clang  6.0.0svn
ArgumentsAdjusters.cpp
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1 //===--- ArgumentsAdjusters.cpp - Command line arguments adjuster ---------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file contains definitions of classes which implement ArgumentsAdjuster
11 // interface.
12 //
13 //===----------------------------------------------------------------------===//
14 
16 
17 namespace clang {
18 namespace tooling {
19 
20 /// Add -fsyntax-only option to the command line arguments.
22  return [](const CommandLineArguments &Args, StringRef /*unused*/) {
23  CommandLineArguments AdjustedArgs;
24  for (size_t i = 0, e = Args.size(); i != e; ++i) {
25  StringRef Arg = Args[i];
26  // FIXME: Remove options that generate output.
27  if (!Arg.startswith("-fcolor-diagnostics") &&
28  !Arg.startswith("-fdiagnostics-color"))
29  AdjustedArgs.push_back(Args[i]);
30  }
31  AdjustedArgs.push_back("-fsyntax-only");
32  return AdjustedArgs;
33  };
34 }
35 
37  return [](const CommandLineArguments &Args, StringRef /*unused*/) {
38  CommandLineArguments AdjustedArgs;
39  for (size_t i = 0, e = Args.size(); i < e; ++i) {
40  StringRef Arg = Args[i];
41  if (!Arg.startswith("-o"))
42  AdjustedArgs.push_back(Args[i]);
43 
44  if (Arg == "-o") {
45  // Output is specified as -o foo. Skip the next argument too.
46  ++i;
47  }
48  // Else, the output is specified as -ofoo. Just do nothing.
49  }
50  return AdjustedArgs;
51  };
52 }
53 
55  return [](const CommandLineArguments &Args, StringRef /*unused*/) {
56  CommandLineArguments AdjustedArgs;
57  for (size_t i = 0, e = Args.size(); i < e; ++i) {
58  StringRef Arg = Args[i];
59  // All dependency-file options begin with -M. These include -MM,
60  // -MF, -MG, -MP, -MT, -MQ, -MD, and -MMD.
61  if (!Arg.startswith("-M")) {
62  AdjustedArgs.push_back(Args[i]);
63  continue;
64  }
65 
66  if (Arg == "-MF" || Arg == "-MT" || Arg == "-MQ")
67  // These flags take an argument: -MX foo. Skip the next argument also.
68  ++i;
69  }
70  return AdjustedArgs;
71  };
72 }
73 
76  return [Extra, Pos](const CommandLineArguments &Args, StringRef /*unused*/) {
77  CommandLineArguments Return(Args);
78 
79  CommandLineArguments::iterator I;
80  if (Pos == ArgumentInsertPosition::END) {
81  I = Return.end();
82  } else {
83  I = Return.begin();
84  ++I; // To leave the program name in place
85  }
86 
87  Return.insert(I, Extra.begin(), Extra.end());
88  return Return;
89  };
90 }
91 
94  return getInsertArgumentAdjuster(CommandLineArguments(1, Extra), Pos);
95 }
96 
98  ArgumentsAdjuster Second) {
99  if (!First)
100  return Second;
101  if (!Second)
102  return First;
103  return [First, Second](const CommandLineArguments &Args, StringRef File) {
104  return Second(First(Args, File), File);
105  };
106 }
107 
108 } // end namespace tooling
109 } // end namespace clang
ArgumentsAdjuster getInsertArgumentAdjuster(const CommandLineArguments &Extra, ArgumentInsertPosition Pos)
Gets an argument adjuster which inserts Extra arguments in the specified position.
ArgumentsAdjuster getClangStripDependencyFileAdjuster()
Gets an argument adjuster which removes dependency-file related command line arguments.
ArgumentsAdjuster combineAdjusters(ArgumentsAdjuster First, ArgumentsAdjuster Second)
Gets an argument adjuster which adjusts the arguments in sequence with the First adjuster and then wi...
ArgumentsAdjuster getClangStripOutputAdjuster()
Gets an argument adjuster which removes output-related command line arguments.
std::function< CommandLineArguments(const CommandLineArguments &, StringRef Filename)> ArgumentsAdjuster
A prototype of a command line adjuster.
Dataflow Directional Tag Classes.
std::vector< std::string > CommandLineArguments
A sequence of command line arguments.
ArgumentsAdjuster getClangSyntaxOnlyAdjuster()
Gets an argument adjuster that converts input command line arguments to the "syntax check only" varia...