org.jetbrains.kotlin.js.translate.operation.CompareToTranslator Maven / Gradle / Ivy
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* Copyright 2010-2017 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.kotlin.js.translate.operation;
import org.jetbrains.kotlin.js.backend.ast.JsBinaryOperation;
import org.jetbrains.kotlin.js.backend.ast.JsBinaryOperator;
import org.jetbrains.kotlin.js.backend.ast.JsExpression;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.descriptors.CallableDescriptor;
import org.jetbrains.kotlin.js.backend.ast.JsIntLiteral;
import org.jetbrains.kotlin.js.translate.context.TranslationContext;
import org.jetbrains.kotlin.js.translate.general.AbstractTranslator;
import org.jetbrains.kotlin.lexer.KtToken;
import org.jetbrains.kotlin.psi.KtBinaryExpression;
import org.jetbrains.kotlin.types.expressions.OperatorConventions;
import static org.jetbrains.kotlin.js.translate.utils.BindingUtils.getCallableDescriptorForOperationExpression;
import static org.jetbrains.kotlin.js.translate.utils.ErrorReportingUtils.message;
import static org.jetbrains.kotlin.js.translate.utils.JsDescriptorUtils.isCompareTo;
import static org.jetbrains.kotlin.js.translate.utils.PsiUtils.getOperationToken;
public final class CompareToTranslator extends AbstractTranslator {
public static boolean isCompareToCall(
@NotNull KtToken operationToken,
@Nullable CallableDescriptor operationDescriptor
) {
if (!OperatorConventions.COMPARISON_OPERATIONS.contains(operationToken) || operationDescriptor == null) return false;
return isCompareTo(operationDescriptor);
}
@NotNull
public static JsExpression translate(@NotNull KtBinaryExpression expression,
@NotNull TranslationContext context) {
return (new CompareToTranslator(expression, context)).translate();
}
@NotNull
private final KtBinaryExpression expression;
private CompareToTranslator(
@NotNull KtBinaryExpression expression,
@NotNull TranslationContext context
) {
super(context);
this.expression = expression;
CallableDescriptor descriptor = getCallableDescriptorForOperationExpression(context.bindingContext(), expression);
assert descriptor != null : "CompareTo should always have a descriptor";
assert (OperatorConventions.COMPARISON_OPERATIONS.contains(getOperationToken(expression))) :
message(expression, "CompareToTranslator supported only expressions with operation token from COMPARISON_OPERATIONS, " +
"expression: " + expression.getText());
}
@NotNull
private JsExpression translate() {
JsBinaryOperator correspondingOperator = OperatorTable.getBinaryOperator(getOperationToken(expression));
JsExpression methodCall = BinaryOperationTranslator.translateAsOverloadedCall(expression, context());
return new JsBinaryOperation(correspondingOperator, methodCall, new JsIntLiteral(0));
}
}