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CHANGES WHICH AFFECT BE WRITERS
-=============================-
INTRODUCTION
This file describes changes that affect BE writers. It contains IMPORTANT
INFORMATION for BE writers who wish to migrate a BE written to operate with
release 1.2 to operate with release 1.3. It is likely that not following
these instructions will result in a compilable but malfunctioning compiler.
AST INHERITANCE CHANGES
The AST has been reorganized so that AST_Union and AST_Exception now
inherit from AST_Structure. This means that constructors of BE classes
which inherit from AST_Union or AST_Exception now need to explicitly call
an initializer for AST_Structure in their init section.
We repeat below the information given in the file WRITING_A_BE, in the
section entitled "WRITING A BE".
AST_EXCEPTION
The signature for constructors of classes inheriting from AST_Exception
should now be:
BE_Exception::BE_Exception(UTL_ScopedName *n,
UTL_StrList *p)
: AST_Decl(AST_Decl::NT_except, n, p),
AST_Structure(AST_Decl::NT_except, n, p),
UTL_Scope(AST_Decl::NT_except)
AST_UNION
The signature for constructors of classes inheriting from AST_Union should
now be:
BE_Union::BE_Union(AST_ConcreteType *dt,
UTL_ScopedName *n,
UTL_StrList *p)
: AST_Union(dt, n, p),
AST_Structure(AST_Decl::NT_union, n, p),
AST_Decl(AST_Decl::NT_union, n, p),
UTL_Scope(AST_Decl::NT_union)
IDL_BOOL TYPE
To increase portability and reduce dependency of the sources on POSIX
compliance in targets of ports, IDL now provides its own boolean type which
is named idl_bool. It provides two truth values, I_TRUE and I_FALSE.
UTL_SCOPEDNAME TYPE
The UTL_ScopedName type is now a list of Identifier nodes; in previous
releases it used to be a list of String nodes. If your BE constructs scoped
names this change will prevent recompilation until you modify your
constructor calls to invoke constructors for Identifier instead of for
String. The signature of the constructor is:
Identifier::Identifier(char *, long x=1, long y=0, long z=I_FALSE)
The additional arguments which can be defaulted to the values indicated are
included for future use.
COPYRIGHT
Copyright 1992, 1993, 1994 Sun Microsystems, Inc. Printed in the United
States of America. All Rights Reserved.
This product is protected by copyright and distributed under the following
license restricting its use.
The Interface Definition Language Compiler Front End (CFE) is made
available for your use provided that you include this license and copyright
notice on all media and documentation and the software program in which
this product is incorporated in whole or part. You may copy and extend
functionality (but may not remove functionality) of the Interface
Definition Language CFE without charge, but you are not authorized to
license or distribute it to anyone else except as part of a product or
program developed by you or with the express written consent of Sun
Microsystems, Inc. ("Sun").
The names of Sun Microsystems, Inc. and any of its subsidiaries or
affiliates may not be used in advertising or publicity pertaining to
distribution of Interface Definition Language CFE as permitted herein.
This license is effective until terminated by Sun for failure to comply
with this license. Upon termination, you shall destroy or return all code
and documentation for the Interface Definition Language CFE.
INTERFACE DEFINITION LANGUAGE CFE IS PROVIDED AS IS WITH NO WARRANTIES OF
ANY KIND INCLUDING THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS
FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, OR ARISING FROM A COURSE OF
DEALING, USAGE OR TRADE PRACTICE.
INTERFACE DEFINITION LANGUAGE CFE IS PROVIDED WITH NO SUPPORT AND WITHOUT
ANY OBLIGATION ON THE PART OF Sun OR ANY OF ITS SUBSIDIARIES OR AFFILIATES
TO ASSIST IN ITS USE, CORRECTION, MODIFICATION OR ENHANCEMENT.
SUN OR ANY OF ITS SUBSIDIARIES OR AFFILIATES SHALL HAVE NO LIABILITY WITH
RESPECT TO THE INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY
INTERFACE DEFINITION LANGUAGE CFE OR ANY PART THEREOF.
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Use, duplication, or disclosure by the government is subject to
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Technical Data and Computer Software clause at DFARS 252.227-7013 and FAR
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