fis-gtm/sr_port/f_extract.c

54 lines
1.5 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 "toktyp.h"
#include "advancewindow.h"
/* $EXTRACT, $ZEXTRACT, and $ZSUBSTR use this compiler routine as all have similar function and identical invocation signatures */
int f_extract(oprtype *a, opctype op)
{
triple *first, *last, *r;
DCL_THREADGBL_ACCESS;
SETUP_THREADGBL_ACCESS;
r = maketriple(op);
if (EXPR_FAIL == expr(&(r->operand[0]), MUMPS_STR))
return FALSE;
first = newtriple(OC_PARAMETER);
last = newtriple(OC_PARAMETER);
r->operand[1] = put_tref(first);
first->operand[1] = put_tref(last);
if (TK_COMMA != TREF(window_token))
{
first->operand[0] = put_ilit(1);
last->operand[0] = put_ilit((OC_FNZSUBSTR == op) ? MAXPOSINT4 : 1);
} else
{
advancewindow();
if (EXPR_FAIL == expr(&(first->operand[0]), MUMPS_INT))
return FALSE;
if (TK_COMMA != TREF(window_token))
last->operand[0] = (OC_FNZSUBSTR == op) ? put_ilit(MAXPOSINT4) : first->operand[0];
else
{
advancewindow();
if (EXPR_FAIL == expr(&(last->operand[0]), MUMPS_INT))
return FALSE;
}
}
ins_triple(r);
*a = put_tref(r);
return TRUE;
}