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- /* Implement classes and message passing for Objective C.
- Copyright (C) 1990 Free Software Foundation, Inc.
- Author: Steve Naroff.
-
- This file is part of GNU CC.
-
- GNU CC is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- GNU CC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /*
- * Purpose: This module implements the Objective-C 4.0 language.
- *
- * compatibility issues (with the Stepstone translator):
- *
- * - does not recognize the following 3.3 constructs.
- * @requires, @classes, @messages, = (...)
- * - methods with variable arguments must conform to ANSI standard.
- * - tagged structure definitions that appear in BOTH the interface
- * and implementation are not allowed.
- * - public/private: all instance variables are public within the
- * context of the implementation...I consider this to be a bug in
- * the translator.
- * - statically allocated objects are not supported. the user will
- * receive an error if this service is requested.
- *
- * code generation `options':
- *
- * - OBJC_SELS_R_INTS, OBJC_SELS_R_STRUCT_PTRS
- */
-
- #include <stdio.h>
- #include "config.h"
- #include "tree.h"
- #include "flags.h"
- #include "input.h"
- #define NULLT (tree) 0
-
- #ifdef OBJCPLUS
-
- #include "cplus-parse.h"
- #include "cplus-tree.h"
- extern tree make_anon_name ();
-
- /* Hacks to simulate start_struct() and finish_struct(). */
-
- static int cplus_struct_hack = 0;
-
- tree objcplus_start_struct (enum tree_code code, tree name)
- {
- tree s = xref_tag (record_type_node, name ? name : make_anon_name (), 0);
-
- /* simulate `LC' production */
- int temp = allocation_temporary_p ();
- int momentary = suspend_momentary ();
-
- if (temp)
- end_temporary_allocation ();
- cplus_struct_hack = (momentary << 1) | temp;
- pushclass (s, 0);
-
- return s;
- }
-
- static tree objcplus_finish_struct (tree t, tree fieldlist)
- {
- tree s = finish_struct (t,
- build_tree_list ((tree) visibility_default, fieldlist),
- 1, 0 /* dont warn for untagged struct templates */);
-
- if (cplus_struct_hack & 1)
- resume_temporary_allocation ();
- if (cplus_struct_hack & 2)
- resume_momentary (1);
-
- return s;
- }
-
- /* Hacks to simulate push_parm_decl() and objcplus_get_parm_info(). */
-
- static tree objcplus_parmlist = NULLT;
-
- tree objcplus_push_parm_decl (tree parm)
- {
- if (objcplus_parmlist)
- objcplus_parmlist = chainon (objcplus_parmlist, build_tree_list (0, parm));
- else
- objcplus_parmlist = build_tree_list (0, parm);
-
- return objcplus_parmlist;
- }
-
- static tree objcplus_get_parm_info (int void_at_end)
- {
- tree parm_info = objcplus_parmlist;
-
- TREE_PARMLIST (parm_info) = 1;
-
- if (void_at_end)
- chainon (parm_info, void_list_node);
-
- objcplus_parmlist = NULLT;
-
- return parm_info;
- }
-
- static tree objcplus_type_name (tree type)
- {
- if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
- return DECL_NAME (TYPE_NAME (type));
- else
- return TYPE_NAME (type);
- }
-
- static tree objcplus_type_size (tree type)
- {
- int x = TREE_INT_CST_LOW (TYPE_SIZE (type)) * TYPE_SIZE_UNIT (type);
-
- return build_int_2 (x, 0);
- }
-
- /* Macros to cover functions with changed interfaces. */
-
- #define start_struct(code, name) objcplus_start_struct (code, name)
-
- #define finish_struct(code, name) objcplus_finish_struct (code, name)
-
- #define start_function(declspecs, declarator, nested) \
- start_function (declspecs, declarator, NULLT, 0)
-
- #define xref_tag(code, name) xref_tag (record_type_node, name, 0)
-
- #define pushlevel(tag_transparent)
-
- #define poplevel(keep, reverse, functionbody)
-
- #define push_parm_decl(parm) objcplus_push_parm_decl (parm)
-
- #define get_parm_info(void_at_end) objcplus_get_parm_info (void_at_end)
-
- #define grokfield(filename, line, declarator, declspecs, width) \
- grokfield (declarator, declspecs, width, 0, 0)
-
- #define build_component_ref(datum, component) \
- build_component_ref (datum, component, NULLT, 1)
-
- #define comptypes(type1, type2) comptypes (type1, type2, 0)
-
- #define start_decl(declarator, declspecs, spspecs) \
- start_decl (declarator, declspecs, spspecs, NULLT)
-
- #define TREE_CONSTANT(NODE) TREE_READONLY (NODE)
-
- #define TYPE_VOLATILE(NODE) TREE_VOLATILE (NODE)
-
- #undef TYPE_NAME
- #define TYPE_NAME(NODE) objcplus_type_name (NODE)
-
- #undef TYPE_SIZE
- #define TYPE_SIZE(NODE) objcplus_type_size (NODE)
-
- #else /* OBJCPLUS */
-
- #include "c-parse.h"
- #include "c-tree.h"
-
- #endif /* OBJCPLUS */
-
- #include "objc-actions.h"
-
- int doing_objc_thang;
-
- /* Define the special tree codes that we use. */
-
- /* Table indexed by tree code giving a string containing a character
- classifying the tree code. Possibilities are
- t, d, s, c, r, <, 1 and 2. See objc-tree.def for details. */
-
- #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
-
- char *objc_tree_code_type[] = {
- "x",
- #include "objc-tree.def"
- };
- #undef DEFTREECODE
-
- /* Table indexed by tree code giving number of expression
- operands beyond the fixed part of the node structure.
- Not used for types or decls. */
-
- #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
-
- int objc_tree_code_length[] = {
- 0,
- #include "objc-tree.def"
- };
- #undef DEFTREECODE
-
- /* Names of tree components.
- Used for printing out the tree and error messages. */
- #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
-
- char *objc_tree_code_name[] = {
- "@@dummy",
- #include "objc-tree.def"
- };
- #undef DEFTREECODE
-
- /* for encode_method_def */
- #include "rtl.h"
-
- #define OBJC_VERSION 5
- #define PROTOCOL_VERSION 2
-
- #define OBJC_SELS_R_STRUCT_PTRS
-
- #define OBJC_ENCODE_INLINE_DEFS 0
- #define OBJC_ENCODE_DONT_INLINE_DEFS 1
-
- #define OBJC_CLASS_REFS
-
- /*** Private Interface (procedures) ***/
-
- /* code generation */
-
- static void synth_module_prologue ();
- static void build_module_descriptor ();
- static tree init_module_descriptor ();
- static void build_module_entry ();
- static void generate_strings ();
- static void build_selector_translation_table ();
- static tree build_ivar_chain ();
-
- static tree build_ivar_template ();
- static tree build_method_template ();
- static tree build_private_template ();
- static void build_class_template ();
- static void build_category_template ();
- static tree build_super_template ();
- static void build_class_ref_template ();
- static tree build_category_initializer ();
- static tree build_protocol_initializer ();
-
- static void synth_forward_declarations ();
- static void generate_ivar_lists ();
- static void generate_dispatch_tables ();
- static void generate_shared_structures ();
- static tree generate_protocol_list ();
- static void generate_forward_declaration_to_string_table ();
- static void build_protocol_reference ();
-
- static tree init_selector ();
- static tree build_keword_selector ();
- static tree synth_id_with_class_suffix ();
-
- /* misc. bookkeeping */
-
- typedef struct hashedEntry *hash;
- typedef struct hashedAttribute *attr;
-
- struct hashedAttribute {
- attr next;
- tree value;
- };
- struct hashedEntry {
- attr list;
- hash next;
- tree key;
- };
- static void hash_init ();
- static void hash_enter ();
- static hash hash_lookup ();
- static void hash_add_attr ();
- static tree lookup_method ();
- static tree lookup_instance_method_static ();
- static tree lookup_class_method_static ();
- static tree add_class ();
- static void add_class_reference ();
- enum stringSection {
- class_names, /* class, category, protocol, module names */
- meth_var_names, /* method and variable names */
- meth_var_types, /* method and variable type descriptors */
- };
- static tree add_objc_string ();
- static tree build_objc_string_decl ();
- static tree build_selector_reference_decl ();
-
- /* protocol additions */
-
- static tree add_protocol ();
- static tree lookup_protocol ();
- static void lookup_and_install_protocols ();
-
- /* type encoding */
-
- static void encode_aggregate ();
- static void encode_bitfield ();
- static void encode_type ();
- static void encode_field_decl ();
- static void encode_type_qualifiers ();
-
- static void really_start_method ();
- static int comp_method_with_proto ();
- static int comp_proto_with_proto ();
- static tree get_arg_type_list ();
- static tree expr_last ();
-
- /* utilities for debugging and error diagnostics: */
-
- static void warn_with_method ();
- static void error_with_method ();
- static void error_with_ivar ();
- static char *gen_method_decl ();
- static char *gen_declaration ();
- static char *gen_declarator ();
- static int is_complex_decl ();
- static void adorn_decl ();
- static void dump_interfaces ();
-
- /*** Private Interface (data) ***/
-
- /* reserved tag definitions: */
-
- #define TYPE_ID "id"
- #define TAG_OBJECT "objc_object"
- #define TAG_CLASS "objc_class"
- #define TAG_SUPER "objc_super"
- #define TAG_SELECTOR "objc_selector"
-
- #define _TAG_CLASS "_objc_class"
- #define _TAG_IVAR "_objc_ivar"
- #define _TAG_IVAR_LIST "_objc_ivar_list"
- #define _TAG_METHOD "_objc_method"
- #define _TAG_METHOD_LIST "_objc_method_list"
- #define _TAG_CATEGORY "_objc_category"
- #define _TAG_MODULE "_objc_module"
- #define _TAG_SYMTAB "_objc_symtab"
- #define _TAG_SUPER "_objc_super"
-
- #define _TAG_PROTOCOL "_objc_protocol"
- #define _TAG_PROTOCOL_LIST "_objc_protocol_list"
- #define _TAG_METHOD_PROTOTYPE "_objc_method_prototype"
- #define _TAG_METHOD_PROTOTYPE_LIST "_objc_method_prototype_list"
-
- #define STRING_OBJECT_CLASS_NAME "NXConstantString"
- #define PROTOCOL_OBJECT_CLASS_NAME "Protocol"
-
- /* set by `continue_class ()' and checked by `is_public ()' */
-
- #define TREE_STATIC_TEMPLATE(record_type) (TREE_PUBLIC(record_type))
- #define TYPED_OBJECT(type) \
- (TREE_CODE (type) == RECORD_TYPE && TREE_STATIC_TEMPLATE (type))
-
- /* some commonly used instances of "identifier_node". */
-
- static tree self_id, _cmd_id, _msg_id, _msgSuper_id;
- static tree objc_getClass_id, objc_getMetaClass_id;
-
- static tree self_decl, _msg_decl, _msgSuper_decl;
- static tree objc_getClass_decl, objc_getMetaClass_decl;
-
- static tree super_type, _selector_type, id_type, objc_class_type;
- static tree instance_type, protocol_type;
-
- static tree class_chain = NULLT;
- static tree alias_chain = NULLT;
- static tree interface_chain = NULLT;
- static tree protocol_chain = NULLT;
-
- /* chains to manage selectors that are referenced and defined in the module */
-
- static tree cls_ref_chain = NULLT; /* classes referenced */
- static tree sel_ref_chain = NULLT; /* selectors referenced */
-
- /* chains to manage uniquing of strings */
-
- static tree class_names_chain = NULLT;
- static tree meth_var_names_chain = NULLT;
- static tree meth_var_types_chain = NULLT;
-
- /* hash tables to manage the global pool of method prototypes */
-
- static hash *nst_method_hash_list = 0;
- static hash *cls_method_hash_list = 0;
-
- /* the following are used when compiling a class implementation.
- *
- * implementation_template will normally be an anInterface, however if
- * none exists this will be equal to implementation_context...it is
- * set in start_class.
- */
-
- /* backend data declarations */
-
- static tree _OBJC_SYMBOLS_decl;
- static tree _OBJC_INSTANCE_VARIABLES_decl, _OBJC_CLASS_VARIABLES_decl;
- static tree _OBJC_INSTANCE_METHODS_decl, _OBJC_CLASS_METHODS_decl;
- static tree _OBJC_CLASS_decl, _OBJC_METACLASS_decl;
- static tree _OBJC_MODULES_decl;
- static tree _OBJC_STRINGS_decl;
-
- static tree implementation_context = NULLT,
- implementation_template = NULLT;
-
- struct imp_entry {
- struct imp_entry *next;
- tree imp_context;
- tree imp_template;
- tree class_decl; /* _OBJC_CLASS_<my_name>; */
- tree meta_decl; /* _OBJC_METACLASS_<my_name>; */
- };
- static struct imp_entry *imp_list = 0;
- static int imp_count = 0; /* `@implementation' */
- static int cat_count = 0; /* `@category' */
-
- static tree objc_class_template, objc_category_template, _PRIVATE_record;
- static tree objc_protocol_template;
- #ifdef OBJC_CLASS_REFS
- static tree objc_class_ref_template;
- #endif /* OBJC_CLASS_REFS */
- static tree _clsSuper_ref, __clsSuper_ref;
-
- static tree objc_method_template, objc_ivar_template;
- static tree objc_symtab_template, objc_module_template;
- static tree objc_super_template, objc_object_reference;
-
- static tree objc_object_id, objc_class_id, objc_id_id;
- static tree constant_string_id;
- static tree constant_string_type;
- static tree _OBJC_SUPER_decl;
-
- static tree method_context = NULLT;
- static int method_slot = 0; /* used by start_method_def */
-
- #define BUFSIZE 1024
-
- static char *errbuf; /* a buffer for error diagnostics */
- static char *utlbuf; /* a buffer for general utility */
-
- /* services imported from "varasm.c" */
-
- extern void assemble_asm ();
-
- /* services imported from "final.c" */
-
- extern void app_disable ();
-
- extern char *strcpy (),*strcat ();
-
- extern tree groktypename_in_parm_context ();
-
- extern struct obstack permanent_obstack, *current_obstack, *rtl_obstack;
-
- /* data imported from toplev.c */
-
- extern char *dump_base_name;
-
- /* Open and close the file for outputting class declarations, if requested. */
-
- int flag_gen_declaration = 0;
-
- FILE *gen_declaration_file;
-
- /* Warn if multiple methods are seen for the same selector, but with
- different argument types. */
-
- int warn_selector = 0;
-
- void
- lang_init ()
- {
- /* the beginning of the file is a new line; check for # */
- /* With luck, we discover the real source file's name from that
- and put it in input_filename. */
- ungetc (check_newline (), finput);
-
- /* If gen_declaration desired, open the output file. */
- if (flag_gen_declaration)
- {
- int dump_base_name_length = strlen (dump_base_name);
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 7);
- strcpy (dumpname, dump_base_name);
- strcat (dumpname, ".decl");
- gen_declaration_file = fopen (dumpname, "w");
- if (gen_declaration_file == 0)
- pfatal_with_name (dumpname);
- }
-
- if (doing_objc_thang)
- init_objc ();
- }
-
- static void
- objc_fatal ()
- {
- #ifdef OBJCPLUS
- fatal ("Objective-C text in C++ source file: use -ObjC++");
- #else /* OBJCPLUS */
- fatal ("Objective-C text in C++ source file: use -ObjC");
- #endif /* OBJCPLUS */
- }
-
- void
- objc_finish ()
- {
- if (doing_objc_thang)
- finish_objc (); /* Objective-C finalization */
-
- if (gen_declaration_file)
- fclose (gen_declaration_file);
- }
-
- void
- lang_finish ()
- {
- }
-
- int
- lang_decode_option (p)
- char *p;
- {
- if (!strcmp (p, "-lang-objc"))
- doing_objc_thang = 1;
- else if (!strcmp (p, "-gen-decls"))
- flag_gen_declaration = 1;
- else if (!strcmp (p, "-Wselector"))
- warn_selector = 1;
- else
- #ifdef OBJCPLUS
- return cplus_decode_option (p);
- #else /* OBJCPLUS */
- return c_decode_option (p);
- #endif /* OBJCPLUS */
-
- return 1;
- }
-
- static tree
- define_decl (declarator, declspecs)
- tree declarator;
- tree declspecs;
- {
- tree decl = start_decl (declarator, declspecs, 0);
- finish_decl (decl, NULLT, NULLT);
- return decl;
- }
-
- /*
- * rules for statically typed objects...called from `c-typeck.comptypes'.
- *
- * an assignment of the form `a' = `b' is permitted if:
- *
- * - `a' is of type "id".
- * - `a' and `b' are the same class type.
- * - `a' and `b' are of class types A and B such that B is a descendant
- * of A.
- */
-
- int
- maybe_objc_comptypes (lhs, rhs)
- tree lhs, rhs;
- {
- if (doing_objc_thang)
- return objc_comptypes (lhs, rhs);
- return 0;
- }
-
- static tree
- lookup_method_in_protocol_list (rproto_list, sel_name, class_meth)
- tree rproto_list;
- tree sel_name;
- int class_meth;
- {
- tree rproto, p;
- tree fnd = 0;
-
- for (rproto = rproto_list; rproto; rproto = TREE_CHAIN(rproto))
- {
- p = TREE_VALUE(rproto);
-
- if (TREE_CODE(p) == PROTOCOL_INTERFACE)
- {
- if (fnd = lookup_method (class_meth ? PROTOCOL_CLS_METHODS (p) : PROTOCOL_NST_METHODS (p), sel_name))
- ;
- else if (PROTOCOL_LIST(rproto))
- fnd = lookup_method_in_protocol_list(PROTOCOL_LIST(p), sel_name, class_meth);
- }
- else
- ; /* an identifier...if we could not find a protocol. */
-
- if (fnd)
- return fnd;
- }
- return 0;
- }
-
- static tree
- lookup_protocol_in_reflist (rproto_list, lproto)
- tree rproto_list;
- tree lproto;
- {
- tree rproto, p;
-
- /* make sure the protocol is support by the object on the rhs */
- if (TREE_CODE(lproto) == PROTOCOL_INTERFACE)
- {
- tree fnd = 0;
- for (rproto = rproto_list; rproto; rproto = TREE_CHAIN(rproto))
- {
- p = TREE_VALUE(rproto);
-
- if (TREE_CODE(p) == PROTOCOL_INTERFACE)
- {
- if (lproto == p)
- fnd = lproto;
-
- else if (PROTOCOL_LIST(rproto))
- fnd = lookup_protocol_in_reflist(PROTOCOL_LIST(p), lproto);
- }
-
- if (fnd)
- return fnd;
- }
- }
- else
- ; /* an identifier...if we could not find a protocol. */
-
- return 0;
- }
-
- int
- objc_comptypes (lhs, rhs)
- tree lhs;
- tree rhs;
- {
- /* new clause for protocols */
-
- if ((TREE_CODE (lhs) == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (lhs)) == RECORD_TYPE)
- && (TREE_CODE (rhs) == POINTER_TYPE
- && TREE_CODE (TREE_TYPE (rhs)) == RECORD_TYPE))
- {
- int lhs_is_proto = (TYPE_MAIN_VARIANT (lhs) == id_type
- && lhs != id_type);
- int rhs_is_proto = (TYPE_MAIN_VARIANT (rhs) == id_type
- && rhs != id_type);
-
- if (lhs_is_proto)
- {
- tree lproto, lproto_list = TYPE_PROTOCOL_LIST (lhs);
- tree rproto, rproto_list;
- tree p;
-
- if (rhs_is_proto)
- {
- rproto_list = TYPE_PROTOCOL_LIST (rhs);
-
- /* make sure the protocol is supported by the object on the rhs */
- for (lproto = lproto_list; lproto; lproto = TREE_CHAIN(lproto))
- {
- p = TREE_VALUE(lproto);
- rproto = lookup_protocol_in_reflist(rproto_list, p);
-
- if (!rproto)
- warning("object does not conform to the `%s' protocol",
- IDENTIFIER_POINTER(PROTOCOL_NAME(p)));
- }
- }
- else if (TYPED_OBJECT (TREE_TYPE(rhs)))
- {
- tree rname = TYPE_NAME (TREE_TYPE(rhs));
- tree rinter;
-
- /* make sure the protocol is supported by the object on the rhs */
- for (lproto = lproto_list; lproto; lproto = TREE_CHAIN(lproto))
- {
- p = TREE_VALUE(lproto);
- rproto = 0;
- rinter = lookup_interface (rname);
-
- while (rinter && !rproto)
- {
- tree cat;
-
- rproto_list = CLASS_PROTOCOL_LIST(rinter);
- rproto = lookup_protocol_in_reflist(rproto_list, p);
-
- /* NEW!!! */
- /* Check for protocols adopted by categories. */
- cat = CLASS_CATEGORY_LIST (rinter);
- while (cat && !rproto)
- {
- rproto_list = CLASS_PROTOCOL_LIST (cat);
- rproto = lookup_protocol_in_reflist (rproto_list, p);
-
- cat = CLASS_CATEGORY_LIST (cat);
- }
-
- rinter = lookup_interface (CLASS_SUPER_NAME (rinter));
- }
- if (!rproto)
- warning("class `%s' does not implement the `%s' protocol",
- IDENTIFIER_POINTER(TYPE_NAME (TREE_TYPE(rhs))),
- IDENTIFIER_POINTER(PROTOCOL_NAME(p)));
- }
- }
-
- return 1; /* may change...based on whether there was any mismatch */
- }
- else if (rhs_is_proto)
- {
- /* lhs is not a protocol...warn if it is statically typed */
-
- if (TYPED_OBJECT (TREE_TYPE(lhs)))
- return 0;
- else
- return 1; /* one of the types is a protocol */
- }
- else
- return 2; /* defer to comptypes */
- }
- else if (TREE_CODE (lhs) == RECORD_TYPE && TREE_CODE (rhs) == RECORD_TYPE)
- ; /* fall thru...this is the case we have been handling all along */
- else
- return 2; /* defer to comptypes */
-
- /* End of new protocol support. */
-
- /* `id' = `<class> *', `<class> *' = `id' */
-
- if ((TYPE_NAME (lhs) == objc_object_id && TYPED_OBJECT (rhs))
- || (TYPED_OBJECT (lhs) && TYPE_NAME (rhs) == objc_object_id))
- return 1;
-
- /* `id' = `Class', `Class' = `id' */
-
- else if ((TYPE_NAME (lhs) == objc_object_id &&
- TYPE_NAME (rhs) == objc_class_id) ||
- (TYPE_NAME (lhs) == objc_class_id &&
- TYPE_NAME (rhs) == objc_object_id))
- return 1;
-
- /* `<class> *' = `<class> *' */
-
- else if (TYPED_OBJECT (lhs) && TYPED_OBJECT (rhs))
- {
- tree lname = TYPE_NAME (lhs), rname = TYPE_NAME (rhs);
-
- if (lname == rname)
- return 1;
- else
- {
- /* if the left hand side is a super class of the right hand side,
- allow it...
- */
- tree rinter = lookup_interface (rname);
-
- while (rinter)
- {
- if (lname == CLASS_SUPER_NAME (rinter))
- return 1;
-
- rinter = lookup_interface (CLASS_SUPER_NAME (rinter));
- }
-
- return 0;
- }
- }
- else
- return 0;
- }
-
- /* Called from c-decl.c before all calls to rest_of_decl_compilation. */
-
- void
- maybe_objc_check_decl (decl)
- tree decl;
- {
- if (doing_objc_thang)
- objc_check_decl (decl);
- }
-
- void
- objc_check_decl (decl)
- tree decl;
- {
- tree type = TREE_TYPE (decl);
- static int alreadyWarned = 0;
-
- if (TREE_CODE (type) == RECORD_TYPE && TREE_STATIC_TEMPLATE (type)
- && type != constant_string_type)
- {
- if (!alreadyWarned)
- {
- error ("GNU compiler does not support statically allocated objects");
- alreadyWarned = 1;
- }
- error_with_decl (decl, "`%s' cannot be statically allocated");
- }
- }
-
- /* implement static typing. at this point, we know we have an interface... */
-
- tree
- get_static_reference (ident, protocols)
- tree ident;
- tree protocols;
- {
- tree type = xref_tag (RECORD_TYPE, ident);
-
- if (protocols)
- {
- tree proto, t, m = TYPE_MAIN_VARIANT (type);
- struct obstack *ambient_obstack = current_obstack;
-
- current_obstack = &permanent_obstack;
- t = copy_node (type);
-
- /* Add this type to the chain of variants of TYPE. */
- TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (m);
- TYPE_NEXT_VARIANT (m) = t;
-
- current_obstack = ambient_obstack;
-
- /* look up protocols...and install in lang specific list */
-
- TYPE_PROTOCOL_LIST (t) = protocols;
- lookup_and_install_protocols (protocols);
-
- /* this forces a new pointer type to be created later
- * (in build_pointer_type())...so that the new template
- * we just created will actually be used...what a hack!
- */
- if (TYPE_POINTER_TO (t))
- TYPE_POINTER_TO(t) = NULL;
-
- type = t;
- }
-
- return type;
- }
-
- tree
- get_object_reference (protocols)
- tree protocols;
- {
- tree type_decl = lookup_name (objc_id_id);
- tree type;
-
- if (type_decl && (TREE_CODE(type_decl) == TYPE_DECL))
- {
- type = TREE_TYPE (type_decl);
- if (TYPE_MAIN_VARIANT(type) != id_type)
- warning("Unexpected type for `id' (%s)",
- gen_declaration(type,errbuf));
- }
- else
- {
- error ("Undefined type `id', please import <objc/objc.h>");
- exit(1);
- }
-
- /* this clause creates a new pointer type that is qualified with
- the protocol specification...this info is used later to do more
- elaborate type checking.
- */
- if (protocols)
- {
- tree proto, t, m = TYPE_MAIN_VARIANT (type);
- struct obstack *ambient_obstack = current_obstack;
-
- current_obstack = &permanent_obstack;
- t = copy_node (type);
-
- /* Add this type to the chain of variants of TYPE. */
- TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (m);
- TYPE_NEXT_VARIANT (m) = t;
-
- current_obstack = ambient_obstack;
-
- /* look up protocols...and install in lang specific list */
-
- TYPE_PROTOCOL_LIST (t) = protocols;
- lookup_and_install_protocols (protocols);
-
- /* this forces a new pointer type to be created later
- * (in build_pointer_type())...so that the new template
- * we just created will actually be used...what a hack!
