Expected Field Type Signature

Expected Field Type Signature

[Panicz Maciej Godek]

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I ran into a weird problem.
When I build a simple Android project, everything works fine.
But when I add my modules to this project, tgings complicate,
First, because the android activity needs to be compiled with the -P and -T
options in order to run properly, I compile the modules and the activity in
two separate passes: the modules are being compiled without the -P and -T
options (otherwise the interdependent modules can't see each other, ans
compilation results in an error)

But the second stage doesn't always pass - I've found that there are three
modules which -- if I include them in the build, cause the second stage to
terminate with the following error:

Exception in thread "main"
java.lang.reflect.GenericSignatureFormatError: Signature Parse error:
Expected Field Type Signature
	Remaining input: Z>;
	at java.base/sun.reflect.generics.parser.SignatureParser.error(SignatureParser.java:124)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:291)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:277)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeArgument(SignatureParser.java:420)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeArguments(SignatureParser.java:380)
	at java.base/sun.reflect.generics.parser.SignatureParser.parsePackageNameAndSimpleClassTypeSignature(SignatureParser.java:335)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseClassTypeSignature(SignatureParser.java:304)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:283)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:277)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeSignature(SignatureParser.java:469)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeSig(SignatureParser.java:188)
	at java.base/sun.reflect.generics.repository.FieldRepository.parse(FieldRepository.java:53)
	at java.base/sun.reflect.generics.repository.FieldRepository.parse(FieldRepository.java:42)
	at java.base/sun.reflect.generics.repository.AbstractRepository.<init>(AbstractRepository.java:74)
	at java.base/sun.reflect.generics.repository.FieldRepository.<init>(FieldRepository.java:49)
	at java.base/sun.reflect.generics.repository.FieldRepository.make(FieldRepository.java:66)
	at java.base/java.lang.reflect.Field.getGenericInfo(Field.java:109)
	at java.base/java.lang.reflect.Field.getGenericType(Field.java:276)
	at gnu.bytecode.Field.getType(Field.java:75)
	at gnu.expr.ModuleInfo.setupModuleExp(ModuleInfo.java:197)
	at kawa.standard.require.importDefinitions(require.java:313)
	at kawa.standard.ImportFromLibrary.handleImport(ImportFromLibrary.java:487)
	at kawa.standard.ImportFromLibrary.scanImportSet1(ImportFromLibrary.java:296)
	at kawa.standard.ImportFromLibrary.scanImportSet(ImportFromLibrary.java:264)
	at kawa.standard.ImportFromLibrary.scanForm(ImportFromLibrary.java:97)
	at kawa.lang.Translator.scanForm(Translator.java:1615)
	at kawa.lang.Translator.scanBody(Translator.java:1672)
	at kawa.standard.begin.scanForm(begin.java:23)
	at kawa.lang.Translator.scanForm(Translator.java:1615)
	at gnu.kawa.lispexpr.LispLanguage.parse(LispLanguage.java:117)
	at gnu.expr.Language.parse(Language.java:765)
	at gnu.expr.Language.parse(Language.java:759)
	at gnu.expr.Language.parse(Language.java:753)
	at kawa.repl.compileFiles(repl.java:768)
	at kawa.repl.processArgs(repl.java:451)
	at kawa.repl.main(repl.java:830)


When I use those modules for building or running the desktop client or
the terminal client (the build happens in a single pass), there is no
problem.

How do I even go about debugging this?

Re: Expected Field Type Signature

[Panicz Maciej Godek]

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Recently I managed to learn a bit more about this problem.
It appears when I define a parameter whose content type is a primitive type
(like boolean or char), as in, say:

(define p :: parameter[boolean] (make-parameter #f))

If I change the type to something else (like Object or any type defined by
define-simple-class), the problem disappears.
The problem is critical with the above compilation scheme (i.e. when a
module that depends on modules that contain the definition is compiled
separately). If all the modules are compiled all at once, Kawa somehow
manages to circumvent this problem (it doesn't crash) -- but even then,
during the dexing phase, the d8 tool complains:

