/* Implement classes and message passing for Objective C.
- Copyright (C) 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000,
- 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001,
+ 2002, 2003, 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
Contributed by Steve Naroff.
This file is part of GCC.
GCC 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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
/* Purpose: This module implements the Objective-C 4.0 language.
#include "cp-tree.h"
#else
#include "c-tree.h"
+#include "c-lang.h"
#endif
#include "c-common.h"
#include "debug.h"
#include "target.h"
#include "diagnostic.h"
+#include "intl.h"
#include "cgraph.h"
#include "tree-iterator.h"
#include "libfuncs.h"
#define OBJC_VOID_AT_END void_list_node
+static unsigned int should_call_super_dealloc = 0;
+
+/* When building Objective-C++, we need in_late_binary_op. */
+#ifdef OBJCPLUS
+bool in_late_binary_op = false;
+#endif /* OBJCPLUS */
+
/* When building Objective-C++, we are not linking against the C front-end
and so need to replicate the C tree-construction functions in some way. */
#ifdef OBJCPLUS
the module (file) was compiled for, and is recorded in the
module descriptor. */
-#define OBJC_VERSION (flag_next_runtime ? 5 : 8)
+#define OBJC_VERSION (flag_next_runtime ? 6 : 8)
#define PROTOCOL_VERSION 2
/* (Decide if these can ever be validly changed.) */
/* Code generation. */
-static void synth_module_prologue (void);
static tree objc_build_constructor (tree, tree);
-static void build_module_descriptor (void);
-static void build_module_initializer_routine (void);
-static tree init_module_descriptor (tree);
-static tree build_objc_method_call (int, tree, tree, tree, tree);
-static void generate_strings (void);
+static tree build_objc_method_call (location_t, int, tree, tree, tree, tree);
static tree get_proto_encoding (tree);
-static void build_selector_translation_table (void);
static tree lookup_interface (tree);
static tree objc_add_static_instance (tree, tree);
static void objc_start_function (tree, tree, tree, struct c_arg_info *);
#endif
static tree start_protocol (enum tree_code, tree, tree);
-static tree build_method_decl (enum tree_code, tree, tree, tree);
+static tree build_method_decl (enum tree_code, tree, tree, tree, bool);
static tree objc_add_method (tree, tree, int);
static tree add_instance_variable (tree, int, tree);
static tree build_ivar_reference (tree);
static tree is_ivar (tree, tree);
-static int is_private (tree);
-static tree get_super_receiver (void);
static void build_objc_exception_stuff (void);
static void build_next_objc_exception_stuff (void);
-static tree build_ivar_template (void);
-static tree build_method_template (void);
-static void build_private_template (tree);
+/* We only need the following for ObjC; ObjC++ will use C++'s definition
+ of DERIVED_FROM_P. */
+#ifndef OBJCPLUS
+static bool objc_derived_from_p (tree, tree);
+#define DERIVED_FROM_P(PARENT, CHILD) objc_derived_from_p (PARENT, CHILD)
+#endif
+static void objc_xref_basetypes (tree, tree);
+
static void build_class_template (void);
static void build_selector_template (void);
static void build_category_template (void);
-static tree lookup_method_in_hash_lists (tree, int);
static void build_super_template (void);
-static tree build_category_initializer (tree, tree, tree, tree, tree, tree);
static tree build_protocol_initializer (tree, tree, tree, tree, tree);
-static void synth_forward_declarations (void);
-static int ivar_list_length (tree);
-static tree get_class_ivars (tree);
-static void generate_ivar_lists (void);
-static void generate_dispatch_tables (void);
-static void generate_shared_structures (void);
+static tree get_class_ivars (tree, bool);
static tree generate_protocol_list (tree);
static void build_protocol_reference (tree);
-static tree build_keyword_selector (tree);
-static const char *synth_id_with_class_suffix (const char *, tree);
+#ifdef OBJCPLUS
+static void objc_generate_cxx_cdtors (void);
+#endif
-static void generate_static_references (void);
-static int check_methods_accessible (tree, tree, int);
-static void encode_aggregate_within (tree, int, int, int, int);
-static const char *objc_demangle (const char *);
+static const char *synth_id_with_class_suffix (const char *, tree);
/* Hash tables to manage the global pool of method prototypes. */
hash *nst_method_hash_list = 0;
hash *cls_method_hash_list = 0;
-static size_t hash_func (tree);
-static void hash_init (void);
-static void hash_enter (hash *, tree);
static hash hash_lookup (hash *, tree);
-static void hash_add_attr (hash, tree);
static tree lookup_method (tree, tree);
static tree lookup_method_static (tree, tree, int);
-static void add_method_to_hash_list (hash *, tree);
-static tree add_class (tree);
-static void add_category (tree, tree);
-static inline tree lookup_category (tree, tree);
enum string_section
{
};
static tree add_objc_string (tree, enum string_section);
-static tree get_objc_string_decl (tree, enum string_section);
static tree build_objc_string_decl (enum string_section);
-static tree build_selector_reference_decl (void);
static void build_selector_table_decl (void);
/* Protocol additions. */
-static tree add_protocol (tree);
static tree lookup_protocol (tree);
-static void check_protocol_recursively (tree, tree);
static tree lookup_and_install_protocols (tree);
/* Type encoding. */
static void encode_type_qualifiers (tree);
-static void encode_pointer (tree, int, int);
-static void encode_array (tree, int, int);
-static void encode_aggregate (tree, int, int);
-static void encode_next_bitfield (int);
-static void encode_gnu_bitfield (int, tree, int);
static void encode_type (tree, int, int);
static void encode_field_decl (tree, int, int);
#else
static void really_start_method (tree, struct c_arg_info *);
#endif
-static int objc_types_are_equivalent (tree, tree);
-static int comp_proto_with_proto (tree, tree);
-static tree get_arg_type_list (tree, int, int);
+static int comp_proto_with_proto (tree, tree, int);
static void objc_push_parm (tree);
#ifdef OBJCPLUS
static tree objc_get_parm_info (int);
#else
static struct c_arg_info *objc_get_parm_info (int);
#endif
-static void synth_self_and_ucmd_args (void);
/* Utilities for debugging and error diagnostics. */
-static void warn_with_method (const char *, int, tree);
-static void error_with_ivar (const char *, tree);
static char *gen_type_name (tree);
static char *gen_type_name_0 (tree);
static char *gen_method_decl (tree);
static char *gen_declaration (tree);
-static void dump_interface (FILE *, tree);
/* Everything else. */
-static tree lookup_method_in_protocol_list (tree, tree, int);
-static tree lookup_protocol_in_reflist (tree, tree);
-static tree start_var_decl (tree, const char *);
-static void finish_var_decl (tree, tree);
static tree create_field_decl (tree, const char *);
-static tree setup_string_decl (void);
-static int check_string_class_template (void);
-static tree my_build_string (int, const char *);
-static void build_objc_symtab_template (void);
-static tree init_def_list (tree);
-static tree init_objc_symtab (tree);
-static tree build_metadata_decl (const char *, tree);
-static void forward_declare_categories (void);
-static void generate_objc_symtab_decl (void);
-static tree build_selector (tree);
-static tree build_typed_selector_reference (tree, tree);
-static tree build_selector_reference (tree);
-static tree build_class_reference_decl (void);
static void add_class_reference (tree);
static void build_protocol_template (void);
-static tree build_descriptor_table_initializer (tree, tree);
-static tree build_method_prototype_list_template (tree, int);
-static tree build_method_prototype_template (void);
-static tree objc_method_parm_type (tree);
-static int objc_encoded_type_size (tree);
static tree encode_method_prototype (tree);
-static tree generate_descriptor_table (tree, const char *, int, tree, tree);
-static void generate_method_descriptors (tree);
-static void generate_protocol_references (tree);
-static void generate_protocols (void);
-static void check_ivars (tree, tree);
-static tree build_ivar_list_template (tree, int);
-static tree build_method_list_template (tree, int);
-static tree build_ivar_list_initializer (tree, tree);
-static tree generate_ivars_list (tree, const char *, int, tree);
-static tree build_dispatch_table_initializer (tree, tree);
-static tree generate_dispatch_table (tree, const char *, int, tree);
-static tree build_shared_structure_initializer (tree, tree, tree, tree,
- tree, int, tree, tree, tree);
-static void generate_category (tree);
-static tree adjust_type_for_id_default (tree);
-static tree check_duplicates (hash, int, int);
-static tree receiver_is_class_object (tree, int, int);
-static int check_methods (tree, tree, int);
-static int conforms_to_protocol (tree, tree);
-static void check_protocol (tree, const char *, const char *);
-static void check_protocols (tree, const char *, const char *);
static void generate_classref_translation_entry (tree);
static void handle_class_ref (tree);
static void generate_struct_by_value_array (void)
/* Runtime metadata flags. */
#define CLS_FACTORY 0x0001L
#define CLS_META 0x0002L
+#define CLS_HAS_CXX_STRUCTORS 0x2000L
#define OBJC_MODIFIER_STATIC 0x00000001
#define OBJC_MODIFIER_FINAL 0x00000002
#define TAG_SETJMP "_setjmp"
#define UTAG_EXCDATA "_objc_exception_data"
+#define TAG_ASSIGNIVAR "objc_assign_ivar"
+#define TAG_ASSIGNGLOBAL "objc_assign_global"
+#define TAG_ASSIGNSTRONGCAST "objc_assign_strongCast"
+
+/* Branch entry points. All that matters here are the addresses;
+ functions with these names do not really exist in libobjc. */
+
+#define TAG_MSGSEND_FAST "objc_msgSend_Fast"
+#define TAG_ASSIGNIVAR_FAST "objc_assign_ivar_Fast"
+
+#define TAG_CXX_CONSTRUCT ".cxx_construct"
+#define TAG_CXX_DESTRUCT ".cxx_destruct"
+
/* GNU-specific tags. */
#define TAG_EXECCLASS "__objc_exec_class"
#define TAG_GNUINIT "__objc_gnu_init"
+/* Flags for lookup_method_static(). */
+#define OBJC_LOOKUP_CLASS 1 /* Look for class methods. */
+#define OBJC_LOOKUP_NO_SUPER 2 /* Do not examine superclasses. */
+
/* The OCTI_... enumeration itself is in objc/objc-act.h. */
tree objc_global_trees[OCTI_MAX];
/* Store all constructed constant strings in a hash table so that
they get uniqued properly. */
-struct string_descriptor GTY(())
-{
+struct GTY(()) string_descriptor {
/* The literal argument . */
tree literal;
static GTY((param_is (struct string_descriptor))) htab_t string_htab;
-static hashval_t string_hash (const void *);
-static int string_eq (const void *, const void *);
+/* Store the EH-volatilized types in a hash table, for easy retrieval. */
+struct GTY(()) volatilized_type {
+ tree type;
+};
+
+static GTY((param_is (struct volatilized_type))) htab_t volatilized_htab;
FILE *gen_declaration_file;
static int generating_instance_variables = 0;
+/* For building an objc struct. These may not be used when this file
+ is compiled as part of obj-c++. */
+
+static bool objc_building_struct;
+static struct c_struct_parse_info *objc_struct_info ATTRIBUTE_UNUSED;
+
+/* Start building a struct for objc. */
+
+static tree
+objc_start_struct (tree name)
+{
+ gcc_assert (!objc_building_struct);
+ objc_building_struct = true;
+ return start_struct (input_location, RECORD_TYPE, name, &objc_struct_info);
+}
+
+/* Finish building a struct for objc. */
+
+static tree
+objc_finish_struct (tree type, tree fieldlist)
+{
+ gcc_assert (objc_building_struct);
+ objc_building_struct = false;
+ return finish_struct (input_location, type, fieldlist, NULL_TREE,
+ objc_struct_info);
+}
+
/* Some platforms pass small structures through registers versus
through an invisible pointer. Determine at what size structure is
the transition point between the two possibilities. */
char buffer[5];
/* Create an unnamed struct that has `i' character components */
- type = start_struct (RECORD_TYPE, NULL_TREE);
+ type = objc_start_struct (NULL_TREE);
strcpy (buffer, "c1");
field_decl = create_field_decl (char_type_node,
buffer);
chainon (field_decl_chain, field_decl);
}
- finish_struct (type, field_decl_chain, NULL_TREE);
+ objc_finish_struct (type, field_decl_chain);
aggregate_in_mem[i] = aggregate_value_p (type, 0);
if (!aggregate_in_mem[i])
#endif
return false;
-#ifndef USE_MAPPED_LOCATION
- /* Force the line number back to 0; check_newline will have
- raised it to 1, which will make the builtin functions appear
- not to be built in. */
- input_line = 0;
-#endif
-
/* If gen_declaration desired, open the output file. */
if (flag_gen_declaration)
{
init_objc ();
- if (print_struct_values)
+ if (print_struct_values && !flag_compare_debug)
generate_struct_by_value_array ();
return true;
#endif
/* Finalize Objective-C runtime data. No need to generate tables
- and code if only checking syntax. */
- if (!flag_syntax_only)
+ and code if only checking syntax, or if generating a PCH file. */
+ if (!flag_syntax_only && !pch_file)
finish_objc ();
if (gen_declaration_file)
fclose (gen_declaration_file);
-
-#ifdef OBJCPLUS
- cp_finish_file ();
-#endif
}
\f
/* Return the first occurrence of a method declaration corresponding
}
void
-objc_start_class_interface (tree class, tree super_class, tree protos)
+objc_start_class_interface (tree klass, tree super_class, tree protos)
{
objc_interface_context
= objc_ivar_context
- = start_class (CLASS_INTERFACE_TYPE, class, super_class, protos);
+ = start_class (CLASS_INTERFACE_TYPE, klass, super_class, protos);
objc_public_flag = 0;
}
void
-objc_start_category_interface (tree class, tree categ, tree protos)
+objc_start_category_interface (tree klass, tree categ, tree protos)
{
objc_interface_context
- = start_class (CATEGORY_INTERFACE_TYPE, class, categ, protos);
+ = start_class (CATEGORY_INTERFACE_TYPE, klass, categ, protos);
objc_ivar_chain
= continue_class (objc_interface_context);
}
}
void
-objc_start_class_implementation (tree class, tree super_class)
+objc_start_class_implementation (tree klass, tree super_class)
{
objc_implementation_context
= objc_ivar_context
- = start_class (CLASS_IMPLEMENTATION_TYPE, class, super_class, NULL_TREE);
+ = start_class (CLASS_IMPLEMENTATION_TYPE, klass, super_class, NULL_TREE);
objc_public_flag = 0;
}
void
-objc_start_category_implementation (tree class, tree categ)
+objc_start_category_implementation (tree klass, tree categ)
{
objc_implementation_context
- = start_class (CATEGORY_IMPLEMENTATION_TYPE, class, categ, NULL_TREE);
+ = start_class (CATEGORY_IMPLEMENTATION_TYPE, klass, categ, NULL_TREE);
objc_ivar_chain
= continue_class (objc_implementation_context);
}
void
objc_finish_implementation (void)
{
+#ifdef OBJCPLUS
+ if (flag_objc_call_cxx_cdtors)
+ objc_generate_cxx_cdtors ();
+#endif
+
if (objc_implementation_context)
{
finish_class (objc_implementation_context);
objc_implementation_context = NULL_TREE;
}
else
- warning ("%<@end%> must appear in an @implementation context");
+ warning (0, "%<@end%> must appear in an @implementation context");
}
void
}
tree
-objc_build_method_signature (tree rettype, tree selector, tree optparms)
+objc_build_method_signature (tree rettype, tree selector,
+ tree optparms, bool ellipsis)
{
- return build_method_decl (objc_inherit_code, rettype, selector, optparms);
+ return build_method_decl (objc_inherit_code, rettype, selector,
+ optparms, ellipsis);
}
void
unsigned char code = C_RID_CODE (ident);
return (OBJC_IS_AT_KEYWORD (code)
-#ifdef OBJCPLUS
|| code == RID_CLASS || code == RID_PUBLIC
|| code == RID_PROTECTED || code == RID_PRIVATE
- || code == RID_TRY || code == RID_THROW || code == RID_CATCH
-#endif
- );
+ || code == RID_TRY || code == RID_THROW || code == RID_CATCH);
}
/* Return true if TYPE is 'id'. */
return OBJC_TYPE_NAME (type) == objc_class_id;
}
+/* Construct a C struct with same name as KLASS, a base struct with tag
+ SUPER_NAME (if any), and FIELDS indicated. */
-int
-objc_types_compatible_p (tree type1, tree type2)
+static tree
+objc_build_struct (tree klass, tree fields, tree super_name)
+{
+ tree name = CLASS_NAME (klass);
+ tree s = objc_start_struct (name);
+ tree super = (super_name ? xref_tag (RECORD_TYPE, super_name) : NULL_TREE);
+ tree t, objc_info = NULL_TREE;
+
+ if (super)
+ {
+ /* Prepend a packed variant of the base class into the layout. This
+ is necessary to preserve ObjC ABI compatibility. */
+ tree base = build_decl (input_location,
+ FIELD_DECL, NULL_TREE, super);
+ tree field = TYPE_FIELDS (super);
+
+ while (field && TREE_CHAIN (field)
+ && TREE_CODE (TREE_CHAIN (field)) == FIELD_DECL)
+ field = TREE_CHAIN (field);
+
+ /* For ObjC ABI purposes, the "packed" size of a base class is
+ the sum of the offset and the size (in bits) of the last field
+ in the class. */
+ DECL_SIZE (base)
+ = (field && TREE_CODE (field) == FIELD_DECL
+ ? size_binop (PLUS_EXPR,
+ size_binop (PLUS_EXPR,
+ size_binop
+ (MULT_EXPR,
+ convert (bitsizetype,
+ DECL_FIELD_OFFSET (field)),
+ bitsize_int (BITS_PER_UNIT)),
+ DECL_FIELD_BIT_OFFSET (field)),
+ DECL_SIZE (field))
+ : bitsize_zero_node);
+ DECL_SIZE_UNIT (base)
+ = size_binop (FLOOR_DIV_EXPR, convert (sizetype, DECL_SIZE (base)),
+ size_int (BITS_PER_UNIT));
+ DECL_ARTIFICIAL (base) = 1;
+ DECL_ALIGN (base) = 1;
+ DECL_FIELD_CONTEXT (base) = s;
+#ifdef OBJCPLUS
+ DECL_FIELD_IS_BASE (base) = 1;
+
+ if (fields)
+ TREE_NO_WARNING (fields) = 1; /* Suppress C++ ABI warnings -- we */
+#endif /* are following the ObjC ABI here. */
+ TREE_CHAIN (base) = fields;
+ fields = base;
+ }
+
+ /* NB: Calling finish_struct() may cause type TYPE_LANG_SPECIFIC fields
+ in all variants of this RECORD_TYPE to be clobbered, but it is therein
+ that we store protocol conformance info (e.g., 'NSObject <MyProtocol>').
