clang  3.7.0
CommandLineSourceLoc.h
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1 
2 //===--- CommandLineSourceLoc.h - Parsing for source locations-*- C++ -*---===//
3 //
4 // The LLVM Compiler Infrastructure
5 //
6 // This file is distributed under the University of Illinois Open Source
7 // License. See LICENSE.TXT for details.
8 //
9 //===----------------------------------------------------------------------===//
10 //
11 // Command line parsing for source locations.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_CLANG_FRONTEND_COMMANDLINESOURCELOC_H
16 #define LLVM_CLANG_FRONTEND_COMMANDLINESOURCELOC_H
17 
18 #include "clang/Basic/LLVM.h"
19 #include "llvm/Support/CommandLine.h"
20 #include "llvm/Support/raw_ostream.h"
21 
22 namespace clang {
23 
24 /// \brief A source location that has been parsed on the command line.
26  std::string FileName;
27  unsigned Line;
28  unsigned Column;
29 
30 public:
31  /// Construct a parsed source location from a string; the Filename is empty on
32  /// error.
33  static ParsedSourceLocation FromString(StringRef Str) {
35  std::pair<StringRef, StringRef> ColSplit = Str.rsplit(':');
36  std::pair<StringRef, StringRef> LineSplit =
37  ColSplit.first.rsplit(':');
38 
39  // If both tail splits were valid integers, return success.
40  if (!ColSplit.second.getAsInteger(10, PSL.Column) &&
41  !LineSplit.second.getAsInteger(10, PSL.Line)) {
42  PSL.FileName = LineSplit.first;
43 
44  // On the command-line, stdin may be specified via "-". Inside the
45  // compiler, stdin is called "<stdin>".
46  if (PSL.FileName == "-")
47  PSL.FileName = "<stdin>";
48  }
49 
50  return PSL;
51  }
52 };
53 
54 }
55 
56 namespace llvm {
57  namespace cl {
58  /// \brief Command-line option parser that parses source locations.
59  ///
60  /// Source locations are of the form filename:line:column.
61  template<>
62  class parser<clang::ParsedSourceLocation> final
63  : public basic_parser<clang::ParsedSourceLocation> {
64  public:
65  inline bool parse(Option &O, StringRef ArgName, StringRef ArgValue,
67  };
68 
69  bool
71  parse(Option &O, StringRef ArgName, StringRef ArgValue,
73  using namespace clang;
74 
75  Val = ParsedSourceLocation::FromString(ArgValue);
76  if (Val.FileName.empty()) {
77  errs() << "error: "
78  << "source location must be of the form filename:line:column\n";
79  return true;
80  }
81 
82  return false;
83  }
84  }
85 }
86 
87 #endif
A source location that has been parsed on the command line.
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified...
bool parse(Option &O, StringRef ArgName, StringRef ArgValue, clang::ParsedSourceLocation &Val)
static ParsedSourceLocation FromString(StringRef Str)