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add interface for walking macro table. 

llvm-svn: 63925
This commit is contained in:
Chris Lattner 2009-02-06 06:26:42 +00:00
parent f302000e5c
commit 5c7cd6043e
2 changed files with 10 additions and 3 deletions
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9
clang/include/clang/Lex/Preprocessor.h
View File

@ -247,6 +247,15 @@ public:
///
void setMacroInfo(IdentifierInfo *II, MacroInfo *MI);
/// macro_iterator/macro_begin/macro_end - This allows you to walk the current
/// state of the macro table. This visits every currently-defined macro.
typedef llvm::DenseMap<IdentifierInfo*,
MacroInfo*>::const_iterator macro_iterator;
macro_iterator macro_begin() const { return Macros.begin(); }
macro_iterator macro_end() const { return Macros.end(); }
const std::string &getPredefines() const { return Predefines; }
/// setPredefines - Set the predefines for this Preprocessor. These
/// predefines are automatically injected when parsing the main file.

4
clang/lib/Lex/PPLexerChange.cpp
View File

@ -238,11 +238,9 @@ bool Preprocessor::HandleEndOfFile(Token &Result, bool isEndOfMacro) {
// This is the end of the top-level file. If the diag::pp_macro_not_used
// diagnostic is enabled, look for macros that have not been used.
if (Diags.getDiagnosticLevel(diag::pp_macro_not_used) != Diagnostic::Ignored){
for (llvm::DenseMap<IdentifierInfo*, MacroInfo*>::iterator I =
Macros.begin(), E = Macros.end(); I != E; ++I) {
for (macro_iterator I = macro_begin(), E = macro_end(); I != E; ++I)
if (!I->second->isUsed())
Diag(I->second->getDefinitionLoc(), diag::pp_macro_not_used);
}
}
return true;
}