org.jetbrains.kotlin.js.translate.intrinsic.functions.basic.FunctionIntrinsic Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of kotlin-compiler Show documentation
the Kotlin compiler
There is a newer version: 2.0.0
/*
 * Copyright 2010-2015 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.intrinsic.functions.basic;

import com.google.dart.compiler.backend.js.ast.JsExpression;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.js.translate.callTranslator.CallInfo;
import org.jetbrains.kotlin.js.translate.context.TranslationContext;

import java.util.List;

/**
 * Base for intrinsics that substitute standard function calls like Int#plus, Float#minus ... etc
 */
public abstract class FunctionIntrinsic {

    @NotNull
    public static final FunctionIntrinsic NO_INTRINSIC = new FunctionIntrinsic() {
        @Override
        public boolean exists() {
            return false;
        }

        @NotNull
        @Override
        public JsExpression apply(@Nullable JsExpression receiver,
                @NotNull List arguments,
                @NotNull TranslationContext context) {
            throw new UnsupportedOperationException("FunctionIntrinsic#NO_INTRINSIC_#apply");
        }
    };

    @Nullable
    protected static JsExpression getThisOrReceiverOrNull(@NotNull CallInfo callInfo) {
        if (callInfo.getDispatchReceiver() != null) {
            return callInfo.getDispatchReceiver();
        } else {
            return callInfo.getExtensionReceiver();
        }
    }

    @NotNull
    public JsExpression apply(@NotNull CallInfo callInfo,
            @NotNull List arguments,
            @NotNull TranslationContext context) {
        return apply(getThisOrReceiverOrNull(callInfo), arguments, context);
    }

    @NotNull
    public abstract JsExpression apply(@Nullable JsExpression receiver,
            @NotNull List arguments,
            @NotNull TranslationContext context
    );

    public boolean exists() {
        return true;
    }

    public abstract static class CallParametersAwareFunctionIntrinsic extends FunctionIntrinsic {
        @NotNull
        @Override
        public JsExpression apply(@Nullable JsExpression receiver,
                @NotNull List arguments,
                @NotNull TranslationContext context
        ) {
            throw new IllegalStateException();
        }
    }
}