
4197 | Parser.pCur = NULL;
|
---|
4198 | Parser.ppCur = &Parser.pRoot;
|
---|
4199 | Parser.pszExpr = pszExpr;
|
---|
4200 | Parser.cUndefined = 0;
|
---|
4201 | Parser.pThis = pThis;
|
---|
4202 |
|
---|
4203 | /*
|
---|
4204 | * Do the parsing.
|
---|
4205 | */
|
---|
4206 | VBCPPEXPRRET enmRet;
|
---|
4207 | for (;;)
|
---|
4208 | {
|
---|
4209 | /*
|
---|
4210 | * Eat unary operators until we hit a value.
|
---|
4211 | */
|
---|
4212 | do
|
---|
4213 | enmRet = vbcppExprParseUnaryOrValue(&Parser);
|
---|
4214 | while (enmRet == kExprRet_UnaryOperator);
|
---|
4215 | if (enmRet == kExprRet_Error)
|
---|
4216 | break;
|
---|
4217 | AssertBreakStmt(enmRet == kExprRet_Value, enmRet = vbcppExprParseError(&Parser, "Expected value (enmRet=%d)", enmRet));
|
---|
4218 |
|
---|
4219 | /*
|
---|
4220 | * Non-unary operator, right parenthesis or end of expression is up next.
|
---|
4221 | */
|
---|
4222 | enmRet = vbcppExprParseBinaryOrEoeOrRparen(&Parser);
|
---|
4223 | if (enmRet == kExprRet_Error)
|
---|
4224 | break;
|
---|
4225 | if (enmRet == kExprRet_EndOfExpr)
|
---|
4226 | {
|
---|
4227 | /** @todo check if there are any open parentheses. */
|
---|
4228 | rcExit = RTEXITCODE_SUCCESS;
|
---|
4229 | break;
|
---|
4230 | }
|
---|
4231 | AssertBreakStmt(enmRet == kExprRet_Ok, enmRet = vbcppExprParseError(&Parser, "Expected value (enmRet=%d)", enmRet));
|
---|
4232 | }
|
---|
4233 |
|
---|
4234 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
4235 | {
|
---|
4236 | vbcppExprDestoryTree(Parser.pRoot);
|
---|
4237 | return rcExit;
|
---|
4238 | }
|
---|
4239 |
|
---|
4240 | if (pcUndefined)
|
---|
4241 | *pcUndefined = Parser.cUndefined;
|
---|
4242 | *ppExprTree = Parser.pRoot;
|
---|
4243 | return rcExit;
|
---|
4244 | }
|
---|
4245 |
|
---|
4246 |
|
---|
4247 | /**
|
---|
4248 | * Checks if an expression value value is evaluates to @c true or @c false.
|
---|
4249 | *
|
---|
4250 | * @returns @c true or @c false.
|
---|
4251 | * @param pExpr The value expression.
|
---|
4252 | */
|
---|
4253 | static bool vbcppExprIsExprTrue(PVBCPPEXPR pExpr)
|
---|
4254 | {
|
---|
4255 | Assert(pExpr->enmKind == kVBCppExprKind_SignedValue || pExpr->enmKind == kVBCppExprKind_UnsignedValue);
|
---|
4256 |
|
---|
4257 | return pExpr->enmKind == kVBCppExprKind_SignedValue
|
---|
4258 | ? pExpr->u.SignedValue.s64 != 0
|
---|
4259 | : pExpr->u.UnsignedValue.u64 != 0;
|
---|
4260 | }
|
---|
4261 |
|
---|
4262 |
|
---|
4263 | /**
|
---|
4264 | * Evalutes a parse (sub-)tree.
|
---|
4265 | *
|
---|
4266 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
4267 | * @param pThis The C preprocessor instance.
|
---|
4268 | * @param pRoot The root of the parse (sub-)tree.
|
---|
4269 | * @param pResult Where to store the result value.
|
---|
4270 | */
|
---|
4271 | static RTEXITCODE vbcppExprEvaluteTree(PVBCPP pThis, PVBCPPEXPR pRoot, PVBCPPEXPR pResult)
|
---|
4272 | {
|
---|
4273 | RTEXITCODE rcExit;
|
---|
4274 | switch (pRoot->enmKind)
|
---|
4275 | {
|
---|
4276 | case kVBCppExprKind_SignedValue:
|
---|
4277 | pResult->enmKind = kVBCppExprKind_SignedValue;
|
---|
4278 | pResult->u.SignedValue.s64 = pRoot->u.SignedValue.s64;
|
---|
4279 | return RTEXITCODE_SUCCESS;
|
---|
4280 |
|
---|
4281 | case kVBCppExprKind_UnsignedValue:
|
---|
4282 | pResult->enmKind = kVBCppExprKind_UnsignedValue;
|
---|
4283 | pResult->u.UnsignedValue.u64 = pRoot->u.UnsignedValue.u64;
|
---|
4284 | return RTEXITCODE_SUCCESS;
|
---|
4285 |
|
---|
4286 | case kVBCppExprKind_Unary:
|
---|
4287 | rcExit = vbcppExprEvaluteTree(pThis, pRoot->u.Unary.pArg, pResult);
|
---|
4288 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
4289 | return rcExit;
|
---|
4290 |
|
---|
4291 | /* Apply the unary operator to the value */
|
---|
4292 | switch (pRoot->u.Unary.enmOperator)
|
---|
4293 | {
|
---|
4294 | case kVBCppUnaryOp_Minus:
|
---|
4295 | if (pResult->enmKind == kVBCppExprKind_SignedValue)
|
---|
4296 | pResult->u.SignedValue.s64 = -pResult->u.SignedValue.s64;
|
---|
4297 | else
|
---|
4298 | pResult->u.UnsignedValue.u64 = (uint64_t)-(int64_t)pResult->u.UnsignedValue.u64;
|
---|
4299 | break;
|
---|
4300 |
|
---|
4301 | case kVBCppUnaryOp_LogicalNot:
|
---|
4302 | if (pResult->enmKind == kVBCppExprKind_SignedValue)
|
---|
4303 | pResult->u.SignedValue.s64 = !pResult->u.SignedValue.s64;
|
---|
4304 | else
|
---|
4305 | pResult->u.UnsignedValue.u64 = !pResult->u.UnsignedValue.u64;
|
---|
4306 | break;
|
---|
4307 |
|
---|
4308 | case kVBCppUnaryOp_BitwiseNot:
|
---|
4309 | if (pResult->enmKind == kVBCppExprKind_SignedValue)
|
---|
4310 | pResult->u.SignedValue.s64 = ~pResult->u.SignedValue.s64;
|
---|
4311 | else
|
---|
4312 | pResult->u.UnsignedValue.u64 = ~pResult->u.UnsignedValue.u64;
|
---|
4313 | break;
|
---|
4314 |
|
---|
4315 | case kVBCppUnaryOp_Pluss:
|
---|
4316 | case kVBCppUnaryOp_Parenthesis:
|
---|
4317 | /* do nothing. */
|
---|
4318 | break;
|
---|
4319 |
|
---|
4320 | default:
|
---|
4321 | return vbcppError(pThis, "Internal error: u.Unary.enmOperator=%d", pRoot->u.Unary.enmOperator);
|
---|
4322 | }
|
---|
4323 | return RTEXITCODE_SUCCESS;
|
---|
4324 |
|
---|
4325 | case kVBCppExprKind_Binary:
|
---|
4326 | {
|
---|
4327 | /* Always evalute the left side. */
|
---|
4328 | rcExit = vbcppExprEvaluteTree(pThis, pRoot->u.Binary.pLeft, pResult);
|
---|
4329 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
4330 | return rcExit;
|
---|
4331 |
|
---|
4332 | /* If logical AND or OR we can sometimes skip evaluting the right side. */
|
---|
4333 | if ( pRoot->u.Binary.enmOperator == kVBCppBinary_LogicalAnd
|
---|
4334 | && !vbcppExprIsExprTrue(pResult))
|
---|
4335 | return RTEXITCODE_SUCCESS;
|
---|
4336 |
|
---|
4337 | if ( pRoot->u.Binary.enmOperator == kVBCppBinary_LogicalOr
|
---|
4338 | && vbcppExprIsExprTrue(pResult))
|
---|
4339 | return RTEXITCODE_SUCCESS;
|
---|
4340 |
|
---|
4341 | /* Evalute the right side. */
|
---|
4342 | VBCPPEXPR Result2;
|
---|
4343 | rcExit = vbcppExprEvaluteTree(pThis, pRoot->u.Binary.pRight, &Result2);
|
---|
4344 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
4345 | return rcExit;
|
---|
4346 |
|
---|
4347 | /* If one of them is unsigned, promote the other to unsigned as well. */
|
---|
4348 | if ( pResult->enmKind == kVBCppExprKind_UnsignedValue
|
---|
4349 | && Result2.enmKind == kVBCppExprKind_SignedValue)
|
---|
4350 | {
|
---|
4351 | Result2.enmKind = kVBCppExprKind_UnsignedValue;
|
---|
4352 | Result2.u.UnsignedValue.u64 = Result2.u.SignedValue.s64;
|
---|
4353 | }
|
---|
4354 | else if ( pResult->enmKind == kVBCppExprKind_SignedValue
|
---|
4355 | && Result2.enmKind == kVBCppExprKind_UnsignedValue)
|
---|
4356 | {
|
---|
4357 | pResult->enmKind = kVBCppExprKind_UnsignedValue;
|
---|
4358 | pResult->u.UnsignedValue.u64 = pResult->u.SignedValue.s64;
|
---|
4359 | }
|
---|
4360 |
|
---|
4361 | /* Perform the operation. */
|
---|
4362 | if (pResult->enmKind == kVBCppExprKind_UnsignedValue)
|
---|
4363 | {
|
---|
4364 | switch (pRoot->u.Binary.enmOperator)
|
---|
4365 | {
|
---|
