[Laszlo-dev] For Review: Change 20071121-dda-W Summary: Initial compiler changes to support SWF9

[Donald Anderson]

Change 20071121-dda-W by dda at freddie.local on 2007-11-21 13:45:03 EST
     in /Users/dda/laszlo/src/svn/openlaszlo/branches/devildog
     for http://svn.openlaszlo.org/openlaszlo/branches/devildog

Summary: Initial compiler changes to support SWF9

New Features: SWF9 platform support in compiler only

Bugs Fixed: LPP-5064, LPP-5020, LPP-5021, LPP-5022

Technical Reviewer: ptw
QA Reviewer: (pending)
Doc Reviewer: (pending)

Documentation:  None yet, this is a development branch.
Probably will refer to ECMAScript document for any new language  
features.

Release Notes:  None yet, this will be sensible to do when we are
further along, and not working in a development branch.

Details:
This is the first cut of changes to support SWF9.  The essential
change is to support creation of named classes, separate file  
compilation,
running an external compiler and error line number tracking.

Note this change is in the devildog branch.  Devildog was recently
merged with trunk, so these changes are 'up to date' with respect
to trunk.

This is ongoing work, there are about a dozen TODOs marked in the code
to be done as next steps.  There are also a clear number of other  
items to
accomplish: make this work (do the SWF9 compilation) when invoked  
from a browser,
show errors to browsers, handle more interesting programs, support more
language features (e.g. final), integrate with SWF9 kernel and  
runtime library work,
provide a compilation mode for building the runtime library (?), etc.

Tests:
To run the tests in an arbitrary system, you need:
   1)  A flash9 compiler.  For testing, we are using the Flex  
Compiler Shell,
       calling the compc and mxmlc scripts.  In theory, another  
compilation
       system could be used with some small programming changes; but  
at the
       moment, our code is not independent of the command line
       interface provided by the flex tools.  The location of the
       flex tools is listed as properties in lps.properties:
           compiler.swf9.lib.builder=../../flex2/bin/compc
           compiler.swf9.app.builder=../../flex2/bin/mxmlc
       After downloading flex, install it anywhere, and create a  
symbolic link
       from lps/flex2 to the top of the installation tree in order to
       work with the properties given above.

   2)  A SWF9 runtime, if you want to produce a .SWF output file.
       For the moment, I am testing with a small 'fake' runtime
       that defines a number of classes used by small programs in
       a trivial way.  So trivial in fact, that the programs produced
       compile and link but do not do anything useful when they run.
       This runtime can be provided if needed for test scaffolding,
       but is not included in this submission.  We expect the runtime
       to be installed into lps/inclues/lfc/LFC9.swc .  If it is missing
       the compilation will fail.

Currently, I am only running the compiler via lzc, and all compilation
errors appear on stderr.  To show warnings as well, change in  
lps.properties:
    compiler.swf9.warnings=true
At the moment, there are many warnings due to untyped variables.

Given the setup above, the following trivial programs
have been compiled/linked to SWF9 output files (using lzc):
    test/hello.lzx
    test/trycatch.lzx
    test/typevar.lzx

Perhaps others in test will also compile, but probably only if they
are limited to canvas, text, view elements.  The compilation of more
interesting programs is limited by:
   1)  the use of additional parts of the laszlo runtime not handled
       by the fake runtime.
   2)  some code emitted by the tag compiler that is inappropriate  
for SWF9
   3)  (possibly) some other language related problems.

Going forward, it is 2 and 3 that we are interested in, some progress  
on 1
may be made but only to expose problems in 2 and 3.

Files:
M      WEB-INF/lps/config/lps.properties
M      WEB-INF/lps/server/src/org/openlaszlo/sc/ReferenceCollector.java
M      WEB-INF/lps/server/src/org/openlaszlo/sc/JavascriptGenerator.java
M      WEB-INF/lps/server/src/org/openlaszlo/sc/ScriptCompiler.java
A      WEB-INF/lps/server/src/org/openlaszlo/sc/SWF9Generator.java
M      WEB-INF/lps/server/src/org/openlaszlo/sc/CommonGenerator.java
A      WEB-INF/lps/server/src/org/openlaszlo/sc/ 
SWF9ParseTreePrinter.java
M      WEB-INF/lps/server/src/org/openlaszlo/sc/Compiler.java
M      WEB-INF/lps/server/src/org/openlaszlo/sc/CodeGenerator.java
M      WEB-INF/lps/server/src/org/openlaszlo/sc/Translator.java
A      WEB-INF/lps/server/src/org/openlaszlo/sc/ParseTreePrinter.java
A      WEB-INF/lps/server/src/org/openlaszlo/sc/TranslationUnit.java
M      WEB-INF/lps/server/src/org/openlaszlo/compiler/ClassCompiler.java
M      WEB-INF/lps/server/src/org/openlaszlo/compiler/ViewCompiler.java
M      WEB-INF/lps/server/src/org/openlaszlo/compiler/ 
ElementCompiler.java
M      WEB-INF/lps/server/src/org/openlaszlo/compiler/LibraryWriter.java
M      WEB-INF/lps/server/src/org/openlaszlo/compiler/NodeModel.java
M      WEB-INF/lps/server/src/org/openlaszlo/compiler/ 
ScriptElementCompiler.java
M      WEB-INF/lps/server/sc/src/org/openlaszlo/sc/Parser.jjt
M      WEB-INF/lps/server/sc/src/org/openlaszlo/sc/parser/ 
SimpleNode.java
M      WEB-INF/lps/server/sc/src/org/openlaszlo/sc/parser/ 
ASTOperator.java
M      WEB-INF/lps/server/sc/src/org/openlaszlo/sc/parser/ 
ASTLiteral.java
M      WEB-INF/lps/server/sc/src/org/openlaszlo/sc/parser/ 
ASTIdentifier.java

Changeset: http://svn.openlaszlo.org/openlaszlo/patches/20071121-dda- 
W.tar



--

Don Anderson
Java/C/C++, Berkeley DB, systems consultant

Voice:  617-547-7881
Email:  dda at ddanderson.com
WWW:    http://www.ddanderson.com