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 // The useful interface defined by this file... Parse an ASCII file, and return
19 // the internal representation in a nice slice'n'dice'able representation.
20 //
21 Module *llvm::ParseAssemblyFile(const std::string &Filename) {
22   FILE *F = stdin;
23 
24   if (Filename != "-") {
25     F = fopen(Filename.c_str(), "r");
26 
27     if (F == 0)
28       throw ParseException(Filename, "Could not open file '" + Filename + "'");
29   }
30 
31   Module *Result;
32   try {
33     Result = RunVMAsmParser(Filename, F);
34   } catch (...) {
35     if (F != stdin) fclose(F);      // Make sure to close file descriptor if an
36     throw;                          // exception is thrown
37   }
38 
39   if (F != stdin)
40     fclose(F);
41 
42   return Result;
43 }
44 
45 Module *llvm::ParseAssemblyString(const char * AsmString, Module * M) {
46   return RunVMAsmParser(AsmString, M);
47 }
48 
49 
50 //===------------------------------------------------------------------------===
51 //                              ParseException Class
52 //===------------------------------------------------------------------------===
53 
54 
55 ParseException::ParseException(const std::string &filename,
56                                const std::string &message,
57                                int lineNo, int colNo)
58   : Filename(filename), Message(message) {
59   LineNo = lineNo; ColumnNo = colNo;
60 }
61 
62 ParseException::ParseException(const ParseException &E)
63   : Filename(E.Filename), Message(E.Message) {
64   LineNo = E.LineNo;
65   ColumnNo = E.ColumnNo;
66 }
67 
68 // Includes info from options
69 const std::string ParseException::getMessage() const {
70   std::string Result;
71   char Buffer[10];
72 
73   if (Filename == "-")
74     Result += "<stdin>";
75   else
76     Result += Filename;
77 
78   if (LineNo != -1) {
79     sprintf(Buffer, "%d", LineNo);
80     Result += std::string(":") + Buffer;
81     if (ColumnNo != -1) {
82       sprintf(Buffer, "%d", ColumnNo);
83       Result += std::string(",") + Buffer;
84     }
85   }
86 
87   return Result + ": " + Message;
88 }
89