111 lines
2.2 KiB
C
111 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 "iotimer.h"
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#include "indir_enum.h"
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#include "advancewindow.h"
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#include "cmd.h"
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error_def(ERR_RPARENMISSING);
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int m_lock(void)
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{
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boolean_t indirect;
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opctype ox;
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oprtype indopr;
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triple *ref, *restart;
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DCL_THREADGBL_ACCESS;
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SETUP_THREADGBL_ACCESS;
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restart = newtriple(OC_RESTARTPC);
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newtriple(OC_LKINIT);
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indirect = FALSE;
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switch (TREF(window_token))
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{
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case TK_MINUS:
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advancewindow();
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ox = OC_LCKDECR;
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break;
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case TK_PLUS:
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advancewindow();
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ox = OC_LCKINCR;
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break;
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case TK_EOL:
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case TK_SPACE:
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ox = OC_UNLOCK;
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restart->opcode = OC_NOOP;
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newtriple(OC_UNLOCK);
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return TRUE;
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break;
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case TK_ATSIGN:
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if (!indirection(&indopr))
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return FALSE;
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ref = maketriple(OC_COMMARG);
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ref->operand[0] = indopr;
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if (TK_COLON != TREF(window_token))
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{
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ref->operand[1] = put_ilit((mint) indir_lock);
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ins_triple(ref);
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return TRUE;
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}
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ref->operand[1] = put_ilit((mint) indir_nref);
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indirect = TRUE;
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/*** CAUTION: FALL-THROUGH ***/
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default:
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newtriple(OC_UNLOCK);
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ox = OC_LOCK;
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}
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if (indirect)
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ins_triple(ref);
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else
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{
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switch (TREF(window_token))
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{
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case TK_LPAREN:
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do
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{
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advancewindow();
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if (nref() == EXPR_FAIL)
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return FALSE;
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} while (TK_COMMA == TREF(window_token));
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if (TK_RPAREN != TREF(window_token))
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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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advancewindow();
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break;
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default:
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if (nref() == EXPR_FAIL)
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return FALSE;
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break;
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}
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}
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ref = maketriple(ox);
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if (TK_COLON != TREF(window_token))
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{ ref->operand[0] = put_ilit(NO_M_TIMEOUT);
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ins_triple(ref);
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}
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else
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{
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advancewindow();
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if (EXPR_FAIL == expr(&(ref->operand[0]), MUMPS_INT))
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return FALSE;
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ins_triple(ref);
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newtriple(OC_TIMTRU);
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}
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return TRUE;
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}
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