+ Hence, we must squirrel away the ObjC-specific information before calling
+ finish_struct(), and then reinstate it afterwards. */
+
+ for (t = TYPE_NEXT_VARIANT (s); t; t = TYPE_NEXT_VARIANT (t))
+ {
+ if (!TYPE_HAS_OBJC_INFO (t))
+ {
+ INIT_TYPE_OBJC_INFO (t);
+ TYPE_OBJC_INTERFACE (t) = klass;
+ }
+ objc_info
+ = chainon (objc_info,
+ build_tree_list (NULL_TREE, TYPE_OBJC_INFO (t)));
+ }
+
+ /* Point the struct at its related Objective-C class. */
+ INIT_TYPE_OBJC_INFO (s);
+ TYPE_OBJC_INTERFACE (s) = klass;
+
+ s = objc_finish_struct (s, fields);
+
+ for (t = TYPE_NEXT_VARIANT (s); t;
+ t = TYPE_NEXT_VARIANT (t), objc_info = TREE_CHAIN (objc_info))
+ {
+ TYPE_OBJC_INFO (t) = TREE_VALUE (objc_info);
+ /* Replace the IDENTIFIER_NODE with an actual @interface. */
+ TYPE_OBJC_INTERFACE (t) = klass;
+ }
+
+ /* Use TYPE_BINFO structures to point at the super class, if any. */
+ objc_xref_basetypes (s, super);
+
+ /* Mark this struct as a class template. */
+ CLASS_STATIC_TEMPLATE (klass) = s;
+
+ return s;
+}
+
+/* Build a type differing from TYPE only in that TYPE_VOLATILE is set.
+ Unlike tree.c:build_qualified_type(), preserve TYPE_LANG_SPECIFIC in the
+ process. */
+static tree
+objc_build_volatilized_type (tree type)
{
+ tree t;
- if (objc_is_object_ptr (type1) || objc_is_object_ptr (type2)
- || objc_is_class_name (type1) || objc_is_class_name (type2))
+ /* Check if we have not constructed the desired variant already. */
+ for (t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t))
{
- return lhd_types_compatible_p (type1, type2);
+ /* The type qualifiers must (obviously) match up. */
+ if (!TYPE_VOLATILE (t)
+ || (TYPE_READONLY (t) != TYPE_READONLY (type))
+ || (TYPE_RESTRICT (t) != TYPE_RESTRICT (type)))
+ continue;
+
+ /* For pointer types, the pointees (and hence their TYPE_LANG_SPECIFIC
+ info, if any) must match up. */
+ if (POINTER_TYPE_P (t)
+ && (TREE_TYPE (t) != TREE_TYPE (type)))
+ continue;
+
+ /* Everything matches up! */
+ return t;
}
+
+ /* Ok, we could not re-use any of the pre-existing variants. Create
+ a new one. */
+ t = build_variant_type_copy (type);
+ TYPE_VOLATILE (t) = 1;
+
+ /* Set up the canonical type information. */
+ if (TYPE_STRUCTURAL_EQUALITY_P (type))
+ SET_TYPE_STRUCTURAL_EQUALITY (t);
+ else if (TYPE_CANONICAL (type) != type)
+ TYPE_CANONICAL (t) = objc_build_volatilized_type (TYPE_CANONICAL (type));
else
+ TYPE_CANONICAL (t) = t;
+
+ return t;
+}
+
+/* Mark DECL as being 'volatile' for purposes of Darwin
+ _setjmp()/_longjmp() exception handling. Called from
+ objc_mark_locals_volatile(). */
+void
+objc_volatilize_decl (tree decl)
+{
+ /* Do not mess with variables that are 'static' or (already)
+ 'volatile'. */
+ if (!TREE_THIS_VOLATILE (decl) && !TREE_STATIC (decl)
+ && (TREE_CODE (decl) == VAR_DECL
+ || TREE_CODE (decl) == PARM_DECL))
{
-#ifdef OBJCPLUS
- return cxx_types_compatible_p (type1, type2);
-#else
- return c_types_compatible_p (type1, type2);
+ tree t = TREE_TYPE (decl);
+ struct volatilized_type key;
+ void **loc;
+
+ t = objc_build_volatilized_type (t);
+ key.type = t;
+ loc = htab_find_slot (volatilized_htab, &key, INSERT);
+
+ if (!*loc)
+ {
+ *loc = ggc_alloc (sizeof (key));
+ ((struct volatilized_type *) *loc)->type = t;
+ }
+
+ TREE_TYPE (decl) = t;
+ TREE_THIS_VOLATILE (decl) = 1;
+ TREE_SIDE_EFFECTS (decl) = 1;
+ DECL_REGISTER (decl) = 0;
+#ifndef OBJCPLUS
+ C_DECL_REGISTER (decl) = 0;
#endif
}
}
+/* Check if protocol PROTO is adopted (directly or indirectly) by class CLS
+ (including its categories and superclasses) or by object type TYP.
+ Issue a warning if PROTO is not adopted anywhere and WARN is set. */
-/* Return 1 if LHS and RHS are compatible types for assignment or
- various other operations. Return 0 if they are incompatible, and
- return -1 if we choose to not decide (because the types are really
- just C types, not ObjC specific ones). When the operation is
- REFLEXIVE (typically comparisons), check for compatibility in
- either direction; when it's not (typically assignments), don't.
+static bool
+objc_lookup_protocol (tree proto, tree cls, tree typ, bool warn)
+{
+ bool class_type = (cls != NULL_TREE);
- This function is called in two cases: when both lhs and rhs are
- pointers to records (in which case we check protocols too), and
- when both lhs and rhs are records (in which case we check class
- inheritance only).
+ while (cls)
+ {
+ tree c;
- Warnings about classes/protocols not implementing a protocol are
- emitted here (multiple of those warnings might be emitted for a
- single line!); generic warnings about incompatible assignments and
- lacks of casts in comparisons are/must be emitted by the caller if
- we return 0.
-*/
+ /* Check protocols adopted by the class and its categories. */
+ for (c = cls; c; c = CLASS_CATEGORY_LIST (c))
+ {
+ if (lookup_protocol_in_reflist (CLASS_PROTOCOL_LIST (c), proto))
+ return true;
+ }
-int
-objc_comptypes (tree lhs, tree rhs, int reflexive)
-{
- /* New clause for protocols. */
+ /* Repeat for superclasses. */
+ cls = lookup_interface (CLASS_SUPER_NAME (cls));
+ }
- /* Here we manage the case of a POINTER_TYPE = POINTER_TYPE. We only
- manage the ObjC ones, and leave the rest to the C code. */
- 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)
+ /* Check for any protocols attached directly to the object type. */
+ if (TYPE_HAS_OBJC_INFO (typ))
{
- int lhs_is_proto = IS_PROTOCOL_QUALIFIED_UNTYPED (lhs);
- int rhs_is_proto = IS_PROTOCOL_QUALIFIED_UNTYPED (rhs);
-
- if (lhs_is_proto)
- {
- tree lproto, lproto_list = TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (lhs));
- tree rproto, rproto_list;
- tree p;
+ if (lookup_protocol_in_reflist (TYPE_OBJC_PROTOCOL_LIST (typ), proto))
+ return true;
+ }
- /* <Protocol> = <Protocol> */
- if (rhs_is_proto)
- {
- /* Class <Protocol> != id <Protocol>;
- id <Protocol> != Class <Protocol> */
- if (IS_ID (lhs) != IS_ID (rhs))
- return 0;
+ if (warn)
+ {
+ *errbuf = 0;
+ gen_type_name_0 (class_type ? typ : TYPE_POINTER_TO (typ));
+ /* NB: Types 'id' and 'Class' cannot reasonably be described as
+ "implementing" a given protocol, since they do not have an
+ implementation. */
+ if (class_type)
+ warning (0, "class %qs does not implement the %qE protocol",
+ identifier_to_locale (errbuf), PROTOCOL_NAME (proto));
+ else
+ warning (0, "type %qs does not conform to the %qE protocol",
+ identifier_to_locale (errbuf), PROTOCOL_NAME (proto));
+ }
- rproto_list = TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rhs));
+ return false;
+}
- if (!reflexive)
- {
- /* An assignment between objects of type 'id
- <Protocol>'; make sure the protocol on the lhs 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);
+/* Check if class RCLS and instance struct type RTYP conform to at least the
+ same protocols that LCLS and LTYP conform to. */
- if (!rproto)
- warning
- ("object does not conform to the %qs protocol",
- IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
- }
- return 1;
- }
- else
- {
- /* Obscure case - a comparison between two objects
- of type 'id <Protocol>'. Check that either the
- protocol on the lhs is supported by the object on
- the rhs, or viceversa. */
-
- /* Check if the protocol on the lhs 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)
- {
- /* Check failed - check if the protocol on the rhs
- is supported by the object on the lhs. */
- for (rproto = rproto_list; rproto;
- rproto = TREE_CHAIN (rproto))
- {
- p = TREE_VALUE (rproto);
- lproto = lookup_protocol_in_reflist (lproto_list,
- p);
-
- if (!lproto)
- {
- /* This check failed too: incompatible */
- return 0;
- }
- }
- return 1;
- }
- }
- return 1;
- }
- }
- /* <Protocol> = <class> * */
- else if (TYPED_OBJECT (TREE_TYPE (rhs)))
- {
- tree rname = OBJC_TYPE_NAME (TREE_TYPE (rhs));
- tree rinter;
+static bool
+objc_compare_protocols (tree lcls, tree ltyp, tree rcls, tree rtyp, bool warn)
+{
+ tree p;
+ bool have_lproto = false;
- /* Class <Protocol> != <class> * */
- if (IS_CLASS (lhs))
- return 0;
+ while (lcls)
+ {
+ /* NB: We do _not_ look at categories defined for LCLS; these may or
+ may not get loaded in, and therefore it is unreasonable to require
+ that RCLS/RTYP must implement any of their protocols. */
+ for (p = CLASS_PROTOCOL_LIST (lcls); p; p = TREE_CHAIN (p))
+ {
+ have_lproto = true;
- /* 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);
+ if (!objc_lookup_protocol (TREE_VALUE (p), rcls, rtyp, warn))
+ return warn;
+ }
- while (rinter && !rproto)
- {
- tree cat;
-
- rproto_list = CLASS_PROTOCOL_LIST (rinter);
- rproto = lookup_protocol_in_reflist (rproto_list, p);
- /* If the underlying ObjC class does not have
- the protocol we're looking for, check for "one-off"
- protocols (e.g., `NSObject<MyProt> *foo;') attached
- to the rhs. */
- if (!rproto && TYPE_HAS_OBJC_INFO (TREE_TYPE (rhs)))
- {
- rproto_list = TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rhs));
- rproto = lookup_protocol_in_reflist (rproto_list, p);
- }
-
- /* 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));
- }
+ /* Repeat for superclasses. */
+ lcls = lookup_interface (CLASS_SUPER_NAME (lcls));
+ }
- if (!rproto)
- warning ("class %qs does not implement the %qs protocol",
- IDENTIFIER_POINTER (OBJC_TYPE_NAME (TREE_TYPE (rhs))),
- IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
- }
- return 1;
- }
- /* id <Protocol> = id; Class <Protocol> = id */
- else if (objc_is_object_id (TREE_TYPE (rhs)))
- {
- return 1;
- }
- /* id <Protocol> != Class; Class <Protocol> = Class */
- else if (objc_is_class_id (TREE_TYPE (rhs)))
- {
- return IS_CLASS (lhs);
- }
- /* <Protocol> = ?? : let comptypes decide. */
- return -1;
- }
- else if (rhs_is_proto)
+ /* Check for any protocols attached directly to the object type. */
+ if (TYPE_HAS_OBJC_INFO (ltyp))
+ {
+ for (p = TYPE_OBJC_PROTOCOL_LIST (ltyp); p; p = TREE_CHAIN (p))
{
- /* <class> * = <Protocol> */
- if (TYPED_OBJECT (TREE_TYPE (lhs)))
- {
- /* <class> * != Class <Protocol> */
- if (IS_CLASS (rhs))
- return 0;
+ have_lproto = true;
- if (reflexive)
- {
- tree rname = OBJC_TYPE_NAME (TREE_TYPE (lhs));
- tree rinter;
- tree rproto, rproto_list = TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rhs));
-
- /* Make sure the protocol is supported by the object on
- the lhs. */
- for (rproto = rproto_list; rproto;
- rproto = TREE_CHAIN (rproto))
- {
- tree p = TREE_VALUE (rproto);
- tree lproto = 0;
- rinter = lookup_interface (rname);
-
- while (rinter && !lproto)
- {
- tree cat;
-
- tree lproto_list = CLASS_PROTOCOL_LIST (rinter);
- lproto = lookup_protocol_in_reflist (lproto_list, p);
- /* If the underlying ObjC class does not
- have the protocol we're looking for,
- check for "one-off" protocols (e.g.,
- `NSObject<MyProt> *foo;') attached to the
- lhs. */
- if (!lproto && TYPE_HAS_OBJC_INFO (TREE_TYPE (lhs)))
- {
- lproto_list = TYPE_OBJC_PROTOCOL_LIST
- (TREE_TYPE (lhs));
- lproto = lookup_protocol_in_reflist
- (lproto_list, p);
- }
-
- /* Check for protocols adopted by categories. */
- cat = CLASS_CATEGORY_LIST (rinter);
- while (cat && !lproto)
- {
- lproto_list = CLASS_PROTOCOL_LIST (cat);
- lproto = lookup_protocol_in_reflist (lproto_list,
- p);
- cat = CLASS_CATEGORY_LIST (cat);
- }
-
- rinter = lookup_interface (CLASS_SUPER_NAME
- (rinter));
- }
-
- if (!lproto)
- warning ("class %qs does not implement the %qs protocol",
- IDENTIFIER_POINTER (OBJC_TYPE_NAME
- (TREE_TYPE (lhs))),
- IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
- }
- return 1;
- }
- else
- return 0;
- }
- /* id = id <Protocol>; id = Class <Protocol> */
- else if (objc_is_object_id (TREE_TYPE (lhs)))
- {
- return 1;
- }
- /* Class != id <Protocol>; Class = Class <Protocol> */
- else if (objc_is_class_id (TREE_TYPE (lhs)))
- {
- return IS_CLASS (rhs);
- }
- /* ??? = <Protocol> : let comptypes decide */
- else
- {
- return -1;
- }
+ if (!objc_lookup_protocol (TREE_VALUE (p), rcls, rtyp, warn))
+ return warn;
}
- else
+ }
+
+ /* NB: If LTYP and LCLS have no protocols to search for, return 'true'
+ vacuously, _unless_ RTYP is a protocol-qualified 'id'. We can get
+ away with simply checking for 'id' or 'Class' (!RCLS), since this
+ routine will not get called in other cases. */
+ return have_lproto || (rcls != NULL_TREE);
+}
+
+/* Determine if it is permissible to assign (if ARGNO is greater than -3)
+ an instance of RTYP to an instance of LTYP or to compare the two
+ (if ARGNO is equal to -3), per ObjC type system rules. Before
+ returning 'true', this routine may issue warnings related to, e.g.,
+ protocol conformance. When returning 'false', the routine must
+ produce absolutely no warnings; the C or C++ front-end will do so
+ instead, if needed. If either LTYP or RTYP is not an Objective-C type,
+ the routine must return 'false'.
