org.jetbrains.k2js.translate.operation.AssignmentTranslator Maven / Gradle / Ivy
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* Copyright 2010-2013 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.
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package org.jetbrains.k2js.translate.operation;
import com.google.dart.compiler.backend.js.ast.JsBlock;
import com.google.dart.compiler.backend.js.ast.JsExpression;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
import org.jetbrains.jet.lang.descriptors.PropertyDescriptor;
import org.jetbrains.jet.lang.psi.JetBinaryExpression;
import org.jetbrains.jet.lang.psi.JetExpression;
import org.jetbrains.jet.lang.psi.JetSimpleNameExpression;
import org.jetbrains.jet.lang.types.expressions.OperatorConventions;
import org.jetbrains.jet.lexer.JetToken;
import org.jetbrains.k2js.translate.context.TranslationContext;
import org.jetbrains.k2js.translate.general.AbstractTranslator;
import org.jetbrains.k2js.translate.reference.AccessTranslationUtils;
import org.jetbrains.k2js.translate.reference.AccessTranslator;
import org.jetbrains.k2js.translate.reference.BackingFieldAccessTranslator;
import static org.jetbrains.k2js.translate.utils.BindingUtils.getDescriptorForReferenceExpression;
import static org.jetbrains.k2js.translate.utils.BindingUtils.isVariableReassignment;
import static org.jetbrains.k2js.translate.utils.PsiUtils.getOperationToken;
import static org.jetbrains.k2js.translate.utils.PsiUtils.getSimpleName;
import static org.jetbrains.k2js.translate.utils.PsiUtils.isAssignment;
import static org.jetbrains.k2js.translate.utils.TranslationUtils.hasCorrespondingFunctionIntrinsic;
import static org.jetbrains.k2js.translate.utils.TranslationUtils.translateRightExpression;
public abstract class AssignmentTranslator extends AbstractTranslator {
public static boolean isAssignmentOperator(JetBinaryExpression expression) {
JetToken operationToken = getOperationToken(expression);
return (OperatorConventions.ASSIGNMENT_OPERATIONS.keySet().contains(operationToken)
|| isAssignment(operationToken));
}
@NotNull
public static JsExpression translate(@NotNull JetBinaryExpression expression,
@NotNull TranslationContext context) {
if (hasCorrespondingFunctionIntrinsic(context, expression)) {
return IntrinsicAssignmentTranslator.doTranslate(expression, context);
}
return OverloadedAssignmentTranslator.doTranslate(expression, context);
}
@NotNull
protected final JetBinaryExpression expression;
protected final AccessTranslator accessTranslator;
protected final boolean isVariableReassignment;
@NotNull
protected final JsExpression right;
protected AssignmentTranslator(@NotNull JetBinaryExpression expression,
@NotNull TranslationContext context) {
super(context);
this.expression = expression;
this.isVariableReassignment = isVariableReassignment(context.bindingContext(), expression);
JetExpression left = expression.getLeft();
assert left != null : "No left-hand side: " + expression.getText();
JsBlock rightBlock = new JsBlock();
this.right = translateRightExpression(context, expression, rightBlock);
if (isValProperty(left, context)) {
JetSimpleNameExpression simpleName = getSimpleName(left);
assert simpleName != null;
this.accessTranslator = BackingFieldAccessTranslator.newInstance(simpleName, context);
} else {
this.accessTranslator = AccessTranslationUtils.getAccessTranslator(left, context(), !rightBlock.isEmpty());
}
context.addStatementsToCurrentBlockFrom(rightBlock);
}
private static boolean isValProperty(
@NotNull JetExpression expression,
@NotNull TranslationContext context
) {
JetSimpleNameExpression simpleNameExpression = getSimpleName(expression);
if (simpleNameExpression != null) {
DeclarationDescriptor descriptor = getDescriptorForReferenceExpression(context.bindingContext(), simpleNameExpression);
return descriptor instanceof PropertyDescriptor && !((PropertyDescriptor) descriptor).isVar();
}
return false;
}
}