- */
- if (TYPE_POINTER_TO (t))
- TYPE_POINTER_TO(t) = NULL;
-
- type = t;
- }
- return type;
- }
-
- static void
- lookup_and_install_protocols (protocols)
- tree protocols;
- {
- tree proto;
-
- for (proto = protocols; proto; proto = TREE_CHAIN (proto))
- {
- tree ident = TREE_VALUE (proto);
- tree p = lookup_protocol (ident);
-
- if (!p)
- error ("Cannot find protocol declaration for `%s'",
- IDENTIFIER_POINTER (ident));
- else /* replace identifier with actual protocol node */
- TREE_VALUE(proto) = p;
- }
- }
-
- /*
- * purpose: "play" parser, creating/installing representations
- * of the declarations that are required by Objective-C.
- *
- * model:
- *
- * type_spec--------->sc_spec
- * (tree_list) (tree_list)
- * | |
- * | |
- * identifier_node identifier_node
- */
- static void
- synth_module_prologue ()
- {
- tree sc_spec, type_spec, decl_specs, expr_decl, parms, record;
-
- #ifdef OBJCPLUS
- push_lang_context (lang_name_c);
- #endif /* OBJCPLUS */
-
- /* defined in `objc.h' */
- objc_object_id = get_identifier (TAG_OBJECT);
-
- objc_object_reference = xref_tag (RECORD_TYPE, objc_object_id);
-
- id_type = groktypename (build_tree_list (
- build_tree_list (NULLT, objc_object_reference),
- build1 (INDIRECT_REF, NULLT, NULLT)));
-
- objc_id_id = get_identifier(TYPE_ID);
- objc_class_id = get_identifier (TAG_CLASS);
-
- objc_class_type = groktypename (build_tree_list
- (build_tree_list
- (NULLT, xref_tag (RECORD_TYPE, objc_class_id)),
- build1 (INDIRECT_REF, NULLT, NULLT)));
-
- protocol_type = groktypename (build_tree_list
- (build_tree_list
- (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (PROTOCOL_OBJECT_CLASS_NAME))),
- build1 (INDIRECT_REF, NULLT, NULLT)));
-
- /* Declare SEL type before prototypes for objc_msgSend(), or else those
- struct tags are considered local to the prototype and won't match the one
- in <objc/objc-runtime.h>. */
-
- #ifdef OBJC_SELS_R_INTS
- /* `unsigned int' */
- _selector_type = unsigned_type_node;
- #endif
-
- #ifdef OBJC_SELS_R_STRUCT_PTRS
- /* `struct objc_selector *' */
- _selector_type = groktypename (build_tree_list (
- build_tree_list (NULLT,
- xref_tag (RECORD_TYPE,
- get_identifier (TAG_SELECTOR))),
- build1 (INDIRECT_REF, NULLT, NULLT)));
- #endif
-
- /* forward declare type...or else the prototype for `super' will bitch */
- groktypename (build_tree_list (build_tree_list (NULLT,
- xref_tag (RECORD_TYPE, get_identifier (TAG_SUPER))),
- build1 (INDIRECT_REF, NULLT, NULLT)));
-
- _msg_id = get_identifier ("objc_msgSend");
- _msgSuper_id = get_identifier ("objc_msgSendSuper");
- objc_getClass_id = get_identifier ("objc_getClass");
- objc_getMetaClass_id = get_identifier ("objc_getMetaClass");
-
- /* struct objc_object *objc_msgSend (id, SEL, ...); */
- pushlevel (0);
- decl_specs = build_tree_list (NULLT, objc_object_reference);
- push_parm_decl (build_tree_list (decl_specs,
- build1 (INDIRECT_REF, NULLT, NULLT)));
-
- #ifdef OBJC_SELS_R_INTS
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_UNSIGNED]);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_INT], decl_specs);
- expr_decl = NULLT;
- #endif
-
- #ifdef OBJC_SELS_R_STRUCT_PTRS
- decl_specs = build_tree_list (NULLT,
- xref_tag (RECORD_TYPE,
- get_identifier (TAG_SELECTOR)));
- expr_decl = build1 (INDIRECT_REF, NULLT, NULLT);
- #endif
-
- push_parm_decl (build_tree_list (decl_specs, expr_decl));
- parms = get_parm_info (0);
- poplevel (0, 0, 0);
-
- decl_specs = build_tree_list (NULLT, objc_object_reference);
- expr_decl = build_nt (CALL_EXPR, _msg_id, parms, NULLT);
- expr_decl = build1 (INDIRECT_REF, NULLT, expr_decl);
-
- _msg_decl = define_decl (expr_decl, decl_specs);
-
- /* struct objc_object *objc_msgSendSuper (struct objc_super *, SEL, ...); */
- pushlevel (0);
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (TAG_SUPER)));
- push_parm_decl (build_tree_list (decl_specs,
- build1 (INDIRECT_REF, NULLT, NULLT)));
-
- #ifdef OBJC_SELS_R_INTS
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_UNSIGNED]);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_INT], decl_specs);
- expr_decl = NULLT;
- #endif
-
- #ifdef OBJC_SELS_R_STRUCT_PTRS
- decl_specs = build_tree_list (NULLT,
- xref_tag (RECORD_TYPE,
- get_identifier (TAG_SELECTOR)));
- expr_decl = build1 (INDIRECT_REF, NULLT, NULLT);
- #endif
-
- push_parm_decl (build_tree_list (decl_specs, expr_decl));
- parms = get_parm_info (0);
- poplevel (0, 0, 0);
-
- decl_specs = build_tree_list (NULLT, objc_object_reference);
- expr_decl = build_nt (CALL_EXPR, _msgSuper_id, parms, NULLT);
- expr_decl = build1 (INDIRECT_REF, NULLT, expr_decl);
-
- _msgSuper_decl = define_decl (expr_decl, decl_specs);
-
- /* id objc_getClass (const char *); */
- pushlevel (0);
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_CONST]);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_CHAR], decl_specs);
- push_parm_decl (build_tree_list (decl_specs,
- build1 (INDIRECT_REF, NULLT, NULLT)));
- parms = get_parm_info (1);
- poplevel (0, 0, 0);
- decl_specs = build_tree_list (NULLT, objc_object_reference);
- expr_decl = build_nt (CALL_EXPR, objc_getClass_id, parms, NULLT);
- expr_decl = build1 (INDIRECT_REF, NULLT, expr_decl);
-
- objc_getClass_decl = define_decl (expr_decl, decl_specs);
-
- /* id objc_getMetaClass (const char *); */
- pushlevel (0);
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_CONST]);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_CHAR], decl_specs);
- push_parm_decl (build_tree_list (decl_specs,
- build1 (INDIRECT_REF, NULLT, NULLT)));
- parms = get_parm_info (1);
- poplevel (0, 0, 0);
- decl_specs = build_tree_list (NULLT, objc_object_reference);
- expr_decl = build_nt (CALL_EXPR, objc_getMetaClass_id, parms, NULLT);
- expr_decl = build1 (INDIRECT_REF, NULLT, expr_decl);
-
- objc_getMetaClass_decl = define_decl (expr_decl, decl_specs);
-
- generate_forward_declaration_to_string_table ();
-
- /* Forward declare constant_string_id and constant_string_type. */
- constant_string_id = get_identifier (STRING_OBJECT_CLASS_NAME);
- constant_string_type = xref_tag (RECORD_TYPE, constant_string_id);
-
- #ifdef OBJC_CLASS_REFS
- build_class_ref_template ();
- #endif /* OBJC_CLASS_REFS */
-
- #ifdef OBJCPLUS
- pop_lang_context ();
- #endif /* OBJCPLUS */
- }
-
- /*
- * custom "build_string ()" which sets TREE_TYPE!
- */
- static tree
- my_build_string (len, str)
- int len;
- char *str;
- {
- int wide_flag = 0;
- tree aString = build_string (len, str);
- /*
- * some code from "combine_strings ()", which is local to c-parse.y.
- */
- if (TREE_TYPE (aString) == int_array_type_node)
- wide_flag = 1;
-
- TREE_TYPE (aString) =
- build_array_type (wide_flag ? integer_type_node : char_type_node,
- build_index_type (build_int_2 (len - 1, 0)));
-
- TREE_CONSTANT (aString) = 1; /* puts string in the ".text" segment */
- TREE_STATIC (aString) = 1;
-
- return aString;
- }
-
- /* Return a newly constructed OBJC_STRING_CST node whose value is
- the LEN characters at STR.
- The TREE_TYPE is not initialized. */
-
- tree
- build_objc_string (len, str)
- int len;
- char *str;
- {
- tree s = build_string (len, str);
-
- TREE_CODE (s) = OBJC_STRING_CST;
- return s;
- }
-
- /* Given a chain of OBJC_STRING_CST's, build a static instance of
- NXConstantString which points at the concatenation of those strings.
- We place the string object in the __string_objects section of the
- __OBJC segment. The Objective-C runtime will initialize the isa
- pointers of the string objects to point at the NXConstantString
- class object. */
-
- tree
- build_objc_string_object (strings)
- tree strings;
- {
- tree string, initlist, constructor;
- int length;
-
- if (!doing_objc_thang)
- objc_fatal ();
-
- if (lookup_interface (constant_string_id) == NULLT)
- {
- error ("Cannot find interface declaration for `%s'",
- IDENTIFIER_POINTER (constant_string_id));
- return error_mark_node;
- }
-
- add_class_reference (constant_string_id);
-
- /* combine_strings will work for OBJC_STRING_CST's too. */
- string = combine_strings (strings);
- TREE_CODE (string) = STRING_CST;
- length = TREE_STRING_LENGTH (string) - 1;
-
- /* & ((NXConstantString) {0, string, length}) */
-
- initlist = build_tree_list (NULLT, build_int_2 (0, 0));
- initlist = tree_cons (NULLT, build_unary_op (ADDR_EXPR, string, 1),
- initlist);
- initlist = tree_cons (NULLT, build_int_2 (length, 0), initlist);
- constructor = build (CONSTRUCTOR, constant_string_type, NULLT,
- nreverse (initlist));
- TREE_CONSTANT (constructor) = 1;
- TREE_STATIC (constructor) = 1;
- TREE_READONLY (constructor) = 1;
-
- return build_unary_op (ADDR_EXPR, constructor, 1);
- }
-
- /*
- * struct objc_symtab {
- * long sel_ref_cnt;
- * char *refs;
- * long cls_def_cnt;
- * long cat_def_cnt;
- * void *defs[cls_def_cnt + cat_def_cnt];
- * };
- */
- static void
- build_objc_symtab_template ()
- {
- tree decl_specs, field_decl, field_decl_chain;
-
- objc_symtab_template = start_struct (RECORD_TYPE, get_identifier (_TAG_SYMTAB));
-
- /* long sel_ref_cnt; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_LONG]);
- field_decl = get_identifier ("sel_ref_cnt");
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- #ifdef OBJC_SELS_R_INTS
- /* unsigned int *sel_ref; */
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_UNSIGNED]);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_INT], decl_specs);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("refs"));
- #endif
-
- #ifdef OBJC_SELS_R_STRUCT_PTRS
- /* struct objc_selector **sel_ref; */
- decl_specs = build_tree_list (NULLT,
- xref_tag (RECORD_TYPE,
- get_identifier (TAG_SELECTOR)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("refs"));
- field_decl = build1 (INDIRECT_REF, NULLT, field_decl);
- #endif
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* short cls_def_cnt; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_SHORT]);
- field_decl = get_identifier ("cls_def_cnt");
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* short cat_def_cnt; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_SHORT]);
- field_decl = get_identifier ("cat_def_cnt");
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* void *defs[cls_def_cnt + cat_def_cnt]; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_VOID]);
- field_decl = build_nt (ARRAY_REF, get_identifier ("defs"),
- build_int_2 (imp_count + cat_count, 0));
- field_decl = build1 (INDIRECT_REF, NULLT, field_decl);
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (objc_symtab_template, field_decl_chain);
- }
-
- static tree
- init_def_list ()
- {
- tree expr, initlist = NULLT;
- struct imp_entry *impent;
-
- if (imp_count)
- for (impent = imp_list; impent; impent = impent->next)
- {
- if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION)
- {
- expr = build_unary_op (ADDR_EXPR, impent->class_decl, 0);
- initlist = tree_cons (NULLT, expr, initlist);
- }
- }
-
- if (cat_count)
- for (impent = imp_list; impent; impent = impent->next)
- {
- if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION)
- {
- expr = build_unary_op (ADDR_EXPR, impent->class_decl, 0);
- initlist = tree_cons (NULLT, expr, initlist);
- }
- }
- return build_nt (CONSTRUCTOR, NULLT, nreverse (initlist));
- }
-
- /*
- * struct objc_symtab {
- * long sel_ref_cnt;
- * char *refs;
- * long cls_def_cnt;
- * long cat_def_cnt;
- * void *defs[cls_def_cnt + cat_def_cnt];
- * };
- */
- static tree
- init_objc_symtab ()
- {
- tree initlist;
-
- /* sel_ref_cnt = { ..., 5, ... } */
-
- initlist = build_tree_list (NULLT, build_int_2 (0, 0));
-
- /* refs = { ..., _OBJC_SELECTOR_REFERENCES, ... } */
-
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
-
- /* cls_def_cnt = { ..., 5, ... } */
-
- initlist = tree_cons (NULLT, build_int_2 (imp_count, 0), initlist);
-
- /* cat_def_cnt = { ..., 5, ... } */
-
- initlist = tree_cons (NULLT, build_int_2 (cat_count, 0), initlist);
-
- /* cls_def = { ..., { &Foo, &Bar, ...}, ... } */
-
- if (imp_count || cat_count)
- initlist = tree_cons (NULLT, init_def_list (), initlist);
-
- return build_nt (CONSTRUCTOR, NULLT, nreverse (initlist));
- }
-
- static void
- forward_declare_categories ()
- {
- struct imp_entry *impent;
- tree sav = implementation_context;
- for (impent = imp_list; impent; impent = impent->next)
- {
- if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION)
- {
- tree sc_spec, decl_specs, decl;
-
- sc_spec = build_tree_list (NULLT, ridpointers[(int) RID_EXTERN]);
- decl_specs = tree_cons (NULLT, objc_category_template, sc_spec);
-
- implementation_context = impent->imp_context;
- impent->class_decl = define_decl (
- synth_id_with_class_suffix ("_OBJC_CATEGORY", implementation_context),
- decl_specs);
- }
- }
- implementation_context = sav;
- }
-
- static void
- generate_objc_symtab_decl ()
- {
- tree sc_spec;
-
- if (!objc_category_template)
- build_category_template ();
-
- /* forward declare categories */
- if (cat_count)
- forward_declare_categories ();
-
- if (!objc_symtab_template)
- build_objc_symtab_template ();
-
- sc_spec = build_tree_list (NULLT, ridpointers[(int) RID_STATIC]);
-
- _OBJC_SYMBOLS_decl = start_decl (get_identifier ("_OBJC_SYMBOLS"),
- tree_cons (NULLT, objc_symtab_template, sc_spec), 1);
-
- finish_decl (_OBJC_SYMBOLS_decl, init_objc_symtab (), NULLT);
- }
-
- /*
- * tree_node------->tree_node----->...
- * | |
- * | (value) | (value)
- * | |
- * expr expr
- */
- static tree
- init_module_descriptor ()
- {
- tree initlist, expr;
-
- /* version = { 1, ... } */
-
- expr = build_int_2 (OBJC_VERSION, 0);
- initlist = build_tree_list (NULLT, expr);
-
- /* size = { ..., sizeof (struct objc_module), ... } */
-
- expr = build_int_2 (TREE_INT_CST_LOW (TYPE_SIZE (objc_module_template)) /
- BITS_PER_UNIT, 0);
- initlist = tree_cons (NULLT, expr, initlist);
-
- /* name = { ..., "foo.m", ... } */
-
- expr = add_objc_string (get_identifier (input_filename), class_names);
- initlist = tree_cons (NULLT, expr, initlist);
-
- /* symtab = { ..., _OBJC_SYMBOLS, ... } */
-
- if (_OBJC_SYMBOLS_decl)
- expr = build_unary_op (ADDR_EXPR, _OBJC_SYMBOLS_decl, 0);
- else
- expr = build_int_2 (0, 0);
- initlist = tree_cons (NULLT, expr, initlist);
-
- return build_nt (CONSTRUCTOR, NULLT, nreverse (initlist));
- }
-
- /*
- * struct objc_module { ... } _OBJC_MODULE = { ... };
- */
- static void
- build_module_descriptor ()
- {
- tree decl_specs, field_decl, field_decl_chain;
-
- objc_module_template = start_struct (RECORD_TYPE, get_identifier (_TAG_MODULE));
-
- /* long version; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_LONG]);
- field_decl = get_identifier ("version");
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- /* long size; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_LONG]);
- field_decl = get_identifier ("size");
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* char *name; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_CHAR]);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("name"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_symtab *symtab; */
-
- decl_specs = get_identifier (_TAG_SYMTAB);
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE, decl_specs));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("symtab"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (objc_module_template, field_decl_chain);
-
- /* create an instance of "objc_module" */
-
- decl_specs = tree_cons (NULLT, objc_module_template,
- build_tree_list (NULLT, ridpointers[(int) RID_STATIC]));
-
- _OBJC_MODULES_decl = start_decl (get_identifier ("_OBJC_MODULES"),
- decl_specs, 1);
-
- finish_decl (_OBJC_MODULES_decl, init_module_descriptor (), NULLT);
-
- /* Mark the decl as used to avoid "defined but not used" warning. */
- TREE_USED (_OBJC_MODULES_decl) = 1;
- }
-
- /* extern const char _OBJC_STRINGS[]; */
-
- static void
- generate_forward_declaration_to_string_table ()
- {
- tree sc_spec, decl_specs, expr_decl;
-
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_EXTERN], NULLT);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_CHAR], sc_spec);
-
- expr_decl = build_nt (ARRAY_REF, get_identifier ("_OBJC_STRINGS"), NULLT);
-
- _OBJC_STRINGS_decl = define_decl (expr_decl, decl_specs);
- }
-
- /* Output all strings. */
-
- static void
- generate_strings ()
- {
- tree sc_spec, decl_specs, expr_decl;
- tree chain, string_expr;
- tree string, decl;
-
- for (chain = class_names_chain; chain; chain = TREE_CHAIN (chain))
- {
- string = TREE_VALUE (chain);
- decl = TREE_PURPOSE (chain);
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_STATIC], NULLT);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_CHAR], sc_spec);
- expr_decl = build_nt (ARRAY_REF, DECL_NAME (decl), NULLT);
- decl = start_decl (expr_decl, decl_specs, 1);
- string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
- IDENTIFIER_POINTER (string));
- finish_decl (decl, string_expr, NULLT);
- }
-
- for (chain = meth_var_names_chain; chain; chain = TREE_CHAIN (chain))
- {
- string = TREE_VALUE (chain);
- decl = TREE_PURPOSE (chain);
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_STATIC], NULLT);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_CHAR], sc_spec);
- expr_decl = build_nt (ARRAY_REF, DECL_NAME (decl), NULLT);
- decl = start_decl (expr_decl, decl_specs, 1);
- string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
- IDENTIFIER_POINTER (string));
- finish_decl (decl, string_expr, NULLT);
- }
-
- for (chain = meth_var_types_chain; chain; chain = TREE_CHAIN (chain))
- {
- string = TREE_VALUE (chain);
- decl = TREE_PURPOSE (chain);
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_STATIC], NULLT);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_CHAR], sc_spec);
- expr_decl = build_nt (ARRAY_REF, DECL_NAME (decl), NULLT);
- decl = start_decl (expr_decl, decl_specs, 1);
- string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
- IDENTIFIER_POINTER (string));
- finish_decl (decl, string_expr, NULLT);
- }
- }
-
- static tree
- build_selector_reference_decl (name)
- tree name;
- {
- tree decl, ident;
- char buf[256];
- struct obstack *save_current_obstack = current_obstack;
- struct obstack *save_rtl_obstack = rtl_obstack;
- static int idx = 0;
-
- sprintf (buf, "_OBJC_SELECTOR_REFERENCES_%d", idx++);
-
- /* new stuff */
- rtl_obstack = current_obstack = &permanent_obstack;
- ident = get_identifier (buf);
-
- decl = build_decl (VAR_DECL, ident, _selector_type);
- TREE_EXTERNAL (decl) = 1;
- TREE_PUBLIC (decl) = 1;
- TREE_USED (decl) = 1;
- #ifndef OBJCPLUS
- TREE_READONLY (decl) = 1;
- #endif /* not OBJCPLUS */
-
- make_decl_rtl (decl, 0, 1); /* usually called from `rest_of_decl_compilation' */
- pushdecl_top_level (decl); /* our `extended/custom' pushdecl in c-decl.c */
-
- current_obstack = save_current_obstack;
- rtl_obstack = save_rtl_obstack;
-
- return decl;
- }
-
-
- /* Just a handy wrapper for add_objc_string() */
-
- static tree
- build_selector (ident)
- tree ident;
- {
- tree expr = add_objc_string (ident, meth_var_names);
-
- return build_c_cast (_selector_type, expr); /* cast! */
- }
-
- static void
- build_selector_translation_table ()
- {
- tree sc_spec, decl_specs, expr_decl;
- tree chain, initlist = NULLT;
- tree var_decl;
- tree expr, name, decl;
-
- for (chain = sel_ref_chain; chain; chain = TREE_CHAIN (chain))
- {
- expr = build_selector (TREE_VALUE (chain));
- name = DECL_NAME (TREE_PURPOSE (chain));
-
- sc_spec = build_tree_list (NULLT, ridpointers[RID_STATIC]);
-
- #ifdef OBJC_SELS_R_INTS
- /* static unsigned int _OBJC_SELECTOR_REFERENCES_n = ...; */
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_UNSIGNED], sc_spec);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_INT], decl_specs);
- var_decl = name;
- #endif
-
- #ifdef OBJC_SELS_R_STRUCT_PTRS
- /* static struct objc_selector *_OBJC_SELECTOR_REFERENCES_n = ...; */
- decl_specs = tree_cons (NULLT,
- xref_tag (RECORD_TYPE,
- get_identifier (TAG_SELECTOR)),
- sc_spec);
- var_decl = build1 (INDIRECT_REF, NULLT, name);
- #endif
-
- /* the `decl' that is returned from start_decl is the one that we
- * forward declared in `build_selector_reference()'
- */
- decl = start_decl (var_decl, decl_specs, 1);
-
- finish_decl (decl, expr, NULLT);
- }
- }
-
- static void
- add_class_reference (ident)
- tree ident;
- {
- tree chain;
-
- if (chain = cls_ref_chain)
- {
- tree tail;
- do
- {
- if (ident == TREE_VALUE (chain))
- return;
-
- tail = chain;
- chain = TREE_CHAIN (chain);
- }
- while (chain);
-
- /* append to the end of the list */
- TREE_CHAIN (tail) = perm_tree_cons (NULLT, ident, NULLT);
- }
- else
- cls_ref_chain = perm_tree_cons (NULLT, ident, NULLT);
- }
-
- /*
- * sel_ref_chain is a list whose "value" fields will be instances of
- * identifier_node that represent the selector.
- */
- static tree
- build_selector_reference (ident)
- tree ident;
- {
- tree *chain = &sel_ref_chain;
- tree decl;
-
- while (*chain)
- {
- if (TREE_VALUE (*chain) == ident)
- return TREE_PURPOSE (*chain);
-
- chain = &TREE_CHAIN (*chain);
- }
-
- decl = build_selector_reference_decl (ident);
-
- *chain = perm_tree_cons (decl, ident, NULLT);
-
- return decl;
- }
-
- /*
- * sel_refdef_chain is a list whose "value" fields will be instances of
- * identifier_node that represent the selector. It returns the offset of
- * the selector from the beginning of the _OBJC_STRINGS pool. This offset
- * is typically used by "init_selector ()" during code generation.
- */
-
- /* For each string section we have a chain which maps identifier nodes to
- decls for the strings. */
- static tree
- add_objc_string (ident, section)
- tree ident;
- enum stringSection section;
- {
- tree *chain, decl;
-
- if (section == class_names)
- chain = &class_names_chain;
- else if (section == meth_var_names)
- chain = &meth_var_names_chain;
- else if (section == meth_var_types)
- chain = &meth_var_types_chain;
-
- while (*chain)
- {
- if (TREE_VALUE (*chain) == ident)
- return TREE_PURPOSE (*chain);
-
- chain = &TREE_CHAIN (*chain);
- }
-
- decl = build_objc_string_decl (ident, section);
-
- *chain = perm_tree_cons (decl, ident, NULLT);
-
- return decl;
- }
-
- static tree
- build_objc_string_decl (name, section)
- tree name;
- enum stringSection section;
- {
- tree decl, ident;
- char buf[256];
- struct obstack *save_current_obstack = current_obstack;
- struct obstack *save_rtl_obstack = rtl_obstack;
- static int class_names_idx = 0;
- static int meth_var_names_idx = 0;
- static int meth_var_types_idx = 0;
-
- if (section == class_names)
- sprintf (buf, "_OBJC_CLASS_NAME_%d", class_names_idx++);
- else if (section == meth_var_names)
- sprintf (buf, "_OBJC_METH_VAR_NAME_%d", meth_var_names_idx++);
- else if (section == meth_var_types)
- sprintf (buf, "_OBJC_METH_VAR_TYPE_%d", meth_var_types_idx++);
-
- rtl_obstack = current_obstack = &permanent_obstack;
- ident = get_identifier (buf);
-
- decl = build_decl (VAR_DECL, ident, build_array_type (char_type_node, 0));
- TREE_EXTERNAL (decl) = 1;
- TREE_PUBLIC (decl) = 1;
- TREE_USED (decl) = 1;
- #ifndef OBJCPLUS
- TREE_READONLY (decl) = 1;
- TREE_CONSTANT (decl) = 1;
- #endif /* not OBJCPLUS */
-
- make_decl_rtl (decl, 0, 1); /* usually called from `rest_of_decl_compilation' */
- pushdecl_top_level (decl); /* our `extended/custom' pushdecl in c-decl.c */
-
- current_obstack = save_current_obstack;
- rtl_obstack = save_rtl_obstack;
-
- return decl;
- }
-
-
- void
- objc_declare_alias (alias_ident, class_ident)
- tree alias_ident;
- tree class_ident;
- {
- if (!doing_objc_thang)
- objc_fatal ();
-
- if (is_class_name (class_ident) != class_ident)
- warning ("Cannot find class `%s'", IDENTIFIER_POINTER (class_ident));
- else if (is_class_name (alias_ident))
- warning ("Class `%s' already exists", IDENTIFIER_POINTER (alias_ident));
- else
- alias_chain = tree_cons (class_ident, alias_ident, alias_chain);
- }
-
- void
- objc_declare_class (ident_list)
- tree ident_list;
- {
- tree list;
-
- if (!doing_objc_thang)
- objc_fatal ();
-
- for (list = ident_list; list; list = TREE_CHAIN (list))
- {
- tree ident = TREE_VALUE (list);
- tree decl;
-
- if ((decl = lookup_name (ident)) != 0)
- {
- error ("`%s' redeclared as different kind of symbol",
- IDENTIFIER_POINTER (ident));
- error_with_decl (decl, "previous declaration of `%s'");
- }
-
- if (! is_class_name (ident))
- {
- #ifdef OBJCPLUS
- tree record;
-
- push_lang_context (lang_name_c);
- record = xref_tag (RECORD_TYPE, ident);
- pop_lang_context ();
- #else /* OBJCPLUS */
-
- tree record = xref_tag (RECORD_TYPE, ident);
-
- #endif /* OBJCPLUS */
- TREE_STATIC_TEMPLATE (record) = 1;
- class_chain = tree_cons (NULLT, ident, class_chain);
- }
- }
- }
-
- tree
- is_class_name (ident)
- tree ident;
- {
- tree chain;
-
- if (lookup_interface (ident))
- return ident;
-
- for (chain = class_chain; chain; chain = TREE_CHAIN (chain))
- {
- if (ident == TREE_VALUE (chain))
- return ident;
- }
-
- for (chain = alias_chain; chain; chain = TREE_CHAIN (chain))
- {
- if (ident == TREE_VALUE (chain))
- return TREE_PURPOSE (chain);
- }
-
- return 0;
- }
-
- tree
- lookup_interface (ident)
- tree ident;
- {
- tree chain;
-
- for (chain = interface_chain; chain; chain = TREE_CHAIN (chain))
- {
- if (ident == CLASS_NAME (chain))
- return chain;
- }
-
- return NULLT;
- }
-
- static tree
- objc_copy_list (list, head)
- tree list;
- tree *head;
- {
- tree newlist = NULL_TREE, tail = NULL_TREE;
-
- while (list)
- {
- tail = copy_node (list);
-
- /* the following statement fixes a bug when inheriting instance
- variables that are declared to be bitfields. finish_struct () expects
- to find the width of the bitfield in DECL_INITIAL (), which it
- nulls out after processing the decl of the super class...rather
- than change the way finish_struct () works (which is risky),
- I create the situation it expects...s.naroff (7/23/89).
