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/*
 * 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.codegen.context;

import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.codegen.OwnerKind;
import org.jetbrains.kotlin.codegen.StackValue;
import org.jetbrains.kotlin.codegen.binding.MutableClosure;
import org.jetbrains.kotlin.codegen.state.KotlinTypeMapper;
import org.jetbrains.kotlin.descriptors.ClassDescriptor;
import org.jetbrains.kotlin.descriptors.ConstructorDescriptor;
import org.jetbrains.kotlin.resolve.jvm.AsmTypes;
import org.jetbrains.kotlin.types.SimpleType;
import org.jetbrains.org.objectweb.asm.Type;

public class ConstructorContext extends MethodContext {
    private boolean thisInitialized = false;
    private final KotlinTypeMapper kotlinTypeMapper;

    public ConstructorContext(
            @NotNull ConstructorDescriptor contextDescriptor,
            @NotNull OwnerKind kind,
            @NotNull CodegenContext parent,
            @Nullable MutableClosure closure,
            @NotNull KotlinTypeMapper kotlinTypeMapper
    ) {
        super(contextDescriptor, kind, parent, closure, false);
        this.kotlinTypeMapper = kotlinTypeMapper;
    }

    @Override
    public StackValue getOuterExpression(StackValue prefix, boolean ignoreNoOuter) {
        ClassDescriptor capturedOuterClassDescriptor = closure != null ? closure.getCapturedOuterClassDescriptor() : null;
        StackValue stackValue;
        if (capturedOuterClassDescriptor != null) {
            if (capturedOuterClassDescriptor.isInline()) {
                SimpleType outerClassKotlinType = capturedOuterClassDescriptor.getDefaultType();
                Type outerClassType = kotlinTypeMapper.mapType(capturedOuterClassDescriptor);
                stackValue = StackValue.local(1, outerClassType, outerClassKotlinType);
            }
            else {
                stackValue = StackValue.local(1, AsmTypes.OBJECT_TYPE);
            }
        }
        else {
            stackValue = null;
        }
        if (!ignoreNoOuter && stackValue == null) {
            throw new UnsupportedOperationException("Don't know how to generate outer expression for " + getContextDescriptor());
        }
        return stackValue;
    }

    public ConstructorDescriptor getConstructorDescriptor() {
        return (ConstructorDescriptor) getContextDescriptor();
    }

    public boolean isThisInitialized() {
        return thisInitialized;
    }

    public void setThisInitialized(boolean thisInitialized) {
        this.thisInitialized = thisInitialized;
    }

    @Override
    public boolean isContextWithUninitializedThis() {
        return !isThisInitialized();
    }

    @Override
    public String toString() {
        return "Constructor: " + (isThisInitialized() ? "" : "UNINITIALIZED ") + getContextDescriptor();
    }
}