So if I understand you, the notion of traits is a SWF thing? The AST has
different representations maybe like member, variable, function?
On 11/29/12 9:42 AM, "Michael Schmalle" <apa...@teotigraphix.com> wrote:
> Quoting Alex Harui <aha...@adobe.com>:
>
>> Very nice. Have you figured out the role of the generated CMCEmitter in
>> this process?
>
> Yes,
>
> The CmcJSEmitter (autogenerated by cmc-js.jbg) is used to traverse the
> ISWF that is created.
>
> The CmcJSEmitter and JSGeneratingReducer are created in the
> JSGenerator constructor.
>
> The actual CmcJSEmitter is used during the
> JSClassDirectiveProcessor.delcareVariable() etc. methods.
>
> Basically the processor is using the emitter to create SWF
> instructions that ultimately end up creating class traits. Once the
> tratis are created, they just keep getting recursively visited and
> more instructions created.
>
> So it's like
>
> - JSCompilationUnit.processABCBytesRequest()
> - handleABCBytesRequest()
> - JSGenerator.generate()
> - then see below ....
>
> When it gets to methods called declarePackage() for instance, block
> code instructions are created using the cmc emitter. Traits are then
> created based of them.
>
> For FalconJS this process is totally bound to SWF format.
>
> This was my point. For any developer to fix bugs here they have to
> know the SWF format. Which I don't.
>
> This is why I propsed another solution using pure AST like Jangaroo does.
>
> I am not skilled enough to understand the trade offs currently. But I
> am going to try and see if I can create the same JS code using a
> different algorithm.
>
> Mike
>
>
>
>>
>> On 11/29/12 7:30 AM, "Michael Schmalle" <apa...@teotigraphix.com> wrote:
>>
>>> Hi,
>>>
>>> For those asking question about "where to alter" code, it's not pretty
>>> but I think I know exactly what is going on now.
>>>
>>> If you can understand below, you will now have some insight to where
>>> and how the JS code actually gets created.
>>>
>>>
>>> ! Call the compiler load config compile().
>>>
>>>
>>> JSGenerator.generate() - creates the package, class, member traits
>>>
>>> - DirectiveProcessor.processNode(IFileNode)
>>> - recusrsivly fill traits
>>>
>>> -----------------------------------------------------
>>>
>>> Basically a snippet of the recursion;
>>>
>>> DirectiveProcessor.processNode(IFileNode)
>>> - declarePackage(PackageNode)
>>> - emitter.visitPackage(packageName)
>>> - data.registerPackage(packageName)
>>> - super.declarePackage(PackageNode)
>>> - DirectiveProcessor.traverse(p.getScopedNode()) <- ClassNode (class
>>> {})
>>> - for each ClassNode.getChild(i)
>>> - processNode(ScopedBlockNode)
>>> - JSGlobalDirectiveProcessor.declareClass(ClassNode)
>>> - verifyClassModifiers(ClassNode)
>>> - skins
>>> - JSClassDirectiveProcessor cp =
>>> backend.createClassDirectiveProcessor()
>>> - cp.traverse(ClassNode.getScopedNode()) <- TypeScope
>>> - for each TypeScope.getChild(i)
>>> - processNode(TypeScope)
>>> -
>>> JSGlobalDirectiveProcessor.declareFunction(FunctionNode)
>>>
>>>
>>> --------------------------------------------------------
>>>
>>> !!!!
>>> JavaScript source code creation after class traits have been traversed
>>> and created;
>>>
>>>
>>> JSEmiter.emit()
>>> - emitClass(EmitterClassVisitor)
>>> - IClassDefinition = getDefinition(ii.name)
>>> - write class JSDoc
>>>
>>>
>>>
>>> - JSEmitter.emitClass()
>>> - Line: 3267 - 3269 is What creates a class
>>> - "MainCode=adobe.extend("MainCode",Object,{ ... });"
>>>
>>>
>>>
>>> - JSEmitter.emitInstanceTraits() is then called to write out the
>>> class traits
>>> - emitTraits() is then called to do the specific if the closure
>>> compiler flag is not set
>>> 1. emitCtor() emit constructor
>>> - emit comma
>>> 2. emit all variables before methods
>>> - assembles the code "MainCode.foo"
>>> - warns if there is a private namespace collision
>>> -
>>> 3. emit all methods other than constructor
>>> - emit ",\n"
>>> - emitMethod()
>>> - emitJSDocForMethod()
>>> - write("\tget_baz")
>>> - write(" : ") <- assignmentOp
>>> - write("function(")
>>> - emitParameters(methodInfo)
>>> - write("baz")
>>> - write(")")
>>> - if (returnType != null)
>>> - write(JSDoc for return type)
>>> - if interface method
>>> - write(" {};\n")
>>> - else
>>> - write("\n")
>>> - write(" {")
>>> - write("\n")
>>> - emitMethodBody()
>>> ... you get the drift
>>> - write(" }")
>>>
>>> - After all traits are written, control flow goes back to
>>> JSEmitter.emitClass() line 3269
>>> - write("\n});\n\n") // end class
>>> - add _CLASS member to instance
>>> - add JSDoc for prototype._CLASS
>>> - write("MainCode.prototype._CLASS = MainCode;\n")
>>>
>>> It will then go onto
>>> - emitClassInfo()
>>> - emitNamespaceInfo()
>>> - emitJSONInfo()
>>>
>>> if (JSSharedData.JS_FRAMEWORK_NAME)
>>> - emitFrameworkInit();
>>>
>>> It will then finally emit register class
>>> - "adobe.classes.MainCode=MainCode;"
>>>
>>> ---------------
>>> MainCode._PACKAGE=adobe.globals;MainCode._NAME="MainCode";
>>> MainCode._FULLNAME="MainCode";
>>> MainCode._SUPER=Object;
>>> MainCode._NAMESPACES={"foo::2":!0,"bar::7:MainCode":!0,"baz::2":!0,"baz::2":
>>> !0
>>> };
>>> adobe.classes.MainCode=MainCode;
>>> ---------------
>>>
>>> Mike
>>>
>>>
>>>
>>>
>>
>> --
>> Alex Harui
>> Flex SDK Team
>> Adobe Systems, Inc.
>> http://blogs.adobe.com/aharui
>>
>>
--
Alex Harui
Flex SDK Team
Adobe Systems, Inc.
http://blogs.adobe.com/aharui