+
+ The ARGNO parameter is encoded as follows:
+ >= 1 Parameter number (CALLEE contains function being called);
+ 0 Return value;
+ -1 Assignment;
+ -2 Initialization;
+ -3 Comparison (LTYP and RTYP may match in either direction). */
+
+bool
+objc_compare_types (tree ltyp, tree rtyp, int argno, tree callee)
+{
+ tree lcls, rcls, lproto, rproto;
+ bool pointers_compatible;
+
+ /* We must be dealing with pointer types */
+ if (!POINTER_TYPE_P (ltyp) || !POINTER_TYPE_P (rtyp))
+ return false;
+
+ do
+ {
+ ltyp = TREE_TYPE (ltyp); /* Remove indirections. */
+ rtyp = TREE_TYPE (rtyp);
+ }
+ while (POINTER_TYPE_P (ltyp) && POINTER_TYPE_P (rtyp));
+
+ /* Past this point, we are only interested in ObjC class instances,
+ or 'id' or 'Class'. */
+ if (TREE_CODE (ltyp) != RECORD_TYPE || TREE_CODE (rtyp) != RECORD_TYPE)
+ return false;
+
+ if (!objc_is_object_id (ltyp) && !objc_is_class_id (ltyp)
+ && !TYPE_HAS_OBJC_INFO (ltyp))
+ return false;
+
+ if (!objc_is_object_id (rtyp) && !objc_is_class_id (rtyp)
+ && !TYPE_HAS_OBJC_INFO (rtyp))
+ return false;
+
+ /* Past this point, we are committed to returning 'true' to the caller.
+ However, we can still warn about type and/or protocol mismatches. */
+
+ if (TYPE_HAS_OBJC_INFO (ltyp))
+ {
+ lcls = TYPE_OBJC_INTERFACE (ltyp);
+ lproto = TYPE_OBJC_PROTOCOL_LIST (ltyp);
+ }
+ else
+ lcls = lproto = NULL_TREE;
+
+ if (TYPE_HAS_OBJC_INFO (rtyp))
+ {
+ rcls = TYPE_OBJC_INTERFACE (rtyp);
+ rproto = TYPE_OBJC_PROTOCOL_LIST (rtyp);
+ }
+ else
+ rcls = rproto = NULL_TREE;
+
+ /* If we could not find an @interface declaration, we must have
+ only seen a @class declaration; for purposes of type comparison,
+ treat it as a stand-alone (root) class. */
+
+ if (lcls && TREE_CODE (lcls) == IDENTIFIER_NODE)
+ lcls = NULL_TREE;
+
+ if (rcls && TREE_CODE (rcls) == IDENTIFIER_NODE)
+ rcls = NULL_TREE;
+
+ /* If either type is an unqualified 'id', we're done. */
+ if ((!lproto && objc_is_object_id (ltyp))
+ || (!rproto && objc_is_object_id (rtyp)))
+ return true;
+
+ pointers_compatible = (TYPE_MAIN_VARIANT (ltyp) == TYPE_MAIN_VARIANT (rtyp));
+
+ /* If the underlying types are the same, and at most one of them has
+ a protocol list, we do not need to issue any diagnostics. */
+ if (pointers_compatible && (!lproto || !rproto))
+ return true;
+
+ /* If exactly one of the types is 'Class', issue a diagnostic; any
+ exceptions of this rule have already been handled. */
+ if (objc_is_class_id (ltyp) ^ objc_is_class_id (rtyp))
+ pointers_compatible = false;
+ /* Otherwise, check for inheritance relations. */
+ else
+ {
+ if (!pointers_compatible)
+ pointers_compatible
+ = (objc_is_object_id (ltyp) || objc_is_object_id (rtyp));
+
+ if (!pointers_compatible)
+ pointers_compatible = DERIVED_FROM_P (ltyp, rtyp);
+
+ if (!pointers_compatible && argno == -3)
+ pointers_compatible = DERIVED_FROM_P (rtyp, ltyp);
+ }
+
+ /* If the pointers match modulo protocols, check for protocol conformance
+ mismatches. */
+ if (pointers_compatible)
+ {
+ pointers_compatible = objc_compare_protocols (lcls, ltyp, rcls, rtyp,
+ argno != -3);
+
+ if (!pointers_compatible && argno == -3)
+ pointers_compatible = objc_compare_protocols (rcls, rtyp, lcls, ltyp,
+ argno != -3);
+ }
+
+ if (!pointers_compatible)
+ {
+ /* NB: For the time being, we shall make our warnings look like their
+ C counterparts. In the future, we may wish to make them more
+ ObjC-specific. */
+ switch (argno)
{
- /* Attention: we shouldn't defer to comptypes here. One bad
- side effect would be that we might loose the REFLEXIVE
- information.
- */
- lhs = TREE_TYPE (lhs);
- rhs = TREE_TYPE (rhs);
+ case -3:
+ warning (0, "comparison of distinct Objective-C types lacks a cast");
+ break;
+
+ case -2:
+ warning (0, "initialization from distinct Objective-C type");
+ break;
+
+ case -1:
+ warning (0, "assignment from distinct Objective-C type");
+ break;
+
+ case 0:
+ warning (0, "distinct Objective-C type in return");
+ break;
+
+ default:
+ warning (0, "passing argument %d of %qE from distinct "
+ "Objective-C type", argno, callee);
+ break;
}
}
- if (TREE_CODE (lhs) != RECORD_TYPE || TREE_CODE (rhs) != RECORD_TYPE)
+ return true;
+}
+
+/* Check if LTYP and RTYP have the same type qualifiers. If either type
+ lives in the volatilized hash table, ignore the 'volatile' bit when
+ making the comparison. */
+
+bool
+objc_type_quals_match (tree ltyp, tree rtyp)
+{
+ int lquals = TYPE_QUALS (ltyp), rquals = TYPE_QUALS (rtyp);
+ struct volatilized_type key;
+
+ key.type = ltyp;
+
+ if (htab_find_slot (volatilized_htab, &key, NO_INSERT))
+ lquals &= ~TYPE_QUAL_VOLATILE;
+
+ key.type = rtyp;
+
+ if (htab_find_slot (volatilized_htab, &key, NO_INSERT))
+ rquals &= ~TYPE_QUAL_VOLATILE;
+
+ return (lquals == rquals);
+}
+
+#ifndef OBJCPLUS
+/* Determine if CHILD is derived from PARENT. The routine assumes that
+ both parameters are RECORD_TYPEs, and is non-reflexive. */
+
+static bool
+objc_derived_from_p (tree parent, tree child)
+{
+ parent = TYPE_MAIN_VARIANT (parent);
+
+ for (child = TYPE_MAIN_VARIANT (child);
+ TYPE_BINFO (child) && BINFO_N_BASE_BINFOS (TYPE_BINFO (child));)
{
- /* Nothing to do with ObjC - let immediately comptypes take
- responsibility for checking. */
- return -1;
+ child = TYPE_MAIN_VARIANT (BINFO_TYPE (BINFO_BASE_BINFO
+ (TYPE_BINFO (child),
+ 0)));
+
+ if (child == parent)
+ return true;
}
- /* `id' = `<class> *' `<class> *' = `id': always allow it.
- Please note that
- 'Object *o = [[Object alloc] init]; falls
- in the case <class> * = `id'.
- */
- if ((objc_is_object_id (lhs) && TYPED_OBJECT (rhs))
- || (objc_is_object_id (rhs) && TYPED_OBJECT (lhs)))
- return 1;
+ return false;
+}
+#endif
- /* `id' = `Class', `Class' = `id' */
+static tree
+objc_build_component_ref (tree datum, tree component)
+{
+ /* If COMPONENT is NULL, the caller is referring to the anonymous
+ base class field. */
+ if (!component)
+ {
+ tree base = TYPE_FIELDS (TREE_TYPE (datum));
- else if ((objc_is_object_id (lhs) && objc_is_class_id (rhs))
- || (objc_is_class_id (lhs) && objc_is_object_id (rhs)))
- return 1;
+ return build3 (COMPONENT_REF, TREE_TYPE (base), datum, base, NULL_TREE);
+ }
- /* `Class' != `<class> *' && `<class> *' != `Class'! */
- else if ((OBJC_TYPE_NAME (lhs) == objc_class_id && TYPED_OBJECT (rhs))
- || (OBJC_TYPE_NAME (rhs) == objc_class_id && TYPED_OBJECT (lhs)))
- return 0;
+ /* The 'build_component_ref' routine has been removed from the C++
+ front-end, but 'finish_class_member_access_expr' seems to be
+ a worthy substitute. */
+#ifdef OBJCPLUS
+ return finish_class_member_access_expr (datum, component, false,
+ tf_warning_or_error);
+#else
+ return build_component_ref (input_location, datum, component);
+#endif
+}
+
+/* Recursively copy inheritance information rooted at BINFO. To do this,
+ we emulate the song and dance performed by cp/tree.c:copy_binfo(). */
+
+static tree
+objc_copy_binfo (tree binfo)
+{
+ tree btype = BINFO_TYPE (binfo);
+ tree binfo2 = make_tree_binfo (BINFO_N_BASE_BINFOS (binfo));
+ tree base_binfo;
+ int ix;
- /* `<class> *' = `<class> *' */
+ BINFO_TYPE (binfo2) = btype;
+ BINFO_OFFSET (binfo2) = BINFO_OFFSET (binfo);
+ BINFO_BASE_ACCESSES (binfo2) = BINFO_BASE_ACCESSES (binfo);
- else if (TYPED_OBJECT (lhs) && TYPED_OBJECT (rhs))
+ /* Recursively copy base binfos of BINFO. */
+ for (ix = 0; BINFO_BASE_ITERATE (binfo, ix, base_binfo); ix++)
{
- tree lname = OBJC_TYPE_NAME (lhs);
- tree rname = OBJC_TYPE_NAME (rhs);
- tree inter;
+ tree base_binfo2 = objc_copy_binfo (base_binfo);
- if (lname == rname)
- return 1;
+ BINFO_INHERITANCE_CHAIN (base_binfo2) = binfo2;
+ BINFO_BASE_APPEND (binfo2, base_binfo2);
+ }
+
+ return binfo2;
+}
+
+/* Record superclass information provided in BASETYPE for ObjC class REF.
