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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. */ #ifndef _UTL_SCOPE_UTL_SCOPE_HH #define _UTL_SCOPE_UTL_SCOPE_HH // This is the base class for name scoping. Each entity which can // be directly contained in a naming scope has an add() function // defined for it. The functions defined on the base scoping class // all return FALSE. Each subclass of UTL_Scope should // define its own add() functions for those types which are legal // in that context. Then, for those types for which no local functions // have been defined the function on the base class will be called to // return FALSE. // // The "AST_" classes may redefine add() functions to implement any // name binding mechanisms needed for their own functionality. It is // the responsibility of those functions then to call the add() // function defined in the parent "AST_" class. #include "fe_utils.h" // This is for AIX w/IBM C++. class Identifier; class AST_PredefinedType; class AST_Module; class AST_Template_Module_Inst; class AST_Template_Module_Ref; class AST_Interface; class AST_InterfaceFwd; class AST_ValueBox; class AST_ValueType; class AST_ValueTypeFwd; class AST_EventType; class AST_EventTypeFwd; class AST_Component; class AST_ComponentFwd; class AST_Home; class AST_Constant; class AST_Exception; class AST_Attribute; class AST_Operation; class AST_Argument; class AST_Param_Holder; class AST_Union; class AST_UnionFwd; class AST_UnionBranch; class AST_Structure; class AST_StructureFwd; class AST_Field; class AST_Enum; class AST_EnumVal; class AST_Sequence; class AST_String; class AST_Typedef; class AST_Array; class AST_Native; class AST_Factory; class AST_Finder; class AST_PortType; class AST_Provides; class AST_Uses; class AST_Publishes; class AST_Emits; class AST_Consumes; class AST_Extended_Port; class AST_Mirror_Port; class AST_Connector; class UTL_StrList; class UTL_NameList; class AST_Annotation_Decl; class AST_Annotation_Member; // Forward declaration of active iterator for UTL_Scope. class UTL_ScopeActiveIterator; class TAO_IDL_FE_Export UTL_Scope : public virtual COMMON_Base { // Friend class UTL_ScopeActiveIterator defines active iterator for // UTL_Scope. Definition follows below. friend class UTL_ScopeActiveIterator; public: // Enum to denote the kind of iteration desired. enum ScopeIterationKind { IK_both // Iterate through both decls and local types. , IK_decls // Iterate only through decls. , IK_localtypes // Iterate only through local types. }; // Operations. // Constructor(s). UTL_Scope (); UTL_Scope (AST_Decl::NodeType nt); // Destructor. virtual ~UTL_Scope (); // Data Accessors. AST_Decl::NodeType scope_node_type () { return pd_scope_node_type; } // AST Dumping. virtual void dump (ACE_OSTREAM_TYPE &o); // Other Operations. // Name Lookup Mechanism AST_Decl *lookup_by_name (UTL_ScopedName *, bool full_def_only = false, bool for_add = true); AST_Decl *lookup_by_name_r (UTL_ScopedName *, bool full_def_only); AST_Decl *lookup_by_name_r (UTL_ScopedName *, bool full_def_only, AST_Decl *&final_parent_decl); // Look up the Identifier * specified only in the local scope. AST_Decl *lookup_by_name_local (Identifier *, bool full_def_only = false); // Look up a predefined type by its ExprType. AST_Decl *lookup_primitive_type (AST_Expression::ExprType); // Look up one of the pseudo-object types. AST_Decl *lookup_pseudo (Identifier *); AST_Decl *lookup_by_name (const char *name); virtual AST_Decl *look_in_prev_mods_local (Identifier *e, bool ignore_fwd = false); // A no-op here, overridden for types like interface // (look_in_inherited), modules (look_in_prev_mods) etc. virtual AST_Decl *special_lookup (UTL_ScopedName *e, bool ful_def_only, AST_Decl *&final_parent_decl); // How many entries are used? virtual unsigned long nmembers (); // If the Identifier string (from the scoped name which has been // already determined to be of length 1) matches a param, // create and return a param holder AST node, otherwise // return 0. static AST_Param_Holder *match_param (UTL_ScopedName *e); // Add to decls. Node represents a local declaration // The new decl e is inserted after ex if ex is not 0. // This one is public because the case of a reopened // module necessitates a call to this from // be_generator::create_module(). void add_to_scope (AST_Decl *e, AST_Decl *ex = 0); // Add to name_referenced identifier list. It's public because // a union needs to add its enum discriminator label names. void add_to_name_referenced (Identifier *id); // Accessors for the has_prefix_ member. bool has_prefix (); void has_prefix (bool val); // Cleanup function. virtual void destroy (); // Visiting. virtual int ast_accept (ast_visitor *visitor); protected: // UTL_Scope protected addition protocol. This protocol is // used from sub-classes of UTL_Scope to insert nodes directly // into the specified node table (either decls or local_types) // Additionally, UTL_Scope also maintains a record of what nodes // defined elsewhere were referenced in this scope. // Replace old_decl with new_decl. void replace_scope (AST_Decl *old_decl, AST_Decl *new_decl); // Replace old_decl with new_decl. void replace_referenced (AST_Decl *old_decl, AST_Decl *new_decl); // Add to referenced nodes set. // If ex is not 0 'e' will be inserted at the position // after ex, which is already in the list. void add_to_referenced (AST_Decl *e, bool recursive, Identifier *id, AST_Decl *ex = 0); // Add to local types. Node represents a local manifest type. void add_to_local_types (AST_Decl *e); // Has this node been referenced here already? virtual bool referenced (AST_Decl *e, Identifier *id = 0); // Look up a scoped name in the inherited list. virtual AST_Decl *look_in_inherited (UTL_ScopedName *, bool treat_as_ref); // Look up a scoped name in the supported interface list. virtual AST_Decl *look_in_supported (UTL_ScopedName *, bool treat_as_ref); // Lookup based on the local name. AST_Decl *lookup_for_add (AST_Decl *d); // Is there a (case-insensitive) clash between a local name // and an IDL keyword? int idl_keyword_clash (Identifier *e); // Checks for modules, or defns of forward declared struct or unions. bool redef_clash (AST_Decl::NodeType new_nt, AST_Decl::NodeType scope_elem_nt); void check_for_predef_seq (AST_Decl *d); // Set the appropriate *_seen_ flag if we are seeing a spec-defined // sequence of a basic type. protected: // Data. // What type is this node? This is a cache of the information // in AST_Decl const AST_Decl::NodeType pd_scope_node_type; // Storage for declarations in this scope. AST_Decl **pd_decls; // Store declarations long pd_decls_allocated; // How many allocated? long pd_decls_used; // How many used? // Storage for local manifest types in this scope. AST_Decl **pd_local_types; // Store types long pd_locals_allocated; // How many allocated? long pd_locals_used; // How many used? // Storage for referenced nodes in this scope. AST_Decl **pd_referenced; // Store references long pd_referenced_allocated; // How many allocated? long pd_referenced_used; // How many used? // Storage for identifiers used in this scope. CORBA 2.3 introduced // stricter rules for clashes during name resolution, and the information // in pd_referenced is not enough to catch them all. Identifier **pd_name_referenced; // Store name references long pd_name_referenced_allocated; // How many allocated? long pd_name_referenced_used; // How many used? // Have we seen a #pragma prefix declaration in this scope? bool has_prefix_; // Used in lookup of various CORBA pseudo objects, which also // determines generation of specific #include headers. enum WHICH_PSEUDO { PSEUDO_TYPECODE, PSEUDO_OBJECT, PSEUDO_VALUEBASE, PSEUDO_ABSTRACTBASE }; WHICH_PSEUDO which_pseudo_; public: /// Scope Management Protocol. /// Common code for most basic adding action. AST_Decl *fe_add_decl (AST_Decl *d); /// Specialized for types that reference another type. AST_Field *fe_add_ref_decl (AST_Field *d); template DECL *fe_add_full_intf_decl (DECL *t); template typename FULL_DECL::FWD_TYPE *fe_add_fwd_intf_decl ( typename FULL_DECL::FWD_TYPE *t); AST_Structure *fe_add_full_struct_type (AST_Structure *t); AST_StructureFwd *fe_add_fwd_struct_type (AST_StructureFwd *t); /// No-op base class version of the specialized adding actions. virtual AST_PredefinedType *fe_add_predefined_type ( AST_PredefinedType *t); virtual AST_Module *fe_add_module (AST_Module *m); virtual AST_Template_Module_Inst *fe_add_template_module_inst ( AST_Template_Module_Inst *m); virtual AST_Template_Module_Ref *fe_add_template_module_ref ( AST_Template_Module_Ref *m); virtual AST_Interface *fe_add_interface (AST_Interface *i); virtual AST_InterfaceFwd *fe_add_interface_fwd (AST_InterfaceFwd *i); virtual AST_ValueType *fe_add_valuetype (AST_ValueType *i); virtual AST_ValueTypeFwd *fe_add_valuetype_fwd (AST_ValueTypeFwd *i); virtual AST_EventType *fe_add_eventtype (AST_EventType *i); virtual AST_EventTypeFwd *fe_add_eventtype_fwd (AST_EventTypeFwd *i); virtual AST_Component *fe_add_component (AST_Component *i); virtual AST_ComponentFwd *fe_add_component_fwd (AST_ComponentFwd *i); virtual AST_Home *fe_add_home (AST_Home *i); virtual AST_Connector *fe_add_connector (AST_Connector *i); virtual AST_Constant *fe_add_constant (AST_Constant *i); virtual AST_Exception *fe_add_exception (AST_Exception *e); virtual AST_Attribute *fe_add_attribute (AST_Attribute *a); virtual AST_Operation *fe_add_operation (AST_Operation *o); virtual AST_Argument *fe_add_argument (AST_Argument *a); virtual AST_Union *fe_add_union (AST_Union *u); virtual AST_UnionFwd *fe_add_union_fwd (AST_UnionFwd *u); virtual AST_UnionBranch *fe_add_union_branch (AST_UnionBranch *b); virtual AST_Structure *fe_add_structure (AST_Structure *s); virtual AST_StructureFwd *fe_add_structure_fwd (AST_StructureFwd *s); virtual AST_Field *fe_add_field (AST_Field *f); virtual AST_Enum *fe_add_enum (AST_Enum *e); virtual AST_EnumVal *fe_add_enum_val (AST_EnumVal *v); virtual AST_Typedef *fe_add_typedef (AST_Typedef *t); virtual UTL_StrList *fe_add_context (UTL_StrList *c); virtual UTL_NameList *fe_add_exceptions (UTL_NameList *e); virtual AST_Sequence *fe_add_sequence (AST_Sequence *s); virtual AST_String *fe_add_string (AST_String *s); virtual AST_Array *fe_add_array (AST_Array *a); virtual AST_Native *fe_add_native (AST_Native *n); virtual AST_Factory *fe_add_factory (AST_Factory *f); virtual AST_Finder *fe_add_finder (AST_Finder *f); virtual AST_ValueBox *fe_add_valuebox (AST_ValueBox *vb); virtual AST_PortType *fe_add_porttype (AST_PortType *pt); virtual AST_Provides *fe_add_provides (AST_Provides *p); virtual AST_Uses *fe_add_uses (AST_Uses *p); virtual AST_Publishes *fe_add_publishes (AST_Publishes *p); virtual AST_Emits *fe_add_emits (AST_Emits *p); virtual AST_Consumes *fe_add_consumes (AST_Consumes *p); virtual AST_Extended_Port *fe_add_extended_port (AST_Extended_Port *ep); virtual AST_Mirror_Port *fe_add_mirror_port (AST_Mirror_Port *mp); virtual AST_Annotation_Decl *fe_add_annotation_decl ( AST_Annotation_Decl *annotation_decl); virtual AST_Annotation_Member *fe_add_annotation_member ( AST_Annotation_Member *annotation_member); protected: /// Quick check on the head of a name to see if it's global. bool is_global_name (Identifier *i); private: /// Checks called from fe_add_decl() specific to interfaces /// (and its subtypes) and operations respectively. bool inherited_op_attr_clash (AST_Decl *t); bool arg_specific_error (AST_Decl *t); /// Encapsulates the vagaries of adding fields vs decls to /// structs/unions vs other types. void smart_local_add (AST_Decl *t); /// Helper function for lookup_by_name(). Iterates doing local /// lookups of subsequent components of a scoped name. AST_Decl * iter_lookup_by_name_local (AST_Decl *d, UTL_ScopedName *e, bool full_def_only = false); }; // Active iterator for a UTL_Scope node class TAO_IDL_FE_Export UTL_ScopeActiveIterator { public: // Operations. // Constructor. UTL_ScopeActiveIterator (UTL_Scope *s, UTL_Scope::ScopeIterationKind ik); // Advance to next item. void next (); // Get current item. AST_Decl *item (); // Have we iterated over entire scope? bool is_done (); // What kind of iterator is this? UTL_Scope::ScopeIterationKind iteration_kind (); // What stage are we in with this iterator? UTL_Scope::ScopeIterationKind iteration_stage (); private: // Scope to iterate over. UTL_Scope *iter_source; // What kind of iteration? UTL_Scope::ScopeIterationKind ik; // What stage? UTL_Scope::ScopeIterationKind stage; // What location in stage? long il; }; #if defined (ACE_TEMPLATES_REQUIRE_SOURCE) #include "utl_scope_T.cpp" #endif /* ACE_TEMPLATES_REQUIRE_SOURCE */ #if defined (ACE_TEMPLATES_REQUIRE_PRAGMA) #pragma implementation ("utl_scope_T.cpp") #endif /* ACE_TEMPLATES_REQUIRE_PRAGMA */ #endif // _UTL_SCOPE_UTL_SCOPE_HH