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interpre.c
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/* Modified for VM/370 CMS and GCC by Robert O'Hara, July 2010. */
/*
* $Id: interpre.c,v 1.22 2009/06/02 09:41:27 bnv Exp $
* $Log: interpre.c,v $
* Revision 1.22 2009/06/02 09:41:27 bnv
* MVS/CMS corrections
*
* Revision 1.21 2009/02/02 09:25:52 bnv
* Modifications for CMS/MVS
*
* Revision 1.20 2008/07/15 07:40:25 bnv
* #include changed from <> to ""
*
* Revision 1.19 2008/07/14 13:08:42 bnv
* MVS,CMS support
*
* Revision 1.18 2006/01/26 10:25:11 bnv
* Added: Indirect exposure to variables
*
* Revision 1.17 2004/08/16 15:28:54 bnv
* Changed: name of mnemonic operands from xxx_mn to O_XXX
*
* Revision 1.16 2004/04/30 15:27:19 bnv
* Type changes
*
* Revision 1.15 2004/03/27 08:34:21 bnv
* Corrected: SIGNAL VALUE was cleaning the stack before the call
*
* Revision 1.14 2003/10/30 13:16:28 bnv
* Variable name change
*
* Revision 1.13 2002/08/22 12:31:28 bnv
* Removed CR's
*
* Revision 1.12 2002/07/03 13:15:08 bnv
* Changed: Version define
*
* Revision 1.11 2002/06/11 12:37:38 bnv
* Added: CDECL
*
* Revision 1.10 2001/09/28 10:00:39 bnv
* Added: Quotes arround the arguments of a system-function call
*
* Revision 1.9 2001/06/25 18:50:56 bnv
* Added: Memory check in debug version at the end of Interpretation
*
* Revision 1.8 1999/11/26 13:13:47 bnv
* Added: Windows CE support
* Changed: To use the new macros.
*
* Revision 1.7 1999/06/10 14:08:35 bnv
* When a called procedure with local variables returne a variable
* the variable contents was freed first before copied to the RESULT.
*
* Revision 1.6 1999/05/14 12:31:22 bnv
* Minor changes
*
* Revision 1.5 1999/03/15 15:21:36 bnv
* Corrected to handle the error_trace
*
* Revision 1.4 1999/03/15 09:01:57 bnv
* Corrected: error_trace
*
* Revision 1.3 1999/03/10 16:53:32 bnv
* Added MSC support
*
* Revision 1.2 1999/03/01 10:54:37 bnv
* Corrected: To clean correctly the RxStck after an interpret_mn
*
* Revision 1.1 1998/07/02 17:34:50 bnv
* Initial revision
*
*/
#define __INTERPRET_C__
#ifndef WCE
# include <stdio.h>
# include <signal.h>
#endif
#include <cmssys.h>
#include "lerror.h"
#include "lstring.h"
#include "options.h"
#include "rexx.h"
#include "stack.h"
#include "trace.h"
#include "bintree.h"
#include "compile.h"
#include "interpre.h"
#include "context.h"
#ifdef WCE
# define MAX_EVENT_COUNT 50
#endif
/*void ProcessInterrupt();*/
/* ---------------- Local variables ------------------- */
static int word_start, word_end;
#define STACKTOP (context->interpre_RxStck)[(context->interpre_RxStckTop)]
#define STACKP(i) (context->interpre_RxStck)[(context->interpre_RxStckTop)-(i)]
#ifdef __DEBUG__
# define DEBUGDISPLAY0(a) if ((context->rexx__debug__)) printf("\t%u\t%s\n",inst_ip,(a))
# define DEBUGDISPLAY0nl(a) if ((context->rexx__debug__)) printf("\t%u\t%s\t",inst_ip,(a))
# define DEBUGDISPLAY(a) if ((context->rexx__debug__)) {printf("\t%u\t%s\t\"",inst_ip,(a)); \
Lprint(STDOUT,(context->interpre_RxStck)[(context->interpre_RxStckTop)]); printf("\"\n"); }
# define DEBUGDISPLAYi(a,b) if ((context->rexx__debug__)) {printf("\t%u\t%s\t\"",inst_ip,(a)); \
Lprint(STDOUT,(b)); printf("\"\n"); }
# define DEBUGDISPLAY2(a) if ((context->rexx__debug__)) {printf("\t%u\t%s\t\"",inst_ip,(a));\
Lprint(STDOUT,STACKP(1)); printf("\",\""); \
Lprint(STDOUT,STACKTOP);printf("\"\n"); }
#else
# define DEBUGDISPLAY0(a)
# define DEBUGDISPLAY0nl(a)
# define DEBUGDISPLAY(a)
# define DEBUGDISPLAYi(a, b)
# define DEBUGDISPLAY2(a)
#endif
#define CHKERROR if ((context->interpre_RxStckTop)==STCK_SIZE-1) (context->lstring_Lerror)(ERR_STORAGE_EXHAUSTED,0)
#define INCSTACK { (context->interpre_RxStckTop)++; CHKERROR; }
