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Set up the scope chain.

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This commit is contained in:
Roberto Raggi
2010-01-24 18:11:25 +01:00
parent b4a901aa1e
commit 24f5a9c0e4
3 changed files with 52 additions and 39 deletions
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87
src/plugins/qmljseditor/qmlcodecompletion.cpp
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@@ -308,7 +308,7 @@ protected:
if (! ast->name)
return false;
_value = _scope->property(ast->name->asString());
_value = _scope->lookup(ast->name->asString());
return false;
}
@@ -345,11 +345,12 @@ class EnumerateProperties: private Interpreter::MemberProcessor
QHash<QString, const Interpreter::Value *> _properties;
public:
QHash<QString, const Interpreter::Value *> operator()(const Interpreter::Value *value)
QHash<QString, const Interpreter::Value *> operator()(const Interpreter::Value *value,
bool lookAtScope = false)
{
_processed.clear();
_properties.clear();
enumerateProperties(value);
enumerateProperties(value, lookAtScope);
return _properties;
}
@@ -360,22 +361,25 @@ private:
return true;
}
void enumerateProperties(const Interpreter::Value *value)
void enumerateProperties(const Interpreter::Value *value, bool lookAtScope)
{
if (! value)
return;
else if (const Interpreter::ObjectValue *object = value->asObjectValue()) {
enumerateProperties(object);
enumerateProperties(object, lookAtScope);
}
}
void enumerateProperties(const Interpreter::ObjectValue *object)
void enumerateProperties(const Interpreter::ObjectValue *object, bool lookAtScope)
{
if (! object || _processed.contains(object))
return;
_processed.insert(object);
enumerateProperties(object->prototype());
enumerateProperties(object->prototype(), /* lookAtScope = */ false);
if (lookAtScope)
enumerateProperties(object->scope(), /* lookAtScope = */ true);
object->processMembers(this);
}
@@ -662,33 +666,25 @@ int QmlCodeCompletion::startCompletion(TextEditor::ITextEditable *editor)
return -1;
m_startPosition = editor->position();
const QString fileName = editor->file()->fileName();
while (editor->characterAt(m_startPosition - 1).isLetterOrNumber() || editor->characterAt(m_startPosition - 1) == QLatin1Char('_'))
while (editor->characterAt(m_startPosition - 1).isLetterOrNumber() ||
editor->characterAt(m_startPosition - 1) == QLatin1Char('_'))
--m_startPosition;
m_completions.clear();
QmlJS::Document::Ptr qmlDocument = edit->qmlDocument();
const QmlJS::Snapshot &snapshot = m_modelManager->snapshot();
if (! qmlDocument)
qmlDocument = snapshot.value(qmlDocument->fileName());
QmlJS::Snapshot snapshot = m_modelManager->snapshot();
Document::Ptr qmlDocument = snapshot.document(fileName);
const QFileInfo currentFileInfo(qmlDocument->fileName());
const QString currentFilePath = currentFileInfo.absolutePath();
const QIcon typeIcon = iconForColor(Qt::yellow);
const QIcon componentIcon = iconForColor(Qt::yellow);
const QIcon symbolIcon = iconForColor(Qt::darkCyan);
Interpreter::Engine interp;
if (qmlDocument && qmlDocument->qmlProgram()) {
const Interpreter::ObjectValue *parentItem = 0;
parentItem = interp.newQmlObject(QLatin1String("Item")); // ### TODO: find the parent item.
interp.globalObject()->setProperty(QLatin1String("parent"), parentItem);
}
foreach (Document::Ptr doc, snapshot) {
const QFileInfo fileInfo(doc->fileName());
@@ -710,6 +706,7 @@ int QmlCodeCompletion::startCompletion(TextEditor::ITextEditable *editor)
if (symbol->parentNode()) {
const QString component = symbol->parentNode()->name();
if (const Interpreter::ObjectValue *object = interp.newQmlObject(component))
interp.globalObject()->setProperty(id, object);
}
@@ -717,12 +714,29 @@ int QmlCodeCompletion::startCompletion(TextEditor::ITextEditable *editor)
}
}
// Set up the current scope chain.
