[REBOL] Parse to Object Mapping question.
From: steve:shireman:semaxwireless at: 2-Jul-2001 16:58
I expect there might be a simple document to explain this, so here is my
question:
I want to parse a message, and stuff it into an object if the parsing is
valid.
Ideally, the structure of the object could be used to create the parsing
rule.
Here is a simple example, soas not to give away my project:
Message-in-ASCII: "RECTANGLE 5.0 CM by 8.0 CM"
Geometric-shape: make object![
shape-type: " "
size-x: 1.0
size-y: 1.0
units: "inches"
]
a manually created parse rule might be--
shape-type: [some char]
size: [some digits "." some digits]
units ["cm" | "in"]
parse-shape-rule [ shape-type spacer size units "by" size units ]
so that:
parse Message-in-ASCII parse-shape-rule ;should give true if no mistakes
instead of the above, it would be nice to have something like:
parse message-in-ASCII [ fit Geometric-shape ] ;so object provides
parsing rules automatically
I hope this is clear enough.
Is there already a parse mechanism to fill in an object like this?
Thanks,
Steve Shireman
