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What’s New in the latest HFCD Build (2010-09-18)?

In the past couple of months, I managed to fix a few issues and add some enhancements to HFCD. They are now in the latest HFCD build (2010-09-18). Let me briefly describe what they are:

Exclusion Filters

The default behavior of the HFCD plugin is to upload all of the files in a Flex project to HFCD. This obviously is not ideal because a lot of these files are unnecessary for Flex compilations. So now there is a “Exclusion Filters” preference panel under “HellFire Compiler”. You can specify files and directories that you don’t want to be transferred to HFCD there. The default value is “.svn”, which you all know, is a directory created by Subversion. You could add a few more, e.g. .settings, bin-release, etc.

Launch Server

In order to use HFCD, a developer must start HFCD from Terminal (Mac OSX) or Command Prompt (Windows) before he/she starts Flex/Flash Builder. This is one extra step that some developers would like to skip. They would like to see Flex/Flash Builder to launch HFCD automatically. Well, as you know, the HFCD installer automatically setups a launch configuration in Flex/Flash Builder:

The HFCD plugin could simply launch HFCD based on this launch configuration. So now there is a “Launch Server” preference panel under “HellFire Compiler”. You could specify the name of the launch configuration in this preference panel. The HFCD plugin will take care of starting HFCD when the workbench loads and shutting down HFCD when the workbench closes. If you don’t specify a launch configuration name in this preference panel, it’s okay… that means you prefer to launch HFCD manually.

New <property> Tags in Auto-generated build.xml

Developers can use the “Generate Apache Ant build.xml” function to generate build.xml for their workspaces. It’s great for using such build.xml in CI. The paths in build.xml come from the compiler and therefore they are all fully-qualified paths. Usually, before you can use the build.xml file in your CI environment, you need to fix the paths. But the paths are everywhere in build.xml… making it quite cumbersome to fix. Now, there are 3 new <property> tags (${fb.workspace.dir}, ${user.home} and ${flex.sdk.dir}) for three of the most common paths. Hope this consolidation helps.

Turn Off HFCD Background Build During Debugging

Some developers like to make code changes while debugging. As you know, code changes trigger HFCD background builds. If you’re debugging, the background builds might slow down debugging. Now, the HFCD plugin detects whether debugging is in progress and instructs HFCD not to run background builds after receiving code changes.

HFCD “References” View

The primary function of the Flex compiler is to generate SWF output. But there are so many things that the compiler knows about. For example, given a definition, the compiler knows about its dependencies and its references. The dependencies are not difficult for developers to figure out because one can pretty much see that in the import statement list. However, it’s quite challenging to manually and accurately locate all of the references given a definition. One could use Flash Builder’s “References –> Workspace” feature but it takes extremely long time to execute at times. Now there is a new HFCD “References” View.

You simply open a file (MXML or AS). Set the editor active and open the “References” view. The view would ask HFCD for the dependencies and references for the definitions in the active editor window.


And of course the compiler knows the bytecode it generates for the classes in your projects. One way to learn ABC bytecode is to look at what the compiler generates for the code you write. Now with HFCD, if you highlight a few lines of your code in the active editor and open the HFCD “ABC” view, the HFCD plugin would ask HFCD to return the bytecode that corresponds to the code on the highlighted lines.

The screenshot below shows the bytecode for the AS code on line 1445-1451 in

The HFCD “ABC” view is work in progress (the output could be better though…).


Written by Clement Wong

September 19, 2010 at 11:28 pm

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