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Simplify code. No functionality change. 

llvm-svn: 141299
This commit is contained in:
Benjamin Kramer 2011-10-06 18:23:56 +00:00
parent 5bad4afa2f
commit a54985ee90
1 changed files with 24 additions and 26 deletions
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50
llvm/lib/TableGen/TGLexer.cpp
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@ -208,40 +208,38 @@ tgtok::TokKind TGLexer::LexVarName() {
tgtok::TokKind TGLexer::LexIdentifier() {
// The first letter is [a-zA-Z_#].
const char *IdentStart = TokStart;
// Match the rest of the identifier regex: [0-9a-zA-Z_#]*
while (isalpha(*CurPtr) || isdigit(*CurPtr) || *CurPtr == '_' ||
*CurPtr == '#')
++CurPtr;
// Check to see if this identifier is a keyword.
unsigned Len = CurPtr-IdentStart;
if (Len == 3 && !memcmp(IdentStart, "int", 3)) return tgtok::Int;
if (Len == 3 && !memcmp(IdentStart, "bit", 3)) return tgtok::Bit;
if (Len == 4 && !memcmp(IdentStart, "bits", 4)) return tgtok::Bits;
if (Len == 6 && !memcmp(IdentStart, "string", 6)) return tgtok::String;
if (Len == 4 && !memcmp(IdentStart, "list", 4)) return tgtok::List;
if (Len == 4 && !memcmp(IdentStart, "code", 4)) return tgtok::Code;
if (Len == 3 && !memcmp(IdentStart, "dag", 3)) return tgtok::Dag;
if (Len == 5 && !memcmp(IdentStart, "class", 5)) return tgtok::Class;
if (Len == 3 && !memcmp(IdentStart, "def", 3)) return tgtok::Def;
if (Len == 8 && !memcmp(IdentStart, "multidef", 8)) return tgtok::MultiDef;
if (Len == 4 && !memcmp(IdentStart, "defm", 4)) return tgtok::Defm;
if (Len == 10 && !memcmp(IdentStart, "multiclass", 10))
return tgtok::MultiClass;
if (Len == 5 && !memcmp(IdentStart, "field", 5)) return tgtok::Field;
if (Len == 3 && !memcmp(IdentStart, "let", 3)) return tgtok::Let;
if (Len == 2 && !memcmp(IdentStart, "in", 2)) return tgtok::In;
if (Len == 7 && !memcmp(IdentStart, "include", 7)) {
StringRef Str(IdentStart, CurPtr-IdentStart);
if (Str == "int") return tgtok::Int;
if (Str == "bit") return tgtok::Bit;
if (Str == "bits") return tgtok::Bits;
if (Str == "string") return tgtok::String;
if (Str == "list") return tgtok::List;
if (Str == "code") return tgtok::Code;
if (Str == "dag") return tgtok::Dag;
if (Str == "class") return tgtok::Class;
if (Str == "def") return tgtok::Def;
if (Str == "multidef") return tgtok::MultiDef;
if (Str == "defm") return tgtok::Defm;
if (Str == "multiclass") return tgtok::MultiClass;
if (Str == "field") return tgtok::Field;
if (Str == "let") return tgtok::Let;
if (Str == "in") return tgtok::In;
if (Str == "include") {
if (LexInclude()) return tgtok::Error;
return Lex();
}
CurStrVal.assign(IdentStart, CurPtr);
CurStrVal.assign(Str.begin(), Str.end());
return tgtok::Id;
}