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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.
 */

package org.jetbrains.jet.codegen.intrinsics;

import com.intellij.psi.PsiElement;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.jet.codegen.ExpressionCodegen;
import org.jetbrains.jet.codegen.StackValue;
import org.jetbrains.jet.codegen.inline.ReifiedTypeInliner;
import org.jetbrains.jet.lang.psi.JetElement;
import org.jetbrains.jet.lang.psi.JetExpression;
import org.jetbrains.jet.lang.resolve.calls.callUtil.CallUtilPackage;
import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCall;
import org.jetbrains.jet.lang.types.JetType;
import org.jetbrains.org.objectweb.asm.Type;
import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;

import java.util.List;

import static org.jetbrains.jet.codegen.AsmUtil.putJavaLangClassInstance;
import static org.jetbrains.jet.lang.resolve.java.AsmTypeConstants.getType;

public class JavaClassFunction extends IntrinsicMethod {
    @NotNull
    @Override
    public Type generateImpl(
            @NotNull ExpressionCodegen codegen,
            @NotNull InstructionAdapter v,
            @NotNull Type expectedType,
            @Nullable PsiElement element,
            @NotNull List arguments,
            @NotNull StackValue receiver
    ) {
        ResolvedCall resolvedCall = CallUtilPackage.getResolvedCallWithAssert(
                (JetElement) element, codegen.getBindingContext());
        JetType returnType = resolvedCall.getResultingDescriptor().getReturnType();
        assert returnType != null;

        JetType type = returnType.getArguments().get(0).getType();

        codegen.putReifierMarkerIfTypeIsReifiedParameter(type, ReifiedTypeInliner.JAVA_CLASS_MARKER_METHOD_NAME);

        putJavaLangClassInstance(v, codegen.getState().getTypeMapper().mapType(type));

        return getType(Class.class);
    }
}