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ANIMDAT
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SCANNER.H
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C/C++ Source or Header
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1992-11-30
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2KB
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51 lines
/*--------------------------------------------------------------*/
/* ANIMDAT 1.1 */
/* copyright 1992 - TODD SANKEY */
/* */
/* The author hereby grants permission for the use and sharing */
/* of both source code end executable versions of this software */
/* at no charge. This software is not for sale and no other */
/* shall charge for it without the expressed consent of the */
/* author. */
/* */
/* The source code can be freely modified, but it must retain */
/* the original copyright notice, and the author must be */
/* notified of these changes if the altered code is to be */
/* distributed. */
/*--------------------------------------------------------------*/
/*------------------------------------------------------*/
/* scanner.h Interface for scanning and tokeninzing */
/* an expression. */
/*------------------------------------------------------*/
#ifndef scanner_h
#define scanner_h
/* token types */
typedef enum {
NO_TOKEN, IDENTIFIER, NUMBER, STRING,
CARET, STAR, LPAREN, RPAREN,
MINUS, PLUS, EQUAL, LT,
GT, LE, GE, NE,
SLASH, COMMA, OR, AND,
SIN, COS, TAN, EXP,
LOG, RND, ATAN, ASIN,
ACOS, POUND, QUOTE, ERROR,
NUMSCENE, PERCENT, END_OF_FILE
} TOKEN_CODE;
/* globals for accessing tokens */
extern TOKEN_CODE token;
extern char word_string[];
extern double literal_value;
extern char *token_names[];
/* routines for processing tokens */
void init_scanner(char *buffer_ptr); /* Set the scanner to a point in the
source buffer and start scanning
from that point. */
void get_token(void); /* updates the token global variable */
#endif