77 lines
2.0 KiB
C
77 lines
2.0 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 "cmd_qlf.h"
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#include "advancewindow.h"
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#include "gtm_caseconv.h"
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GBLREF command_qualifier cmd_qlf;
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LITREF mident zero_ident;
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error_def(ERR_LABELEXPECTED);
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int lref(oprtype *label, oprtype *offset, boolean_t no_lab_ok, mint commarg_code, boolean_t commarg_ok, boolean_t *got_some)
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{
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char c;
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triple *ref;
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DCL_THREADGBL_ACCESS;
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SETUP_THREADGBL_ACCESS;
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switch (TREF(window_token))
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{
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case TK_INTLIT:
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int_label();
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/* caution: fall through */
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case TK_IDENT:
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*got_some = TRUE;
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if (!(cmd_qlf.qlf & CQ_LOWER_LABELS))
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lower_to_upper((uchar_ptr_t)(TREF(window_ident)).addr, (uchar_ptr_t)(TREF(window_ident)).addr,
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(TREF(window_ident)).len);
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*label = put_str((TREF(window_ident)).addr, (TREF(window_ident)).len);
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advancewindow();
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break;
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case TK_ATSIGN:
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*got_some = TRUE;
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if (!indirection(label))
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return FALSE;
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if (commarg_ok
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&& (TK_COLON != (c = TREF(window_token))) && (TK_CIRCUMFLEX != c) && (TK_PLUS != c)) /* NOTE assignment */
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{
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ref = newtriple(OC_COMMARG);
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ref->operand[0] = *label;
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ref->operand[1] = put_ilit(commarg_code);
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*label = put_tref(ref);
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return TRUE;
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}
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break;
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case TK_COLON:
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case TK_CIRCUMFLEX:
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return TRUE;
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case TK_PLUS:
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*label = put_str(zero_ident.addr, zero_ident.len);
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if (no_lab_ok)
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break;
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/* caution: fall through */
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default:
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stx_error(ERR_LABELEXPECTED);
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return FALSE;
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}
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if (TK_PLUS != TREF(window_token))
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return TRUE;
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*got_some = TRUE;
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advancewindow();
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return expr(offset, MUMPS_INT);
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}
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