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Diffstat (limited to 'src/declarative/qml/qdeclarativescriptparser.cpp')
| -rw-r--r-- | src/declarative/qml/qdeclarativescriptparser.cpp | 1206 |
1 files changed, 1206 insertions, 0 deletions
diff --git a/src/declarative/qml/qdeclarativescriptparser.cpp b/src/declarative/qml/qdeclarativescriptparser.cpp new file mode 100644 index 0000000000..e04cfc52af --- /dev/null +++ b/src/declarative/qml/qdeclarativescriptparser.cpp @@ -0,0 +1,1206 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** 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, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "private/qdeclarativescriptparser_p.h" + +#include "private/qdeclarativeparser_p.h" +#include "parser/qdeclarativejsengine_p.h" +#include "parser/qdeclarativejsparser_p.h" +#include "parser/qdeclarativejslexer_p.h" +#include "parser/qdeclarativejsnodepool_p.h" +#include "parser/qdeclarativejsastvisitor_p.h" +#include "parser/qdeclarativejsast_p.h" +#include "private/qdeclarativerewrite_p.h" + +#include <QStack> +#include <QCoreApplication> +#include <QtDebug> + +QT_BEGIN_NAMESPACE + +using namespace QDeclarativeJS; +using namespace QDeclarativeParser; + +namespace { + +class ProcessAST: protected AST::Visitor +{ + struct State { + State() : object(0), property(0) {} + State(QDeclarativeParser::Object *o) : object(o), property(0) {} + State(QDeclarativeParser::Object *o, Property *p) : object(o), property(p) {} + + QDeclarativeParser::Object *object; + Property *property; + }; + + struct StateStack : public QStack<State> + { + void pushObject(QDeclarativeParser::Object *obj) + { + push(State(obj)); + } + + void pushProperty(const QString &name, const LocationSpan &location) + { + const State &state = top(); + if (state.property) { + State s(state.property->getValue(location), + state.property->getValue(location)->getProperty(name.toUtf8())); + s.property->location = location; + push(s); + } else { + State s(state.object, + state.object->getProperty(name.toUtf8())); + + s.property->location = location; + push(s); + } + } + }; + +public: + ProcessAST(QDeclarativeScriptParser *parser); + virtual ~ProcessAST(); + + void operator()(const QString &code, AST::Node *node); + +protected: + + QDeclarativeParser::Object *defineObjectBinding(AST::UiQualifiedId *propertyName, bool onAssignment, + const QString &objectType, + AST::SourceLocation typeLocation, + LocationSpan location, + AST::UiObjectInitializer *initializer = 0); + + QDeclarativeParser::Variant getVariant(AST::ExpressionNode *expr); + + LocationSpan location(AST::SourceLocation start, AST::SourceLocation end); + LocationSpan location(AST::UiQualifiedId *); + + using AST::Visitor::visit; + using AST::Visitor::endVisit; + + virtual bool visit(AST::UiProgram *node); + virtual bool visit(AST::UiImport *node); + virtual bool visit(AST::UiObjectDefinition *node); + virtual bool visit(AST::UiPublicMember *node); + virtual bool visit(AST::UiObjectBinding *node); + + virtual bool visit(AST::UiScriptBinding *node); + virtual bool visit(AST::UiArrayBinding *node); + virtual bool visit(AST::UiSourceElement *node); + + void accept(AST::Node *node); + + QString asString(AST::UiQualifiedId *node) const; + + const State state() const; + QDeclarativeParser::Object *currentObject() const; + Property *currentProperty() const; + + QString qualifiedNameId() const; + + QString textAt(const AST::SourceLocation &loc) const + { return _contents.mid(loc.offset, loc.length); } + + + QString textAt(const AST::SourceLocation &first, + const AST::SourceLocation &last) const + { return _contents.mid(first.offset, last.offset + last.length - first.offset); } + + QString asString(AST::ExpressionNode *expr) + { + if (! expr) + return QString(); + + return textAt(expr->firstSourceLocation(), expr->lastSourceLocation()); + } + + QString asString(AST::Statement *stmt) + { + if (! stmt) + return QString(); + + QString s = textAt(stmt->firstSourceLocation(), stmt->lastSourceLocation()); + s += QLatin1Char('\n'); + return s; + } + +private: + QDeclarativeScriptParser *_parser; + StateStack _stateStack; + QStringList _scope; + QString _contents; +}; + +ProcessAST::ProcessAST(QDeclarativeScriptParser *parser) + : _parser(parser) +{ +} + +ProcessAST::~ProcessAST() +{ +} + +void ProcessAST::operator()(const QString &code, AST::Node *node) +{ + _contents = code; + accept(node); +} + +void ProcessAST::accept(AST::Node *node) +{ + AST::Node::acceptChild(node, this); +} + +const ProcessAST::State ProcessAST::state() const +{ + if (_stateStack.isEmpty()) + return State(); + + return _stateStack.back(); +} + +QDeclarativeParser::Object *ProcessAST::currentObject() const +{ + return state().object; +} + +Property *ProcessAST::currentProperty() const +{ + return state().property; +} + +QString ProcessAST::qualifiedNameId() const +{ + return _scope.join(QLatin1String("/")); +} + +QString ProcessAST::asString(AST::UiQualifiedId *node) const +{ + QString s; + + for (AST::UiQualifiedId *it = node; it; it = it->next) { + s.append(it->name->asString()); + + if (it->next) + s.append(QLatin1Char('.')); + } + + return s; +} + +QDeclarativeParser::Object * +ProcessAST::defineObjectBinding(AST::UiQualifiedId *propertyName, + bool onAssignment, + const QString &objectType, + AST::SourceLocation typeLocation, + LocationSpan location, + AST::UiObjectInitializer *initializer) +{ + int lastTypeDot = objectType.lastIndexOf(QLatin1Char('.')); + bool isType = !objectType.isEmpty() && + (objectType.at(0).isUpper() || + (lastTypeDot >= 0 && objectType.at(lastTypeDot+1).isUpper())); + + int propertyCount = 0; + for (AST::UiQualifiedId *name = propertyName; name; name = name->next){ + ++propertyCount; + _stateStack.pushProperty(name->name->asString(), + this->location(name)); + } + + if (!onAssignment && propertyCount && currentProperty() && currentProperty()->values.count()) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Property value set multiple times")); + error.setLine(this->location(propertyName).start.line); + error.setColumn(this->location(propertyName).start.column); + _parser->_errors << error; + return 0; + } + + if (!isType) { + + if(propertyCount || !currentObject()) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Expected type name")); + error.setLine(typeLocation.startLine); + error.setColumn(typeLocation.startColumn); + _parser->_errors << error; + return 0; + } + + LocationSpan loc = ProcessAST::location(typeLocation, typeLocation); + if (propertyName) + loc = ProcessAST::location(propertyName); + + _stateStack.pushProperty(objectType, loc); + accept(initializer); + _stateStack.pop(); + + return 0; + + } else { + // Class + + QString resolvableObjectType = objectType; + if (lastTypeDot >= 0) + resolvableObjectType.replace(QLatin1Char('.'),QLatin1Char('/')); + + QDeclarativeParser::Object *obj = new QDeclarativeParser::Object; + + QDeclarativeScriptParser::TypeReference *typeRef = _parser->findOrCreateType(resolvableObjectType); + obj->type = typeRef->id; + + typeRef->refObjects.append(obj); + + // XXX this doesn't do anything (_scope never builds up) + _scope.append(resolvableObjectType); + obj->typeName = qualifiedNameId().toUtf8(); + _scope.removeLast(); + + obj->location = location; + + if (propertyCount) { + Property *prop = currentProperty(); + QDeclarativeParser::Value *v = new QDeclarativeParser::Value; + v->object = obj; + v->location = obj->location; + if (onAssignment) + prop->addOnValue(v); + else + prop->addValue(v); + + while (propertyCount--) + _stateStack.pop(); + + } else { + + if (! _parser->tree()) { + _parser->setTree(obj); + } else { + const State state = _stateStack.top(); + QDeclarativeParser::Value *v = new QDeclarativeParser::Value; + v->object = obj; + v->location = obj->location; + if (state.property) { + state.property->addValue(v); + } else { + Property *defaultProp = state.object->getDefaultProperty(); + if (defaultProp->location.start.line == -1) { + defaultProp->location = v->location; + defaultProp->location.end = defaultProp->location.start; + defaultProp->location.range.length = 0; + } + defaultProp->addValue(v); + } + } + } + + _stateStack.pushObject(obj); + accept(initializer); + _stateStack.pop(); + + return obj; + } +} + +LocationSpan ProcessAST::location(AST::UiQualifiedId *id) +{ + return location(id->identifierToken, id->identifierToken); +} + +LocationSpan ProcessAST::location(AST::SourceLocation start, AST::SourceLocation end) +{ + LocationSpan rv; + rv.start.line = start.startLine; + rv.start.column = start.startColumn; + rv.end.line = end.startLine; + rv.end.column = end.startColumn + end.length - 1; + rv.range.offset = start.offset; + rv.range.length = end.offset + end.length - start.offset; + return rv; +} + +// UiProgram: UiImportListOpt UiObjectMemberList ; +bool ProcessAST::visit(AST::UiProgram *node) +{ + accept(node->imports); + accept(node->members->member); + return false; +} + +// UiImport: T_IMPORT T_STRING_LITERAL ; +bool ProcessAST::visit(AST::UiImport *node) +{ + QString uri; + QDeclarativeScriptParser::Import import; + + if (node->fileName) { + uri = node->fileName->asString(); + + if (uri.endsWith(QLatin1String(".js"))) { + import.type = QDeclarativeScriptParser::Import::Script; + } else { + import.type = QDeclarativeScriptParser::Import::File; + } + } else { + import.type = QDeclarativeScriptParser::Import::Library; + uri = asString(node->importUri); + } + + AST::SourceLocation startLoc = node->importToken; + AST::SourceLocation endLoc = node->semicolonToken; + + // Qualifier + if (node->importId) { + import.qualifier = node->importId->asString(); + if (!import.qualifier.at(0).isUpper()) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Invalid import qualifier ID")); + error.setLine(node->importIdToken.startLine); + error.setColumn(node->importIdToken.startColumn); + _parser->_errors << error; + return false; + } + if (import.qualifier == QLatin1String("Qt")) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Reserved name \"Qt\" cannot be used as an qualifier")); + error.setLine(node->importIdToken.startLine); + error.setColumn(node->importIdToken.startColumn); + _parser->_errors << error; + return false; + } + + // Check for script qualifier clashes + bool isScript = import.type == QDeclarativeScriptParser::Import::Script; + for (int ii = 0; ii < _parser->_imports.count(); ++ii) { + const QDeclarativeScriptParser::Import &other = _parser->_imports.at(ii); + bool otherIsScript = other.type == QDeclarativeScriptParser::Import::Script; + + if ((isScript || otherIsScript) && import.qualifier == other.qualifier) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Script import qualifiers must be unique.")); + error.setLine(node->importIdToken.startLine); + error.setColumn(node->importIdToken.startColumn); + _parser->_errors << error; + return false; + } + } + + } else if (import.type == QDeclarativeScriptParser::Import::Script) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Script import requires a qualifier")); + error.setLine(node->fileNameToken.startLine); + error.setColumn(node->fileNameToken.startColumn); + _parser->_errors << error; + return false; + } + + if (node->versionToken.isValid()) { + import.version = textAt(node->versionToken); + } else if (import.type == QDeclarativeScriptParser::Import::Library) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Library import requires a version")); + error.setLine(node->importIdToken.startLine); + error.setColumn(node->importIdToken.startColumn); + _parser->_errors << error; + return false; + } + + + import.location = location(startLoc, endLoc); + import.uri = uri; + + _parser->_imports << import; + + return false; +} + +bool ProcessAST::visit(AST::UiPublicMember *node) +{ + const struct TypeNameToType { + const char *name; + Object::DynamicProperty::Type type; + const char *qtName; + } propTypeNameToTypes[] = { + { "int", Object::DynamicProperty::Int, "int" }, + { "bool", Object::DynamicProperty::Bool, "bool" }, + { "double", Object::DynamicProperty::Real, "double" }, + { "real", Object::DynamicProperty::Real, "qreal" }, + { "string", Object::DynamicProperty::String, "QString" }, + { "url", Object::DynamicProperty::Url, "QUrl" }, + { "color", Object::DynamicProperty::Color, "QColor" }, + // Internally QTime, QDate and QDateTime are all supported. + // To be more consistent with JavaScript we expose only + // QDateTime as it matches closely with the Date JS type. + // We also call it "date" to match. + // { "time", Object::DynamicProperty::Time, "QTime" }, + // { "date", Object::DynamicProperty::Date, "QDate" }, + { "date", Object::DynamicProperty::DateTime, "QDateTime" }, + { "variant", Object::DynamicProperty::Variant, "QVariant" } + }; + const int propTypeNameToTypesCount = sizeof(propTypeNameToTypes) / + sizeof(propTypeNameToTypes[0]); + + if(node->type == AST::UiPublicMember::Signal) { + const QString name = node->name->asString(); + + Object::DynamicSignal signal; + signal.name = name.toUtf8(); + + AST::UiParameterList *p = node->parameters; + while (p) { + const QString memberType = p->type->asString(); + const char *qtType = 0; + for(int ii = 0; !qtType && ii < propTypeNameToTypesCount; ++ii) { + if(QLatin1String(propTypeNameToTypes[ii].name) == memberType) + qtType = propTypeNameToTypes[ii].qtName; + } + + if (!qtType) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Expected parameter type")); + error.setLine(node->typeToken.startLine); + error.setColumn(node->typeToken.startColumn); + _parser->_errors << error; + return false; + } + + signal.parameterTypes << qtType; + signal.parameterNames << p->name->asString().toUtf8(); + p = p->finish(); + } + + _stateStack.top().object->dynamicSignals << signal; + } else { + const QString memberType = node->memberType->asString(); + const QString name = node->name->asString(); + + bool typeFound = false; + Object::DynamicProperty::Type type; + + if (memberType == QLatin1String("alias")) { + type = Object::DynamicProperty::Alias; + typeFound = true; + } + + for(int ii = 0; !typeFound && ii < propTypeNameToTypesCount; ++ii) { + if(QLatin1String(propTypeNameToTypes[ii].name) == memberType) { + type = propTypeNameToTypes[ii].type; + typeFound = true; + } + } + + if (!typeFound && memberType.at(0).isUpper()) { + QString typemodifier; + if(node->typeModifier) + typemodifier = node->typeModifier->asString(); + if (typemodifier.isEmpty()) { + type = Object::DynamicProperty::Custom; + } else if(typemodifier == QLatin1String("list")) { + type = Object::DynamicProperty::CustomList; + } else { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Invalid property type modifier")); + error.setLine(node->typeModifierToken.startLine); + error.setColumn(node->typeModifierToken.startColumn); + _parser->_errors << error; + return false; + } + typeFound = true; + } else if (node->typeModifier) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Unexpected property type modifier")); + error.setLine(node->typeModifierToken.startLine); + error.setColumn(node->typeModifierToken.startColumn); + _parser->_errors << error; + return false; + } + + if(!typeFound) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Expected property type")); + error.setLine(node->typeToken.startLine); + error.setColumn(node->typeToken.startColumn); + _parser->_errors << error; + return false; + } + + if (node->isReadonlyMember) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Readonly not yet supported")); + error.setLine(node->readonlyToken.startLine); + error.setColumn(node->readonlyToken.startColumn); + _parser->_errors << error; + return false; + + } + Object::DynamicProperty property; + property.isDefaultProperty = node->isDefaultMember; + property.type = type; + if (type >= Object::DynamicProperty::Custom) { + QDeclarativeScriptParser::TypeReference *typeRef = + _parser->findOrCreateType(memberType); + typeRef->refObjects.append(_stateStack.top().object); + } + property.customType = memberType.toUtf8(); + property.name = name.toUtf8(); + property.location = location(node->firstSourceLocation(), + node->lastSourceLocation()); + + if (node->expression) { // default value + property.defaultValue = new Property; + property.defaultValue->parent = _stateStack.top().object; + property.defaultValue->location = + location(node->expression->firstSourceLocation(), + node->expression->lastSourceLocation()); + QDeclarativeParser::Value *value = new QDeclarativeParser::Value; + value->location = location(node->expression->firstSourceLocation(), + node->expression->lastSourceLocation()); + value->value = getVariant(node->expression); + property.defaultValue->values << value; + } + + _stateStack.top().object->dynamicProperties << property; + + // process QML-like initializers (e.g. property Object o: Object {}) + accept(node->binding); + } + + return false; +} + + +// UiObjectMember: UiQualifiedId UiObjectInitializer ; +bool ProcessAST::visit(AST::UiObjectDefinition *node) +{ + LocationSpan l = location(node->firstSourceLocation(), + node->lastSourceLocation()); + + const QString objectType = asString(node->qualifiedTypeNameId); + const AST::SourceLocation typeLocation = node->qualifiedTypeNameId->identifierToken; + + defineObjectBinding(/*propertyName = */ 0, false, objectType, + typeLocation, l, node->initializer); + + return false; +} + + +// UiObjectMember: UiQualifiedId T_COLON UiQualifiedId UiObjectInitializer ; +bool ProcessAST::visit(AST::UiObjectBinding *node) +{ + LocationSpan l = location(node->qualifiedTypeNameId->identifierToken, + node->initializer->rbraceToken); + + const QString objectType = asString(node->qualifiedTypeNameId); + const AST::SourceLocation typeLocation = node->qualifiedTypeNameId->identifierToken; + + defineObjectBinding(node->qualifiedId, node->hasOnToken, objectType, + typeLocation, l, node->initializer); + + return false; +} + +QDeclarativeParser::Variant ProcessAST::getVariant(AST::ExpressionNode *expr) +{ + if (AST::StringLiteral *lit = AST::cast<AST::StringLiteral *>(expr)) { + return QDeclarativeParser::Variant(lit->value->asString()); + } else if (expr->kind == AST::Node::Kind_TrueLiteral) { + return QDeclarativeParser::Variant(true); + } else if (expr->kind == AST::Node::Kind_FalseLiteral) { + return QDeclarativeParser::Variant(false); + } else if (AST::NumericLiteral *lit = AST::cast<AST::NumericLiteral *>(expr)) { + return QDeclarativeParser::Variant(lit->value, asString(expr)); + } else { + + if (AST::UnaryMinusExpression *unaryMinus = AST::cast<AST::UnaryMinusExpression *>(expr)) { + if (AST::NumericLiteral *lit = AST::cast<AST::NumericLiteral *>(unaryMinus->expression)) { + return QDeclarativeParser::Variant(-lit->value, asString(expr)); + } + } + + return QDeclarativeParser::Variant(asString(expr), expr); + } +} + + +// UiObjectMember: UiQualifiedId T_COLON Statement ; +bool ProcessAST::visit(AST::UiScriptBinding *node) +{ + int propertyCount = 0; + AST::UiQualifiedId *propertyName = node->qualifiedId; + for (AST::UiQualifiedId *name = propertyName; name; name = name->next){ + ++propertyCount; + _stateStack.pushProperty(name->name->asString(), + location(name)); + } + + Property *prop = currentProperty(); + + if (prop->values.count()) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Property value set multiple times")); + error.setLine(this->location(propertyName).start.line); + error.setColumn(this->location(propertyName).start.column); + _parser->_errors << error; + return 0; + } + + QDeclarativeParser::Variant primitive; + + if (AST::ExpressionStatement *stmt = AST::cast<AST::ExpressionStatement *>(node->statement)) { + primitive = getVariant(stmt->expression); + } else { // do binding + primitive = QDeclarativeParser::Variant(asString(node->statement), + node->statement); + } + + prop->location.range.length = prop->location.range.offset + prop->location.range.length - node->qualifiedId->identifierToken.offset; + prop->location.range.offset = node->qualifiedId->identifierToken.offset; + QDeclarativeParser::Value *v = new QDeclarativeParser::Value; + v->value = primitive; + v->location = location(node->statement->firstSourceLocation(), + node->statement->lastSourceLocation()); + + prop->addValue(v); + + while (propertyCount--) + _stateStack.pop(); + + return true; +} + +static QList<int> collectCommas(AST::UiArrayMemberList *members) +{ + QList<int> commas; + + if (members) { + for (AST::UiArrayMemberList *it = members->next; it; it = it->next) { + commas.append(it->commaToken.offset); + } + } + + return commas; +} + +// UiObjectMember: UiQualifiedId T_COLON T_LBRACKET UiArrayMemberList T_RBRACKET ; +bool ProcessAST::visit(AST::UiArrayBinding *node) +{ + int propertyCount = 0; + AST::UiQualifiedId *propertyName = node->qualifiedId; + for (AST::UiQualifiedId *name = propertyName; name; name = name->next){ + ++propertyCount; + _stateStack.pushProperty(name->name->asString(), + location(name)); + } + + Property* prop = currentProperty(); + + if (prop->values.count()) { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","Property value set multiple times")); + error.setLine(this->location(propertyName).start.line); + error.setColumn(this->location(propertyName).start.column); + _parser->_errors << error; + return 0; + } + + accept(node->members); + + // For the DOM, store the position of the T_LBRACKET upto the T_RBRACKET as the range: + prop->listValueRange.offset = node->lbracketToken.offset; + prop->listValueRange.length = node->rbracketToken.offset + node->rbracketToken.length - node->lbracketToken.offset; + + // Store the positions of the comma token too, again for the DOM to be able to retrieve it. + prop->listCommaPositions = collectCommas(node->members); + + while (propertyCount--) + _stateStack.pop(); + + return false; +} + +bool ProcessAST::visit(AST::UiSourceElement *node) +{ + QDeclarativeParser::Object *obj = currentObject(); + + if (AST::FunctionDeclaration *funDecl = AST::cast<AST::FunctionDeclaration *>(node->sourceElement)) { + + Object::DynamicSlot slot; + slot.location = location(funDecl->firstSourceLocation(), funDecl->lastSourceLocation()); + + AST::FormalParameterList *f = funDecl->formals; + while (f) { + slot.parameterNames << f->name->asString().toUtf8(); + f = f->finish(); + } + + AST::SourceLocation loc = funDecl->rparenToken; + loc.offset = loc.end(); + loc.startColumn += 1; + QString body = textAt(loc, funDecl->rbraceToken); + slot.name = funDecl->name->asString().toUtf8(); + slot.body = body; + obj->dynamicSlots << slot; + + } else { + QDeclarativeError error; + error.setDescription(QCoreApplication::translate("QDeclarativeParser","JavaScript declaration outside Script element")); + error.setLine(node->firstSourceLocation().startLine); + error.setColumn(node->firstSourceLocation().startColumn); + _parser->_errors << error; + } + return false; +} + +} // end of anonymous namespace + + +QDeclarativeScriptParser::QDeclarativeScriptParser() +: root(0), data(0) +{ + +} + +QDeclarativeScriptParser::~QDeclarativeScriptParser() +{ + clear(); +} + +class QDeclarativeScriptParserJsASTData +{ +public: + QDeclarativeScriptParserJsASTData(const QString &filename) + : nodePool(filename, &engine) {} + + Engine engine; + NodePool nodePool; +}; + +bool QDeclarativeScriptParser::parse(const QByteArray &qmldata, const QUrl &url) +{ + clear(); + + const QString fileName = url.toString(); + _scriptFile = fileName; + + QTextStream stream(qmldata, QIODevice::ReadOnly); +#ifndef QT_NO_TEXTCODEC + stream.setCodec("UTF-8"); +#endif + const QString code = stream.readAll(); + + data = new QDeclarativeScriptParserJsASTData(fileName); + + Lexer lexer(&data->engine); + lexer.setCode(code, /*line = */ 1); + + Parser parser(&data->engine); + + if (! parser.parse() || !