loading SWC bytecode into redtamarin

now when you use Flex SDk 4.5.x to generate a SWC
you obtain an extra class looking like

_050c3e6ed85dab3426a1c292e29d382819826b144ad91294b679b8ff99f20d8b_flash_display_
Sprite

*where does this come from ?*

when /compiler/src/java/flex2/tools/Compc.java kick in
{{{
            List<CompilationUnit> units =
                CompilerAPI.compile(fileSpec, sourceList, classes.values(), sourcePath, resources, bundlePath,
                                    swcContext, mappings, configuration, compilers,
                                    new CompcPreLink(rbFiles, configuration.getIncludeResourceBundles(), false),
                                    configuration.getLicensesConfiguration().getLicenseMap(), sources);
}}}

this call to /compiler/src/java/flex2/tools/CompcPreLink.java
is there to generate extra code to deal with RSL
{{{
    private void codegenRootClass(List<Source> sources, List units, ResourceContainer resources,
                        CompilerSwcContext swcContext, Configuration configuration,
                        List<DefineTag> fonts, String uniqueRootClassName)
    {
        String rootClassName = "_" + uniqueRootClassName + "_";
        String sourceText = null;

        if (fonts.size() == 0)
        {
            rootClassName += "flash_display_Sprite";
            sourceText = codegenRSLRootClass("flash.display.Sprite", rootClassName);

        }
        else
        {
            rootClassName += "mx_core_FlexModuleFactory";
            sourceText = PreLink.codegenModuleFactory("flash.display.Sprite", 
//...
}}}

and later
{{{
    /**
     * Generate a root class for an RSL with wrapper calls to Security.allowDomain() and
     * Security.allowInsecureDomain(). The purpose is to allow callers to trust the RSL SWFs
     * in the same way they can trust an application swf.
     * 
     * @param base The class root class extends.
     * @param rootClassName
     * @return The root class actionscript class definition as a String.
     */
    private static String codegenRSLRootClass(String base,
            String rootClassName)
    {
        String lineSep = System.getProperty("line.separator");
        String[] codePieces = new String[]
        {
            "package", lineSep,
            "{", lineSep, lineSep,
            "import flash.display.Sprite;", lineSep,
            "import flash.system.Security;", lineSep, lineSep,
            "/**", lineSep,
            " *  @private", lineSep,
            " */", lineSep,
            "[ExcludeClass]", lineSep,
            "public class ", rootClassName, lineSep,
            "    extends ", base, lineSep,
            "{", lineSep,
            "    public function ", rootClassName, "()", lineSep,
            "    {", lineSep,
            "        super();", lineSep,
            "    }", lineSep, lineSep,
            PreLink.codegenRSLSecurityWrapper(true, lineSep),
            "}", lineSep, lineSep,
            "}", lineSep,
        };

        return StringJoiner.join(codePieces, null);
    }
}}}

this also call /compiler/src/java/flex2/tools/PreLink.java
{{{
    /**
     * Generate flash player Security wrapper calls.
     * 
     * @param lineSep
     * @return
     */
    static String codegenRSLSecurityWrapper(boolean isLibraryCompile, String lineSep)
    {
        if (!isLibraryCompile)
            return "";

        String[] code = {               
                "   /*", lineSep,
                "    *  Calls Security.allowDomain() for the SWF associated with this RSL", lineSep,
                "    *  @param a list of domains to trust. This parameter is passed to Security.allowDomain().", lineSep,
                "    */", lineSep,
                "   public function allowDomainInRSL(... domains):void", lineSep,
                "   {", lineSep,
                "       Security.allowDomain.apply(null, domains);", lineSep,
                "   }", lineSep, lineSep,
                "   /*", lineSep,
                "    *  Calls Security.allowInsecureDomain() for the SWF associated with this RSL", lineSep,
                "    *  @param a list of domains to trust. This parameter is passed to Security.allowInsecureDomain().", lineSep,
                "    */", lineSep,
                "   public function allowInsecureDomainInRSL(... domains):void", lineSep,
                "   {", lineSep,
                "       Security.allowInsecureDomain.apply(null, domains);", lineSep,
                "   }", lineSep,
        };

        return StringJoiner.join(code, null);
    }
}}}

*How to support that in redtamarin ?*

We need to have the definitions for
  * *flash.display.Sprite*
  * *flash.system.Security*

and support at least *Security.allowDomain* and *Security.allowInsecureDomain*

Let be sure we do that in *avmglue* and then that each time we want to read the 
bytecode from a SWC that avmglue is loaded first.
Original issue reported on code.google.com by zwetan on 24 Sep 2011 at 9:00
kolombet / maashaack

loading SWC bytecode into redtamarin #199
