/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
var SourceNode = require("source-map").SourceNode;
var SourceMapConsumer = require("source-map").SourceMapConsumer;
var SourceListMap = require("source-list-map").SourceListMap;
var Source = require("./Source");

function isSplitter(c) {
	switch(c) {
		case 10: // \n
		case 13: // \r
		case 59: // ;
		case 123: // {
		case 125: // }
			return true;
	}
	return false;
}

function _splitCode(code) {
	var result = [];
	var i = 0;
	var j = 0;
	for(; i < code.length; i++) {
		if(isSplitter(code.charCodeAt(i))) {
			while(isSplitter(code.charCodeAt(++i)));
			result.push(code.substring(j, i));
			j = i;
		}
	}
	if(j < code.length)
		result.push(code.substr(j));
	return result;
}

function OriginalSource(value, name) {
	Source.call(this);
	this._value = value;
	this._name = name;
}

module.exports = OriginalSource;

OriginalSource.prototype = Object.create(Source.prototype);
OriginalSource.prototype.constructor = OriginalSource;

OriginalSource.prototype.source = function() {
	return this._value;
};

require("./SourceAndMapMixin")(OriginalSource.prototype);

OriginalSource.prototype.node = function(options) {
	options = options || {};
	var sourceMap = this._sourceMap;
	var value = this._value;
	var name = this._name;
	var lines = value.split("\n");
	var node = new SourceNode(null, null, null,
		lines.map(function(line, idx) {
			var pos = 0;
			if(options.columns === false) {
				var content = line + (idx != lines.length - 1 ? "\n" : "");
				return new SourceNode(idx + 1, 0, name, content);
			}
			return new SourceNode(null, null, null,
				_splitCode(line + (idx != lines.length - 1 ? "\n" : "")).map(function(item) {
					if(/^\s*$/.test(item)) return item;
					var res = new SourceNode(idx + 1, pos, name, item);
					pos += item.length;
					return res;
				})
			);
		})
	);
	node.setSourceContent(name, value);
	return node;
};

OriginalSource.prototype.listMap = function(options) {
	return new SourceListMap(this._value, this._name, this._value)
};

OriginalSource.prototype.updateHash = function(hash) {
	hash.update(this._value);
};
