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https://github.com/c64scene-ar/llvm-6502.git
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61c83e023f
Rid the Assembly Parser of exceptions. This is a really gross hack but it will do until the Assembly Parser is re-written as a recursive descent. The basic premise is that wherever the old "ThrowException" function was called (new name: GenerateError) we set a flag (TriggerError). Every production checks that flag and calls YYERROR if it is set. Additionally, each call to ThrowException in the grammar is replaced with GEN_ERROR which calls GenerateError and then YYERROR immediately. This prevents the remaining production from continuing after an error condition. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29763 91177308-0d34-0410-b5e6-96231b3b80d8
93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
//===- Parser.cpp - Main dispatch module for the Parser library -------------===
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This library implements the functionality defined in llvm/assembly/parser.h
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//
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//===------------------------------------------------------------------------===
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#include "ParserInternals.h"
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#include "llvm/Module.h"
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using namespace llvm;
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ParseError* TheParseError = 0; /// FIXME: Not threading friendly
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Module *llvm::ParseAssemblyFile(const std::string &Filename, ParseError* Err) {
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FILE *F = stdin;
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if (Filename != "-") {
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F = fopen(Filename.c_str(), "r");
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if (F == 0) {
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if (Err)
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Err->setError(Filename,"Could not open file '" + Filename + "'");
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return 0;
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}
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}
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TheParseError = Err;
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Module *Result = RunVMAsmParser(Filename, F);
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if (F != stdin)
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fclose(F);
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return Result;
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}
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Module *llvm::ParseAssemblyString(
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const char * AsmString, Module * M, ParseError* Err)
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{
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TheParseError = Err;
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return RunVMAsmParser(AsmString, M);
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}
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//===------------------------------------------------------------------------===
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// ParseError Class
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//===------------------------------------------------------------------------===
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void ParseError::setError(const std::string &filename,
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const std::string &message,
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int lineNo, int colNo)
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{
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Filename = filename;
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Message = message;
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LineNo = lineNo;
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colNo = colNo;
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}
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ParseError::ParseError(const ParseError &E)
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: Filename(E.Filename), Message(E.Message) {
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LineNo = E.LineNo;
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ColumnNo = E.ColumnNo;
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}
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// Includes info from options
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const std::string ParseError::getMessage() const {
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std::string Result;
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char Buffer[10];
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if (Filename == "-")
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Result += "<stdin>";
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else
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Result += Filename;
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if (LineNo != -1) {
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sprintf(Buffer, "%d", LineNo);
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Result += std::string(":") + Buffer;
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if (ColumnNo != -1) {
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sprintf(Buffer, "%d", ColumnNo);
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Result += std::string(",") + Buffer;
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}
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}
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return Result + ": " + Message;
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}
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