#define POP_C_POP_B_PEEK_A { POP(C); POP(B); PEEK(A); }
#define PEEK(x) x = &(STACKTOP)
#define PEEKR(x, r) x = &((context->interpre_RxStck)[(context->interpre_RxStckTop)-(r)])
#define POP(x) x = &((context->interpre_RxStck)[(context->interpre_RxStckTop)--])
#define PUSH(x) {x = &((context->interpre_RxStck)[++(context->interpre_RxStckTop)]); CHKERROR; }
#ifndef ALIGN
# define PLEAF(x) { x = (PBinLeaf)(*(dword*)(context->interpreRxcip)); \
(context->interpreRxcip) += sizeof(dword); }
# define INCWORD(x) (x) += sizeof(word)
# define INCDWORD(x) (x) += sizeof(dword)
# define CWORD word
#else
# define PLEAF(x) x = (PBinLeaf)(*(context->interpreRxcip)++)
# define INCWORD(x) (x)++
# define INCDWORD(x) (x)++
# define CWORD dword
#endif
extern const ErrorMsg errortext[]; /* CONST - from lstring/errortxt.c */
#ifdef __DEBUG__
/* -------------- DebugStackList ------------- */
static void
DebugStackList(void)
{
int i;
Context *context = (Context*)CMSGetPG();
if ((context->interpre_RxStckTop)<0)
printf("Stack is empty\n");
else
for (i=(context->interpre_RxStckTop); i>=0; i--) {
printf("#%d: \"",i);
Lprint(STDOUT,(context->interpre_RxStck)[i]);
printf("\"\n");
}
} /* DebugStackList */
#endif
/* ---------------- RxProcResize ---------------- */
void __CDECL
RxProcResize(void) {
Context *context = (Context *) CMSGetPG();
size_t oldsize = (context->rexx_proc_size);
(context->rexx_proc_size) += PROC_INC;
(context->rexx_proc) = (RxProc *) REALLOC((context->rexx_proc),
(context->rexx_proc_size) *
sizeof(RxProc));
MEMSET((context->rexx_proc) + oldsize, 0, PROC_INC * sizeof(RxProc));
} /* RxProcResize */
/* ------------- I_trigger_space -------------- */
static void
I_trigger_space(void) {
Context *context = (Context *) CMSGetPG();
/* normalise to 0 .. len-1 */
word_start--;
/* skip leading spaces */
LSKIPBLANKS(*(context->interpre_ToParse),word_start);
if (word_start >= (context->interpre_DataEnd))
word_start = (context->interpre_DataEnd) - 1;
/* find end of word */
word_end = word_start;
LSKIPWORD(*(context->interpre_ToParse),word_end);
if (word_end >= (context->interpre_DataEnd))
word_end = (context->interpre_DataEnd) - 1;
(context->interpre_DataStart) = word_end + 1; /* Point past this word for the next word */
/* skip trailing spaces */
/* again in rexx strings 1..len */
(context->interpre_DataStart)++;
word_start++;
word_end++;
} /* I_trigger_space */
/* ------------- I_trigger_litteral -------------- */
static void
I_trigger_litteral(const PLstr lit) {
int PatternPos;
Context *context = (Context *) CMSGetPG();
PatternPos = (int) Lpos(lit, (context->interpre_ToParse),
(context->interpre_DataStart));
if (PatternPos > 0) {
(context->interpre_BreakStart) = PatternPos;
(context->interpre_BreakEnd) = PatternPos + LLEN(*lit);
} else { /* the rest of the source is selected */
(context->interpre_DataStart) = (context->interpre_BreakEnd);
(context->interpre_BreakStart) = (context->interpre_SourceEnd);
(context->interpre_BreakEnd) = (context->interpre_SourceEnd);
}
} /* I_trigger_litteral */
/* ----------------- I_LoadOption ---------------- */
static void
I_LoadOption(const PLstr value, const int opt) {
#ifndef WCE
char *ch;
#endif
Context *context = (Context *) CMSGetPG();
switch (opt) {
case environment_opt:
Lstrcpy(value, (context->rexx_proc)[(context->rexx_rx_proc)].env);
break;
case digits_opt:
Licpy(value, (context->rexx_proc)[(context->rexx_rx_proc)].digits);
break;
case fuzz_opt:
Licpy(value, (context->rexx_proc)[(context->rexx_rx_proc)].fuzz);
break;
case form_opt:
Lscpy(value, ((context->rexx_proc)[(context->rexx_rx_proc)].form)
? "SCIENTIFIC" : "ENGINEERING");
break;
case author_opt:
Lscpy(value, AUTHOR);
break;
case version_opt: ; // Why does GCC demand this semi-colon?
/* We know that rexx.h:VERSIONSTR ends with "Mmm dd yyyy", and we
need it to be "dd Mmm yyyy". You can't do that in a #define,
so we do it here instead :-(
*/
int vslen = strlen(VERSIONSTR);
char * versionstr = malloc(vslen+1);
strcpy(versionstr, VERSIONSTR);
strncpy(versionstr + vslen-8, VERSIONSTR + vslen-11, 3); // "Mmm"
strncpy(versionstr + vslen-11, VERSIONSTR + vslen-7, 3); // "dd "
Lscpy(value, versionstr);
free(versionstr);
break;
case os_opt:
Lscpy(value, OS);
break;
case calltype_opt:
switch ((context->rexx_proc)[(context->rexx_rx_proc)].calltype) {
case CT_PROCEDURE:
Lscpy(value, "PROCEDURE");
break;
case CT_FUNCTION:
Lscpy(value, "FUNCTION");
break;
default:
Lscpy(value, "COMMAND");
}
break;
case filename_opt:
Lstrcpy(value, &((context->compileCompileClause)[0].fptr)->name);
break;
case prgname_opt:
Lscpy(value, (context->rexx_prgname));
break;
case shell_opt:
#ifndef WCE
ch = getenv(SHELL);
if (ch)
Lscpy(value, ch);
else
#endif
LZEROSTR(*value);
break;
default:
(context->lstring_Lerror)(ERR_INTERPRETER_FAILURE, 0);
}
} /* I_LoadOption */
/* ----------------- I_StoreOption --------------- */
static void
I_StoreOption(const PLstr value, const int opt) {
long l;
Context *context = (Context *) CMSGetPG();
switch (opt) {
case environment_opt:
if (LLEN(*value) > 250)
(context->lstring_Lerror)(ERR_ENVIRON_TOO_LONG, 1, value);
if ((context->rexx_proc)[(context->rexx_rx_proc)].env ==
(context->rexx_proc)[(context->rexx_rx_proc) - 1].env) LPMALLOC(
(context->rexx_proc)[(context->rexx_rx_proc)].env);
Lstrcpy((context->rexx_proc)[(context->rexx_rx_proc)].env, value);
break;
case trace_opt:
TraceSet(value);
if ((context->rexx_proc)[(context->rexx_rx_proc)].trace &
(normal_trace | off_trace | error_trace | failure_trace))
(context->interpre__trace) = FALSE;
else
(context->interpre__trace) = TRUE;
break;
case digits_opt:
if (LLEN(*value) == 0)
(context->rexx_proc)[(context->rexx_rx_proc)].digits =
LMAXNUMERICDIGITS;
else {
l = Lrdint(value);
if (l <= 0)
(context->lstring_Lerror)(ERR_INVALID_INTEGER, 5, value);
(context->rexx_proc)[(context->rexx_rx_proc)].digits = (int) l;
}
(context->lstring_lNumericDigits) = MIN(
(context->rexx_proc)[(context->rexx_rx_proc)].digits,
LMAXNUMERICDIGITS);
if ((context->rexx_proc)[(context->rexx_rx_proc)].digits <=
(context->rexx_proc)[(context->rexx_rx_proc)].fuzz)
(context->lstring_Lerror)(ERR_INVALID_RESULT, 1);
break;
case fuzz_opt:
if (LLEN(*value) == 0)
(context->rexx_proc)[(context->rexx_rx_proc)].fuzz = 0;
else {
l = Lrdint(value);
if (l <= 0)
(context->lstring_Lerror)(ERR_INVALID_INTEGER, 6, value);
(context->rexx_proc)[(context->rexx_rx_proc)].fuzz = (int) l;
}
if ((context->rexx_proc)[(context->rexx_rx_proc)].digits <=
(context->rexx_proc)[(context->rexx_rx_proc)].fuzz)
(context->lstring_Lerror)(ERR_INVALID_RESULT, 1);
break;
case form_value_opt:
Lupper(value);
if (lcmp(value, "ENGINEERING") == 0)
(context->rexx_proc)[(context->rexx_rx_proc)].form = 1;
else if (lcmp(value, "SCIENTIFIC") == 0)
(context->rexx_proc)[(context->rexx_rx_proc)].form = 0;
else
(context->lstring_Lerror)(ERR_INVALID_RESULT, 3, value);
break;
case form_opt:
(context->rexx_proc)[(context->rexx_rx_proc)].form = (int) Lrdint(
value);
break;
case set_signal_opt:
case set_signal_name_opt:
switch (LSTR(*value)[0]) {
case 'E':
(context->rexx_proc)[(context->rexx_rx_proc)].condition |=
