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. IN NO EVENT WILL SUN OR ANY OF ITS SUBSIDIARIES OR AFFILIATES BE LIABLE FOR ANY LOST REVENUE OR PROFITS OR OTHER SPECIAL, INDIRECT AND CONSEQUENTIAL DAMAGES, EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Use, duplication, or disclosure by the government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 and FAR 52.227-19. Sun, Sun Microsystems and the Sun logo are trademarks or registered trademarks of Sun Microsystems, Inc. SunSoft, Inc. 2550 Garcia Avenue Mountain View, California 94043 NOTE: SunOS, SunSoft, Sun, Solaris, Sun Microsystems or the Sun logo are trademarks or registered trademarks of Sun Microsystems, Inc.