+ This is loosely based on cp/decl.c:xref_basetypes(). */
- /* If the left hand side is a super class of the right hand side,
- allow it. */
- for (inter = lookup_interface (rname); inter;
- inter = lookup_interface (CLASS_SUPER_NAME (inter)))
- if (lname == CLASS_SUPER_NAME (inter))
- return 1;
+static void
+objc_xref_basetypes (tree ref, tree basetype)
+{
+ tree binfo = make_tree_binfo (basetype ? 1 : 0);
- /* Allow the reverse when reflexive. */
- if (reflexive)
- for (inter = lookup_interface (lname); inter;
- inter = lookup_interface (CLASS_SUPER_NAME (inter)))
- if (rname == CLASS_SUPER_NAME (inter))
- return 1;
+ TYPE_BINFO (ref) = binfo;
+ BINFO_OFFSET (binfo) = size_zero_node;
+ BINFO_TYPE (binfo) = ref;
+
+ if (basetype)
+ {
+ tree base_binfo = objc_copy_binfo (TYPE_BINFO (basetype));
- return 0;
+ BINFO_INHERITANCE_CHAIN (base_binfo) = binfo;
+ BINFO_BASE_ACCESSES (binfo) = VEC_alloc (tree, gc, 1);
+ BINFO_BASE_APPEND (binfo, base_binfo);
+ BINFO_BASE_ACCESS_APPEND (binfo, access_public_node);
}
- else
- /* Not an ObjC type - let comptypes do the check. */
- return -1;
+}
+
+static hashval_t
+volatilized_hash (const void *ptr)
+{
+ const_tree const typ = ((const struct volatilized_type *)ptr)->type;
+
+ return htab_hash_pointer(typ);
+}
+
+static int
+volatilized_eq (const void *ptr1, const void *ptr2)
+{
+ const_tree const typ1 = ((const struct volatilized_type *)ptr1)->type;
+ const_tree const typ2 = ((const struct volatilized_type *)ptr2)->type;
+
+ return typ1 == typ2;
}
/* Called from finish_decl. */
if (TREE_CODE (type) != RECORD_TYPE)
return;
if (OBJC_TYPE_NAME (type) && (type = objc_is_class_name (OBJC_TYPE_NAME (type))))
- error ("statically allocated instance of Objective-C class %qs",
- IDENTIFIER_POINTER (type));
+ error ("statically allocated instance of Objective-C class %qE",
+ type);
}
/* Construct a PROTOCOLS-qualified variant of INTERFACE, where INTERFACE may
to the pointee. */
if (is_ptr)
{
- TREE_TYPE (type) = build_variant_type_copy (TREE_TYPE (type));
+ tree orig_pointee_type = TREE_TYPE (type);
+ TREE_TYPE (type) = build_variant_type_copy (orig_pointee_type);
+
+ /* Set up the canonical type information. */
+ TYPE_CANONICAL (type)
+ = TYPE_CANONICAL (TYPE_POINTER_TO (orig_pointee_type));
+
TYPE_POINTER_TO (TREE_TYPE (type)) = type;
type = TREE_TYPE (type);
}
pp = lookup_protocol (pp);
if (pp == proto)
- fatal_error ("protocol %qs has circular dependency",
- IDENTIFIER_POINTER (PROTOCOL_NAME (pp)));
+ fatal_error ("protocol %qE has circular dependency",
+ PROTOCOL_NAME (pp));
if (pp)
check_protocol_recursively (proto, PROTOCOL_LIST (pp));
}
tree ident = TREE_VALUE (proto);
tree p = lookup_protocol (ident);
- if (!p)
- error ("cannot find protocol declaration for %qs",
- IDENTIFIER_POINTER (ident));
- else
+ if (p)
return_value = chainon (return_value,
build_tree_list (NULL_TREE, p));
+ else if (ident != error_mark_node)
+ error ("cannot find protocol declaration for %qE",
+ ident);
}
return return_value;
static tree
create_field_decl (tree type, const char *name)
{
- return build_decl (FIELD_DECL, get_identifier (name), type);
+ return build_decl (input_location,
+ FIELD_DECL, get_identifier (name), type);
}
/* Create a global, static declaration for variable NAME of a given TYPE. The
static tree
start_var_decl (tree type, const char *name)
{
- tree var = build_decl (VAR_DECL, get_identifier (name), type);
+ tree var = build_decl (input_location,
+ VAR_DECL, get_identifier (name), type);
TREE_STATIC (var) = 1;
DECL_INITIAL (var) = error_mark_node; /* A real initializer is coming... */
static void
finish_var_decl (tree var, tree initializer)
{
- finish_decl (var, initializer, NULL_TREE);
+ finish_decl (var, input_location, initializer, NULL_TREE, NULL_TREE);
/* Ensure that the variable actually gets output. */
mark_decl_referenced (var);
/* Mark the decl to avoid "defined but not used" warning. */
TREE_USED (var) = 1;
+ /* We reserve the right for the runtime to use/modify these variables
+ in ways that are opaque to us. */
+ DECL_PRESERVE_P (var) = 1;
}
/* Find the decl for the constant string class reference. This is only
/* %s in format will provide room for terminating null */
length = strlen (STRING_OBJECT_GLOBAL_FORMAT)
+ strlen (constant_string_class_name);
- name = xmalloc (length);
+ name = XNEWVEC (char, length);
sprintf (name, STRING_OBJECT_GLOBAL_FORMAT,
constant_string_class_name);
constant_string_global_id = get_identifier (name);
const struct gcc_debug_hooks *const save_hooks = debug_hooks;
/* Suppress outputting debug symbols, because
- dbxout_init hasn'r been called yet. */
+ dbxout_init hasn't been called yet. */
write_symbols = NO_DEBUG;
debug_hooks = &do_nothing_debug_hooks;
objc_object_reference = xref_tag (RECORD_TYPE, objc_object_id);
objc_class_reference = xref_tag (RECORD_TYPE, objc_class_id);
-
+
objc_object_type = build_pointer_type (objc_object_reference);
objc_class_type = build_pointer_type (objc_class_reference);
/* Declare the 'id' and 'Class' typedefs. */
- type = lang_hooks.decls.pushdecl (build_decl (TYPE_DECL,
+ type = lang_hooks.decls.pushdecl (build_decl (input_location,
+ TYPE_DECL,
objc_object_name,
objc_object_type));
- DECL_IN_SYSTEM_HEADER (type) = 1;
- type = lang_hooks.decls.pushdecl (build_decl (TYPE_DECL,
+ TREE_NO_WARNING (type) = 1;
+ type = lang_hooks.decls.pushdecl (build_decl (input_location,
+ TYPE_DECL,
objc_class_name,
objc_class_type));
- DECL_IN_SYSTEM_HEADER (type) = 1;
+ TREE_NO_WARNING (type) = 1;
/* Forward-declare '@interface Protocol'. */
objc_super_type = build_pointer_type (xref_tag (RECORD_TYPE,
get_identifier (TAG_SUPER)));
+ /* Declare pointers to method and ivar lists. */
+ objc_method_list_ptr = build_pointer_type
+ (xref_tag (RECORD_TYPE,
+ get_identifier (UTAG_METHOD_LIST)));
+ objc_method_proto_list_ptr
+ = build_pointer_type (xref_tag (RECORD_TYPE,
+ get_identifier (UTAG_METHOD_PROTOTYPE_LIST)));
+ objc_ivar_list_ptr = build_pointer_type
+ (xref_tag (RECORD_TYPE,
+ get_identifier (UTAG_IVAR_LIST)));
+
+ /* TREE_NOTHROW is cleared for the message-sending functions,
+ because the function that gets called can throw in Obj-C++, or
+ could itself call something that can throw even in Obj-C. */
+
if (flag_next_runtime)
{
/* NB: In order to call one of the ..._stret (struct-returning)
tree_cons (NULL_TREE, objc_object_type,
tree_cons (NULL_TREE, objc_selector_type,
NULL_TREE)));
- umsg_decl = builtin_function (TAG_MSGSEND,
- type, 0, NOT_BUILT_IN,
- NULL, NULL_TREE);
- umsg_nonnil_decl = builtin_function (TAG_MSGSEND_NONNIL,
- type, 0, NOT_BUILT_IN,
- NULL, NULL_TREE);
- umsg_stret_decl = builtin_function (TAG_MSGSEND_STRET,
- type, 0, NOT_BUILT_IN,
- NULL, NULL_TREE);
- umsg_nonnil_stret_decl = builtin_function (TAG_MSGSEND_NONNIL_STRET,
- type, 0, NOT_BUILT_IN,
- NULL, NULL_TREE);
+ umsg_decl = add_builtin_function (TAG_MSGSEND,
+ type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
+ umsg_nonnil_decl = add_builtin_function (TAG_MSGSEND_NONNIL,
+ type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
+ umsg_stret_decl = add_builtin_function (TAG_MSGSEND_STRET,
+ type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
+ umsg_nonnil_stret_decl = add_builtin_function (TAG_MSGSEND_NONNIL_STRET,
+ type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
+
+ /* These can throw, because the function that gets called can throw
+ in Obj-C++, or could itself call something that can throw even
+ in Obj-C. */
+ TREE_NOTHROW (umsg_decl) = 0;
+ TREE_NOTHROW (umsg_nonnil_decl) = 0;
+ TREE_NOTHROW (umsg_stret_decl) = 0;
+ TREE_NOTHROW (umsg_nonnil_stret_decl) = 0;
+
+ /* id objc_msgSend_Fast (id, SEL, ...)
+ __attribute__ ((hard_coded_address (OFFS_MSGSEND_FAST))); */
+#ifdef OFFS_MSGSEND_FAST
+ umsg_fast_decl = add_builtin_function (TAG_MSGSEND_FAST,
+ type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
+ TREE_NOTHROW (umsg_fast_decl) = 0;
+ DECL_ATTRIBUTES (umsg_fast_decl)
+ = tree_cons (get_identifier ("hard_coded_address"),
+ build_int_cst (NULL_TREE, OFFS_MSGSEND_FAST),
+ NULL_TREE);
+#else
+ /* No direct dispatch available. */
+ umsg_fast_decl = umsg_decl;
+#endif
/* id objc_msgSendSuper (struct objc_super *, SEL, ...); */
/* id objc_msgSendSuper_stret (struct objc_super *, SEL, ...); */
tree_cons (NULL_TREE, objc_super_type,
tree_cons (NULL_TREE, objc_selector_type,
NULL_TREE)));
- umsg_super_decl = builtin_function (TAG_MSGSENDSUPER,
- type, 0, NOT_BUILT_IN,
- NULL, NULL_TREE);
- umsg_super_stret_decl = builtin_function (TAG_MSGSENDSUPER_STRET,
- type, 0, NOT_BUILT_IN, 0,
- NULL_TREE);
+ umsg_super_decl = add_builtin_function (TAG_MSGSENDSUPER,
+ type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
+ umsg_super_stret_decl = add_builtin_function (TAG_MSGSENDSUPER_STRET,
+ type, 0, NOT_BUILT_IN, 0,
+ NULL_TREE);
+ TREE_NOTHROW (umsg_super_decl) = 0;
+ TREE_NOTHROW (umsg_super_stret_decl) = 0;
}
else
{
/* typedef id (*IMP)(id, SEL, ...); */
tree IMP_type
= build_pointer_type
- (build_function_type (objc_object_type,
- tree_cons (NULL_TREE, objc_object_type,
- tree_cons (NULL_TREE, objc_selector_type,
- NULL_TREE))));
+ (build_function_type (objc_object_type,
+ tree_cons (NULL_TREE, objc_object_type,
+ tree_cons (NULL_TREE, objc_selector_type,
+ NULL_TREE))));
/* IMP objc_msg_lookup (id, SEL); */
type
tree_cons (NULL_TREE, objc_object_type,
tree_cons (NULL_TREE, objc_selector_type,
OBJC_VOID_AT_END)));
- umsg_decl = builtin_function (TAG_MSGSEND,
- type, 0, NOT_BUILT_IN,
- NULL, NULL_TREE);
+ umsg_decl = add_builtin_function (TAG_MSGSEND,
+ type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
+ TREE_NOTHROW (umsg_decl) = 0;
/* IMP objc_msg_lookup_super (struct objc_super *, SEL); */
type
tree_cons (NULL_TREE, objc_super_type,
tree_cons (NULL_TREE, objc_selector_type,
OBJC_VOID_AT_END)));
- umsg_super_decl = builtin_function (TAG_MSGSENDSUPER,
- type, 0, NOT_BUILT_IN,
- NULL, NULL_TREE);
+ umsg_super_decl = add_builtin_function (TAG_MSGSENDSUPER,
+ type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
+ TREE_NOTHROW (umsg_super_decl) = 0;
/* The following GNU runtime entry point is called to initialize
each module:
= build_function_type (void_type_node,
tree_cons (NULL_TREE, ptr_type_node,
OBJC_VOID_AT_END));
- execclass_decl = builtin_function (TAG_EXECCLASS,
- type, 0, NOT_BUILT_IN,
- NULL, NULL_TREE);
+ execclass_decl = add_builtin_function (TAG_EXECCLASS,
+ type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
}
/* id objc_getClass (const char *); */
OBJC_VOID_AT_END));
objc_get_class_decl
- = builtin_function (TAG_GETCLASS, type, 0, NOT_BUILT_IN,
- NULL, NULL_TREE);
+ = add_builtin_function (TAG_GETCLASS, type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
/* id objc_getMetaClass (const char *); */
objc_get_meta_class_decl
- = builtin_function (TAG_GETMETACLASS, type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
+ = add_builtin_function (TAG_GETMETACLASS, type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
build_class_template ();
build_super_template ();
/* Pre-build the following entities - for speed/convenience. */
self_id = get_identifier ("self");
ucmd_id = get_identifier ("_cmd");
-#ifndef OBJCPLUS
- /* The C++ front-end does not appear to grok __attribute__((__unused__)). */
- unused_list = build_tree_list (get_identifier ("__unused__"), NULL_TREE);
-#endif
#ifdef OBJCPLUS
pop_lang_context ();
static int
check_string_class_template (void)
{
- tree field_decl = TYPE_FIELDS (constant_string_type);
+ tree field_decl = objc_get_class_ivars (constant_string_id);
#define AT_LEAST_AS_LARGE_AS(F, T) \
(F && TREE_CODE (F) == FIELD_DECL \
- && (TREE_INT_CST_LOW (DECL_SIZE (F)) \
+ && (TREE_INT_CST_LOW (TYPE_SIZE (TREE_TYPE (F))) \
>= TREE_INT_CST_LOW (TYPE_SIZE (T))))
if (!AT_LEAST_AS_LARGE_AS (field_decl, ptr_type_node))
/* Avoid calling `check_string_class_template ()' more than once. */
static GTY(()) int string_layout_checked;
+/* Construct an internal string layout to be used as a template for
+ creating NSConstantString/NXConstantString instances. */
+
+static tree
+objc_build_internal_const_str_type (void)
+{
+ tree type = (*lang_hooks.types.make_type) (RECORD_TYPE);
+ tree fields = build_decl (input_location,
+ FIELD_DECL, NULL_TREE, ptr_type_node);
+ tree field = build_decl (input_location,
+ FIELD_DECL, NULL_TREE, ptr_type_node);
+
+ TREE_CHAIN (field) = fields; fields = field;
+ field = build_decl (input_location,
+ FIELD_DECL, NULL_TREE, unsigned_type_node);
+ TREE_CHAIN (field) = fields; fields = field;
+ /* NB: The finish_builtin_struct() routine expects FIELD_DECLs in
+ reverse order! */
+ finish_builtin_struct (type, "__builtin_ObjCString",
+ fields, NULL_TREE);
+
+ return type;
+}
+
/* Custom build_string which sets TREE_TYPE! */
static tree
return fix_string_type (build_string (len, str));
}
+/* Build a string with contents STR and length LEN and convert it to a
+ pointer. */
+
+static tree
+my_build_string_pointer (int len, const char *str)
+{
+ tree string = my_build_string (len, str);
+ tree ptrtype = build_pointer_type (TREE_TYPE (TREE_TYPE (string)));
+ return build1 (ADDR_EXPR, ptrtype, string);
+}
static hashval_t
string_hash (const void *ptr)
{
- tree str = ((struct string_descriptor *)ptr)->literal;
+ const_tree const str = ((const struct string_descriptor *)ptr)->literal;
const unsigned char *p = (const unsigned char *) TREE_STRING_POINTER (str);
int i, len = TREE_STRING_LENGTH (str);
hashval_t h = len;
static int
string_eq (const void *ptr1, const void *ptr2)
{
- tree str1 = ((struct string_descriptor *)ptr1)->literal;
- tree str2 = ((struct string_descriptor *)ptr2)->literal;
+ const_tree const str1 = ((const struct string_descriptor *)ptr1)->literal;
+ const_tree const str2 = ((const struct string_descriptor *)ptr2)->literal;
int len1 = TREE_STRING_LENGTH (str1);
return (len1 == TREE_STRING_LENGTH (str2)
{
string_layout_checked = -1;
constant_string_class = lookup_interface (constant_string_id);
+ internal_const_str_type = objc_build_internal_const_str_type ();
if (!constant_string_class
|| !(constant_string_type
= CLASS_STATIC_TEMPLATE (constant_string_class)))
- error ("cannot find interface declaration for %qs",
- IDENTIFIER_POINTER (constant_string_id));
+ error ("cannot find interface declaration for %qE",
+ constant_string_id);
/* The NSConstantString/NXConstantString ivar layout is now known. */
else if (!check_string_class_template ())
- error ("interface %qs does not have valid constant string layout",
- IDENTIFIER_POINTER (constant_string_id));
+ error ("interface %qE does not have valid constant string layout",
+ constant_string_id);
/* For the NeXT runtime, we can generate a literal reference
to the string class, don't need to run a constructor. */
else if (flag_next_runtime && !setup_string_decl ())
- error ("cannot find reference tag for class %qs",
- IDENTIFIER_POINTER (constant_string_id));
+ error ("cannot find reference tag for class %qE",
+ constant_string_id);
else
{
string_layout_checked = 1; /* Success! */
/* Perhaps we already constructed a constant string just like this one? */
key.literal = string;
loc = htab_find_slot (string_htab, &key, INSERT);
- desc = *loc;
+ desc = (struct string_descriptor *) *loc;
if (!desc)
{
tree var;
- *loc = desc = ggc_alloc (sizeof (*desc));
+ *loc = desc = GGC_NEW (struct string_descriptor);
desc->literal = string;
- /* GNU: & ((NXConstantString) { NULL, string, length }) */
- /* NeXT: & ((NSConstantString) { isa, string, length }) */
- fields = TYPE_FIELDS (constant_string_type);
+ /* GNU: (NXConstantString *) & ((__builtin_ObjCString) { NULL, string, length }) */
+ /* NeXT: (NSConstantString *) & ((__builtin_ObjCString) { isa, string, length }) */
+ fields = TYPE_FIELDS (internal_const_str_type);
initlist
= build_tree_list (fields,
flag_next_runtime
- ? build_unary_op (ADDR_EXPR, string_class_decl, 0)
+ ? build_unary_op (input_location,
+ ADDR_EXPR, string_class_decl, 0)
: build_int_cst (NULL_TREE, 0));
fields = TREE_CHAIN (fields);
- initlist = tree_cons (fields, build_unary_op (ADDR_EXPR, string, 1),
+ initlist = tree_cons (fields, build_unary_op (input_location,
+ ADDR_EXPR, string, 1),
initlist);
fields = TREE_CHAIN (fields);
initlist = tree_cons (fields, build_int_cst (NULL_TREE, length),
initlist);
- constructor = objc_build_constructor (constant_string_type,
+ constructor = objc_build_constructor (internal_const_str_type,
nreverse (initlist));
- TREE_INVARIANT (constructor) = true;
if (!flag_next_runtime)
constructor
= objc_add_static_instance (constructor, constant_string_type);
else
{
- var = build_decl (CONST_DECL, NULL, TREE_TYPE (constructor));
+ var = build_decl (input_location,
+ CONST_DECL, NULL, TREE_TYPE (constructor));
DECL_INITIAL (var) = constructor;
TREE_STATIC (var) = 1;
pushdecl_top_level (var);
desc->constructor = constructor;
}
- addr = build_unary_op (ADDR_EXPR, desc->constructor, 1);
+ addr = convert (build_pointer_type (constant_string_type),
+ build_unary_op (input_location,
+ ADDR_EXPR, desc->constructor, 1));
return addr;
}
}
sprintf (buf, "_OBJC_INSTANCE_%d", num_static_inst++);
- decl = build_decl (VAR_DECL, get_identifier (buf), class_decl);
- DECL_COMMON (decl) = 1;
+ decl = build_decl (input_location,
+ VAR_DECL, get_identifier (buf), class_decl);
TREE_STATIC (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
+ TREE_USED (decl) = 1;
DECL_INITIAL (decl) = constructor;
/* We may be writing something else just now.
static tree
objc_build_constructor (tree type, tree elts)
{
- tree constructor = build_constructor (type, elts);
+ tree constructor = build_constructor_from_list (type, elts);
TREE_CONSTANT (constructor) = 1;
TREE_STATIC (constructor) = 1;
/* Adjust for impedance mismatch. We should figure out how to build
CONSTRUCTORs that consistently please both the C and C++ gods. */
if (!TREE_PURPOSE (elts))
- TREE_TYPE (constructor) = NULL_TREE;
- TREE_HAS_CONSTRUCTOR (constructor) = 1;
+ TREE_TYPE (constructor) = init_list_type_node;
#endif
return constructor;
{
tree field_decl, field_decl_chain;
- objc_symtab_template
- = start_struct (RECORD_TYPE, get_identifier (UTAG_SYMTAB));
+ objc_symtab_template = objc_start_struct (get_identifier (UTAG_SYMTAB));
/* long sel_ref_cnt; */
field_decl = create_field_decl (long_integer_type_node, "sel_ref_cnt");
chainon (field_decl_chain, field_decl);
}
- finish_struct (objc_symtab_template, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_symtab_template, field_decl_chain);
}
/* Create the initial value for the `defs' field of _objc_symtab.
