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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "firstdefinitionfinder.h"
#include <qmljs/parser/qmljsast_p.h>
#include <qmljs/parser/qmljsengine_p.h>
#include <QDebug>
using namespace QmlDesigner;
FirstDefinitionFinder::FirstDefinitionFinder(const QString &text)
: m_doc(QmlJS::Document::create(Utils::FilePath::fromString("<internal>"), QmlJS::Dialect::Qml))
{
m_doc->setSource(text);
bool ok = m_doc->parseQml();
if (!ok) {
qDebug() << text;
const QList<QmlJS::DiagnosticMessage> messages = m_doc->diagnosticMessages();
for (const QmlJS::DiagnosticMessage &message : messages)
qDebug() << message.message;
}
Q_ASSERT(ok);
}
/*!
Finds the first object definition inside the object specified by \a offset.
Returns the offset of the first object definition.
*/
qint32 FirstDefinitionFinder::operator()(quint32 offset)
{
m_offset = offset;
m_firstObjectDefinition = nullptr;
QmlJS::AST::Node::accept(m_doc->qmlProgram(), this);
if (!m_firstObjectDefinition)
return -1;
return m_firstObjectDefinition->firstSourceLocation().offset;
}
void FirstDefinitionFinder::extractFirstObjectDefinition(QmlJS::AST::UiObjectInitializer* ast)
{
if (!ast)
return;
for (QmlJS::AST::UiObjectMemberList *iter = ast->members; iter; iter = iter->next) {
if (auto def = QmlJS::AST::cast<QmlJS::AST::UiObjectDefinition*>(iter->member))
m_firstObjectDefinition = def;
}
}
bool FirstDefinitionFinder::visit(QmlJS::AST::UiObjectBinding *ast)
{
if (ast->qualifiedTypeNameId && ast->qualifiedTypeNameId->identifierToken.isValid()) {
const quint32 start = ast->qualifiedTypeNameId->identifierToken.offset;
if (start == m_offset) {
extractFirstObjectDefinition(ast->initializer);
return false;
}
}
return true;
}
bool FirstDefinitionFinder::visit(QmlJS::AST::UiObjectDefinition *ast)
{
const quint32 start = ast->firstSourceLocation().offset;
if (start == m_offset) {
extractFirstObjectDefinition(ast->initializer);
return false;
}
return true;
}
bool FirstDefinitionFinder::visit(QmlJS::AST::TemplateLiteral *ast)
{
QmlJS::AST::Node::accept(ast->expression, this);
return true;
}
void FirstDefinitionFinder::throwRecursionDepthError()
{
qWarning("Warning: Hit maximum recursion depth while visiting the AST in FirstDefinitionFinder");
}
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