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Use this new fangled StringSwitch technology. 

llvm-svn: 121273
This commit is contained in:
Bill Wendling 2010-12-08 20:02:49 +00:00
parent dae32fd206
commit 55bc7187ac
1 changed files with 19 additions and 31 deletions
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50
llvm/utils/TableGen/TGLexer.cpp
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@ -12,10 +12,11 @@
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
#include "TGLexer.h" #include "TGLexer.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/SourceMgr.h" #include "llvm/Support/SourceMgr.h"
#include "llvm/Support/MemoryBuffer.h" #include "llvm/Support/MemoryBuffer.h"
#include "llvm/Config/config.h" #include "llvm/Config/config.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Twine.h"
#include <cctype> #include <cctype>
#include <cstdio> #include <cstdio>
#include <cstdlib> #include <cstdlib>
@ -419,36 +420,23 @@ tgtok::TokKind TGLexer::LexExclaim() {
++CurPtr; ++CurPtr;
// Check to see which operator this is. // Check to see which operator this is.
switch (CurPtr - Start) { tgtok::TokKind Kind =
default: StringSwitch<tgtok::TokKind>(StringRef(Start, CurPtr - Start))
break; .Case("eq", tgtok::XEq)
case 2: .Case("if", tgtok::XIf)
if (!memcmp(Start, "eq", 2)) return tgtok::XEq; .Case("car", tgtok::XCar)
if (!memcmp(Start, "if", 2)) return tgtok::XIf; .Case("cdr", tgtok::XCdr)
break; .Case("con", tgtok::XConcat)
case 3: .Case("shl", tgtok::XSHL)
if (!memcmp(Start, "car", 3)) return tgtok::XCar; .Case("sra", tgtok::XSRA)
if (!memcmp(Start, "cdr", 3)) return tgtok::XCdr; .Case("srl", tgtok::XSRL)
if (!memcmp(Start, "con", 3)) return tgtok::XConcat; .Case("cast", tgtok::XCast)
if (!memcmp(Start, "shl", 3)) return tgtok::XSHL; .Case("null", tgtok::XNull)
if (!memcmp(Start, "sra", 3)) return tgtok::XSRA; .Case("subst", tgtok::XSubst)
if (!memcmp(Start, "srl", 3)) return tgtok::XSRL; .Case("foreach", tgtok::XForEach)
break; .Case("strconcat", tgtok::XStrConcat)
case 4: .Default(tgtok::Error);
if (!memcmp(Start, "cast", 4)) return tgtok::XCast;
if (!memcmp(Start, "null", 4)) return tgtok::XNull;
break;
case 5:
if (!memcmp(Start, "subst", 5)) return tgtok::XSubst;
break;
case 7:
if (!memcmp(Start, "foreach", 7)) return tgtok::XForEach;
break;
case 9:
if (!memcmp(Start, "strconcat", 9)) return tgtok::XStrConcat;
break;
}
return ReturnError(Start - 1, "Unknown operator"); return Kind != tgtok::Error ? Kind : ReturnError(Start-1, "Unknown operator");
} }