SC_ERROR;
if (opt == set_signal_name_opt)
(context->rexx_proc)[(context->rexx_rx_proc)]
.lbl_error = STACKP(
1);
else
(context->rexx_proc)[(context->rexx_rx_proc)]
.lbl_error = &((context->rexxerrorStr)->key);
break;
case 'F':
(context->rexx_proc)[(context->rexx_rx_proc)].condition |=
SC_FAILURE;
if (opt == set_signal_name_opt)
(context->rexx_proc)[(context->rexx_rx_proc)]
.lbl_failure = STACKP(
1);
else
(context->rexx_proc)[(context->rexx_rx_proc)]
.lbl_failure = &((context->rexxfailureStr)->key);
break;
case 'H':
(context->rexx_proc)[(context->rexx_rx_proc)].condition |=
SC_HALT;
if (opt == set_signal_name_opt)
(context->rexx_proc)[(context->rexx_rx_proc)].lbl_halt =
STACKP(
1);
else
(context->rexx_proc)[(context->rexx_rx_proc)].lbl_halt =
&((context->rexxhaltStr)->key);
break;
case 'N':
if (LSTR(*value)[2] == 'V') {
(context->rexx_proc)[(context->rexx_rx_proc)].condition
|= SC_NOVALUE;
if (opt == set_signal_name_opt)
(context->rexx_proc)[(context->rexx_rx_proc)]
.lbl_novalue = STACKP(
1);
else
(context->rexx_proc)[(context->rexx_rx_proc)]
.lbl_novalue =
&((context->rexxnoValueStr)->key);
} else {
(context->rexx_proc)[(context->rexx_rx_proc)].condition
|= SC_NOTREADY;
if (opt == set_signal_name_opt)
(context->rexx_proc)[(context->rexx_rx_proc)]
.lbl_notready = STACKP(
1);
else
(context->rexx_proc)[(context->rexx_rx_proc)]
.lbl_notready =
&((context->rexxnotReadyStr)->key);
}
break;
case 'S':
(context->rexx_proc)[(context->rexx_rx_proc)].condition |=
SC_SYNTAX;
if (opt == set_signal_name_opt)
(context->rexx_proc)[(context->rexx_rx_proc)]
.lbl_syntax = STACKP(
1);
else
(context->rexx_proc)[(context->rexx_rx_proc)]
.lbl_syntax = &((context->rexxsyntaxStr)->key);
break;
default:
(context->lstring_Lerror)(ERR_INTERPRETER_FAILURE, 0);
}
break;
case unset_signal_opt:
switch (LSTR(*value)[0]) {
case 'E':
(context->rexx_proc)[(context->rexx_rx_proc)].condition &=
~SC_ERROR;
break;
case 'F':
(context->rexx_proc)[(context->rexx_rx_proc)].condition &=
~SC_FAILURE;
break;
case 'H':
(context->rexx_proc)[(context->rexx_rx_proc)].condition &=
~SC_HALT;
break;
case 'N':
if (LSTR(*value)[2] == 'V')
(context->rexx_proc)[(context->rexx_rx_proc)].condition
&= ~SC_NOVALUE;
else
(context->rexx_proc)[(context->rexx_rx_proc)].condition
&= ~SC_NOTREADY;
break;
case 'S':
(context->rexx_proc)[(context->rexx_rx_proc)].condition &=
~SC_SYNTAX;
break;
default:
(context->lstring_Lerror)(ERR_INTERPRETER_FAILURE, 0);
}
break;
case options_opt:
ParseOptions(value);
break;
default:
(context->lstring_Lerror)(ERR_INTERPRETER_FAILURE, 0);
}
} /* I_StoreOption */
/* ---------------- I_MakeIntArgs ---------------- */
/* prepare arguments for an internal function call */
/* returns stack position after call */
#ifdef INLINE
inline
#endif
static int
I_MakeIntArgs(const int na, const int realarg, const CTYPE existarg) {
int i, st;
word bp; /* bit position */
Context *context = (Context *) CMSGetPG();
(context->rexxrxArg).n = na;
bp = (1 << (na - 1));
/* must doit reverse */
MEMSET((context->rexxrxArg).a, 0, sizeof((context->rexxrxArg).a));
(context->rexxrxArg).r = (context->interpre_RxStck)[
(context->interpre_RxStckTop) - realarg];
st = (context->interpre_RxStckTop); /* stack position of arguments */
for (i = na - 1; i >= 0; i--) {
if (existarg & bp) {
if ((context->rexxrxArg).r == (context->interpre_RxStck)[st]) {
