116 lines
4.4 KiB
C
116 lines
4.4 KiB
C
/****************************************************************
|
|
* *
|
|
* Copyright 2001, 2011 Fidelity Information Services, Inc *
|
|
* *
|
|
* This source code contains the intellectual property *
|
|
* of its copyright holder(s), and is made available *
|
|
* under a license. If you do not know the terms of *
|
|
* the license, please stop and do not read further. *
|
|
* *
|
|
****************************************************************/
|
|
#include "mdef.h"
|
|
|
|
#include "compiler.h"
|
|
#include "opcode.h"
|
|
#include "indir_enum.h"
|
|
#include "toktyp.h"
|
|
#include "mdq.h"
|
|
#include "advancewindow.h"
|
|
#include "fullbool.h"
|
|
#include "show_source_line.h"
|
|
|
|
error_def(ERR_VAREXPECTED);
|
|
|
|
int f_incr(oprtype *a, opctype op)
|
|
{
|
|
boolean_t ok;
|
|
char source_line_buff[MAX_SRCLINE + SIZEOF(ARROW)];
|
|
oprtype *increment;
|
|
triple incrchain, *oldchain, *r, *savptr, targchain, tmpexpr, *triptr;
|
|
DCL_THREADGBL_ACCESS;
|
|
|
|
SETUP_THREADGBL_ACCESS;
|
|
r = maketriple(op);
|
|
/* may need to evaluate the increment (2nd arg) early and use result later: prepare to juggle triple chains */
|
|
dqinit(&targchain, exorder); /* a place for the operation and the target */
|
|
dqinit(&incrchain, exorder); /* a place for the increment */
|
|
dqinit(&tmpexpr, exorder); /* a place to juggle the shifted chain in case it's active */
|
|
triptr = TREF(expr_start);
|
|
savptr = TREF(expr_start_orig); /* but make sure expr_start_orig == expr_start since this is a new chain */
|
|
TREF(expr_start_orig) = TREF(expr_start) = &tmpexpr;
|
|
oldchain = setcurtchain(&targchain); /* save the result of the first argument 'cause it evaluates 2nd */
|
|
switch (TREF(window_token))
|
|
{
|
|
case TK_IDENT:
|
|
/* $INCREMENT() performs an implicit $GET() on a first argument lvn so we use OC_PUTINDX because
|
|
* we know only at runtime whether to signal an UNDEF error (depending on whether we have
|
|
* VIEW "NOUNDEF" or "UNDEF" state; op_putindx creates the local variable unconditionally, even if
|
|
* we have "UNDEF" state, in which case any error in op_fnincr causes an op_kill of that local variable
|
|
*/
|
|
ok = (lvn(&(r->operand[0]), OC_PUTINDX, 0));
|
|
break;
|
|
case TK_CIRCUMFLEX:
|
|
ok = gvn();
|
|
r->opcode = OC_GVINCR;
|
|
r->operand[0] = put_ilit(0); /* dummy fill since emit_code does not like empty operand[0] */
|
|
break;
|
|
case TK_ATSIGN:
|
|
ok = indirection(&r->operand[0]);
|
|
r->opcode = OC_INDINCR;
|
|
break;
|
|
default:
|
|
ok = FALSE;
|
|
break;
|
|
}
|
|
if (!ok)
|
|
{
|
|
setcurtchain(oldchain);
|
|
return FALSE;
|
|
}
|
|
assert(TREF(expr_start) == tmpexpr.exorder.bl); /* maks sure nothing else did something fancy */
|
|
TREF(expr_start) = triptr; /* restore original shift chain */
|
|
TREF(expr_start_orig) = savptr;
|
|
increment = &r->operand[1];
|
|
setcurtchain(&incrchain); /* now to the increment expr, which must evaluate before the glvn in $INCR(glvn,expr) */
|
|
if (TK_COMMA != TREF(window_token))
|
|
*increment = put_ilit(1); /* default optional increment to 1 */
|
|
else
|
|
{
|
|
advancewindow();
|
|
if (EXPR_FAIL == expr(increment, MUMPS_NUM))
|
|
{
|
|
setcurtchain(oldchain);
|
|
return FALSE;
|
|
}
|
|
}
|
|
triptr = incrchain.exorder.bl; /* prepare to park the target after the increment */
|
|
dqadd(triptr, &targchain, exorder); /* this is a violation of info hiding */
|
|
coerce(increment, OCT_MVAL);
|
|
ins_triple(r);
|
|
if (&tmpexpr != tmpexpr.exorder.bl)
|
|
{ /* one or more OC_GVNAME may have shifted so add to the end of the shift chain */
|
|
assert(TREF(shift_side_effects));
|
|
dqadd(TREF(expr_start), &tmpexpr, exorder); /* this is a violation of info hiding */
|
|
TREF(expr_start) = tmpexpr.exorder.bl;
|
|
triptr = newtriple(OC_GVRECTARG); /* restore the result of the last gvn to preserve $referece (the naked) */
|
|
triptr->operand[0] = put_tref(TREF(expr_start));
|
|
}
|
|
if (!TREF(shift_side_effects) || (GTM_BOOL != TREF(gtm_fullbool)) || (OC_INDINCR != r->opcode))
|
|
{ /* put it on the end of the main chain as there's no reason to play more with the ordering */
|
|
setcurtchain(oldchain);
|
|
triptr = (TREF(curtchain))->exorder.bl;
|
|
dqadd(triptr, &incrchain, exorder); /* this is a violation of info hiding */
|
|
} else /* need full side effects or indirect 1st argument so put everything on the shift chain */
|
|
{ /* add the chain after "expr_start" which may be much before "curtchain" */
|
|
newtriple(OC_GVSAVTARG);
|
|
setcurtchain(oldchain);
|
|
assert(NULL != TREF(expr_start));
|
|
dqadd(TREF(expr_start), &incrchain, exorder); /* this is a violation of info hiding */
|
|
TREF(expr_start) = incrchain.exorder.bl;
|
|
triptr = newtriple(OC_GVRECTARG);
|
|
triptr->operand[0] = put_tref(TREF(expr_start));
|
|
}
|
|
*a = put_tref(r);
|
|
return TRUE;
|
|
}
|