001/*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.jetbrains.k2js.translate.operation;
018
019import com.google.dart.compiler.backend.js.ast.JsExpression;
020import org.jetbrains.annotations.NotNull;
021import org.jetbrains.jet.lang.descriptors.FunctionDescriptor;
022import org.jetbrains.jet.lang.psi.JetBinaryExpression;
023import org.jetbrains.k2js.translate.context.TranslationContext;
024import org.jetbrains.k2js.translate.reference.CallBuilder;
025import org.jetbrains.k2js.translate.utils.BindingUtils;
026
027public final class OverloadedAssignmentTranslator extends AssignmentTranslator {
028
029    @NotNull
030    public static JsExpression doTranslate(@NotNull JetBinaryExpression expression,
031            @NotNull TranslationContext context) {
032        return (new OverloadedAssignmentTranslator(expression, context)).translate();
033    }
034
035    @NotNull
036    private final FunctionDescriptor operationDescriptor;
037
038    private OverloadedAssignmentTranslator(@NotNull JetBinaryExpression expression,
039            @NotNull TranslationContext context) {
040        super(expression, context);
041        FunctionDescriptor functionDescriptor =
042                BindingUtils.getFunctionDescriptorForOperationExpression(context.bindingContext(), expression);
043        assert functionDescriptor != null : "";
044        this.operationDescriptor = functionDescriptor;
045    }
046
047    @NotNull
048    private JsExpression translate() {
049        if (isVariableReassignment) {
050            return reassignment();
051        }
052        return overloadedMethodInvocation();
053    }
054
055    @NotNull
056    private JsExpression reassignment() {
057        return accessTranslator.translateAsSet(overloadedMethodInvocation());
058    }
059
060    @NotNull
061    private JsExpression overloadedMethodInvocation() {
062        return CallBuilder.build(context())
063                .descriptor(operationDescriptor)
064                .receiver(accessTranslator.translateAsGet())
065                .args(right)
066                .translate();
067    }
068}