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About: About this document `eval.c' & `eval.h'

Having created a Sic parser, and populated it with some Builtin handlers, a user of this library must tokenize and evaluate its input stream. These files define a structure for storing tokenized strings (Tokens), and functions for converting char * strings both to and from this structure type:

#ifndef SIC_EVAL_H
#define SIC_EVAL_H 1

#include <sic/common.h>
#include <sic/sic.h>


typedef struct {
  int  argc;            /* number of elements in ARGV */
  char **argv;          /* array of pointers to elements */
  size_t lim;           /* number of bytes allocated */
} Tokens;

extern int eval       (Sic *sic, Tokens *tokens);
extern int untokenize (Sic *sic, char **pcommand, Tokens *tokens);
extern int tokenize   (Sic *sic, Tokens **ptokens, char **pcommand);


#endif /* !SIC_EVAL_H */

These files also define the eval function, which examines a Tokens structure in the context of the given Sic parser, dispatching the argv array to a relevant Builtin handler, also written by the library user.

This document was generated by Gary V. Vaughan on February, 8 2006 using texi2html