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SQA-Homework/JackyMa/FuncReturnCheck/MyFirstCheckCheck.cpp

62 lines
2.0 KiB

//===--- MyFirstCheckCheck.cpp - clang-tidy -------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "MyFirstCheckCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
using namespace clang::ast_matchers;
namespace clang {
namespace tidy {
namespace gjb {
void MyFirstCheckCheck::registerMatchers(MatchFinder *Finder) {
// FIXME: Add matchers.
Finder->addMatcher(
functionDecl(isExpansionInMainFile(),
anyOf(hasDescendant(compoundStmt().bind("cpd")),
unless(hasDescendant(compoundStmt().bind("cpd")))),
anyOf(hasDescendant(returnStmt().bind("ret")),
unless(hasDescendant(returnStmt().bind("ret")))))
.bind("func"),
this);
}
void MyFirstCheckCheck::check(const MatchFinder::MatchResult &Result) {
// FIXME: Add callback implementation.
/// get Node which we want to get
if(const auto *MatchedDecl =
Result.Nodes.getNodeAs<FunctionDecl>("func")){
/// ReturnType is not 'void' or 'void *'
if(MatchedDecl->getReturnType().getAsString() != "void"
&& MatchedDecl->getReturnType().getAsString() != "void *"
/// Func Name is not "main"
&& MatchedDecl->getName() != "main"){
/// Func has definition
if(const auto *MatchedCpd =
Result.Nodes.getNodeAs<CompoundStmt>("cpd")){
/// Func has ReturnStmt
if(const auto *MatchedStmt =
Result.Nodes.getNodeAs<ReturnStmt>("ret")){
}
/// Func does not have ReturnStmt
else{
diag(MatchedDecl->getLocation(),
"Function '%0' has no return") << MatchedDecl->getName();
}
}
}
}
}
} // namespace gjb
} // namespace tidy
} // namespace clang