{
if (TREE_CODE (impent->imp_context) == CLASS_IMPLEMENTATION_TYPE)
{
- expr = build_unary_op (ADDR_EXPR, impent->class_decl, 0);
+ expr = build_unary_op (input_location,
+ ADDR_EXPR, impent->class_decl, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
}
{
if (TREE_CODE (impent->imp_context) == CATEGORY_IMPLEMENTATION_TYPE)
{
- expr = build_unary_op (ADDR_EXPR, impent->class_decl, 0);
+ expr = build_unary_op (input_location,
+ ADDR_EXPR, impent->class_decl, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
}
tree expr;
if (static_instances_decl)
- expr = build_unary_op (ADDR_EXPR, static_instances_decl, 0);
+ expr = build_unary_op (input_location,
+ ADDR_EXPR, static_instances_decl, 0);
else
expr = build_int_cst (NULL_TREE, 0);
initlist
= tree_cons (NULL_TREE,
convert (build_pointer_type (objc_selector_type),
- build_unary_op (ADDR_EXPR,
+ build_unary_op (input_location, ADDR_EXPR,
UOBJC_SELECTOR_TABLE_decl, 1)),
initlist);
size_in_bytes (objc_module_template));
initlist = tree_cons (NULL_TREE, expr, initlist);
- /* name = { ..., "foo.m", ... } */
+ /* Don't provide any file name for security reasons. */
+ /* name = { ..., "", ... } */
- expr = add_objc_string (get_identifier (input_filename), class_names);
+ expr = add_objc_string (get_identifier (""), class_names);
initlist = tree_cons (NULL_TREE, expr, initlist);
/* symtab = { ..., _OBJC_SYMBOLS, ... } */
if (UOBJC_SYMBOLS_decl)
- expr = build_unary_op (ADDR_EXPR, UOBJC_SYMBOLS_decl, 0);
+ expr = build_unary_op (input_location,
+ ADDR_EXPR, UOBJC_SYMBOLS_decl, 0);
else
expr = build_int_cst (NULL_TREE, 0);
initlist = tree_cons (NULL_TREE, expr, initlist);
push_lang_context (lang_name_c); /* extern "C" */
#endif
- objc_module_template
- = start_struct (RECORD_TYPE, get_identifier (UTAG_MODULE));
+ objc_module_template = objc_start_struct (get_identifier (UTAG_MODULE));
/* long version; */
field_decl = create_field_decl (long_integer_type_node, "version");
"symtab");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_module_template, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_module_template, field_decl_chain);
/* Create an instance of "_objc_module". */
UOBJC_MODULES_decl = start_var_decl (objc_module_template, "_OBJC_MODULES");
static void __objc_gnu_init (void) {
__objc_exec_class (&L_OBJC_MODULES);
- } */
+ } */
static void
build_module_initializer_routine (void)
#ifdef OBJCPLUS
push_lang_context (lang_name_c); /* extern "C" */
-#endif
+#endif
- objc_push_parm (build_decl (PARM_DECL, NULL_TREE, void_type_node));
+ objc_push_parm (build_decl (input_location,
+ PARM_DECL, NULL_TREE, void_type_node));
objc_start_function (get_identifier (TAG_GNUINIT),
build_function_type (void_type_node,
OBJC_VOID_AT_END),
body = c_begin_compound_stmt (true);
add_stmt (build_function_call
- (execclass_decl,
+ (input_location,
+ execclass_decl,
build_tree_list
(NULL_TREE,
- build_unary_op (ADDR_EXPR,
+ build_unary_op (input_location, ADDR_EXPR,
UOBJC_MODULES_decl, 0))));
- add_stmt (c_end_compound_stmt (body, true));
+ add_stmt (c_end_compound_stmt (input_location, body, true));
TREE_PUBLIC (current_function_decl) = 0;
tree
objc_generate_static_init_call (tree ctors ATTRIBUTE_UNUSED)
{
- add_stmt (build_stmt (EXPR_STMT,
- build_function_call (GNU_INIT_decl, NULL_TREE)));
+ add_stmt (build_stmt (input_location, EXPR_STMT,
+ build_function_call (input_location,
+ GNU_INIT_decl, NULL_TREE)));
return ctors;
}
generate_static_references (void)
{
tree decls = NULL_TREE, expr = NULL_TREE;
- tree class_name, class, decl, initlist;
+ tree class_name, klass, decl, initlist;
tree cl_chain, in_chain, type
= build_array_type (build_pointer_type (void_type_node), NULL_TREE);
int num_inst, num_class;
decl = start_var_decl (type, buf);
/* Output {class_name, ...}. */
- class = TREE_VALUE (cl_chain);
- class_name = get_objc_string_decl (OBJC_TYPE_NAME (class), class_names);
+ klass = TREE_VALUE (cl_chain);
+ class_name = get_objc_string_decl (OBJC_TYPE_NAME (klass), class_names);
initlist = build_tree_list (NULL_TREE,
- build_unary_op (ADDR_EXPR, class_name, 1));
+ build_unary_op (input_location,
+ ADDR_EXPR, class_name, 1));
/* Output {..., instance, ...}. */
for (in_chain = TREE_PURPOSE (cl_chain);
in_chain; in_chain = TREE_CHAIN (in_chain))
{
- expr = build_unary_op (ADDR_EXPR, TREE_VALUE (in_chain), 1);
+ expr = build_unary_op (input_location,
+ ADDR_EXPR, TREE_VALUE (in_chain), 1);
initlist = tree_cons (NULL_TREE, expr, initlist);
}
expr = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist));
finish_var_decl (decl, expr);
decls
- = tree_cons (NULL_TREE, build_unary_op (ADDR_EXPR, decl, 1), decls);
+ = tree_cons (NULL_TREE, build_unary_op (input_location,
+ ADDR_EXPR, decl, 1), decls);
}
decls = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), decls);
finish_var_decl (static_instances_decl, expr);
}
-/* Output all strings. */
-
-static void
-generate_strings (void)
-{
- tree chain, string_expr;
- tree string, decl, type;
-
- for (chain = class_names_chain; chain; chain = TREE_CHAIN (chain))
- {
- string = TREE_VALUE (chain);
- decl = TREE_PURPOSE (chain);
- type = build_array_type
- (char_type_node,
- build_index_type
- (build_int_cst (NULL_TREE,
- IDENTIFIER_LENGTH (string))));
- decl = start_var_decl (type, IDENTIFIER_POINTER (DECL_NAME (decl)));
- string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
- IDENTIFIER_POINTER (string));
- finish_var_decl (decl, string_expr);
- }
-
- for (chain = meth_var_names_chain; chain; chain = TREE_CHAIN (chain))
- {
- string = TREE_VALUE (chain);
- decl = TREE_PURPOSE (chain);
- type = build_array_type
- (char_type_node,
- build_index_type
- (build_int_cst (NULL_TREE,
- IDENTIFIER_LENGTH (string))));
- decl = start_var_decl (type, IDENTIFIER_POINTER (DECL_NAME (decl)));
- string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
- IDENTIFIER_POINTER (string));
- finish_var_decl (decl, string_expr);
- }
-
- for (chain = meth_var_types_chain; chain; chain = TREE_CHAIN (chain))
- {
- string = TREE_VALUE (chain);
- decl = TREE_PURPOSE (chain);
- type = build_array_type
- (char_type_node,
- build_index_type
- (build_int_cst (NULL_TREE,
- IDENTIFIER_LENGTH (string))));
- decl = start_var_decl (type, IDENTIFIER_POINTER (DECL_NAME (decl)));
- string_expr = my_build_string (IDENTIFIER_LENGTH (string) + 1,
- IDENTIFIER_POINTER (string));
- finish_var_decl (decl, string_expr);
- }
-}
-
static GTY(()) int selector_reference_idx;
static tree
}
if (!found)
{
- location_t *loc;
+ location_t loc;
if (flag_next_runtime && TREE_PURPOSE (chain))
- loc = &DECL_SOURCE_LOCATION (TREE_PURPOSE (chain));
+ loc = DECL_SOURCE_LOCATION (TREE_PURPOSE (chain));
else
- loc = &input_location;
- warning ("%Hcreating selector for nonexistent method %qE",
- loc, TREE_VALUE (chain));
+ loc = input_location;
+ warning_at (loc, 0, "creating selector for nonexistent method %qE",
+ TREE_VALUE (chain));
}
}
tree_cons (NULL_TREE,
build_int_cst (NULL_TREE, 0),
tree_cons (NULL_TREE,
- build_int_cst (NULL_TREE, 0),
+ build_int_cst (NULL_TREE, 0),
NULL_TREE)))
: build_int_cst (NULL_TREE, 0), initlist);
initlist = objc_build_constructor (TREE_TYPE (UOBJC_SELECTOR_TABLE_decl),
}
/* sel_ref_chain is a list whose "value" fields will be instances of
- identifier_node that represent the selector. */
+ identifier_node that represent the selector. LOC is the location of
+ the @selector. */
static tree
-build_typed_selector_reference (tree ident, tree prototype)
+build_typed_selector_reference (location_t loc, tree ident, tree prototype)
{
tree *chain = &sel_ref_chain;
tree expr;
*chain = tree_cons (prototype, ident, NULL_TREE);
return_at_index:
- expr = build_unary_op (ADDR_EXPR,
- build_array_ref (UOBJC_SELECTOR_TABLE_decl,
+ expr = build_unary_op (loc, ADDR_EXPR,
+ build_array_ref (loc, UOBJC_SELECTOR_TABLE_decl,
build_int_cst (NULL_TREE, index)),
1);
return convert (objc_selector_type, expr);
}
static tree
-build_selector_reference (tree ident)
+build_selector_reference (location_t loc, tree ident)
{
tree *chain = &sel_ref_chain;
tree expr;
if (TREE_VALUE (*chain) == ident)
return (flag_next_runtime
? TREE_PURPOSE (*chain)
- : build_array_ref (UOBJC_SELECTOR_TABLE_decl,
+ : build_array_ref (loc, UOBJC_SELECTOR_TABLE_decl,
build_int_cst (NULL_TREE, index)));
index++;
return (flag_next_runtime
? expr
- : build_array_ref (UOBJC_SELECTOR_TABLE_decl,
+ : build_array_ref (loc, UOBJC_SELECTOR_TABLE_decl,
build_int_cst (NULL_TREE, index)));
}
tree
objc_get_class_reference (tree ident)
{
- tree orig_ident;
+ tree orig_ident = (DECL_P (ident)
+ ? DECL_NAME (ident)
+ : TYPE_P (ident)
+ ? OBJC_TYPE_NAME (ident)
+ : ident);
+ bool local_scope = false;
#ifdef OBJCPLUS
if (processing_template_decl)
/* Must wait until template instantiation time. */
return build_min_nt (CLASS_REFERENCE_EXPR, ident);
+#endif
+
if (TREE_CODE (ident) == TYPE_DECL)
- ident = DECL_NAME (ident);
+ ident = (DECL_ORIGINAL_TYPE (ident)
+ ? DECL_ORIGINAL_TYPE (ident)
+ : TREE_TYPE (ident));
+
+#ifdef OBJCPLUS
+ if (TYPE_P (ident) && TYPE_CONTEXT (ident)
+ && TYPE_CONTEXT (ident) != global_namespace)
+ local_scope = true;
#endif
- orig_ident = ident;
- if (!(ident = objc_is_class_name (ident)))
+ if (local_scope || !(ident = objc_is_class_name (ident)))
{
- error ("%qs is not an Objective-C class name or alias",
- IDENTIFIER_POINTER (orig_ident));
+ error ("%qE is not an Objective-C class name or alias",
+ orig_ident);
return error_mark_node;
}
add_class_reference (ident);
params = build_tree_list (NULL_TREE,
- my_build_string (IDENTIFIER_LENGTH (ident) + 1,
- IDENTIFIER_POINTER (ident)));
+ my_build_string_pointer
+ (IDENTIFIER_LENGTH (ident) + 1,
+ IDENTIFIER_POINTER (ident)));
assemble_external (objc_get_class_decl);
- return build_function_call (objc_get_class_decl, params);
+ return build_function_call (input_location, objc_get_class_decl, params);
}
}
static tree
add_objc_string (tree ident, enum string_section section)
{
- tree *chain, decl;
+ tree *chain, decl, type, string_expr;
if (section == class_names)
chain = &class_names_chain;
{
if (TREE_VALUE (*chain) == ident)
return convert (string_type_node,
- build_unary_op (ADDR_EXPR, TREE_PURPOSE (*chain), 1));
+ build_unary_op (input_location,
+ ADDR_EXPR, TREE_PURPOSE (*chain), 1));
chain = &TREE_CHAIN (*chain);
}
decl = build_objc_string_decl (section);
+ type = build_array_type
+ (char_type_node,
+ build_index_type
+ (build_int_cst (NULL_TREE,
+ IDENTIFIER_LENGTH (ident))));
+ decl = start_var_decl (type, IDENTIFIER_POINTER (DECL_NAME (decl)));
+ string_expr = my_build_string (IDENTIFIER_LENGTH (ident) + 1,
+ IDENTIFIER_POINTER (ident));
+ finish_var_decl (decl, string_expr);
+
*chain = tree_cons (decl, ident, NULL_TREE);
- return convert (string_type_node, build_unary_op (ADDR_EXPR, decl, 1));
+ return convert (string_type_node, build_unary_op (input_location,
+ ADDR_EXPR, decl, 1));
}
static GTY(()) int class_names_idx;
ident = get_identifier (buf);
- decl = build_decl (VAR_DECL, ident, build_array_type (char_type_node, 0));
+ decl = build_decl (input_location,
+ VAR_DECL, ident, build_array_type (char_type_node, 0));
DECL_EXTERNAL (decl) = 1;
TREE_PUBLIC (decl) = 0;
TREE_USED (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
#ifdef OBJCPLUS
DECL_THIS_STATIC (decl) = 1; /* squash redeclaration errors */
-#endif
+#endif
make_decl_rtl (decl);
pushdecl_top_level (decl);
#endif /* OBJCPLUS */
if (!(underlying_class = objc_is_class_name (class_ident)))
- warning ("cannot find class %qs", IDENTIFIER_POINTER (class_ident));
+ warning (0, "cannot find class %qE", class_ident);
else if (objc_is_class_name (alias_ident))
- warning ("class %qs already exists", IDENTIFIER_POINTER (alias_ident));
+ warning (0, "class %qE already exists", alias_ident);
else
- alias_chain = tree_cons (underlying_class, alias_ident, alias_chain);
+ {
+ /* Implement @compatibility_alias as a typedef. */
+#ifdef OBJCPLUS
+ push_lang_context (lang_name_c); /* extern "C" */
+#endif
+ lang_hooks.decls.pushdecl (build_decl
+ (input_location,
+ TYPE_DECL,
+ alias_ident,
+ xref_tag (RECORD_TYPE, underlying_class)));
+#ifdef OBJCPLUS
+ pop_lang_context ();
+#endif
+ alias_chain = tree_cons (underlying_class, alias_ident, alias_chain);
+ }
}
void
if (!TYPE_HAS_OBJC_INFO (type)
|| !TYPE_OBJC_INTERFACE (type))
{
- error ("%qs redeclared as different kind of symbol",
- IDENTIFIER_POINTER (ident));
- error ("%Jprevious declaration of '%D'",
- record, record);
+ error ("%qE redeclared as different kind of symbol",
+ ident);
+ error ("previous declaration of %q+D",
+ record);
}
}
return (objc_object_type && type
&& (IS_ID (type) || IS_CLASS (type) || IS_SUPER (type))
? type
- : NULL_TREE);
+ : NULL_TREE);
}
/* Check whether TYPE is either 'id', 'Class', or a pointer to an ObjC
return ret;
}
+static int
+objc_is_gcable_type (tree type, int or_strong_p)
+{
+ tree name;
+
+ if (!TYPE_P (type))
+ return 0;
+ if (objc_is_id (TYPE_MAIN_VARIANT (type)))
+ return 1;
+ if (or_strong_p && lookup_attribute ("objc_gc", TYPE_ATTRIBUTES (type)))
+ return 1;
+ if (TREE_CODE (type) != POINTER_TYPE && TREE_CODE (type) != INDIRECT_REF)
+ return 0;
+ type = TREE_TYPE (type);
+ if (TREE_CODE (type) != RECORD_TYPE)
+ return 0;
+ name = TYPE_NAME (type);
+ return (objc_is_class_name (name) != NULL_TREE);
+}
+
static tree
-lookup_interface (tree ident)
+objc_substitute_decl (tree expr, tree oldexpr, tree newexpr)
+{
+ if (expr == oldexpr)
+ return newexpr;
+
+ switch (TREE_CODE (expr))
+ {
+ case COMPONENT_REF:
+ return objc_build_component_ref
+ (objc_substitute_decl (TREE_OPERAND (expr, 0),
+ oldexpr,
+ newexpr),
+ DECL_NAME (TREE_OPERAND (expr, 1)));
+ case ARRAY_REF:
+ return build_array_ref (input_location,
+ objc_substitute_decl (TREE_OPERAND (expr, 0),
+ oldexpr,
+ newexpr),
+ TREE_OPERAND (expr, 1));
+ case INDIRECT_REF:
+ return build_indirect_ref (input_location,
+ objc_substitute_decl (TREE_OPERAND (expr, 0),
+ oldexpr,
+ newexpr), RO_ARROW);
+ default:
+ return expr;
+ }
+}
+
+static tree
+objc_build_ivar_assignment (tree outervar, tree lhs, tree rhs)
{
- tree chain;
+ tree func_params;
+ /* The LHS parameter contains the expression 'outervar->memberspec';
+ we need to transform it into '&((typeof(outervar) *) 0)->memberspec',
+ where memberspec may be arbitrarily complex (e.g., 'g->f.d[2].g[3]').
