79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/****************************************************************
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* *
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* Copyright 2013 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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error_def(ERR_COMMA);
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#ifdef UNIX
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/* Compile 4 parameter $ZPEEK(baseadr,offset,length<,format>) function where:
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*
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* structid - A string containing a set of mnemonics that identify the structure to fetch from (see op_fnzpeek.c)
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* offset - Offset into the block (error if negative).
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* length - Length to return (error if negative or > MAX_STRLEN).
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* format - Option parm contains single char formatting code (see op_fnzpeek.c)
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*/
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int f_zpeek(oprtype *a, opctype op)
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{
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oprtype x;
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triple *offset, *length, *format, *r;
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mval mv;
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DCL_THREADGBL_ACCESS;
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SETUP_THREADGBL_ACCESS;
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r = maketriple(op);
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if (EXPR_FAIL == expr(&(r->operand[0]), MUMPS_STR)) /* Structure identifier string */
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return FALSE;
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if (TK_COMMA != TREF(window_token))
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{
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stx_error(ERR_COMMA);
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return FALSE;
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}
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advancewindow();
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offset = newtriple(OC_PARAMETER);
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r->operand[1] = put_tref(offset);
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if (EXPR_FAIL == expr(&(offset->operand[0]), MUMPS_INT))
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return FALSE;
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if (TK_COMMA != TREF(window_token))
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{
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stx_error(ERR_COMMA);
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return FALSE;
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}
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advancewindow();
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length = newtriple(OC_PARAMETER);
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offset->operand[1] = put_tref(length);
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if (EXPR_FAIL == expr(&(length->operand[0]), MUMPS_INT))
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return FALSE;
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format = newtriple(OC_PARAMETER);
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length->operand[1] = put_tref(format);
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if (TK_COMMA != TREF(window_token))
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format->operand[0] = put_str("C", 1); /* Default format if none specified */
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else
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{
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advancewindow();
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if (EXPR_FAIL == expr(&(format->operand[0]), MUMPS_STR))
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return FALSE;
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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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#else /* VMS - function not supported here */
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int f_zpeek(oprtype *a, opctype op)
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{
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GTMASSERT;
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}
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#endif
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