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Use this new fangled StringSwitch technology.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121273 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2010-12-08 20:02:49 +00:00
parent cc78f5c09c
commit cd466f582a
1 changed files with 19 additions and 31 deletions
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50
utils/TableGen/TGLexer.cpp
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@ -12,10 +12,11 @@
//===----------------------------------------------------------------------===//
#include "TGLexer.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Config/config.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Twine.h"
#include <cctype>
#include <cstdio>
#include <cstdlib>
@ -419,36 +420,23 @@ tgtok::TokKind TGLexer::LexExclaim() {
++CurPtr;
// Check to see which operator this is.
switch (CurPtr - Start) {
default:
break;
case 2:
if (!memcmp(Start, "eq", 2)) return tgtok::XEq;
if (!memcmp(Start, "if", 2)) return tgtok::XIf;
break;
case 3:
if (!memcmp(Start, "car", 3)) return tgtok::XCar;
if (!memcmp(Start, "cdr", 3)) return tgtok::XCdr;
if (!memcmp(Start, "con", 3)) return tgtok::XConcat;
if (!memcmp(Start, "shl", 3)) return tgtok::XSHL;
if (!memcmp(Start, "sra", 3)) return tgtok::XSRA;
if (!memcmp(Start, "srl", 3)) return tgtok::XSRL;
break;
case 4:
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;
}
tgtok::TokKind Kind =
StringSwitch<tgtok::TokKind>(StringRef(Start, CurPtr - Start))
.Case("eq", tgtok::XEq)
.Case("if", tgtok::XIf)
.Case("car", tgtok::XCar)
.Case("cdr", tgtok::XCdr)
.Case("con", tgtok::XConcat)
.Case("shl", tgtok::XSHL)
.Case("sra", tgtok::XSRA)
.Case("srl", tgtok::XSRL)
.Case("cast", tgtok::XCast)
.Case("null", tgtok::XNull)
.Case("subst", tgtok::XSubst)
.Case("foreach", tgtok::XForEach)
.Case("strconcat", tgtok::XStrConcat)
.Default(tgtok::Error);
return ReturnError(Start - 1, "Unknown operator");
return Kind != tgtok::Error ? Kind : ReturnError(Start-1, "Unknown operator");
}