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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 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 Digia. For licensing terms and
** conditions see http://www.qt.io/licensing. For further information
** use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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 "qmljspropertyreader.h"
#include "qmljsdocument.h"
#include <qmljs/parser/qmljsast_p.h>
#include <qmljs/qmljsutils.h>
#include <QLinearGradient>
namespace QmlJS {
using namespace AST;
namespace {
static inline QString deEscape(const QString &value)
{
QString result = value;
result.replace(QLatin1String("\\\\"), QLatin1String("\\"));
result.replace(QLatin1String("\\\""), QLatin1String("\""));
result.replace(QLatin1String("\\\t"), QLatin1String("\t"));
result.replace(QLatin1String("\\\r"), QLatin1String("\r"));
result.replace(QLatin1String("\\\n"), QLatin1String("\n"));
return result;
}
static inline QString stripQuotes(const QString &str)
{
if ((str.startsWith(QLatin1Char('"')) && str.endsWith(QLatin1Char('"')))
|| (str.startsWith(QLatin1Char('\'')) && str.endsWith(QLatin1Char('\''))))
return str.mid(1, str.length() - 2);
return str;
}
static bool isLiteralValue(ExpressionNode *expr)
{
if (cast<NumericLiteral*>(expr))
return true;
else if (cast<StringLiteral*>(expr))
return true;
else if (UnaryPlusExpression *plusExpr = cast<UnaryPlusExpression*>(expr))
return isLiteralValue(plusExpr->expression);
else if (UnaryMinusExpression *minusExpr = cast<UnaryMinusExpression*>(expr))
return isLiteralValue(minusExpr->expression);
else if (cast<TrueLiteral*>(expr))
return true;
else if (cast<FalseLiteral*>(expr))
return true;
else
return false;
}
static inline bool isLiteralValue(UiScriptBinding *script)
{
if (!script || !script->statement)
return false;
ExpressionStatement *exprStmt = cast<ExpressionStatement *>(script->statement);
if (exprStmt)
return isLiteralValue(exprStmt->expression);
else
return false;
}
static inline QString textAt(const Document::Ptr doc,
const SourceLocation &from,
const SourceLocation &to)
{
return doc->source().mid(from.offset, to.end() - from.begin());
}
static bool isEnum(AST::Statement *ast);
bool isEnum(AST::ExpressionNode *ast)
{
if (!ast)
return false;
if (FieldMemberExpression *memberExpr = cast<AST::FieldMemberExpression*>(ast))
return isEnum(memberExpr->base);
else if (cast<IdentifierExpression*>(ast))
return true;
else
return false;
}
static bool isEnum(AST::Statement *ast)
{
if (!ast)
return false;
if (ExpressionStatement *exprStmt = cast<ExpressionStatement*>(ast))
return isEnum(exprStmt->expression);
return false;
}
static QString cleanupSemicolon(const QString &str)
{
QString out = str;
while (out.endsWith(QLatin1Char(';')))
out.chop(1);
return out;
}
} // anonymous namespace
PropertyReader::PropertyReader(Document::Ptr doc, AST::UiObjectInitializer *ast)
{
m_ast = ast;
m_doc = doc;
if (!m_doc)
return;
for (UiObjectMemberList *members = ast->members; members; members = members->next) {
UiObjectMember *member = members->member;
if (UiScriptBinding *property = AST::cast<UiScriptBinding *>(member)) {
if (!property->qualifiedId)
continue; // better safe than sorry.
const QString propertyName = toString(property->qualifiedId);
const QString astValue = cleanupSemicolon(textAt(doc,
property->statement->firstSourceLocation(),
property->statement->lastSourceLocation()));
if (isLiteralValue(property)) {
m_properties.insert(propertyName, QVariant(deEscape(stripQuotes(astValue))));
} else if (isEnum(property->statement)) { //enum
m_properties.insert(propertyName, QVariant(astValue));
m_bindingOrEnum.append(propertyName);
}
} else if (UiObjectDefinition *objectDefinition = cast<UiObjectDefinition *>(member)) { //font { bold: true }
const QString propertyName = objectDefinition->qualifiedTypeNameId->name.toString();
if (!propertyName.isEmpty() && !propertyName.at(0).isUpper()) {
for (UiObjectMemberList *iter = objectDefinition->initializer->members; iter; iter = iter->next) {
UiObjectMember *objectMember = iter->member;
if (UiScriptBinding *property = cast<UiScriptBinding *>(objectMember)) {
const QString propertyNamePart2 = toString(property->qualifiedId);
const QString astValue = cleanupSemicolon(textAt(doc,
property->statement->firstSourceLocation(),
property->statement->lastSourceLocation()));
if (isLiteralValue(property)) {
m_properties.insert(propertyName + QLatin1Char('.') + propertyNamePart2,
QVariant(deEscape(stripQuotes(astValue))));
} else if (isEnum(property->statement)) { //enum
m_properties.insert(propertyName + QLatin1Char('.') + propertyNamePart2, QVariant(astValue));
m_bindingOrEnum.append(propertyName + QLatin1Char('.') + propertyNamePart2);
}
}
}
}
} else if (UiObjectBinding* objectBinding = cast<UiObjectBinding *>(member)) {
UiObjectInitializer *initializer = objectBinding->initializer;
const QString astValue = cleanupSemicolon(textAt(doc,
initializer->lbraceToken,
initializer->rbraceToken));
const QString propertyName = objectBinding->qualifiedId->name.toString();
m_properties.insert(propertyName, QVariant(astValue));
}
}
}
QLinearGradient PropertyReader::parseGradient(const QString &propertyName, bool *isBound) const
{
if (!m_doc)
return QLinearGradient();
*isBound = false;
for (UiObjectMemberList *members = m_ast->members; members; members = members->next) {
UiObjectMember *member = members->member;
if (UiObjectBinding* objectBinding = cast<UiObjectBinding *>(member)) {
UiObjectInitializer *initializer = objectBinding->initializer;
const QString astValue = cleanupSemicolon(textAt(m_doc,
initializer->lbraceToken,
initializer->rbraceToken));
const QString objectPropertyName = objectBinding->qualifiedId->name.toString();
const QStringRef typeName = objectBinding->qualifiedTypeNameId->name;
if (objectPropertyName == propertyName && typeName.contains(QLatin1String("Gradient"))) {
QLinearGradient gradient;
QVector<QGradientStop> stops;
for (UiObjectMemberList *members = initializer->members; members; members = members->next) {
UiObjectMember *member = members->member;
if (UiObjectDefinition *objectDefinition = cast<UiObjectDefinition *>(member)) {
PropertyReader localParser(m_doc, objectDefinition->initializer);
if (localParser.hasProperty(QLatin1String("color")) && localParser.hasProperty(QLatin1String("position"))) {
QColor color = QmlJS::toQColor(localParser.readProperty(QLatin1String("color")).toString());
qreal position = localParser.readProperty(QLatin1String("position")).toReal();
if (localParser.isBindingOrEnum(QLatin1String("color")) || localParser.isBindingOrEnum(QLatin1String("position")))
*isBound = true;
stops.append( QPair<qreal, QColor>(position, color));
}
}
}
gradient.setStops(stops);
return gradient;
}
}
}
return QLinearGradient();
}
} //QmlJS
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