CodeNode.js
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	/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
	*/
	"use strict";

	const getNumberOfLines = require("./helpers").getNumberOfLines;
	const getUnfinishedLine = require("./helpers").getUnfinishedLine;

	class CodeNode {
	constructor(generatedCode) {
	this.generatedCode = generatedCode;
	}

	clone() {
	return new CodeNode(this.generatedCode);
	}

	getGeneratedCode() {
	return this.generatedCode;
	}

	getMappings(mappingsContext) {
	const lines = getNumberOfLines(this.generatedCode);
	const mapping = Array(lines+1).join(";");
	if(lines > 0) {
	mappingsContext.unfinishedGeneratedLine = getUnfinishedLine(this.generatedCode);
	if(mappingsContext.unfinishedGeneratedLine > 0) {
	return mapping + "A";
	} else {
	return mapping;
	}
	} else {
	const prevUnfinished = mappingsContext.unfinishedGeneratedLine;
	mappingsContext.unfinishedGeneratedLine += getUnfinishedLine(this.generatedCode);
	if(prevUnfinished === 0 && mappingsContext.unfinishedGeneratedLine > 0) {
	return "A";
	} else {
	return "";
	}
	}
	}

	addGeneratedCode(generatedCode) {
	this.generatedCode += generatedCode;
	}

	mapGeneratedCode(fn) {
	const generatedCode = fn(this.generatedCode);
	return new CodeNode(generatedCode);
	}

	getNormalizedNodes() {
	return [this];
	}

	merge(otherNode) {
	if(otherNode instanceof CodeNode) {
	this.generatedCode += otherNode.generatedCode;
	return this;
	}
	return false;
	}
	}

	module.exports = CodeNode;