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
|
//===---- tools/extra/ToolTemplate.cpp - Template for refactoring tool ----===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements an empty refactoring tool using the clang tooling.
// The goal is to lower the "barrier to entry" for writing refactoring tools.
//
// Usage:
// tool-template <cmake-output-dir> <file1> <file2> ...
//
// Where <cmake-output-dir> is a CMake build directory in which a file named
// compile_commands.json exists (enable -DCMAKE_EXPORT_COMPILE_COMMANDS in
// CMake to get this output).
//
// <file1> ... specify the paths of files in the CMake source tree. This path
// is looked up in the compile command database. If the path of a file is
// absolute, it needs to point into CMake's source tree. If the path is
// relative, the current working directory needs to be in the CMake source
// tree and the file must be in a subdirectory of the current working
// directory. "./" prefixes in the relative files will be automatically
// removed, but the rest of a relative path must be a suffix of a path in
// the compile command line database.
//
// For example, to use tool-template on all files in a subtree of the
// source tree, use:
//
// /path/in/subtree $ find . -name '*.cpp'|
// xargs tool-template /path/to/build
//
//===----------------------------------------------------------------------===//
#include "clang/ASTMatchers/ASTMatchers.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Lex/Lexer.h"
#include "clang/Tooling/CompilationDatabase.h"
#include "clang/Tooling/Refactoring.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Signals.h"
using namespace clang;
using namespace clang::ast_matchers;
using namespace clang::tooling;
using namespace llvm;
namespace {
class ToolTemplateCallback : public MatchFinder::MatchCallback {
public:
ToolTemplateCallback(Replacements *Replace) : Replace(Replace) {}
virtual void run(const MatchFinder::MatchResult &Result) {
// TODO: This routine will get called for each thing that the matchers find.
// At this point, you can examine the match, and do whatever you want,
// including replacing the matched text with other text
(void) Replace; // This to prevent an "unused member variable" warning;
}
private:
Replacements *Replace;
};
} // end anonymous namespace
// Set up the command line options
cl::opt<std::string> BuildPath(
cl::Positional,
cl::desc("<build-path>"));
cl::list<std::string> SourcePaths(
cl::Positional,
cl::desc("<source0> [... <sourceN>]"),
cl::OneOrMore);
int main(int argc, const char **argv) {
llvm::sys::PrintStackTraceOnErrorSignal();
std::unique_ptr<CompilationDatabase> Compilations(
FixedCompilationDatabase::loadFromCommandLine(argc, argv));
cl::ParseCommandLineOptions(argc, argv);
if (!Compilations) { // Couldn't find a compilation DB from the command line
std::string ErrorMessage;
Compilations.reset(
!BuildPath.empty() ?
CompilationDatabase::autoDetectFromDirectory(BuildPath, ErrorMessage) :
CompilationDatabase::autoDetectFromSource(SourcePaths[0], ErrorMessage)
);
// Still no compilation DB? - bail.
if (!Compilations)
llvm::report_fatal_error(ErrorMessage);
}
RefactoringTool Tool(*Compilations, SourcePaths);
ast_matchers::MatchFinder Finder;
ToolTemplateCallback Callback(&Tool.getReplacements());
// TODO: Put your matchers here.
// Use Finder.addMatcher(...) to define the patterns in the AST that you
// want to match against. You are not limited to just one matcher!
return Tool.run(newFrontendActionFactory(&Finder));
}
|
