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Less language is an extension of css and less4j compiles it into regular css. It adds several dynamic features into css: variables, expressions, nested rules. Less4j is a port. The original compiler was written in JavaScript and is called less.js. The less language is mostly defined in less.js documentation/issues and by what less.js actually do. Links to less.js: * home page: http://lesscss.org/ * source code & issues: https://github.com/cloudhead/less.js

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package com.github.sommeri.less4j.core.ast;

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

import com.github.sommeri.less4j.core.ast.annotations.NotAstProperty;
import com.github.sommeri.less4j.core.parser.HiddenTokenAwareTree;
import com.github.sommeri.less4j.utils.ArraysUtils;

public class Document extends Directive {

  private String dialect;
  private List urlMatchFunction = new ArrayList();
  private GeneralBody body;

  public Document(HiddenTokenAwareTree token, String dialect) {
    super(token);
    this.dialect = dialect;
  }

  public boolean bubleUpWithoutChanges() {
    return false;
  }

  public GeneralBody getBody() {
    return body;
  }

  public void setBody(GeneralBody body) {
    this.body = body;
  }

  public String getDialect() {
    return dialect;
  }

  public void setDialect(String dialect) {
    this.dialect = dialect;
  }

  public List getUrlMatchFunctions() {
    return urlMatchFunction;
  }

  @Override
  @NotAstProperty
  public List getChilds() {
    List childs = new ArrayList(urlMatchFunction);
    childs.add(body);
    return childs;
  }

  @Override
  public ASTCssNodeType getType() {
    return ASTCssNodeType.DOCUMENT;
  }

  @Override
  public Document clone() {
    Document result = (Document) super.clone();
    result.urlMatchFunction = ArraysUtils.deeplyClonedList(urlMatchFunction);
    result.body = body==null? null : body.clone();
    result.configureParentToAllChilds();
    return result;
  }

  public void addUrlMatchFunctions(List urlMatchFunctions) {
    this.urlMatchFunction.addAll(urlMatchFunctions);
  }
}