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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "clangquery.h"
#include "sourcelocationsutils.h"
#include "sourcerangeextractor.h"
#include <sourcerangescontainer.h>
#include <stringcache.h>
#include <QTime>
#include <clang/ASTMatchers/ASTMatchers.h>
#include <clang/ASTMatchers/ASTMatchFinder.h>
#include <clang/ASTMatchers/Dynamic/Diagnostics.h>
#include <clang/ASTMatchers/Dynamic/Parser.h>
using clang::ast_matchers::dynamic::Diagnostics;
using clang::ast_matchers::dynamic::Parser;
using clang::ast_matchers::BoundNodes;
using clang::ast_matchers::MatchFinder;
namespace ClangBackEnd {
struct CollectBoundNodes : MatchFinder::MatchCallback {
std::vector<BoundNodes> &Bindings;
CollectBoundNodes(std::vector<BoundNodes> &Bindings) : Bindings(Bindings) {}
void run(const MatchFinder::MatchResult &Result) override {
Bindings.push_back(Result.Nodes);
}
};
ClangQuery::ClangQuery(FilePathCachingInterface &filePathCache,
Utils::SmallString &&query)
: m_query(std::move(query)),
m_filePathCache(filePathCache)
{
}
void ClangQuery::setQuery(Utils::SmallString &&query)
{
this->m_query = std::move(query);
}
void ClangQuery::findLocations()
{
auto tool = createTool();
std::vector<std::unique_ptr<clang::ASTUnit>> asts;
tool.buildASTs(asts);
std::for_each (std::make_move_iterator(asts.begin()),
std::make_move_iterator(asts.end()),
[&] (std::unique_ptr<clang::ASTUnit> &&ast) {
Diagnostics diagnostics;
auto optionalMatcher = Parser::parseMatcherExpression({m_query.data(), m_query.size()},
nullptr,
&diagnostics);
parseDiagnostics(diagnostics);
matchLocation(optionalMatcher, std::move(ast));
});
}
SourceRangesContainer ClangQuery::takeSourceRanges()
{
return std::move(m_sourceRangesContainer);
}
DynamicASTMatcherDiagnosticContainers ClangQuery::takeDiagnosticContainers()
{
return std::move(m_diagnosticContainers_);
}
namespace {
V2::SourceRangeContainer convertToContainer(const clang::ast_matchers::dynamic::SourceRange sourceRange)
{
return V2::SourceRangeContainer({1, 0},
sourceRange.Start.Line,
sourceRange.Start.Column,
0,
sourceRange.End.Line,
sourceRange.End.Column,
0);
}
#define ERROR_RETURN_CASE(name) \
case Diagnostics::ET_##name: return ClangQueryDiagnosticErrorType::name;
ClangQueryDiagnosticErrorType convertToErrorType(Diagnostics::ErrorType clangErrorType)
{
switch (clangErrorType) {
ERROR_RETURN_CASE(None)
ERROR_RETURN_CASE(RegistryMatcherNotFound)
ERROR_RETURN_CASE(RegistryWrongArgCount)
ERROR_RETURN_CASE(RegistryWrongArgType)
ERROR_RETURN_CASE(RegistryNotBindable)
ERROR_RETURN_CASE(RegistryAmbiguousOverload)
ERROR_RETURN_CASE(RegistryValueNotFound)
ERROR_RETURN_CASE(ParserStringError)
ERROR_RETURN_CASE(ParserNoOpenParen)
ERROR_RETURN_CASE(ParserNoCloseParen)
ERROR_RETURN_CASE(ParserNoComma)
ERROR_RETURN_CASE(ParserNoCode)
ERROR_RETURN_CASE(ParserNotAMatcher)
ERROR_RETURN_CASE(ParserInvalidToken)
ERROR_RETURN_CASE(ParserMalformedBindExpr)
ERROR_RETURN_CASE(ParserTrailingCode)
ERROR_RETURN_CASE(ParserUnsignedError)
ERROR_RETURN_CASE(ParserOverloadedType)
}
Q_UNREACHABLE();
}
#define CONTEXT_RETURN_CASE(name) \
case Diagnostics::CT_##name: return ClangQueryDiagnosticContextType::name;
ClangQueryDiagnosticContextType convertToContextType(Diagnostics::ContextType clangContextType)
{
switch (clangContextType) {
CONTEXT_RETURN_CASE(MatcherArg)
CONTEXT_RETURN_CASE(MatcherConstruct)
}
Q_UNREACHABLE();
}
}
void ClangQuery::parseDiagnostics(const clang::ast_matchers::dynamic::Diagnostics &diagnostics)
{
auto errors = diagnostics.errors();
for (const auto &errorContent : errors) {
m_diagnosticContainers_.emplace_back();
DynamicASTMatcherDiagnosticContainer &diagnosticContainer = m_diagnosticContainers_.back();
for (const auto &message : errorContent.Messages) {
diagnosticContainer.insertMessage(convertToContainer(message.Range),
convertToErrorType(message.Type),
Utils::SmallStringVector(message.Args));
}
for (const auto &message : errorContent.ContextStack) {
diagnosticContainer.insertContext(convertToContainer(message.Range),
convertToContextType(message.Type),
Utils::SmallStringVector(message.Args));
}
}
}
namespace {
std::vector<clang::SourceRange> generateSourceRangesFromMatches(const std::vector<BoundNodes> &matches)
{
std::vector<clang::SourceRange> sourceRanges;
sourceRanges.reserve(matches.size());
for (const auto boundNodes : matches) {
for (const auto &mapEntry : boundNodes.getMap()) {
const auto sourceRange = mapEntry.second.getSourceRange();
if (sourceRange.isValid())
sourceRanges.push_back(sourceRange);
}
}
return sourceRanges;
}
}
void ClangQuery::matchLocation(
const llvm::Optional< clang::ast_matchers::internal::DynTypedMatcher> &optionalStartMatcher,
std::unique_ptr<clang::ASTUnit> ast)
{
if (optionalStartMatcher) {
auto matcher = *optionalStartMatcher;
auto optionalMatcher = matcher.tryBind("root");
matcher = *optionalMatcher;
MatchFinder finder;
std::vector<BoundNodes> matches;
CollectBoundNodes collectBoundNodes(matches);
finder.addDynamicMatcher(matcher, &collectBoundNodes);
finder.matchAST(ast->getASTContext());
auto sourceRanges = generateSourceRangesFromMatches(matches);
SourceRangeExtractor extractor(ast->getSourceManager(),
ast->getLangOpts(),
m_filePathCache,
m_sourceRangesContainer);
extractor.addSourceRanges(sourceRanges);
}
}
} // namespace ClangBackEnd
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