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/*
This file is part of the clazy static checker.
Copyright (C) 2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
Author: Sérgio Martins <sergio.martins@kdab.com>
Copyright (C) 2015-2017 Sergio Martins <smartins@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef CHECK_BASE_H
#define CHECK_BASE_H
#include "clazy_export.h"
#include "clazy_stl.h"
#include <clang/Basic/SourceManager.h>
#include <clang/Frontend/CompilerInstance.h>
#include <clang/Parse/Parser.h>
#include <llvm/Config/llvm-config.h>
#include "clang/ASTMatchers/ASTMatchers.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include <string>
namespace clang {
class CXXMethodDecl;
class Stmt;
class Decl;
class TranslationUnitDecl;
class FixItHint;
class PresumedLoc;
class SourceLocation;
class PreprocessorOptions;
}
class CheckBase;
class ClazyContext;
enum CheckLevel {
CheckLevelUndefined = -1,
CheckLevel0 = 0, // 100% safe, no false-positives, very useful
CheckLevel1, // Similar to CheckLevel0, but sometimes (rarely) there might be some false positive
CheckLevel2, // Sometimes has false-positives (20-30%)
CheckLevel3 = 3, // Not always correct, possibly very noisy, requires a knowledgeable developer to review, might have a very big rate of false-positives
HiddenCheckLevel, // The check is hidden and must be explicitly enabled
MaxCheckLevel = CheckLevel3,
DefaultCheckLevel = CheckLevel1
};
class ClazyPreprocessorCallbacks : public clang::PPCallbacks
{
public:
ClazyPreprocessorCallbacks(const ClazyPreprocessorCallbacks &) = delete;
explicit ClazyPreprocessorCallbacks(CheckBase *check);
void MacroExpands(const clang::Token &MacroNameTok, const clang::MacroDefinition &,
clang::SourceRange, const clang::MacroArgs *) override;
void MacroDefined(const clang::Token &MacroNameTok, const clang::MacroDirective*) override;
void Defined(const clang::Token &MacroNameTok, const clang::MacroDefinition &, clang::SourceRange Range) override;
void Ifdef(clang::SourceLocation, const clang::Token &MacroNameTok, const clang::MacroDefinition &) override;
private:
CheckBase *const check;
};
class ClazyAstMatcherCallback : public clang::ast_matchers::MatchFinder::MatchCallback
{
public:
explicit ClazyAstMatcherCallback(CheckBase *check);
protected:
CheckBase *const m_check;
};
class CLAZYLIB_EXPORT CheckBase
{
public:
enum Option {
Option_None = 0
};
typedef int Options;
typedef std::vector<CheckBase*> List;
explicit CheckBase(const std::string &name, const ClazyContext *context, Options = Option_None);
CheckBase(const CheckBase &other) = delete;
virtual ~CheckBase();
void VisitStatement(clang::Stmt *stm);
void VisitDeclaration(clang::Decl *stm);
std::string name() const { return m_name; }
void setEnabledFixits(int);
bool isFixitEnabled(int fixit) const;
void emitWarning(const clang::Decl *, const std::string &error, bool printWarningTag = true);
void emitWarning(const clang::Stmt *, const std::string &error, bool printWarningTag = true);
void emitWarning(clang::SourceLocation loc, const std::string &error, bool printWarningTag = true);
void emitWarning(clang::SourceLocation loc, std::string error, const std::vector<clang::FixItHint> &fixits, bool printWarningTag = true);
void emitInternalError(clang::SourceLocation loc, std::string error);
virtual void registerASTMatchers(clang::ast_matchers::MatchFinder &) {};
protected:
virtual void VisitStmt(clang::Stmt *stm);
virtual void VisitDecl(clang::Decl *decl);
virtual void VisitMacroExpands(const clang::Token ¯oNameTok, const clang::SourceRange &);
virtual void VisitMacroDefined(const clang::Token ¯oNameTok);
virtual void VisitDefined(const clang::Token ¯oNameTok, const clang::SourceRange &);
virtual void VisitIfdef(clang::SourceLocation, const clang::Token ¯oNameTok);
void enablePreProcessorCallbacks();
bool shouldIgnoreFile(clang::SourceLocation) const;
void reallyEmitWarning(clang::SourceLocation loc, const std::string &error, const std::vector<clang::FixItHint> &fixits);
void queueManualFixitWarning(clang::SourceLocation loc, int fixitType, const std::string &message = {});
bool warningAlreadyEmitted(clang::SourceLocation loc) const;
bool manualFixitAlreadyQueued(clang::SourceLocation loc) const;
virtual std::vector<std::string> supportedOptions() const;
bool isOptionSet(const std::string &optionName) const;
// 3 shortcuts for stuff that litter the codebase all over.
const clang::SourceManager &sm() const { return m_sm; }
const clang::LangOptions &lo() const { return m_astContext.getLangOpts(); }
const clang::SourceManager &m_sm;
const std::string m_name;
const ClazyContext *const m_context;
clang::ASTContext &m_astContext;
const clang::PreprocessorOptions &m_preprocessorOpts;
clang::TranslationUnitDecl *const m_tu;
clang::CXXMethodDecl *m_lastMethodDecl = nullptr;
clang::Decl *m_lastDecl = nullptr;
clang::Stmt *m_lastStmt = nullptr;
std::vector<std::string> m_filesToIgnore;
private:
friend class ClazyPreprocessorCallbacks;
friend class ClazyAstMatcherCallback;
ClazyPreprocessorCallbacks *const m_preprocessorCallbacks;
std::vector<unsigned int> m_emittedWarningsInMacro;
std::vector<unsigned int> m_emittedManualFixItsWarningsInMacro;
std::vector<std::pair<clang::SourceLocation, std::string>> m_queuedManualInterventionWarnings;
int m_enabledFixits = 0;
};
#endif
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