Critical Mass Modula-3: m3tk/src/ast/M3AST

m3tk/src/ast/M3AST_PG.m3

MODULE M3AST_PG;

************************************************************************* 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 M3AST, M3AST_AS;
IMPORT M3AST_AS_F, M3AST_SM_F;

PROCEDURE IsA_EXTERNAL_DECL(n: M3AST.NODE;
    VAR(*out*) external_decl: EXTERNAL_DECL): BOOLEAN RAISES {}=
  BEGIN
    TYPECASE n OF
    | M3AST_AS.Interface(t) => external_decl := t.vEXTERNAL_DECL; RETURN TRUE;
    | M3AST_AS.DECL(t) => external_decl := t.vEXTERNAL_DECL; RETURN TRUE;
    ELSE RETURN FALSE;
    END;
  END IsA_EXTERNAL_DECL;

PROCEDURE IsA_EXTERNAL_ID(n: M3AST.NODE;
    VAR(*out*) external_id: EXTERNAL_ID): BOOLEAN RAISES {} =
  BEGIN
    TYPECASE n OF
    | M3AST_AS.Interface_id(t) => external_id := t.vEXTERNAL_ID; RETURN TRUE
    | M3AST_AS.Var_id(t) => external_id := t.vEXTERNAL_ID; RETURN TRUE
    | M3AST_AS.Proc_id(t) => external_id := t.vEXTERNAL_ID; RETURN TRUE
    | M3AST_AS.Exc_id(t) => external_id := t.vEXTERNAL_ID; RETURN TRUE
    | M3AST_AS.Type_id(t) => external_id := t.vEXTERNAL_ID; RETURN TRUE
    | M3AST_AS.Const_id(t) => external_id := t.vEXTERNAL_ID; RETURN TRUE
    ELSE RETURN FALSE
    END;
  END IsA_EXTERNAL_ID;

************************************************ PROCEDURE NewEXTERNAL_DECL(): EXTERNAL_DECL RAISES {} = BEGIN RETURN NEW(EXTERNAL_DECL).init(); END NewEXTERNAL_DECL;

PROCEDURE NewInline(): Inline RAISES {} = BEGIN RETURN NEW(Inline).init(); END NewInline;

PROCEDURE NewExternal(): External RAISES {} = BEGIN RETURN NEW(External).init(); END NewExternal;

PROCEDURE NewEXTERNAL_ID(): EXTERNAL_ID RAISES {} = BEGIN RETURN NEW(EXTERNAL_ID); END NewEXTERNAL_ID; *******************************

VAR
  ux_g := NEW(External_NULL_UNSET OBJECT END);

PROCEDURE UNSET_External(): External_NULL_UNSET RAISES {}=
  BEGIN
    RETURN ux_g;
  END UNSET_External;

BEGIN
END M3AST_PG.

interface M3AST is in: