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PDP-10 Archives
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SRI_NIC_PERM_FS_1_19910112
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kccdist/kcc/cclex.h
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/* CCLEX.H - Declarations for KCC input parsing (CCLEX and CCINP)
**
** Copyright 1985, 1986 by Ken Harrenstien, SRI International.
** Split from cc.h and other places, 15 Dec 85
*/
#ifndef EXT /* Actual definition happens in CCDATA */
#define EXT extern
#endif
EXT int ch; /* Current character */
EXT int inifarg; /* TRUE if parsing an #if/#elif argument */
EXT int level; /* #include file level (CCERR, CCINP, CCLEX) */
EXT char errlin[ERRLSIZE]; /* error context - circular buffer */
EXT char *erptr; /* pointer into it */
EXT int erpleft; /* # chars left until wraparound */
EXT int ercsiz; /* # chars to show in error msg */
EXT char _cpool[CPOOLSIZE]; /* character pool */
EXT char *cpool; /* and its pointer */
EXT int cpleft; /* Countdown of # free chars left */
/* Constant value if current token == CONST.
* Set by CCLEX as part of token parsing.
* Copied by CCSTMT into parse tree node values, and glanced at
* by CCINP macro processing. Nothing else uses this.
*/
EXT struct {
TYPE *ctype; /* constant type */
union {
int cint; /* integer value */
float cflt; /* float value */
double cdbl; /* double value */
/* long double cldbl; */
struct { /* string constant */
char *csp; /* char pointer */
int csint; /* string length */
} cstr;
} cvar;
} constant; /* place to hold current constant */
/* The value of ctype is set to only one of the following, with
* the associated definitions used. The cvar/cstr unions are never to be
* used directly.
*/
/* ctype == deftype (INT) integer constant */
#define cvalue cvar.cint /* integer value */
/* ctype == strtype (CHAR *) string constant */
#define csptr cvar.cstr.csp /* Pointer for string const */
#define cslen cvar.cstr.csint /* String length (includes null) */
/* ctype == dbltype (DOUBLE) double (float) constant */
/* or flttype */
/* or lngdbltype */
#define Cfloat cvar.cflt /* floating-point value */
#define Cdouble cvar.cdbl
#define Clngdbl cvar.cdbl /* Not used yet for anything different. */