93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2011 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 "subscript.h"
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#include "advancewindow.h"
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error_def(ERR_LPARENMISSING);
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error_def(ERR_MAXNRSUBSCRIPTS);
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error_def(ERR_RPARENMISSING);
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int indirection(oprtype *a)
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{
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char c;
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oprtype *sb1, *sb2, subs[MAX_INDSUBSCRIPTS], x;
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triple *next, *ref;
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DCL_THREADGBL_ACCESS;
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SETUP_THREADGBL_ACCESS;
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assert(TK_ATSIGN == TREF(window_token));
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if (!(TREF(expr_depth))++)
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TREF(expr_start) = TREF(expr_start_orig) = NULL;
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advancewindow();
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if (!expratom(a))
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{
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TREF(expr_depth) = 0;
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return FALSE;
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}
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coerce(a, OCT_MVAL);
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ex_tail(a);
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if (!(--(TREF(expr_depth))))
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TREF(shift_side_effects) = FALSE;
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TREF(saw_side_effect) = TREF(shift_side_effects); /* TRUE or FALSE, at this point they're the same */
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if (TK_ATSIGN == TREF(window_token))
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{
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advancewindow();
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if (TK_LPAREN != TREF(window_token))
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{
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stx_error(ERR_LPARENMISSING);
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return FALSE;
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}
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ref = maketriple(OC_INDNAME);
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sb1 = sb2 = subs;
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for (;;)
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{
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if (ARRAYTOP(subs) <= sb1)
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{
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stx_error(ERR_MAXNRSUBSCRIPTS);
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return FALSE;
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}
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advancewindow();
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if (EXPR_FAIL == expr(sb1++, MUMPS_EXPR))
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return FALSE;
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if (TK_RPAREN == (c = TREF(window_token))) /* NOTE assignment */
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{
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advancewindow();
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break;
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}
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if (TK_COMMA != c)
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{
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stx_error(ERR_RPARENMISSING);
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return FALSE;
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}
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}
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/* store argument count...n args plus the name plus the dst*/
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ref->operand[0] = put_ilit((mint)(sb1 - sb2) + 2);
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ins_triple(ref);
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next = newtriple(OC_PARAMETER);
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next->operand[0] = *a;
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ref->operand[1] = put_tref(next);
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*a = put_tref(ref);
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while (sb2 < sb1)
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{
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ref = newtriple(OC_PARAMETER);
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next->operand[1] = put_tref(ref);
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ref->operand[0] = *sb2++;
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next = ref;
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}
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}
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return TRUE;
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}
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