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Teach the .ll parser to handle named metadata with non-simple names.

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Unfortunately we can't follow what the rest of the language does (wrapping it
in double-quotes) because that would cause an ambiguity with metadata strings,
so instead we escape any unusual characters with \xx escaping.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133050 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky
2011-06-15 06:37:58 +00:00
parent 7a10ab7d6f
commit 9100a78bce
2 changed files with 23 additions and 3 deletions
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lib/AsmParser/LLLexer.cpp
+4 -2
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@@ -422,13 +422,15 @@ static bool JustWhitespaceNewLine(const char *&Ptr) {
/// !
lltok::Kind LLLexer::LexExclaim() {
// Lex a metadata name as a MetadataVar.
if (isalpha(CurPtr[0])) {
if (isalpha(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
CurPtr[0] == '.' || CurPtr[0] == '_' || CurPtr[0] == '\\') {
++CurPtr;
while (isalnum(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
CurPtr[0] == '.' || CurPtr[0] == '_')
CurPtr[0] == '.' || CurPtr[0] == '_' || CurPtr[0] == '\\')
++CurPtr;
StrVal.assign(TokStart+1, CurPtr); // Skip !
UnEscapeLexed(StrVal);
return lltok::MetadataVar;
}
return lltok::exclaim;