Lstrcpy(&((context->interpre__tmpstr)[st]),
(context->interpre_RxStck)[st]);
(context->rexxrxArg).a[i] = &(context->interpre__tmpstr)[st];
} else
(context->rexxrxArg).a[i] = (context->interpre_RxStck)[st];
st--;
}
bp >>= 1;
}
return st;
} /* I_MakeIntArgs */
/* ---------------- I_MakeArgs ---------------- */
/* prepare arguments for a call to a func */
#ifdef INLINE
inline
#endif
static void
I_MakeArgs(const int calltype, const int na, const CTYPE existarg) {
int i, st;
CTYPE bp; /* bit position */
RxProc *pr;
Args *arg;
Context *context = (Context *) CMSGetPG();
(context->rexx_rx_proc)++; /* increase program items */
if ((context->rexx_rx_proc) == (context->rexx_proc_size)) RxProcResize();
pr = (context->rexx_proc) + (context->rexx_rx_proc);
/* initialise pr structure */
/* use the old values */
MEMCPY(pr, (context->rexx_proc) + (context->rexx_rx_proc) - 1, sizeof(*pr));
pr->calltype = calltype;
pr->ip = (size_t) ((byte huge *) (context->interpreRxcip) -
(byte huge *) (context->interpreRxcodestart));
pr->stacktop = (context->interpre_RxStckTop);
/* setup arguments */
arg = &(pr->arg);
arg->n = na;
bp = (1 << (na - 1));
/* must doit reverse */
MEMSET(arg->a, 0, sizeof(arg->a));
st = (context->interpre_RxStckTop); /* stack position of arguments */
for (i = na - 1; i >= 0; i--) {
if (existarg & bp) {
arg->a[i] = (context->interpre_RxStck)[st];
st--;
} else
arg->a[i] = NULL;
bp >>= 1;
}
arg->r = (context->interpre_RxStck)[st];
if (calltype == CT_FUNCTION)
pr->stack = st;
else
pr->stack = st - 1;
} /* I_MakeArgs */
/* -------------- I_CallFunction ---------------- */
static int
I_CallFunction(void) {
PBinLeaf leaf, litleaf;
RxFunc *func;
int ct, nargs, realarg, i;
char *ret_string;
char *cmd_string;
char **argv;
int *lenv;
CTYPE existarg, line;
Lstr cmd;
PLstr res = NULL;
int st;
char physical[21];
char logical[21];
char load_package_cmd[25];
FILEP f;
#ifdef __DEBUG__
size_t inst_ip;
#endif
Context *context = (Context *) CMSGetPG();
/* --- read the arguments here --- */
PLEAF(leaf); /* function number */
nargs = *((context->interpreRxcip)++); /* number of args */
realarg = *((context->interpreRxcip)++); /* real arguments */
existarg = *(CWORD *) (context->interpreRxcip); /* existing arguments */
INCWORD((context->interpreRxcip));
line = *(CWORD *) (context->interpreRxcip); /* SIGL line */
INCWORD((context->interpreRxcip));
ct = *((context->interpreRxcip)++); /* call type */
func = (RxFunc *) (leaf->value);
#ifdef __DEBUG__
if ((context->rexx__debug__)) {
int i;
for (i=0; i<LLEN(leaf->key); i++)
putchar(LSTR(leaf->key)[i]);
printf(" NoArgs=%d, Exist=%lX Type=%s\n",
nargs, existarg,(func->type==FT_BUILTIN)?"builtin":"other");
}
#endif
if (func->type == FT_BUILTIN) {
nargs = I_MakeIntArgs(nargs, realarg, existarg);
(func->builtin->func)(func->builtin->opt);
if (ct == CT_PROCEDURE) {
RxVarSet((context->interpre_VarScope), (context->rexxresultStr),
(context->rexxrxArg).r);
(context->interpre_RxStckTop) = nargs - 1; /* clear stack */
} else
(context->interpre_RxStckTop) = nargs;
return TRUE;
} else {
/* If a function is not linked up by now treat it as a system call */
if (func->type != FT_SYSTEM && func->label == UNKNOWN_LABEL) {
func->type = FT_SYSTEM;
func->systype = SYST_UNKNOWN;
}
if (func->type == FT_SYSTEM) {
/* Make the calltype 5 Arguments and prepare command string */
