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/*
 * Copyright 2015 the original author or authors.
 *
 * 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.gradle.model.dsl.internal.transform;

import com.google.common.collect.Lists;

import java.util.ArrayList;
import java.util.List;

public class InputReferences {
    private final List ownReferences = Lists.newArrayList();
    private final List nestedReferences = Lists.newArrayList();

    public List getOwnReferences() {
        return ownReferences;
    }

    public void ownReference(String path, int lineNumber) {
        ownReferences.add(new InputReference(path, lineNumber));
    }

    public boolean isEmpty() {
        return ownReferences.isEmpty() && nestedReferences.isEmpty();
    }

    public List getNestedReferences() {
        return nestedReferences;
    }

    public void addNestedReferences(InputReferences inputReferences) {
        nestedReferences.addAll(inputReferences.getOwnReferences());
        nestedReferences.addAll(inputReferences.getNestedReferences());
    }

    /**
     * Used from generated code, see {@link RuleVisitor#visitGeneratedClosure(org.codehaus.groovy.ast.ClassNode)}
     */
    @SuppressWarnings("unused")
    public void nestedReference(String path, int lineNumber) {
        nestedReferences.add(new InputReference(path, lineNumber));
    }

    public List getAllReferences() {
        List result = new ArrayList(ownReferences.size() + nestedReferences.size());
        result.addAll(ownReferences);
        result.addAll(nestedReferences);
        return result;
    }
}