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(* M2System.def defines the SYSTEM builtin types.
Copyright (C) 2001-2025 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Modula-2; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. *)
DEFINITION MODULE M2System ;
(*
Title : M2System
Author : Gaius Mulley
System : UNIX (gm2)
Date : Tue Jul 11 08:39:17 2000
Description: Implements the base types of the module SYSTEM
for the GNU Modula-2 compiler. Note that the base types
are mapped onto their equivalents in the gcc backend.
*)
FROM gcctypes IMPORT location_t ;
EXPORT QUALIFIED
System, (* The SYSTEM module symbol. *)
Loc, (* ISO specific System Type. *)
Word, (* System Type *)
Byte, (* System Type *)
Address, (* System Type *)
CSizeT, (* System Type *)
CSSizeT, (* System Type *)
COffT, (* System Type *)
Adr, (* System Function *)
TSize, (* System Function *)
AddAdr, (* ISO specific System Function *)
SubAdr, (* ISO specific System Function *)
DifAdr, (* ISO specific System Function *)
MakeAdr, (* ISO specific System Function *)
Rotate, (* ISO specific System Function *)
Shift, (* ISO specific System Function *)
Cast, (* ISO specific System Function *)
Throw, (* GNU Modula-2 extension *)
TBitSize, (* GNU Modula-2 extension *)
GetSystemTypeMinMax,
IsPseudoSystemFunction, IsPseudoSystemProcedure,
IsSystemType,
IsPseudoSystemFunctionConstExpression,
IntegerN, CardinalN, WordN, RealN, SetN, ComplexN,
IsIntegerN, IsCardinalN, IsWordN,
IsRealN, IsSetN, IsComplexN,
IsGenericSystemType,
IsSameSizePervasiveType, IsSameSize,
InitSystem ;
VAR
System,
Loc,
Word, Byte,
Address,
CSizeT, CSSizeT,
COffT,
Adr,
TSize, TBitSize,
AddAdr, SubAdr,
DifAdr, MakeAdr,
Rotate, Shift,
Cast, Throw : CARDINAL ;
(*
InitSystem - initializes the base types Word and Byte in the module
SYSTEM.
*)
PROCEDURE InitSystem ;
(*
GetSystemTypeMinMax - returns the minimum and maximum values for a given system type.
*)
PROCEDURE GetSystemTypeMinMax (type: CARDINAL; VAR min, max: CARDINAL) ;
(*
IsPseudoSystemFunction - returns true if Sym is a SYSTEM pseudo function.
*)
PROCEDURE IsPseudoSystemFunction (sym: CARDINAL) : BOOLEAN ;
(*
IsPseudoSystemProcedure - returns true if Sym is a SYSTEM pseudo procedure.
*)
PROCEDURE IsPseudoSystemProcedure (sym: CARDINAL) : BOOLEAN ;
(*
IsPseudoSystemFunctionConstExpression - returns TRUE if this procedure
is legal in a constant expression.
*)
PROCEDURE IsPseudoSystemFunctionConstExpression (sym: CARDINAL) : BOOLEAN ;
(*
IsSystemType - returns TRUE if Sym is a SYSTEM (inbuilt) type.
It does not search your SYSTEM implementation module.
*)
PROCEDURE IsSystemType (sym: CARDINAL) : BOOLEAN ;
(*
IntegerN - returns the symbol associated with INTEGER[N].
NulSym is returned if the type does not exist.
*)
PROCEDURE IntegerN (bitlength: CARDINAL) : CARDINAL ;
(*
CardinalN - returns the symbol associated with CARDINAL[N].
NulSym is returned if the type does not exist.
*)
PROCEDURE CardinalN (bitlength: CARDINAL) : CARDINAL ;
(*
WordN - returns the symbol associated with WORD[N].
NulSym is returned if the type does not exist.
*)
PROCEDURE WordN (bitlength: CARDINAL) : CARDINAL ;
(*
SetN - returns the symbol associated with SET[N].
NulSym is returned if the type does not exist.
*)
PROCEDURE SetN (bitlength: CARDINAL) : CARDINAL ;
(*
RealN - returns the symbol associated with REAL[N].
NulSym is returned if the type does not exist.
*)
PROCEDURE RealN (bitlength: CARDINAL) : CARDINAL ;
(*
ComplexN - returns the symbol associated with COMPLEX[N].
NulSym is returned if the type does not exist.
*)
PROCEDURE ComplexN (bitlength: CARDINAL) : CARDINAL ;
(*
IsIntegerN - returns the TRUE if, sym, is one of the SYSTEM
INTEGER types (not the base INTEGER type).
*)
PROCEDURE IsIntegerN (sym: CARDINAL) : BOOLEAN ;
(*
IsCardinalN - returns the TRUE if, sym, is one of the SYSTEM
CARDINAL types (not the base CARDINAL type).
*)
PROCEDURE IsCardinalN (sym: CARDINAL) : BOOLEAN ;
(*
IsWordN - returns the TRUE if, sym, is one of the SYSTEM
WORD[n] types (not the default SYSTEM WORD type).
*)
PROCEDURE IsWordN (sym: CARDINAL) : BOOLEAN ;
(*
IsSetN - returns the TRUE if, sym, is one of the SYSTEM
SET[n] types (not the default SYSTEM BITSET type).
*)
PROCEDURE IsSetN (sym: CARDINAL) : BOOLEAN ;
(*
IsRealN - returns the TRUE if, sym, is one of the SYSTEM
REAL[n] types (not the default base REAL type).
*)
PROCEDURE IsRealN (sym: CARDINAL) : BOOLEAN ;
(*
IsComplexN - returns the TRUE if, sym, is one of the SYSTEM
COMPLEX[n] types (not the default base COMPLEX,
LONGCOMPLEX or SHORTCOMPLEX types).
*)
PROCEDURE IsComplexN (sym: CARDINAL) : BOOLEAN ;
(*
IsGenericSystemType - returns TRUE if, sym, is of type
BYTE, WORD or any other length.
*)
PROCEDURE IsGenericSystemType (sym: CARDINAL) : BOOLEAN ;
(*
IsSameSizePervasiveType - returns TRUE if a or b are CARDINAL, INTEGER, REAL,
LONGREAL, SHORTREAL and the other type is the same
size and of the same type.
*)
PROCEDURE IsSameSizePervasiveType (a, b: CARDINAL) : BOOLEAN ;
(*
IsSameSize - return TRUE if SIZE(a)=SIZE(b)
*)
PROCEDURE IsSameSize (a, b: CARDINAL) : BOOLEAN ;
END M2System.
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