[antlr-interest] Standard library functions: how to??

[Mark Lentczner]

On Apr 21, 2004, at 2:39 PM, Bharath S wrote:

> For example, if the user inputs a
> statement "x := abs(y);", should I write the abs() function as an 
> action in
> the grammar, when the "abs" keyword is encountered?

Unless abs(y) needs to be handled very differently than a call to a 
user function, foo(y), then no, the parser should know nothing about 
it.  Standard library functions (assuming the user doesn't need some 
sort of declaration to import them), should be added to your symbol 
tables before you begin the interpretation or compilation step.

	- Mark

Mark Lentczner
markl at wheatfarm.org
http://www.wheatfarm.org/



 
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