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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef TOOLS_CLANG_PLUGINS_CHROMECLASSTESTER_H_
#define TOOLS_CLANG_PLUGINS_CHROMECLASSTESTER_H_
#include <set>
#include <vector>
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/TypeLoc.h"
#include "clang/Frontend/CompilerInstance.h"
// A class on top of ASTConsumer that forwards classes defined in Chromium
// headers to subclasses which implement CheckChromeClass().
class ChromeClassTester : public clang::ASTConsumer {
public:
explicit ChromeClassTester(clang::CompilerInstance& instance);
virtual ~ChromeClassTester();
// clang::ASTConsumer:
virtual void HandleTagDeclDefinition(clang::TagDecl* tag);
virtual bool HandleTopLevelDecl(clang::DeclGroupRef group_ref);
protected:
clang::CompilerInstance& instance() { return instance_; }
clang::DiagnosticsEngine& diagnostic() { return diagnostic_; }
// Emits a simple warning; this shouldn't be used if you require printf-style
// printing.
void emitWarning(clang::SourceLocation loc, const char* error);
// Utility method for subclasses to check if this class is in a banned
// namespace.
bool InBannedNamespace(const clang::Decl* record);
// Utility method for subclasses to determine the namespace of the
// specified record, if any. Unnamed namespaces will be identified as
// "<anonymous namespace>".
std::string GetNamespace(const clang::Decl* record);
// Utility method for subclasses to check if this class is within an
// implementation (.cc, .cpp, .mm) file.
bool InImplementationFile(clang::SourceLocation location);
private:
void BuildBannedLists();
void CheckTag(clang::TagDecl*);
// Filtered versions of tags that are only called with things defined in
// chrome header files.
virtual void CheckChromeClass(clang::SourceLocation record_location,
clang::CXXRecordDecl* record) = 0;
// Utility methods used for filtering out non-chrome classes (and ones we
// deliberately ignore) in HandleTagDeclDefinition().
std::string GetNamespaceImpl(const clang::DeclContext* context,
const std::string& candidate);
bool InBannedDirectory(clang::SourceLocation loc);
bool IsIgnoredType(const std::string& base_name);
// Attempts to determine the filename for the given SourceLocation.
// Returns false if the filename could not be determined.
bool GetFilename(clang::SourceLocation loc, std::string* filename);
clang::CompilerInstance& instance_;
clang::DiagnosticsEngine& diagnostic_;
// List of banned namespaces.
std::vector<std::string> banned_namespaces_;
// List of banned directories.
std::vector<std::string> banned_directories_;
// List of types that we don't check.
std::set<std::string> ignored_record_names_;
// List of decls to check once the current top-level decl is parsed.
std::vector<clang::TagDecl*> pending_class_decls_;
};
#endif // TOOLS_CLANG_PLUGINS_CHROMECLASSTESTER_H_
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