- */
- #ifdef OBJCPLUS
- if (TREE_PACKED(tail) && DECL_SIZE_UNIT(tail) && DECL_INITIAL(tail) == 0)
- DECL_INITIAL(tail) = build_int_2(DECL_SIZE_UNIT(tail),0);
- #else /* OBJCPLUS */
- if (DECL_BIT_FIELD (tail) && DECL_INITIAL (tail) == 0)
- DECL_INITIAL (tail) = build_int_2 (DECL_FRAME_SIZE (tail), 0);
- #endif /* OBJCPLUS */
-
- newlist = chainon (newlist, tail);
- list = TREE_CHAIN (list);
- }
- *head = newlist;
- return tail;
- }
-
- /* used by:
- * build_private_template (), get_class_ivars (), and continue_class ().
- */
- /* COPY is 1 when called from @defs. In this case copy all fields.
- Otherwise don't copy leaf ivars since we rely on them being side-effected
- exactly once by finish_struct(). (mself 7/26/91) */
- static tree
- build_ivar_chain (interface, copy)
- tree interface;
- int copy;
- {
- tree my_name, super_name, ivar_chain;
-
- my_name = CLASS_NAME (interface);
- super_name = CLASS_SUPER_NAME (interface);
-
- /* Possibly copy leaf ivars. */
- if (copy)
- objc_copy_list (CLASS_IVARS (interface), &ivar_chain);
- else
- ivar_chain = CLASS_IVARS (interface);
-
- while (super_name)
- {
- tree op1;
- tree super_interface = lookup_interface (super_name);
-
- if (!super_interface)
- {
- /* fatal did not work with 2 args...should fix */
- error ("Cannot find interface declaration for `%s', superclass of `%s'",
- IDENTIFIER_POINTER (super_name), IDENTIFIER_POINTER (my_name));
- exit (34);
- }
- if (super_interface == interface)
- {
- fatal ("Circular inheritance in interface declaration for `%s'",
- IDENTIFIER_POINTER (super_name));
- }
- interface = super_interface;
- my_name = CLASS_NAME (interface);
- super_name = CLASS_SUPER_NAME (interface);
-
- op1 = CLASS_IVARS (interface);
- if (op1)
- {
- tree head, tail = objc_copy_list (op1, &head);
-
- /* prepend super class ivars...make a copy of the list, we
- * do not want to alter the original.
- */
- TREE_CHAIN (tail) = ivar_chain;
- ivar_chain = head;
- }
- }
- return ivar_chain;
- }
-
- /*
- * struct <classname> {
- * struct objc_class *isa;
- * ...
- * };
- */
- static tree
- build_private_template (class)
- tree class;
- {
- tree ivar_context;
-
- if (CLASS_STATIC_TEMPLATE (class))
- {
- _PRIVATE_record = CLASS_STATIC_TEMPLATE (class);
- ivar_context = TYPE_FIELDS (CLASS_STATIC_TEMPLATE (class));
- }
- else
- {
- _PRIVATE_record = start_struct (RECORD_TYPE, CLASS_NAME (class));
-
- ivar_context = build_ivar_chain (class, 0);
-
- finish_struct (_PRIVATE_record, ivar_context);
-
- CLASS_STATIC_TEMPLATE (class) = _PRIVATE_record;
-
- /* mark this record as class template - for class type checking */
- TREE_STATIC_TEMPLATE (_PRIVATE_record) = 1;
- }
- instance_type = groktypename (
- build_tree_list (build_tree_list (NULLT, _PRIVATE_record),
- build1 (INDIRECT_REF, NULLT, NULLT)));
- return ivar_context;
- }
-
- /* begin code generation for protocols... */
-
- /*
- * struct objc_protocol {
- * char *protocol_name;
- * struct objc_protocol **protocol_list;
- * struct objc_method_desc *instance_methods;
- * struct objc_method_desc *class_methods;
- * };
- */
- static tree
- build_protocol_template ()
- {
- tree decl_specs, field_decl, field_decl_chain;
- tree template;
-
- template = start_struct (RECORD_TYPE, get_identifier (_TAG_PROTOCOL));
-
- /* struct objc_class *isa; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_CLASS)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("isa"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- /* char *protocol_name; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_CHAR]);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("protocol_name"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_protocol **protocol_list; */
-
- decl_specs = build_tree_list (NULLT, template);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("protocol_list"));
- field_decl = build1 (INDIRECT_REF, NULLT, field_decl);
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_method_list *instance_methods; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_METHOD_PROTOTYPE_LIST)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("instance_methods"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_method_list *class_methods; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_METHOD_PROTOTYPE_LIST)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("class_methods"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- return finish_struct (template, field_decl_chain);
- }
-
- static tree
- build_descriptor_table_initializer (entries, size)
- tree entries;
- int *size;
- {
- tree initlist = NULLT;
-
- do
- {
- initlist = tree_cons (NULLT, build_selector (METHOD_SEL_NAME (entries)), initlist);
-
- initlist = tree_cons (NULLT, add_objc_string (METHOD_ENCODING (entries), meth_var_types), initlist);
-
- (*size)++;
- entries = TREE_CHAIN (entries);
- }
- while (entries);
-
- return build_nt (CONSTRUCTOR, NULLT, nreverse (initlist));
- }
-
- /*
- * struct objc_method_prototype_list {
- * int count;
- * struct objc_method_prototype {
- * SEL name;
- * char *types;
- * } list[1];
- * };
- */
- static tree
- build_method_prototype_list_template (list_type, size)
- tree list_type;
- int size;
- {
- tree objc_ivar_list_id, objc_ivar_list_record;
- tree decl_specs, field_decl, field_decl_chain;
-
- /* generate an unnamed struct definition */
-
- objc_ivar_list_record = start_struct (RECORD_TYPE, NULLT);
-
- /* int method_count; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_INT]);
- field_decl = get_identifier ("method_count");
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- /* struct objc_method method_list[]; */
-
- decl_specs = build_tree_list (NULLT, list_type);
- field_decl = build_nt (ARRAY_REF, get_identifier ("method_list"),
- build_int_2 (size, 0));
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (objc_ivar_list_record, field_decl_chain);
-
- return objc_ivar_list_record;
- }
-
- static tree
- build_method_prototype_template ()
- {
- tree proto_record;
- tree decl_specs, field_decl, field_decl_chain, parms;
-
- proto_record = start_struct (RECORD_TYPE, get_identifier (_TAG_METHOD_PROTOTYPE));
-
- #ifdef OBJC_SELS_R_INTS
- /* unsigned int _cmd; */
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_UNSIGNED], NULLT);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_INT], decl_specs);
- field_decl = get_identifier ("_cmd");
- #endif
-
- #ifdef OBJC_SELS_R_STRUCT_PTRS
- /* struct objc_selector *_cmd; */
- decl_specs = tree_cons (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (TAG_SELECTOR)), NULLT);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("_cmd"));
- #endif
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_CHAR], NULLT);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("method_types"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (proto_record, field_decl_chain);
-
- return proto_record;
- }
-
- static tree
- encode_method_prototype (method_decl, func_decl)
- tree method_decl;
- tree func_decl;
- {
- tree parms;
- int stack_size = 0, i;
- tree user_args;
-
- bzero (utlbuf, BUFSIZE);
-
- /* `oneway' and 'bycopy', for remote object are the only method qualifiers */
- encode_type_qualifiers(TREE_PURPOSE(TREE_TYPE(method_decl)), utlbuf);
-
- /* C type */
- encode_type (TREE_TYPE (TREE_TYPE (func_decl)), utlbuf,
- utlbuf+strlen(utlbuf), OBJC_ENCODE_INLINE_DEFS);
-
- /* stack size */
- for (parms = DECL_ARGUMENTS (func_decl); parms;
- parms = TREE_CHAIN (parms))
- stack_size += TREE_INT_CST_LOW (TYPE_SIZE (DECL_ARG_TYPE (parms)))
- / BITS_PER_UNIT;
-
- sprintf (&utlbuf[strlen (utlbuf)], "%d", stack_size);
-
- user_args = METHOD_SEL_ARGS (method_decl);
-
- /* argument types */
- for (parms = DECL_ARGUMENTS (func_decl), i = 0; parms;
- parms = TREE_CHAIN (parms), i++)
- {
- int offset_in_bytes;
-
- /* process argument qualifiers for user supplied arguments */
- if (i > 1)
- {
- encode_type_qualifiers(TREE_PURPOSE(TREE_TYPE(user_args)), utlbuf);
- user_args = TREE_CHAIN(user_args);
- }
-
- /* type */
- encode_type (TREE_TYPE (parms), utlbuf, utlbuf+strlen(utlbuf),
- OBJC_ENCODE_INLINE_DEFS);
-
- /* compute offset */
- #ifdef OBJCPLUS
- if (DECL_OFFSET (parms) >= 0)
- {
- offset_in_bytes = DECL_OFFSET (parms) / BITS_PER_UNIT;
- #else /* OBJCPLUS */
- if (GET_CODE (DECL_INCOMING_RTL (parms)) == MEM)
- {
- rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
-
- /* ??? Here we assume that the parm address is indexed
- off the frame pointer or arg pointer.
- If that is not true, we produce meaningless results,
- but do not crash. */
- if (GET_CODE (addr) == PLUS
- && GET_CODE (XEXP (addr, 1)) == CONST_INT)
- offset_in_bytes = INTVAL (XEXP (addr, 1));
- else
- offset_in_bytes = 0;
- #endif /* OBJCPLUS */
-
- /* This is the case where the parm is passed as an int or double
- and it is converted to a char, short or float and stored back
- in the parmlist. In this case, describe the parm
- with the variable's declared type, and adjust the address
- if the least significant bytes (which we are using) are not
- the first ones. */
- #ifdef BYTES_BIG_ENDIAN
- if (TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
- offset_in_bytes += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
- - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
- #endif
- }
- else
- offset_in_bytes = 0;
-
- #ifdef OBJCPLUS
- sprintf (&utlbuf[strlen (utlbuf)], "%d", offset_in_bytes);
- #else /* OBJCPLUS */
- /* The "+ 8" is a total hack to account for the return pc and
- saved fp on the 68k. We should redefine this format! */
- sprintf (&utlbuf[strlen (utlbuf)], "%d", offset_in_bytes + 8);
- #endif /* OBJCPLUS */
- }
-
- return get_identifier (utlbuf);
- }
-
- static tree
- generate_descriptor_table (type, name, size, list, proto)
- tree type;
- char *name;
- int size;
- tree list;
- tree proto;
- {
- tree sc_spec, decl_specs, decl, initlist;
-
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_STATIC], NULLT);
- decl_specs = tree_cons (NULLT, type, sc_spec);
-
- decl = start_decl (synth_id_with_class_suffix (name, proto),
- decl_specs, 1);
-
- initlist = build_tree_list (NULLT, build_int_2 (size, 0));
- initlist = tree_cons (NULLT, list, initlist);
-
- finish_decl (decl, build_nt (CONSTRUCTOR, NULLT, nreverse (initlist)), NULLT);
-
- return decl;
- }
-
- static void
- generate_method_descriptors (protocol) /* generate_dispatch_tables */
- tree protocol;
- {
- static tree objc_method_prototype_template;
- tree initlist, chain, method_list_template;
- tree cast, variable_length_type;
- int size;
-
- if (!objc_method_prototype_template)
- objc_method_prototype_template = build_method_prototype_template ();
-
- cast = build_tree_list (build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_METHOD_PROTOTYPE_LIST))), NULLT);
- variable_length_type = groktypename (cast);
-
- chain = PROTOCOL_CLS_METHODS (protocol);
- if (chain)
- {
- size = 0;
-
- initlist = build_descriptor_table_initializer (chain, &size);
-
- method_list_template = build_method_prototype_list_template(
- objc_method_prototype_template, size);
-
- _OBJC_CLASS_METHODS_decl =
- generate_descriptor_table (method_list_template,
- "_OBJC_PROTOCOL_CLASS_METHODS",
- size, initlist, protocol);
- /* cast! */
- TREE_TYPE (_OBJC_CLASS_METHODS_decl) = variable_length_type;
- }
- else
- _OBJC_CLASS_METHODS_decl = 0;
-
- chain = PROTOCOL_NST_METHODS (protocol);
- if (chain)
- {
- size = 0;
- initlist = build_descriptor_table_initializer (chain, &size);
-
- method_list_template = build_method_prototype_list_template(
- objc_method_prototype_template, size);
-
- _OBJC_INSTANCE_METHODS_decl =
- generate_descriptor_table (method_list_template,
- "_OBJC_PROTOCOL_INSTANCE_METHODS",
- size, initlist, protocol);
- /* cast! */
- TREE_TYPE (_OBJC_INSTANCE_METHODS_decl) = variable_length_type;
- }
- else
- _OBJC_INSTANCE_METHODS_decl = 0;
- }
-
- static tree
- build_tmp_function_decl()
- {
- tree decl_specs, expr_decl, parms;
-
- /* struct objc_object *objc_xxx (id, SEL, ...); */
- pushlevel (0);
- decl_specs = build_tree_list (NULLT, objc_object_reference);
- push_parm_decl (build_tree_list (decl_specs,
- build1 (INDIRECT_REF, NULLT, NULLT)));
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (TAG_SELECTOR)));
- expr_decl = build1 (INDIRECT_REF, NULLT, NULLT);
-
- push_parm_decl (build_tree_list (decl_specs, expr_decl));
- parms = get_parm_info (0);
- poplevel (0, 0, 0);
-
- decl_specs = build_tree_list (NULLT, objc_object_reference);
- expr_decl = build_nt (CALL_EXPR, get_identifier("objc_xxx"), parms, NULLT);
- expr_decl = build1 (INDIRECT_REF, NULLT, expr_decl);
-
- return define_decl (expr_decl, decl_specs);
- }
-
- static void
- hack_method_prototype(nst_methods, _tmp_decl)
- tree nst_methods;
- tree _tmp_decl;
- {
- tree parms;
- #ifdef OBJCPLUS
- extern tree last_function_parms;
- #endif /* OBJCPLUS */
-
- /* Hack to avoid problem with static typing of self arg. */
- TREE_CODE(nst_methods) = CLASS_METHOD_DECL;
- start_method_def(nst_methods);
- TREE_CODE(nst_methods) = INSTANCE_METHOD_DECL;
-
- if (METHOD_ADD_ARGS (nst_methods) == (tree)1)
- parms = get_parm_info (0); /* we have a `, ...' */
- else
- parms = get_parm_info (1); /* place a `void_at_end' */
-
- poplevel (0, 0, 0); /* must be called BEFORE "start_function ()" */
-
- /* usually called from store_parm_decls()->init_function_start() */
-
- init_emit(); // needed to make assign_parms() work (with -O)
-
- #ifdef OBJCPLUS
- /* usually called from start_function()->grokdeclarator(). */
- grokparms (parms, 1);
- /* usually done by store_parm_decls(). */
- DECL_ARGUMENTS(_tmp_decl) = last_function_parms;
- #else /* OBJCPLUS */
- DECL_ARGUMENTS(_tmp_decl) = TREE_PURPOSE(parms);
- #endif /* OBJCPLUS */
-
- /* install return type */
- TREE_TYPE (TREE_TYPE (_tmp_decl)) = groktypename (TREE_TYPE (nst_methods));
-
- {
- /* code take from start_function() */
- tree restype = TREE_TYPE (TREE_TYPE (_tmp_decl));
- /* Promote the value to int before returning it. */
- if (TREE_CODE (restype) == INTEGER_TYPE
- && TYPE_PRECISION (restype) < TYPE_PRECISION (integer_type_node))
- restype = integer_type_node;
- DECL_RESULT (_tmp_decl) = build_decl (RESULT_DECL, 0, restype);
- }
-
- /* typically called from expand_function_start() for function definitions */
- assign_parms(_tmp_decl, 0);
-
- /* install return type */
- TREE_TYPE (TREE_TYPE (_tmp_decl)) = groktypename (TREE_TYPE (nst_methods));
- }
-
- static void
- generate_protocol_references (plist)
- tree plist;
- {
- tree lproto;
-
- /* forward declare protocols referenced */
- for (lproto = plist; lproto; lproto = TREE_CHAIN(lproto)) {
- tree proto = TREE_VALUE(lproto);
-
- if ((TREE_CODE(proto) == PROTOCOL_INTERFACE) &&
- PROTOCOL_NAME(proto)) {
-
- if (!PROTOCOL_FORWARD_DECL (proto))
- build_protocol_reference(proto);
-
- if (PROTOCOL_LIST (proto))
- generate_protocol_references(PROTOCOL_LIST (proto));
- }
- }
- }
-
- static void
- generate_protocols ()
- {
- tree p, _tmp_decl, encoding;
- tree sc_spec, decl_specs, decl;
- tree initlist, protocol_name_expr, refs_decl, refs_expr;
- tree cast_type2 = 0, cast_type = 0;
-
- _tmp_decl = build_tmp_function_decl();
-
- if (!objc_protocol_template)
- objc_protocol_template = build_protocol_template ();
-
- /* if a protocol was directly referenced, pull in indirect references */
- for (p = protocol_chain; p; p = TREE_CHAIN(p))
- if (PROTOCOL_FORWARD_DECL (p) && PROTOCOL_LIST (p))
- generate_protocol_references(PROTOCOL_LIST (p));
-
- for (p = protocol_chain; p; p = TREE_CHAIN(p))
- {
- tree nst_methods = PROTOCOL_NST_METHODS(p);
- tree cls_methods = PROTOCOL_CLS_METHODS(p);
- char buf[256];
-
- /* if protocol wasn't referenced, don't generate any code */
- if (!PROTOCOL_FORWARD_DECL (p))
- continue;
-
- /* Make sure we link in the Protocol class. */
- add_class_reference (get_identifier (PROTOCOL_OBJECT_CLASS_NAME));
-
- while (nst_methods)
- {
- hack_method_prototype(nst_methods, _tmp_decl);
- encoding = encode_method_prototype(nst_methods, _tmp_decl);
- METHOD_ENCODING (nst_methods) = encoding;
-
- nst_methods = TREE_CHAIN (nst_methods);
- }
-
- while (cls_methods)
- {
- hack_method_prototype(cls_methods, _tmp_decl);
- encoding = encode_method_prototype(cls_methods, _tmp_decl);
- METHOD_ENCODING (cls_methods) = encoding;
-
- cls_methods = TREE_CHAIN (cls_methods);
- }
- generate_method_descriptors(p);
-
- if (PROTOCOL_LIST(p))
- refs_decl = generate_protocol_list(p);
- else
- refs_decl = 0;
-
- /* static struct objc_protocol _OBJC_PROTOCOL_<mumble>; */
-
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_STATIC], NULLT);
- decl_specs = tree_cons (NULLT, objc_protocol_template, sc_spec);
-
- decl = start_decl (
- synth_id_with_class_suffix ("_OBJC_PROTOCOL", p),
- decl_specs, 1);
-
- protocol_name_expr = add_objc_string (PROTOCOL_NAME (p), class_names);
-
- if (refs_decl)
- {
- if (!cast_type2)
- cast_type2 = groktypename (build_tree_list(
- build_tree_list (NULLT, objc_protocol_template),
- build1 (INDIRECT_REF, NULLT,
- build1 (INDIRECT_REF, NULLT, NULLT))));
-
- refs_expr = build_unary_op (ADDR_EXPR, refs_decl, 0);
- TREE_TYPE(refs_expr) = cast_type2;
- }
- else
- refs_expr = build_int_2 (0, 0);
-
- /* _OBJC_INSTANCE_METHODS_decl/_OBJC_CLASS_METHODS_decl are set
- by generate_method_descriptors(), which is called above */
- initlist = build_protocol_initializer (protocol_name_expr, refs_expr,
- _OBJC_INSTANCE_METHODS_decl,
- _OBJC_CLASS_METHODS_decl);
- finish_decl (decl, initlist, NULLT);
-
- /* Mark the decl as used to avoid "defined but not used" warning. */
- TREE_USED (decl) = 1;
- }
- }
-
- static tree
- build_protocol_initializer (protocol_name, protocol_list,
- instance_methods, class_methods)
- tree protocol_name;
- tree protocol_list;
- tree instance_methods;
- tree class_methods;
- {
- tree initlist = NULLT, expr;
- static tree cast_type = 0;
-
- if (!cast_type)
- cast_type = groktypename (build_tree_list (
- build_tree_list (NULLT,
- xref_tag (RECORD_TYPE, get_identifier (_TAG_CLASS))),
- build1 (INDIRECT_REF, NULLT, NULLT)));
-
- /* filling the "isa" in with one allows the runtime system to
- detect that the version change...should remove before final release */
-
- expr = build_int_2 (PROTOCOL_VERSION, 0);
- TREE_TYPE(expr) = cast_type;
- initlist = tree_cons (NULLT, expr, initlist);
- initlist = tree_cons (NULLT, protocol_name, initlist);
- initlist = tree_cons (NULLT, protocol_list, initlist);
-
- if (!instance_methods)
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
- else
- {
- expr = build_unary_op (ADDR_EXPR, instance_methods, 0);
- initlist = tree_cons (NULLT, expr, initlist);
- }
- if (!class_methods)
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
- else
- {
- expr = build_unary_op (ADDR_EXPR, class_methods, 0);
- initlist = tree_cons (NULLT, expr, initlist);
- }
- return build_nt (CONSTRUCTOR, NULLT, nreverse (initlist));
- }
-
- /* end code generation for protocols... */
-
- /*
- * struct objc_category {
- * char *category_name;
- * char *class_name;
- * struct objc_method_list *instance_methods;
- * struct objc_method_list *class_methods;
- * struct objc_protocol_list *protocols;
- * };
- */
- static void
- build_category_template ()
- {
- tree decl_specs, field_decl, field_decl_chain;
-
- objc_category_template = start_struct (RECORD_TYPE,
- get_identifier (_TAG_CATEGORY));
- /* char *category_name; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_CHAR]);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("category_name"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- /* char *class_name; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_CHAR]);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("class_name"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_method_list *instance_methods; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_METHOD_LIST)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("instance_methods"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_method_list *class_methods; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_METHOD_LIST)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("class_methods"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_protocol **protocol_list; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_PROTOCOL)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("protocol_list"));
- field_decl = build1 (INDIRECT_REF, NULLT, field_decl);
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (objc_category_template, field_decl_chain);
- }
-
- /*
- * struct objc_class {
- * struct objc_class *isa;
- * struct objc_class *super_class;
- * char *name;
- * long version;
- * long info;
- * long instance_size;
- * struct objc_ivar_list *ivars;
- * struct objc_method_list *methods;
- * struct objc_cache *cache;
- * struct objc_protocol_list *protocols;
- * };
- */
- static void
- build_class_template ()
- {
- tree decl_specs, field_decl, field_decl_chain;
-
- objc_class_template = start_struct (RECORD_TYPE, get_identifier (_TAG_CLASS));
-
- /* struct objc_class *isa; */
-
- decl_specs = build_tree_list (NULLT, objc_class_template);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("isa"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- /* struct objc_class *super_class; */
-
- decl_specs = build_tree_list (NULLT, objc_class_template);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("super_class"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* char *name; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_CHAR]);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("name"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* long version; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_LONG]);
- field_decl = get_identifier ("version");
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* long info; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_LONG]);
- field_decl = get_identifier ("info");
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* long instance_size; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_LONG]);
- field_decl = get_identifier ("instance_size");
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_ivar_list *ivars; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_IVAR_LIST)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("ivars"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_method_list *methods; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_METHOD_LIST)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("methods"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_cache *cache; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier ("objc_cache")));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("cache"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_protocol **protocol_list; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_PROTOCOL)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("protocol_list"));
- field_decl = build1 (INDIRECT_REF, NULLT, field_decl);
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (objc_class_template, field_decl_chain);
- }
-
- #ifdef OBJC_CLASS_REFS