+ */
+ tree offs
+ = objc_substitute_decl
+ (lhs, outervar, convert (TREE_TYPE (outervar), integer_zero_node));
+ tree func
+ = (flag_objc_direct_dispatch
+ ? objc_assign_ivar_fast_decl
+ : objc_assign_ivar_decl);
+
+ offs = convert (integer_type_node, build_unary_op (input_location,
+ ADDR_EXPR, offs, 0));
+ offs = fold (offs);
+ func_params = tree_cons (NULL_TREE,
+ convert (objc_object_type, rhs),
+ tree_cons (NULL_TREE, convert (objc_object_type, outervar),
+ tree_cons (NULL_TREE, offs,
+ NULL_TREE)));
+
+ assemble_external (func);
+ return build_function_call (input_location, func, func_params);
+}
+
+static tree
+objc_build_global_assignment (tree lhs, tree rhs)
+{
+ tree func_params = tree_cons (NULL_TREE,
+ convert (objc_object_type, rhs),
+ tree_cons (NULL_TREE, convert (build_pointer_type (objc_object_type),
+ build_unary_op (input_location, ADDR_EXPR, lhs, 0)),
+ NULL_TREE));
+
+ assemble_external (objc_assign_global_decl);
+ return build_function_call (input_location,
+ objc_assign_global_decl, func_params);
+}
+
+static tree
+objc_build_strong_cast_assignment (tree lhs, tree rhs)
+{
+ tree func_params = tree_cons (NULL_TREE,
+ convert (objc_object_type, rhs),
+ tree_cons (NULL_TREE, convert (build_pointer_type (objc_object_type),
+ build_unary_op (input_location, ADDR_EXPR, lhs, 0)),
+ NULL_TREE));
+
+ assemble_external (objc_assign_strong_cast_decl);
+ return build_function_call (input_location,
+ objc_assign_strong_cast_decl, func_params);
+}
+
+static int
+objc_is_gcable_p (tree expr)
+{
+ return (TREE_CODE (expr) == COMPONENT_REF
+ ? objc_is_gcable_p (TREE_OPERAND (expr, 1))
+ : TREE_CODE (expr) == ARRAY_REF
+ ? (objc_is_gcable_p (TREE_TYPE (expr))
+ || objc_is_gcable_p (TREE_OPERAND (expr, 0)))
+ : TREE_CODE (expr) == ARRAY_TYPE
+ ? objc_is_gcable_p (TREE_TYPE (expr))
+ : TYPE_P (expr)
+ ? objc_is_gcable_type (expr, 1)
+ : (objc_is_gcable_p (TREE_TYPE (expr))
+ || (DECL_P (expr)
+ && lookup_attribute ("objc_gc", DECL_ATTRIBUTES (expr)))));
+}
+
+static int
+objc_is_ivar_reference_p (tree expr)
+{
+ return (TREE_CODE (expr) == ARRAY_REF
+ ? objc_is_ivar_reference_p (TREE_OPERAND (expr, 0))
+ : TREE_CODE (expr) == COMPONENT_REF
+ ? TREE_CODE (TREE_OPERAND (expr, 1)) == FIELD_DECL
+ : 0);
+}
+
+static int
+objc_is_global_reference_p (tree expr)
+{
+ return (TREE_CODE (expr) == INDIRECT_REF || TREE_CODE (expr) == PLUS_EXPR
+ ? objc_is_global_reference_p (TREE_OPERAND (expr, 0))
+ : DECL_P (expr)
+ ? (!DECL_CONTEXT (expr) || TREE_STATIC (expr))
+ : 0);
+}
+
+tree
+objc_generate_write_barrier (tree lhs, enum tree_code modifycode, tree rhs)
+{
+ tree result = NULL_TREE, outer;
+ int strong_cast_p = 0, outer_gc_p = 0, indirect_p = 0;
+
+ /* See if we have any lhs casts, and strip them out. NB: The lvalue casts
+ will have been transformed to the form '*(type *)&expr'. */
+ if (TREE_CODE (lhs) == INDIRECT_REF)
+ {
+ outer = TREE_OPERAND (lhs, 0);
+
+ while (!strong_cast_p
+ && (CONVERT_EXPR_P (outer)
+ || TREE_CODE (outer) == NON_LVALUE_EXPR))
+ {
+ tree lhstype = TREE_TYPE (outer);
+ /* Descend down the cast chain, and record the first objc_gc
+ attribute found. */
+ if (POINTER_TYPE_P (lhstype))
+ {
+ tree attr
+ = lookup_attribute ("objc_gc",
+ TYPE_ATTRIBUTES (TREE_TYPE (lhstype)));
+
+ if (attr)
+ strong_cast_p = 1;
+ }
+
+ outer = TREE_OPERAND (outer, 0);
+ }
+ }
+
+ /* If we have a __strong cast, it trumps all else. */
+ if (strong_cast_p)
+ {
+ if (modifycode != NOP_EXPR)
+ goto invalid_pointer_arithmetic;
+
+ if (warn_assign_intercept)
+ warning (0, "strong-cast assignment has been intercepted");
+
+ result = objc_build_strong_cast_assignment (lhs, rhs);
+
+ goto exit_point;
+ }
+
+ /* the lhs must be of a suitable type, regardless of its underlying
+ structure. */
+ if (!objc_is_gcable_p (lhs))
+ goto exit_point;
+
+ outer = lhs;
+
+ while (outer
+ && (TREE_CODE (outer) == COMPONENT_REF
+ || TREE_CODE (outer) == ARRAY_REF))
+ outer = TREE_OPERAND (outer, 0);
+
+ if (TREE_CODE (outer) == INDIRECT_REF)
+ {
+ outer = TREE_OPERAND (outer, 0);
+ indirect_p = 1;
+ }
+
+ outer_gc_p = objc_is_gcable_p (outer);
+
+ /* Handle ivar assignments. */
+ if (objc_is_ivar_reference_p (lhs))
+ {
+ /* if the struct to the left of the ivar is not an Objective-C object (__strong
+ doesn't cut it here), the best we can do here is suggest a cast. */
+ if (!objc_is_gcable_type (TREE_TYPE (outer), 0))
+ {
+ /* We may still be able to use the global write barrier... */
+ if (!indirect_p && objc_is_global_reference_p (outer))
+ goto global_reference;
+
+ suggest_cast:
+ if (modifycode == NOP_EXPR)
+ {
+ if (warn_assign_intercept)
+ warning (0, "strong-cast may possibly be needed");
+ }
+
+ goto exit_point;
+ }
+
+ if (modifycode != NOP_EXPR)
+ goto invalid_pointer_arithmetic;
+
+ if (warn_assign_intercept)
+ warning (0, "instance variable assignment has been intercepted");
+
+ result = objc_build_ivar_assignment (outer, lhs, rhs);
+
+ goto exit_point;
+ }
+
+ /* Likewise, intercept assignment to global/static variables if their type is
+ GC-marked. */
+ if (objc_is_global_reference_p (outer))
+ {
+ if (indirect_p)
+ goto suggest_cast;
+
+ global_reference:
+ if (modifycode != NOP_EXPR)
+ {
+ invalid_pointer_arithmetic:
+ if (outer_gc_p)
+ warning (0, "pointer arithmetic for garbage-collected objects not allowed");
+
+ goto exit_point;
+ }
+
+ if (warn_assign_intercept)
+ warning (0, "global/static variable assignment has been intercepted");
+
+ result = objc_build_global_assignment (lhs, rhs);
+ }
+
+ /* In all other cases, fall back to the normal mechanism. */
+ exit_point:
+ return result;
+}
+
+struct GTY(()) interface_tuple {
+ tree id;
+ tree class_name;
+};
+
+static GTY ((param_is (struct interface_tuple))) htab_t interface_htab;
+
+static hashval_t
+hash_interface (const void *p)
+{
+ const struct interface_tuple *d = (const struct interface_tuple *) p;
+ return IDENTIFIER_HASH_VALUE (d->id);
+}
+
+static int
+eq_interface (const void *p1, const void *p2)
+{
+ const struct interface_tuple *d = (const struct interface_tuple *) p1;
+ return d->id == p2;
+}
+
+static tree
+lookup_interface (tree ident)
+{
#ifdef OBJCPLUS
if (ident && TREE_CODE (ident) == TYPE_DECL)
ident = DECL_NAME (ident);
#endif
- for (chain = interface_chain; chain; chain = TREE_CHAIN (chain))
- {
- if (ident == CLASS_NAME (chain))
- return chain;
- }
- return NULL_TREE;
+
+ if (ident == NULL_TREE || TREE_CODE (ident) != IDENTIFIER_NODE)
+ return NULL_TREE;
+
+ {
+ struct interface_tuple **slot;
+ tree i = NULL_TREE;
+
+ if (interface_htab)
+ {
+ slot = (struct interface_tuple **)
+ htab_find_slot_with_hash (interface_htab, ident,
+ IDENTIFIER_HASH_VALUE (ident),
+ NO_INSERT);
+ if (slot && *slot)
+ i = (*slot)->class_name;
+ }
+ return i;
+ }
}
/* Implement @defs (<classname>) within struct bodies. */
tree interface = lookup_interface (class_name);
if (interface)
- return get_class_ivars (interface);
+ return get_class_ivars (interface, true);
- error ("cannot find interface declaration for %qs",
- IDENTIFIER_POINTER (class_name));
+ error ("cannot find interface declaration for %qE",
+ class_name);
return error_mark_node;
}
and for @defs constructs. */
static tree
-get_class_ivars (tree interface)
+get_class_ivars (tree interface, bool inherited)
{
tree ivar_chain = copy_list (CLASS_RAW_IVARS (interface));
if (!CLASS_IVARS (interface))
CLASS_IVARS (interface) = ivar_chain;
+ if (!inherited)
+ return ivar_chain;
+
while (CLASS_SUPER_NAME (interface))
{
/* Prepend super-class ivars. */
objc_create_temporary_var (tree type)
{
tree decl;
-
- decl = build_decl (VAR_DECL, NULL_TREE, type);
+
+ decl = build_decl (input_location,
+ VAR_DECL, NULL_TREE, type);
TREE_USED (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
DECL_IGNORED_P (decl) = 1;
/* The CATCH_EXPR of an open @catch clause. */
tree current_catch;
- /* The VAR_DECL holding the Darwin equivalent of EXC_PTR_EXPR. */
+ /* The VAR_DECL holding the Darwin equivalent of __builtin_eh_pointer. */
tree caught_decl;
tree stack_decl;
tree rethrow_decl;
static struct objc_try_context *cur_try_context;
+static GTY(()) tree objc_eh_personality_decl;
+
/* This hook, called via lang_eh_runtime_type, generates a runtime object
that represents TYPE. For Objective-C, this is just the class name. */
/* ??? Isn't there a class object or some such? Is it easy to get? */
#ifndef OBJCPLUS
-static tree
+tree
objc_eh_runtime_type (tree type)
{
return add_objc_string (OBJC_TYPE_NAME (TREE_TYPE (type)), class_names);
}
-#endif
-
-/* Initialize exception handling. */
-static void
-objc_init_exceptions (void)
+tree
+objc_eh_personality (void)
{
- static bool done = false;
- if (done)
- return;
- done = true;
+ if (!flag_objc_sjlj_exceptions
+ && !objc_eh_personality_decl)
+ objc_eh_personality_decl
+ = build_personality_function (USING_SJLJ_EXCEPTIONS
+ ? "__gnu_objc_personality_sj0"
+ : "__gnu_objc_personality_v0");
- if (flag_objc_sjlj_exceptions)
- {
- /* On Darwin, ObjC exceptions require a sufficiently recent
- version of the runtime, so the user must ask for them explicitly. */
- if (!flag_objc_exceptions)
- warning ("use %<-fobjc-exceptions%> to enable Objective-C "
- "exception syntax");
- }
-#ifndef OBJCPLUS
- else
- {
- c_eh_initialized_p = true;
- eh_personality_libfunc
- = init_one_libfunc (USING_SJLJ_EXCEPTIONS
- ? "__gnu_objc_personality_sj0"
- : "__gnu_objc_personality_v0");
- using_eh_for_cleanups ();
- lang_eh_runtime_type = objc_eh_runtime_type;
- }
-#endif
+ return objc_eh_personality_decl;
}
+#endif
-/* Build an EXC_PTR_EXPR, or the moral equivalent. In the case of Darwin,
- we'll arrange for it to be initialized (and associated with a binding)
- later. */
+/* Build __builtin_eh_pointer, or the moral equivalent. In the case
+ of Darwin, we'll arrange for it to be initialized (and associated
+ with a binding) later. */
static tree
objc_build_exc_ptr (void)
return var;
}
else
- return build (EXC_PTR_EXPR, objc_object_type);
+ {
+ tree t;
+ t = built_in_decls[BUILT_IN_EH_POINTER];
+ t = build_call_expr (t, 1, integer_zero_node);
+ return fold_convert (objc_object_type, t);
+ }
}
/* Build "objc_exception_try_exit(&_stack)". */
next_sjlj_build_try_exit (void)
{
tree t;
- t = build_fold_addr_expr (cur_try_context->stack_decl);
+ t = build_fold_addr_expr_loc (input_location, cur_try_context->stack_decl);
t = tree_cons (NULL, t, NULL);
- t = build_function_call (objc_exception_try_exit_decl, t);
+ t = build_function_call (input_location,
+ objc_exception_try_exit_decl, t);
return t;
}
{
tree t, enter, sj, cond;
- t = build_fold_addr_expr (cur_try_context->stack_decl);
+ t = build_fold_addr_expr_loc (input_location, cur_try_context->stack_decl);
t = tree_cons (NULL, t, NULL);
- enter = build_function_call (objc_exception_try_enter_decl, t);
+ enter = build_function_call (input_location,
+ objc_exception_try_enter_decl, t);
- t = build_component_ref (cur_try_context->stack_decl,
- get_identifier ("buf"));
- t = build_fold_addr_expr (t);
+ t = objc_build_component_ref (cur_try_context->stack_decl,
+ get_identifier ("buf"));
+ t = build_fold_addr_expr_loc (input_location, t);
+#ifdef OBJCPLUS
+ /* Convert _setjmp argument to type that is expected. */
+ if (TYPE_ARG_TYPES (TREE_TYPE (objc_setjmp_decl)))
+ t = convert (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (objc_setjmp_decl))), t);
+ else
+ t = convert (ptr_type_node, t);
+#else
t = convert (ptr_type_node, t);
+#endif
t = tree_cons (NULL, t, NULL);
- sj = build_function_call (objc_setjmp_decl, t);
+ sj = build_function_call (input_location,
+ objc_setjmp_decl, t);
- cond = build (COMPOUND_EXPR, TREE_TYPE (sj), enter, sj);
- cond = lang_hooks.truthvalue_conversion (cond);
+ cond = build2 (COMPOUND_EXPR, TREE_TYPE (sj), enter, sj);
+ cond = c_common_truthvalue_conversion (input_location, cond);
- return build (COND_EXPR, void_type_node, cond, NULL, NULL);
+ return build3 (COND_EXPR, void_type_node, cond, NULL, NULL);
}
-/* Build
- DECL = objc_exception_extract(&_stack);
-*/
-
+/* Build:
+
+ DECL = objc_exception_extract(&_stack); */
+
static tree
next_sjlj_build_exc_extract (tree decl)
{
tree t;
- t = build_fold_addr_expr (cur_try_context->stack_decl);
+ t = build_fold_addr_expr_loc (input_location, cur_try_context->stack_decl);
t = tree_cons (NULL, t, NULL);
- t = build_function_call (objc_exception_extract_decl, t);
+ t = build_function_call (input_location,
+ objc_exception_extract_decl, t);
t = convert (TREE_TYPE (decl), t);
