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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Build Suite.
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "itemreader.h"
#include "asttools.h"
#include "itemreaderastvisitor.h"
#include <logging/translator.h>
#include <parser/qmljsengine_p.h>
#include <parser/qmljslexer_p.h>
#include <parser/qmljsparser_p.h>
#include <tools/error.h>
#include <QExplicitlySharedDataPointer>
#include <QFile>
#include <QFileInfo>
#include <QSharedData>
#include <QTextStream>
namespace qbs {
namespace Internal {
class ASTCacheValueData : public QSharedData
{
Q_DISABLE_COPY(ASTCacheValueData)
public:
ASTCacheValueData()
: ast(0)
, processing(false)
{
}
QString code;
QbsQmlJS::Engine engine;
QbsQmlJS::AST::UiProgram *ast;
bool processing;
};
class ASTCacheValue
{
public:
ASTCacheValue()
: d(new ASTCacheValueData)
{
}
ASTCacheValue(const ASTCacheValue &other)
: d(other.d)
{
}
void setProcessingFlag(bool b) { d->processing = b; }
bool isProcessing() const { return d->processing; }
void setCode(const QString &code) { d->code = code; }
QString code() const { return d->code; }
QbsQmlJS::Engine *engine() const { return &d->engine; }
void setAst(QbsQmlJS::AST::UiProgram *ast) { d->ast = ast; }
QbsQmlJS::AST::UiProgram *ast() const { return d->ast; }
bool isValid() const { return d->ast; }
private:
QExplicitlySharedDataPointer<ASTCacheValueData> d;
};
class ItemReader::ASTCache : public QHash<QString, ASTCacheValue> {};
ItemReader::ItemReader(BuiltinDeclarations *builtins, const Logger &logger)
: m_pool(0)
, m_builtins(builtins)
, m_logger(logger)
, m_astCache(new ASTCache)
{
}
ItemReader::~ItemReader()
{
delete m_astCache;
}
void ItemReader::setSearchPaths(const QStringList &searchPaths)
{
m_searchPaths = searchPaths;
}
void ItemReader::pushExtraSearchPaths(const QStringList &extraSearchPaths)
{
m_extraSearchPaths.push(extraSearchPaths);
}
void ItemReader::popExtraSearchPaths()
{
m_extraSearchPaths.pop();
}
QStringList ItemReader::searchPaths() const
{
QStringList paths = m_searchPaths;
if (!m_extraSearchPaths.isEmpty())
paths += m_extraSearchPaths.top();
return paths;
}
void ItemReader::cacheDirectoryEntries(const QString &dirPath, const QStringList &entries)
{
m_directoryEntries.insert(dirPath, entries);
}
bool ItemReader::findDirectoryEntries(const QString &dirPath, QStringList *entries) const
{
const QHash<QString, QStringList>::ConstIterator it = m_directoryEntries.constFind(dirPath);
if (it == m_directoryEntries.constEnd())
return false;
*entries = it.value();
return true;
}
Item *ItemReader::readFile(const QString &filePath)
{
return internalReadFile(filePath).rootItem;
}
QSet<QString> ItemReader::filesRead() const
{
return m_filesRead;
}
ItemReaderResult ItemReader::internalReadFile(const QString &filePath)
{
ASTCacheValue &cacheValue = (*m_astCache)[filePath];
if (cacheValue.isValid()) {
if (Q_UNLIKELY(cacheValue.isProcessing()))
throw ErrorInfo(Tr::tr("Loop detected when importing '%1'.").arg(filePath));
} else {
QFile file(filePath);
if (Q_UNLIKELY(!file.open(QFile::ReadOnly)))
throw ErrorInfo(Tr::tr("Cannot open '%1'.").arg(filePath));
m_filesRead.insert(filePath);
const QString code = QTextStream(&file).readAll();
QbsQmlJS::Lexer lexer(cacheValue.engine());
lexer.setCode(code, 1);
QbsQmlJS::Parser parser(cacheValue.engine());
file.close();
if (!parser.parse()) {
QList<QbsQmlJS::DiagnosticMessage> parserMessages = parser.diagnosticMessages();
if (Q_UNLIKELY(!parserMessages.isEmpty())) {
ErrorInfo err;
foreach (const QbsQmlJS::DiagnosticMessage &msg, parserMessages)
err.append(msg.message, toCodeLocation(filePath, msg.loc));
throw err;
}
}
cacheValue.setCode(code);
cacheValue.setAst(parser.ast());
}
ItemReaderResult result;
ItemReaderASTVisitor itemReader(this, &result);
itemReader.setFilePath(QFileInfo(filePath).absoluteFilePath());
itemReader.setSourceCode(cacheValue.code());
cacheValue.setProcessingFlag(true);
cacheValue.ast()->accept(&itemReader);
cacheValue.setProcessingFlag(false);
return result;
}
} // namespace Internal
} // namespace qbs
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