/
LiteralFunctionTranslator.java
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/
LiteralFunctionTranslator.java
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/*
* Copyright 2010-2012 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.k2js.translate.expression;
import com.google.dart.compiler.backend.js.ast.*;
import com.intellij.openapi.util.NotNullLazyValue;
import com.intellij.openapi.util.Trinity;
import com.intellij.util.containers.Stack;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.jet.lang.descriptors.*;
import org.jetbrains.jet.lang.psi.JetClassBody;
import org.jetbrains.jet.lang.psi.JetClassOrObject;
import org.jetbrains.jet.lang.psi.JetDeclarationWithBody;
import org.jetbrains.k2js.translate.LabelGenerator;
import org.jetbrains.k2js.translate.context.AliasingContext;
import org.jetbrains.k2js.translate.context.Namer;
import org.jetbrains.k2js.translate.context.TranslationContext;
import org.jetbrains.k2js.translate.context.UsageTracker;
import org.jetbrains.k2js.translate.declaration.ClassTranslator;
import org.jetbrains.k2js.translate.general.AbstractTranslator;
import org.jetbrains.k2js.translate.initializer.InitializerUtils;
import java.util.List;
import static org.jetbrains.k2js.translate.expression.FunctionTranslator.addRegularParameters;
import static org.jetbrains.k2js.translate.utils.JsDescriptorUtils.getExpectedReceiverDescriptor;
public class LiteralFunctionTranslator extends AbstractTranslator {
private final Stack<NotNullLazyValue<Trinity<List<JsPropertyInitializer>, LabelGenerator, JsExpression>>> definitionPlaces =
new Stack<NotNullLazyValue<Trinity<List<JsPropertyInitializer>, LabelGenerator, JsExpression>>>();
private NotNullLazyValue<Trinity<List<JsPropertyInitializer>, LabelGenerator, JsExpression>> definitionPlace;
public LiteralFunctionTranslator(@NotNull TranslationContext context) {
super(context);
}
public static Trinity<List<JsPropertyInitializer>, LabelGenerator, JsExpression> createPlace(@NotNull List<JsPropertyInitializer> list,
@NotNull JsExpression reference) {
return Trinity.create(list, new LabelGenerator('f'), reference);
}
public void setDefinitionPlace(@Nullable NotNullLazyValue<Trinity<List<JsPropertyInitializer>, LabelGenerator, JsExpression>> place) {
if (place == null) {
definitionPlaces.pop();
definitionPlace = definitionPlaces.isEmpty() ? null : definitionPlaces.peek();
}
else {
definitionPlaces.push(place);
definitionPlace = place;
}
}
public JsExpression translateFunction(@NotNull JetDeclarationWithBody declaration, @NotNull FunctionDescriptor descriptor, @NotNull TranslationContext outerContext) {
JsFunction fun = createFunction();
final boolean asInner;
ClassDescriptor outerClass;
AliasingContext aliasingContext;
DeclarationDescriptor receiverDescriptor = getExpectedReceiverDescriptor(descriptor);
JsName receiverName;
if (receiverDescriptor == null) {
receiverName = null;
aliasingContext = null;
}
else {
receiverName = fun.getScope().declareName(Namer.getReceiverParameterName());
aliasingContext = outerContext.aliasingContext().inner(receiverDescriptor, receiverName.makeRef());
}
if (descriptor.getContainingDeclaration() instanceof ConstructorDescriptor) {
// KT-2388
asInner = true;
fun.setName(fun.getScope().declareName(Namer.CALLEE_NAME));
outerClass = (ClassDescriptor) descriptor.getContainingDeclaration().getContainingDeclaration();
assert outerClass != null;
if (receiverDescriptor == null) {
aliasingContext = outerContext.aliasingContext().notShareableThisAliased(outerClass, new JsNameRef("o", fun.getName().makeRef()));
}
}
else {
outerClass = null;
asInner = descriptor.getContainingDeclaration() instanceof NamespaceDescriptor;
}
TranslationContext funContext = outerContext.newFunctionBody(fun, aliasingContext,
new UsageTracker(descriptor, outerContext.usageTracker(), outerClass));
FunctionTranslator.translateBodyAndAdd(fun, descriptor, declaration, funContext);
if (asInner) {
addRegularParameters(descriptor, fun.getParameters(), funContext, receiverName);
if (outerClass != null) {
UsageTracker usageTracker = funContext.usageTracker();
assert usageTracker != null;
if (usageTracker.isUsed()) {
return new JsInvocation(context().namer().kotlin("assignOwner"), fun, JsLiteral.THIS);
}
else {
fun.setName(null);
}
}
return fun;
}
else {
JsExpression result = new InnerFunctionTranslator(descriptor, funContext, fun).translate(createReference(fun), outerContext);
addRegularParameters(descriptor, fun.getParameters(), funContext, receiverName);
return result;
}
}
private JsNameRef createReference(JsFunction fun) {
Trinity<List<JsPropertyInitializer>, LabelGenerator, JsExpression> place = definitionPlace.getValue();
JsNameRef nameRef = new JsNameRef(place.second.generate(), place.third);
place.first.add(new JsPropertyInitializer(nameRef, InitializerUtils.toDataDescriptor(fun, context())));
return nameRef;
}
private JsFunction createFunction() {
return new JsFunction(context().scope(), new JsBlock());
}
public JsExpression translate(
@NotNull ClassDescriptor outerClass,
@NotNull TranslationContext outerClassContext,
@NotNull JetClassOrObject declaration,
@NotNull ClassDescriptor descriptor,
@NotNull ClassTranslator classTranslator
) {
JsFunction fun = createFunction();
JsNameRef outerClassRef = fun.getScope().declareName(Namer.OUTER_CLASS_NAME).makeRef();
UsageTracker usageTracker = new UsageTracker(descriptor, outerClassContext.usageTracker(), outerClass);
TranslationContext funContext = outerClassContext.newFunctionBody(fun, outerClassContext.aliasingContext().inner(outerClass, outerClassRef),
usageTracker);
fun.getBody().getStatements().add(new JsReturn(classTranslator.translate(funContext)));
JetClassBody body = declaration.getBody();
assert body != null;
return new InnerObjectTranslator(funContext, fun).translate(createReference(fun), usageTracker.isUsed() ? outerClassRef : null);
}
}