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Move the scope building logic into QmlJS::ScopeBuilder.

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This commit is contained in:
Christian Kamm
2010-02-19 15:55:11 +01:00
parent 08cfc8f28c
commit e9039db984
6 changed files with 187 additions and 102 deletions
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6
src/libs/qmljs/qmljs-lib.pri
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@@ -17,7 +17,8 @@ HEADERS += \
$$PWD/qmljsscanner.h \
$$PWD/qmljsinterpreter.h \
$$PWD/qmljslink.h \
$$PWD/qmljscheck.h
$$PWD/qmljscheck.h \
$$PWD/qmljsscopebuilder.h
SOURCES += \
$$PWD/qmljsbind.cpp \
@@ -27,7 +28,8 @@ SOURCES += \
$$PWD/qmljsinterpreter.cpp \
$$PWD/qmljsmetatypesystem.cpp \
$$PWD/qmljslink.cpp \
$$PWD/qmljscheck.cpp
$$PWD/qmljscheck.cpp \
$$PWD/qmljsscopebuilder.cpp
contains(QT_CONFIG, declarative) {
QT += declarative

72
src/libs/qmljs/qmljscheck.cpp
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@@ -61,7 +61,7 @@ Check::Check(Document::Ptr doc, const Snapshot &snapshot)
, _snapshot(snapshot)
, _context(&_engine)
, _link(&_context, doc, snapshot)
, _allowAnyProperty(false)
, _scopeBuilder(doc, &_context)
{
}
@@ -109,71 +109,20 @@ void Check::visitQmlObject(Node *ast, UiQualifiedId *typeId,
return;
}
const bool oldAllowAnyProperty = _allowAnyProperty;
_scopeBuilder.push(ast);
if (! _context.lookupType(_doc.data(), typeId)) {
warning(typeId->identifierToken, tr(Messages::unknown_type));
_allowAnyProperty = true; // suppress subsequent "unknown property" errors
// suppress subsequent errors about scope object lookup by clearing
// the scope object list
// ### todo: better way?
_context.scopeChain().qmlScopeObjects.clear();
_context.scopeChain().update();
}
QList<const ObjectValue *> oldScopeObjects = _context.scopeChain().qmlScopeObjects;
_context.scopeChain().qmlScopeObjects.clear();
const ObjectValue *scopeObject = _doc->bind()->findQmlObject(ast);
_context.scopeChain().qmlScopeObjects += scopeObject;
_context.scopeChain().update();
#ifndef NO_DECLARATIVE_BACKEND
// check if the object has a Qt.ListElement ancestor
const ObjectValue *prototype = scopeObject->prototype(&_context);
while (prototype) {
if (const QmlObjectValue *qmlMetaObject = dynamic_cast<const QmlObjectValue *>(prototype)) {
// ### Also check for Qt package. Involves changes in QmlObjectValue.
if (qmlMetaObject->qmlTypeName() == QLatin1String("ListElement")) {
_allowAnyProperty = true;
break;
}
}
prototype = prototype->prototype(&_context);
}
// check if the object has a Qt.PropertyChanges ancestor
prototype = scopeObject->prototype(&_context);
while (prototype) {
if (const QmlObjectValue *qmlMetaObject = dynamic_cast<const QmlObjectValue *>(prototype)) {
// ### Also check for Qt package. Involves changes in QmlObjectValue.
if (qmlMetaObject->qmlTypeName() == QLatin1String("PropertyChanges"))
break;
}
prototype = prototype->prototype(&_context);
}
// find the target script binding
if (prototype && initializer) {
for (UiObjectMemberList *m = initializer->members; m; m = m->next) {
if (UiScriptBinding *scriptBinding = cast<UiScriptBinding *>(m->member)) {
if (scriptBinding->qualifiedId
&& scriptBinding->qualifiedId->name->asString() == QLatin1String("target")
&& ! scriptBinding->qualifiedId->next) {
if (ExpressionStatement *expStmt = cast<ExpressionStatement *>(scriptBinding->statement)) {
Evaluate evaluator(&_context);
const Value *targetValue = evaluator(expStmt->expression);
if (const ObjectValue *target = value_cast<const ObjectValue *>(targetValue)) {
_context.scopeChain().qmlScopeObjects.prepend(target);
} else {
_allowAnyProperty = true;
}
}
}
}
}
}
#endif
Node::accept(initializer, this);
_context.scopeChain().qmlScopeObjects = oldScopeObjects;
_allowAnyProperty = oldAllowAnyProperty;
_scopeBuilder.pop();
}
bool Check::visit(UiScriptBinding *ast)
@@ -231,10 +180,9 @@ bool Check::visit(UiArrayBinding *ast)
const Value *Check::checkScopeObjectMember(const UiQualifiedId *id)
{
if (_allowAnyProperty)
return 0;
QList<const ObjectValue *> scopeObjects = _context.scopeChain().qmlScopeObjects;
if (scopeObjects.isEmpty())
return 0;
if (! id)
return 0; // ### error?

