/*
 * 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.
 */

package org.jetbrains.kotlin.descriptors.runtime.structure

import org.jetbrains.kotlin.load.java.structure.JavaConstructor
import org.jetbrains.kotlin.load.java.structure.JavaValueParameter
import java.lang.reflect.Constructor
import java.lang.reflect.Modifier

class ReflectJavaConstructor(override val member: Constructor<*>) : ReflectJavaMember(), JavaConstructor {
    // TODO: test local/anonymous classes
    override val valueParameters: List<JavaValueParameter>
        get() {
            val types = member.genericParameterTypes
            if (types.isEmpty()) return emptyList()

            val klass = member.declaringClass

            val realTypes = when {
                klass.declaringClass != null && !Modifier.isStatic(klass.modifiers) -> types.copyOfRange(1, types.size)
                else -> types
            }

            val annotations = member.parameterAnnotations
            val realAnnotations = when {
                annotations.size < realTypes.size -> throw IllegalStateException("Illegal generic signature: $member")
                annotations.size > realTypes.size -> annotations.copyOfRange(annotations.size - realTypes.size, annotations.size)
                else -> annotations
            }

            return getValueParameters(realTypes, realAnnotations, member.isVarArgs)
        }

    override val typeParameters: List<ReflectJavaTypeParameter>
        get() = member.typeParameters.map(::ReflectJavaTypeParameter)
}
