Re: gEDA-user: PCB format wishlist

[DJ Delorie <dj@xxxxxxxxxxx>]

> > We are NOT going with another position-determines-meaning file format.
>
> Why?

Consider the parser for the PIN object:

Pin [rX rY Thickness Clearance Mask Drill "Name" "Number" SFlags]
Pin (rX rY Thickness Clearance Mask Drill "Name" "Number" NFlags)
Pin (aX aY Thickness Drill "Name" "Number" NFlags)
Pin (aX aY Thickness Drill "Name" NFlags)
Pin (aX aY Thickness "Name" NFlags)

The parser only sees the syntax, not the semantics:

pin_hi_format
		: T_PIN '[' NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER STRING STRING flags ']'
pin_1.7_format
		: T_PIN '(' NUMBER NUMBER NUMBER NUMBER STRING STRING NUMBER ')'
pin_1.6.3_format
		: T_PIN '(' NUMBER NUMBER NUMBER NUMBER STRING NUMBER ')'
pin_newformat
		: T_PIN '(' NUMBER NUMBER NUMBER STRING NUMBER ')'
pin_oldformat
		: T_PIN '(' NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER STRING STRING NUMBER ')'

What happens if I want to add another parameter?


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