m3tk/src/sem/M3CStdProcs.m3

MODULE M3CStdProcs;
************************************************************************* Copyright (C) Olivetti 1989 All Rights reserved Use and copy of this software and preparation of derivative works based upon this software are permitted to any person, provided this same copyright notice and the following Olivetti warranty disclaimer are included in any copy of the software or any modification thereof or derivative work therefrom made by any person. This software is made available AS IS and Olivetti disclaims all warranties with respect to this software, whether expressed or implied under any law, including all implied warranties of merchantibility and fitness for any purpose. In no event shall Olivetti be liable for any damages whatsoever resulting from loss of use, data or profits or otherwise arising out of or in connection with the use or performance of this software. ************************************************************************* 

IMPORT Text, TextRefTbl;

IMPORT M3AST_AS;

IMPORT M3AST_AS_F, M3AST_SM_F, M3AST_TM_F;

IMPORT M3Context, M3CId, M3Assert;

VAR
  table_g: TextRefTbl.T;

PROCEDURE IsStandardUnit(unitId: M3AST_AS.UNIT_ID): BOOLEAN RAISES {}=
  BEGIN
    RETURN NARROW(unitId.sm_spec, M3AST_AS.UNIT).sm_comp_unit =
        M3Context.Standard();
  END IsStandardUnit;

PROCEDURE IsStandardCall(
    call: M3AST_AS.Call;
    VAR pf: T)
    : BOOLEAN
    RAISES {}=
  BEGIN
    TYPECASE call.as_callexp OF
    | M3AST_AS.Exp_used_id(expUsedId) =>
        VAR
          defId := expUsedId.vUSED_ID.sm_def;
          hashId: REFANY;
        BEGIN
          IF defId # NIL AND ISTYPE(defId, M3AST_AS.Proc_id) AND
              IsStandardUnit(defId.tmp_unit_id) THEN
            IF table_g.get(M3CId.ToText(defId.lx_symrep), hashId) THEN
              pf := NARROW(hashId, REF T)^;
              RETURN TRUE;
            ELSE
              M3Assert.Fail();
              <*ASSERT FALSE*>
            END; (* if *)
          ELSE
            RETURN FALSE;
          END; (* if *)
        END;
    ELSE
      RETURN FALSE;
    END; (* if *)
  END IsStandardCall;

PROCEDURE IsStandard(id: M3AST_AS.Proc_id; VAR pf: T): BOOLEAN RAISES {}=
  VAR
    hashId: REFANY;
  BEGIN
    IF IsStandardUnit(id.tmp_unit_id) THEN
      IF table_g.get(M3CId.ToText(id.lx_symrep), hashId) THEN
        pf := NARROW(hashId, REF T)^;
        RETURN TRUE;
      ELSE
        M3Assert.Fail();
        <*ASSERT FALSE*>
      END; (* if *)
    ELSE
      RETURN FALSE;
    END; (* if *)
  END IsStandard;

PROCEDURE Enter(s: Text.T; pf: T) RAISES {}=
  VAR
    new := NEW(REF T);
  BEGIN
    new^ := pf;
    EVAL table_g.put(s, new);
  END Enter;

PROCEDURE Initialise() RAISES {}=
  BEGIN
    table_g := NEW(TextRefTbl.Default).init(32);
    Enter("NEW", T.New);
    Enter("INC", T.Inc);
    Enter("DEC", T.Dec);
    Enter("DISPOSE", T.Dispose);
    Enter("ABS", T.Abs);
    Enter("FLOAT", T.Float);
    Enter("FLOOR", T.Floor);
    Enter("CEILING", T.Ceiling);
    Enter("ROUND", T.Round);
    Enter("TRUNC", T.Trunc);
    Enter("MAX", T.Max);
    Enter("MIN", T.Min);
    Enter("ORD", T.Ord);
    Enter("VAL", T.Val);
    Enter("NUMBER", T.Number);
    Enter("FIRST", T.First);
    Enter("LAST", T.Last);
    Enter("TYPECODE", T.TypeCode);
    Enter("NARROW", T.Narrow);
    Enter("ISTYPE", T.IsType);
    Enter("BITSIZE", T.BitSize);
    Enter("BYTESIZE", T.ByteSize);
    Enter("ADRSIZE", T.AdrSize);
    Enter("LOOPHOLE", T.Loophole);
    Enter("ADR", T.Adr);
    Enter("SUBARRAY", T.Subarray);
  END Initialise;

BEGIN
  Initialise();
END M3CStdProcs.