Interpreter::ObjectValue *scope = interp.newObject(/* prototype = */ 0);
// ### FIXME: get the declaring item
Interpreter::ObjectValue *declaringItem = interp.newQmlObject(QLatin1String("Item"));
scope->setScope(declaringItem);
declaringItem->setScope(interp.globalObject());
if (qmlDocument && qmlDocument->qmlProgram()) {
const Interpreter::ObjectValue *parentItem = 0;
const QString declaringItem = QLatin1String("Item"); // ### FIXME: resolve the parent of the declaring item
parentItem = interp.newQmlObject(declaringItem);
scope->setProperty(QLatin1String("parent"), parentItem);
}
// Search for the operator that triggered the completion.
QChar completionOperator;
if (m_startPosition > 0)
completionOperator = editor->characterAt(m_startPosition - 1);
if (completionOperator.isSpace() || completionOperator.isNull()) {
// Add the visible components to the completion box.
if (completionOperator.isSpace() || completionOperator.isNull()) { // It's a global completion.
// Process the visible user defined components.
foreach (QmlJS::Document::Ptr doc, snapshot) {
const QFileInfo fileInfo(doc->fileName());
@@ -731,23 +745,17 @@ int QmlCodeCompletion::startCompletion(TextEditor::ITextEditable *editor)
else if (fileInfo.absolutePath() != currentFilePath) // ### FIXME includ `imported' components
continue;
const QString typeName = fileInfo.baseName();
if (typeName.isEmpty())
continue;
if (typeName.at(0).isUpper()) {
const QString componentName = fileInfo.baseName();
if (! componentName.isEmpty() && componentName.at(0).isUpper()) {
TextEditor::CompletionItem item(this);
item.text = typeName;
item.icon = typeIcon;
item.text = componentName;
item.icon = componentIcon;
m_completions.append(item);
}
}
// ### set up the current scope chain.
const Interpreter::ObjectValue *scope = interp.globalObject();
EnumerateProperties enumerateProperties;
QHashIterator<QString, const Interpreter::Value *> it(enumerateProperties(scope));
QHashIterator<QString, const Interpreter::Value *> it(enumerateProperties(scope, /* lookAtScope = */ true));
while (it.hasNext()) {
it.next();
@@ -759,22 +767,25 @@ int QmlCodeCompletion::startCompletion(TextEditor::ITextEditable *editor)
}
else if (completionOperator == QLatin1Char('.') || completionOperator == QLatin1Char('(')) {
ExpressionUnderCursor expressionUnderCursor;
// Look at the expression under cursor.
QTextCursor tc = edit->textCursor();
tc.setPosition(m_startPosition - 1);
ExpressionUnderCursor expressionUnderCursor;
const QString expression = expressionUnderCursor(tc);
//qDebug() << "expression:" << expression;
// Wrap the expression in a QML document.
QmlJS::Document::Ptr exprDoc = Document::create(QLatin1String("<expression>"));
exprDoc->setSource(expression);
exprDoc->parseExpression();
if (exprDoc->ast()) {
Evaluate evaluate(&interp);
// ### set up the scope chain
evaluate.setScope(scope);
// ### TODO: remove me. This is just a quick and dirty hack to get some completion
// for the property definitions.
SearchPropertyDefinitions searchPropertyDefinitions;
const QList<AST::UiPublicMember *> properties = searchPropertyDefinitions(qmlDocument);
@@ -785,6 +796,7 @@ int QmlCodeCompletion::startCompletion(TextEditor::ITextEditable *editor)
const QString propName = prop->name->asString();
const QString propType = prop->memberType->asString();
// ### TODO: generalize
if (propType == QLatin1String("string"))
interp.globalObject()->setProperty(propName, interp.stringValue());
else if (propType == QLatin1String("bool"))
@@ -793,6 +805,7 @@ int QmlCodeCompletion::startCompletion(TextEditor::ITextEditable *editor)
interp.globalObject()->setProperty(propName, interp.numberValue());
}
// Evaluate the expression under cursor.
const Interpreter::Value *value = interp.convertToObject(evaluate(exprDoc->ast()));
//qDebug() << "type:" << interp.typeId(value);