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build/node_modules/webpack-core/lib/CachedSource.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+function CachedSource(source) {
+	this._source = source;
+	this._cachedSource = undefined;
+	this._cachedSize = undefined;
+	this._cachedMaps = {};
+}
+module.exports = CachedSource;
+
+CachedSource.prototype.source = function() {
+	if(typeof this._cachedSource !== "undefined") return this._cachedSource;
+	return this._cachedSource = this._source.source();
+};
+
+CachedSource.prototype.size = function() {
+	if(typeof this._cachedSize !== "undefined") return this._cachedSize;
+	if(typeof this._cachedSource !== "undefined")
+		return this._cachedSize = this._cachedSource.length;
+	return this._cachedSize = this._source.size();
+};
+
+CachedSource.prototype.sourceAndMap = function(options) {
+	var key = JSON.stringify(options);
+	if(typeof this._cachedSource !== "undefined" && key in this._cachedMaps)
+		return { source: this._cachedSource, map: this._cachedMaps[key] };
+	else if(typeof this._cachedSource !== "undefined") {
+		return { source: this._cachedSource, map: this._cachedMaps[key] = this._source.map(options) };
+	} else if(key in this._cachedMaps) {
+		return { source: this._cachedSource = this._source.source(), map: this._cachedMaps[key] };
+	}
+	var result = this._source.sourceAndMap(options);
+	this._cachedSource = result.source;
+	this._cachedMaps[key] = result.map;
+	return { source: this._cachedSource, map: this._cachedMaps[key] };
+};
+
+CachedSource.prototype.node = function(options) {
+	return this._source.node(options);
+};
+
+CachedSource.prototype.listMap = function(options) {
+	return this._source.listMap(options);
+}
+
+CachedSource.prototype.map = function(options) {
+	if(!options) options = {};
+	var key = JSON.stringify(options);
+	if(key in this._cachedMaps)
+		return this._cachedMaps[key];
+	return this._cachedMaps[key] = this._source.map();
+};
+
+CachedSource.prototype.updateHash = function(hash) {
+	this._source.updateHash(hash);
+};