- /*
- * struct _objc_class_ref {
- * struct _objc_class *class;
- * };
- */
- static void
- build_class_ref_template ()
- {
- tree decl_specs, field_decl;
-
- objc_class_ref_template
- = start_struct (RECORD_TYPE, get_identifier ("_objc_class_ref"));
-
- /* struct objc_class *class; */
-
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE, get_identifier (TAG_CLASS)));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("class"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- finish_struct (objc_class_ref_template, field_decl);
- }
- #endif /* OBJC_CLASS_REFS */
-
- /*
- * generate appropriate forward declarations for an implementation
- */
- static void
- synth_forward_declarations ()
- {
- tree sc_spec, decl_specs, factory_id, anId;
-
- /* extern struct objc_class _OBJC_CLASS_<my_name>; */
-
- anId = synth_id_with_class_suffix ("_OBJC_CLASS", implementation_context);
-
- sc_spec = build_tree_list (NULLT, ridpointers[(int) RID_EXTERN]);
- decl_specs = tree_cons (NULLT, objc_class_template, sc_spec);
- _OBJC_CLASS_decl = define_decl (anId, decl_specs);
-
- /* extern struct objc_class _OBJC_METACLASS_<my_name>; */
-
- anId = synth_id_with_class_suffix ("_OBJC_METACLASS", implementation_context);
-
- _OBJC_METACLASS_decl = define_decl (anId, decl_specs);
-
- /* pre-build the following entities - for speed/convenience. */
-
- anId = get_identifier ("super_class");
- _clsSuper_ref = build_component_ref (_OBJC_CLASS_decl, anId);
- __clsSuper_ref = build_component_ref (_OBJC_METACLASS_decl, anId);
- }
-
- static void
- error_with_ivar (message, decl, rawdecl)
- char *message;
- tree decl;
- tree rawdecl;
- {
- extern int errorcount;
-
- #ifdef REPORT_EVENT
- bzero (errbuf, BUFSIZE);
- report_event (0, current_function_decl,
- DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl),
- "%s `%s'", message, gen_declaration (rawdecl, errbuf), 0);
- #endif
- fprintf (stderr, "%s:%d: ",
- DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
- bzero (errbuf, BUFSIZE);
- fprintf (stderr, "%s `%s'\n", message, gen_declaration (rawdecl, errbuf));
- errorcount++;
- }
-
- #define USERTYPE(t) (TREE_CODE (t) == RECORD_TYPE || \
- TREE_CODE (t) == UNION_TYPE || \
- TREE_CODE (t) == ENUMERAL_TYPE)
-
- static void
- check_ivars (inter, imp)
- tree inter;
- tree imp;
- {
- tree intdecls = CLASS_IVARS (inter);
- tree impdecls = CLASS_IVARS (imp);
- tree rawintdecls = CLASS_RAW_IVARS (inter);
- tree rawimpdecls = CLASS_RAW_IVARS (imp);
-
- while (1)
- {
- tree t1, t2;
-
- if (intdecls == 0 && impdecls == 0)
- break;
- if (intdecls == 0 || impdecls == 0)
- {
- error ("inconsistent instance variable specification");
- break;
- }
- t1 = TREE_TYPE (intdecls); t2 = TREE_TYPE (impdecls);
-
- if (!comptypes (t1, t2))
- {
- if (DECL_NAME (intdecls) == DECL_NAME (impdecls))
- {
- error_with_ivar ("conflicting instance variable type",
- impdecls, rawimpdecls);
- error_with_ivar ("previous declaration of",
- intdecls, rawintdecls);
- }
- else /* both the type and the name don't match */
- {
- error ("inconsistent instance variable specification");
- break;
- }
- }
- else if (DECL_NAME (intdecls) != DECL_NAME (impdecls))
- {
- error_with_ivar ("conflicting instance variable name",
- impdecls, rawimpdecls);
- error_with_ivar ("previous declaration of",
- intdecls, rawintdecls);
- }
- intdecls = TREE_CHAIN (intdecls);
- impdecls = TREE_CHAIN (impdecls);
- rawintdecls = TREE_CHAIN (rawintdecls);
- rawimpdecls = TREE_CHAIN (rawimpdecls);
- }
- }
-
- /*
- * struct objc_super {
- * id self;
- * struct objc_class *class;
- * };
- */
- static tree
- build_super_template ()
- {
- tree record, decl_specs, field_decl, field_decl_chain;
-
- record = start_struct (RECORD_TYPE, get_identifier (_TAG_SUPER));
-
- /* struct objc_object *self; */
-
- decl_specs = build_tree_list (NULLT, objc_object_reference);
- field_decl = get_identifier ("self");
- field_decl = build1 (INDIRECT_REF, NULLT, field_decl);
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- /* struct objc_class *class; */
-
- decl_specs = get_identifier (_TAG_CLASS);
- decl_specs = build_tree_list (NULLT, xref_tag (RECORD_TYPE, decl_specs));
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("class"));
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (record, field_decl_chain);
-
- /* `struct objc_super *' */
- super_type = groktypename (build_tree_list (build_tree_list (NULLT, record),
- build1 (INDIRECT_REF, NULLT, NULLT)));
- return record;
- }
-
- /*
- * struct objc_ivar {
- * char *ivar_name;
- * char *ivar_type;
- * int ivar_offset;
- * };
- */
- static tree
- build_ivar_template ()
- {
- tree objc_ivar_id, objc_ivar_record;
- tree decl_specs, field_decl, field_decl_chain;
-
- objc_ivar_id = get_identifier (_TAG_IVAR);
- objc_ivar_record = start_struct (RECORD_TYPE, objc_ivar_id);
-
- /* char *ivar_name; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_CHAR]);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("ivar_name"));
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- /* char *ivar_type; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_CHAR]);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("ivar_type"));
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* int ivar_offset; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_INT]);
- field_decl = get_identifier ("ivar_offset");
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (objc_ivar_record, field_decl_chain);
-
- return objc_ivar_record;
- }
-
- /*
- * struct {
- * int ivar_count;
- * struct objc_ivar ivar_list[ivar_count];
- * };
- */
- static tree
- build_ivar_list_template (list_type, size)
- tree list_type;
- int size;
- {
- tree objc_ivar_list_id, objc_ivar_list_record;
- tree decl_specs, field_decl, field_decl_chain;
-
- objc_ivar_list_record = start_struct (RECORD_TYPE, NULLT);
-
- /* int ivar_count; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_INT]);
- field_decl = get_identifier ("ivar_count");
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- /* struct objc_ivar ivar_list[]; */
-
- decl_specs = build_tree_list (NULLT, list_type);
- field_decl = build_nt (ARRAY_REF, get_identifier ("ivar_list"),
- build_int_2 (size, 0));
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (objc_ivar_list_record, field_decl_chain);
-
- return objc_ivar_list_record;
- }
-
- /*
- * struct {
- * int method_next;
- * int method_count;
- * struct objc_method method_list[method_count];
- * };
- */
- static tree
- build_method_list_template (list_type, size)
- tree list_type;
- int size;
- {
- tree objc_ivar_list_id, objc_ivar_list_record;
- tree decl_specs, field_decl, field_decl_chain;
-
- objc_ivar_list_record = start_struct (RECORD_TYPE, NULLT);
-
- /* int method_next; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_INT]);
- field_decl = get_identifier ("method_next");
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- /* int method_count; */
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_INT]);
- field_decl = get_identifier ("method_count");
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* struct objc_method method_list[]; */
-
- decl_specs = build_tree_list (NULLT, list_type);
- field_decl = build_nt (ARRAY_REF, get_identifier ("method_list"),
- build_int_2 (size, 0));
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (objc_ivar_list_record, field_decl_chain);
-
- return objc_ivar_list_record;
- }
-
- static tree
- build_ivar_list_initializer (field_decl, size)
- tree field_decl;
- int *size;
- {
- tree initlist = NULLT;
-
- do
- {
- /* set name */
- if (DECL_NAME (field_decl))
- {
- initlist = tree_cons (NULLT, add_objc_string (DECL_NAME (field_decl), meth_var_names), initlist);
- }
- else
- {
- /* unnamed bit-field ivar (yuck). */
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
- }
-
- /* set type */
- bzero (utlbuf, BUFSIZE);
- encode_field_decl (field_decl, utlbuf, utlbuf,
- OBJC_ENCODE_DONT_INLINE_DEFS);
-
- initlist = tree_cons (NULLT, add_objc_string (get_identifier (utlbuf), meth_var_types), initlist);
-
- /* set offset */
- #ifdef OBJCPLUS
- initlist = tree_cons(NULLT, build_int_2(DECL_OFFSET(field_decl)/
- DECL_SIZE_UNIT(field_decl), 0), initlist);
- #else /* OBJCPLUS */
- initlist = tree_cons (NULLT,
- build_int_2 (TREE_INT_CST_LOW (DECL_FIELD_BITPOS (field_decl)) / BITS_PER_UNIT, 0),
-
- initlist);
- #endif /* OBJCPLUS */
- (*size)++;
- field_decl = TREE_CHAIN (field_decl);
- }
- while (field_decl);
-
- return build_nt (CONSTRUCTOR, NULLT, nreverse (initlist));
- }
-
- static tree
- generate_ivars_list (type, name, size, list)
- tree type;
- char *name;
- int size;
- tree list;
- {
- tree sc_spec, decl_specs, decl, initlist;
-
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_STATIC], NULLT);
- decl_specs = tree_cons (NULLT, type, sc_spec);
-
- decl = start_decl (synth_id_with_class_suffix (name, implementation_context),
- decl_specs, 1);
-
- initlist = build_tree_list (NULLT, build_int_2 (size, 0));
- initlist = tree_cons (NULLT, list, initlist);
-
- finish_decl (decl, build_nt (CONSTRUCTOR, NULLT, nreverse (initlist)), NULLT);
-
- return decl;
- }
-
- static void
- generate_ivar_lists ()
- {
- tree initlist, ivar_list_template, chain;
- tree cast, variable_length_type;
- int size;
-
- if (!objc_ivar_template)
- objc_ivar_template = build_ivar_template ();
-
- cast = build_tree_list (build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_IVAR_LIST))), NULLT);
- variable_length_type = groktypename (cast);
-
- /* only generate class variables for the root of the inheritance
- hierarchy since these will be the same for every class */
-
- if (CLASS_SUPER_NAME (implementation_template) == NULLT
- && (chain = TYPE_FIELDS (objc_class_template)))
- {
- size = 0;
- initlist = build_ivar_list_initializer (chain, &size);
-
- ivar_list_template = build_ivar_list_template (objc_ivar_template, size);
-
- _OBJC_CLASS_VARIABLES_decl =
- generate_ivars_list (ivar_list_template, "_OBJC_CLASS_VARIABLES",
- size, initlist);
- /* cast! */
- TREE_TYPE (_OBJC_CLASS_VARIABLES_decl) = variable_length_type;
- }
- else
- _OBJC_CLASS_VARIABLES_decl = 0;
-
- chain = CLASS_IVARS (implementation_template);
- if (chain)
- {
- size = 0;
- initlist = build_ivar_list_initializer (chain, &size);
-
- ivar_list_template = build_ivar_list_template (objc_ivar_template, size);
-
- _OBJC_INSTANCE_VARIABLES_decl =
- generate_ivars_list (ivar_list_template, "_OBJC_INSTANCE_VARIABLES",
- size, initlist);
- /* cast! */
- TREE_TYPE (_OBJC_INSTANCE_VARIABLES_decl) = variable_length_type;
- }
- else
- _OBJC_INSTANCE_VARIABLES_decl = 0;
- }
-
- static tree
- build_dispatch_table_initializer (entries, size)
- tree entries;
- int *size;
- {
- tree initlist = NULLT;
-
- do
- {
- initlist = tree_cons (NULLT, build_selector (METHOD_SEL_NAME (entries)), initlist);
-
- initlist = tree_cons (NULLT, add_objc_string (METHOD_ENCODING (entries), meth_var_types), initlist);
-
- initlist = tree_cons (NULLT, METHOD_DEFINITION (entries), initlist);
-
- (*size)++;
- entries = TREE_CHAIN (entries);
- }
- while (entries);
-
- return build_nt (CONSTRUCTOR, NULLT, nreverse (initlist));
- }
-
- /*
- * To accomplish method prototyping without generating all kinds of
- * inane warnings, the definition of the dispatch table entries were
- * changed from:
- *
- * struct objc_method { SEL _cmd; id (*_imp)(); };
- * to:
- * struct objc_method { SEL _cmd; void *_imp; };
- */
- static tree
- build_method_template ()
- {
- tree _SLT_record;
- tree decl_specs, field_decl, field_decl_chain, parms;
-
- _SLT_record = start_struct (RECORD_TYPE, get_identifier (_TAG_METHOD));
-
- #ifdef OBJC_SELS_R_INTS
- /* unsigned int _cmd; */
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_UNSIGNED], NULLT);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_INT], decl_specs);
- field_decl = get_identifier ("_cmd");
- #endif
-
- #ifdef OBJC_SELS_R_STRUCT_PTRS
- /* struct objc_selector *_cmd; */
- decl_specs = tree_cons (NULLT,
- xref_tag (RECORD_TYPE,
- get_identifier (TAG_SELECTOR)),
- NULLT);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("_cmd"));
- #endif
-
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- field_decl_chain = field_decl;
-
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_CHAR], NULLT);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("method_types"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- /* void *_imp; */
-
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_VOID], NULLT);
- field_decl = build1 (INDIRECT_REF, NULLT, get_identifier ("_imp"));
- field_decl = grokfield (input_filename, lineno, field_decl, decl_specs, NULLT);
- chainon (field_decl_chain, field_decl);
-
- finish_struct (_SLT_record, field_decl_chain);
-
- return _SLT_record;
- }
-
-
- static tree
- generate_dispatch_table (type, name, size, list)
- tree type;
- char *name;
- int size;
- tree list;
- {
- tree sc_spec, decl_specs, decl, initlist;
-
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_STATIC], NULLT);
- decl_specs = tree_cons (NULLT, type, sc_spec);
-
- decl = start_decl (synth_id_with_class_suffix (name, implementation_context),
- decl_specs, 1);
-
- initlist = build_tree_list (NULLT, build_int_2 (0, 0));
- initlist = tree_cons (NULLT, build_int_2 (size, 0), initlist);
- initlist = tree_cons (NULLT, list, initlist);
-
- finish_decl (decl, build_nt (CONSTRUCTOR, NULLT, nreverse (initlist)), NULLT);
-
- return decl;
- }
-
- static void
- generate_dispatch_tables ()
- {
- tree initlist, chain, method_list_template;
- tree cast, variable_length_type;
- int size;
-
- if (!objc_method_template)
- objc_method_template = build_method_template ();
-
- cast = build_tree_list (build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_METHOD_LIST))), NULLT);
- variable_length_type = groktypename (cast);
-
- chain = CLASS_CLS_METHODS (implementation_context);
- if (chain)
- {
- size = 0;
- initlist = build_dispatch_table_initializer (chain, &size);
-
- method_list_template = build_method_list_template (objc_method_template,
- size);
- if (TREE_CODE (implementation_context) == CLASS_IMPLEMENTATION)
- _OBJC_CLASS_METHODS_decl =
- generate_dispatch_table (method_list_template,
- "_OBJC_CLASS_METHODS",
- size, initlist);
- else
- /* we have a category */
- _OBJC_CLASS_METHODS_decl =
- generate_dispatch_table (method_list_template,
- "_OBJC_CATEGORY_CLASS_METHODS",
- size, initlist);
- /* cast! */
- TREE_TYPE (_OBJC_CLASS_METHODS_decl) = variable_length_type;
- }
- else
- _OBJC_CLASS_METHODS_decl = 0;
-
- chain = CLASS_NST_METHODS (implementation_context);
- if (chain)
- {
- size = 0;
- initlist = build_dispatch_table_initializer (chain, &size);
-
- method_list_template = build_method_list_template (objc_method_template,
- size);
- if (TREE_CODE (implementation_context) == CLASS_IMPLEMENTATION)
- _OBJC_INSTANCE_METHODS_decl =
- generate_dispatch_table (method_list_template,
- "_OBJC_INSTANCE_METHODS",
- size, initlist);
- else
- /* we have a category */
- _OBJC_INSTANCE_METHODS_decl =
- generate_dispatch_table (method_list_template,
- "_OBJC_CATEGORY_INSTANCE_METHODS",
- size, initlist);
- /* cast! */
- TREE_TYPE (_OBJC_INSTANCE_METHODS_decl) = variable_length_type;
- }
- else
- _OBJC_INSTANCE_METHODS_decl = 0;
- }
-
- static tree
- generate_protocol_list(i_or_p)
- tree i_or_p;
- {
- static tree cast_type = 0;
- tree initlist, decl_specs, sc_spec;
- tree refs_decl, expr_decl, lproto, e, plist;
- int size = 0;
-
- if (TREE_CODE(i_or_p) == CLASS_INTERFACE
- || TREE_CODE(i_or_p) == CATEGORY_INTERFACE)
- plist = CLASS_PROTOCOL_LIST(i_or_p);
- else if (TREE_CODE(i_or_p) == PROTOCOL_INTERFACE)
- plist = PROTOCOL_LIST(i_or_p);
-
- if (!cast_type)
- cast_type = groktypename (build_tree_list (
- build_tree_list (NULLT,
- xref_tag (RECORD_TYPE,
- get_identifier (_TAG_PROTOCOL))),
- build1 (INDIRECT_REF, NULLT, NULLT)));
-
- /* compute size */
- for (lproto = plist; lproto; lproto = TREE_CHAIN(lproto))
- if ((TREE_CODE(TREE_VALUE(lproto)) == PROTOCOL_INTERFACE) &&
- PROTOCOL_FORWARD_DECL(TREE_VALUE(lproto))) {
- size++;
- }
-
- /* build initializer */
- initlist = tree_cons (NULLT, build_int_2 (0, 0), NULLT);
-
- e = build_int_2 (size, 0);
- TREE_TYPE (e) = cast_type;
- initlist = tree_cons (NULLT, e, initlist);
-
- for (lproto = plist; lproto; lproto = TREE_CHAIN(lproto))
- {
- int offset;
- tree pval = TREE_VALUE(lproto);
-
- if ((TREE_CODE(pval) == PROTOCOL_INTERFACE) &&
- PROTOCOL_FORWARD_DECL(pval))
- {
- e = build_unary_op (ADDR_EXPR, PROTOCOL_FORWARD_DECL(pval), 0);
- initlist = tree_cons (NULLT, e, initlist);
- }
- }
-
- /* static struct objc_protocol *refs[n]; */
-
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_STATIC], NULLT);
- decl_specs = tree_cons (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_PROTOCOL)), sc_spec);
-
- if (TREE_CODE(i_or_p) == PROTOCOL_INTERFACE)
- expr_decl = build_nt (ARRAY_REF,
- synth_id_with_class_suffix ("_OBJC_PROTOCOL_REFS", i_or_p),
- build_int_2 (size+2, 0));
- else if (TREE_CODE(i_or_p) == CLASS_INTERFACE)
- expr_decl = build_nt (ARRAY_REF,
- synth_id_with_class_suffix ("_OBJC_CLASS_PROTOCOLS", i_or_p),
- build_int_2 (size+2, 0));
- else if (TREE_CODE(i_or_p) == CATEGORY_INTERFACE)
- expr_decl = build_nt (ARRAY_REF,
- synth_id_with_class_suffix ("_OBJC_CATEGORY_PROTOCOLS", i_or_p),
- build_int_2 (size+2, 0));
-
- expr_decl = build1 (INDIRECT_REF, NULLT, expr_decl);
-
- refs_decl = start_decl (expr_decl, decl_specs, 1);
-
- finish_decl (refs_decl, build_nt (CONSTRUCTOR, NULLT,
- nreverse (initlist)), NULLT);
-
- return refs_decl;
- }
-
- static tree
- build_category_initializer (cat_name, class_name,
- instance_methods, class_methods, protocol_list)
- tree cat_name;
- tree class_name;
- tree instance_methods;
- tree class_methods;
- tree protocol_list;
- {
- tree initlist = NULLT, expr;
-
- initlist = tree_cons (NULLT, cat_name, initlist);
- initlist = tree_cons (NULLT, class_name, initlist);
-
- if (!instance_methods)
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
- else
- {
- expr = build_unary_op (ADDR_EXPR, instance_methods, 0);
- initlist = tree_cons (NULLT, expr, initlist);
- }
- if (!class_methods)
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
- else
- {
- expr = build_unary_op (ADDR_EXPR, class_methods, 0);
- initlist = tree_cons (NULLT, expr, initlist);
- }
-
- /* protocol_list = */
- if (!protocol_list)
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
- else
- {
- static tree cast_type2;
-
- if (!cast_type2)
- cast_type2 = groktypename (build_tree_list(
- build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_PROTOCOL))),
- build1 (INDIRECT_REF, NULLT,
- build1 (INDIRECT_REF, NULLT, NULLT))));
-
- expr = build_unary_op (ADDR_EXPR, protocol_list, 0);
- TREE_TYPE(expr) = cast_type2;
- initlist = tree_cons (NULLT, expr, initlist);
- }
-
- return build_nt (CONSTRUCTOR, NULLT, nreverse (initlist));
- }
-
- /*
- * struct objc_class {
- * struct objc_class *isa;
- * struct objc_class *super_class;
- * char *name;
- * long version;
- * long info;
- * long instance_size;
- * struct objc_ivar_list *ivars;
- * struct objc_method_list *methods;
- * struct objc_cache *cache;
- * struct objc_protocol_list *protocols;
- * };
- */
- static tree
- build_shared_structure_initializer (isa, super, name, size, status,
- dispatch_table, ivar_list, protocol_list)
- tree isa;
- tree super;
- tree name;
- tree size;
- int status;
- tree dispatch_table;
- tree ivar_list;
- tree protocol_list;
- {
- tree initlist = NULLT, expr;
-
- /* isa = */
- initlist = tree_cons (NULLT, isa, initlist);
-
- /* super_class = */
- initlist = tree_cons (NULLT, super, initlist);
-
- /* name = */
- initlist = tree_cons (NULLT, name, initlist);
-
- /* version = */
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
-
- /* info = */
- initlist = tree_cons (NULLT, build_int_2 (status), initlist);
-
- /* instance_size = */
- initlist = tree_cons (NULLT, size, initlist);
-
- /* objc_ivar_list = */
- if (!ivar_list)
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
- else
- {
- expr = build_unary_op (ADDR_EXPR, ivar_list, 0);
- initlist = tree_cons (NULLT, expr, initlist);
- }
-
- /* objc_method_list = */
- if (!dispatch_table)
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
- else
- {
- expr = build_unary_op (ADDR_EXPR, dispatch_table, 0);
- initlist = tree_cons (NULLT, expr, initlist);
- }
-
- /* method_cache = */
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
-
- /* protocol_list = */
- if (!protocol_list)
- initlist = tree_cons (NULLT, build_int_2 (0, 0), initlist);
- else
- {
- static tree cast_type2;
-
- if (!cast_type2)
- cast_type2 = groktypename (build_tree_list(
- build_tree_list (NULLT, xref_tag (RECORD_TYPE,
- get_identifier (_TAG_PROTOCOL))),
- build1 (INDIRECT_REF, NULLT,
- build1 (INDIRECT_REF, NULLT, NULLT))));
-
- expr = build_unary_op (ADDR_EXPR, protocol_list, 0);
- TREE_TYPE(expr) = cast_type2;
- initlist = tree_cons (NULLT, expr, initlist);
- }
-
- return build_nt (CONSTRUCTOR, NULLT, nreverse (initlist));
- }
-
- /*
- * static struct objc_category _OBJC_CATEGORY_<name> = { ... };
- */
- static void
- generate_category (cat)
- tree cat;
- {
- tree sc_spec, decl_specs, decl;
- tree initlist, cat_name_expr, class_name_expr;
- tree protocol_decl, category;
-
- cat_name_expr = add_objc_string (CLASS_SUPER_NAME (cat), class_names);
-
- add_class_reference (CLASS_NAME (cat));
- class_name_expr = add_objc_string (CLASS_NAME (cat), class_names);
-
- category = CLASS_CATEGORY_LIST (implementation_template);
-
- /* find the category interface from the class it is associated with */
- while (category)
- {
- if (CLASS_SUPER_NAME (cat) == CLASS_SUPER_NAME (category))
- break;
- category = CLASS_CATEGORY_LIST (category);
- }
-
- if (category && CLASS_PROTOCOL_LIST (category))
- {
- generate_protocol_references (CLASS_PROTOCOL_LIST (category));
- protocol_decl = generate_protocol_list (category);
- }
- else
- protocol_decl = 0;
-
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_STATIC], NULLT);
- decl_specs = tree_cons (NULLT, objc_category_template, sc_spec);
-
- decl = start_decl (
- synth_id_with_class_suffix ("_OBJC_CATEGORY", implementation_context),
- decl_specs, 1);
-
- initlist = build_category_initializer (
- cat_name_expr, class_name_expr,
- _OBJC_INSTANCE_METHODS_decl,
- _OBJC_CLASS_METHODS_decl,
- protocol_decl);
-
- finish_decl (decl, initlist, NULLT);
- }
-
- /*
- * static struct objc_class _OBJC_METACLASS_Foo={ ... };
- * static struct objc_class _OBJC_CLASS_Foo={ ... };
- */
- static void
- generate_shared_structures ()
- {
- tree sc_spec, decl_specs, expr_decl, decl;
- tree name_expr, super_expr, root_expr;
- tree my_root_id = NULLT, my_super_id = NULLT;
- tree cast_type, initlist, protocol_decl;
- int offset;
-
- my_super_id = CLASS_SUPER_NAME (implementation_template);
- if (my_super_id)
- {
- add_class_reference (my_super_id);
-
- /* compute "my_root_id" - this is required for code generation.
- * the "isa" for all meta class structures points to the root of
- * the inheritance hierarchy (e.g. "__Object")...
