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/***************************************************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/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/Support/raw_ostream.h"
#include "llvm/IR/Function.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 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 {
TheRewriter.setSourceMgr(CI.getSourceManager(), CI.getLangOpts());
return llvm::make_unique<MyASTConsumer>(TheRewriter);
}
private:
Rewriter TheRewriter;
};
/**********************************************************************************************************************/
/*Main*/
int main(int argc, const char **argv) {
CommonOptionsParser op(argc, argv, MatcherSampleCategory);
ClangTool Tool(op.getCompilations(), op.getSourcePathList());
return Tool.run(newFrontendActionFactory<MyFrontendAction>().get());
}
/*last line intentionally left blank.*/
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