forked from OSchip/llvm-project
83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
//===- unittests/Analysis/CFGBuildResult.h - CFG tests --------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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#include "clang/Analysis/CFG.h"
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#include "clang/Tooling/Tooling.h"
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#include <memory>
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namespace clang {
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namespace analysis {
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class BuildResult {
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public:
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enum Status {
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ToolFailed,
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ToolRan,
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SawFunctionBody,
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BuiltCFG,
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};
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BuildResult(Status S, const FunctionDecl *Func = nullptr,
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std::unique_ptr<CFG> Cfg = nullptr,
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std::unique_ptr<ASTUnit> AST = nullptr)
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: S(S), Cfg(std::move(Cfg)), AST(std::move(AST)), Func(Func) {}
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Status getStatus() const { return S; }
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CFG *getCFG() const { return Cfg.get(); }
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ASTUnit *getAST() const { return AST.get(); }
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const FunctionDecl *getFunc() const { return Func; }
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private:
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Status S;
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std::unique_ptr<CFG> Cfg;
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std::unique_ptr<ASTUnit> AST;
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const FunctionDecl *Func;
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};
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class CFGCallback : public ast_matchers::MatchFinder::MatchCallback {
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public:
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CFGCallback(std::unique_ptr<ASTUnit> AST) : AST(std::move(AST)) {}
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std::unique_ptr<ASTUnit> AST;
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BuildResult TheBuildResult = BuildResult::ToolRan;
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CFG::BuildOptions Options;
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void run(const ast_matchers::MatchFinder::MatchResult &Result) override {
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const auto *Func = Result.Nodes.getNodeAs<FunctionDecl>("func");
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Stmt *Body = Func->getBody();
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if (!Body)
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return;
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TheBuildResult = BuildResult::SawFunctionBody;
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Options.AddImplicitDtors = true;
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if (std::unique_ptr<CFG> Cfg =
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CFG::buildCFG(nullptr, Body, Result.Context, Options))
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TheBuildResult = {BuildResult::BuiltCFG, Func, std::move(Cfg),
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std::move(AST)};
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}
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};
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inline BuildResult BuildCFG(const char *Code, CFG::BuildOptions Options = {}) {
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std::vector<std::string> Args = {"-std=c++11",
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"-fno-delayed-template-parsing"};
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std::unique_ptr<ASTUnit> AST = tooling::buildASTFromCodeWithArgs(Code, Args);
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if (!AST)
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return BuildResult::ToolFailed;
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CFGCallback Callback(std::move(AST));
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Callback.Options = Options;
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ast_matchers::MatchFinder Finder;
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Finder.addMatcher(ast_matchers::functionDecl().bind("func"), &Callback);
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Finder.matchAST(Callback.AST->getASTContext());
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return std::move(Callback.TheBuildResult);
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}
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} // namespace analysis
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} // namespace clang
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