/*
* Copyright 2010-2016 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.kotlin.js.translate.reference;
import org.jetbrains.annotations.
NotNull;
import org.jetbrains.kotlin.descriptors.
ClassDescriptor;
import org.jetbrains.kotlin.descriptors.
DeclarationDescriptor;
import org.jetbrains.kotlin.js.backend.ast.
JsExpression;
import org.jetbrains.kotlin.js.translate.context.
TranslationContext;
import org.jetbrains.kotlin.js.translate.general.
AbstractTranslator;
import org.jetbrains.kotlin.js.translate.intrinsic.objects.
ObjectIntrinsic;
import org.jetbrains.kotlin.psi.
KtReferenceExpression;
import org.jetbrains.kotlin.psi.
KtSimpleNameExpression;
import static org.jetbrains.kotlin.js.translate.utils.
BindingUtils.getDescriptorForReferenceExpression;
public class
CompanionObjectIntrinsicAccessTranslator extends
AbstractTranslator implements
AccessTranslator {
@
NotNull
/*package*/ static
CompanionObjectIntrinsicAccessTranslator newInstance(
@
NotNull KtSimpleNameExpression expression,
@
NotNull TranslationContext context
) {
DeclarationDescriptor referenceDescriptor =
getDescriptorForReferenceExpression(
context.
bindingContext(),
expression);
assert
referenceDescriptor != null : "JetSimpleName expression must reference a descriptor " +
expression.
getText();
return new
CompanionObjectIntrinsicAccessTranslator(
referenceDescriptor,
context);
}
/*package*/ static boolean
isCompanionObjectReference(
@
NotNull KtReferenceExpression expression,
@
NotNull TranslationContext context
) {
DeclarationDescriptor descriptor =
getDescriptorForReferenceExpression(
context.
bindingContext(),
expression);
return
descriptor instanceof
ClassDescriptor &&
context.
intrinsics().
getObjectIntrinsic((
ClassDescriptor)
descriptor) != null;
}
@
NotNull
private final
JsExpression referenceToCompanionObject;
private
CompanionObjectIntrinsicAccessTranslator(@
NotNull DeclarationDescriptor descriptor, @
NotNull TranslationContext context) {
super(
context);
this.
referenceToCompanionObject =
generateReferenceToCompanionObject(
descriptor,
context);
}
@
NotNull
private static
JsExpression generateReferenceToCompanionObject(
@
NotNull DeclarationDescriptor descriptor,
@
NotNull TranslationContext context
) {
ObjectIntrinsic objectIntrinsic =
context.
intrinsics().
getObjectIntrinsic((
ClassDescriptor)
descriptor);
return
objectIntrinsic.
apply(
context);
}
@
Override
@
NotNull
public
JsExpression translateAsGet() {
return
referenceToCompanionObject;
}
@
Override
@
NotNull
public
JsExpression translateAsSet(@
NotNull JsExpression toSetTo) {
throw new
IllegalStateException("companion object can't be set");
}
@
NotNull
@
Override
public
AccessTranslator getCached() {
return this;
}
}