- */
- my_root_id = my_super_id;
- do
- {
- tree my_root_int = lookup_interface (my_root_id);
-
- if (my_root_int && CLASS_SUPER_NAME (my_root_int))
- my_root_id = CLASS_SUPER_NAME (my_root_int);
- else
- break;
- }
- while (1);
- }
- else /* no super class */
- {
- my_root_id = CLASS_NAME (implementation_template);
- }
-
- cast_type = groktypename (build_tree_list (build_tree_list (NULLT,
- objc_class_template), build1 (INDIRECT_REF, NULLT, NULLT)));
-
- name_expr = add_objc_string (CLASS_NAME (implementation_template), class_names);
-
- /* install class `isa' and `super' pointers at runtime */
- if (my_super_id)
- {
- super_expr = add_objc_string (my_super_id, class_names);
- super_expr = build_c_cast (cast_type, super_expr); /* cast! */
- }
- else
- super_expr = build_int_2 (0, 0);
-
- root_expr = add_objc_string (my_root_id, class_names);
- root_expr = build_c_cast (cast_type, root_expr); /* cast! */
-
- if (CLASS_PROTOCOL_LIST(implementation_template)) {
- generate_protocol_references(CLASS_PROTOCOL_LIST(implementation_template));
- protocol_decl = generate_protocol_list (implementation_template);
- } else
- protocol_decl = 0;
-
- /* static struct objc_class _OBJC_METACLASS_Foo = { ... }; */
-
- sc_spec = build_tree_list (NULLT, ridpointers[(int) RID_STATIC]);
- // sc_spec = tree_cons (NULLT, ridpointers[(int) RID_CONST], sc_spec);
- decl_specs = tree_cons (NULLT, objc_class_template, sc_spec);
-
- decl = start_decl (DECL_NAME (_OBJC_METACLASS_decl), decl_specs, 1);
-
- initlist = build_shared_structure_initializer (root_expr, super_expr, name_expr,
- build_int_2 (TREE_INT_CST_LOW (TYPE_SIZE (objc_class_template)) / BITS_PER_UNIT, 0),
- 2 /*CLS_META*/,
- _OBJC_CLASS_METHODS_decl,
- _OBJC_CLASS_VARIABLES_decl,
- protocol_decl);
- finish_decl (decl, initlist, NULLT);
-
- /* static struct objc_class _OBJC_CLASS_Foo={ ... }; */
-
- decl = start_decl (DECL_NAME (_OBJC_CLASS_decl), decl_specs, 1);
-
- initlist = build_shared_structure_initializer (
- build_unary_op (ADDR_EXPR, _OBJC_METACLASS_decl, 0),
- super_expr, name_expr,
- build_int_2 (TREE_INT_CST_LOW (TYPE_SIZE (CLASS_STATIC_TEMPLATE (implementation_template))) / BITS_PER_UNIT, 0),
- 1 /*CLS_FACTORY*/,
- _OBJC_INSTANCE_METHODS_decl,
- _OBJC_INSTANCE_VARIABLES_decl,
- protocol_decl);
-
- finish_decl (decl, initlist, NULLT);
- }
-
- static tree
- synth_id_with_class_suffix (preamble, ctxt)
- char *preamble;
- tree ctxt;
- {
- if (TREE_CODE (ctxt) == CLASS_IMPLEMENTATION ||
- TREE_CODE (ctxt) == CLASS_INTERFACE)
- sprintf (utlbuf, "%s_%s", preamble,
- IDENTIFIER_POINTER (CLASS_NAME (ctxt)));
-
- else if (TREE_CODE (ctxt) == CATEGORY_IMPLEMENTATION ||
- TREE_CODE (ctxt) == CATEGORY_INTERFACE)
- sprintf (utlbuf, "%s_%s_%s", preamble,
- IDENTIFIER_POINTER (CLASS_NAME (ctxt)),
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (ctxt)));
-
- else if (TREE_CODE (ctxt) == PROTOCOL_INTERFACE)
- sprintf (utlbuf, "%s_%s", preamble,
- IDENTIFIER_POINTER (PROTOCOL_NAME (ctxt)));
-
- return get_identifier (utlbuf);
- }
-
- static int
- is_objc_type_qualifier (node)
- tree node;
- {
- return (TREE_CODE (node) == IDENTIFIER_NODE
- && (node == ridpointers [(int) RID_CONST]
- || node == ridpointers [(int) RID_VOLATILE]
- || node == ridpointers [(int) RID_IN]
- || node == ridpointers [(int) RID_OUT]
- || node == ridpointers [(int) RID_INOUT]
- || node == ridpointers [(int) RID_BYCOPY]
- || node == ridpointers [(int) RID_ONEWAY]));
- }
-
- /* If type is empty or only type qualifiers are present, add default
- type of id (otherwise grokdeclarator will default to int). */
-
- static tree
- adjust_type_for_id_default (type)
- tree type;
- {
- tree declspecs, chain;
- int type_spec_seen = 0;
-
- if (!type)
- return build_tree_list (build_tree_list (NULLT, objc_object_reference),
- build1 (INDIRECT_REF, NULLT, NULLT));
-
- declspecs = TREE_PURPOSE (type);
-
- /* Determine if a typespec is present. */
- for (chain = declspecs;
- chain;
- chain = TREE_CHAIN (chain))
- {
- if (!is_objc_type_qualifier (TREE_VALUE (chain)))
- return type;
- }
-
- return build_tree_list (tree_cons (NULLT, objc_object_reference, declspecs),
- build1 (INDIRECT_REF, NULLT, NULLT));
- }
-
- /*
- * usage:
- * keyworddecl:
- * selector ':' '(' typename ')' identifier
- *
- * purpose:
- * transform an Objective-C keyword argument into
- * the C equivalent parameter declarator.
- *
- * in: key_name, an "identifier_node" (optional).
- * arg_type, a "tree_list" (optional).
- * arg_name, an "identifier_node".
- *
- * note: it would be really nice to strongly type the preceding
- * arguments in the function prototype; however, then i
- * could not use the "accessor" macros defined in "tree.h".
- *
- * out: an instance of "keyword_decl".
- *
- */
-
- tree
- build_keyword_decl (key_name, arg_type, arg_name)
- tree key_name;
- tree arg_type;
- tree arg_name;
- {
- tree keyword_decl;
-
- /* if no type is specified, default to "id" */
- arg_type = adjust_type_for_id_default (arg_type);
-
- keyword_decl = make_node (KEYWORD_DECL);
-
- TREE_TYPE (keyword_decl) = arg_type;
- KEYWORD_ARG_NAME (keyword_decl) = arg_name;
- KEYWORD_KEY_NAME (keyword_decl) = key_name;
-
- return keyword_decl;
- }
-
- /*
- * given a chain of keyword_decl's, synthesize the full keyword selector.
- */
- static tree
- build_keyword_selector (selector)
- tree selector;
- {
- int len = 0;
- tree key_chain, key_name;
- char *buf;
-
- for (key_chain = selector; key_chain; key_chain = TREE_CHAIN (key_chain))
- {
- if (TREE_CODE (selector) == KEYWORD_DECL)
- key_name = KEYWORD_KEY_NAME (key_chain);
- else if (TREE_CODE (selector) == TREE_LIST)
- key_name = TREE_PURPOSE (key_chain);
-
- if (key_name)
- len += IDENTIFIER_LENGTH (key_name) + 1;
- else /* just a ':' arg */
- len++;
- }
- buf = (char *)alloca (len + 1);
- bzero (buf, len + 1);
-
- for (key_chain = selector; key_chain; key_chain = TREE_CHAIN (key_chain))
- {
- if (TREE_CODE (selector) == KEYWORD_DECL)
- key_name = KEYWORD_KEY_NAME (key_chain);
- else if (TREE_CODE (selector) == TREE_LIST)
- key_name = TREE_PURPOSE (key_chain);
-
- if (key_name)
- strcat (buf, IDENTIFIER_POINTER (key_name));
- strcat (buf, ":");
- }
- return get_identifier (buf);
- }
-
- /* used for declarations and definitions */
-
- tree
- build_method_decl (code, ret_type, selector, add_args)
- enum tree_code code;
- tree ret_type;
- tree selector;
- tree add_args;
- {
- tree method_decl;
-
- /* if no type is specified, default to "id" */
- ret_type = adjust_type_for_id_default (ret_type);
-
- method_decl = make_node (code);
- TREE_TYPE (method_decl) = ret_type;
-
- METHOD_FILENAME(method_decl) = input_filename;
- METHOD_LINENUM(method_decl) = lineno;
-
- /*
- * if we have a keyword selector, create an identifier_node that
- * represents the full selector name (`:' included)...
- */
- if (TREE_CODE (selector) == KEYWORD_DECL)
- {
- METHOD_SEL_NAME (method_decl) = build_keyword_selector (selector);
- METHOD_SEL_ARGS (method_decl) = selector;
- METHOD_ADD_ARGS (method_decl) = add_args;
- }
- else
- {
- METHOD_SEL_NAME (method_decl) = selector;
- METHOD_SEL_ARGS (method_decl) = NULLT;
- METHOD_ADD_ARGS (method_decl) = NULLT;
- }
-
- return method_decl;
- }
-
- #define METHOD_DEF 0
- #define METHOD_REF 1
- /*
- * used by `build_message_expr ()' and `comp_method_types ()'.
- *
- * add_args is a tree_list node the following info on a parameter list:
- *
- * The TREE_PURPOSE is a chain of decls of those parms.
- * The TREE_VALUE is a list of structure, union and enum tags defined.
- * The TREE_CHAIN is a list of argument types to go in the FUNCTION_TYPE.
- * This tree_list node is later fed to `grokparms'.
- *
- * VOID_AT_END nonzero means append `void' to the end of the type-list.
- * Zero means the parmlist ended with an ellipsis so don't append `void'.
- */
- static tree
- get_arg_type_list (meth, context, superflag)
- tree meth;
- int context;
- int superflag;
- {
- tree arglist, akey;
-
- /* receiver type */
- if (superflag)
- arglist = build_tree_list (NULLT, super_type);
- else
- {
- if (context == METHOD_DEF)
- arglist = build_tree_list (NULLT, TREE_TYPE (self_decl));
- else
- arglist = build_tree_list (NULLT, id_type);
- }
-
- /* selector type - will eventually change to `int' */
- chainon (arglist, build_tree_list (NULLT, _selector_type));
-
- /* build a list of argument types */
- for (akey = METHOD_SEL_ARGS (meth); akey; akey = TREE_CHAIN (akey))
- {
- tree arg_decl = groktypename_in_parm_context (TREE_TYPE (akey));
- chainon (arglist, build_tree_list (NULLT, TREE_TYPE (arg_decl)));
- }
-
- if (METHOD_ADD_ARGS (meth) == (tree)1)
- /*
- * we have a `, ...' immediately following the selector,
- * finalize the arglist...simulate get_parm_info (0)
- */
- ;
- else if (METHOD_ADD_ARGS (meth))
- {
- /* we have a variable length selector */
- tree add_arg_list = TREE_CHAIN (METHOD_ADD_ARGS (meth));
- chainon (arglist, add_arg_list);
- }
- else
- /* Finalize the arglist...simulate get_parm_info (1). */
- #ifdef OBJCPLUS
- chainon (arglist, void_list_node);
- #else /* OBJCPLUS */
- chainon (arglist, build_tree_list (NULLT, void_type_node));
- #endif /* OBJCPLUS */
-
- return arglist;
- }
-
- static tree
- check_duplicates (hsh)
- hash hsh;
- {
- tree meth = NULLT;
-
- if (hsh)
- {
- meth = hsh->key;
-
- if (hsh->list)
- {
- /* we have two methods with the same name and different types */
- attr loop;
- char type;
-
- type = (TREE_CODE (meth) == INSTANCE_METHOD_DECL) ? '-' : '+';
-
- warning ("multiple declarations for method `%s'",
- IDENTIFIER_POINTER (METHOD_SEL_NAME (meth)));
-
- warn_with_method ("using", type, meth);
- for (loop = hsh->list; loop; loop = loop->next)
- warn_with_method ("also found", type, loop->value);
- }
- }
- return meth;
- }
-
- static tree
- receiver_is_class_object (receiver)
- tree receiver;
- {
- /* the receiver is a function call that returns an id...
- * ...check if it is a call to objc_getClass, if so, give it
- * special treatment.
- */
- tree exp = 0;
-
- if ((exp = TREE_OPERAND (receiver, 0)) && (TREE_CODE (exp) == ADDR_EXPR))
- {
- if ((exp = TREE_OPERAND (exp, 0)) &&
- (TREE_CODE (exp) == FUNCTION_DECL) && exp == objc_getClass_decl)
- {
- /* we have a call to objc_getClass! */
- tree arg = 0;
-
- if ((arg = TREE_OPERAND (receiver, 1)) &&
- (TREE_CODE (arg) == TREE_LIST) &&
- (arg = TREE_VALUE (arg)) &&
- (TREE_CODE (arg) == NOP_EXPR) &&
- (arg = TREE_OPERAND (arg, 0)) &&
- (TREE_CODE (arg) == ADDR_EXPR) &&
- (arg = TREE_OPERAND (arg, 0)) &&
- (TREE_CODE (arg) == STRING_CST))
- /* finally, we have the class name */
- return get_identifier (TREE_STRING_POINTER (arg));
- }
- }
- return 0;
- }
-
- /* If we are currently building a message expr, this holds
- the identifier of the selector of the message. This is
- used when printing warnings about argument mismatches. */
-
-
- static tree building_objc_message_expr = 0;
-
-
- tree
- maybe_building_objc_message_expr ()
- {
- return building_objc_message_expr;
- }
-
-
- /*
- * (*(<abstract_decl>(*)())_msg)(receiver, selTransTbl[n], ...);
- * (*(<abstract_decl>(*)())_msgSuper)(receiver, selTransTbl[n], ...);
- */
- tree
- build_message_expr (mess)
- tree mess;
- {
- tree receiver = TREE_PURPOSE (mess), rtype, sel_name;
- tree args = TREE_VALUE (mess);
- tree params = NULLT;
- tree meth = NULLT, message_decl;
- tree retval;
- int statically_typed = 0, statically_allocated = 0;
- tree class_ident = 0;
-
- if (!doing_objc_thang)
- objc_fatal ();
-
- if (TREE_CODE (receiver) == ERROR_MARK)
- return error_mark_node;
-
- /* determine receiver type */
- rtype = TREE_TYPE (receiver);
-
- if (rtype == super_type)
- message_decl = _msgSuper_decl;
- else
- {
- message_decl = _msg_decl;
-
- if (TREE_STATIC_TEMPLATE (rtype))
- statically_allocated = 1;
- else if (TREE_CODE (rtype) == POINTER_TYPE
- && TREE_STATIC_TEMPLATE (TREE_TYPE (rtype)))
- statically_typed = 1;
- /* classfix -smn */
- else if ((TREE_CODE (receiver) == CALL_EXPR) && (rtype == id_type) &&
- (class_ident = receiver_is_class_object (receiver)))
- ;
- else if ((TYPE_MAIN_VARIANT (rtype) != id_type)
- && (rtype != objc_class_type))
- {
- bzero (errbuf, BUFSIZE);
- error ("illegal receiver type `%s'",
- gen_declaration (rtype, errbuf));
- return error_mark_node;
- }
- }
-
- /* obtain the full selector name */
- if (TREE_CODE (args) == IDENTIFIER_NODE)
- /* a unary selector */
- sel_name = args;
- else if (TREE_CODE (args) == TREE_LIST)
- sel_name = build_keyword_selector (args);
-
- /* start building argument list - synthesizing the second argument */
- if (statically_allocated)
- params = build_tree_list (NULLT, build_unary_op (ADDR_EXPR, receiver, 0));
- else
- params = build_tree_list (NULLT, receiver);
-
- chainon (params, build_tree_list (NULLT,
- build_selector_reference (sel_name)));
- if (TREE_CODE (args) == TREE_LIST)
- {
- tree chain = args, prev = NULLT;
-
- /* we have a keyword selector - check for comma expressions */
- while (chain)
- {
- tree element = TREE_VALUE (chain);
-
- /* we have a comma expression, must collapse... */
- if (TREE_CODE (element) == TREE_LIST)
- {
- if (prev)
- TREE_CHAIN (prev) = element;
- else
- args = element;
- }
- prev = chain;
- chain = TREE_CHAIN (chain);
- }
- /* attach the rest of the argument list */
- chainon (params, args);
- }
-
- /* determine return type */
-
- if (rtype == super_type)
- {
- tree iface;
-
- if (CLASS_SUPER_NAME (implementation_template))
- {
- iface = lookup_interface (CLASS_SUPER_NAME (implementation_template));
-
- if (TREE_CODE (method_context) == INSTANCE_METHOD_DECL)
- meth = lookup_instance_method_static (iface, sel_name);
- else
- meth = lookup_class_method_static (iface, sel_name);
-
- if (iface && !meth)
- {
- warning ("`%s' does not respond to `%s'",
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (implementation_template)),
- IDENTIFIER_POINTER (sel_name));
- }
- }
- else
- {
- error ("no super class declared in interface for `%s'",
- IDENTIFIER_POINTER (CLASS_NAME (implementation_template)));
- return error_mark_node;
- }
-
- }
- else if (statically_typed || statically_allocated)
- {
- tree ctype;
-
- if (statically_allocated)
- ctype = rtype;
- if (statically_typed)
- ctype = TREE_TYPE (rtype);
-
- /* `self' is now statically_typed...all methods should be visible
- * within the context of the implementation...
- */
- if ((implementation_context
- && CLASS_NAME (implementation_context) == TYPE_NAME (ctype)))
- {
- meth = lookup_instance_method_static (implementation_template, sel_name);
-
- /* NEW!!! */
- if (!meth && TYPE_PROTOCOL_LIST (ctype))
- meth = lookup_method_in_protocol_list (
- TYPE_PROTOCOL_LIST (ctype), sel_name, 0);
-
- if (!meth && (implementation_template != implementation_context))
- /* the method is not published in the interface...check locally */
- meth = lookup_method (CLASS_NST_METHODS (implementation_context),
- sel_name);
- }
- else
- {
- tree iface = lookup_interface (TYPE_NAME (ctype));
-
- if (iface)
- meth = lookup_instance_method_static (iface, sel_name);
- else
- error ("Cannot find interface declaration for `%s'",
- IDENTIFIER_POINTER (TYPE_NAME (ctype)));
-
- if (!meth && TYPE_PROTOCOL_LIST (ctype))
- meth = lookup_method_in_protocol_list (
- TYPE_PROTOCOL_LIST (ctype), sel_name, 0);
- }
-
- if (!meth)
- warning ("`%s' does not respond to `%s'",
- IDENTIFIER_POINTER (TYPE_NAME (ctype)),
- IDENTIFIER_POINTER (sel_name));
- }
- else if (class_ident)
- {
- if ((implementation_context &&
- CLASS_NAME (implementation_context) == class_ident))
- {
- meth = lookup_class_method_static (implementation_template,
- sel_name);
-
- if (!meth && (implementation_template != implementation_context))
- /* the method is not published in the interface...check locally */
- meth = lookup_method (CLASS_CLS_METHODS (implementation_context),
- sel_name);
- }
- else
- {
- tree iface;
-
- if (iface = lookup_interface (class_ident))
- meth = lookup_class_method_static (iface, sel_name);
- }
-
- if (!meth)
- {
- warning ("cannot find class (factory) method.");
- warning ("return type for `%s' defaults to id",
- IDENTIFIER_POINTER (sel_name));
- }
- }
- else if (rtype != id_type && TYPE_MAIN_VARIANT (rtype) == id_type)
- {
- /* An anonymous object that has been qualified with a protocol. */
-
- tree protocol_list = TYPE_PROTOCOL_LIST (rtype);
-
- meth = lookup_method_in_protocol_list (protocol_list, sel_name, 0);
-
- if (!meth)
- {
- hash hsh;
-
- warning ("method `%s' not implemented by protocol.",
- IDENTIFIER_POINTER (sel_name));
-
- /* try and find the method signiture in the global pools! */
-
- if (!(hsh = hash_lookup (nst_method_hash_list, sel_name)))
- hsh = hash_lookup (cls_method_hash_list, sel_name);
-
- if (!(meth = check_duplicates (hsh)))
- warning ("return type defaults to id");
- }
- }
- else
- {
- hash hsh;
-
- /* we think we have an instance...loophole: extern id Object; */
- if (!(hsh = hash_lookup (nst_method_hash_list, sel_name)))
- {
- /* for various loopholes...like sending messages to self in a
- * factory context...
- */
- hsh = hash_lookup (cls_method_hash_list, sel_name);
- }
- if (!(meth = check_duplicates (hsh)))
- {
- warning ("cannot find method.");
- warning ("return type for `%s' defaults to id",
- IDENTIFIER_POINTER (sel_name));
- }
- }
-
- building_objc_message_expr = sel_name;
-
- if (!meth)
- {
- retval = build_function_call (message_decl, params);
- }
- else /* we have a method prototype */
- {
- tree arglist = NULLT;
- tree savret, savarg;
-
- arglist = get_arg_type_list (meth, METHOD_REF, message_decl == _msgSuper_decl);
-
- /* install argument types - normally set by "build_function_type ()". */
- savarg = TYPE_ARG_TYPES (TREE_TYPE (message_decl));
- TYPE_ARG_TYPES (TREE_TYPE (message_decl)) = arglist;
-
- /* install return type - "message_decl" is a function returning ret_type. */
- savret = TREE_TYPE (TREE_TYPE (message_decl));
- TREE_TYPE (TREE_TYPE (message_decl)) = groktypename (TREE_TYPE (meth));
-
- #ifdef OBJCPLUS
- DECL_PRINT_NAME (message_decl) = 0;
- #endif /* OBJCPLUS */
-
- /* check argments types supplied vs. ones in method prototype.
- * build_function_call () calls convert_arguments () to do the
- * type checking
- */
- retval = build_function_call (message_decl, params);
-
- /* restore previous return/argument types */
- TYPE_ARG_TYPES (TREE_TYPE (message_decl)) = savarg;
- TREE_TYPE (TREE_TYPE (message_decl)) = savret;
- }
-
- building_objc_message_expr = 0;
-
- return retval;
- }
-
- static void
- build_protocol_reference (p)
- tree p;
- {
- tree ref, decl, ident, ptype;
- struct obstack *save_current_obstack = current_obstack;
- struct obstack *save_rtl_obstack = rtl_obstack;
-
- rtl_obstack = current_obstack = &permanent_obstack;
-
- /* extern struct objc_protocol _OBJC_PROTOCOL_<mumble>; */
-
- ident = synth_id_with_class_suffix ("_OBJC_PROTOCOL", p);
- ptype = groktypename (build_tree_list(
- build_tree_list(NULLT, objc_protocol_template), NULLT));
-
- if (IDENTIFIER_GLOBAL_VALUE (ident))
- decl = IDENTIFIER_GLOBAL_VALUE (ident); /* set by pushdecl() */
- else
- {
- decl = build_decl (VAR_DECL, ident, ptype);
- TREE_EXTERNAL (decl) = 1;
- TREE_PUBLIC (decl) = 1;
- TREE_USED (decl) = 1;
-
- /* usually called from `rest_of_decl_compilation' */
- make_decl_rtl (decl, 0, 1);
- /* our `extended/custom' pushdecl in c-decl.c */
- pushdecl_top_level (decl);
- }
- current_obstack = save_current_obstack;
- rtl_obstack = save_rtl_obstack;
-
- PROTOCOL_FORWARD_DECL (p) = decl;
- }
-
- tree
- build_protocol_expr (protoname)
- tree protoname;
- {
- tree expr;
- tree p;
-
- if (!doing_objc_thang)
- objc_fatal ();
-
- p = lookup_protocol (protoname);
-
- if (!p) {
- error ("Cannot find protocol declaration for `%s'",
- IDENTIFIER_POINTER (protoname));
- return error_mark_node;
- }
-
- if (!PROTOCOL_FORWARD_DECL (p))
- build_protocol_reference(p);
-
- expr = build_unary_op (ADDR_EXPR, PROTOCOL_FORWARD_DECL (p), 0);
-
- TREE_TYPE(expr) = protocol_type;
-
- return expr;
- }
-
- tree
- build_selector_expr (selnamelist)
- tree selnamelist;
- {
- tree selname;
-
- if (!doing_objc_thang)
- objc_fatal ();
-
- /* obtain the full selector name */
- if (TREE_CODE (selnamelist) == IDENTIFIER_NODE)
- /* a unary selector */
- selname = selnamelist;
- else if (TREE_CODE (selnamelist) == TREE_LIST)
- selname = build_keyword_selector (selnamelist);
-
- return build_selector_reference (selname);
- }
-
- tree
- build_encode_expr (type)
- tree type;
- {
- if (!doing_objc_thang)
- objc_fatal ();
-
- if (!utlbuf)
- utlbuf = (char *)xmalloc (BUFSIZE);
- bzero (utlbuf, BUFSIZE);
-
- encode_type (type, utlbuf, utlbuf + strlen (utlbuf),
- OBJC_ENCODE_INLINE_DEFS);
-
- /* synthesize a string that represents the encoded struct/union */
- return my_build_string (strlen (utlbuf) + 1, utlbuf);
- }
-
- tree
- build_ivar_reference (id)
- tree id;
- {
- if (TREE_CODE (method_context) == CLASS_METHOD_DECL)
- TREE_TYPE (self_decl) = instance_type; /* cast */
-
- return build_component_ref (build_indirect_ref (self_decl, "->"), id);
- }
-
- #define HASH_ALLOC_LIST_SIZE 170
- #define ATTR_ALLOC_LIST_SIZE 170
- #define SIZEHASHTABLE 257
- #define HASHFUNCTION(key) ((int)key >> 2) /* divide by 4 */
-
- static void
- hash_init ()
- {
- nst_method_hash_list = (hash *)xmalloc (SIZEHASHTABLE * sizeof (hash));
- cls_method_hash_list = (hash *)xmalloc (SIZEHASHTABLE * sizeof (hash));
-
- if (!nst_method_hash_list || !cls_method_hash_list)
- perror ("unable to allocate space in objc-tree.c");
- else
- {
- int i;
-
- for (i = 0; i < SIZEHASHTABLE; i++)
- {
- nst_method_hash_list[i] = 0;
- cls_method_hash_list[i] = 0;
- }
- }
- }
-
- static void
- hash_enter (hashlist, method)
- hash *hashlist;
- tree method;
- {
- static hash hash_alloc_list = 0;
- static int hash_alloc_index = 0;
- hash obj;
- int slot = HASHFUNCTION (METHOD_SEL_NAME (method)) % SIZEHASHTABLE;
-
- if (!hash_alloc_list || hash_alloc_index >= HASH_ALLOC_LIST_SIZE)
- {
- hash_alloc_index = 0;
- hash_alloc_list = (hash)xmalloc (sizeof (struct hashedEntry) *
- HASH_ALLOC_LIST_SIZE);
- if (!hash_alloc_list)
- perror ("unable to allocate in objc-tree.c");
- }
- obj = &hash_alloc_list[hash_alloc_index++];
- obj->list = 0;
- obj->next = hashlist[slot];
- obj->key = method;
-
- hashlist[slot] = obj; /* append to front */
- }
-
- static hash
- hash_lookup (hashlist, sel_name)
- hash *hashlist;
- tree sel_name;
- {
- hash target;
-
- target = hashlist[HASHFUNCTION (sel_name) % SIZEHASHTABLE];
-
- while (target)
- {
- if (sel_name == METHOD_SEL_NAME (target->key))
- return target;
-
- target = target->next;
- }
- return 0;
- }
-
- static void
- hash_add_attr (entry, value)
- hash entry;
- tree value;
- {
- static attr attr_alloc_list = 0;
- static int attr_alloc_index = 0;
- attr obj;
-
- if (!attr_alloc_list || attr_alloc_index >= ATTR_ALLOC_LIST_SIZE)
- {
- attr_alloc_index = 0;
- attr_alloc_list = (attr)xmalloc (sizeof (struct hashedAttribute) *
- ATTR_ALLOC_LIST_SIZE);
- if (!attr_alloc_list)
- perror ("unable to allocate in objc-tree.c");
- }
- obj = &attr_alloc_list[attr_alloc_index++];
- obj->next = entry->list;
- obj->value = value;
-
- entry->list = obj; /* append to front */
- }
-
- static tree
- lookup_method (mchain, method)
- tree mchain;
- tree method;
- {
- tree key;
-
- if (TREE_CODE (method) == IDENTIFIER_NODE)
- key = method;
- else
- key = METHOD_SEL_NAME (method);
-
- while (mchain)
- {
- if (METHOD_SEL_NAME (mchain) == key)
- return mchain;
- mchain = TREE_CHAIN (mchain);
- }
- return NULLT;
- }
-
- static tree
- lookup_instance_method_static (interface, ident)
- tree interface;
- tree ident;
- {
- tree inter = interface;
- tree meth = NULLT;
-
- while (inter)
- {
- if (meth = lookup_method (CLASS_NST_METHODS (inter), ident))
- return meth;
-
- if (CLASS_CATEGORY_LIST (inter))
- {
- tree category = CLASS_CATEGORY_LIST (inter);
-
- while (category)
- {
- if (meth = lookup_method (CLASS_NST_METHODS (category), ident))
- return meth;
-
- /* NEW!!! */
- /* Check for instance methods in protocols in categories. */
- if (CLASS_PROTOCOL_LIST (category))
- {
- if (meth = lookup_method_in_protocol_list (
- CLASS_PROTOCOL_LIST (category), ident, 0))
- return meth;
- }
-
- category = CLASS_CATEGORY_LIST (category);
- }
- }
-
- if (CLASS_PROTOCOL_LIST (inter))
- {
- if (meth = lookup_method_in_protocol_list (
- CLASS_PROTOCOL_LIST (inter), ident, 0))
- return meth;
- }
-
- inter = lookup_interface (CLASS_SUPER_NAME (inter));
- }
-
- return meth;
- }
-
- static tree
- lookup_class_method_static (interface, ident)
- tree interface;
- tree ident;
- {
- tree inter = interface;
- tree meth = NULLT;
- tree root_inter = NULLT;
-
- while (inter)
- {
- if (meth = lookup_method (CLASS_CLS_METHODS (inter), ident))
- return meth;
-
- if (CLASS_CATEGORY_LIST (inter))
- {
- tree category = CLASS_CATEGORY_LIST (inter);
-
- while (category)
- {
- if (meth = lookup_method (CLASS_CLS_METHODS (category), ident))
- return meth;
-
- /* NEW!!! */
- /* Check for class methods in protocols in categories. */
- if (CLASS_PROTOCOL_LIST (category))
- {
- if (meth = lookup_method_in_protocol_list (
- CLASS_PROTOCOL_LIST (category), ident, 1))
- return meth;
- }
-
- category = CLASS_CATEGORY_LIST (category);
- }
- }
-
- /* NEW!!! */
- /* Check for class methods in protocols. */
- if (CLASS_PROTOCOL_LIST (inter))
- {
- if (meth = lookup_method_in_protocol_list (
- CLASS_PROTOCOL_LIST (inter), ident, 1))
- return meth;
- }
-
- root_inter = inter;
- inter = lookup_interface (CLASS_SUPER_NAME (inter));
- }
-
- /* NEW!!! */
- /* Simulate wrap around. */
- return lookup_instance_method_static (root_inter, ident);
- }
-
- tree
- add_class_method (class, method)
- tree class;
- tree method;
- {
- tree mth;
- hash hsh;
-
- if (!(mth = lookup_method (CLASS_CLS_METHODS (class), method)))
- {
- /* put method on list in reverse order */
- TREE_CHAIN (method) = CLASS_CLS_METHODS (class);
- CLASS_CLS_METHODS (class) = method;
- }
- else
- {
- if (TREE_CODE (class) == CLASS_IMPLEMENTATION)
- error ("duplicate definition of class method `%s'.",
- IDENTIFIER_POINTER (METHOD_SEL_NAME (mth)));
- else
- {
- /* check types, if different complain */
- if (!comp_proto_with_proto (method, mth))
- error ("duplicate declaration of class method `%s'.",
- IDENTIFIER_POINTER (METHOD_SEL_NAME (mth)));
- }
- }
-
- if (!(hsh = hash_lookup (cls_method_hash_list, METHOD_SEL_NAME (method))))
- {
- /* install on a global chain */
- hash_enter (cls_method_hash_list, method);
- }
- else
- {
- /* check types, if different add to a list */
- if (!comp_proto_with_proto (method, hsh->key))
- hash_add_attr (hsh, method);
- }
- return method;
- }
-
- tree
- add_instance_method (class, method)
- tree class;
- tree method;
- {
- tree mth;
- hash hsh;
-
- if (!(mth = lookup_method (CLASS_NST_METHODS (class), method)))
- {
- /* put method on list in reverse order */
- TREE_CHAIN (method) = CLASS_NST_METHODS (class);
- CLASS_NST_METHODS (class) = method;
- }
- else
- {
- if (TREE_CODE (class) == CLASS_IMPLEMENTATION)
- error ("duplicate definition of instance method `%s'.",
- IDENTIFIER_POINTER (METHOD_SEL_NAME (mth)));
- else
- {
- /* check types, if different complain */
- if (!comp_proto_with_proto (method, mth))
- error ("duplicate declaration of instance method `%s'.",
- IDENTIFIER_POINTER (METHOD_SEL_NAME (mth)));
- }
- }
-
- if (!(hsh = hash_lookup (nst_method_hash_list, METHOD_SEL_NAME (method))))
- {
- /* install on a global chain */
- hash_enter (nst_method_hash_list, method);
- }
- else
- {
- /* check types, if different add to a list */
- if (!comp_proto_with_proto (method, hsh->key))
- hash_add_attr (hsh, method);
- }
- return method;
- }
-
- static tree
- add_class (class)
- tree class;
- {
- /* put interfaces on list in reverse order */
- TREE_CHAIN (class) = interface_chain;
- interface_chain = class;
- return interface_chain;
- }
-
- static void
- add_category (class, category)
- tree class;
- tree category;
- {
- /* put categories on list in reverse order */
- CLASS_CATEGORY_LIST (category) = CLASS_CATEGORY_LIST (class);
- CLASS_CATEGORY_LIST (class) = category;
- }
-
- /* called after parsing each instance variable declaration. Necessary to
- * preserve typedefs and implement public/private...
