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Closure Stylesheets is an extension to CSS that adds variables, functions, conditionals, and mixins to standard CSS. The tool also supports minification, linting, RTL flipping, and CSS class renaming.

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/*
 * Copyright 2011 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.common.css.compiler.ast;

import com.google.common.css.SourceCodeLocation;

/**
 * A node representing a mixin definition.
 *
 * A mixin definition defines parameterized declarations that can be
 * inserted with a mixin. For example:
 * 
 * {@code @defmixin} gradient(POS, HSL1, HSL2, HSL3, COLOR) {
 *   background-color: COLOR;
 *   background-image:
 *       -webkit-linear-gradient(POS, hsl(HSL1, HSL2, HSL3), COLOR);
 * }
 * 
 *
 * @author [email protected] (Florian Benz)
 */
public class CssMixinDefinitionNode extends CssAtRuleNode {
    private final String name;
    private final CssDeclarationBlockNode declarations;
    private final CssFunctionArgumentsNode arguments;

    public CssMixinDefinitionNode(String name, CssFunctionArgumentsNode arguments,
                                  CssDeclarationBlockNode declarations, SourceCodeLocation location) {
        super(Type.DEFMIXIN, new CssLiteralNode("defmixin"), declarations);
        this.setSourceCodeLocation(location);
        this.name = name;
        this.declarations = declarations;
        becomeParentForNode(declarations);
        this.arguments = arguments;
    }

    /**
     * Creates a new mixin definition node that is a deep copy of the given node.
     *
     * @param node node
     */
    public CssMixinDefinitionNode(CssMixinDefinitionNode node) {
        super(node);
        this.name = node.name;
        this.declarations = node.declarations.deepCopy();
        this.arguments = node.arguments.deepCopy();
    }

    @Override
    public CssNode deepCopy() {
        return new CssMixinDefinitionNode(this);
    }

    public String getDefinitionName() {
        return name;
    }

    public CssFunctionArgumentsNode getArguments() {
        return arguments;
    }

    @Override
    public CssDeclarationBlockNode getBlock() {
        // The type is ensured by the constructor.
        return (CssDeclarationBlockNode) super.getBlock();
    }
}