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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* 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/.
*/
#include <cassert>
#include <memory>
#include "plugin.hxx"
namespace {
class OslEndian: public loplugin::Plugin, public PPCallbacks {
public:
explicit OslEndian(loplugin::InstantiationData const & data): Plugin(data) {
compiler.getPreprocessor().addPPCallbacks(std::unique_ptr<PPCallbacks>(this));
}
enum { isPPCallback = true };
private:
void run() override {}
virtual void FileChanged(SourceLocation, FileChangeReason, SrcMgr::CharacteristicKind, FileID) override {
if(!startChecked) {
// With precompiled headers MacroDefined() would not be called, so check already at the very
// start whether the macros exist.
startChecked = true;
if(const MacroInfo* macroBig = compiler.getPreprocessor().getMacroInfo(
&compiler.getPreprocessor().getIdentifierTable().get("OSL_BIGENDIAN"))) {
definedBig_ = macroBig->getDefinitionLoc();
}
if(const MacroInfo* macroLit = compiler.getPreprocessor().getMacroInfo(
&compiler.getPreprocessor().getIdentifierTable().get("OSL_LITENDIAN"))) {
definedLit_ = macroLit->getDefinitionLoc();
}
}
}
void MacroDefined(Token const & MacroNameTok, MacroDirective const *)
override
{
auto id = MacroNameTok.getIdentifierInfo()->getName();
if (id == "OSL_BIGENDIAN") {
if (definedLit_.isValid()) {
report(
DiagnosticsEngine::Warning,
"macro %0 defined in addition to 'OSL_LITENDIAN'",
MacroNameTok.getLocation())
<< MacroNameTok.getIdentifierInfo();
report(
DiagnosticsEngine::Note,
"conflicting macro definition is here", definedLit_);
}
definedBig_ = MacroNameTok.getLocation();
assert(definedBig_.isValid());
} else if (id == "OSL_LITENDIAN") {
if (definedBig_.isValid()) {
report(
DiagnosticsEngine::Warning,
"macro %0 defined in addition to 'OSL_BIGENDIAN'",
MacroNameTok.getLocation())
<< MacroNameTok.getIdentifierInfo();
report(
DiagnosticsEngine::Note,
"conflicting macro definition is here", definedBig_);
}
definedLit_ = MacroNameTok.getLocation();
assert(definedLit_.isValid());
}
}
void MacroUndefined(
Token const & MacroNameTok, MacroDefinition const &, MacroDirective const *) override
{
auto id = MacroNameTok.getIdentifierInfo()->getName();
if (id == "OSL_BIGENDIAN" || id == "OSL_LITENDIAN") {
report(
DiagnosticsEngine::Warning, "macro %0 undefinition",
MacroNameTok.getLocation())
<< MacroNameTok.getIdentifierInfo();
}
}
void Defined(
Token const & MacroNameTok, MacroDefinition const &, SourceRange)
override
{
check(MacroNameTok);
}
void Ifdef(
SourceLocation, Token const & MacroNameTok,
MacroDefinition const &) override
{
check(MacroNameTok);
}
void Ifndef(
SourceLocation, Token const & MacroNameTok,
MacroDefinition const &) override
{
check(MacroNameTok);
}
void check(Token const & macro) const {
auto id = macro.getIdentifierInfo()->getName();
if ((id == "OSL_BIGENDIAN" || id == "OSL_LITENDIAN")
&& definedBig_.isInvalid() && definedLit_.isInvalid())
{
report(
DiagnosticsEngine::Warning,
"definition of macro %0 checked but 'osl/endian.h' is not"
" included",
macro.getLocation())
<< macro.getIdentifierInfo();
}
}
SourceLocation definedBig_;
SourceLocation definedLit_;
bool startChecked = false;
};
loplugin::Plugin::Registration<OslEndian> X("oslendian");
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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