- */
-
- /* PUBLIC is 1 for public, 0 for protected, and 2 for private. */
-
- tree
- add_instance_variable (class, public, declarator, declspecs, width)
- tree class;
- int public;
- tree declarator;
- tree declspecs;
- tree width;
- {
- tree field_decl, raw_decl;
-
- raw_decl = build_tree_list (declspecs /*purpose*/, declarator/*value*/);
-
- if (CLASS_RAW_IVARS (class))
- chainon (CLASS_RAW_IVARS (class), raw_decl);
- else
- CLASS_RAW_IVARS (class) = raw_decl;
-
- field_decl = grokfield (input_filename, lineno,
- declarator, declspecs, width);
-
- /* overload the public attribute, it is not used for FIELD_DECL's */
- switch (public)
- {
- case 0:
- TREE_PUBLIC (field_decl) = 0;
- TREE_PRIVATE (field_decl) = 0;
- TREE_PROTECTED (field_decl) = 1;
- break;
-
- case 1:
- TREE_PUBLIC (field_decl) = 1;
- TREE_PRIVATE (field_decl) = 0;
- TREE_PROTECTED (field_decl) = 0;
- break;
-
- case 2:
- TREE_PUBLIC (field_decl) = 0;
- TREE_PRIVATE (field_decl) = 1;
- TREE_PROTECTED (field_decl) = 0;
- break;
- }
-
- if (CLASS_IVARS (class))
- chainon (CLASS_IVARS (class), field_decl);
- else
- CLASS_IVARS (class) = field_decl;
-
- return class;
- }
-
- tree
- is_ivar (decl_chain, ident)
- tree decl_chain;
- tree ident;
- {
- for ( ; decl_chain; decl_chain = TREE_CHAIN (decl_chain))
- if (DECL_NAME (decl_chain) == ident)
- return decl_chain;
- return NULL_TREE;
- }
-
-
- /* True if the ivar is private and we are not in its implementation. */
-
- int
- is_private (decl)
- tree decl;
- {
- if (TREE_PRIVATE (decl)
- && ! is_ivar (CLASS_IVARS (implementation_template), DECL_NAME (decl)))
- {
- error ("instance variable `%s' is declared private",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- return 1;
- }
- else
- return 0;
- }
-
-
- /* we have an instance variable reference, check to see if it is public...*/
-
- int
- is_public (expr, identifier)
- tree expr;
- tree identifier;
- {
- tree basetype = TREE_TYPE (expr);
- enum tree_code code = TREE_CODE (basetype);
- tree decl;
-
- if (code == RECORD_TYPE)
- {
- if (TREE_STATIC_TEMPLATE (basetype))
- {
- if (!lookup_interface (TYPE_NAME (basetype)))
- {
- error ("Cannot find interface declaration for `%s'",
- IDENTIFIER_POINTER (TYPE_NAME (basetype)));
- return 0;
- }
-
- if (decl = is_ivar (TYPE_FIELDS (basetype), identifier))
- {
- if (TREE_PUBLIC (decl))
- return 1;
-
- /* important diffence between the Stepstone translator:
-
- all instance variables should be public within the context
- of the implementation...
- */
- if (implementation_context
- && (TREE_CODE (implementation_context) == CLASS_IMPLEMENTATION
- || TREE_CODE (implementation_context) == CATEGORY_IMPLEMENTATION)
- && CLASS_NAME (implementation_context) == TYPE_NAME (basetype))
- return (!is_private (decl));
-
- error ("instance variable `%s' is declared %s",
- IDENTIFIER_POINTER (identifier),
- TREE_PRIVATE (decl) ? "private" : "protected");
- return 0;
- }
- }
- else if (implementation_context && (basetype == objc_object_reference))
- {
- TREE_TYPE (expr) = _PRIVATE_record;
- warning ("static access to object of type `id'");
- warning ("please change to type `%s *'",
- IDENTIFIER_POINTER (CLASS_NAME (implementation_context)));
- }
- }
- return 1;
- }
-
- /* implement @defs (<classname>) within struct bodies. */
-
- tree
- get_class_ivars (interface)
- tree interface;
- {
- if (!doing_objc_thang)
- objc_fatal ();
-
- /* Make sure we copy the leaf ivars in case @defs is used in a local
- context. Otherwise finish_struct will overwrite the layout info
- using temporary storage. */
- return build_ivar_chain (interface, 1);
- }
-
- tree
- get_class_reference (ident)
- tree ident;
- {
- tree params;
- tree class_name_expr, initlist, constructor;
-
- add_class_reference (ident);
-
- #ifdef OBJC_CLASS_REFS
- /* = ((struct _objc_class_ref) {(id) "CLASSNAME"}) */
-
- class_name_expr = add_objc_string (ident, class_names);
- class_name_expr = build_c_cast (objc_class_type, class_name_expr);
-
- initlist = build_tree_list (NULLT, class_name_expr);
- constructor = build (CONSTRUCTOR, objc_class_ref_template, NULLT,
- nreverse (initlist));
- TREE_CONSTANT (constructor) = 1;
- TREE_STATIC (constructor) = 1;
-
- return build_component_ref (constructor, get_identifier ("class"));
- #else /* OBJC_CLASS_REFS */
- params = build_tree_list (NULLT,
- my_build_string (IDENTIFIER_LENGTH (ident) + 1,
- IDENTIFIER_POINTER (ident)));
-
- return build_function_call (objc_getClass_decl, params);
- #endif /* OBJC_CLASS_REFS */
- }
-
- /* make sure all entries in "chain" are also in "list" */
-
- static int
- check_methods (chain, list, mtype)
- tree chain;
- tree list;
- int mtype;
- {
- int first = 1;
-
- while (chain)
- {
- if (!lookup_method (list, chain))
- {
- if (first)
- {
- if (TREE_CODE (implementation_context) == CLASS_IMPLEMENTATION)
- warning ("incomplete implementation of class `%s'",
- IDENTIFIER_POINTER (CLASS_NAME (implementation_context)));
- else if (TREE_CODE (implementation_context) == CATEGORY_IMPLEMENTATION)
- warning ("incomplete implementation of category `%s'",
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (implementation_context)));
- first = 0;
- }
- warning ("method definition for `%c%s' not found",
- mtype, IDENTIFIER_POINTER (METHOD_SEL_NAME (chain)));
- }
- chain = TREE_CHAIN (chain);
- }
-
- return first;
- }
-
- tree
- start_class (code, class_name, super_name, protocol_list)
- enum tree_code code;
- tree class_name;
- tree super_name;
- tree protocol_list;
- {
- tree class, decl;
-
- if (!doing_objc_thang)
- objc_fatal ();
-
- class = make_node (code);
-
- CLASS_NAME (class) = class_name;
- CLASS_SUPER_NAME (class) = super_name;
- CLASS_CLS_METHODS (class) = NULL_TREE;
-
- if ((decl = lookup_name (class_name)) != 0)
- {
- error ("`%s' redeclared as different kind of symbol",
- IDENTIFIER_POINTER (class_name));
- error_with_decl (decl, "previous declaration of `%s'");
- }
-
- if (code == CLASS_IMPLEMENTATION)
- {
- /* pre-build the following entities - for speed/convenience. */
- if (!self_id)
- self_id = get_identifier ("self");
- if (!_cmd_id)
- _cmd_id = get_identifier ("_cmd");
-
- if (!objc_super_template)
- objc_super_template = build_super_template ();
-
- method_slot = 0; /* reset for multiple classes per file */
-
- implementation_context = class;
-
- /* lookup the interface for this implementation. */
-
- if (!(implementation_template = lookup_interface (class_name)))
- {
- warning ("Cannot find interface declaration for `%s'",
- IDENTIFIER_POINTER (class_name));
- add_class (implementation_template = implementation_context);
- }
-
- /* if a super class has been specified in the implementation,
- insure it conforms to the one specified in the interface */
-
- if (super_name
- && (super_name != CLASS_SUPER_NAME (implementation_template)))
- {
- error ("conflicting super class name `%s'",
- IDENTIFIER_POINTER (super_name));
- error ("previous declaration of `%s'",
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (implementation_template)));
- }
- }
- else if (code == CLASS_INTERFACE)
- {
- if (lookup_interface (class_name))
- warning ("duplicate interface declaration for class `%s'",
- IDENTIFIER_POINTER (class_name));
- else
- add_class (class);
-
- if (protocol_list)
- {
- lookup_and_install_protocols (protocol_list);
- CLASS_PROTOCOL_LIST (class) = protocol_list;
- }
- }
- else if (code == CATEGORY_INTERFACE)
- {
- tree class_category_is_assoc_with;
-
- /* for a category, class_name is really the name of the class that
- the following set of methods will be associated with...we must
- find the interface so that can derive the objects template */
-
- if (!(class_category_is_assoc_with = lookup_interface (class_name)))
- {
- error ("Cannot find interface declaration for `%s'",
- IDENTIFIER_POINTER (class_name));
- exit (1);
- }
- else
- add_category (class_category_is_assoc_with, class);
-
- if (protocol_list)
- {
- lookup_and_install_protocols (protocol_list);
- CLASS_PROTOCOL_LIST (class) = protocol_list;
- }
- }
- else if (code == CATEGORY_IMPLEMENTATION)
- {
- /* pre-build the following entities - for speed/convenience. */
- if (!self_id)
- self_id = get_identifier ("self");
- if (!_cmd_id)
- _cmd_id = get_identifier ("_cmd");
-
- if (!objc_super_template)
- objc_super_template = build_super_template ();
-
- method_slot = 0; /* reset for multiple classes per file */
-
- implementation_context = class;
-
- /* for a category, class_name is really the name of the class that
- the following set of methods will be associated with...we must
- find the interface so that can derive the objects template */
-
- if (!(implementation_template = lookup_interface (class_name)))
- {
- error ("Cannot find interface declaration for `%s'",
- IDENTIFIER_POINTER (class_name));
- exit (1);
- }
- }
- return class;
- }
-
- tree
- continue_class (class)
- tree class;
- {
- if (TREE_CODE (class) == CLASS_IMPLEMENTATION
- || TREE_CODE (class) == CATEGORY_IMPLEMENTATION)
- {
- struct imp_entry *impEntry;
- tree ivar_context;
-
- /* check consistency of the instance variables. */
-
- if (CLASS_IVARS (class))
- check_ivars (implementation_template, class);
-
- /* code generation */
-
- #ifdef OBJCPLUS
- push_lang_context (lang_name_c);
- #endif /* OBJCPLUS */
-
- ivar_context = build_private_template (implementation_template);
-
- if (!objc_class_template)
- build_class_template ();
-
- if (!(impEntry = (struct imp_entry *)xmalloc (sizeof (struct imp_entry))))
- perror ("unable to allocate in objc-tree.c");
-
- impEntry->next = imp_list;
- impEntry->imp_context = class;
- impEntry->imp_template = implementation_template;
-
- synth_forward_declarations ();
- impEntry->class_decl = _OBJC_CLASS_decl;
- impEntry->meta_decl = _OBJC_METACLASS_decl;
-
- /* append to front and increment count */
- imp_list = impEntry;
- if (TREE_CODE (class) == CLASS_IMPLEMENTATION)
- imp_count++;
- else
- cat_count++;
-
- #ifdef OBJCPLUS
- pop_lang_context ();
- #endif /* OBJCPLUS */
-
- return ivar_context;
- }
- else if (TREE_CODE (class) == CLASS_INTERFACE)
- {
- #ifdef OBJCPLUS
- tree record;
-
- push_lang_context (lang_name_c);
- record = start_struct (RECORD_TYPE, CLASS_NAME (class));
- #else /* OBJCPLUS */
- tree record = xref_tag (RECORD_TYPE, CLASS_NAME (class));
- #endif /* OBJCPLUS */
-
- if (!TYPE_FIELDS (record))
- {
- finish_struct (record, build_ivar_chain (class, 0));
- CLASS_STATIC_TEMPLATE (class) = record;
-
- /* mark this record as a class template - for static typing */
- TREE_STATIC_TEMPLATE (record) = 1;
- }
-
- #ifdef OBJCPLUS
- pop_lang_context ();
- #endif /* OBJCPLUS */
-
- return NULLT;
- }
- }
-
- /*
- * this is called once we see the "@end" in an interface/implementation.
- */
- tree
- finish_class (class)
- tree class;
- {
- if (TREE_CODE (class) == CLASS_IMPLEMENTATION)
- {
- /* all code generation is done in "finish_objc ()" */
-
- if (implementation_template != implementation_context)
- {
- /* Ensure that all methods listed in the interface have bodies! */
- check_methods (CLASS_CLS_METHODS (implementation_template),
- CLASS_CLS_METHODS (implementation_context), '+');
- check_methods (CLASS_NST_METHODS (implementation_template),
- CLASS_NST_METHODS (implementation_context), '-');
-
- if (CLASS_PROTOCOL_LIST (implementation_template))
- {
- tree proto;
-
- for (proto = CLASS_PROTOCOL_LIST (implementation_template);
- proto; proto = TREE_CHAIN (proto))
- {
- tree p = TREE_VALUE (proto);
-
- if (TREE_CODE (p) == PROTOCOL_INTERFACE)
- {
- int f1, f2;
-
- /* Ensure that all protocols have bodies! */
- f1 = check_methods (PROTOCOL_CLS_METHODS (p),
- CLASS_CLS_METHODS (implementation_context),
- '+');
- f2 = check_methods (PROTOCOL_NST_METHODS (p),
- CLASS_NST_METHODS (implementation_context),
- '-');
-
- if (!f1 || !f2)
- warning ("class `%s' does not fully implement the `%s' protocol",
- IDENTIFIER_POINTER (CLASS_NAME (implementation_context)),
- IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
-
- }
- else
- ; /* an identifier...if we could not find a protocol. */
- }
- }
- }
- }
- else if (TREE_CODE (class) == CATEGORY_IMPLEMENTATION)
- {
- tree category = CLASS_CATEGORY_LIST (implementation_template);
-
- /* find the category interface from the class it is associated with */
- while (category)
- {
- if (CLASS_SUPER_NAME (class) == CLASS_SUPER_NAME (category))
- break;
- category = CLASS_CATEGORY_LIST (category);
- }
-
- if (category)
- {
- /* ensure that all method listed in the interface contain bodies! */
- check_methods (CLASS_CLS_METHODS (category),
- CLASS_CLS_METHODS (implementation_context), '+');
- check_methods (CLASS_NST_METHODS (category),
- CLASS_NST_METHODS (implementation_context), '-');
-
- /* NEW!!! */
- if (CLASS_PROTOCOL_LIST (category))
- {
- tree proto;
-
- for (proto = CLASS_PROTOCOL_LIST (category);
- proto; proto = TREE_CHAIN (proto))
- {
- tree p = TREE_VALUE (proto);
-
- if (TREE_CODE (p) == PROTOCOL_INTERFACE)
- {
- int f1, f2;
-
- /* Ensure that all protocols have bodies! */
- f1 = check_methods (PROTOCOL_CLS_METHODS (p),
- CLASS_CLS_METHODS (implementation_context),
- '+');
- f2 = check_methods (PROTOCOL_NST_METHODS (p),
- CLASS_NST_METHODS (implementation_context),
- '-');
-
- if (!f1 || !f2)
- warning ("category `%s' does not fully implement the `%s' protocol",
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (implementation_context)),
- IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
-
- }
- else
- ; /* an identifier...if we could not find a protocol. */
- }
- }
- }
- }
- else if (TREE_CODE (class) == CLASS_INTERFACE)
- {
- tree decl_specs;
-
- /* extern struct objc_object *_<my_name>; */
-
- sprintf (utlbuf, "_%s", IDENTIFIER_POINTER (CLASS_NAME (class)));
-
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_EXTERN]);
- decl_specs = tree_cons (NULLT, objc_object_reference, decl_specs);
- define_decl (build1 (INDIRECT_REF, NULLT, get_identifier (utlbuf)), decl_specs);
- }
- }
-
- static tree
- add_protocol (protocol)
- tree protocol;
- {
- /* put protocol on list in reverse order */
- TREE_CHAIN (protocol) = protocol_chain;
- protocol_chain = protocol;
- return protocol_chain;
- }
-
- tree
- lookup_protocol (ident)
- tree ident;
- {
- tree chain;
-
- for (chain = protocol_chain; chain; chain = TREE_CHAIN (chain))
- {
- if (ident == PROTOCOL_NAME (chain))
- return chain;
- }
- return NULLT;
- }
-
- tree
- start_protocol (code, name, list)
- enum tree_code code;
- tree name;
- tree list;
- {
- tree protocol;
-
- if (!doing_objc_thang)
- objc_fatal ();
-
- /* this is as good a place as any...need a "push_tag_toplevel()" */
- if (!objc_protocol_template)
- objc_protocol_template = build_protocol_template ();
-
- protocol = make_node (code);
-
- PROTOCOL_NAME (protocol) = name;
- PROTOCOL_LIST (protocol) = list;
-
- lookup_and_install_protocols (list);
-
- if (lookup_protocol (name))
- warning ("duplicate declaration for protocol `%s'",
- IDENTIFIER_POINTER (name));
- else
- add_protocol (protocol);
-
- PROTOCOL_FORWARD_DECL (protocol) = NULL_TREE;
-
- return protocol;
- }
-
- void
- finish_protocol (protocol)
- tree protocol;
- {
- }
-
- static void
- encode_type_qualifiers (declspecs, utlbuf)
- tree declspecs;
- char *utlbuf;
- {
- tree spec;
-
- for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
- {
- if (ridpointers[RID_CONST] == TREE_VALUE (spec))
- strcat (utlbuf, "r");
- else if (ridpointers[RID_IN] == TREE_VALUE (spec))
- strcat (utlbuf, "n");
- else if (ridpointers[RID_INOUT] == TREE_VALUE (spec))
- strcat (utlbuf, "N");
- else if (ridpointers[RID_OUT] == TREE_VALUE (spec))
- strcat (utlbuf, "o");
- else if (ridpointers[RID_BYCOPY] == TREE_VALUE (spec))
- strcat (utlbuf, "O");
- else if (ridpointers[RID_ONEWAY] == TREE_VALUE (spec))
- strcat (utlbuf, "V");
- }
- }
-
- static void
- encode_pointer (type, str, curtype, format)
- tree type;
- char *str;
- char *curtype;
- int format;
- {
- tree pointer_to = TREE_TYPE (type);
-
- if (TREE_CODE (pointer_to) == RECORD_TYPE)
- {
- if (TYPE_NAME (pointer_to)
- && TREE_CODE (TYPE_NAME (pointer_to)) == IDENTIFIER_NODE)
- {
- char *name = IDENTIFIER_POINTER (TYPE_NAME (pointer_to));
-
- if ((strcmp (name, TAG_OBJECT) == 0) || /* '@' */
- (TREE_STATIC_TEMPLATE (pointer_to)))
- {
- strcat (str, "@");
- return;
- }
- else if (strcmp (name, TAG_CLASS) == 0) /* '#' */
- {
- strcat (str, "#");
- return;
- }
- #ifdef OBJC_SELS_R_STRUCT_PTRS
- else if (strcmp (name, TAG_SELECTOR) == 0) /* ':' */
- {
- strcat (str, ":");
- return;
- }
- #endif
- }
- }
- else if (TREE_CODE (pointer_to) == INTEGER_TYPE
- && TYPE_MODE (pointer_to) == QImode)
- {
- strcat (str, "*");
- return;
- }
-
- /* we have a type that does not get special treatment... */
-
- /* NeXT extension */
- strcat (str, "^");
- encode_type (pointer_to, str, curtype, format);
- }
-
- static void
- encode_array (type, str, curtype, format)
- tree type;
- char *str;
- char *curtype;
- int format;
- {
- tree anIntCst = TYPE_SIZE (type);
- tree array_of = TREE_TYPE (type);
-
- /* An incomplete array is treated like a pointer. */
- if (anIntCst == NULL)
- {
- /* split for obvious reasons. North-Keys 30 Mar 1991 */
- encode_pointer (type, str, curtype, format);
- return;
- }
-
- sprintf (str + strlen (str), "[%d",
- TREE_INT_CST_LOW (anIntCst)
- / TREE_INT_CST_LOW (TYPE_SIZE (array_of)));
- encode_type (array_of, str, curtype, format);
- strcat (str, "]");
- return;
- }
-
- static void
- encode_aggregate (type, str, curtype, format)
- tree type;
- char *str;
- char *curtype;
- int format;
- {
- enum tree_code code = TREE_CODE (type);
-
- switch (code)
- {
- case RECORD_TYPE:
- {
- if (strlen (curtype) && curtype[strlen (curtype) - 1] == '^')
- {
- tree name = TYPE_NAME (type);
-
- /* we have a reference - this is a NeXT extension */
-
- if ((strlen (curtype) == 1)
- && (format == OBJC_ENCODE_INLINE_DEFS))
- {
- /* output format of struct for first level only! */
-
- tree fields = TYPE_FIELDS (type);
-
- if (name && (TREE_CODE (name) == IDENTIFIER_NODE))
- sprintf (str + strlen (str), "{%s=",
- IDENTIFIER_POINTER (name));
- else
- strcat (str, "{?=");
-
- for ( ; fields; fields = TREE_CHAIN (fields))
- encode_field_decl (fields, str, curtype, format);
- strcat (str, "}");
- }
- else if (name && (TREE_CODE (name) == IDENTIFIER_NODE))
- sprintf (str + strlen (str), "{%s}",
- IDENTIFIER_POINTER (name));
- else /* we have an untagged structure or a typedef */
- sprintf (str + strlen (str), "{?}");
- }
- else
- {
- tree name = TYPE_NAME (type);
- tree fields = TYPE_FIELDS (type);
-
- if (format == OBJC_ENCODE_INLINE_DEFS)
- {
- if (name && (TREE_CODE (name) == IDENTIFIER_NODE))
- sprintf (str + strlen (str), "{%s=",
- IDENTIFIER_POINTER (name));
- else
- strcat (str, "{?=");
-
- for ( ; fields; fields = TREE_CHAIN (fields))
- encode_field_decl (fields, str, curtype, format);
- strcat (str, "}");
- }
- else
- {
- if (name && (TREE_CODE (name) == IDENTIFIER_NODE))
- sprintf (str + strlen (str), "{%s}",
- IDENTIFIER_POINTER (name));
- else /* we have an untagged structure or a typedef */
- sprintf (str + strlen (str), "{?}");
- }
- }
- break;
- }
- case UNION_TYPE:
- {
- if (str[strlen (str)-1] == '^')
- {
- if (TYPE_NAME (type)
- && (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE))
- /* we have a reference - this is a NeXT extension */
- sprintf (str + strlen (str), "(%s)",
- IDENTIFIER_POINTER (TYPE_NAME (type)));
- else /* we have an untagged structure */
- sprintf (str + strlen (str), "(?)");
- }
- else
- {
- tree fields = TYPE_FIELDS (type);
-
- if (format == OBJC_ENCODE_INLINE_DEFS)
- {
- strcat (str, "(");
- for ( ; fields; fields = TREE_CHAIN (fields))
- encode_field_decl (fields, str, curtype, format);
- strcat (str, ")");
- }
- else
- {
- if (TYPE_NAME (type) &&
- (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE))
- /* we have a reference - this is a NeXT extension */
- sprintf (str + strlen (str), "(%s)",
- IDENTIFIER_POINTER (TYPE_NAME (type)));
- else /* we have an untagged structure */
- sprintf (str + strlen (str), "(?)");
- }
- }
- break;
- }
- case ENUMERAL_TYPE:
- strcat (str, "i");
- break;
- }
- }
-
- /*
- * support bitfields, the current version of Objective-C does not support
- * them. the string will consist of one or more "b:n"'s where n is an
- * integer describing the width of the bitfield. Currently, classes in
- * the kit implement a method "-(char *)describeBitfieldStruct:" that
- * simulates this...if they do not implement this method, the archiver
- * assumes the bitfield is 16 bits wide (padded if necessary) and packed
- * according to the GNU compiler. After looking at the "kit", it appears
- * that all classes currently rely on this default behavior, rather than
- * hand generating this string (which is tedious).
