add a redefine statement for extending a grammar with additional tokens

adrian-thurston / colm

The Colm Programming Language

MIT License

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add a redefine statement for extending a grammar with additional tokens #114

Open adrian-thurston opened 4 years ago

adrian-thurston commented 4 years ago

Like TXL, we need a way to extend a grammar definition with additional productions. Critical for grammar modularity when prototyping new language features.