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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef INCLUDED_COMPILERPLUGINS_CLANG_COMPAT_HXX
#define INCLUDED_COMPILERPLUGINS_CLANG_COMPAT_HXX
#include <memory>
#include <string>
#include "clang/AST/Decl.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/Expr.h"
#include "clang/AST/Type.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/DiagnosticIDs.h"
#include "clang/Basic/Linkage.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/Visibility.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Lex/PPCallbacks.h"
#include "clang/Lex/Preprocessor.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/raw_ostream.h"
#include "config_clang.h"
// Compatibility wrapper to abstract over (trivial) changes in the Clang API:
namespace compat {
inline bool isLookupContext(clang::DeclContext const & ctxt) {
#if CLANG_VERSION >= 30700
return ctxt.isLookupContext();
#else
return !ctxt.isFunctionOrMethod()
&& ctxt.getDeclKind() != clang::Decl::LinkageSpec;
#endif
}
inline bool forallBases(
clang::CXXRecordDecl const & decl,
clang::CXXRecordDecl::ForallBasesCallback BaseMatches,
void* callbackParam,
bool AllowShortCircuit)
{
#if CLANG_VERSION >= 30800
(void) callbackParam;
return decl.forallBases(BaseMatches, AllowShortCircuit);
#else
return decl.forallBases(BaseMatches, callbackParam, AllowShortCircuit);
#endif
}
inline clang::QualType getReturnType(clang::FunctionDecl const & decl) {
#if CLANG_VERSION >= 30500
return decl.getReturnType();
#else
return decl.getResultType();
#endif
}
#if CLANG_VERSION >= 30900
inline clang::ArrayRef<clang::ParmVarDecl *> parameters(
clang::FunctionDecl const & decl)
{
return decl.parameters();
}
#elif CLANG_VERSION >= 30500
inline clang::FunctionDecl::param_const_range parameters(
clang::FunctionDecl const & decl)
{
return decl.params();
}
#else
struct FunctionDeclParamsWrapper
{
clang::FunctionDecl const & decl;
FunctionDeclParamsWrapper(clang::FunctionDecl const & _decl) : decl(_decl) {}
clang::FunctionDecl::param_const_iterator begin() const { return decl.param_begin(); }
clang::FunctionDecl::param_const_iterator end() const { return decl.param_end(); }
};
inline FunctionDeclParamsWrapper parameters(
clang::FunctionDecl const & decl)
{
return FunctionDeclParamsWrapper(decl);
}
#endif
inline clang::QualType getReturnType(clang::FunctionProtoType const & type) {
#if CLANG_VERSION >= 30500
return type.getReturnType();
#else
return type.getResultType();
#endif
}
inline unsigned getNumParams(clang::FunctionProtoType const & type) {
#if CLANG_VERSION >= 30500
return type.getNumParams();
#else
return type.getNumArgs();
#endif
}
inline clang::QualType getParamType(
clang::FunctionProtoType const & type, unsigned i)
{
#if CLANG_VERSION >= 30500
return type.getParamType(i);
#else
return type.getArgType(i);
#endif
}
inline clang::Stmt::const_child_iterator begin(
clang::Stmt::const_child_range const & range)
{
#if CLANG_VERSION >= 30800
return range.begin();
#else
return range.first;
#endif
}
inline clang::Stmt::const_child_iterator end(
clang::Stmt::const_child_range const & range)
{
#if CLANG_VERSION >= 30800
return range.end();
#else
return range.second;
#endif
}
inline unsigned getBuiltinCallee(clang::CallExpr const & expr) {
#if CLANG_VERSION >= 30500
return expr.getBuiltinCallee();
#else
return expr.isBuiltinCall();
#endif
}
inline unsigned getCustomDiagID(
clang::DiagnosticsEngine & engine, clang::DiagnosticsEngine::Level L,
llvm::StringRef FormatString)
{
#if CLANG_VERSION >= 30500
return engine.getDiagnosticIDs()->getCustomDiagID(
static_cast<clang::DiagnosticIDs::Level>(L), FormatString);
#else
return engine.getCustomDiagID(L, FormatString);
#endif
}
inline std::unique_ptr<llvm::raw_fd_ostream> create_raw_fd_ostream(
char const * Filename, std::string & ErrorInfo)
{
#if CLANG_VERSION >= 30600
std::error_code ec;
std::unique_ptr<llvm::raw_fd_ostream> s(
new llvm::raw_fd_ostream(Filename, ec, llvm::sys::fs::F_None));
ErrorInfo = ec ? "error: " + ec.message() : std::string();
return s;
#elif CLANG_VERSION >= 30500
return std::unique_ptr<llvm::raw_fd_ostream>(
new llvm::raw_fd_ostream(Filename, ErrorInfo, llvm::sys::fs::F_None));
#else
return std::unique_ptr<llvm::raw_fd_ostream>(
new llvm::raw_fd_ostream(Filename, ErrorInfo));
#endif
}
#if CLANG_VERSION >= 30700
using MacroDefinitionParam = clang::MacroDefinition const &;
#else
using MacroDefinitionParam = clang::MacroDirective const *;
#endif
inline void addPPCallbacks(
clang::Preprocessor & preprocessor, clang::PPCallbacks * C)
{
#if CLANG_VERSION >= 30600
preprocessor.addPPCallbacks(std::unique_ptr<clang::PPCallbacks>(C));
#else
preprocessor.addPPCallbacks(C);
#endif
}
inline bool isMacroArgExpansion(
clang::CompilerInstance& compiler, clang::SourceLocation location,
clang::SourceLocation * startLocation)
{
#if CLANG_VERSION >= 30900
return compiler.getSourceManager().isMacroArgExpansion(
location, startLocation);
#else
bool b = compiler.getSourceManager().isMacroArgExpansion(location);
if (b) {
*startLocation = compiler.getSourceManager()
.getSLocEntry(compiler.getSourceManager().getFileID(location))
.getExpansion().getExpansionLocStart();
}
return b;
#endif
}
inline auto getAsTagDecl(clang::Type const& t) -> clang::TagDecl *
{
#if CLANG_VERSION >= 30500
// TODO not sure if it works with clang 3.6, trunk is known to work
return t.getAsTagDecl();
#else
return t.getAs<clang::TagType>()->getDecl();
#endif
}
inline bool isStdNamespace(clang::DeclContext const & context) {
#if CLANG_VERSION >= 30500
return context.isStdNamespace();
#else
// cf. lib/AST/DeclBase.cpp:
if (!context.isNamespace()) {
return false;
}
const clang::NamespaceDecl *ND = clang::cast<clang::NamespaceDecl>(
&context);
if (ND->isInline()) {
return isStdNamespace(*ND->getParent());
}
if (!context.getParent()->getRedeclContext()->isTranslationUnit()) {
return false;
}
const clang::IdentifierInfo *II = ND->getIdentifier();
return II && II->isStr("std");
#endif
}
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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