4366 | case kVBCppBinary_Multiplication:
|
---|
4367 | pResult->u.UnsignedValue.u64 *= Result2.u.UnsignedValue.u64;
|
---|
4368 | break;
|
---|
4369 | case kVBCppBinary_Division:
|
---|
4370 | if (!Result2.u.UnsignedValue.u64)
|
---|
4371 | return vbcppError(pThis, "Divide by zero");
|
---|
4372 | pResult->u.UnsignedValue.u64 /= Result2.u.UnsignedValue.u64;
|
---|
4373 | break;
|
---|
4374 | case kVBCppBinary_Modulo:
|
---|
4375 | if (!Result2.u.UnsignedValue.u64)
|
---|
4376 | return vbcppError(pThis, "Divide by zero");
|
---|
4377 | pResult->u.UnsignedValue.u64 %= Result2.u.UnsignedValue.u64;
|
---|
4378 | break;
|
---|
4379 | case kVBCppBinary_Addition:
|
---|
4380 | pResult->u.UnsignedValue.u64 += Result2.u.UnsignedValue.u64;
|
---|
4381 | break;
|
---|
4382 | case kVBCppBinary_Subtraction:
|
---|
4383 | pResult->u.UnsignedValue.u64 -= Result2.u.UnsignedValue.u64;
|
---|
4384 | break;
|
---|
4385 | case kVBCppBinary_LeftShift:
|
---|
4386 | pResult->u.UnsignedValue.u64 <<= Result2.u.UnsignedValue.u64;
|
---|
4387 | break;
|
---|
4388 | case kVBCppBinary_RightShift:
|
---|
4389 | pResult->u.UnsignedValue.u64 >>= Result2.u.UnsignedValue.u64;
|
---|
4390 | break;
|
---|
4391 | case kVBCppBinary_LessThan:
|
---|
4392 | pResult->u.UnsignedValue.u64 = pResult->u.UnsignedValue.u64 < Result2.u.UnsignedValue.u64;
|
---|
4393 | break;
|
---|
4394 | case kVBCppBinary_LessThanOrEqual:
|
---|
4395 | pResult->u.UnsignedValue.u64 = pResult->u.UnsignedValue.u64 <= Result2.u.UnsignedValue.u64;
|
---|
4396 | break;
|
---|
4397 | case kVBCppBinary_GreaterThan:
|
---|
4398 | pResult->u.UnsignedValue.u64 = pResult->u.UnsignedValue.u64 > Result2.u.UnsignedValue.u64;
|
---|
4399 | break;
|
---|
4400 | case kVBCppBinary_GreaterThanOrEqual:
|
---|
4401 | pResult->u.UnsignedValue.u64 = pResult->u.UnsignedValue.u64 >= Result2.u.UnsignedValue.u64;
|
---|
4402 | break;
|
---|
4403 | case kVBCppBinary_EqualTo:
|
---|
4404 | pResult->u.UnsignedValue.u64 = pResult->u.UnsignedValue.u64 == Result2.u.UnsignedValue.u64;
|
---|
4405 | break;
|
---|
4406 | case kVBCppBinary_NotEqualTo:
|
---|
4407 | pResult->u.UnsignedValue.u64 = pResult->u.UnsignedValue.u64 != Result2.u.UnsignedValue.u64;
|
---|
4408 | break;
|
---|
4409 | case kVBCppBinary_BitwiseAnd:
|
---|
4410 | pResult->u.UnsignedValue.u64 &= Result2.u.UnsignedValue.u64;
|
---|
4411 | break;
|
---|
4412 | case kVBCppBinary_BitwiseXor:
|
---|
4413 | pResult->u.UnsignedValue.u64 ^= Result2.u.UnsignedValue.u64;
|
---|
4414 | break;
|
---|
4415 | case kVBCppBinary_BitwiseOr:
|
---|
4416 | pResult->u.UnsignedValue.u64 |= Result2.u.UnsignedValue.u64;
|
---|
4417 | break;
|
---|
4418 | case kVBCppBinary_LogicalAnd:
|
---|
4419 | pResult->u.UnsignedValue.u64 = pResult->u.UnsignedValue.u64 && Result2.u.UnsignedValue.u64;
|
---|
4420 | break;
|
---|
4421 | case kVBCppBinary_LogicalOr:
|
---|
4422 | pResult->u.UnsignedValue.u64 = pResult->u.UnsignedValue.u64 || Result2.u.UnsignedValue.u64;
|
---|
4423 | break;
|
---|
4424 | default:
|
---|
4425 | return vbcppError(pThis, "Internal error: u.Binary.enmOperator=%d", pRoot->u.Binary.enmOperator);
|
---|
4426 | }
|
---|
4427 | }
|
---|
4428 | else
|
---|
4429 | {
|
---|
4430 | switch (pRoot->u.Binary.enmOperator)
|
---|
4431 | {
|
---|
4432 | case kVBCppBinary_Multiplication:
|
---|
4433 | pResult->u.SignedValue.s64 *= Result2.u.SignedValue.s64;
|
---|
4434 | break;
|
---|
4435 | case kVBCppBinary_Division:
|
---|
4436 | if (!Result2.u.SignedValue.s64)
|
---|
4437 | return vbcppError(pThis, "Divide by zero");
|
---|
4438 | pResult->u.SignedValue.s64 /= Result2.u.SignedValue.s64;
|
---|
4439 | break;
|
---|
4440 | case kVBCppBinary_Modulo:
|
---|
4441 | if (!Result2.u.SignedValue.s64)
|
---|
4442 | return vbcppError(pThis, "Divide by zero");
|
---|
4443 | pResult->u.SignedValue.s64 %= Result2.u.SignedValue.s64;
|
---|
4444 | break;
|
---|
4445 | case kVBCppBinary_Addition:
|
---|
4446 | pResult->u.SignedValue.s64 += Result2.u.SignedValue.s64;
|
---|
4447 | break;
|
---|
4448 | case kVBCppBinary_Subtraction:
|
---|
4449 | pResult->u.SignedValue.s64 -= Result2.u.SignedValue.s64;
|
---|
4450 | break;
|
---|
4451 | case kVBCppBinary_LeftShift:
|
---|
4452 | pResult->u.SignedValue.s64 <<= Result2.u.SignedValue.s64;
|
---|
4453 | break;
|
---|
4454 | case kVBCppBinary_RightShift:
|
---|
4455 | pResult->u.SignedValue.s64 >>= Result2.u.SignedValue.s64;
|
---|
4456 | break;
|
---|
4457 | case kVBCppBinary_LessThan:
|
---|
4458 | pResult->u.SignedValue.s64 = pResult->u.SignedValue.s64 < Result2.u.SignedValue.s64;
|
---|
4459 | break;
|
---|
4460 | case kVBCppBinary_LessThanOrEqual:
|
---|
4461 | pResult->u.SignedValue.s64 = pResult->u.SignedValue.s64 <= Result2.u.SignedValue.s64;
|
---|
4462 | break;
|
---|
4463 | case kVBCppBinary_GreaterThan:
|
---|
4464 | pResult->u.SignedValue.s64 = pResult->u.SignedValue.s64 > Result2.u.SignedValue.s64;
|
---|
4465 | break;
|
---|
4466 | case kVBCppBinary_GreaterThanOrEqual:
|
---|
4467 | pResult->u.SignedValue.s64 = pResult->u.SignedValue.s64 >= Result2.u.SignedValue.s64;
|
---|
4468 | break;
|
---|
4469 | case kVBCppBinary_EqualTo:
|
---|
4470 | pResult->u.SignedValue.s64 = pResult->u.SignedValue.s64 == Result2.u.SignedValue.s64;
|
---|
4471 | break;
|
---|
4472 | case kVBCppBinary_NotEqualTo:
|
---|
4473 | pResult->u.SignedValue.s64 = pResult->u.SignedValue.s64 != Result2.u.SignedValue.s64;
|
---|
4474 | break;
|
---|
4475 | case kVBCppBinary_BitwiseAnd:
|
---|
4476 | pResult->u.SignedValue.s64 &= Result2.u.SignedValue.s64;
|
---|
4477 | break;
|
---|
4478 | case kVBCppBinary_BitwiseXor:
|
---|
4479 | pResult->u.SignedValue.s64 ^= Result2.u.SignedValue.s64;
|
---|
4480 | break;
|
---|
4481 | case kVBCppBinary_BitwiseOr:
|
---|
4482 | pResult->u.SignedValue.s64 |= Result2.u.SignedValue.s64;
|
---|
4483 | break;
|
---|
4484 | case kVBCppBinary_LogicalAnd:
|
---|
4485 | pResult->u.SignedValue.s64 = pResult->u.SignedValue.s64 && Result2.u.SignedValue.s64;
|
---|
4486 | break;
|
---|
4487 | case kVBCppBinary_LogicalOr:
|
---|
4488 | pResult->u.SignedValue.s64 = pResult->u.SignedValue.s64 || Result2.u.SignedValue.s64;
|
---|
4489 | break;
|
---|
4490 | default:
|
---|
4491 | return vbcppError(pThis, "Internal error: u.Binary.enmOperator=%d", pRoot->u.Binary.enmOperator);
|
---|
4492 | }
|
---|
4493 | }
|
---|
4494 | return rcExit;
|
---|
4495 | }
|
---|
4496 |
|
---|
4497 | case kVBCppExprKind_Ternary:
|
---|
4498 | rcExit = vbcppExprEvaluteTree(pThis, pRoot->u.Ternary.pExpr, pResult);
|
---|
4499 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
4500 | return rcExit;
|
---|
4501 | if (vbcppExprIsExprTrue(pResult))
|
---|
4502 | return vbcppExprEvaluteTree(pThis, pRoot->u.Ternary.pTrue, pResult);
|
---|
4503 | return vbcppExprEvaluteTree(pThis, pRoot->u.Ternary.pFalse, pResult);
|
---|
4504 |
|
---|
4505 | default:
|
---|
4506 | return vbcppError(pThis, "Internal error: enmKind=%d", pRoot->enmKind);
|
---|
4507 | }
|
---|
4508 | }
|
---|
4509 |
|
---|
4510 |
|
---|
4511 | /**
|
---|
4512 | * Evalutes the expression.