- */
- static void
- encode_bitfield (width, str, format)
- int width;
- char *str;
- int format;
- {
- sprintf (str + strlen (str), "b%d", width);
- }
-
- /*
- * format will be:
- *
- * OBJC_ENCODE_INLINE_DEFS or OBJC_ENCODE_DONT_INLINE_DEFS
- */
- static void
- encode_type (type, str, curtype, format)
- tree type;
- char *str;
- char *curtype;
- int format;
- {
- enum tree_code code = TREE_CODE (type);
-
- if (code == INTEGER_TYPE)
- {
- if (TREE_INT_CST_LOW (TYPE_MIN_VALUE (type)) == 0)
- {
- /* unsigned integer types */
-
- if (TYPE_MODE (type) == QImode) /* 'C' */
- strcat (str, "C");
- else if (TYPE_MODE (type) == HImode) /* 'S' */
- strcat (str, "S");
- else if (TYPE_MODE (type) == SImode)
- {
- if (type == long_unsigned_type_node)
- strcat (str, "L"); /* 'L' */
- else
- strcat (str, "I"); /* 'I' */
- }
- }
- else /* signed integer types */
- {
- if (TYPE_MODE (type) == QImode) /* 'c' */
- strcat (str, "c");
- else if (TYPE_MODE (type) == HImode) /* 's' */
- strcat (str, "s");
- else if (TYPE_MODE (type) == SImode) /* 'i' */
- {
- if (type == long_integer_type_node)
- strcat (str, "l"); /* 'l' */
- else
- strcat (str, "i"); /* 'i' */
- }
- }
- }
- else if (code == REAL_TYPE)
- {
- /* floating point types */
-
- if (TYPE_MODE (type) == SFmode) /* 'f' */
- strcat (str, "f");
- else if (TYPE_MODE (type) == DFmode
- || TYPE_MODE (type) == TFmode) /* 'd' */
- strcat (str, "d");
- }
-
- else if (code == VOID_TYPE) /* 'v' */
- strcat (str, "v");
-
- else if (code == ARRAY_TYPE)
- encode_array (type, str, curtype, format);
-
- else if (code == POINTER_TYPE)
- encode_pointer (type, str, curtype, format);
-
- else if (code == RECORD_TYPE || code == UNION_TYPE || code == ENUMERAL_TYPE)
- encode_aggregate (type, str, curtype, format);
-
- else if (code == FUNCTION_TYPE) /* '?' */
- strcat (str, "?");
- }
-
- static void
- encode_field_decl (field_decl, str, curtype, format)
- tree field_decl;
- char *str;
- char *curtype;
- int format;
- {
- #ifdef OBJCPLUS
- if (TREE_PACKED(field_decl))
- encode_bitfield (DECL_SIZE_UNIT(field_decl), str, format);
- #else /* OBJCPLUS */
- if (DECL_BIT_FIELD (field_decl))
- encode_bitfield (DECL_FRAME_SIZE (field_decl), str, format);
- #endif /* OBJCPLUS */
- else
- encode_type (TREE_TYPE (field_decl), str, curtype, format);
- }
-
- static tree
- expr_last (complex_expr)
- tree complex_expr;
- {
- tree next;
-
- if (complex_expr)
- while (next = TREE_OPERAND (complex_expr, 0))
- complex_expr = next;
- return complex_expr;
- }
-
-
- /* The selector of the current method,
- or NULL if we aren't compiling a method. */
-
- tree
- maybe_objc_method_name (decl)
- tree decl;
- {
- if (method_context)
- return METHOD_SEL_NAME (method_context);
- else
- return 0;
- }
-
- /*
- * Transform a method definition into a function definition as follows:
- *
- * - synthesize the first two arguments, "self" and "_cmd".
- */
-
- void
- start_method_def (method)
- tree method;
- {
- tree decl_specs;
-
- /* required to implement _msgSuper () */
- method_context = method;
- _OBJC_SUPER_decl = NULLT;
-
- pushlevel (0); /* must be called BEFORE "start_function ()" */
-
- /* generate prototype declarations for arguments..."new-style" */
-
- if (TREE_CODE (method_context) == INSTANCE_METHOD_DECL)
- decl_specs = build_tree_list (NULLT, _PRIVATE_record);
- else
- /* really a `struct objc_class *'...however we allow people to
- assign to self...which changes its type midstream.
- */
- decl_specs = build_tree_list (NULLT, objc_object_reference);
-
- push_parm_decl (build_tree_list (decl_specs,
- build1 (INDIRECT_REF, NULLT, self_id)));
-
- #ifdef OBJC_SELS_R_INTS
- decl_specs = build_tree_list (NULLT, ridpointers[(int) RID_UNSIGNED]);
- decl_specs = tree_cons (NULLT, ridpointers[(int) RID_INT], decl_specs);
- push_parm_decl (build_tree_list (decl_specs, _cmd_id));
- #endif
-
- #ifdef OBJC_SELS_R_STRUCT_PTRS
- decl_specs = build_tree_list (NULLT,
- xref_tag (RECORD_TYPE,
- get_identifier (TAG_SELECTOR)));
- push_parm_decl (build_tree_list (decl_specs,
- build1 (INDIRECT_REF, NULLT, _cmd_id)));
- #endif
-
- /* generate argument delclarations if a keyword_decl */
- if (METHOD_SEL_ARGS (method))
- {
- tree arglist = METHOD_SEL_ARGS (method);
- do
- {
- tree arg_spec = TREE_PURPOSE (TREE_TYPE (arglist));
- tree arg_decl = TREE_VALUE (TREE_TYPE (arglist));
-
- if (arg_decl)
- {
- tree last_expr = expr_last (arg_decl);
-
- /* unite the abstract decl with its name */
- TREE_OPERAND (last_expr, 0) = KEYWORD_ARG_NAME (arglist);
- push_parm_decl (build_tree_list (arg_spec, arg_decl));
- #ifndef OBJCPLUS
- /* unhook...restore the abstract declarator */
- TREE_OPERAND (last_expr, 0) = NULLT;
- #endif /* not OBJCPLUS */
- }
- else
- push_parm_decl (build_tree_list (arg_spec, KEYWORD_ARG_NAME (arglist)));
-
- arglist = TREE_CHAIN (arglist);
- }
- while (arglist);
- }
-
- if (METHOD_ADD_ARGS (method) > (tree)1)
- {
- /* we have a variable length selector - in "prototype" format */
- tree akey = TREE_PURPOSE (METHOD_ADD_ARGS (method));
- while (akey)
- {
- /* this must be done prior to calling pushdecl (). pushdecl () is
- * going to change our chain on us...
- */
- tree nextkey = TREE_CHAIN (akey);
- pushdecl (akey);
- akey = nextkey;
- }
- }
- }
-
- static void
- error_with_method (message, mtype, method)
- char *message;
- char mtype;
- tree method;
- {
- extern int errorcount;
-
- #ifdef REPORT_EVENT
- bzero (errbuf, BUFSIZE);
- report_event (0, current_function_decl,
- METHOD_FILENAME (method), METHOD_LINENUM (method),
- "%s `%c%s'", message, mtype,
- gen_method_decl (method, errbuf));
- #endif
- fprintf (stderr, "%s:%d: ",
- METHOD_FILENAME (method), METHOD_LINENUM (method));
- bzero (errbuf, BUFSIZE);
- fprintf (stderr, "%s `%c%s'\n", message, mtype, gen_method_decl (method, errbuf));
- errorcount++;
- }
-
- static void
- warn_with_method (message, mtype, method)
- char *message;
- char mtype;
- tree method;
- {
- #ifdef REPORT_EVENT
- bzero (errbuf, BUFSIZE);
- report_event (1, current_function_decl,
- METHOD_FILENAME (method), METHOD_LINENUM (method),
- "%s `%c%s'", message, mtype,
- gen_method_decl (method, errbuf));
- #endif
- fprintf (stderr, "%s:%d: ",
- METHOD_FILENAME (method), METHOD_LINENUM (method));
- bzero (errbuf, BUFSIZE);
- fprintf (stderr, "%s `%c%s'\n", message, mtype, gen_method_decl (method, errbuf));
- }
-
- /* return 1 if `method' is consistent with `proto' */
-
- static int
- comp_method_with_proto (method, proto)
- tree method, proto;
- {
- static tree function_type = 0;
-
- /* create a function_type node once */
- if (!function_type)
- {
- struct obstack *ambient_obstack = current_obstack;
-
- current_obstack = &permanent_obstack;
- function_type = make_node (FUNCTION_TYPE);
- current_obstack = ambient_obstack;
- }
-
- /* install argument types - normally set by "build_function_type ()". */
- TYPE_ARG_TYPES (function_type) = get_arg_type_list (proto, METHOD_DEF, 0);
-
- /* install return type */
- TREE_TYPE (function_type) = groktypename (TREE_TYPE (proto));
-
- return comptypes (TREE_TYPE (METHOD_DEFINITION (method)), function_type);
- }
-
- /* return 1 if `proto1' is consistent with `proto2' */
-
- static int
- comp_proto_with_proto (proto1, proto2)
- tree proto1, proto2;
- {
- static tree function_type1 = 0, function_type2 = 0;
-
- /* create a couple function_type node's once */
- if (!function_type1)
- {
- struct obstack *ambient_obstack = current_obstack;
-
- current_obstack = &permanent_obstack;
- function_type1 = make_node (FUNCTION_TYPE);
- function_type2 = make_node (FUNCTION_TYPE);
- current_obstack = ambient_obstack;
- }
-
- /* install argument types - normally set by "build_function_type ()". */
- TYPE_ARG_TYPES (function_type1) = get_arg_type_list (proto1, METHOD_REF, 0);
- TYPE_ARG_TYPES (function_type2) = get_arg_type_list (proto2, METHOD_REF, 0);
-
- /* install return type */
- TREE_TYPE (function_type1) = groktypename (TREE_TYPE (proto1));
- TREE_TYPE (function_type2) = groktypename (TREE_TYPE (proto2));
-
- return comptypes (function_type1, function_type2);
- }
-
- /*
- * - generate an identifier for the function. the format is "_n_cls",
- * where 1 <= n <= nMethods, and cls is the name the implementation we
- * are processing.
- * - install the return type from the method declaration.
- * - if we have a prototype, check for type consistency.
- */
- static void
- really_start_method (method, parmlist)
- tree method, parmlist;
- {
- tree sc_spec, ret_spec, ret_decl, decl_specs;
- tree method_decl, method_id;
- char buf[256];
-
- /* synth the storage class & assemble the return type */
- sc_spec = tree_cons (NULLT, ridpointers[(int) RID_STATIC], NULLT);
- ret_spec = TREE_PURPOSE (TREE_TYPE (method));
- decl_specs = chainon (sc_spec, ret_spec);
-
- if (TREE_CODE (implementation_context) == CLASS_IMPLEMENTATION)
- #ifdef OBJC_GEN_METHOD_LABEL
- OBJC_GEN_METHOD_LABEL (buf,
- TREE_CODE (method) == INSTANCE_METHOD_DECL,
- IDENTIFIER_POINTER (CLASS_NAME (implementation_context)),
- NULL,
- IDENTIFIER_POINTER (METHOD_SEL_NAME (method)));
- #else
- sprintf (buf, "_%d_%s", ++method_slot,
- IDENTIFIER_POINTER (CLASS_NAME (implementation_context)));
- #endif
- else /* we have a category */
- #ifdef OBJC_GEN_METHOD_LABEL
- OBJC_GEN_METHOD_LABEL (buf,
- TREE_CODE (method) == INSTANCE_METHOD_DECL,
- IDENTIFIER_POINTER (CLASS_NAME (implementation_context)),
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (implementation_context)),
- IDENTIFIER_POINTER (METHOD_SEL_NAME (method)));
- #else
- sprintf (buf, "_%d_%s_%s", ++method_slot,
- IDENTIFIER_POINTER (CLASS_NAME (implementation_context)),
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (implementation_context)));
- #endif
-
- method_id = get_identifier (buf);
-
- method_decl = build_nt (CALL_EXPR, method_id, parmlist, NULLT);
-
- /* check the delclarator portion of the return type for the method */
- if (ret_decl = TREE_VALUE (TREE_TYPE (method)))
- {
- /*
- * unite the complex decl (specified in the abstract decl) with the
- * function decl just synthesized...(int *), (int (*)()), (int (*)[]).
- */
- tree save_expr = expr_last (ret_decl);
-
- TREE_OPERAND (save_expr, 0) = method_decl;
- method_decl = ret_decl;
- /* fool the parser into thinking it is starting a function */
- start_function (decl_specs, method_decl, 0);
- #ifdef OBJCPLUS
- /* must be called AFTER "start_function()" */
- store_parm_decls ();
- #endif /* OBJCPLUS */
- /* unhook...this has the effect of restoring the abstract declarator */
- TREE_OPERAND (save_expr, 0) = NULLT;
- }
- else
- {
- TREE_VALUE (TREE_TYPE (method)) = method_decl;
- /* fool the parser into thinking it is starting a function */
- start_function (decl_specs, method_decl, 0);
- #ifdef OBJCPLUS
- /* must be called AFTER "start_function()" */
- store_parm_decls ();
- #endif /* OBJCPLUS */
- /* unhook...this has the effect of restoring the abstract declarator */
- TREE_VALUE (TREE_TYPE (method)) = NULLT;
- }
-
- #ifdef OBJCPLUS
- /* set self_decl from the first argument...this global is used by
- * build_ivar_reference().build_indirect_ref().
- */
- self_decl = DECL_ARGUMENTS(current_function_decl);
- #endif /* OBJCPLUS */
-
- METHOD_DEFINITION (method) = current_function_decl;
-
- /* check consistency...start_function (), pushdecl (), duplicate_decls (). */
-
- if (implementation_template != implementation_context)
- {
- tree chain, proto;
-
- if (TREE_CODE (method) == INSTANCE_METHOD_DECL)
- proto = lookup_instance_method_static (implementation_template,
- METHOD_SEL_NAME (method));
- else
- proto = lookup_class_method_static (implementation_template,
- METHOD_SEL_NAME (method));
-
- if (proto)
- {
- if (!comp_method_with_proto (method, proto))
- {
- fprintf (stderr, "%s: In method `%s'\n", input_filename,
- IDENTIFIER_POINTER (METHOD_SEL_NAME (method)));
- if (TREE_CODE (method) == INSTANCE_METHOD_DECL)
- {
- warn_with_method ("conflicting types for", '-', method);
- warn_with_method ("previous declaration of", '-', proto);
- }
- else
- {
- warn_with_method ("conflicting types for", '+', method);
- warn_with_method ("previous declaration of", '+', proto);
- }
- }
- }
- }
- }
-
- /*
- * the following routine is always called...this "architecture" is to
- * accommodate "old-style" variable length selectors.
- *
- * - a:a b:b // prototype ; id c; id d; // old-style
- */
- void
- continue_method_def ()
- {
- tree parmlist;
-
- if (METHOD_ADD_ARGS (method_context) == (tree)1)
- /*
- * we have a `, ...' immediately following the selector.
- */
- parmlist = get_parm_info (0);
- else
- parmlist = get_parm_info (1); /* place a `void_at_end' */
-
- #ifndef OBJCPLUS
- /* set self_decl from the first argument...this global is used by
- * build_ivar_reference ().build_indirect_ref ().
- */
- self_decl = TREE_PURPOSE (parmlist);
- #endif /* not OBJCPLUS */
-
- poplevel (0, 0, 0); /* must be called BEFORE "start_function ()" */
-
- really_start_method (method_context, parmlist);
-
- #ifndef OBJCPLUS
- store_parm_decls (); /* must be called AFTER "start_function ()" */
- #endif /* not OBJCPLUS */
- }
-
- /* Called by the parser, from the `pushlevel' production. */
-
- void
- add_objc_decls ()
- {
- if (!_OBJC_SUPER_decl)
- {
- _OBJC_SUPER_decl = start_decl (get_identifier (_TAG_SUPER),
- build_tree_list (NULLT,
- objc_super_template),
- 0);
-
- finish_decl (_OBJC_SUPER_decl, NULLT, NULLT);
-
- /* this prevents `unused variable' warnings. */
- TREE_USED (_OBJC_SUPER_decl) = 1;
- }
- }
-
- /*
- * _n_Method (id self, SEL sel, ...)
- * {
- * struct objc_super _S;
- *
- * _msgSuper ((_S.self = self, _S.class = _cls, &_S), ...);
- * }
- */
- tree
- get_super_receiver ()
- {
- if (method_context)
- {
- tree super_expr, super_expr_list;
-
- /* set receiver to self */
- super_expr = build_component_ref (_OBJC_SUPER_decl, self_id);
- super_expr = build_modify_expr (super_expr, NOP_EXPR, self_decl);
- super_expr_list = build_tree_list (NULLT, super_expr);
-
- /* set class to begin searching */
- super_expr = build_component_ref (_OBJC_SUPER_decl, get_identifier ("class"));
-
- if (TREE_CODE (implementation_context) == CLASS_IMPLEMENTATION)
- {
- /* [_cls, __cls]Super are "pre-built" in synth_foward_declarations () */
-
- if (TREE_CODE (method_context) == INSTANCE_METHOD_DECL)
- super_expr = build_modify_expr (super_expr, NOP_EXPR, _clsSuper_ref);
- else
- super_expr = build_modify_expr (super_expr, NOP_EXPR, __clsSuper_ref);
- }
- else /* we have a category... */
- {
- tree params, super_name = CLASS_SUPER_NAME (implementation_template);
- tree funcCall;
- tree super_class;
-
- if (!super_name) /* Barf if super used in a category of Object. */
- {
- error("no super class declared in interface for `%s'",
- IDENTIFIER_POINTER (CLASS_NAME (implementation_template)));
- return error_mark_node;
- }
-
- #ifdef OBJC_CLASS_REFS
- super_class = get_class_reference (super_name);
- if (TREE_CODE (method_context) == CLASS_METHOD_DECL)
- super_class
- = build_component_ref (build_indirect_ref (super_class, "->"),
- get_identifier ("isa"));
- TREE_TYPE (super_class) = TREE_TYPE (_clsSuper_ref);
- super_expr = build_modify_expr (super_expr, NOP_EXPR, super_class);
- #else /* OBJC_CLASS_REFS */
- add_class_reference (super_name);
-
- params = build_tree_list (NULLT,
- my_build_string (IDENTIFIER_LENGTH (super_name) + 1,
- IDENTIFIER_POINTER (super_name)));
-
- if (TREE_CODE (method_context) == INSTANCE_METHOD_DECL)
- funcCall = build_function_call (objc_getClass_decl, params);
- else
- funcCall = build_function_call (objc_getMetaClass_decl, params);
-
- /* cast! */
- TREE_TYPE (funcCall) = TREE_TYPE (_clsSuper_ref);
- super_expr = build_modify_expr (super_expr, NOP_EXPR, funcCall);
- #endif /* OBJC_CLASS_REFS */
- }
- chainon (super_expr_list, build_tree_list (NULL_TREE, super_expr));
-
- super_expr = build_unary_op (ADDR_EXPR, _OBJC_SUPER_decl, 0);
- chainon (super_expr_list, build_tree_list (NULL_TREE, super_expr));
-
- return build_compound_expr (super_expr_list);
- }
- else
- {
- error ("[super ...] must appear in a method context");
- return error_mark_node;
- }
- }
-
- static tree
- encode_method_def (func_decl)
- tree func_decl;
- {
- tree parms;
- int stack_size = 0;
-
- bzero (utlbuf, BUFSIZE);
-
- /* return type */
- encode_type (TREE_TYPE (TREE_TYPE (func_decl)), utlbuf,
- utlbuf + strlen (utlbuf), OBJC_ENCODE_INLINE_DEFS);
-
- /* stack size */
- for (parms = DECL_ARGUMENTS (func_decl); parms;
- parms = TREE_CHAIN (parms))
- stack_size += TREE_INT_CST_LOW (TYPE_SIZE (DECL_ARG_TYPE (parms)))
- / BITS_PER_UNIT;
-
- sprintf (&utlbuf[strlen (utlbuf)], "%d", stack_size);
-
- /* argument types */
- for (parms = DECL_ARGUMENTS (func_decl); parms;
- parms = TREE_CHAIN (parms))
- {
- int offset_in_bytes;
-
- /* type */
- encode_type (TREE_TYPE (parms), utlbuf, utlbuf + strlen (utlbuf),
- OBJC_ENCODE_INLINE_DEFS);
-
- /* compute offset */
- #ifdef OBJCPLUS
- if (DECL_OFFSET (parms) >= 0)
- {
- offset_in_bytes = DECL_OFFSET (parms) / BITS_PER_UNIT;
- #else /* OBJCPLUS */
- if (GET_CODE (DECL_INCOMING_RTL (parms)) == MEM)
- {
- rtx addr = XEXP (DECL_INCOMING_RTL (parms), 0);
-
- /* ??? Here we assume that the parm address is indexed
- off the frame pointer or arg pointer.