Invalid signature 'Lgnu/mapping/LocationProc<Z>;' for field p.
Signature is ignored and will not be present in the output.
Parser error: Expected L, [ or T at position 28
Lgnu/mapping/LocationProc<Z>;
                           ^

So it seems to me that something might be wrong with code generation for
parameters with primitive types.



pt., 28 paź 2022 o 18:23 Panicz Maciej Godek <godek.maciek@gmail.com>
napisał(a):

> I ran into a weird problem.
> When I build a simple Android project, everything works fine.
> But when I add my modules to this project, tgings complicate,
> First, because the android activity needs to be compiled with the -P and
> -T options in order to run properly, I compile the modules and the activity
> in two separate passes: the modules are being compiled without the -P and
> -T options (otherwise the interdependent modules can't see each other, ans
> compilation results in an error)
>
> But the second stage doesn't always pass - I've found that there are three
> modules which -- if I include them in the build, cause the second stage to
> terminate with the following error:
>
> Exception in thread "main" java.lang.reflect.GenericSignatureFormatError: Signature Parse error: Expected Field Type Signature
> 	Remaining input: Z>;
> 	at java.base/sun.reflect.generics.parser.SignatureParser.error(SignatureParser.java:124)
> 	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:291)
> 	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:277)
> 	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeArgument(SignatureParser.java:420)
> 	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeArguments(SignatureParser.java:380)
> 	at java.base/sun.reflect.generics.parser.SignatureParser.parsePackageNameAndSimpleClassTypeSignature(SignatureParser.java:335)
> 	at java.base/sun.reflect.generics.parser.SignatureParser.parseClassTypeSignature(SignatureParser.java:304)
> 	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:283)
> 	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:277)
> 	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeSignature(SignatureParser.java:469)
> 	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeSig(SignatureParser.java:188)
> 	at java.base/sun.reflect.generics.repository.FieldRepository.parse(FieldRepository.java:53)
> 	at java.base/sun.reflect.generics.repository.FieldRepository.parse(FieldRepository.java:42)
> 	at java.base/sun.reflect.generics.repository.AbstractRepository.<init>(AbstractRepository.java:74)
> 	at java.base/sun.reflect.generics.repository.FieldRepository.<init>(FieldRepository.java:49)
> 	at java.base/sun.reflect.generics.repository.FieldRepository.make(FieldRepository.java:66)
> 	at java.base/java.lang.reflect.Field.getGenericInfo(Field.java:109)
> 	at java.base/java.lang.reflect.Field.getGenericType(Field.java:276)
> 	at gnu.bytecode.Field.getType(Field.java:75)
> 	at gnu.expr.ModuleInfo.setupModuleExp(ModuleInfo.java:197)
> 	at kawa.standard.require.importDefinitions(require.java:313)
> 	at kawa.standard.ImportFromLibrary.handleImport(ImportFromLibrary.java:487)
> 	at kawa.standard.ImportFromLibrary.scanImportSet1(ImportFromLibrary.java:296)
> 	at kawa.standard.ImportFromLibrary.scanImportSet(ImportFromLibrary.java:264)
> 	at kawa.standard.ImportFromLibrary.scanForm(ImportFromLibrary.java:97)
> 	at kawa.lang.Translator.scanForm(Translator.java:1615)
> 	at kawa.lang.Translator.scanBody(Translator.java:1672)
> 	at kawa.standard.begin.scanForm(begin.java:23)
> 	at kawa.lang.Translator.scanForm(Translator.java:1615)
> 	at gnu.kawa.lispexpr.LispLanguage.parse(LispLanguage.java:117)
> 	at gnu.expr.Language.parse(Language.java:765)
> 	at gnu.expr.Language.parse(Language.java:759)
> 	at gnu.expr.Language.parse(Language.java:753)
> 	at kawa.repl.compileFiles(repl.java:768)
> 	at kawa.repl.processArgs(repl.java:451)
> 	at kawa.repl.main(repl.java:830)
>
>
> When I use those modules for building or running the desktop client or the terminal client (the build happens in a single pass), there is no problem.
>
> How do I even go about debugging this?
>
>