New feature: basic Ajax suggestion for tags and implementation of Dojo toolkit

git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f

1 files changed, 54 insertions, 0 deletions

diff --git a/includes/js/dojox/lang/functional/listcomp.js b/includes/js/dojox/lang/functional/listcomp.js
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+++ b/includes/js/dojox/lang/functional/listcomp.js
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+if(!dojo._hasResource["dojox.lang.functional.listcomp"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.lang.functional.listcomp"] = true;
+dojo.provide("dojox.lang.functional.listcomp");
+
+// This module adds high-level functions and related constructs:
+//	- list comprehensions similar to JavaScript 1.7
+
+// Notes:
+//	- listcomp() produces functions, which after the compilation step are 
+//		as fast as regular JS functions (at least theoretically).
+
+(function(){
+	var g_re = /\bfor\b|\bif\b/gm;
+
+	var listcomp = function(/*String*/ s){
+		var frag = s.split(g_re), act = s.match(g_re),
+			head = ["var r = [];"], tail = [];
+		for(var i = 0; i < act.length;){
+			var a = act[i], f = frag[++i];
+			if(a == "for" && !/^\s*\(\s*(;|var)/.test(f)){
+				f = f.replace(/^\s*\(/, "(var ");
+			}
+			head.push(a, f, "{");
+			tail.push("}");
+		}
+		return head.join("") + "r.push(" + frag[0] + ");" + tail.join("") + "return r;";	// String
+	};
+
+	dojo.mixin(dojox.lang.functional, {
+		buildListcomp: function(/*String*/ s){
+			// summary: builds a function from a text snippet, which represents a valid
+			//	JS 1.7 list comprehension, returns a string, which represents the function.
+			// description: This method returns a textual representation of a function 
+			//	built from the list comprehension text snippet (conformant to JS 1.7). 
+			//	It is meant to be evaled in the proper context, so local variable can be 
+			//	pulled from the environment.
+			return "function(){" + listcomp(s) + "}";	// String
+		},
+		compileListcomp: function(/*String*/ s){
+			// summary: builds a function from a text snippet, which represents a valid
+			//	JS 1.7 list comprehension, returns a function object.
+			// description: This method returns a function built from the list 
+			//	comprehension text snippet (conformant to JS 1.7). It is meant to be 
+			//	reused several times.
+			return new Function([], listcomp(s));	// Function
+		},
+		listcomp: function(/*String*/ s){
+			// summary: executes the list comprehension building an array.
+			return (new Function([], listcomp(s)))();	// Array
+		}
+	});
+})();
+
+}