Stage two of getting CFE top correct.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39734 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Lex/MacroInfo.cpp b/Lex/MacroInfo.cpp
new file mode 100644
index 0000000..e6dae42
--- /dev/null
+++ b/Lex/MacroInfo.cpp
@@ -0,0 +1,70 @@
+//===--- MacroInfo.cpp - Information about #defined identifiers -----------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by Chris Lattner and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the MacroInfo interface.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Lex/MacroInfo.h"
+#include "clang/Lex/Preprocessor.h"
+using namespace clang;
+
+MacroInfo::MacroInfo(SourceLocation DefLoc) : Location(DefLoc) {
+ IsFunctionLike = false;
+ IsC99Varargs = false;
+ IsGNUVarargs = false;
+ IsBuiltinMacro = false;
+ IsTargetSpecific = false;
+ IsDisabled = false;
+ IsUsed = true;
+}
+
+/// isIdenticalTo - Return true if the specified macro definition is equal to
+/// this macro in spelling, arguments, and whitespace. This is used to emit
+/// duplicate definition warnings. This implements the rules in C99 6.10.3.
+///
+/// Note that this intentionally does not check isTargetSpecific for matching.
+///
+bool MacroInfo::isIdenticalTo(const MacroInfo &Other, Preprocessor &PP) const {
+ // Check # tokens in replacement, number of args, and various flags all match.
+ if (ReplacementTokens.size() != Other.ReplacementTokens.size() ||
+ Arguments.size() != Other.Arguments.size() ||
+ isFunctionLike() != Other.isFunctionLike() ||
+ isC99Varargs() != Other.isC99Varargs() ||
+ isGNUVarargs() != Other.isGNUVarargs())
+ return false;
+
+ // Check arguments.
+ for (arg_iterator I = arg_begin(), OI = Other.arg_begin(), E = arg_end();
+ I != E; ++I, ++OI)
+ if (*I != *OI) return false;
+
+ // Check all the tokens.
+ for (unsigned i = 0, e = ReplacementTokens.size(); i != e; ++i) {
+ const LexerToken &A = ReplacementTokens[i];
+ const LexerToken &B = Other.ReplacementTokens[i];
+ if (A.getKind() != B.getKind() ||
+ A.isAtStartOfLine() != B.isAtStartOfLine() ||
+ A.hasLeadingSpace() != B.hasLeadingSpace())
+ return false;
+
+ // If this is an identifier, it is easy.
+ if (A.getIdentifierInfo() || B.getIdentifierInfo()) {
+ if (A.getIdentifierInfo() != B.getIdentifierInfo())
+ return false;
+ continue;
+ }
+
+ // Otherwise, check the spelling.
+ if (PP.getSpelling(A) != PP.getSpelling(B))
+ return false;
+ }
+
+ return true;
+}