|
---|
4513 | *
|
---|
4514 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
4515 | * @param pThis The C preprocessor instance.
|
---|
4516 | * @param pszExpr The expression.
|
---|
4517 | * @param cchExpr The length of the expression.
|
---|
4518 | * @param cReplacements The number of replacements.
|
---|
4519 | * @param cDefinedUnknown The number of defined(UNKNOWN) cases. (Relevant
|
---|
4520 | * for selective modes.)
|
---|
4521 | * @param penmResult Where to store the result.
|
---|
4522 | */
|
---|
4523 | static RTEXITCODE vbcppExprEval(PVBCPP pThis, char *pszExpr, size_t cchExpr, size_t cReplacements, size_t cDefinedUnknown,
|
---|
4524 | VBCPPEVAL *penmResult)
|
---|
4525 | {
|
---|
4526 | Assert(strlen(pszExpr) == cchExpr);
|
---|
4527 | RT_NOREF_PV(cReplacements);
|
---|
4528 |
|
---|
4529 | size_t cUndefined;
|
---|
4530 | PVBCPPEXPR pExprTree;
|
---|
4531 | RTEXITCODE rcExit = vbcppExprParse(pThis, pszExpr, cchExpr, &pExprTree, &cUndefined);
|
---|
4532 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4533 | {
|
---|
4534 | if ( (!cUndefined && !cDefinedUnknown)
|
---|
4535 | || pThis->enmMode == kVBCppMode_SelectiveD
|
---|
4536 | || pThis->enmMode == kVBCppMode_Standard)
|
---|
4537 | {
|
---|
4538 | VBCPPEXPR Result;
|
---|
4539 | rcExit = vbcppExprEvaluteTree(pThis, pExprTree, &Result);
|
---|
4540 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4541 | {
|
---|
4542 | if (vbcppExprIsExprTrue(&Result))
|
---|
4543 | *penmResult = kVBCppEval_True;
|
---|
4544 | else
|
---|
4545 | *penmResult = kVBCppEval_False;
|
---|
4546 | }
|
---|
4547 | }
|
---|
4548 | else
|
---|
4549 | *penmResult = kVBCppEval_Undecided;
|
---|
4550 | }
|
---|
4551 | return rcExit;
|
---|
4552 | }
|
---|
4553 |
|
---|
4554 |
|
---|
4555 | static RTEXITCODE vbcppExtractSkipCommentLine(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
4556 | {
|
---|
4557 | RT_NOREF_PV(pThis);
|
---|
4558 |
|
---|
4559 | unsigned chPrev = ScmStreamGetCh(pStrmInput); Assert(chPrev == '/');
|
---|
4560 | unsigned ch;
|
---|
4561 | while ((ch = ScmStreamPeekCh(pStrmInput)) != ~(unsigned)0)
|
---|
4562 | {
|
---|
4563 | if (ch == '\r' || ch == '\n')
|
---|
4564 | {
|
---|
4565 | if (chPrev != '\\')
|
---|
4566 | break;
|
---|
4567 | ScmStreamSeekByLine(pStrmInput, ScmStreamTellLine(pStrmInput) + 1);
|
---|
4568 | chPrev = ch;
|
---|
4569 | }
|
---|
4570 | else
|
---|
4571 | {
|
---|
4572 | chPrev = ScmStreamGetCh(pStrmInput);
|
---|
4573 | Assert(chPrev == ch);
|
---|
4574 | }
|
---|
4575 | }
|
---|
4576 | return RTEXITCODE_SUCCESS;
|
---|
4577 | }
|
---|
4578 |
|
---|
4579 |
|
---|
4580 | static RTEXITCODE vbcppExtractSkipComment(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
4581 | {
|
---|
4582 | unsigned ch = ScmStreamGetCh(pStrmInput); Assert(ch == '*');
|
---|
4583 | while ((ch = ScmStreamGetCh(pStrmInput)) != ~(unsigned)0)
|
---|
4584 | {
|
---|
4585 | if (ch == '*')
|
---|
4586 | {
|
---|
4587 | ch = ScmStreamGetCh(pStrmInput);
|
---|
4588 | if (ch == '/')
|
---|
4589 | return RTEXITCODE_SUCCESS;
|
---|
4590 | }
|
---|
4591 | }
|
---|
4592 | return vbcppError(pThis, "Expected '*/'");
|
---|
4593 | }
|
---|
4594 |
|
---|
4595 |
|
---|
4596 | static RTEXITCODE vbcppExtractQuotedString(PVBCPP pThis, PSCMSTREAM pStrmInput, PVBCPPSTRBUF pStrBuf,
|
---|
4597 | char chOpen, char chClose)
|
---|
4598 | {
|
---|
4599 | unsigned ch = ScmStreamGetCh(pStrmInput);
|
---|
4600 | Assert(ch == (unsigned)chOpen);
|
---|
4601 |
|
---|
4602 | RTEXITCODE rcExit = vbcppStrBufAppendCh(pStrBuf, chOpen);
|
---|
4603 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
4604 | return rcExit;
|
---|
4605 |
|
---|
4606 | for (;;)
|
---|
4607 | {
|
---|
4608 | ch = ScmStreamGetCh(pStrmInput);
|
---|
4609 | if (ch == '\\')
|
---|
4610 | {
|
---|
4611 | ch = ScmStreamGetCh(pStrmInput);
|
---|
4612 | if (ch == ~(unsigned)0)
|
---|
4613 | break;
|
---|
4614 | rcExit = vbcppStrBufAppendCh(pStrBuf, '\\');
|
---|
4615 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4616 | rcExit = vbcppStrBufAppendCh(pStrBuf, ch);
|
---|
4617 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
4618 | return rcExit;
|
---|
4619 | }
|
---|
4620 | else if (ch != ~(unsigned)0)
|
---|
4621 | {
|
---|
4622 | rcExit = vbcppStrBufAppendCh(pStrBuf, ch);
|
---|
4623 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
4624 | return rcExit;
|
---|
4625 | if (ch == (unsigned)chClose)
|
---|
4626 | return RTEXITCODE_SUCCESS;
|
---|
4627 | }
|
---|
4628 | else
|
---|
4629 | break;
|
---|
4630 | }
|
---|
4631 |
|
---|
4632 | return vbcppError(pThis, "File ended with an open character constant");
|
---|
4633 | }
|
---|
4634 |
|
---|
4635 |
|
---|
4636 | /**
|
---|
4637 | * Extracts a line from the stream, stripping it for comments and maybe
|
---|
4638 | * optimzing some of the whitespace.
|
---|
4639 | *
|
---|
4640 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
4641 | * @param pThis The C preprocessor instance.
|
---|
4642 | * @param pStrmInput The input stream.
|
---|
4643 | * @param pStrBuf Where to store the extracted line. Caller must
|
---|
4644 | * initialize this prior to the call an delete it
|
---|
4645 | * after use (even on failure).
|
---|
4646 | * @param poffComment Where to note down the position of the final
|
---|
4647 | * comment. Optional.
