aboutsummaryrefslogtreecommitdiffstats
path: root/mutator-lvl2.cpp
blob: 5bb00207ca32dcd95e6216d83f65ae45d41ed48d (plain) (blame)
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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
/***************************************************Project Mutator****************************************************/
//-*-c++-*-
/*first line intentionally left blank.*/
/*Copyright (C) 2017 Farzad Sadeghi

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.*/
/*code structure inspired by Eli Bendersky's tutorial on Rewriters.*/
/**********************************************************************************************************************/
/*FIXME-all classes should use replacements.*/
/**********************************************************************************************************************/
/*included modules*/
/*project headers*/
#include "mutator_aux.h"
/*standard headers*/
#include <string>
#include <iostream>
#include <cassert>
/*LLVM headers*/
#include "clang/AST/AST.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/ASTMatchers/ASTMatchers.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Basic/LLVM.h"
#include "clang/CodeGen/CodeGenAction.h"
#include "clang/CodeGen/BackendUtil.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Lex/Lexer.h"
#include "clang/Tooling/CommonOptionsParser.h"
#include "clang/Tooling/Tooling.h"
#include "clang/Rewrite/Core/Rewriter.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Function.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Linker/Linker.h"
/**********************************************************************************************************************/
/*used namespaces*/
using namespace llvm;
using namespace clang;
using namespace clang::ast_matchers;
using namespace clang::driver;
using namespace clang::tooling;
/**********************************************************************************************************************/
/*global vars*/

static llvm::cl::OptionCategory MatcherSampleCategory("Matcher Sample");
/**********************************************************************************************************************/
class IfElseFixer : public MatchFinder::MatchCallback
{
public:
  IfElseFixer (Rewriter &Rewrite) : Rewrite (Rewrite) {}

  virtual void run(const MatchFinder::MatchResult &MR)
  {
    /*underdev*/
    if (MR.Nodes.getNodeAs<clang::IfStmt>("mrifelse") != nullptr)
    {
      const IfStmt *ElseIf = MR.Nodes.getNodeAs<clang::IfStmt>("mrifelse");
      //const IfStmt *LastIf = MR.Nodes.getNodeAs<clang::IfStmt>("mrifelse");

      SourceLocation IFESL = ElseIf->getLocStart();
      IFESL = Devi::SourceLocationHasMacro(IFESL, Rewrite, "start");
      SourceLocation IFESLE = ElseIf->getLocEnd();
      IFESLE = Devi::SourceLocationHasMacro(IFESLE, Rewrite, "end");
      SourceRange SR;
      SR.setBegin(IFESL);
      SR.setEnd(IFESLE);

      clang::Rewriter::RewriteOptions opts;

      int RangeSize = Rewrite.getRangeSize(SR, opts);

      //std::cout << IFESLE.printToString(*MR.SourceManager) << "\n" << std::endl;

#if 1
      //Rewrite.InsertText(ElseIf->getThen()->getLocStart(), "{\n", "true", "true");
      Rewrite.InsertTextAfterToken(IFESL.getLocWithOffset(RangeSize + 1U), "else\n{/*intentionally left blank*/\n}\n");
#endif
    }
    else
    {
      std::cout << "matcher -mrifelse- returned nullptr." << std::endl;
    }
  }


private:
  Rewriter &Rewrite;
};
/**********************************************************************************************************************/
class BlankDiagConsumer : public clang::DiagnosticConsumer
{
  public:
    BlankDiagConsumer() = default;
    virtual ~BlankDiagConsumer() {}
    virtual void HandleDiagnostic(DiagnosticsEngine::Level DiagLevel, const Diagnostic &Info) override {}
};
/**********************************************************************************************************************/
class MyASTConsumer : public ASTConsumer {
public:
  MyASTConsumer(Rewriter &R) : HandlerForIfElse(R) {
    Matcher.addMatcher(ifStmt(allOf(hasElse(ifStmt()), unless(hasAncestor(ifStmt())), unless(hasDescendant(ifStmt(hasElse(unless(ifStmt()))))))).bind("mrifelse"), &HandlerForIfElse);
  }

  void HandleTranslationUnit(ASTContext &Context) override {
    Matcher.matchAST(Context);
  }

private:
  IfElseFixer HandlerForIfElse;
  MatchFinder Matcher;
};
/**********************************************************************************************************************/
class MyFrontendAction : public ASTFrontendAction {
public:
  MyFrontendAction() {}
  void EndSourceFileAction() override {
    //TheRewriter.getEditBuffer(TheRewriter.getSourceMgr().getMainFileID()).write(llvm::outs());
  }

  std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, StringRef file) override {
    DiagnosticsEngine &DE = CI.getPreprocessor().getDiagnostics();
    DE.setClient(BDCProto, false);
    TheRewriter.setSourceMgr(CI.getSourceManager(), CI.getLangOpts());
    return llvm::make_unique<MyASTConsumer>(TheRewriter);
  }

private:
  BlankDiagConsumer* BDCProto = new BlankDiagConsumer;
  Rewriter TheRewriter;
};
/**********************************************************************************************************************/
#if 0
class mutatorBEConsumer : public ASTConsumer {
  public:
    using LinkModule = CodeGenAction::LinkModule;
    mutatorBEConsumer(clang::BackendAction Backend_EmitObj, DiagnosticsEngine &diags, const HeaderSearchOptions &HSO, 
        const PreprocessorOptions &PPO, const CodeGenOptions &CGO, const clang::TargetOptions &TO, 
        const LangOptions &LO, bool TimePasses, const std::string &InFile, llvm::SmallVector<LinkModule, 4> LinkModules, 
        std::unique_ptr<raw_pwrite_stream> OS, LLVMContext &C) {}

    virtual void HandleTranslationUnit(ASTContext &astc) {}
};
#endif
/**********************************************************************************************************************/
class mutatorEmitObjAction : public EmitObjAction {
  public:
    mutatorEmitObjAction() {}
};
/**********************************************************************************************************************/
/*Main*/
int main(int argc, const char **argv) {
  CommonOptionsParser op(argc, argv, MatcherSampleCategory);
  ClangTool Tool(op.getCompilations(), op.getSourcePathList());
  std::vector<std::unique_ptr<ASTUnit>> ASTs;
  auto buildASTRes [[maybe_unused]] = Tool.buildASTs(ASTs);

  for (auto &iter : ASTs)
  {
    if (iter->hasSema())
    {
      std::cout << "sema acquired\n";
      iter->Save("./TU.save");
      clang::Sema &selfSema [[maybe_unused]] = iter->getSema();
    }
  }


  return Tool.run(newFrontendActionFactory<MyFrontendAction>().get());
}
/*last line intentionally left blank.*/