lib/AsmParser/Parser.cpp

   1 //===- Parser.cpp - Main dispatch module for the Parser library -------------===
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file was developed by the LLVM research group and is distributed under
   6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This library implements the functionality defined in llvm/assembly/parser.h
  11 //
  12 //===------------------------------------------------------------------------===
  13
  14 #include "ParserInternals.h"
  15 #include "llvm/Module.h"
  16 using namespace llvm;
  17
  18
  19 ParseError* TheParseError = 0; /// FIXME: Not threading friendly
  20
  21 Module *llvm::ParseAssemblyFile(const std::string &Filename, ParseError* Err) {
  22   FILE *F = stdin;
  23
  24   if (Filename != "-") {
  25     F = fopen(Filename.c_str(), "r");
  26
  27     if (F == 0) {
  28       if (Err)
  29         Err->setError(Filename,"Could not open file '" + Filename + "'");
  30       return 0;
  31     }
  32   }
  33
  34   TheParseError = Err;
  35   Module *Result = RunVMAsmParser(Filename, F);
  36
  37   if (F != stdin)
  38     fclose(F);
  39
  40   return Result;
  41 }
  42
  43 Module *llvm::ParseAssemblyString(
  44   const char * AsmString, Module * M, ParseError* Err)
  45 {
  46   TheParseError = Err;
  47   return RunVMAsmParser(AsmString, M);
  48 }
  49
  50
  51 //===------------------------------------------------------------------------===
  52 //                              ParseError Class
  53 //===------------------------------------------------------------------------===
  54
  55
  56 void ParseError::setError(const std::string &filename,
  57                          const std::string &message,
  58                          int lineNo, int colNo)
  59 {
  60   Filename = filename;
  61   Message = message;
  62   LineNo = lineNo;
  63   colNo = colNo;
  64 }
  65
  66 ParseError::ParseError(const ParseError &E)
  67   : Filename(E.Filename), Message(E.Message) {
  68   LineNo = E.LineNo;
  69   ColumnNo = E.ColumnNo;
  70 }
  71
  72 // Includes info from options
  73 const std::string ParseError::getMessage() const {
  74   std::string Result;
  75   char Buffer[10];
  76
  77   if (Filename == "-")
  78     Result += "<stdin>";
  79   else
  80     Result += Filename;
  81
  82   if (LineNo != -1) {
  83     sprintf(Buffer, "%d", LineNo);
  84     Result += std::string(":") + Buffer;
  85     if (ColumnNo != -1) {
  86       sprintf(Buffer, "%d", ColumnNo);
  87       Result += std::string(",") + Buffer;
  88     }
  89   }
  90
  91   return Result + ": " + Message;
  92 }