|
---|
4648 | */
|
---|
4649 | static RTEXITCODE vbcppExtractDirectiveLine(PVBCPP pThis, PSCMSTREAM pStrmInput, PVBCPPSTRBUF pStrBuf, size_t *poffComment)
|
---|
4650 | {
|
---|
4651 | size_t offComment = ~(size_t)0;
|
---|
4652 | unsigned ch;
|
---|
4653 | while ((ch = ScmStreamPeekCh(pStrmInput)) != ~(unsigned)0)
|
---|
4654 | {
|
---|
4655 | RTEXITCODE rcExit;
|
---|
4656 | if (ch == '/')
|
---|
4657 | {
|
---|
4658 | /* Comment? */
|
---|
4659 | unsigned ch2 = ScmStreamGetCh(pStrmInput); Assert(ch == ch2); NOREF(ch2);
|
---|
4660 | ch = ScmStreamPeekCh(pStrmInput);
|
---|
4661 | if (ch == '*')
|
---|
4662 | {
|
---|
4663 | offComment = ScmStreamTell(pStrmInput) - 1;
|
---|
4664 | rcExit = vbcppExtractSkipComment(pThis, pStrmInput);
|
---|
4665 | }
|
---|
4666 | else if (ch == '/')
|
---|
4667 | {
|
---|
4668 | offComment = ScmStreamTell(pStrmInput) - 1;
|
---|
4669 | rcExit = vbcppExtractSkipCommentLine(pThis, pStrmInput);
|
---|
4670 | }
|
---|
4671 | else
|
---|
4672 | rcExit = vbcppStrBufAppendCh(pStrBuf, '/');
|
---|
4673 | }
|
---|
4674 | else if (ch == '\'')
|
---|
4675 | {
|
---|
4676 | offComment = ~(size_t)0;
|
---|
4677 | rcExit = vbcppExtractQuotedString(pThis, pStrmInput, pStrBuf, '\'', '\'');
|
---|
4678 | }
|
---|
4679 | else if (ch == '"')
|
---|
4680 | {
|
---|
4681 | offComment = ~(size_t)0;
|
---|
4682 | rcExit = vbcppExtractQuotedString(pThis, pStrmInput, pStrBuf, '"', '"');
|
---|
4683 | }
|
---|
4684 | else if (ch == '\r' || ch == '\n')
|
---|
4685 | break; /* done */
|
---|
4686 | else if ( RT_C_IS_SPACE(ch)
|
---|
4687 | && ( RT_C_IS_SPACE(vbcppStrBufLastCh(pStrBuf))
|
---|
4688 | || vbcppStrBufLastCh(pStrBuf) == '\0') )
|
---|
4689 | {
|
---|
4690 | unsigned ch2 = ScmStreamGetCh(pStrmInput);
|
---|
4691 | Assert(ch == ch2); NOREF(ch2);
|
---|
4692 | rcExit = RTEXITCODE_SUCCESS;
|
---|
4693 | }
|
---|
4694 | else
|
---|
4695 | {
|
---|
4696 | unsigned ch2 = ScmStreamGetCh(pStrmInput); Assert(ch == ch2);
|
---|
4697 |
|
---|
4698 | /* Escaped newline? */
|
---|
4699 | if ( ch == '\\'
|
---|
4700 | && ( (ch2 = ScmStreamPeekCh(pStrmInput)) == '\r'
|
---|
4701 | || ch2 == '\n'))
|
---|
4702 | {
|
---|
4703 | ScmStreamSeekByLine(pStrmInput, ScmStreamTellLine(pStrmInput) + 1);
|
---|
4704 | rcExit = RTEXITCODE_SUCCESS;
|
---|
4705 | }
|
---|
4706 | else
|
---|
4707 | {
|
---|
4708 | offComment = ~(size_t)0;
|
---|
4709 | rcExit = vbcppStrBufAppendCh(pStrBuf, ch);
|
---|
4710 | }
|
---|
4711 | }
|
---|
4712 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
4713 | return rcExit;
|
---|
4714 | }
|
---|
4715 |
|
---|
4716 | if (poffComment)
|
---|
4717 | *poffComment = offComment;
|
---|
4718 | return RTEXITCODE_SUCCESS;
|
---|
4719 | }
|
---|
4720 |
|
---|
4721 |
|
---|
4722 | /**
|
---|
4723 | * Processes a abbreviated line number directive.
|
---|
4724 | *
|
---|
4725 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
4726 | * @param pThis The C preprocessor instance.
|
---|
4727 | * @param pStrmInput The input stream.
|
---|
4728 | * @param offStart The stream position where the directive
|
---|
4729 | * started (for pass thru).
|
---|
4730 | * @param enmKind The kind of directive we're processing.
|
---|
4731 | */
|
---|
4732 | static RTEXITCODE vbcppDirectiveIfOrElif(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart,
|
---|
4733 | VBCPPCONDKIND enmKind)
|
---|
4734 | {
|
---|
4735 | /*
|
---|
4736 | * Check for missing #if if #elif.
|
---|
4737 | */
|
---|
4738 | if ( enmKind == kVBCppCondKind_ElIf
|
---|
4739 | && !pThis->pCondStack )
|
---|
4740 | return vbcppError(pThis, "#elif without #if");
|
---|
4741 |
|
---|
4742 | /*
|
---|
4743 | * Extract the expression string.
|
---|
4744 | */
|
---|
4745 | const char *pchCondition = ScmStreamGetCur(pStrmInput);
|
---|
4746 | size_t offComment;
|
---|
4747 | VBCPPMACROEXP ExpCtx;
|
---|
4748 | #if 0
|
---|
4749 | ExpCtx.pMacroStack = NULL;
|
---|
4750 | #endif
|
---|
4751 | ExpCtx.pStrmInput = NULL;
|
---|
4752 | ExpCtx.papszArgs = NULL;
|
---|
4753 | ExpCtx.cArgs = 0;
|
---|
4754 | ExpCtx.cArgsAlloced = 0;
|
---|
4755 | vbcppStrBufInit(&ExpCtx.StrBuf, pThis);
|
---|
4756 | RTEXITCODE rcExit = vbcppExtractDirectiveLine(pThis, pStrmInput, &ExpCtx.StrBuf, &offComment);
|
---|
4757 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4758 | {
|
---|
4759 | if (RT_C_IS_SPACE(*pchCondition))
|
---|
4760 | pchCondition++;
|
---|
4761 | size_t const cchCondition = ScmStreamGetCur(pStrmInput) - pchCondition;
|
---|
4762 |
|
---|
4763 | /*
|
---|
4764 | * Expand known macros in it.
|
---|
4765 | */
|
---|
4766 | size_t cReplacements;
|
---|
4767 | size_t cDefinedUnknown;
|
---|
4768 | rcExit = vbcppMacroExpandReScan(pThis, &ExpCtx, kMacroReScanMode_Expression, &cReplacements, &cDefinedUnknown);
|
---|
4769 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4770 | {
|
---|
4771 | /*
|
---|
4772 | * Strip it and check that it's not empty.
|
---|
4773 | */
|
---|
4774 | char *pszExpr = ExpCtx.StrBuf.pszBuf;
|
---|
4775 | size_t cchExpr = ExpCtx.StrBuf.cchBuf;
|
---|
4776 | while (cchExpr > 0 && RT_C_IS_SPACE(*pszExpr))
|
---|
4777 | pszExpr++, cchExpr--;
|
---|
4778 |
|
---|
4779 | while (cchExpr > 0 && RT_C_IS_SPACE(pszExpr[cchExpr - 1]))
|
---|
4780 | {
|
---|
4781 | pszExpr[--cchExpr] = '\0';
|
---|
4782 | ExpCtx.StrBuf.cchBuf--;
|
---|
4783 | }
|
---|
4784 | if (cchExpr)
|
---|
4785 | {
|
---|
4786 | /*
|
---|
4787 | * Now, evalute the expression.
|
---|
4788 | */
|
---|
4789 | VBCPPEVAL enmResult;
|
---|
4790 | rcExit = vbcppExprEval(pThis, pszExpr, cchExpr, cReplacements, cDefinedUnknown, &enmResult);
|
---|
4791 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4792 | {
|
---|
4793 | /*
|
---|
4794 | * Take action.
|
---|
4795 | */
|
---|
4796 | if (enmKind != kVBCppCondKind_ElIf)
|
---|
4797 | rcExit = vbcppCondPush(pThis, pStrmInput, offComment, enmKind, enmResult,
|
---|
4798 | pchCondition, cchCondition);
|
---|
4799 | else
|
---|
4800 | {
|
---|
4801 | PVBCPPCOND pCond = pThis->pCondStack;
|
---|
4802 | if ( pCond->enmResult != kVBCppEval_Undecided
|
---|
4803 | && ( !pCond->pUp
|
---|
4804 | || pCond->pUp->enmStackResult == kVBCppEval_True))
|
---|
4805 | {
|
---|
4806 | Assert(enmResult == kVBCppEval_True || enmResult == kVBCppEval_False);
|
---|
4807 | if ( pCond->enmResult == kVBCppEval_False
|
---|
4808 | && enmResult == kVBCppEval_True
|
---|
4809 | && !pCond->fElIfDecided)
|
---|
4810 | {
|
---|
4811 | pCond->enmStackResult = kVBCppEval_True;
|
---|
4812 | pCond->fElIfDecided = true;
|
---|
4813 | }
|
---|
4814 | else
|
---|
4815 | pCond->enmStackResult = kVBCppEval_False;
|
---|
4816 | pThis->fIf0Mode = pCond->enmStackResult == kVBCppEval_False;
|
---|
4817 | }
|
---|
4818 | pCond->enmKind = kVBCppCondKind_ElIf;
|
---|
4819 | pCond->enmResult = enmResult;
|
---|
4820 | pCond->pchCond = pchCondition;
|
---|
4821 | pCond->cchCond = cchCondition;
|
---|
4822 |
|
---|
4823 | /*
|
---|
4824 | * Do #elif pass thru.
|
---|
4825 | */
|
---|
4826 | if ( !pThis->fIf0Mode
|
---|
4827 | && pCond->enmResult == kVBCppEval_Undecided)
|
---|
4828 | {
|
---|
4829 | ssize_t cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*selif", pCond->iKeepLevel - 1, "");
|
---|
4830 | if (cch > 0)
|
---|
4831 | rcExit = vbcppOutputComment(pThis, pStrmInput, offStart, cch, 1);
|
---|
4832 | else
|
---|
4833 | rcExit = vbcppError(pThis, "Output error %Rrc", (int)cch);
|
---|
4834 | }
|
---|
4835 | else
|
---|
4836 | pThis->fJustDroppedLine = true;
|
---|
4837 | }
|
---|
4838 | }
|
---|
4839 | }
|
---|
4840 | else
|
---|
4841 | rcExit = vbcppError(pThis, "Empty #if expression");
|
---|
4842 | }
|
---|
4843 | }
|
---|
4844 | vbcppMacroExpandCleanup(&ExpCtx);
|
---|
4845 | return rcExit;
|
---|
4846 | }
|
---|
4847 |
|
---|
4848 |
|
---|
4849 | /**
|
---|
4850 | * Processes a abbreviated line number directive.
|
---|
4851 | *
|
---|
4852 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
4853 | * @param pThis The C preprocessor instance.
|
---|
4854 | * @param pStrmInput The input stream.
|
---|
4855 | * @param offStart The stream position where the directive
|
---|
4856 | * started (for pass thru).
