text: /*
   MIT License http://www.opensource.org/licenses/mit-license.php
   Author Tobias Koppers @sokra
   */
  "use strict";
  
  const DependenciesBlockVariable = require("./DependenciesBlockVariable");
  
  /** @typedef {import("./ChunkGroup")} ChunkGroup */
  
  class DependenciesBlock {
  	constructor() {
  		this.dependencies = [];
  		this.blocks = [];
  		this.variables = [];
  		// TODO remove this line, it's wrong
  		/** @type {ChunkGroup=} */
  		this.chunkGroup = undefined;
  	}
  
  	addBlock(block) {
  		this.blocks.push(block);
  		block.parent = this;
  	}
  
  	addVariable(name, expression, dependencies) {
  		for (let v of this.variables) {
  			if (v.name === name && v.expression === expression) {
  				return;
  			}
  		}
  		this.variables.push(
  			new DependenciesBlockVariable(name, expression, dependencies)
  		);
  	}
  
  	addDependency(dependency) {
  		this.dependencies.push(dependency);
  	}
  
  	removeDependency(dependency) {
  		const idx = this.dependencies.indexOf(dependency);
  		if (idx >= 0) this.dependencies.splice(idx, 1);
  	}
  
  	updateHash(hash) {
  		for (const dep of this.dependencies) dep.updateHash(hash);
  		for (const block of this.blocks) block.updateHash(hash);
  		for (const variable of this.variables) variable.updateHash(hash);
  	}
  
  	disconnect() {
  		for (const dep of this.dependencies) dep.disconnect();
  		for (const block of this.blocks) block.disconnect();
  		for (const variable of this.variables) variable.disconnect();
  	}
  
  	unseal() {
  		for (const block of this.blocks) block.unseal();
  	}
  
  	hasDependencies(filter) {
  		if (filter) {
  			for (const dep of this.dependencies) {
  				if (filter(dep)) return true;
  			}
  		} else {
  			if (this.dependencies.length > 0) {
  				return true;
  			}
  		}
  
  		for (const block of this.blocks) {
  			if (block.hasDependencies(filter)) return true;
  		}
  		for (const variable of this.variables) {
  			if (variable.hasDependencies(filter)) return true;
  		}
  		return false;
  	}
  
  	sortItems() {
  		for (const block of this.blocks) block.sortItems();
  	}
  }
  
  module.exports = DependenciesBlock;
  