m3tk/src/pl/M3LExports.m3

MODULE M3LExports;
************************************************************************* 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;
IMPORT AST, M3AST_AS, M3AST_SM, M3AST_PG, M3Context, M3CUnit;

IMPORT M3AST_AS_F, M3AST_PG_F, M3AST_SM_F;

IMPORT M3ASTWalk;

REVEAL
  Closure = Closure_public BRANDED OBJECT
  OVERRIDES
    callback := CheckUnit
  END;

TYPE
  WalkClosure = M3ASTWalk.Closure OBJECT
    unit: M3AST_AS.Compilation_Unit;
    ccl: Closure;
  OVERRIDES
    callback := CheckNode;
  END;

PROCEDURE Check(c: M3Context.T; cl: Closure) RAISES {}=
  <*FATAL ANY*>
  BEGIN
    M3Context.Apply(c, cl, findStandard := FALSE);
  END Check;

PROCEDURE CheckUnit(cl: Closure; ut: M3CUnit.Type; <*UNUSED*> name: Text.T;
    cu: M3AST_AS.Compilation_Unit) RAISES {}=
  <*FATAL ANY*>
  BEGIN
    IF ut = M3CUnit.Type.Interface THEN
      M3ASTWalk.VisitNodes(cu, NEW(WalkClosure, unit := cu, ccl := cl));
    END; (* if *)
  END CheckUnit;

PROCEDURE CheckNode(wcl: WalkClosure;
    an: AST.NODE; <*UNUSED*> vm: M3ASTWalk.VisitMode) RAISES {}=
  VAR
    ts: M3AST_SM.TYPE_SPEC_UNSET;
    external_id: M3AST_PG.EXTERNAL_ID;
  BEGIN
    IF M3AST_PG.IsA_EXTERNAL_ID(an, external_id) THEN
      IF external_id.pg_external = NIL THEN
        TYPECASE an OF
        | M3AST_AS.Proc_id(proc_id) =>
            IF proc_id.sm_concrete_proc_id = NIL THEN
              wcl.ccl.report(wcl.unit, an);
            END; (* if *)

        | M3AST_AS.Type_id(type_id) =>
            ts := type_id.sm_type_spec;
            TYPECASE ts OF
            | M3AST_AS.Opaque_type(opaque_type) =>
              IF opaque_type.sm_concrete_type_spec = NIL THEN
                wcl.ccl.report(wcl.unit, an);
              END; (* if *)
            ELSE (* who cares *)
            END; (* typecase *)
        ELSE
        END; (* typecase *)
      END; (* if *)
    END; (* if *)
  END CheckNode;

BEGIN
END M3LExports.