4
src/libs/qmljs/qmljscheck.h
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@@ -33,6 +33,7 @@
#include <qmljs/qmljsdocument.h>
#include <qmljs/qmljsinterpreter.h>
#include <qmljs/qmljslink.h>
#include <qmljs/qmljsscopebuilder.h>
#include <qmljs/parser/qmljsastvisitor_p.h>
namespace QmlJS {
@@ -72,10 +73,9 @@ private:
Interpreter::Engine _engine;
Interpreter::Context _context;
Link _link;
ScopeBuilder _scopeBuilder;
QList<DiagnosticMessage> _messages;
bool _allowAnyProperty;
};
} // namespace QmlJS

41
src/libs/qmljs/qmljslink.cpp
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@@ -3,6 +3,7 @@
#include "parser/qmljsast_p.h"
#include "qmljsdocument.h"
#include "qmljsbind.h"
#include "qmljsscopebuilder.h"
#include <QtCore/QFileInfo>
#include <QtCore/QDir>
@@ -44,37 +45,16 @@ void Link::scopeChainAt(Document::Ptr doc, const QList<Node *> &astPath)
Bind *bind = doc->bind();
QHash<Document *, ScopeChain::QmlComponentChain *> componentScopes;
int qmlScopeObjectIndex = -1;
if (doc->qmlProgram()) {
_context->setLookupMode(Context::QmlLookup);
makeComponentChain(doc, &scopeChain.qmlComponentScope, &componentScopes);
// find the last object definition or object binding: that is the scope object
for (int i = astPath.size() - 1; i >= 0; --i) {
Node *node = astPath.at(i);
ObjectValue *scopeObject = 0;
if (UiObjectDefinition *definition = cast<UiObjectDefinition *>(node))
scopeObject = bind->findQmlObject(definition);
else if (UiObjectBinding *binding = cast<UiObjectBinding *>(node))
scopeObject = bind->findQmlObject(binding);
if (scopeObject) {
if (scopeObject != scopeChain.qmlComponentScope.rootObject)
scopeChain.qmlScopeObjects += scopeObject;
qmlScopeObjectIndex = i;
break;
}
}
if (const ObjectValue *typeEnvironment = _context->typeEnvironment(doc.data()))
scopeChain.qmlTypes = typeEnvironment;
} else {
// the global scope of a js file does not see the instantiating component
qDebug() << "ast path length: " << astPath.size();
if (astPath.size() != 0) {
if (astPath.size() > 0) {
// add scope chains for all components that source this document
foreach (Document::Ptr otherDoc, _docs) {
if (otherDoc->bind()->includedScripts().contains(doc->fileName())) {
@@ -91,20 +71,9 @@ void Link::scopeChainAt(Document::Ptr doc, const QList<Node *> &astPath)
scopeChain.jsScopes += bind->rootObjectValue();
}
for (int i = qmlScopeObjectIndex + 1; i < astPath.size(); ++i) {
Node *node = astPath.at(i);
if (FunctionDeclaration *fun = cast<FunctionDeclaration *>(node)) {
ObjectValue *activation = engine()->newObject(/*prototype = */ 0);
for (FormalParameterList *it = fun->formals; it; it = it->next) {
if (it->name)
activation->setProperty(it->name->asString(), engine()->undefinedValue());
}
scopeChain.jsScopes += activation;
}
}
scopeChain.update();
ScopeBuilder scopeBuilder(doc, _context);
foreach (Node *node, astPath)
scopeBuilder.push(node);
}
void Link::makeComponentChain(

129
src/libs/qmljs/qmljsscopebuilder.cpp Normal file
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@@ -0,0 +1,129 @@
#include "qmljsscopebuilder.h"
#include "qmljsbind.h"
#include "qmljsinterpreter.h"
#include "qmljsevaluate.h"
#include "parser/qmljsast_p.h"
using namespace QmlJS;
using namespace QmlJS::Interpreter;
using namespace QmlJS::AST;
ScopeBuilder::ScopeBuilder(Document::Ptr doc, Interpreter::Context *context)
: _doc(doc)
, _context(context)
{
}
ScopeBuilder::~ScopeBuilder()
{
}
void ScopeBuilder::push(AST::Node *node)
{
_nodes += node;
// QML scope object
Node *qmlObject = cast<UiObjectDefinition *>(node);
if (! qmlObject)
qmlObject = cast<UiObjectBinding *>(node);
if (qmlObject)
setQmlScopeObject(qmlObject);
// JS scopes
if (FunctionDeclaration *fun = cast<FunctionDeclaration *>(node)) {
ObjectValue *activation = _context->engine()->newObject(/*prototype = */ 0);
for (FormalParameterList *it = fun->formals; it; it = it->next) {
if (it->name)
activation->setProperty(it->name->asString(), _context->engine()->undefinedValue());
}
_context->scopeChain().jsScopes += activation;
}
_context->scopeChain().update();
}
void ScopeBuilder::pop()
{
Node *toRemove = _nodes.last();
_nodes.removeLast();
// JS scopes
if (cast<FunctionDeclaration *>(toRemove))
_context->scopeChain().jsScopes.removeLast();
// QML scope object
if (! _nodes.isEmpty()
&& (cast<UiObjectDefinition *>(toRemove) || cast<UiObjectBinding *>(toRemove)))
setQmlScopeObject(_nodes.last());
_context->scopeChain().update();
}
void ScopeBuilder::setQmlScopeObject(Node *node)
{
ScopeChain &scopeChain = _context->scopeChain();
scopeChain.qmlScopeObjects.clear();
const ObjectValue *scopeObject = _doc->bind()->findQmlObject(node);
if (scopeObject) {
if (scopeObject != scopeChain.qmlComponentScope.rootObject)
scopeChain.qmlScopeObjects += scopeObject;
}
#ifndef NO_DECLARATIVE_BACKEND
// check if the object has a Qt.ListElement ancestor
const ObjectValue *prototype = scopeObject->prototype(_context);
while (prototype) {
if (const QmlObjectValue *qmlMetaObject = dynamic_cast<const QmlObjectValue *>(prototype)) {
// ### Also check for Qt package. Involves changes in QmlObjectValue.
if (qmlMetaObject->qmlTypeName() == QLatin1String("ListElement")) {
scopeChain.qmlScopeObjects.clear();
break;
}
}
prototype = prototype->prototype(_context);
}
// check if the object has a Qt.PropertyChanges ancestor
prototype = scopeObject->prototype(_context);
while (prototype) {
if (const QmlObjectValue *qmlMetaObject = dynamic_cast<const QmlObjectValue *>(prototype)) {
// ### Also check for Qt package. Involves changes in QmlObjectValue.
if (qmlMetaObject->qmlTypeName() == QLatin1String("PropertyChanges"))
break;
}
prototype = prototype->prototype(_context);
}
// find the target script binding
if (prototype) {
UiObjectInitializer *initializer = 0;
if (UiObjectDefinition *definition = cast<UiObjectDefinition *>(node))
initializer = definition->initializer;
if (UiObjectBinding *binding = cast<UiObjectBinding *>(node))
initializer = binding->initializer;
if (initializer) {
for (UiObjectMemberList *m = initializer->members; m; m = m->next) {
if (UiScriptBinding *scriptBinding = cast<UiScriptBinding *>(m->member)) {
if (scriptBinding->qualifiedId
&& scriptBinding->qualifiedId->name->asString() == QLatin1String("target")
&& ! scriptBinding->qualifiedId->next) {
// ### make Evaluate understand statements.
if (ExpressionStatement *expStmt = cast<ExpressionStatement *>(scriptBinding->statement)) {
Evaluate evaluator(_context);
const Value *targetValue = evaluator(expStmt->expression);
if (const ObjectValue *target = value_cast<const ObjectValue *>(targetValue)) {
scopeChain.qmlScopeObjects.prepend(target);
} else {
scopeChain.qmlScopeObjects.clear();
}
}
}
}
}
}
}
#endif
}

37
src/libs/qmljs/qmljsscopebuilder.h Normal file
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@@ -0,0 +1,37 @@
#ifndef QMLJSSCOPEBUILDER_H
#define QMLJSSCOPEBUILDER_H
#include <qmljs/qmljsdocument.h>
#include <QtCore/QList>
namespace QmlJS {
namespace AST {
class Node;
}
namespace Interpreter {
class Context;
}
class ScopeBuilder
{
public:
ScopeBuilder(Document::Ptr doc, Interpreter::Context *context);
~ScopeBuilder();
void push(AST::Node *node);
void pop();
private:
void setQmlScopeObject(AST::Node *node);
Document::Ptr _doc;
Interpreter::Context *_context;
QList<AST::Node *> _nodes;
};
} // namespace QmlJS
#endif // QMLJSSCOPEBUILDER_H