com.google.gxp.compiler.base.Constructor.java Source code

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Here is the source code for com.google.gxp.compiler.base.Constructor.java

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/*
 * Copyright (C) 2008 Google Inc.
 *
 * 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 com.google.gxp.compiler.base;

import com.google.common.base.Function;
import com.google.common.base.Objects;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import com.google.gxp.compiler.alerts.SourcePosition;

import java.util.*;

/**
 * A template constructor. Corresponds to a {@code <gxp:constructor>} element.
 */
public class Constructor extends AbstractNode {
    private final ImmutableList<JavaAnnotation> javaAnnotations;
    private final ImmutableList<Parameter> parameters;

    public Constructor(SourcePosition sourcePosition, String displayName, List<JavaAnnotation> javaAnnotations,
            List<Parameter> parameters) {
        super(sourcePosition, displayName);
        this.javaAnnotations = ImmutableList.copyOf(javaAnnotations);
        this.parameters = ImmutableList.copyOf(parameters);
    }

    public Constructor(Node fromNode, List<JavaAnnotation> javaAnnotations, List<Parameter> parameters) {
        this(fromNode.getSourcePosition(), fromNode.getDisplayName(), javaAnnotations, parameters);
    }

    public static Constructor empty(SourcePosition sourcePosition, String displayName) {
        return new Constructor(sourcePosition, displayName, Collections.<JavaAnnotation>emptyList(),
                Collections.<Parameter>emptyList());
    }

    public static Constructor empty(Node fromNode) {
        return empty(fromNode.getSourcePosition(), fromNode.getDisplayName());
    }

    public Constructor withParameters(List<Parameter> newParameters) {
        return Iterables.elementsEqual(parameters, newParameters) ? this
                : new Constructor(this, javaAnnotations, newParameters);
    }

    public Constructor transformParameters(Function<Parameter, Parameter> parameterTransformer) {
        List<Parameter> newParameters = Util.map(parameters, parameterTransformer);
        return withParameters(newParameters);
    }

    public List<JavaAnnotation> getJavaAnnotations() {
        return javaAnnotations;
    }

    public List<Parameter> getParameters() {
        return parameters;
    }

    @Override
    public boolean equals(Object that) {
        return this == that || (that instanceof Constructor && equals((Constructor) that));
    }

    public boolean equals(Constructor that) {
        return equalsAbstractNode(that) && Objects.equal(getJavaAnnotations(), that.getJavaAnnotations())
                && Objects.equal(getParameters(), that.getParameters());
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(abstractNodeHashCode(), getJavaAnnotations(), getParameters());
    }
}