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/*
 * GenericMethodInstance.java
 *
 * Copyright (c) 2013 Mike Strobel
 *
 * This source code is based on Mono.Cecil from Jb Evain, Copyright (c) Jb Evain;
 * and ILSpy/ICSharpCode from SharpDevelop, Copyright (c) AlphaSierraPapa.
 *
 * This source code is subject to terms and conditions of the Apache License, Version 2.0.
 * A copy of the license can be found in the License.html file at the root of this distribution.
 * By using this source code in any fashion, you are agreeing to be bound by the terms of the
 * Apache License, Version 2.0.
 *
 * You must not remove this notice, or any other, from this software.
 */

package com.strobel.assembler.metadata;

import com.strobel.core.VerifyArgument;

import java.util.Collections;
import java.util.List;

final class GenericMethodInstance extends MethodReference implements IGenericInstance {
    private final MethodReference _genericDefinition;
    private final TypeReference _returnType;
    private final ParameterDefinitionCollection _parameters;
    private final List _typeArguments;

    private TypeReference _declaringType;

    GenericMethodInstance(
        final TypeReference declaringType,
        final MethodReference definition,
        final TypeReference returnType,
        final List parameters,
        final List typeArguments) {

        _declaringType = VerifyArgument.notNull(declaringType, "declaringType");
        _genericDefinition = VerifyArgument.notNull(definition, "definition");
        _returnType = VerifyArgument.notNull(returnType, "returnType");
        _parameters = new ParameterDefinitionCollection(this);
        _typeArguments = VerifyArgument.notNull(typeArguments, "typeArguments");

        _parameters.addAll(VerifyArgument.notNull(parameters, "parameters"));
        _parameters.freeze();
    }

    @Override
    public final boolean hasTypeArguments() {
        return !_typeArguments.isEmpty();
    }

    @Override
    public final List getTypeArguments() {
        return _typeArguments;
    }

    @Override
    public final IGenericParameterProvider getGenericDefinition() {
        return _genericDefinition;
    }

    @Override
    public final List getGenericParameters() {
        return _genericDefinition.getGenericParameters();
    }

    @Override
    public final TypeReference getReturnType() {
        return _returnType;
    }

    @Override
    public final List getParameters() {
        return _parameters;
    }

    @Override
    public boolean isGenericMethod() {
        return hasTypeArguments();
    }

    @Override
    public MethodDefinition resolve() {
        return _genericDefinition.resolve();
    }

    @Override
    public StringBuilder appendErasedSignature(final StringBuilder sb) {
        return _genericDefinition.appendErasedSignature(sb);
    }

    @Override
    public final TypeReference getDeclaringType() {
        return _declaringType;
    }

    final void setDeclaringType(final TypeReference declaringType) {
        _declaringType = declaringType;
    }

    @Override
    public final String getName() {
        return _genericDefinition.getName();
    }
}