Changeset 30670 in vbox for trunk/include/VBox/com/defs.h

Timestamp:

Jul 6, 2010 2:37:09 PM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

63429

Message:

Main: COM header cleanup (remove obscure and unused templates)

File:

• trunk/include/VBox/com/defs.h (modified) (1 diff)

trunk/include/VBox/com/defs.h

@@ -521 +521 @@
         if ((FAILED (aRC) && !FAILED (mRC)) ||
             (mRC == S_OK && aRC != S_OK))
-            mRC = aRC;
-
-        return *this;
-    }
-
-    operator HRESULT() const { return mRC; }
-
-    HRESULT *operator&() { return &mRC; }
-
-private:
-
-    HRESULT mRC;
-};
-
-/**
- * "Last worst" result type.
- *
- * Variables of this class are used instead of HRESULT variables when it is
- * desirable to memorize the "last worst" result code instead of the last
- * assigned one. In other words, an assignment operation to a variable of this
- * class will succeed only if the result code to assign has the same or worse
- * severity. The following table demonstrate this (the first column lists the
- * previous result code stored in the variable, the first row lists the new
- * assigned, 'A' means the assignment will take place, '> S_OK' means a warning
- * result code):
- *
- * {{{
- *             FAILED    > S_OK    S_OK
- * FAILED        A         -         -
- * > S_OK        A         A         -
- * S_OK          A         A         -
- *
- * }}}
- *
- * In practice, you will need to use a LWResult variable when you call some COM
- * method B after COM method A fails and want to return the result code of B
- * if B also fails, but still want to return the failed result code of A if B
- * issues a warning or succeeds.
- */
-class LWResult
-{
-
-public:
-
-    /**
-     * Constructs a new variable. Note that by default this constructor sets the
-     * result code to E_FAIL to make sure a failure is returned to the caller if
-     * the variable is never assigned another value (which is considered as the
-     * improper use of this class).
-     */
-    LWResult (HRESULT aRC = E_FAIL) : mRC (aRC) {}
-
-    LWResult &operator= (HRESULT aRC)
-    {
-        if (FAILED (aRC) ||
-            (SUCCEEDED (mRC) && aRC != S_OK))
             mRC = aRC;