m3tk/src/sem/M3CTypeSpec.i3


INTERFACE M3CTypeSpec;
************************************************************************* 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 AST, M3AST_AS, M3AST_SM, ASTWalk;

PROCEDURE SetPass1(an: AST.NODE) RAISES {};
This pass relies on 'sm_def' being set (for TYPED_IDs). It sets up the 'sm_type_spec' attribute for all explicitly typed ids and for 'Named_type's.

PROCEDURE NewSetPass2Closure(unit: M3AST_AS.UNIT): ASTWalk.Closure RAISES {};
Creates a closure for use in the second pass. Pass 2 calls 'M3CExpTypeSpec' to set up the 'sm_exp_type_spec' attribute of expressions and also sets the 'sm_type_spec' of all ids which are implicitly typed by their initializing expressions. Should only be called with 'vm = ASTWalk.VisitMode.Exit'

PROCEDURE OfOverride(
    override: M3AST_AS.Override)
    : M3AST_SM.TYPE_SPEC_UNSET
    RAISES {};
Returns the type spec of 'override' and sets the 'sm_type_spec' field of the corresponding override_id (override.as_id). Assumes 'SetPass1' has already been called and uses 'M3CConcTypeSpec.CurrentReveal'.

END M3CTypeSpec.