57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2010 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include "compiler.h"
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#include "opcode.h"
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#include "toktyp.h"
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#include "advancewindow.h"
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GBLREF char window_token;
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/* Note this function compiler routine is used for all of $EXTRACT,
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$ZEXTRACT, and $ZSUBSTR since the format of the call is identical
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in all instances as the function is similar.
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*/
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int f_extract(oprtype *a, opctype op)
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{
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triple *first, *last, *r;
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r = maketriple(op);
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if (!strexpr(&(r->operand[0])))
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return FALSE;
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first = newtriple(OC_PARAMETER);
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last = newtriple(OC_PARAMETER);
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r->operand[1] = put_tref(first);
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first->operand[1] = put_tref(last);
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if (window_token != TK_COMMA)
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{
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first->operand[0] = put_ilit(1);
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last->operand[0] = put_ilit((OC_FNZSUBSTR == op) ? MAXPOSINT4 : 1);
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} else
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{
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advancewindow();
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if (!intexpr(&(first->operand[0])))
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return FALSE;
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if (window_token != TK_COMMA)
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last->operand[0] = (OC_FNZSUBSTR == op) ? put_ilit(MAXPOSINT4) : first->operand[0];
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else
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{
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advancewindow();
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if (!intexpr(&(last->operand[0])))
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return FALSE;
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}
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}
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ins_triple(r);
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*a = put_tref(r);
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return TRUE;
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}
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