|
---|
4857 | */
|
---|
4858 | static RTEXITCODE vbcppDirectiveIfDef(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart)
|
---|
4859 | {
|
---|
4860 | /*
|
---|
4861 | * Parse it.
|
---|
4862 | */
|
---|
4863 | RTEXITCODE rcExit = vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
4864 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4865 | {
|
---|
4866 | size_t cchDefine;
|
---|
4867 | const char *pchDefine = ScmStreamCGetWord(pStrmInput, &cchDefine);
|
---|
4868 | if (pchDefine)
|
---|
4869 | {
|
---|
4870 | rcExit = vbcppProcessSkipWhiteEscapedEolAndCommentsCheckEol(pThis, pStrmInput);
|
---|
4871 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4872 | {
|
---|
4873 | /*
|
---|
4874 | * Evaluate it.
|
---|
4875 | */
|
---|
4876 | VBCPPEVAL enmEval;
|
---|
4877 | if (vbcppMacroExists(pThis, pchDefine, cchDefine))
|
---|
4878 | enmEval = kVBCppEval_True;
|
---|
4879 | else if ( !pThis->fUndecidedConditionals
|
---|
4880 | || RTStrSpaceGetN(&pThis->UndefStrSpace, pchDefine, cchDefine) != NULL)
|
---|
4881 | enmEval = kVBCppEval_False;
|
---|
4882 | else
|
---|
4883 | enmEval = kVBCppEval_Undecided;
|
---|
4884 | rcExit = vbcppCondPush(pThis, pStrmInput, offStart, kVBCppCondKind_IfDef, enmEval,
|
---|
4885 | pchDefine, cchDefine);
|
---|
4886 | }
|
---|
4887 | }
|
---|
4888 | else
|
---|
4889 | rcExit = vbcppError(pThis, "Malformed #ifdef");
|
---|
4890 | }
|
---|
4891 | return rcExit;
|
---|
4892 | }
|
---|
4893 |
|
---|
4894 |
|
---|
4895 | /**
|
---|
4896 | * Processes a abbreviated line number directive.
|
---|
4897 | *
|
---|
4898 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
4899 | * @param pThis The C preprocessor instance.
|
---|
4900 | * @param pStrmInput The input stream.
|
---|
4901 | * @param offStart The stream position where the directive
|
---|
4902 | * started (for pass thru).
|
---|
4903 | */
|
---|
4904 | static RTEXITCODE vbcppDirectiveIfNDef(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart)
|
---|
4905 | {
|
---|
4906 | /*
|
---|
4907 | * Parse it.
|
---|
4908 | */
|
---|
4909 | RTEXITCODE rcExit = vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
4910 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4911 | {
|
---|
4912 | size_t cchDefine;
|
---|
4913 | const char *pchDefine = ScmStreamCGetWord(pStrmInput, &cchDefine);
|
---|
4914 | if (pchDefine)
|
---|
4915 | {
|
---|
4916 | rcExit = vbcppProcessSkipWhiteEscapedEolAndCommentsCheckEol(pThis, pStrmInput);
|
---|
4917 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4918 | {
|
---|
4919 | /*
|
---|
4920 | * Evaluate it.
|
---|
4921 | */
|
---|
4922 | VBCPPEVAL enmEval;
|
---|
4923 | if (vbcppMacroExists(pThis, pchDefine, cchDefine))
|
---|
4924 | enmEval = kVBCppEval_False;
|
---|
4925 | else if ( !pThis->fUndecidedConditionals
|
---|
4926 | || RTStrSpaceGetN(&pThis->UndefStrSpace, pchDefine, cchDefine) != NULL)
|
---|
4927 | enmEval = kVBCppEval_True;
|
---|
4928 | else
|
---|
4929 | enmEval = kVBCppEval_Undecided;
|
---|
4930 | rcExit = vbcppCondPush(pThis, pStrmInput, offStart, kVBCppCondKind_IfNDef, enmEval,
|
---|
4931 | pchDefine, cchDefine);
|
---|
4932 | }
|
---|
4933 | }
|
---|
4934 | else
|
---|
4935 | rcExit = vbcppError(pThis, "Malformed #ifndef");
|
---|
4936 | }
|
---|
4937 | return rcExit;
|
---|
4938 | }
|
---|
4939 |
|
---|
4940 |
|
---|
4941 | /**
|
---|
4942 | * Processes a abbreviated line number directive.
|
---|
4943 | *
|
---|
4944 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
4945 | * @param pThis The C preprocessor instance.
|
---|
4946 | * @param pStrmInput The input stream.
|
---|
4947 | * @param offStart The stream position where the directive
|
---|
4948 | * started (for pass thru).
|
---|
4949 | */
|
---|
4950 | static RTEXITCODE vbcppDirectiveElse(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart)
|
---|
4951 | {
|
---|
4952 | /*
|
---|
4953 | * Nothing to parse, just comment positions to find and note down.
|
---|
4954 | */
|
---|
4955 | offStart = vbcppProcessSkipWhite(pStrmInput);
|
---|
4956 | RTEXITCODE rcExit = vbcppProcessSkipWhiteEscapedEolAndCommentsCheckEol(pThis, pStrmInput);
|
---|
4957 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
4958 | {
|
---|
4959 | /*
|
---|
4960 | * Execute.
|
---|
4961 | */
|
---|
4962 | PVBCPPCOND pCond = pThis->pCondStack;
|
---|
4963 | if (pCond)
|
---|
4964 | {
|
---|
4965 | if (!pCond->fSeenElse)
|
---|
4966 | {
|
---|
4967 | pCond->fSeenElse = true;
|
---|
4968 | if ( pCond->enmResult != kVBCppEval_Undecided
|
---|
4969 | && ( !pCond->pUp
|
---|
4970 | || pCond->pUp->enmStackResult == kVBCppEval_True))
|
---|
4971 | {
|
---|
4972 | if ( pCond->enmResult == kVBCppEval_True
|
---|
4973 | || pCond->fElIfDecided)
|
---|
4974 |
|
---|
4975 | pCond->enmStackResult = kVBCppEval_False;
|
---|
4976 | else
|
---|
4977 | pCond->enmStackResult = kVBCppEval_True;
|
---|
4978 | pThis->fIf0Mode = pCond->enmStackResult == kVBCppEval_False;
|
---|
4979 | }
|
---|
4980 |
|
---|
4981 | /*
|
---|
4982 | * Do pass thru.
|
---|
4983 | */
|
---|
4984 | if ( !pThis->fIf0Mode
|
---|
4985 | && pCond->enmResult == kVBCppEval_Undecided)
|
---|
4986 | {
|
---|
4987 | ssize_t cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*selse", pCond->iKeepLevel - 1, "");
|
---|
4988 | if (cch > 0)
|
---|
4989 | rcExit = vbcppOutputComment(pThis, pStrmInput, offStart, cch, 2);
|
---|
4990 | else
|
---|
4991 | rcExit = vbcppError(pThis, "Output error %Rrc", (int)cch);
|
---|
4992 | }
|
---|
4993 | else
|
---|
4994 | pThis->fJustDroppedLine = true;
|
---|
4995 | }
|
---|
4996 | else
|
---|
4997 | rcExit = vbcppError(pThis, "Double #else or/and missing #endif");
|
---|
4998 | }
|
---|
4999 | else
|
---|
5000 | rcExit = vbcppError(pThis, "#else without #if");
|
---|
5001 | }
|
---|
5002 | return rcExit;
|
---|
5003 | }
|
---|
5004 |
|
---|
5005 |
|
---|
5006 | /**
|
---|
5007 | * Processes a abbreviated line number directive.
|
---|
5008 | *
|
---|
5009 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
5010 | * @param pThis The C preprocessor instance.
|
---|
5011 | * @param pStrmInput The input stream.
|
---|
5012 | * @param offStart The stream position where the directive
|
---|
5013 | * started (for pass thru).
|
---|
5014 | */
|
---|
5015 | static RTEXITCODE vbcppDirectiveEndif(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart)
|
---|
5016 | {
|
---|
5017 | /*
|
---|
5018 | * Nothing to parse, just comment positions to find and note down.
|
---|
5019 | */
|
---|
5020 | offStart = vbcppProcessSkipWhite(pStrmInput);
|
---|
5021 | RTEXITCODE rcExit = vbcppProcessSkipWhiteEscapedEolAndCommentsCheckEol(pThis, pStrmInput);
|
---|
5022 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
5023 | {
|
---|
5024 | /*
|
---|
5025 | * Execute.
|
---|
5026 | */
|
---|
5027 | PVBCPPCOND pCond = pThis->pCondStack;
|
---|
5028 | if (pCond)
|
---|
5029 | {
|
---|
5030 | pThis->pCondStack = pCond->pUp;
|
---|
5031 | pThis->fIf0Mode = pCond->pUp && pCond->pUp->enmStackResult == kVBCppEval_False;
|
---|
5032 |
|
---|
5033 | /*
|
---|
5034 | * Do pass thru.
|
---|
5035 | */
|
---|
5036 | if ( !pThis->fIf0Mode
|
---|
5037 | && pCond->enmResult == kVBCppEval_Undecided)
|
---|
5038 | {
|
---|
5039 | ssize_t cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*sendif", pCond->iKeepLevel - 1, "");
|
---|
5040 | if (cch > 0)
|
---|
5041 | rcExit = vbcppOutputComment(pThis, pStrmInput, offStart, cch, 1);
|
---|
5042 | else
|
---|
5043 | rcExit = vbcppError(pThis, "Output error %Rrc", (int)cch);
|
---|
5044 | }
|
---|
5045 | else
|
---|
5046 | pThis->fJustDroppedLine = true;
|
---|
5047 | }
|
---|
5048 | else
|
---|
5049 | rcExit = vbcppError(pThis, "#endif without #if");
|
---|
5050 | }
|
---|
5051 | return rcExit;
|
---|
5052 | }
|
---|
5053 |
|
---|
5054 |
|
---|
5055 |
|
---|
5056 |
|
---|
5057 |
|
---|
5058 | /*
|
---|
5059 | *
|
---|
5060 | *
|
---|
5061 | * Misc Directives
|
---|
5062 | * Misc Directives
|
---|
5063 | * Misc Directives
|
---|
5064 | * Misc Directives
|
---|
5065 | *
|
---|
5066 | *
|
---|
5067 | */
|
---|
5068 |
|
---|
5069 |
|
---|
5070 | /**
|
---|
5071 | * Adds an include directory.
