Just a quick check on the highly unlikely off-chance that I'm going to waste my time if I start planning how to create one myself, has anyone seem a GUI grammar editor?
By which I mean something that presents a visual flow-chart style interface - similar to a mind-map but tailored towards grammar concepts (tokens,rules,alternation,repetition,etc)?
What I want is a quick-and-easy way to plan and restructure a grammar definition, in a visual format (similar style to images here), which can be exported as images, maybe an interactive HTML map, and of course as actual BNF/EBNF grammars.
(What I'm not looking for is a way to generate images from an existing text-based grammar, which appears to be the limit of what existing stuff does.)
And - given that I'm not expecting anyone to say "oh yeah, here's one" - does anyone have any tips on a good way to approach this?
Current plan is to rip apart this js-mindmap project and see if I can do what I want with it.
I found DiaGen which is a Diagram Editor Generator, for creating editors for specific customised types of diagrams, which sounded promising.
It even has an example of a Syntax Diagram Editor:
Which might have been good if it wasn't such a clunky piece of shite, and a stereotypical example of a unresponsive Java GUI, and lacking in basic features (like keyboard shortcuts).
Still, if I search more for "syntax diagram editor" I might actually find a better version of what I'm looking for. :)
