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xlispsrc.arc
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XLGLOB.C
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1988-02-11
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/* xlglobals - xlisp global variables */
/* Copyright (c) 1985, by David Michael Betz
All Rights Reserved
Permission is granted for unrestricted non-commercial use */
#include "xlisp.h"
/* symbols */
LVAL true=NIL,obarray=NIL;
LVAL s_unbound=NIL,s_dot=NIL;
LVAL s_quote=NIL,s_function=NIL;
LVAL s_bquote=NIL,s_comma=NIL,s_comat=NIL;
LVAL s_evalhook=NIL,s_applyhook=NIL,s_tracelist;
LVAL s_lambda=NIL,s_macro=NIL;
LVAL s_stdin=NIL,s_stdout=NIL,s_stderr=NIL,s_debugio=NIL,s_traceout=NIL;
LVAL s_rtable=NIL;
LVAL s_tracenable=NIL,s_tlimit=NIL,s_breakenable=NIL;
LVAL s_setf=NIL,s_car=NIL,s_cdr=NIL,s_nth=NIL,s_aref=NIL,s_get=NIL;
LVAL s_svalue=NIL,s_sfunction=NIL,s_splist=NIL;
LVAL s_eql=NIL,s_gcflag=NIL,s_gchook=NIL;
LVAL s_ifmt=NIL,s_ffmt=NIL;
LVAL s_1plus=NIL,s_2plus=NIL,s_3plus=NIL;
LVAL s_1star=NIL,s_2star=NIL,s_3star=NIL;
LVAL s_minus=NIL,s_printcase=NIL;
/* keywords */
LVAL k_test=NIL,k_tnot=NIL;
LVAL k_wspace=NIL,k_const=NIL,k_nmacro=NIL,k_tmacro=NIL;
LVAL k_sescape=NIL,k_mescape=NIL;
LVAL k_direction=NIL,k_input=NIL,k_output=NIL;
LVAL k_start=NIL,k_end=NIL,k_1start=NIL,k_1end=NIL;
LVAL k_2start=NIL,k_2end=NIL,k_count=NIL,k_key=NIL;
LVAL k_verbose=NIL,k_print=NIL;
LVAL k_upcase=NIL,k_downcase=NIL;
/* lambda list keywords */
LVAL lk_optional=NIL,lk_rest=NIL,lk_key=NIL,lk_aux=NIL;
LVAL lk_allow_other_keys=NIL;
/* type names */
LVAL a_subr=NIL,a_fsubr=NIL;
LVAL a_cons=NIL,a_symbol=NIL,a_fixnum=NIL,a_flonum=NIL;
LVAL a_string=NIL,a_object=NIL,a_stream=NIL,a_vector=NIL;
LVAL a_closure=NIL,a_char=NIL,a_ustream=NIL;
/* evaluation variables */
LVAL **xlstack = NULL,**xlstkbase = NULL,**xlstktop = NULL;
LVAL xlenv=NIL,xlfenv=NIL,xldenv=NIL;
/* argument stack */
LVAL *xlargstkbase = NULL; /* argument stack base */
LVAL *xlargstktop = NULL; /* argument stack top */
LVAL *xlfp = NULL; /* argument frame pointer */
LVAL *xlsp = NULL; /* argument stack pointer */
LVAL *xlargv = NULL; /* current argument vector */
int xlargc = 0; /* current argument count */
/* exception handling variables */
CONTEXT *xlcontext = NULL; /* current exception handler */
CONTEXT *xltarget = NULL; /* target context (for xljump) */
LVAL xlvalue=NIL; /* exception value (for xljump) */
int xlmask=0; /* exception type (for xljump) */
/* debugging variables */
int xldebug = 0; /* debug level */
int xlsample = 0; /* control character sample rate */
int xltrcindent = 0; /* trace indent level */
/* gensym variables */
char gsprefix[STRMAX+1] = { 'G',0 }; /* gensym prefix string */
int gsnumber = 1; /* gensym number */
/* i/o variables */
int xlfsize = 0; /* flat size of current print call */
FILE *tfp = NULL; /* transcript file pointer */
/* general purpose string buffer */
char buf[STRMAX+1] = { 0 };