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Go target, ErrorStrategy, broken interface #2528

dtgorski opened this issue Apr 8, 2019 · 0 comments


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commented Apr 8, 2019


while playing with Go and ANTLR, I stumbled across the ErrorStrategy interface in runtime/Go/antlr/error_strategy.go:

type ErrorStrategy interface {
        reset(Parser)                              // <--
        RecoverInline(Parser) Token
        Recover(Parser, RecognitionException)
        inErrorRecoveryMode(Parser) bool           // <--
        ReportError(Parser, RecognitionException)

This "interface" defines two private (not package-exportable) methods. Hence it is impossible for any other Go package to satisfy this interface and provide an other implementation.

Is there any chance to rewrite the Go target that way, that either the "private" methods are dropped from the ErrorStrategy interface or made public by writing their names in uppercase letters?

regards dtg

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