webpack/lib/dependencies/ContextDependencyHelpers.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jade, coffee, css, less, ... and your custom stuff.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
var ContextDependencyHelpers = exports;

ContextDependencyHelpers.create = function(Dep, range, param, expr, options) {
	if(param.isWrapped() && param.prefix.isString()) {
		var prefix = param.prefix.string;
		var postfix = param.postfix.isString() ? param.postfix.string : "";
		var prefixRange = param.prefix.range;
		var valueRange = [prefixRange ? prefixRange[1] : param.range[0], param.range[1]];
		var idx = prefix.lastIndexOf("/");
		var context = ".";
		if(idx >= 0) {
			context = prefix.substr(0, idx);
			prefix = "." + prefix.substr(idx);
		}
		var regExp = new RegExp("^" +
			prefix.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&") +
			options.wrappedContextRegExp.source +
			postfix.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&") + "$");
		var dep = new Dep(context, options.wrappedContextRecursive, regExp, range, valueRange);
		dep.loc = expr.loc;
		dep.prepend = prefix;
		dep.critical = options.wrappedContextCritical && "a part of the request of a dependency is an expression";
		return dep;
	} else {
		var dep = new Dep(options.exprContextRequest, options.exprContextRecursive, options.exprContextRegExp, range, param.range);
		dep.loc = expr.loc;
		dep.critical = options.exprContextCritical && "the request of a dependency is an expression";
		return dep;
	}
};