|
---|
5072 | *
|
---|
5073 | * @returns Program exit code, with error message on failure.
|
---|
5074 | * @param pThis The C preprocessor instance.
|
---|
5075 | * @param pszDir The directory to add.
|
---|
5076 | */
|
---|
5077 | static RTEXITCODE vbcppAddInclude(PVBCPP pThis, const char *pszDir)
|
---|
5078 | {
|
---|
5079 | uint32_t cIncludes = pThis->cIncludes;
|
---|
5080 | if (cIncludes >= _64K)
|
---|
5081 | return vbcppError(pThis, "Too many include directories");
|
---|
5082 |
|
---|
5083 | void *pv = RTMemRealloc(pThis->papszIncludes, (cIncludes + 1) * sizeof(char **));
|
---|
5084 | if (!pv)
|
---|
5085 | return vbcppError(pThis, "No memory for include directories");
|
---|
5086 | pThis->papszIncludes = (char **)pv;
|
---|
5087 |
|
---|
5088 | int rc = RTStrDupEx(&pThis->papszIncludes[cIncludes], pszDir);
|
---|
5089 | if (RT_FAILURE(rc))
|
---|
5090 | return vbcppError(pThis, "No string memory for include directories");
|
---|
5091 |
|
---|
5092 | pThis->cIncludes = cIncludes + 1;
|
---|
5093 | return RTEXITCODE_SUCCESS;
|
---|
5094 | }
|
---|
5095 |
|
---|
5096 |
|
---|
5097 | /**
|
---|
5098 | * Processes a abbreviated line number directive.
|
---|
5099 | *
|
---|
5100 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
5101 | * @param pThis The C preprocessor instance.
|
---|
5102 | * @param pStrmInput The input stream.
|
---|
5103 | * @param offStart The stream position where the directive
|
---|
5104 | * started (for pass thru).
|
---|
5105 | */
|
---|
5106 | static RTEXITCODE vbcppDirectiveInclude(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart)
|
---|
5107 | {
|
---|
5108 | RT_NOREF_PV(offStart);
|
---|
5109 |
|
---|
5110 | /*
|
---|
5111 | * Parse it.
|
---|
5112 | */
|
---|
5113 | RTEXITCODE rcExit = vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
5114 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
5115 | {
|
---|
5116 | size_t cchFileSpec = 0;
|
---|
5117 | const char *pchFileSpec = NULL;
|
---|
5118 | size_t cchFilename = 0;
|
---|
5119 | const char *pchFilename = NULL;
|
---|
5120 |
|
---|
5121 | unsigned ch = ScmStreamPeekCh(pStrmInput);
|
---|
5122 | unsigned chType = ch;
|
---|
5123 | if (ch == '"' || ch == '<')
|
---|
5124 | {
|
---|
5125 | ScmStreamGetCh(pStrmInput);
|
---|
5126 | pchFileSpec = pchFilename = ScmStreamGetCur(pStrmInput);
|
---|
5127 | unsigned chEnd = chType == '<' ? '>' : '"';
|
---|
5128 | while ( (ch = ScmStreamGetCh(pStrmInput)) != ~(unsigned)0
|
---|
5129 | && ch != chEnd)
|
---|
5130 | {
|
---|
5131 | if (ch == '\r' || ch == '\n')
|
---|
5132 | {
|
---|
5133 | rcExit = vbcppError(pThis, "Multi-line include file specfications are not supported");
|
---|
5134 | break;
|
---|
5135 | }
|
---|
5136 | }
|
---|
5137 |
|
---|
5138 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
5139 | {
|
---|
5140 | if (ch != ~(unsigned)0)
|
---|
5141 | cchFileSpec = cchFilename = ScmStreamGetCur(pStrmInput) - pchFilename - 1;
|
---|
5142 | else
|
---|
5143 | rcExit = vbcppError(pThis, "Expected '%c'", chType);
|
---|
5144 | }
|
---|
5145 | }
|
---|
5146 | else if (vbcppIsCIdentifierLeadChar(ch))
|
---|
5147 | {
|
---|
5148 | //pchFileSpec = ScmStreamCGetWord(pStrmInput, &cchFileSpec);
|
---|
5149 | rcExit = vbcppError(pThis, "Including via a define is not implemented yet");
|
---|
5150 | }
|
---|
5151 | else
|
---|
5152 | rcExit = vbcppError(pThis, "Malformed include directive");
|
---|
5153 |
|
---|
5154 | /*
|
---|
5155 | * Take down the location of the next non-white space, in case we need
|
---|
5156 | * to pass thru the directive further down. Then skip to the end of the
|
---|
5157 | * line.
|
---|
5158 | */
|
---|
5159 | size_t const offIncEnd = vbcppProcessSkipWhite(pStrmInput);
|
---|
5160 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
5161 | rcExit = vbcppProcessSkipWhiteEscapedEolAndCommentsCheckEol(pThis, pStrmInput);
|
---|
5162 |
|
---|
5163 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
5164 | {
|
---|
5165 | /*
|
---|
5166 | * Execute it.
|
---|
5167 | */
|
---|
5168 | if (pThis->enmIncludeAction == kVBCppIncludeAction_Include)
|
---|
5169 | {
|
---|
5170 | /** @todo Search for the include file and push it onto the input stack.
|
---|
5171 | * Not difficult, just unnecessary rigth now. */
|
---|
5172 | rcExit = vbcppError(pThis, "Sorry, includes are not yet implemented");
|
---|
5173 | }
|
---|
5174 | else if (pThis->enmIncludeAction == kVBCppIncludeAction_PassThru)
|
---|
5175 | {
|
---|
5176 | /* Pretty print the passthru. */
|
---|
5177 | unsigned cchIndent = pThis->pCondStack ? pThis->pCondStack->iKeepLevel : 0;
|
---|
5178 | ssize_t cch;
|
---|
5179 | if (chType == '<')
|
---|
5180 | cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*sinclude <%.*s>",
|
---|
5181 | cchIndent, "", cchFileSpec, pchFileSpec);
|
---|
5182 | else if (chType == '"')
|
---|
5183 | cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*sinclude \"%.*s\"",
|
---|
5184 | cchIndent, "", cchFileSpec, pchFileSpec);
|
---|
5185 | else
|
---|
5186 | cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*sinclude %.*s",
|
---|
5187 | cchIndent, "", cchFileSpec, pchFileSpec);
|
---|
5188 | if (cch > 0)
|
---|
5189 | rcExit = vbcppOutputComment(pThis, pStrmInput, offIncEnd, cch, 1);
|
---|
5190 | else
|
---|
5191 | rcExit = vbcppError(pThis, "Output error %Rrc", (int)cch);
|
---|
5192 |
|
---|
5193 | }
|
---|
5194 | else
|
---|
5195 | {
|
---|
5196 | Assert(pThis->enmIncludeAction == kVBCppIncludeAction_Drop);
|
---|
5197 | pThis->fJustDroppedLine = true;
|
---|
5198 | }
|
---|
5199 | }
|
---|
5200 | }
|
---|
5201 | return rcExit;
|
---|
5202 | }
|
---|
5203 |
|
---|
5204 |
|
---|
5205 | /**
|
---|
5206 | * Processes a abbreviated line number directive.
|
---|
5207 | *
|
---|
5208 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
5209 | * @param pThis The C preprocessor instance.
|
---|
5210 | * @param pStrmInput The input stream.
|
---|
5211 | * @param offStart The stream position where the directive
|
---|
5212 | * started (for pass thru).
|
---|
5213 | */
|
---|
5214 | static RTEXITCODE vbcppDirectivePragma(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart)
|
---|
5215 | {
|
---|
5216 | RT_NOREF_PV(offStart);
|
---|
5217 |
|
---|
5218 | /*
|
---|
5219 | * Parse out the first word.
