/* 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"). 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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. */ // AST_InterfaceFwd nodes denote forward declarations of IDL interfaces. // AST_InterfaceFwd nodes have a field containing the full declaration // of the interface, which is initialized when that declaration is // encountered. #include "ast_interface_fwd.h" #include "ast_interface.h" #include "ast_module.h" #include "ast_visitor.h" #include "utl_identifier.h" AST_Decl::NodeType const AST_InterfaceFwd::NT = AST_Decl::NT_interface_fwd; AST_InterfaceFwd::AST_InterfaceFwd (AST_Interface *dummy, UTL_ScopedName *n) : COMMON_Base (dummy->is_local (), dummy->is_abstract ()), AST_Decl (AST_Decl::NT_interface_fwd, n), AST_Type (AST_Decl::NT_interface_fwd, n), is_defined_ (false), has_ownership_ (true) { // Create a dummy placeholder for the forward declared interface. This // interface node is not yet defined (n_inherits < 0), so some operations // will fail. this->pd_full_definition = dummy; if (! dummy->is_local ()) { idl_global->non_local_fwd_iface_seen_ = true; } } AST_InterfaceFwd::~AST_InterfaceFwd () { } // Private operations. bool AST_InterfaceFwd::is_local () { return this->full_definition ()->is_local (); } bool AST_InterfaceFwd::is_valuetype () { AST_Decl::NodeType nt = this->full_definition ()->node_type (); return nt == AST_Decl::NT_valuetype || nt == AST_Decl::NT_eventtype; } bool AST_InterfaceFwd::is_abstract_valuetype () { return (this->full_definition ()->is_abstract () && this->is_valuetype ()); } bool AST_InterfaceFwd::full_def_seen () { UTL_Scope *s = this->defined_in (); AST_Interface *i = nullptr; // If a full definition is seen in a previous module opening // or anywhere in the current scope (before or after our // declaration, reture TRUE. if (AST_Decl::NT_module == s->scope_node_type ()) { AST_Module *m = dynamic_cast (s); AST_Decl *d = m->look_in_prev_mods_local (this->local_name (), false); if (nullptr != d) { i = dynamic_cast (d); if (nullptr != i && i->is_defined ()) { return true; } } } for (UTL_ScopeActiveIterator iter (s, UTL_Scope::IK_decls); !iter.is_done (); iter.next ()) { i = dynamic_cast (iter.item ()); if (nullptr != i && this->local_name ()->compare (i->local_name ())) { if (i->is_defined ()) { return true; } } } return false; } // Redefinition of inherited virtual operations. // Dump this AST_InterfaceFwd node to the ostream o. void AST_InterfaceFwd::dump (ACE_OSTREAM_TYPE &o) { if (this->is_abstract ()) { this->dump_i (o, "abstract "); } else if (this->is_local ()) { this->dump_i (o, "local "); } this->dump_i (o, "interface "); this->local_name ()->dump (o); } int AST_InterfaceFwd::ast_accept (ast_visitor *visitor) { return visitor->visit_interface_fwd (this); } // Data accessors. AST_Interface * AST_InterfaceFwd::full_definition () { return this->pd_full_definition; } void AST_InterfaceFwd::set_full_definition (AST_Interface *nfd) { if (pd_full_definition && has_ownership_) { pd_full_definition->destroy (); delete pd_full_definition; } pd_full_definition = nfd; has_ownership_ = false; } bool AST_InterfaceFwd::is_defined () { // Look for the one instance of the fwd decl // that may have a full definition. if (!this->is_defined_) { AST_Module *m = dynamic_cast (this->defined_in ()); if (nullptr != m) { AST_Decl *d = m->look_in_prev_mods_local (this->local_name ()); if (nullptr != d) { // We could be looking at a superfluous forward decl // of an interface already defined. AST_Interface *full = dynamic_cast (d); if (nullptr != full) { set_as_defined (); } AST_InterfaceFwd *fwd = dynamic_cast (d); // Since fwd_redefinition_helper() is called // before fe_add_interface(), we can't check // n_inherits() or is_defined(), but added() // is a sufficient way to tell if our full // definition has already gone through the // add_to_scope process. if (nullptr != fwd && fwd->is_defined ()) { set_as_defined (); } } } } return this->is_defined_; } void AST_InterfaceFwd::set_as_defined () { is_defined_ = true; } void AST_InterfaceFwd::disown_full_definition () { has_ownership_ = false; } void AST_InterfaceFwd::destroy () { if (has_ownership_) { set_full_definition (nullptr); } this->AST_Type::destroy (); } bool AST_InterfaceFwd::is_fwd () { return true; // This is a fwd declared type } // We don't actually want the forward declaration, // but want to return the full definition member, // whether defined yet or not. AST_Decl * AST_InterfaceFwd::adjust_found ( bool ignore_fwd, bool full_def_only) { if (ignore_fwd) { AST_Interface *i = this->full_definition (); return (full_def_only && !i->is_defined () ? nullptr : i); } return this; }