L2STR(&(leaf->key));
LASCIIZ(leaf->key);
argv = malloc(realarg * sizeof(char *));
lenv = malloc(realarg * sizeof(int));
st = (context->interpre_RxStckTop) - realarg;
res = (context->interpre_RxStck)[st++];
i = 0;
while (st <= (context->interpre_RxStckTop)) {
L2STR((context->interpre_RxStck)[st]);
LASCIIZ(*((context->interpre_RxStck)[st]));
argv[i] = LSTR(*((context->interpre_RxStck)[st]));
lenv[i] = LLEN(*((context->interpre_RxStck)[st]));
st++;
i++;
}
sprintf(physical, "%s", LSTR(leaf->key));
i = HOSTFNC(physical,
realarg,
argv, lenv,
ct == CT_PROCEDURE,
&ret_string);
/* Cleanup and handle result string */
free(argv);
free(lenv);
if (ret_string) {
if (i <= 0) { /* Error or zero data returned */
Lscpy(res, ret_string);
} else { /* i is the length of data returned */
Lmcpy(res, ret_string, i);
}
free(ret_string);
}
/* Error calling function */
if (i == -3) {
(context->lstring_Lerror)(ERR_ROUTINE_NOT_FOUND, 0);
} else if (i == -2) {
(context->lstring_Lerror)(ERR_STORAGE_EXHAUSTED, 0);
} else if (i < 0) {
(context->lstring_Lerror)(ERR_INCORRECT_CALL, 0);
}
if (!ret_string) {
if (ct == CT_FUNCTION)
(context->lstring_Lerror)(ERR_NO_DATA_RETURNED, 0);
}
(context->interpre_RxStckTop) -= realarg;
if (ct == CT_PROCEDURE) {
RxVarSet((context->interpre_VarScope), (context->rexxresultStr),
res);
(context->interpre_RxStckTop)--;
}
return TRUE;
} else {
(context->interpreRxcip)++;
RxSetSpecialVar(SIGLVAR, line);
I_MakeArgs(ct, nargs, existarg);
(context->interpreRxcip) = (CIPTYPE *) (
(byte huge *) (context->interpreRxcodestart) + func->label);
(context->interpreRxcip)++; /* skip the OP_NEWCLAUSE */
if ((context->interpre__trace)) TraceClause();
/* Handle Procedure Context */
if (*(context->interpreRxcip) == OP_PROC) {
int exposed;
/* give a unique program id */
/* we might have a problem after 2*32 routine calls!! */
(context->rexx_procidcnt)++;
(context->rexx_proc)[(context->rexx_rx_proc)].id =
(context->rexx_procidcnt);
(context->interpreRx_id) = (context->rexx_procidcnt);
#ifdef __DEBUG__
if ((context->rexx__debug__))
inst_ip = (size_t)((byte huge *)(context->interpreRxcip) - (byte huge *)(context->interpreRxcodestart));
#endif
DEBUGDISPLAY0nl("PROC ");
(context->interpreRxcip)++;
(context->rexx_proc)[(context->rexx_rx_proc)].scope =
RxScopeMalloc();
(context->interpre_VarScope) =
(context->rexx_proc)[(context->rexx_rx_proc)].scope;
/* handle exposed variables */
exposed = *((context->interpreRxcip)++);
#ifdef __DEBUG__
if ((context->rexx__debug__) && exposed>0)
printf("EXPOSE");
#endif
for (; exposed > 0; exposed--) {
/* Get pointer to variable */
PLEAF(litleaf);
/* test if indirect exposure (var) */
if (litleaf == NULL) {
int found;
PBinLeaf leaf;
PLEAF(litleaf);
RxVarExpose((context->interpre_VarScope), litleaf);
#ifdef __DEBUG__
if ((context->rexx__debug__)) {
putchar(' ');
putchar('(');
Lprint(STDOUT,&(litleaf->key));
putchar(')');
putchar('=');
}
#endif
leaf = RxVarFind(
(context->rexx_proc)[(context->rexx_rx_proc) -
1].scope,
litleaf,
&found);
#ifdef __DEBUG__
if ((context->rexx__debug__))
Lprint(STDOUT,LEAFVAL(leaf));
#endif
if (found)
RxVarExposeInd((context->interpre_VarScope),
LEAFVAL(leaf));
} else {
#ifdef __DEBUG__
if ((context->rexx__debug__)) {
putchar(' ');
Lprint(STDOUT,&(litleaf->key));
}
#endif
RxVarExpose((context->interpre_VarScope), litleaf);
}
}
