Replace the original flex lexer with a hand writen one. This
drops a dependency on flex and lets us make future progress more
easily. Yay for 2 fewer .cvs files to make silly conflicts with.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44213 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/llvmAsmParser.y b/lib/AsmParser/llvmAsmParser.y
index 3525567..599300d 100644
--- a/lib/AsmParser/llvmAsmParser.y
+++ b/lib/AsmParser/llvmAsmParser.y
@@ -29,9 +29,6 @@
#include <list>
#include <map>
#include <utility>
-#ifndef NDEBUG
-#define YYDEBUG 1
-#endif
// The following is a gross hack. In order to rid the libAsmParser library of
// exceptions, we have to have a way of getting the yyparse function to go into
@@ -51,15 +48,6 @@
int yyerror(const char *ErrorMsg); // Forward declarations to prevent "implicit
int yylex(); // declaration" of xxx warnings.
int yyparse();
-
-namespace llvm {
- std::string CurFilename;
-#if YYDEBUG
-static cl::opt<bool>
-Debug("debug-yacc", cl::desc("Print yacc debug state changes"),
- cl::Hidden, cl::init(false));
-#endif
-}
using namespace llvm;
static Module *ParserResult;
@@ -513,7 +501,7 @@
// Remember where this forward reference came from. FIXME, shouldn't we try
// to recycle these things??
CurModule.PlaceHolderInfo.insert(std::make_pair(V, std::make_pair(ID,
- llvmAsmlineno)));
+ LLLgetLineNo())));
if (inFunctionScope())
InsertValue(V, CurFun.LateResolveValues);
@@ -945,22 +933,11 @@
//
static Module* RunParser(Module * M);
-Module *llvm::RunVMAsmParser(const std::string &Filename, FILE *F) {
- set_scan_file(F);
-
- CurFilename = Filename;
- return RunParser(new Module(CurFilename));
-}
-
-Module *llvm::RunVMAsmParser(const char * AsmString, Module * M) {
- set_scan_string(AsmString);
-
- CurFilename = "from_memory";
- if (M == NULL) {
- return RunParser(new Module (CurFilename));
- } else {
- return RunParser(M);
- }
+Module *llvm::RunVMAsmParser(llvm::MemoryBuffer *MB) {
+ InitLLLexer(MB);
+ Module *M = RunParser(new Module(LLLgetFilename()));
+ FreeLexer();
+ return M;
}
%}
@@ -3118,13 +3095,7 @@
// common code from the two 'RunVMAsmParser' functions
static Module* RunParser(Module * M) {
-
- llvmAsmlineno = 1; // Reset the current line number...
CurModule.CurrentModule = M;
-#if YYDEBUG
- yydebug = Debug;
-#endif
-
// Check to make sure the parser succeeded
if (yyparse()) {
if (ParserResult)
@@ -3176,21 +3147,21 @@
}
void llvm::GenerateError(const std::string &message, int LineNo) {
- if (LineNo == -1) LineNo = llvmAsmlineno;
+ if (LineNo == -1) LineNo = LLLgetLineNo();
// TODO: column number in exception
if (TheParseError)
- TheParseError->setError(CurFilename, message, LineNo);
+ TheParseError->setError(LLLgetFilename(), message, LineNo);
TriggerError = 1;
}
int yyerror(const char *ErrorMsg) {
- std::string where
- = std::string((CurFilename == "-") ? std::string("<stdin>") : CurFilename)
- + ":" + utostr((unsigned) llvmAsmlineno) + ": ";
+ std::string where = LLLgetFilename() + ":" + utostr(LLLgetLineNo()) + ": ";
std::string errMsg = where + "error: " + std::string(ErrorMsg);
- if (yychar != YYEMPTY && yychar != 0)
- errMsg += " while reading token: '" + std::string(llvmAsmtext, llvmAsmleng)+
- "'";
+ if (yychar != YYEMPTY && yychar != 0) {
+ errMsg += " while reading token: '";
+ errMsg += std::string(LLLgetTokenStart(),
+ LLLgetTokenStart()+LLLgetTokenLength()) + "'";
+ }
GenerateError(errMsg);
return 0;
}