Announcing the as3parser-framework opensource project
The as3parser-framework is a project culminating from over 5 years of actionscript3 lexing, scanning, tokenizing and parsing observations. This framework is fully independent of the Flex framework or any other library for that matter. A brief list of inclusions;
- AS3Scanner, AS3Tokenizer, AS3Parser (full AST including block ast)
- MXMLScanner, MXMLParser (full AST)
- ASDocScanner, ASDocParser (full AST)
- A Complete As3 DOM decorator framework wrapping the abstract parser node
- 100’s of unit tests covering all classes
Thanks to the PMD project in java, a rock solid as3 recursive decent parser was ported. All the other scanners and parser I created myself and tested0. The DOM framework comes mostly from the ASDoc documentor I created in java a couple years ago, that I still use when documenting all of my product components.
Here is the source code;
http://github.com/teotigraphix/as3parser-framework
All the code is released under the Apache 2 license.
How would you like to parse as3/mxml string data, or an .as file or an .mxml file from an AIR application or browser application? Well now you can with full AST.
The following is an example of the decorator node DOM.
var sourceFile:IAS3SourceFile = NodeFactory.instance. createSourceFile(source, "/home/src/my/domain/internal.as", "/home/src") as IAS3SourceFile; var compilationNode:ICompilationNode = sourceFile.buildAst(); trace(sourceFile.fileName); trace(sourceFile.compilationNode.packageNode.name); trace(sourceFile.compilationNode.packageNode.qualifiedName); trace(sourceFile.compilationNode.packageNode.typeNode.methods[0].name); trace(sourceFile.compilationNode.packageNode.typeNode.methods[0].parameters[0].name); trace(sourceFile.compilationNode.packageNode.typeNode.methods[0].comment.shortDescription); trace(sourceFile.compilationNode.packageNode.typeNode.methods[0].comment.getDocTags("see"));
I have a large Swiz project that will be using this framework, stay tuned.
Mike
For giggles, here is a class file it digests easily and converts into AST;
/*fpkg*/package foo.bar { import pkg.Stuff; import mx.core.mx_internal; use namespace mx_internal; /** * Class meta. */ [Event(name="myEvent",type="flash.events.Event")] /** * java doc */ public class /*f*/Blat extends Bing implements Febraz, Goo { private var data:String; private var data:* = womble(); /** asdoc for property */ public function get property():String{return null;} /** @private */ public function set property(value:String):void{} public function Blat() { super(); return; } [Annotate] [Basic()] /** * Meta doccomment. */ [String("foo")] [Num(1)] [Bool(false)] [Arg(foo="bar")] [List(foo="bar", that=2)] [Event("alpha")] [Event("beta")] private var x:String = 1; /** javadoc? */ public static function func(arg:Number, foo=null, ...rest):Boolean { default xml namespace = "http://example.com/"; for (var b=1;b<=10;b++) { bar(); } for (;;) { break; } for (var g in blah) { r(); } for each (var g in blah) { r(); } if (h==undefined) { throw new Error(); } else { /* bar */ } if (a) b(); while (false) v(); do { continue; } while (m); switch (blah) { case 3: x(); y(); case 4: next; default: x(); y(); } try { with (scope) foo(); } catch (e) { var a=b?(x+y):new Foo(); } catch (f:Error) { const X=new Thing(); } try { foo(); } finally { ff = function(y, z) { }; } l=[1,'2']; xx = doc.ns::name; m={a:null}; // TODO: hex = 0x3; d = <foo bar="{blat}"/>; d = <foo> <bar/> </foo>; r = /regexp/; a = b.(@c); zz = a..b; zzz = a..@*; zzzz = a..@["foo"+b]; /* unary expressions */ --a; ++a; a--; a++; a = -a; return a.call(i.j*k, l[m]); } } } // trailing comment /** * internal class. */ class InternalClass { private var foo:int = {}; public function InternalClass() { } } // trailing comment /** * internal function. */ function myFunc(arg:int=0):Vector.<int> { return null; }
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