#ifdef __DEBUG__
if ((context->rexx__debug__))
putchar('\n');
#endif
}
}
return FALSE;
}
} /* I_CallFunction */
/* ---------------- I_ReturnProc -------------- */
/* restore arguments after a procedure return */
static void
I_ReturnProc(void) {
Context *context = (Context *) CMSGetPG();
/* fix ip and stack */
(context->interpreRxcip) = (CIPTYPE *) (
(byte huge *) (context->interpreRxcodestart) +
(context->rexx_proc)[(context->rexx_rx_proc)].ip);
(context->interpre_RxStckTop) =
(context->rexx_proc)[(context->rexx_rx_proc)].stack;
if ((context->rexx_rx_proc) > 0) {
/* free everything that it is new */
if ((context->interpre_VarScope) !=
(context->rexx_proc)[(context->rexx_rx_proc) - 1].scope) {
RxScopeFree((context->interpre_VarScope));
FREE((context->interpre_VarScope));
}
if ((context->rexx_proc)[(context->rexx_rx_proc)].env !=
(context->rexx_proc)[(context->rexx_rx_proc) - 1].env) LPFREE(
(context->rexx_proc)[(context->rexx_rx_proc)].env);
}
/* load previous data and exit */
(context->rexx_rx_proc)--;
(context->interpreRx_id) = (context->rexx_proc)[(context->rexx_rx_proc)].id;
(context->interpre_VarScope) =
(context->rexx_proc)[(context->rexx_rx_proc)].scope;
(context->lstring_lNumericDigits) =
(context->rexx_proc)[(context->rexx_rx_proc)].digits;
if ((context->rexx_proc)[(context->rexx_rx_proc)].trace &
(normal_trace | off_trace | error_trace | failure_trace))
(context->interpre__trace) = FALSE;
else
(context->interpre__trace) = TRUE;
} /* I_ReturnProc */
/* ------------ RxInitInterStr -------------- */
void __CDECL
RxInitInterStr() {
RxProc *pr;
Context *context = (Context *) CMSGetPG();
(context->rexx_rx_proc)++; /* increase program items */
if ((context->rexx_rx_proc) == (context->rexx_proc_size)) RxProcResize();
pr = (context->rexx_proc) + (context->rexx_rx_proc);
/* program id is the same */
MEMCPY(pr, (context->rexx_proc) + (context->rexx_rx_proc) - 1, sizeof(*pr));
pr->calltype = CT_INTERPRET;
pr->ip = (size_t) ((byte huge *) (context->interpreRxcip) -
(byte huge *) (context->interpreRxcodestart));
pr->codelen = LLEN(*(context->rexx_code));
pr->clauselen = (context->compileCompileCurClause);
pr->stack = (context->interpre_RxStckTop) - 1; /* before temporary str */
pr->stacktop = (context->interpre_RxStckTop);
/* setup arguments */
(pr->arg).n = 0;
MEMSET(pr->arg.a, 0, sizeof(pr->arg.a));
(pr->arg).r = NULL;
/* --- save state --- */
MEMCPY((context->interpre_old_error), (context->rexx_error_trap),
sizeof((context->rexx_error_trap)));
SIGNAL(SIGINT, SIG_IGN);
/* compile the program */
RxInitCompile((context->rexxrxFileList), STACKTOP);
RxCompile();
/* --- restore state --- */
MEMCPY((context->rexx_error_trap), (context->interpre_old_error),
sizeof((context->rexx_error_trap)));
SIGNAL(SIGINT, RxHaltTrap);
/* might have changed position */
(context->interpreRxcodestart) = (CIPTYPE *) LSTR(*(context->rexx_code));
(context->interpreRxcip) = (CIPTYPE *) (
(byte huge *) (context->interpreRxcodestart) + pr->codelen);
/* check for an error in compilation */
if ((context->rexxrxReturnCode)) {
/* --- load previous data and exit ---- */
(context->interpreRxcip) = (CIPTYPE *) (
(byte huge *) (context->interpreRxcodestart) + pr->ip);
(context->rexx_rx_proc)--;
(context->interpreRx_id) =
(context->rexx_proc)[(context->rexx_rx_proc)].id;
(context->interpre_VarScope) =