- t = build (MODIFY_EXPR, void_type_node, decl, t);
+ t = build2 (MODIFY_EXPR, void_type_node, decl, t);
return t;
}
args = tree_cons (NULL, cur_try_context->caught_decl, NULL);
t = objc_get_class_reference (OBJC_TYPE_NAME (TREE_TYPE (type)));
args = tree_cons (NULL, t, args);
- t = build_function_call (objc_exception_match_decl, args);
- cond = lang_hooks.truthvalue_conversion (t);
+ t = build_function_call (input_location,
+ objc_exception_match_decl, args);
+ cond = c_common_truthvalue_conversion (input_location, t);
}
- t = build (COND_EXPR, void_type_node, cond, body, NULL);
- SET_EXPR_LOCUS (t, EXPR_LOCUS (stmt));
+ t = build3 (COND_EXPR, void_type_node, cond, body, NULL);
+ SET_EXPR_LOCATION (t, EXPR_LOCATION (stmt));
*last = t;
last = &COND_EXPR_ELSE (t);
if (!saw_id)
{
- t = build (MODIFY_EXPR, void_type_node, cur_try_context->rethrow_decl,
- cur_try_context->caught_decl);
+ t = build2 (MODIFY_EXPR, void_type_node, cur_try_context->rethrow_decl,
+ cur_try_context->caught_decl);
SET_EXPR_LOCATION (t, cur_try_context->end_catch_locus);
append_to_statement_list (t, last);
{
struct _objc_exception_data _stack;
- id volatile _rethrow = 0;
+ id _rethrow = 0;
try
{
objc_exception_try_enter (&_stack);
rethrow_decl = objc_create_temporary_var (objc_object_type);
cur_try_context->rethrow_decl = rethrow_decl;
- TREE_THIS_VOLATILE (rethrow_decl) = 1;
TREE_CHAIN (rethrow_decl) = stack_decl;
/* Build the outermost variable binding level. */
- bind = build (BIND_EXPR, void_type_node, rethrow_decl, NULL, NULL);
+ bind = build3 (BIND_EXPR, void_type_node, rethrow_decl, NULL, NULL);
SET_EXPR_LOCATION (bind, cur_try_context->try_locus);
TREE_SIDE_EFFECTS (bind) = 1;
/* Initialize rethrow_decl. */
- t = build (MODIFY_EXPR, void_type_node, rethrow_decl,
- convert (objc_object_type, null_pointer_node));
+ t = build2 (MODIFY_EXPR, void_type_node, rethrow_decl,
+ convert (objc_object_type, null_pointer_node));
SET_EXPR_LOCATION (t, cur_try_context->try_locus);
append_to_statement_list (t, &BIND_EXPR_BODY (bind));
/* Build the outermost TRY_FINALLY_EXPR. */
- try_fin = build (TRY_FINALLY_EXPR, void_type_node, NULL, NULL);
+ try_fin = build2 (TRY_FINALLY_EXPR, void_type_node, NULL, NULL);
SET_EXPR_LOCATION (try_fin, cur_try_context->try_locus);
TREE_SIDE_EFFECTS (try_fin) = 1;
append_to_statement_list (try_fin, &BIND_EXPR_BODY (bind));
if (cur_try_context->catch_list)
{
tree caught_decl = objc_build_exc_ptr ();
- catch_seq = build_stmt (BIND_EXPR, caught_decl, NULL, NULL);
+ catch_seq = build_stmt (input_location, BIND_EXPR, caught_decl, NULL, NULL);
+ TREE_SIDE_EFFECTS (catch_seq) = 1;
t = next_sjlj_build_exc_extract (caught_decl);
append_to_statement_list (t, &BIND_EXPR_BODY (catch_seq));
/* Build the complete FINALLY statement list. */
t = next_sjlj_build_try_exit ();
- t = build_stmt (COND_EXPR,
- lang_hooks.truthvalue_conversion (rethrow_decl),
+ t = build_stmt (input_location, COND_EXPR,
+ c_common_truthvalue_conversion
+ (input_location, rethrow_decl),
NULL, t);
SET_EXPR_LOCATION (t, cur_try_context->finally_locus);
append_to_statement_list (t, &TREE_OPERAND (try_fin, 1));
&TREE_OPERAND (try_fin, 1));
t = tree_cons (NULL, rethrow_decl, NULL);
- t = build_function_call (objc_exception_throw_decl, t);
- t = build_stmt (COND_EXPR,
- lang_hooks.truthvalue_conversion (rethrow_decl),
+ t = build_function_call (input_location,
+ objc_exception_throw_decl, t);
+ t = build_stmt (input_location, COND_EXPR,
+ c_common_truthvalue_conversion (input_location,
+ rethrow_decl),
t, NULL);
SET_EXPR_LOCATION (t, cur_try_context->end_finally_locus);
append_to_statement_list (t, &TREE_OPERAND (try_fin, 1));
void
objc_begin_try_stmt (location_t try_locus, tree body)
{
- struct objc_try_context *c = xcalloc (1, sizeof (*c));
+ struct objc_try_context *c = XCNEW (struct objc_try_context);
c->outer = cur_try_context;
c->try_body = body;
c->try_locus = try_locus;
c->end_try_locus = input_location;
cur_try_context = c;
- objc_init_exceptions ();
+ if (flag_objc_sjlj_exceptions)
+ {
+ /* On Darwin, ObjC exceptions require a sufficiently recent
+ version of the runtime, so the user must ask for them explicitly. */
+ if (!flag_objc_exceptions)
+ warning (0, "use %<-fobjc-exceptions%> to enable Objective-C "
+ "exception syntax");
+ }
+
+ if (flag_objc_sjlj_exceptions)
+ objc_mark_locals_volatile (NULL);
}
-/* Called just after parsing "@catch (parm)". Open a binding level,
+/* Called just after parsing "@catch (parm)". Open a binding level,
enter DECL into the binding level, and initialize it. Leave the
binding level open while the body of the compound statement is parsed. */
-
+
void
objc_begin_catch_clause (tree decl)
{
compound = c_begin_compound_stmt (true);
/* The parser passed in a PARM_DECL, but what we really want is a VAR_DECL. */
- decl = build_decl (VAR_DECL, DECL_NAME (decl), TREE_TYPE (decl));
+ decl = build_decl (input_location,
+ VAR_DECL, DECL_NAME (decl), TREE_TYPE (decl));
lang_hooks.decls.pushdecl (decl);
/* Since a decl is required here by syntax, don't warn if its unused. */
t = CATCH_TYPES (stmt);
if (t == error_mark_node)
continue;
- if (!t || objc_comptypes (TREE_TYPE (t), TREE_TYPE (type), 0) == 1)
+ if (!t || DERIVED_FROM_P (TREE_TYPE (t), TREE_TYPE (type)))
{
- warning ("exception of type %<%T%> will be caught",
+ warning (0, "exception of type %<%T%> will be caught",
TREE_TYPE (type));
- warning ("%H by earlier handler for %<%T%>",
- EXPR_LOCUS (stmt), TREE_TYPE (t ? t : objc_object_type));
+ warning_at (EXPR_LOCATION (stmt), 0, " by earlier handler for %<%T%>",
+ TREE_TYPE (t ? t : objc_object_type));
break;
}
}
/* Record the data for the catch in the try context so that we can
finalize it later. */
- t = build_stmt (CATCH_EXPR, type, compound);
+ t = build_stmt (input_location, CATCH_EXPR, type, compound);
cur_try_context->current_catch = t;
/* Initialize the decl from the EXC_PTR_EXPR we get from the runtime. */
t = objc_build_exc_ptr ();
t = convert (TREE_TYPE (decl), t);
- t = build (MODIFY_EXPR, void_type_node, decl, t);
+ t = build2 (MODIFY_EXPR, void_type_node, decl, t);
add_stmt (t);
}
cur_try_context->current_catch = NULL;
cur_try_context->end_catch_locus = input_location;
- CATCH_BODY (c) = c_end_compound_stmt (CATCH_BODY (c), 1);
+ CATCH_BODY (c) = c_end_compound_stmt (input_location, CATCH_BODY (c), 1);
append_to_statement_list (c, &cur_try_context->catch_list);
}
/* Called to finalize a @try construct. */
-void
+tree
objc_finish_try_stmt (void)
{
struct objc_try_context *c = cur_try_context;
/* If we're doing Darwin setjmp exceptions, build the big nasty. */
if (flag_objc_sjlj_exceptions)
{
+ bool save = in_late_binary_op;
+ in_late_binary_op = true;
if (!cur_try_context->finally_body)
{
cur_try_context->finally_locus = input_location;
cur_try_context->end_finally_locus = input_location;
}
stmt = next_sjlj_build_try_catch_finally ();
+ in_late_binary_op = save;
}
else
{
stmt = c->try_body;
if (c->catch_list)
{
- stmt = build_stmt (TRY_CATCH_EXPR, stmt, c->catch_list);
+ stmt = build_stmt (input_location, TRY_CATCH_EXPR, stmt, c->catch_list);
SET_EXPR_LOCATION (stmt, cur_try_context->try_locus);
}
if (c->finally_body)
{
- stmt = build_stmt (TRY_FINALLY_EXPR, stmt, c->finally_body);
+ stmt = build_stmt (input_location, TRY_FINALLY_EXPR, stmt, c->finally_body);
SET_EXPR_LOCATION (stmt, cur_try_context->try_locus);
}
}
cur_try_context = c->outer;
free (c);
+ return stmt;
}
tree
-objc_build_throw_stmt (tree throw_expr)
+objc_build_throw_stmt (location_t loc, tree throw_expr)
{
tree args;
- objc_init_exceptions ();
+ if (flag_objc_sjlj_exceptions)
+ {
+ /* On Darwin, ObjC exceptions require a sufficiently recent
+ version of the runtime, so the user must ask for them explicitly. */
+ if (!flag_objc_exceptions)
+ warning (0, "use %<-fobjc-exceptions%> to enable Objective-C "
+ "exception syntax");
+ }
if (throw_expr == NULL)
{
if (cur_try_context == NULL
|| cur_try_context->current_catch == NULL)
{
- error ("%<@throw%> (rethrow) used outside of a @catch block");
+ error_at (loc, "%<@throw%> (rethrow) used outside of a @catch block");
return NULL_TREE;
}
/* A throw is just a call to the runtime throw function with the
object as a parameter. */
args = tree_cons (NULL, throw_expr, NULL);
- return add_stmt (build_function_call (objc_exception_throw_decl, args));
+ return add_stmt (build_function_call (loc,
+ objc_exception_throw_decl, args));
}
-void
+tree
objc_build_synchronized (location_t start_locus, tree mutex, tree body)
{
tree args, call;
/* First lock the mutex. */
mutex = save_expr (mutex);
args = tree_cons (NULL, mutex, NULL);
- call = build_function_call (objc_sync_enter_decl, args);
+ call = build_function_call (input_location,
+ objc_sync_enter_decl, args);
SET_EXPR_LOCATION (call, start_locus);
add_stmt (call);
/* Build the mutex unlock. */
args = tree_cons (NULL, mutex, NULL);
- call = build_function_call (objc_sync_exit_decl, args);
+ call = build_function_call (input_location,
+ objc_sync_exit_decl, args);
SET_EXPR_LOCATION (call, input_location);
/* Put the that and the body in a TRY_FINALLY. */
objc_begin_try_stmt (start_locus, body);
objc_build_finally_clause (input_location, call);
- objc_finish_try_stmt ();
+ return objc_finish_try_stmt ();
}
\f
struct _objc_exception_data
{
- int buf[_JBLEN];
+ int buf[OBJC_JBLEN];
void *pointers[4];
}; */
/* The following yuckiness should prevent users from having to #include
<setjmp.h> in their code... */
-#ifdef TARGET_POWERPC
-/* snarfed from /usr/include/ppc/setjmp.h */
-#define _JBLEN (26 + 36 + 129 + 1)
-#else
-/* snarfed from /usr/include/i386/{setjmp,signal}.h */
-#define _JBLEN 18
+/* Define to a harmless positive value so the below code doesn't die. */
+#ifndef OBJC_JBLEN
+#define OBJC_JBLEN 18
#endif
static void
tree field_decl, field_decl_chain, index, temp_type;
objc_exception_data_template
- = start_struct (RECORD_TYPE, get_identifier (UTAG_EXCDATA));
+ = objc_start_struct (get_identifier (UTAG_EXCDATA));
- /* int buf[_JBLEN]; */
+ /* int buf[OBJC_JBLEN]; */
- index = build_index_type (build_int_cst (NULL_TREE, _JBLEN - 1));
+ index = build_index_type (build_int_cst (NULL_TREE, OBJC_JBLEN - 1));
field_decl = create_field_decl (build_array_type (integer_type_node, index),
"buf");
field_decl_chain = field_decl;
"pointers");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_exception_data_template, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_exception_data_template, field_decl_chain);
/* int _setjmp(...); */
/* If the user includes <setjmp.h>, this shall be superseded by
'int _setjmp(jmp_buf);' */
temp_type = build_function_type (integer_type_node, NULL_TREE);
objc_setjmp_decl
- = builtin_function (TAG_SETJMP, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
+ = add_builtin_function (TAG_SETJMP, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
/* id objc_exception_extract(struct _objc_exception_data *); */
temp_type
build_pointer_type (objc_exception_data_template),
OBJC_VOID_AT_END));
objc_exception_extract_decl
- = builtin_function (TAG_EXCEPTIONEXTRACT, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
+ = add_builtin_function (TAG_EXCEPTIONEXTRACT, temp_type, 0, NOT_BUILT_IN, NULL,
+ NULL_TREE);
/* void objc_exception_try_enter(struct _objc_exception_data *); */
/* void objc_exception_try_exit(struct _objc_exception_data *); */
temp_type
build_pointer_type (objc_exception_data_template),
OBJC_VOID_AT_END));
objc_exception_try_enter_decl
- = builtin_function (TAG_EXCEPTIONTRYENTER, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
+ = add_builtin_function (TAG_EXCEPTIONTRYENTER, temp_type, 0, NOT_BUILT_IN, NULL,
+ NULL_TREE);
objc_exception_try_exit_decl
- = builtin_function (TAG_EXCEPTIONTRYEXIT, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
+ = add_builtin_function (TAG_EXCEPTIONTRYEXIT, temp_type, 0, NOT_BUILT_IN, NULL,
+ NULL_TREE);
/* int objc_exception_match(id, id); */
- temp_type
+ temp_type
= build_function_type (integer_type_node,
tree_cons (NULL_TREE, objc_object_type,
tree_cons (NULL_TREE, objc_object_type,
OBJC_VOID_AT_END)));
objc_exception_match_decl
- = builtin_function (TAG_EXCEPTIONMATCH, temp_type, 0, NOT_BUILT_IN, NULL, NULL_TREE);
+ = add_builtin_function (TAG_EXCEPTIONMATCH, temp_type, 0, NOT_BUILT_IN, NULL,
+ NULL_TREE);
+
+ /* id objc_assign_ivar (id, id, unsigned int); */
+ /* id objc_assign_ivar_Fast (id, id, unsigned int)
+ __attribute__ ((hard_coded_address (OFFS_ASSIGNIVAR_FAST))); */
+ temp_type
