1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===- CommonOptionsParser.h - common options for clang tools -*- C++ -*-=====//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the CommonOptionsParser class used to parse common
// command-line options for clang tools, so that they can be run as separate
// command-line applications with a consistent common interface for handling
// compilation database and input files.
//
// It provides a common subset of command-line options, common algorithm
// for locating a compilation database and source files, and help messages
// for the basic command-line interface.
//
// It creates a CompilationDatabase and reads common command-line options.
//
// This class uses the Clang Tooling infrastructure, see
// http://clang.llvm.org/docs/HowToSetupToolingForLLVM.html
// for details on setting it up with LLVM source tree.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLING_COMMONOPTIONSPARSER_H
#define LLVM_CLANG_TOOLING_COMMONOPTIONSPARSER_H
#include "clang/Tooling/ArgumentsAdjusters.h"
#include "clang/Tooling/CompilationDatabase.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Error.h"
namespace clang {
namespace tooling {
/// A parser for options common to all command-line Clang tools.
///
/// Parses a common subset of command-line arguments, locates and loads a
/// compilation commands database and runs a tool with user-specified action. It
/// also contains a help message for the common command-line options.
///
/// An example of usage:
/// \code
/// #include "clang/Frontend/FrontendActions.h"
/// #include "clang/Tooling/CommonOptionsParser.h"
/// #include "clang/Tooling/Tooling.h"
/// #include "llvm/Support/CommandLine.h"
///
/// using namespace clang::tooling;
/// using namespace llvm;
///
/// static cl::OptionCategory MyToolCategory("My tool options");
/// static cl::extrahelp CommonHelp(CommonOptionsParser::HelpMessage);
/// static cl::extrahelp MoreHelp("\nMore help text...\n");
/// static cl::opt<bool> YourOwnOption(...);
/// ...
///
/// int main(int argc, const char **argv) {
/// CommonOptionsParser OptionsParser(argc, argv, MyToolCategory);
/// ClangTool Tool(OptionsParser.getCompilations(),
/// OptionsParser.getSourcePathList());
/// return Tool.run(newFrontendActionFactory<SyntaxOnlyAction>().get());
/// }
/// \endcode
class CommonOptionsParser {
protected:
/// Parses command-line, initializes a compilation database.
///
/// This constructor can change argc and argv contents, e.g. consume
/// command-line options used for creating FixedCompilationDatabase.
///
/// All options not belonging to \p Category become hidden.
///
/// It also allows calls to set the required number of positional parameters.
CommonOptionsParser(
int &argc, const char **argv, llvm::cl::OptionCategory &Category,
llvm::cl::NumOccurrencesFlag OccurrencesFlag = llvm::cl::OneOrMore,
const char *Overview = nullptr);
public:
/// A factory method that is similar to the above constructor, except
/// this returns an error instead exiting the program on error.
static llvm::Expected<CommonOptionsParser>
create(int &argc, const char **argv, llvm::cl::OptionCategory &Category,
llvm::cl::NumOccurrencesFlag OccurrencesFlag = llvm::cl::OneOrMore,
const char *Overview = nullptr);
/// Returns a reference to the loaded compilations database.
CompilationDatabase &getCompilations() {
return *Compilations;
}
/// Returns a list of source file paths to process.
const std::vector<std::string> &getSourcePathList() const {
return SourcePathList;
}
/// Returns the argument adjuster calculated from "--extra-arg" and
//"--extra-arg-before" options.
ArgumentsAdjuster getArgumentsAdjuster() { return Adjuster; }
static const char *const HelpMessage;
private:
CommonOptionsParser() = default;
llvm::Error init(int &argc, const char **argv,
llvm::cl::OptionCategory &Category,
llvm::cl::NumOccurrencesFlag OccurrencesFlag,
const char *Overview);
std::unique_ptr<CompilationDatabase> Compilations;
std::vector<std::string> SourcePathList;
ArgumentsAdjuster Adjuster;
};
class ArgumentsAdjustingCompilations : public CompilationDatabase {
public:
ArgumentsAdjustingCompilations(
std::unique_ptr<CompilationDatabase> Compilations)
: Compilations(std::move(Compilations)) {}
void appendArgumentsAdjuster(ArgumentsAdjuster Adjuster);
std::vector<CompileCommand>
getCompileCommands(StringRef FilePath) const override;
std::vector<std::string> getAllFiles() const override;
std::vector<CompileCommand> getAllCompileCommands() const override;
private:
std::unique_ptr<CompilationDatabase> Compilations;
std::vector<ArgumentsAdjuster> Adjusters;
std::vector<CompileCommand>
adjustCommands(std::vector<CompileCommand> Commands) const;
};
} // namespace tooling
} // namespace clang
#endif // LLVM_CLANG_TOOLING_COMMONOPTIONSPARSER_H
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
|