_errors.isEmpty()) { + + // Extract errors from the parser + foreach (const DiagnosticMessage &m, parser.diagnosticMessages()) { + + if (m.isWarning()) + continue; + + QDeclarativeError error; + error.setUrl(url); + error.setDescription(m.message); + error.setLine(m.loc.startLine); + error.setColumn(m.loc.startColumn); + _errors << error; + + } + } + + if (_errors.isEmpty()) { + ProcessAST process(this); + process(code, parser.ast()); + + // Set the url for process errors + for(int ii = 0; ii < _errors.count(); ++ii) + _errors[ii].setUrl(url); + } + + return _errors.isEmpty(); +} + +QList<QDeclarativeScriptParser::TypeReference*> QDeclarativeScriptParser::referencedTypes() const +{ + return _refTypes; +} + +QDeclarativeParser::Object *QDeclarativeScriptParser::tree() const +{ + return root; +} + +QList<QDeclarativeScriptParser::Import> QDeclarativeScriptParser::imports() const +{ + return _imports; +} + +QList<QDeclarativeError> QDeclarativeScriptParser::errors() const +{ + return _errors; +} + +static void replaceWithSpace(QString &str, int idx, int n) +{ + QChar *data = str.data() + idx; + const QChar space(QLatin1Char(' ')); + for (int ii = 0; ii < n; ++ii) + *data++ = space; +} + +/* +Searches for ".pragma <value>" declarations within \a script. Currently supported pragmas +are: + library +*/ +QDeclarativeParser::Object::ScriptBlock::Pragmas QDeclarativeScriptParser::extractPragmas(QString &script) +{ + QDeclarativeParser::Object::ScriptBlock::Pragmas rv = QDeclarativeParser::Object::ScriptBlock::None; + + const QString pragma(QLatin1String("pragma")); + const QString library(QLatin1String("library")); + + QDeclarativeJS::Lexer l(0); + l.setCode(script, 0); + + int token = l.lex(); + + while (true) { + if (token != QDeclarativeJSGrammar::T_DOT) + return rv; + + int startOffset = l.tokenOffset(); + int startLine = l.currentLineNo(); + + token = l.lex(); + + if (token != QDeclarativeJSGrammar::T_IDENTIFIER || + l.currentLineNo() != startLine || + script.mid(l.tokenOffset(), l.tokenLength()) != pragma) + return rv; + + token = l.lex(); + + if (token != QDeclarativeJSGrammar::T_IDENTIFIER || + l.currentLineNo() != startLine) + return rv; + + QString pragmaValue = script.mid(l.tokenOffset(), l.tokenLength()); + int endOffset = l.tokenLength() + l.tokenOffset(); + + token = l.lex(); + if (l.currentLineNo() == startLine) + return rv; + + if (pragmaValue == library) { + rv |= QDeclarativeParser::Object::ScriptBlock::Shared; + replaceWithSpace(script, startOffset, endOffset - startOffset); + } else { + return rv; + } + } + return rv; +} + +#define CHECK_LINE if(l.currentLineNo() != startLine) return rv; +#define CHECK_TOKEN(t) if (token != QDeclarativeJSGrammar:: t) return rv; + +static const int uriTokens[] = { + QDeclarativeJSGrammar::T_IDENTIFIER, + QDeclarativeJSGrammar::T_PROPERTY, + QDeclarativeJSGrammar::T_SIGNAL, + QDeclarativeJSGrammar::T_READONLY, + QDeclarativeJSGrammar::T_ON, + QDeclarativeJSGrammar::T_BREAK, + QDeclarativeJSGrammar::T_CASE, + QDeclarativeJSGrammar::T_CATCH, + QDeclarativeJSGrammar::T_CONTINUE, + QDeclarativeJSGrammar::T_DEFAULT, + QDeclarativeJSGrammar::T_DELETE, + QDeclarativeJSGrammar::T_DO, + QDeclarativeJSGrammar::T_ELSE, + QDeclarativeJSGrammar::T_FALSE, + QDeclarativeJSGrammar::T_FINALLY, + QDeclarativeJSGrammar::T_FOR, + QDeclarativeJSGrammar::T_FUNCTION, + QDeclarativeJSGrammar::T_IF, + QDeclarativeJSGrammar::T_IN, + QDeclarativeJSGrammar::T_INSTANCEOF, + QDeclarativeJSGrammar::T_NEW, + QDeclarativeJSGrammar::T_NULL, + QDeclarativeJSGrammar::T_RETURN, + QDeclarativeJSGrammar::T_SWITCH, + QDeclarativeJSGrammar::T_THIS, + QDeclarativeJSGrammar::T_THROW, + QDeclarativeJSGrammar::T_TRUE, + QDeclarativeJSGrammar::T_TRY, + QDeclarativeJSGrammar::T_TYPEOF, + QDeclarativeJSGrammar::T_VAR, + QDeclarativeJSGrammar::T_VOID, + QDeclarativeJSGrammar::T_WHILE, + QDeclarativeJSGrammar::T_CONST, + QDeclarativeJSGrammar::T_DEBUGGER, + QDeclarativeJSGrammar::T_RESERVED_WORD, + QDeclarativeJSGrammar::T_WITH, + + QDeclarativeJSGrammar::EOF_SYMBOL +}; +static inline bool isUriToken(int token) +{ + const int *current = uriTokens; + while (*current != QDeclarativeJSGrammar::EOF_SYMBOL) { + if (*current == token) + return