(context->rexx_proc)[(context->rexx_rx_proc)].scope;
RxSetSpecialVar(RCVAR, (context->rexxrxReturnCode));
RxSignalCondition(SC_SYNTAX, "");
}
} /* RxInitInterStr */
/* ------------ RxDoneInterStr -------------- */
static void
RxDoneInterStr(void) {
Context *context = (Context *) CMSGetPG();
/* fix ip and stack */
if ((context->rexx_proc)[(context->rexx_rx_proc)].calltype ==
CT_INTERACTIVE) {
if ((context->rexx_proc)[(context->rexx_rx_proc)].trace &
(normal_trace | off_trace | error_trace | failure_trace))
(context->interpre__trace) = FALSE;
else
(context->interpre__trace) = TRUE;
}
(context->interpreRxcip) = (CIPTYPE *) (
(byte huge *) (context->interpreRxcodestart) +
(context->rexx_proc)[(context->rexx_rx_proc)].ip);
(context->interpre_RxStckTop) =
(context->rexx_proc)[(context->rexx_rx_proc)].stack;
/* fixup code length, cut the interpretation code */
LLEN(*(context->rexx_code)) =
(context->rexx_proc)[(context->rexx_rx_proc)].codelen;
(context->compileCompileCurClause) =
(context->rexx_proc)[(context->rexx_rx_proc)].clauselen;
if ((context->rexx_proc)[(context->rexx_rx_proc)].env !=
(context->rexx_proc)[(context->rexx_rx_proc) - 1].env) {
Lstrcpy((context->rexx_proc)[(context->rexx_rx_proc) - 1].env,
(context->rexx_proc)[(context->rexx_rx_proc)].env);
LPFREE((context->rexx_proc)[(context->rexx_rx_proc)].env);
}
/* --- load previous data and exit ---- */
(context->rexx_rx_proc)--;
(context->interpreRx_id) = (context->rexx_proc)[(context->rexx_rx_proc)].id;
(context->rexx_proc)[(context->rexx_rx_proc)].trace = (context->rexx_proc)[
(context->rexx_rx_proc) + 1].trace;
(context->rexx_proc)[(context->rexx_rx_proc)].interactive_trace =
(context->rexx_proc)[
(context->rexx_rx_proc) + 1].interactive_trace;
(context->interpre_VarScope) =
(context->rexx_proc)[(context->rexx_rx_proc)].scope;
} /* RxDoneInterStr */
/* ---------------- RxInitInterpret --------------- */
void __CDECL
RxInitInterpret(void) {
int i;
Context *context = (Context *) CMSGetPG();
#ifdef __PROFILE__
MEMSET((context->interpre_instr_cnt),sizeof((context->interpre_instr_cnt)),0);
#endif
MEMSET((context->interpre_RxStck), 0, (STCK_SIZE) * sizeof(PLstr));
(context->interpre_RxStckTop) = -1;
MEMSET((context->interpre__tmpstr), 0, (STCK_SIZE) * sizeof(Lstr));
for (i = 0; i < STCK_SIZE; i++) {
Lfx(&((context->interpre__tmpstr)[i]), 0);
if (!LSTR((context->interpre__tmpstr)[i]))
(context->lstring_Lerror)(ERR_STORAGE_EXHAUSTED, 0);
}
} /* RxInitInterpret */
/* ---------------- RxDoneInterpret --------------- */
void __CDECL
RxDoneInterpret(void) {
int i;
Context *context = (Context *) CMSGetPG();
#ifdef __PROFILE__
FILE *fout;
Context *context = (Context*)CMSGetPG();
fout = fopen("instr.cnt","w");
fprintf(fout,"Instr\tCount\n");
for (i=0; i<OP_POW; i++) /* pow is the last command */
fprintf(fout,"%d\t%d\n",i,(context->interpre_instr_cnt[i]));
fclose(fout);
#endif
#ifdef __DEBUG__
mem_chk();
if ((context->interpre_RxStckTop)>=0) {
fprintf(STDERR,"interpret: %d items left in stack.\n", (context->interpre_RxStckTop)+1);
DebugStackList();
}
#endif
/* clear stack */
for (i = 0; i < STCK_SIZE; i++) {
#ifdef __DEBUG__
if ((context->rexx__debug__) && LLEN((context->interpre__tmpstr)[i])) {
fprintf(STDERR,"Freeing... %d: \"",i);
Lprint(STDERR,&((context->interpre__tmpstr)[i]));
fprintf(STDERR,"\"\n");
}
#endif
LFREESTR((context->interpre__tmpstr)[i]);
}