6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-09-24 23:28:41 +00:00
Code Issues Projects Releases Wiki Activity

make the lexer unique strings it lexes instead of passing them back as

Browse Source 
std::strings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74036 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-06-24 00:33:19 +00:00
parent aa551ae10e
commit faf32c102d
3 changed files with 29 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
tools/llvm-mc/AsmLexer.cpp
View File

@@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "AsmLexer.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Config/config.h" // for strtoull.
@@ -20,11 +21,21 @@
#include <cstdlib>
using namespace llvm;
static StringSet<> &getSS(void *TheSS) {
return *(StringSet<>*)TheSS;
}
AsmLexer::AsmLexer(SourceMgr &SM) : SrcMgr(SM) {
CurBuffer = 0;
CurBuf = SrcMgr.getMemoryBuffer(CurBuffer);
CurPtr = CurBuf->getBufferStart();
TokStart = 0;
TheStringSet = new StringSet<>();
}
AsmLexer::~AsmLexer() {
delete &getSS(TheStringSet);
}
SMLoc AsmLexer::getLoc() const {
@@ -75,7 +86,9 @@ asmtok::TokKind AsmLexer::LexIdentifier() {
while (isalnum(*CurPtr) || *CurPtr == '_' || *CurPtr == '$' ||
*CurPtr == '.' || *CurPtr == '@')
++CurPtr;
CurStrVal.assign(TokStart, CurPtr);
// Unique string.
CurStrVal =
getSS(TheStringSet).GetOrCreateValue(TokStart, CurPtr, 0).getKeyData();
return asmtok::Identifier;
}
@@ -86,7 +99,10 @@ asmtok::TokKind AsmLexer::LexPercent() {
while (isalnum(*CurPtr))
++CurPtr;
CurStrVal.assign(TokStart, CurPtr); // Include %
// Unique string.
CurStrVal =
getSS(TheStringSet).GetOrCreateValue(TokStart, CurPtr, 0).getKeyData();
return asmtok::Register;
}
@@ -208,7 +224,9 @@ asmtok::TokKind AsmLexer::LexQuote() {
CurChar = getNextChar();
}
CurStrVal.assign(TokStart, CurPtr); // include quotes.
// Unique string, include quotes for now.
CurStrVal =
getSS(TheStringSet).GetOrCreateValue(TokStart, CurPtr, 0).getKeyData();
return asmtok::String;
}