Rework @Throws
#3822
Rework @Throws
#3822
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| private fun ObjCExportCodeGenerator.generateExceptionTypeInfoArray(baseMethod: IrFunction): LLVMValueRef = | ||
| exceptionTypeInfoArrays.getOrPut(baseMethod) { | ||
| val throwsAnnotation = findThrowsAnnotation(baseMethod)!! | ||
| val types = (throwsAnnotation.getValueArgument(0) as IrVararg).elements |
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Frontend and psi2ir are supposed to guarantee this.
I will make cast failures more readable though.
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Somewhat improved.
| if (baseMethod !is IrSimpleFunction || baseMethod.overriddenSymbols.isEmpty()) { | ||
| baseMethod.annotations.findAnnotation(KonanFqNames.throws) | ||
| } else { | ||
| // Note: frontend ensures that all topmost overridden methods have equal @Throws annotations. |
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Can/shall we assert for that condition?
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Technically adding such an assertion should be easy.
However, considering binary compatibility (e.g. linking with other versions of libraries), it is actually possible that such a condition isn't met.
We don't have much choice in this case: either report compile (link?) error or handle this silently.
And I would strongly prefer to avoid reporting any errors from compiler, at least because we don't have proper stable infrastructure (in IR linker) to do this reliably. WDYT?
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OK, let's keep it silently processed so far. Maybe warning?
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Reporting warning makes sense, however we still don't have proper infrastructure for this. Generally I believe we should cease reporting compiler diagnostics from backend the way we are doing it now.
I expect this particular case to be quite rare, so it should be ok to postpone adding such a warning. Especially considering that I'm not completely sure about the details of new @Throws design, so it can change before 1.4.
It now enables propagation only for instances of listed classes.
SvyatoslavScherbina
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It now enables propagation only for instances of listed classes.