|
---|
5220 | */
|
---|
5221 | RTEXITCODE rcExit = vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
5222 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
5223 | {
|
---|
5224 | size_t cchPragma;
|
---|
5225 | const char *pchPragma = ScmStreamCGetWord(pStrmInput, &cchPragma);
|
---|
5226 | if (pchPragma)
|
---|
5227 | {
|
---|
5228 | size_t const off2nd = vbcppProcessSkipWhite(pStrmInput);
|
---|
5229 | size_t offComment;
|
---|
5230 | rcExit = vbcppInputSkipToEndOfDirectiveLine(pThis, pStrmInput, &offComment);
|
---|
5231 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
5232 | {
|
---|
5233 | /*
|
---|
5234 | * What to do about this
|
---|
5235 | */
|
---|
5236 | bool fPassThru = false;
|
---|
5237 | if ( cchPragma == 1
|
---|
5238 | && *pchPragma == 'D')
|
---|
5239 | fPassThru = pThis->fPassThruPragmaD;
|
---|
5240 | else if ( cchPragma == 3
|
---|
5241 | && !strncmp(pchPragma, "STD", 3))
|
---|
5242 | fPassThru = pThis->fPassThruPragmaSTD;
|
---|
5243 | else
|
---|
5244 | fPassThru = pThis->fPassThruPragmaOther;
|
---|
5245 | if (fPassThru)
|
---|
5246 | {
|
---|
5247 | unsigned cchIndent = pThis->pCondStack ? pThis->pCondStack->iKeepLevel : 0;
|
---|
5248 | ssize_t cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*spragma %.*s",
|
---|
5249 | cchIndent, "", cchPragma, pchPragma);
|
---|
5250 | if (cch > 0)
|
---|
5251 | rcExit = vbcppOutputComment(pThis, pStrmInput, off2nd, cch, 1);
|
---|
5252 | else
|
---|
5253 | rcExit = vbcppError(pThis, "output error");
|
---|
5254 | }
|
---|
5255 | else
|
---|
5256 | pThis->fJustDroppedLine = true;
|
---|
5257 | }
|
---|
5258 | }
|
---|
5259 | else
|
---|
5260 | rcExit = vbcppError(pThis, "Malformed #pragma");
|
---|
5261 | }
|
---|
5262 |
|
---|
5263 | return rcExit;
|
---|
5264 | }
|
---|
5265 |
|
---|
5266 |
|
---|
5267 | /**
|
---|
5268 | * Processes an error directive.
|
---|
5269 | *
|
---|
5270 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
5271 | * @param pThis The C preprocessor instance.
|
---|
5272 | * @param pStrmInput The input stream.
|
---|
5273 | * @param offStart The stream position where the directive
|
---|
5274 | * started (for pass thru).
|
---|
5275 | */
|
---|
5276 | static RTEXITCODE vbcppDirectiveError(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart)
|
---|
5277 | {
|
---|
5278 | RT_NOREF(offStart);
|
---|
5279 |
|
---|
5280 | /*
|
---|
5281 | * Parse out the message.
|
---|
5282 | */
|
---|
5283 | size_t const off1st = vbcppProcessSkipWhite(pStrmInput);
|
---|
5284 | size_t offComment;
|
---|
5285 | RTEXITCODE rcExit = vbcppInputSkipToEndOfDirectiveLine(pThis, pStrmInput, &offComment);
|
---|
5286 | if (rcExit == RTEXITCODE_SUCCESS)
|
---|
5287 | {
|
---|
5288 | /*
|
---|
5289 | * What to do about this
|
---|
5290 | */
|
---|
5291 | if (pThis->fPassThruError)
|
---|
5292 | {
|
---|
5293 | unsigned cchIndent = pThis->pCondStack ? pThis->pCondStack->iKeepLevel : 0;
|
---|
5294 | ssize_t cch = ScmStreamPrintf(&pThis->StrmOutput, "#%*serror", cchIndent, "");
|
---|
5295 | if (cch > 0)
|
---|
5296 | rcExit = vbcppOutputComment(pThis, pStrmInput, off1st, cch, 1);
|
---|
5297 | else
|
---|
5298 | rcExit = vbcppError(pThis, "output error");
|
---|
5299 | return RTEXITCODE_SUCCESS;
|
---|
5300 | }
|
---|
5301 | return vbcppError(pThis, "Hit an #error");
|
---|
5302 | }
|
---|
5303 | RT_NOREF_PV(offStart);
|
---|
5304 | vbcppError(pThis, "Malformed #error");
|
---|
5305 | return vbcppError(pThis, "Hit an #error");
|
---|
5306 | }
|
---|
5307 |
|
---|
5308 |
|
---|
5309 | /**
|
---|
5310 | * Processes a abbreviated line number directive.
|
---|
5311 | *
|
---|
5312 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
5313 | * @param pThis The C preprocessor instance.
|
---|
5314 | * @param pStrmInput The input stream.
|
---|
5315 | * @param offStart The stream position where the directive
|
---|
5316 | * started (for pass thru).
|
---|
5317 | */
|
---|
5318 | static RTEXITCODE vbcppDirectiveLineNo(PVBCPP pThis, PSCMSTREAM pStrmInput, size_t offStart)
|
---|
5319 | {
|
---|
5320 | RT_NOREF_PV(offStart);
|
---|
5321 | RT_NOREF_PV(pStrmInput);
|
---|
5322 | return vbcppError(pThis, "Not implemented: %s", __FUNCTION__);
|
---|
5323 | }
|
---|
5324 |
|
---|
5325 |
|
---|
5326 | /**
|
---|
5327 | * Processes a abbreviated line number directive.
|
---|
5328 | *
|
---|
5329 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
5330 | * @param pThis The C preprocessor instance.
|
---|
5331 | * @param pStrmInput The input stream.
|
---|
5332 | */
|
---|
5333 | static RTEXITCODE vbcppDirectiveLineNoShort(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
5334 | {
|
---|
5335 | RT_NOREF_PV(pStrmInput);
|
---|
5336 | return vbcppError(pThis, "Not implemented: %s", __FUNCTION__);
|
---|
5337 | }
|
---|
5338 |
|
---|
5339 |
|
---|
5340 | /**
|
---|
5341 | * Handles a preprocessor directive.
|
---|
5342 | *
|
---|
5343 | * @returns RTEXITCODE_SUCCESS or RTEXITCODE_FAILURE+msg.
|
---|
5344 | * @param pThis The C preprocessor instance.
|
---|
5345 | * @param pStrmInput The input stream.
|
---|
5346 | */
|
---|
5347 | static RTEXITCODE vbcppProcessDirective(PVBCPP pThis, PSCMSTREAM pStrmInput)
|
---|
5348 | {
|
---|
5349 | /*
|
---|
5350 | * Get the directive and do a string switch on it.
|
---|
5351 | */
|
---|
5352 | RTEXITCODE rcExit = vbcppProcessSkipWhiteEscapedEolAndComments(pThis, pStrmInput);
|
---|
5353 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
5354 | return rcExit;
|
---|
5355 | size_t cchDirective;
|
---|
5356 | const char *pchDirective = ScmStreamCGetWord(pStrmInput, &cchDirective);
|
---|
5357 | if (pchDirective)
|
---|
5358 | {
|
---|
5359 | size_t const offStart = ScmStreamTell(pStrmInput);
|
---|
5360 | #define IS_DIRECTIVE(a_sz) ( sizeof(a_sz) - 1 == cchDirective && memcmp(pchDirective, a_sz, sizeof(a_sz) - 1) == 0)
|
---|
5361 | if (IS_DIRECTIVE("if"))
|
---|
5362 | rcExit = vbcppDirectiveIfOrElif(pThis, pStrmInput, offStart, kVBCppCondKind_If);
|
---|
5363 | else if (IS_DIRECTIVE("elif"))
|
---|
5364 | rcExit = vbcppDirectiveIfOrElif(pThis, pStrmInput, offStart, kVBCppCondKind_ElIf);
|
---|
5365 | else if (IS_DIRECTIVE("ifdef"))
|
---|
5366 | rcExit = vbcppDirectiveIfDef(pThis, pStrmInput, offStart);
|
---|
5367 | else if (IS_DIRECTIVE("ifndef"))
|
---|
5368 | rcExit = vbcppDirectiveIfNDef(pThis, pStrmInput, offStart);
|
---|
5369 | else if (IS_DIRECTIVE("else"))
|
---|
5370 | rcExit = vbcppDirectiveElse(pThis, pStrmInput, offStart);
|
---|
5371 | else if (IS_DIRECTIVE("endif"))
|
---|
5372 | rcExit = vbcppDirectiveEndif(pThis, pStrmInput, offStart);
|
---|
5373 | else if (!pThis->fIf0Mode)
|
---|
5374 | {
|
---|
5375 | if (IS_DIRECTIVE("include"))
|
---|
5376 | rcExit = vbcppDirectiveInclude(pThis, pStrmInput, offStart);
|
---|
5377 | else if (IS_DIRECTIVE("define"))
|
---|
5378 | rcExit = vbcppDirectiveDefine(pThis, pStrmInput, offStart);
|
---|
5379 | else if (IS_DIRECTIVE("undef"))
|
---|
5380 | rcExit = vbcppDirectiveUndef(pThis, pStrmInput, offStart);
|
---|
5381 | else if (IS_DIRECTIVE("pragma"))
|
---|
5382 | rcExit = vbcppDirectivePragma(pThis, pStrmInput, offStart);
|
---|
5383 | else if (IS_DIRECTIVE("error"))
|
---|
5384 | rcExit = vbcppDirectiveError(pThis, pStrmInput, offStart);
|
---|
5385 | else if (IS_DIRECTIVE("line"))
|
---|
5386 | rcExit = vbcppDirectiveLineNo(pThis, pStrmInput, offStart);
|
---|
5387 | else
|
---|
5388 | rcExit = vbcppError(pThis, "Unknown preprocessor directive '#%.*s'", cchDirective, pchDirective);
|
---|
5389 | }
|
---|
5390 | #undef IS_DIRECTIVE
|
---|
5391 | }
|
---|
5392 | else if (!pThis->fIf0Mode)
|
---|
5393 | {
|
---|
5394 | /* Could it be a # <num> "file" directive? */
|
---|
5395 | unsigned ch = ScmStreamPeekCh(pStrmInput);
|
---|
5396 | if (RT_C_IS_DIGIT(ch))
|
---|
5397 | rcExit = vbcppDirectiveLineNoShort(pThis, pStrmInput);
|
---|
5398 | else
|
---|
5399 | rcExit = vbcppError(pThis, "Malformed preprocessor directive");
|
---|
5400 | }
|
---|
5401 | return rcExit;
|
---|
5402 | }
|
---|
5403 |
|
---|
5404 |
|
---|
5405 | /*
|
---|
5406 | *
|
---|
5407 | *
|
---|
5408 | * M a i n b o d y.