- If that is not true, we produce meaningless results,
- but do not crash. */
- if (GET_CODE (addr) == PLUS
- && GET_CODE (XEXP (addr, 1)) == CONST_INT)
- offset_in_bytes = INTVAL (XEXP (addr, 1));
- else
- offset_in_bytes = 0;
- #endif /* OBJCPLUS */
-
- /* This is the case where the parm is passed as an int or double
- and it is converted to a char, short or float and stored back
- in the parmlist. In this case, describe the parm
- with the variable's declared type, and adjust the address
- if the least significant bytes (which we are using) are not
- the first ones. */
- #ifdef BYTES_BIG_ENDIAN
- if (TREE_TYPE (parms) != DECL_ARG_TYPE (parms))
- offset_in_bytes += (GET_MODE_SIZE (TYPE_MODE (DECL_ARG_TYPE (parms)))
- - GET_MODE_SIZE (GET_MODE (DECL_RTL (parms))));
- #endif
- }
- else
- offset_in_bytes = 0;
-
- #ifdef OBJCPLUS
- sprintf (&utlbuf[strlen (utlbuf)], "%d", offset_in_bytes);
- #else /* OBJCPLUS */
- /* The "+ 8" is a total hack to account for the return pc and
- saved fp on the 68k. We should redefine this format! */
- sprintf (&utlbuf[strlen (utlbuf)], "%d", offset_in_bytes + 8);
- #endif /* OBJCPLUS */
- }
-
- return get_identifier (utlbuf);
- }
-
- void
- finish_method_def ()
- {
- METHOD_ENCODING (method_context) =
- encode_method_def (current_function_decl);
-
- finish_function (0);
-
- /* this must be done AFTER finish_function, since the optimizer may
- find "may be used before set" errors. */
- method_context = NULLT; /* required to implement _msgSuper () */
- }
-
- int
- lang_report_error_function (decl)
- tree decl;
- {
- if (method_context)
- {
- fprintf (stderr, "In method `%s'\n",
- IDENTIFIER_POINTER (METHOD_SEL_NAME (method_context)));
- return 1;
- }
- else
- return 0;
- }
-
- static int
- is_complex_decl (type)
- tree type;
- {
- return (TREE_CODE (type) == ARRAY_TYPE
- || TREE_CODE (type) == FUNCTION_TYPE
- || (TREE_CODE (type) == POINTER_TYPE
- && TYPE_MAIN_VARIANT (type) != id_type));
- }
-
-
- /* Code to convert a decl node into text for a declaration in C. */
-
- static char tmpbuf[256];
-
- static void
- adorn_decl (decl, str)
- tree decl;
- char *str;
- {
- enum tree_code code = TREE_CODE (decl);
-
- if (code == ARRAY_REF)
- {
- tree anIntCst = TREE_OPERAND (decl, 1);
-
- if (anIntCst && TREE_CODE (anIntCst) == INTEGER_CST)
- sprintf (str + strlen (str), "[%d]", TREE_INT_CST_LOW (anIntCst));
- else
- strcat (str, "[]");
- }
- else if (code == ARRAY_TYPE)
- {
- tree anIntCst = TYPE_SIZE (decl);
- tree array_of = TREE_TYPE (decl);
-
- if (anIntCst && TREE_CODE (anIntCst) == INTEGER_CST)
- sprintf (str + strlen (str), "[%d]",
- TREE_INT_CST_LOW (anIntCst)/TREE_INT_CST_LOW (TYPE_SIZE (array_of)));
- else
- strcat (str, "[]");
- }
- else if (code == CALL_EXPR)
- {
- tree chain = TREE_PURPOSE (TREE_OPERAND (decl, 1));
-
- strcat (str, "(");
- while (chain)
- {
- gen_declaration (chain, str);
- chain = TREE_CHAIN (chain);
- if (chain)
- strcat (str, ", ");
- }
- strcat (str, ")");
- }
- else if (code == FUNCTION_TYPE)
- {
- tree chain = TYPE_ARG_TYPES (decl); /* a list of types */
-
- strcat (str, "(");
- while (chain && TREE_VALUE (chain) != void_type_node)
- {
- gen_declaration (TREE_VALUE (chain), str);
- chain = TREE_CHAIN (chain);
- if (chain && TREE_VALUE (chain) != void_type_node)
- strcat (str, ", ");
- }
- strcat (str, ")");
- }
- else if (code == INDIRECT_REF)
- {
- strcpy (tmpbuf, "*");
- if (TREE_TYPE (decl) && TREE_CODE (TREE_TYPE (decl)) == TREE_LIST)
- {
- tree chain;
-
- for (chain = nreverse (copy_list (TREE_TYPE (decl)));
- chain;
- chain = TREE_CHAIN (chain))
- {
- if (TREE_CODE (TREE_VALUE (chain)) == IDENTIFIER_NODE)
- {
- strcat (tmpbuf, " ");
- strcat (tmpbuf, IDENTIFIER_POINTER (TREE_VALUE (chain)));
- }
- }
- if (str[0])
- strcat (tmpbuf, " ");
- }
- strcat (tmpbuf, str);
- strcpy (str, tmpbuf);
- }
- else if (code == POINTER_TYPE)
- {
- strcpy (tmpbuf, "*");
- if (TREE_READONLY (decl) || TYPE_VOLATILE (decl))
- {
- if (TREE_READONLY (decl))
- strcat (tmpbuf, " const");
- if (TYPE_VOLATILE (decl))
- strcat (tmpbuf, " volatile");
- if (str[0])
- strcat (tmpbuf, " ");
- }
- strcat (tmpbuf, str);
- strcpy (str, tmpbuf);
- }
- }
-
- static char *
- gen_declarator (decl, buf, name)
- tree decl;
- char *buf;
- char *name;
- {
- if (decl)
- {
- enum tree_code code = TREE_CODE (decl);
- char *str;
- tree op;
- int wrap = 0;
-
- switch (code)
- {
- case ARRAY_REF: case INDIRECT_REF: case CALL_EXPR:
- {
- op = TREE_OPERAND (decl, 0);
-
- /* we have a pointer to a function or array...(*)(), (*)[] */
- if ((code == ARRAY_REF || code == CALL_EXPR) &&
- (op && TREE_CODE (op) == INDIRECT_REF))
- wrap = 1;
-
- str = gen_declarator (op, buf, name);
-
- if (wrap)
- {
- strcpy (tmpbuf, "("); strcat (tmpbuf, str); strcat (tmpbuf, ")");
- strcpy (str, tmpbuf);
- }
-
- adorn_decl (decl, str);
- break;
- }
- case ARRAY_TYPE: case FUNCTION_TYPE: case POINTER_TYPE:
- {
- str = strcpy (buf, name);
-
- /* this clause is done iteratively...rather than recursively */
- do
- {
- op = is_complex_decl (TREE_TYPE (decl))
- ? TREE_TYPE (decl)
- : NULLT;
-
- adorn_decl (decl, str);
-
- /* we have a pointer to a function or array...(*)(), (*)[] */
- if ((code == POINTER_TYPE) &&
- (op && (TREE_CODE (op) == FUNCTION_TYPE
- || TREE_CODE (op) == ARRAY_TYPE)))
- {
- strcpy (tmpbuf, "("); strcat (tmpbuf, str); strcat (tmpbuf, ")");
- strcpy (str, tmpbuf);
- }
-
- decl = is_complex_decl (TREE_TYPE (decl))
- ? TREE_TYPE (decl)
- : NULLT;
- }
- while (decl && (code = TREE_CODE (decl)));
-
- break;
- }
- case IDENTIFIER_NODE:
- /* will only happen if we are processing a "raw" expr-decl. */
- return strcpy (buf, IDENTIFIER_POINTER (decl));
- }
-
- return str;
- }
- else /* we have an abstract declarator or a _DECL node */
- {
- return strcpy (buf, name);
- }
- }
-
- static void
- gen_declspecs (declspecs, buf, raw)
- tree declspecs;
- char *buf;
- int raw;
- {
- if (raw)
- {
- tree chain;
-
- for (chain = nreverse (copy_list (declspecs)); chain; chain = TREE_CHAIN (chain))
- {
- tree aspec = TREE_VALUE (chain);
-
- if (TREE_CODE (aspec) == IDENTIFIER_NODE)
- strcat (buf, IDENTIFIER_POINTER (aspec));
- else if (TREE_CODE (aspec) == RECORD_TYPE)
- {
- if (TYPE_NAME (aspec))
- {
- tree protocol_list = TYPE_PROTOCOL_LIST (aspec);
-
- if (!TREE_STATIC_TEMPLATE (aspec))
- strcat (buf, "struct ");
- strcat (buf, IDENTIFIER_POINTER (TYPE_NAME (aspec)));
- /* NEW!!! */
- if (protocol_list)
- {
- tree chain = protocol_list;
-
- strcat (buf, " <");
- while (chain)
- {
- strcat (buf, IDENTIFIER_POINTER (PROTOCOL_NAME (TREE_VALUE (chain))));
- chain = TREE_CHAIN (chain);
- if (chain)
- strcat (buf, ", ");
- }
- strcat (buf, ">");
- }
- }
- else
- strcat (buf, "untagged struct");
- }
- else if (TREE_CODE (aspec) == UNION_TYPE)
- {
- if (TYPE_NAME (aspec))
- {
- strcat (buf, "union ");
- strcat (buf, IDENTIFIER_POINTER (TYPE_NAME (aspec)));
- }
- else
- strcat (buf, "untagged union");
- }
- else if (TREE_CODE (aspec) == ENUMERAL_TYPE)
- {
- if (TYPE_NAME (aspec))
- {
- strcat (buf, "enum ");
- strcat (buf, IDENTIFIER_POINTER (TYPE_NAME (aspec)));
- }
- else
- strcat (buf, "untagged enum");
- }
- else if (TREE_CODE (aspec) == TYPE_DECL && DECL_NAME (aspec))
- {
- strcat (buf, IDENTIFIER_POINTER (DECL_NAME (aspec)));
- }
- /* NEW!!! */
- else if (TREE_CODE (aspec) == POINTER_TYPE
- && TYPE_MAIN_VARIANT (aspec) == id_type)
- {
- tree protocol_list = TYPE_PROTOCOL_LIST (aspec);
-
- strcat (buf, "id");
- if (protocol_list)
- {
- tree chain = protocol_list;
-
- strcat (buf, " <");
- while (chain)
- {
- strcat (buf, IDENTIFIER_POINTER (PROTOCOL_NAME (TREE_VALUE (chain))));
- chain = TREE_CHAIN (chain);
- if (chain)
- strcat (buf, ", ");
- }
- strcat (buf, ">");
- }
- }
- if (TREE_CHAIN (chain))
- strcat (buf, " ");
- }
- }
- else
- {
- /* type qualifiers */
-
- if (TREE_READONLY (declspecs))
- strcat (buf, "const ");
- if (TYPE_VOLATILE (declspecs))
- strcat (buf, "volatile ");
-
- switch (TREE_CODE (declspecs))
- {
- /* type specifiers */
-
- case INTEGER_TYPE: /* signed integer types */
-
- declspecs = TYPE_MAIN_VARIANT (declspecs);
-
- if (declspecs == short_integer_type_node) /* 's' */
- strcat (buf, "short");
- else if (declspecs == integer_type_node) /* 'i' */
- strcat (buf, "int");
- else if (declspecs == long_integer_type_node) /* 'l' */
- strcat (buf, "long");
- else if (declspecs == long_long_integer_type_node)
- strcat (buf, "long long");
- else if (declspecs == signed_char_type_node || /* 'c' */
- declspecs == char_type_node)
- strcat (buf, "char");
-
- /* unsigned integer types */
-
- else if (declspecs == short_unsigned_type_node) /* 'S' */
- strcat (buf, "unsigned short");
- else if (declspecs == unsigned_type_node) /* 'I' */
- strcat (buf, "unsigned int");
- else if (declspecs == long_unsigned_type_node) /* 'L' */
- strcat (buf, "unsigned long");
- else if (declspecs == long_long_unsigned_type_node) /* 'L' */
- strcat (buf, "unsigned long long");
- else if (declspecs == unsigned_char_type_node) /* 'C' */
- strcat (buf, "unsigned char");
- break;
-
- case REAL_TYPE: /* floating point types */
-
- declspecs = TYPE_MAIN_VARIANT (declspecs);
-
- if (declspecs == float_type_node) /* 'f' */
- strcat (buf, "float");
- else if (declspecs == double_type_node) /* 'd' */
- strcat (buf, "double");
- else if (declspecs == long_double_type_node) /* 'd' */
- strcat (buf, "long double");
- break;
-
- case RECORD_TYPE:
- if (TYPE_NAME (declspecs) &&
- (TREE_CODE (TYPE_NAME (declspecs)) == IDENTIFIER_NODE))
- {
- tree protocol_list = TYPE_PROTOCOL_LIST (declspecs);
-
- if (!TREE_STATIC_TEMPLATE (declspecs))
- strcat (buf, "struct ");
- strcat (buf, IDENTIFIER_POINTER (TYPE_NAME (declspecs)));
- /* NEW!!! */
- if (protocol_list)
- {
- tree chain = protocol_list;
-
- strcat (buf, " <");
- while (chain)
- {
- strcat (buf, IDENTIFIER_POINTER (PROTOCOL_NAME (TREE_VALUE (chain))));
- chain = TREE_CHAIN (chain);
- if (chain)
- strcat (buf, ", ");
- }
- strcat (buf, ">");
- }
- }
- else
- strcat (buf, "untagged struct");
- break;
- case UNION_TYPE:
- if (TYPE_NAME (declspecs) &&
- (TREE_CODE (TYPE_NAME (declspecs)) == IDENTIFIER_NODE))
- {
- strcat (buf, "union ");
- strcat (buf, IDENTIFIER_POINTER (TYPE_NAME (declspecs)));
- }
- else
- strcat (buf, "untagged union");
- break;
- case ENUMERAL_TYPE:
- if (TYPE_NAME (declspecs) &&
- (TREE_CODE (TYPE_NAME (declspecs)) == IDENTIFIER_NODE))
- {
- strcat (buf, "enum ");
- strcat (buf, IDENTIFIER_POINTER (TYPE_NAME (declspecs)));
- }
- else
- strcat (buf, "untagged enum");
- break;
- case VOID_TYPE:
- strcat (buf, "void");
- break;
- /* NEW!!! */
- case POINTER_TYPE:
- {
- tree protocol_list = TYPE_PROTOCOL_LIST (declspecs);
-
- strcat (buf, "id");
- if (protocol_list)
- {
- tree chain = protocol_list;
-
- strcat (buf, " <");
- while (chain)
- {
- strcat (buf, IDENTIFIER_POINTER (PROTOCOL_NAME (TREE_VALUE (chain))));
- chain = TREE_CHAIN (chain);
- if (chain)
- strcat (buf, ", ");
- }
- strcat (buf, ">");
- }
- }
- }
- }
- }
-
- static char *
- gen_declaration (atype_or_adecl, buf)
- tree atype_or_adecl;
- char *buf;
- {
- char declbuf[256];
-
- if (TREE_CODE (atype_or_adecl) == TREE_LIST)
- {
- tree declspecs; /* "identifier_node", "record_type" */
- tree declarator; /* "array_ref", "indirect_ref", "call_expr"... */
-
- /* we have a "raw", abstract delclarator (typename) */
- declarator = TREE_VALUE (atype_or_adecl);
- declspecs = TREE_PURPOSE (atype_or_adecl);
-
- gen_declspecs (declspecs, buf, 1);
- if (declarator)
- {
- strcat (buf, " ");
- strcat (buf, gen_declarator (declarator, declbuf, ""));
- }
- }
- else
- {
- tree atype;
- tree declspecs; /* "integer_type", "real_type", "record_type"... */
- tree declarator; /* "array_type", "function_type", "pointer_type". */
-
- if (TREE_CODE (atype_or_adecl) == FIELD_DECL
- || TREE_CODE (atype_or_adecl) == PARM_DECL
- || TREE_CODE (atype_or_adecl) == FUNCTION_DECL)
- atype = TREE_TYPE (atype_or_adecl);
- else
- atype = atype_or_adecl; /* assume we have a *_type node */
-
- if (is_complex_decl (atype))
- {
- tree chain;
-
- /* get the declaration specifier...it is at the end of the list */
- declarator = chain = atype;
- do
- chain = TREE_TYPE (chain); /* not TREE_CHAIN (chain); */
- while (is_complex_decl (chain));
- declspecs = chain;
- }
- else
- {
- declspecs = atype;
- declarator = NULLT;
- }
-
- gen_declspecs (declspecs, buf, 0);
-
- if (TREE_CODE (atype_or_adecl) == FIELD_DECL
- || TREE_CODE (atype_or_adecl) == PARM_DECL
- || TREE_CODE (atype_or_adecl) == FUNCTION_DECL)
- {
- const char *decl_name;
-
- if (DECL_NAME (atype_or_adecl))
- decl_name = IDENTIFIER_POINTER (DECL_NAME (atype_or_adecl));
- else
- decl_name = "";
-
- if (declarator)
- {
- strcat (buf, " ");
- strcat (buf, gen_declarator (declarator, declbuf, decl_name));
- }
- else if (decl_name[0])
- {
- strcat (buf, " ");
- strcat (buf, decl_name);
- }
- }
- else if (declarator)
- {
- strcat (buf, " ");
- strcat (buf, gen_declarator (declarator, declbuf, ""));
- }
- }
- return buf;
- }
-
- #define RAW_TYPESPEC(meth) (TREE_VALUE (TREE_PURPOSE (TREE_TYPE (meth))))
-
- static char *
- gen_method_decl (method, buf)
- tree method;
- char *buf;
- {
- tree chain;
-
- if (RAW_TYPESPEC (method) != objc_object_reference)
- {
- strcpy (buf, "(");
- gen_declaration (TREE_TYPE (method), buf);
- strcat (buf, ")");
- }
-
- chain = METHOD_SEL_ARGS (method);
- if (chain)
- { /* we have a chain of keyword_decls */
- do
- {
- if (KEYWORD_KEY_NAME (chain))
- strcat (buf, IDENTIFIER_POINTER (KEYWORD_KEY_NAME (chain)));
-
- strcat (buf, ":");
- if (RAW_TYPESPEC (chain) != objc_object_reference)
- {
- strcat (buf, "(");
- gen_declaration (TREE_TYPE (chain), buf);
- strcat (buf, ")");
- }
- strcat (buf, IDENTIFIER_POINTER (KEYWORD_ARG_NAME (chain)));
- if (chain = TREE_CHAIN (chain))
- strcat (buf, " ");
- }
- while (chain);
-
- if (METHOD_ADD_ARGS (method) == (tree)1)
- strcat (buf, ", ...");
- else if (METHOD_ADD_ARGS (method))
- {
- /* We have a tree list node as generate by get_parm_info (). */
- chain = TREE_PURPOSE (METHOD_ADD_ARGS (method));
- /* know we have a chain of parm_decls */
- while (chain)
- {
- strcat (buf, ", ");
- gen_declaration (chain, buf);
- chain = TREE_CHAIN (chain);
- }
- }
- }
- else /* we have a unary selector */
- {
- strcat (buf, IDENTIFIER_POINTER (METHOD_SEL_NAME (method)));
- }
-
- return buf;
- }
-
- void
- gen_prototype (fp, decl)
- FILE *fp;
- tree decl;
- {
- /* we have a function definition - generate prototype */
- bzero (errbuf, BUFSIZE);
- gen_declaration (decl, errbuf);
- fprintf (fp, "%s;\n", errbuf);
- }
- /*
- * debug info...
- */
- static void
- dump_interface (fp, chain)
- FILE *fp;
- tree chain;
- {
- char *buf = (char *)xmalloc (256);
- char *my_name = IDENTIFIER_POINTER (CLASS_NAME (chain));
- tree ivar_decls = CLASS_RAW_IVARS (chain);
- tree nst_methods = CLASS_NST_METHODS (chain);
- tree cls_methods = CLASS_CLS_METHODS (chain);
-
- fprintf (fp, "\n@interface %s", my_name);
-
- if (CLASS_SUPER_NAME (chain))
- {
- char *super_name = IDENTIFIER_POINTER (CLASS_SUPER_NAME (chain));
- fprintf (fp, " : %s\n", super_name);
- }
- else
- fprintf (fp, "\n");
-
- if (ivar_decls)
- {
- fprintf (fp, "{\n");
- do
- {
- bzero (buf, 256);
- fprintf (fp, "\t%s;\n", gen_declaration (ivar_decls, buf));
- ivar_decls = TREE_CHAIN (ivar_decls);
- }
- while (ivar_decls);
- fprintf (fp, "}\n");
- }
-
- while (nst_methods)
- {
- bzero (buf, 256);
- fprintf (fp, "- %s;\n", gen_method_decl (nst_methods, buf));
- nst_methods = TREE_CHAIN (nst_methods);
- }
-
- while (cls_methods)
- {
- bzero (buf, 256);
- fprintf (fp, "+ %s;\n", gen_method_decl (cls_methods, buf));
- cls_methods = TREE_CHAIN (cls_methods);
- }
- fprintf (fp, "\n@end");
- }
-
- void
- init_objc ()
- {
- /* Add the special tree codes of Objective C to the tables. */
-
- tree_code_type
- = (char **) realloc (tree_code_type,
- sizeof (char *) * LAST_OBJC_TREE_CODE);
- tree_code_length
- = (int *) realloc (tree_code_length,
- sizeof (int) * LAST_OBJC_TREE_CODE);
- tree_code_name
- = (char **) realloc (tree_code_name,
- sizeof (char *) * LAST_OBJC_TREE_CODE);
- bcopy (objc_tree_code_type,
- tree_code_type + (int) FIRST_OBJC_TREE_CODE,
- (((int) LAST_OBJC_TREE_CODE - (int) FIRST_OBJC_TREE_CODE)
- * sizeof (char *)));
- bcopy (objc_tree_code_length,
- tree_code_length + (int) FIRST_OBJC_TREE_CODE,
- (((int) LAST_OBJC_TREE_CODE - (int) FIRST_OBJC_TREE_CODE)
- * sizeof (int)));
- bcopy (objc_tree_code_name,
- tree_code_name + (int) FIRST_OBJC_TREE_CODE,
- (((int) LAST_OBJC_TREE_CODE - (int) FIRST_OBJC_TREE_CODE)
- * sizeof (char *)));
-
- errbuf = (char *)xmalloc (BUFSIZE);
- utlbuf = (char *)xmalloc (BUFSIZE);
- hash_init ();
- synth_module_prologue ();
- }
-
- void
- finish_objc ()
- {
- struct imp_entry *impent;
- tree chain;
-
- if (implementation_context || class_names_chain ||
- meth_var_names_chain || meth_var_types_chain || sel_ref_chain)
- generate_objc_symtab_decl ();
-
- for (impent = imp_list; impent; impent = impent->next)
- {
- implementation_context = impent->imp_context;
- implementation_template = impent->imp_template;
-
- _OBJC_CLASS_decl = impent->class_decl;
- _OBJC_METACLASS_decl = impent->meta_decl;
-
- if (TREE_CODE (implementation_context) == CLASS_IMPLEMENTATION)
- {
- /* all of the following reference the string pool... */
- generate_ivar_lists ();
- generate_dispatch_tables ();
- generate_shared_structures ();
- }
- else
- {
- generate_dispatch_tables ();
- generate_category (implementation_context);
- }
- }
-
- if (sel_ref_chain)
- build_selector_translation_table ();
-
- if (protocol_chain)
- generate_protocols ();
-
- if (implementation_context || class_names_chain ||
- meth_var_names_chain || meth_var_types_chain || sel_ref_chain)
- {
- build_module_descriptor ();
- }
-
- /* dump the string table last */
-
- generate_strings ();
-
- /* dump the class references...this forces the appropriate classes
- to be linked into the executable image, preserving unix archive
- semantics...this can be removed when we move to a more dynamically
- linked environment
- */
- for (chain = cls_ref_chain; chain; chain = TREE_CHAIN (chain))
- {
- sprintf (utlbuf, ".reference .objc_class_name_%s",
- IDENTIFIER_POINTER (TREE_VALUE (chain)));
- assemble_asm (my_build_string (strlen (utlbuf) + 1, utlbuf));
- }
- for (impent = imp_list; impent; impent = impent->next)
- {
- implementation_context = impent->imp_context;
- implementation_template = impent->imp_template;
-
- if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION)
- {
- sprintf (utlbuf, ".objc_class_name_%s=0",
- IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
- assemble_asm (my_build_string (strlen (utlbuf) + 1, utlbuf));
-
- sprintf (utlbuf, ".globl .objc_class_name_%s",
- IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)));
- assemble_asm (my_build_string (strlen (utlbuf) + 1, utlbuf));
- }
- else if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION)
- {
- /* Do the same for categories. Even though no references to these
- symbols are generated automatically by the compiler, it gives
- you a handle to pull them into an archive by hand. */
- sprintf (utlbuf, ".objc_category_name_%s_%s=0",
- IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)),
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (impent->imp_context)));
- assemble_asm (my_build_string (strlen (utlbuf) + 1, utlbuf));
-
- sprintf (utlbuf, ".globl .objc_category_name_%s_%s",
- IDENTIFIER_POINTER (CLASS_NAME (impent->imp_context)),
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (impent->imp_context)));
- assemble_asm (my_build_string (strlen (utlbuf) + 1, utlbuf));
- }
- }
- /*** this fixes a gross bug in the assembler...it `expects' #APP to have
- *** a matching #NO_APP, or it crashes (sometimes). app_disable () will
- *** insure this is the case. 5/19/89, s.naroff.
- ***/
- if (cls_ref_chain || imp_list)
- app_disable ();
-
- if (flag_gen_declaration)
- {
- add_class (implementation_context);
- dump_interface (gen_declaration_file, implementation_context);
- }
- if (warn_selector)
- {
- int slot;
-
- /* Run through the selector hash tables and print a warning for any
- selector which has multiple methods. */
-
- for (slot = 0; slot < SIZEHASHTABLE; slot++)
- {
- hash hsh;
-
- for (hsh = cls_method_hash_list[slot]; hsh; hsh = hsh->next)
- {
- if (hsh->list)
- {
- tree meth = hsh->key;
- char type = (TREE_CODE (meth) == INSTANCE_METHOD_DECL)
- ? '-' : '+';
- attr loop;
-
- warning ("potential selector conflict for method `%s'",
- IDENTIFIER_POINTER (METHOD_SEL_NAME (meth)));
- warn_with_method ("found", type, meth);
- for (loop = hsh->list; loop; loop = loop->next)
- warn_with_method ("found", type, loop->value);
- }
- }
- }
-
- for (slot = 0; slot < SIZEHASHTABLE; slot++)
- {
- hash hsh;
-
- for (hsh = nst_method_hash_list[slot]; hsh; hsh = hsh->next)
- {
- if (hsh->list)
- {
- tree meth = hsh->key;
- char type = (TREE_CODE (meth) == INSTANCE_METHOD_DECL)
- ? '-' : '+';
- attr loop;
-
- warning ("potential selector conflict for method `%s'",
- IDENTIFIER_POINTER (METHOD_SEL_NAME (meth)));
- warn_with_method ("found", type, meth);
- for (loop = hsh->list; loop; loop = loop->next)
- warn_with_method ("found", type, loop->value);
- }
- }
- }
- }
- }
-
- #ifdef DEBUG
-
- static void
- objc_debug (fp)
- FILE *fp;
- {
- char *buf = (char *)xmalloc (256);
-
- { /* dump function prototypes */
- tree loop = _OBJC_MODULES_decl;
-
- fprintf (fp, "\n\nfunction prototypes:\n");
- while (loop)
- {
- if (TREE_CODE (loop) == FUNCTION_DECL && DECL_INITIAL (loop))
- {
- /* we have a function definition - generate prototype */
- bzero (errbuf, BUFSIZE);
- gen_declaration (loop, errbuf);
- fprintf (fp, "%s;\n", errbuf);
- }
- loop = TREE_CHAIN (loop);
- }
- }
- { /* dump global chains */
- tree loop;
- int i, index = 0, offset = 0;
- hash hashlist;
-
- for (i = 0; i < SIZEHASHTABLE; i++)
- {
- if (hashlist = nst_method_hash_list[i])
- {
- fprintf (fp, "\n\nnst_method_hash_list[%d]:\n", i);
- do
- {
- bzero (buf, 256);
- fprintf (fp, "-%s;\n", gen_method_decl (hashlist->key, buf));
- hashlist = hashlist->next;
- }
- while (hashlist);
- }
- }
- for (i = 0; i < SIZEHASHTABLE; i++)
- {
- if (hashlist = cls_method_hash_list[i])
- {
- fprintf (fp, "\n\ncls_method_hash_list[%d]:\n", i);
- do
- {
- bzero (buf, 256);
- fprintf (fp, "-%s;\n", gen_method_decl (hashlist->key, buf));
- hashlist = hashlist->next;
- }
- while (hashlist);
- }
- }
- fprintf (fp, "\nsel_refdef_chain:\n");
- for (loop = sel_refdef_chain; loop; loop = TREE_CHAIN (loop))
- {
- fprintf (fp, "(index: %4d offset: %4d) %s\n", index, offset,
- IDENTIFIER_POINTER (TREE_VALUE (loop)));
- index++;
- /* add one for the '\0' character */
- offset += IDENTIFIER_LENGTH (TREE_VALUE (loop)) + 1;
- }
- fprintf (fp, "\n (max_selector_index: %4d.\n", max_selector_index);
- }
- }
- #endif
-
- void
- print_lang_statistics ()
- {
- }
-