[R] how R parses expression?

Mulholland, Tom Tom.Mulholland at dpi.wa.gov.au
Tue Dec 7 04:54:21 CET 2004

I'm not really sure exactly what you are getting at. Much of R's functionality is built using the R language itself. If you are looking to interface with other languages you might want to start with the "Writing R Extensions" manual which has a section on "The R API: entry points for C code."

If you are using the windows version this manual ia available from the help menu (assuming you installed the documentation.)

Tom Mulholland

R 2.0 4-Oct-2004
Windows XP

> -----Original Message-----
> From: xudongyuan [mailto:dongyuan.xu at huiway.com]
> Sent: Tuesday, 7 December 2004 11:40 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] how R parses expression?
> Importance: High
> Hi.All and R developers:
>       Since I am a beginner on R,I have some questions when I 
> studied the source code.I wonder if anyone have time to help me?
>       My question is how the R expressions change to the c 
> code. That is when I input an expression to the GUI or from a 
> file, how R converts the expression to the parse tree in C 
> code(maybe it is a C function, then what is it?), and then 
> does the sequent processes.
> 		thanks 
> 							dongyuan xu
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