|
---|
5409 | * M a i n b o d y.
|
---|
5410 | * M a i n b o d y.
|
---|
5411 | * M a i n b o d y.
|
---|
5412 | * M a i n b o d y.
|
---|
5413 | *
|
---|
5414 | *
|
---|
5415 | */
|
---|
5416 |
|
---|
5417 |
|
---|
5418 | /**
|
---|
5419 | * Does the actually preprocessing of the input file.
|
---|
5420 | *
|
---|
5421 | * @returns Exit code.
|
---|
5422 | * @param pThis The C preprocessor instance.
|
---|
5423 | */
|
---|
5424 | static RTEXITCODE vbcppPreprocess(PVBCPP pThis)
|
---|
5425 | {
|
---|
5426 | RTEXITCODE rcExit = RTEXITCODE_SUCCESS;
|
---|
5427 |
|
---|
5428 | /*
|
---|
5429 | * Parse.
|
---|
5430 | */
|
---|
5431 | while (pThis->pInputStack)
|
---|
5432 | {
|
---|
5433 | pThis->fMaybePreprocessorLine = true;
|
---|
5434 |
|
---|
5435 | PSCMSTREAM pStrmInput = &pThis->pInputStack->StrmInput;
|
---|
5436 | unsigned ch;
|
---|
5437 | while ((ch = ScmStreamGetCh(pStrmInput)) != ~(unsigned)0)
|
---|
5438 | {
|
---|
5439 | if (ch == '/')
|
---|
5440 | {
|
---|
5441 | ch = ScmStreamPeekCh(pStrmInput);
|
---|
5442 | if (ch == '*')
|
---|
5443 | rcExit = vbcppProcessMultiLineComment(pThis, pStrmInput);
|
---|
5444 | else if (ch == '/')
|
---|
5445 | rcExit = vbcppProcessOneLineComment(pThis, pStrmInput);
|
---|
5446 | else
|
---|
5447 | {
|
---|
5448 | pThis->fMaybePreprocessorLine = false;
|
---|
5449 | if (!pThis->fIf0Mode)
|
---|
5450 | rcExit = vbcppOutputCh(pThis, '/');
|
---|
5451 | }
|
---|
5452 | }
|
---|
5453 | else if (ch == '#' && pThis->fMaybePreprocessorLine)
|
---|
5454 | {
|
---|
5455 | rcExit = vbcppProcessDirective(pThis, pStrmInput);
|
---|
5456 | pStrmInput = &pThis->pInputStack->StrmInput;
|
---|
5457 | }
|
---|
5458 | else if (ch == '\r' || ch == '\n')
|
---|
5459 | {
|
---|
5460 | if ( ( !pThis->fIf0Mode
|
---|
5461 | && !pThis->fJustDroppedLine)
|
---|
5462 | || !pThis->fRemoveDroppedLines
|
---|
5463 | || !ScmStreamIsAtStartOfLine(&pThis->StrmOutput))
|
---|
5464 | rcExit = vbcppOutputCh(pThis, ch);
|
---|
5465 | pThis->fJustDroppedLine = false;
|
---|
5466 | pThis->fMaybePreprocessorLine = true;
|
---|
5467 | }
|
---|
5468 | else if (RT_C_IS_SPACE(ch))
|
---|
5469 | {
|
---|
5470 | if (!pThis->fIf0Mode)
|
---|
5471 | rcExit = vbcppOutputCh(pThis, ch);
|
---|
5472 | }
|
---|
5473 | else
|
---|
5474 | {
|
---|
5475 | pThis->fMaybePreprocessorLine = false;
|
---|
5476 | if (!pThis->fIf0Mode)
|
---|
5477 | {
|
---|
5478 | if (ch == '"')
|
---|
5479 | rcExit = vbcppProcessStringLitteral(pThis, pStrmInput);
|
---|
5480 | else if (ch == '\'')
|
---|
5481 | rcExit = vbcppProcessCharacterConstant(pThis, pStrmInput);
|
---|
5482 | else if (vbcppIsCIdentifierLeadChar(ch))
|
---|
5483 | rcExit = vbcppProcessIdentifier(pThis, pStrmInput);
|
---|
5484 | else if (RT_C_IS_DIGIT(ch))
|
---|
5485 | rcExit = vbcppProcessNumber(pThis, pStrmInput, ch);
|
---|
5486 | else
|
---|
5487 | rcExit = vbcppOutputCh(pThis, ch);
|
---|
5488 | }
|
---|
5489 | }
|
---|
5490 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
5491 | break;
|
---|
5492 | }
|
---|
5493 |
|
---|
5494 | /*
|
---|
5495 | * Check for errors.
|
---|
5496 | */
|
---|
5497 | if (rcExit != RTEXITCODE_SUCCESS)
|
---|
5498 | break;
|
---|
5499 |
|
---|
5500 | /*
|
---|
5501 | * Pop the input stack.
|
---|
5502 | */
|
---|
5503 | PVBCPPINPUT pPopped = pThis->pInputStack;
|
---|
5504 | pThis->pInputStack = pPopped->pUp;
|
---|
5505 | RTMemFree(pPopped);
|
---|
5506 | }
|
---|
5507 |
|
---|
5508 | return rcExit;
|
---|
5509 | }
|
---|
5510 |
|
---|
5511 |
|
---|
5512 | /**
|
---|
5513 | * Opens the input and output streams.
|
---|
5514 | *
|
---|
5515 | * @returns Exit code.
|
---|
5516 | * @param pThis The C preprocessor instance.
|
---|
5517 | */
|
---|
5518 | static RTEXITCODE vbcppOpenStreams(PVBCPP pThis)
|
---|
5519 | {
|
---|
5520 | const char * const pszInput = pThis->pszInput ? pThis->pszInput : "stdin";
|
---|
5521 | size_t const cchName = strlen(pszInput);
|
---|
5522 | PVBCPPINPUT const pInput = (PVBCPPINPUT)RTMemAlloc(RT_UOFFSETOF_DYN(VBCPPINPUT, szName[cchName + 1]));
|
---|
5523 | if (!pInput)
|
---|
5524 | return vbcppError(pThis, "out of memory");
|
---|
5525 | pInput->pUp = pThis->pInputStack;
|
---|
5526 | pInput->pszSpecified = pInput->szName;
|
---|
5527 | memcpy(pInput->szName, pszInput, cchName + 1);
|
---|
5528 | pThis->pInputStack = pInput;
|
---|
5529 | int rc;
|
---|
5530 | if (pThis->pszInput)
|
---|
5531 | {
|
---|
5532 | rc = ScmStreamInitForReading(&pInput->StrmInput, pThis->pszInput);
|
---|
5533 | if (RT_FAILURE(rc))
|
---|
5534 | return vbcppError(pThis, "ScmStreamInitForReading returned %Rrc when opening and reading in input file (%s)",
|
---|
5535 | rc, pThis->pszInput);
|
---|
5536 | }
|
---|
5537 | else
|
---|
5538 | {
|
---|
5539 | rc = ScmStreamInitForReadingFromStdInput(&pInput->StrmInput);
|
---|
5540 | if (RT_FAILURE(rc))
|
---|
5541 | return vbcppError(pThis, "ScmStreamInitForReadingFromStdInput returned %Rrc", rc);
|
---|
5542 |
|
---|
5543 | }
|
---|
5544 |
|
---|
5545 | rc = ScmStreamInitForWriting(&pThis->StrmOutput, &pInput->StrmInput);
|
---|
5546 | if (RT_FAILURE(rc))
|
---|
5547 | return vbcppError(pThis, "ScmStreamInitForWriting returned %Rrc", rc);
|
---|
5548 |
|
---|
5549 | pThis->fStrmOutputValid = true;
|
---|
5550 | return RTEXITCODE_SUCCESS;
|
---|
5551 | }
|
---|
5552 |
|
---|
5553 |
|
---|
5554 | /**
|
---|
5555 | * Changes the preprocessing mode.
|
---|
5556 | *
|
---|
5557 | * @param pThis The C preprocessor instance.
|
---|
5558 | * @param enmMode The new mode.
|
---|
5559 | */
|
---|
5560 | static void vbcppSetMode(PVBCPP pThis, VBCPPMODE enmMode)
|
---|
5561 | {
|
---|
5562 | switch (enmMode)
|
---|
5563 | {
|
---|
5564 | case kVBCppMode_Standard:
|
---|
5565 | pThis->fKeepComments = false;
|
---|
5566 | pThis->fRespectSourceDefines = true;
|
---|
5567 | pThis->fAllowRedefiningCmdLineDefines = true;
|
---|
5568 | pThis->fPassThruDefines = false;
|
---|
5569 | pThis->fUndecidedConditionals = false;
|
---|
5570 | pThis->fPassThruPragmaD = false;
|
---|
5571 | pThis->fPassThruPragmaSTD = true;
|
---|
5572 | pThis->fPassThruPragmaOther = true;
|
---|
5573 | pThis->fPassThruError = false;
|
---|
5574 | pThis->fRemoveDroppedLines = false;
|
---|
5575 | pThis->fLineSplicing = true;
|
---|
5576 | pThis->enmIncludeAction = kVBCppIncludeAction_Include;
|
---|
5577 | break;
|
---|
5578 |
|
---|
5579 | case kVBCppMode_Selective:
|
---|
5580 | pThis->fKeepComments = true;
|
---|
5581 | pThis->fRespectSourceDefines = false;
|
---|
5582 | pThis->fAllowRedefiningCmdLineDefines = false;
|
---|
5583 | pThis->fPassThruDefines = true;
|
---|