Parser.cpp revision 32299911657651ea6738d5ce085803dc7b991d34 
1//===- Parser.cpp - Main dispatch module for the Parser library -------------===
2//
3// This library implements the functionality defined in llvm/assembly/parser.h
4//
5//===------------------------------------------------------------------------===
6
7#include "llvm/Analysis/Verifier.h"
8#include "llvm/Module.h"
9#include "ParserInternals.h"
10using std::string;
11
12// The useful interface defined by this file... Parse an ASCII file, and return
13// the internal representation in a nice slice'n'dice'able representation.
14//
15Module *ParseAssemblyFile(const string &Filename) { // throw (ParseException)
16  FILE *F = stdin;
17
18  if (Filename != "-") {
19    F = fopen(Filename.c_str(), "r");
20
21    if (F == 0)
22      throw ParseException(Filename, "Could not open file '" + Filename + "'");
23  }
24
25  Module *Result;
26  try {
27    Result = RunVMAsmParser(Filename, F);
28  } catch (...) {
29    if (F != stdin) fclose(F);      // Make sure to close file descriptor if an
30    throw;                          // exception is thrown
31  }
32
33  if (F != stdin)
34    fclose(F);
35
36  return Result;
37}
38
39
40//===------------------------------------------------------------------------===
41//                              ParseException Class
42//===------------------------------------------------------------------------===
43
44
45ParseException::ParseException(const string &filename, const string &message,
46			       int lineNo, int colNo)
47  : Filename(filename), Message(message) {
48  LineNo = lineNo; ColumnNo = colNo;
49}
50
51ParseException::ParseException(const ParseException &E)
52  : Filename(E.Filename), Message(E.Message) {
53  LineNo = E.LineNo;
54  ColumnNo = E.ColumnNo;
55}
56
57const string ParseException::getMessage() const { // Includes info from options
58  string Result;
59  char Buffer[10];
60
61  if (Filename == "-")
62    Result += "<stdin>";
63  else
64    Result += Filename;
65
66  if (LineNo != -1) {
67    sprintf(Buffer, "%d", LineNo);
68    Result += string(":") + Buffer;
69    if (ColumnNo != -1) {
70      sprintf(Buffer, "%d", ColumnNo);
71      Result += string(",") + Buffer;
72    }
73  }
74
75  return Result + ": " + Message;
76}
77