true; + ++current; + } + return false; +} + +QDeclarativeScriptParser::JavaScriptMetaData QDeclarativeScriptParser::extractMetaData(QString &script) +{ + JavaScriptMetaData rv; + + QDeclarativeParser::Object::ScriptBlock::Pragmas &pragmas = rv.pragmas; + + const QString pragma(QLatin1String("pragma")); + const QString js(QLatin1String(".js")); + const QString library(QLatin1String("library")); + + QDeclarativeJS::Lexer l(0); + l.setCode(script, 0); + + int token = l.lex(); + + while (true) { + if (token != QDeclarativeJSGrammar::T_DOT) + return rv; + + int startOffset = l.tokenOffset(); + int startLine = l.currentLineNo(); + + token = l.lex(); + + CHECK_LINE; + + if (token == QDeclarativeJSGrammar::T_IMPORT) { + + // .import <URI> <Version> as <Identifier> + // .import <file.js> as <Identifier> + + token = l.lex(); + + CHECK_LINE; + + if (token == QDeclarativeJSGrammar::T_STRING_LITERAL) { + + QString file(l.characterBuffer(), l.characterCount()); + if (!file.endsWith(js)) + return rv; + + token = l.lex(); + + CHECK_TOKEN(T_AS); + CHECK_LINE; + + token = l.lex(); + + CHECK_TOKEN(T_IDENTIFIER); + CHECK_LINE; + + int endOffset = l.tokenLength() + l.tokenOffset(); + + QString importId = script.mid(l.tokenOffset(), l.tokenLength()); + + if (!importId.at(0).isUpper()) + return rv; + + token = l.lex(); + if (l.currentLineNo() == startLine) + return rv; + + replaceWithSpace(script, startOffset, endOffset - startOffset); + + Import import; + import.type = Import::Script; + import.uri = file; + import.qualifier = importId; + + rv.imports << import; + + } else { + // URI + QString uri; + QString version; + + while (true) { + if (!isUriToken(token)) + return rv; + + uri.append(QString(l.characterBuffer(), l.characterCount())); + + token = l.lex(); + CHECK_LINE; + if (token != QDeclarativeJSGrammar::T_DOT) + break; + + uri.append(QLatin1Char('.')); + + token = l.lex(); + CHECK_LINE; + } + + CHECK_TOKEN(T_NUMERIC_LITERAL); + version = script.mid(l.tokenOffset(), l.tokenLength()); + + token = l.lex(); + + CHECK_TOKEN(T_AS); + CHECK_LINE; + + token = l.lex(); + + CHECK_TOKEN(T_IDENTIFIER); + CHECK_LINE; + + int endOffset = l.tokenLength() + l.tokenOffset(); + + QString importId = script.mid(l.tokenOffset(), l.tokenLength()); + + if (!importId.at(0).isUpper()) + return rv; + + token = l.lex(); + if (l.currentLineNo() == startLine) + return rv; + + replaceWithSpace(script, startOffset, endOffset - startOffset); + + Import import; + import.type = Import::Library; + import.uri = uri; + import.version = version; + import.qualifier = importId; + + rv.imports << import; + } + + } else if (token == QDeclarativeJSGrammar::T_IDENTIFIER && + script.mid(l.tokenOffset(), l.tokenLength()) == pragma) { + + token = l.lex(); + + CHECK_TOKEN(T_IDENTIFIER); + CHECK_LINE; + + QString pragmaValue = script.mid(l.tokenOffset(), l.tokenLength()); + int endOffset = l.tokenLength() + l.tokenOffset(); + + if (pragmaValue == QLatin1String("library")) { + pragmas |= QDeclarativeParser::Object::ScriptBlock::Shared; + replaceWithSpace(script, startOffset, endOffset - startOffset); + } else { + return rv; + } + + token = l.lex(); + if (l.currentLineNo() == startLine) + return rv; + + } else { + return rv; + } + } + return rv; +} + +void QDeclarativeScriptParser::clear() +{ + if (root) { + root->release(); + root = 0; + } + _imports.clear(); + qDeleteAll(_refTypes); + _refTypes.clear(); + _errors.clear(); + + if (data) { + delete data; + data = 0; + } +} + +QDeclarativeScriptParser::TypeReference *QDeclarativeScriptParser::findOrCreateType(const QString &name) +{ + TypeReference *type = 0; + int i = 0; + for (; i < _refTypes.size(); ++i) { + if (_refTypes.at(i)->name == name) { + type = _refTypes.at(i); + break; + } + } + if (!type) { + type = new TypeReference(i, name); + _refTypes.append(type); + } + + return type; +} + +void QDeclarativeScriptParser::setTree(QDeclarativeParser::Object *tree) +{ + Q_ASSERT(! root); + + root = tree; +} + +QT_END_NAMESPACE |