+ = build_function_type (objc_object_type,
+ tree_cons
+ (NULL_TREE, objc_object_type,
+ tree_cons (NULL_TREE, objc_object_type,
+ tree_cons (NULL_TREE,
+ unsigned_type_node,
+ OBJC_VOID_AT_END))));
+ objc_assign_ivar_decl
+ = add_builtin_function (TAG_ASSIGNIVAR, temp_type, 0, NOT_BUILT_IN,
+ NULL, NULL_TREE);
+#ifdef OFFS_ASSIGNIVAR_FAST
+ objc_assign_ivar_fast_decl
+ = add_builtin_function (TAG_ASSIGNIVAR_FAST, temp_type, 0,
+ NOT_BUILT_IN, NULL, NULL_TREE);
+ DECL_ATTRIBUTES (objc_assign_ivar_fast_decl)
+ = tree_cons (get_identifier ("hard_coded_address"),
+ build_int_cst (NULL_TREE, OFFS_ASSIGNIVAR_FAST),
+ NULL_TREE);
+#else
+ /* Default to slower ivar method. */
+ objc_assign_ivar_fast_decl = objc_assign_ivar_decl;
+#endif
+
+ /* id objc_assign_global (id, id *); */
+ /* id objc_assign_strongCast (id, id *); */
+ temp_type = build_function_type (objc_object_type,
+ tree_cons (NULL_TREE, objc_object_type,
+ tree_cons (NULL_TREE, build_pointer_type (objc_object_type),
+ OBJC_VOID_AT_END)));
+ objc_assign_global_decl
+ = add_builtin_function (TAG_ASSIGNGLOBAL, temp_type, 0, NOT_BUILT_IN, NULL,
+ NULL_TREE);
+ objc_assign_strong_cast_decl
+ = add_builtin_function (TAG_ASSIGNSTRONGCAST, temp_type, 0, NOT_BUILT_IN, NULL,
+ NULL_TREE);
}
static void
tree_cons (NULL_TREE, objc_object_type,
OBJC_VOID_AT_END));
objc_exception_throw_decl
- = builtin_function (TAG_EXCEPTIONTHROW, temp_type, 0, NOT_BUILT_IN, NULL,
- noreturn_list);
+ = add_builtin_function (TAG_EXCEPTIONTHROW, temp_type, 0, NOT_BUILT_IN, NULL,
+ noreturn_list);
objc_sync_enter_decl
- = builtin_function (TAG_SYNCENTER, temp_type, 0, NOT_BUILT_IN,
- NULL, nothrow_list);
+ = add_builtin_function (TAG_SYNCENTER, temp_type, 0, NOT_BUILT_IN,
+ NULL, nothrow_list);
objc_sync_exit_decl
- = builtin_function (TAG_SYNCEXIT, temp_type, 0, NOT_BUILT_IN,
- NULL, nothrow_list);
+ = add_builtin_function (TAG_SYNCEXIT, temp_type, 0, NOT_BUILT_IN,
+ NULL, nothrow_list);
}
/* Construct a C struct corresponding to ObjC class CLASS, with the same
}; */
static void
-build_private_template (tree class)
+build_private_template (tree klass)
{
- if (!CLASS_STATIC_TEMPLATE (class))
+ if (!CLASS_STATIC_TEMPLATE (klass))
{
- tree record = start_struct (RECORD_TYPE, CLASS_NAME (class));
+ tree record = objc_build_struct (klass,
+ get_class_ivars (klass, false),
+ CLASS_SUPER_NAME (klass));
- finish_struct (record, get_class_ivars (class), NULL_TREE);
- /* mark this record as class template - for class type checking */
- INIT_TYPE_OBJC_INFO (record);
- TYPE_OBJC_INTERFACE (record) = class;
- CLASS_STATIC_TEMPLATE (class) = record;
+ /* Set the TREE_USED bit for this struct, so that stab generator
+ can emit stabs for this struct type. */
+ if (flag_debug_only_used_symbols && TYPE_STUB_DECL (record))
+ TREE_USED (TYPE_STUB_DECL (record)) = 1;
}
}
\f
{
tree field_decl, field_decl_chain;
- objc_protocol_template = start_struct (RECORD_TYPE,
- get_identifier (UTAG_PROTOCOL));
+ objc_protocol_template = objc_start_struct (get_identifier (UTAG_PROTOCOL));
/* struct _objc_class *isa; */
field_decl = create_field_decl (build_pointer_type
"protocol_list");
chainon (field_decl_chain, field_decl);
- /* struct objc_method_list *instance_methods; */
- field_decl = create_field_decl (build_pointer_type
- (xref_tag (RECORD_TYPE,
- get_identifier
- (UTAG_METHOD_PROTOTYPE_LIST))),
+ /* struct _objc__method_prototype_list *instance_methods; */
+ field_decl = create_field_decl (objc_method_proto_list_ptr,
"instance_methods");
chainon (field_decl_chain, field_decl);
- /* struct objc_method_list *class_methods; */
- field_decl = create_field_decl (build_pointer_type
- (xref_tag (RECORD_TYPE,
- get_identifier
- (UTAG_METHOD_PROTOTYPE_LIST))),
+ /* struct _objc__method_prototype_list *class_methods; */
+ field_decl = create_field_decl (objc_method_proto_list_ptr,
"class_methods");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_protocol_template, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_protocol_template, field_decl_chain);
}
static tree
/* Generate an unnamed struct definition. */
- objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE);
+ objc_ivar_list_record = objc_start_struct (NULL_TREE);
/* int method_count; */
field_decl = create_field_decl (integer_type_node, "method_count");
"method_list");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_ivar_list_record, field_decl_chain);
return objc_ivar_list_record;
}
tree proto_record;
tree field_decl, field_decl_chain;
- proto_record
- = start_struct (RECORD_TYPE, get_identifier (UTAG_METHOD_PROTOTYPE));
+ proto_record = objc_start_struct (get_identifier (UTAG_METHOD_PROTOTYPE));
/* SEL _cmd; */
field_decl = create_field_decl (objc_selector_type, "_cmd");
field_decl = create_field_decl (string_type_node, "method_types");
chainon (field_decl_chain, field_decl);
- finish_struct (proto_record, field_decl_chain, NULL_TREE);
+ objc_finish_struct (proto_record, field_decl_chain);
return proto_record;
}
type = TREE_VALUE (TREE_TYPE (type));
if (TREE_CODE (type) == TYPE_DECL)
type = TREE_TYPE (type);
- return TYPE_MAIN_VARIANT (type);
+ return type;
}
static int
/* If a type size is not known, bail out. */
if (sz < 0)
{
- error ("%Jtype '%D' does not have a known size",
- type, type);
+ error ("type %q+D does not have a known size",
+ type);
/* Pretend that the encoding succeeded; the compilation will
fail nevertheless. */
goto finish_encoding;
finish_encoding:
obstack_1grow (&util_obstack, '\0');
- result = get_identifier (obstack_finish (&util_obstack));
+ result = get_identifier (XOBFINISH (&util_obstack, char *));
obstack_free (&util_obstack, util_firstobj);
return result;
}
}
}
+/* Generate either '- .cxx_construct' or '- .cxx_destruct' for the
+ current class. */
+#ifdef OBJCPLUS
+static void
+objc_generate_cxx_ctor_or_dtor (bool dtor)
+{
+ tree fn, body, compound_stmt, ivar;
+
+ /* - (id) .cxx_construct { ... return self; } */
+ /* - (void) .cxx_construct { ... } */
+
+ objc_set_method_type (MINUS_EXPR);
+ objc_start_method_definition
+ (objc_build_method_signature (build_tree_list (NULL_TREE,
+ dtor
+ ? void_type_node
+ : objc_object_type),
+ get_identifier (dtor
+ ? TAG_CXX_DESTRUCT
+ : TAG_CXX_CONSTRUCT),
+ make_node (TREE_LIST),
+ false));
+ body = begin_function_body ();
+ compound_stmt = begin_compound_stmt (0);
+
+ ivar = CLASS_IVARS (implementation_template);
+ /* Destroy ivars in reverse order. */
+ if (dtor)
+ ivar = nreverse (copy_list (ivar));
+
+ for (; ivar; ivar = TREE_CHAIN (ivar))
+ {
+ if (TREE_CODE (ivar) == FIELD_DECL)
+ {
+ tree type = TREE_TYPE (ivar);
+
+ /* Call the ivar's default constructor or destructor. Do not
+ call the destructor unless a corresponding constructor call
+ has also been made (or is not needed). */
+ if (MAYBE_CLASS_TYPE_P (type)
+ && (dtor
+ ? (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)
+ && (!TYPE_NEEDS_CONSTRUCTING (type)
+ || TYPE_HAS_DEFAULT_CONSTRUCTOR (type)))
+ : (TYPE_NEEDS_CONSTRUCTING (type)
+ && TYPE_HAS_DEFAULT_CONSTRUCTOR (type))))
+ finish_expr_stmt
+ (build_special_member_call
+ (build_ivar_reference (DECL_NAME (ivar)),
+ dtor ? complete_dtor_identifier : complete_ctor_identifier,
+ NULL, type, LOOKUP_NORMAL, tf_warning_or_error));
+ }
+ }
+
+ /* The constructor returns 'self'. */
+ if (!dtor)
+ finish_return_stmt (self_decl);
+
+ finish_compound_stmt (compound_stmt);
+ finish_function_body (body);
+ fn = current_function_decl;
+ finish_function ();
+ objc_finish_method_definition (fn);
+}
+
+/* The following routine will examine the current @interface for any
+ non-POD C++ ivars requiring non-trivial construction and/or
+ destruction, and then synthesize special '- .cxx_construct' and/or
+ '- .cxx_destruct' methods which will run the appropriate
+ construction or destruction code. Note that ivars inherited from
+ super-classes are _not_ considered. */
+static void
+objc_generate_cxx_cdtors (void)
+{
+ bool need_ctor = false, need_dtor = false;
+ tree ivar;
+
+ /* We do not want to do this for categories, since they do not have
+ their own ivars. */
+
+ if (TREE_CODE (objc_implementation_context) != CLASS_IMPLEMENTATION_TYPE)
+ return;
+
+ /* First, determine if we even need a constructor and/or destructor. */
+
+ for (ivar = CLASS_IVARS (implementation_template); ivar;
+ ivar = TREE_CHAIN (ivar))
+ {
+ if (TREE_CODE (ivar) == FIELD_DECL)
+ {
+ tree type = TREE_TYPE (ivar);
+
+ if (MAYBE_CLASS_TYPE_P (type))
+ {
+ if (TYPE_NEEDS_CONSTRUCTING (type)
+ && TYPE_HAS_DEFAULT_CONSTRUCTOR (type))
+ /* NB: If a default constructor is not available, we will not
+ be able to initialize this ivar; the add_instance_variable()
+ routine will already have warned about this. */
+ need_ctor = true;
+
+ if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)
+ && (!TYPE_NEEDS_CONSTRUCTING (type)
+ || TYPE_HAS_DEFAULT_CONSTRUCTOR (type)))
+ /* NB: If a default constructor is not available, we will not
+ call the destructor either, for symmetry. */
+ need_dtor = true;
+ }
+ }
+ }
+
+ /* Generate '- .cxx_construct' if needed. */
+
+ if (need_ctor)
+ objc_generate_cxx_ctor_or_dtor (false);
+
+ /* Generate '- .cxx_destruct' if needed. */
+
+ if (need_dtor)
+ objc_generate_cxx_ctor_or_dtor (true);
+
+ /* The 'imp_list' variable points at an imp_entry record for the current
+ @implementation. Record the existence of '- .cxx_construct' and/or
+ '- .cxx_destruct' methods therein; it will be included in the
+ metadata for the class. */
+ if (flag_next_runtime)
+ imp_list->has_cxx_cdtors = (need_ctor || need_dtor);
+}
+#endif
+
/* For each protocol which was referenced either from a @protocol()
expression, or because a class/category implements it (then a
pointer to the protocol is stored in the struct describing the
if (refs_decl)
refs_expr = convert (build_pointer_type (build_pointer_type
(objc_protocol_template)),
- build_unary_op (ADDR_EXPR, refs_decl, 0));
+ build_unary_op (input_location,
+ ADDR_EXPR, refs_decl, 0));
else
refs_expr = build_int_cst (NULL_TREE, 0);
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
- expr = build_unary_op (ADDR_EXPR, instance_methods, 0);
+ expr = convert (objc_method_proto_list_ptr,
+ build_unary_op (input_location,
+ ADDR_EXPR, instance_methods, 0));
initlist = tree_cons (NULL_TREE, expr, initlist);
}
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
- expr = build_unary_op (ADDR_EXPR, class_methods, 0);
+ expr = convert (objc_method_proto_list_ptr,
+ build_unary_op (input_location,
+ ADDR_EXPR, class_methods, 0));
initlist = tree_cons (NULL_TREE, expr, initlist);
}
{
tree field_decl, field_decl_chain;
- objc_category_template = start_struct (RECORD_TYPE,
- get_identifier (UTAG_CATEGORY));
+ objc_category_template = objc_start_struct (get_identifier (UTAG_CATEGORY));
/* char *category_name; */
field_decl = create_field_decl (string_type_node, "category_name");
chainon (field_decl_chain, field_decl);
/* struct _objc_method_list *instance_methods; */
- field_decl = create_field_decl (build_pointer_type
- (xref_tag (RECORD_TYPE,
- get_identifier
- (UTAG_METHOD_LIST))),
+ field_decl = create_field_decl (objc_method_list_ptr,
"instance_methods");
chainon (field_decl_chain, field_decl);
/* struct _objc_method_list *class_methods; */
- field_decl = create_field_decl (build_pointer_type
- (xref_tag (RECORD_TYPE,
- get_identifier
- (UTAG_METHOD_LIST))),
+ field_decl = create_field_decl (objc_method_list_ptr,
"class_methods");
chainon (field_decl_chain, field_decl);
"protocol_list");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_category_template, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_category_template, field_decl_chain);
}
/* struct _objc_selector {
static void
build_selector_template (void)
{
-
tree field_decl, field_decl_chain;
- objc_selector_template
- = start_struct (RECORD_TYPE, get_identifier (UTAG_SELECTOR));
+ objc_selector_template = objc_start_struct (get_identifier (UTAG_SELECTOR));
/* SEL sel_id; */
field_decl = create_field_decl (objc_selector_type, "sel_id");
field_decl = create_field_decl (string_type_node, "sel_type");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_selector_template, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_selector_template, field_decl_chain);
}
/* struct _objc_class {
{
tree field_decl, field_decl_chain;
- objc_class_template
- = start_struct (RECORD_TYPE, get_identifier (UTAG_CLASS));
+ objc_class_template = objc_start_struct (get_identifier (UTAG_CLASS));
/* struct _objc_class *isa; */
field_decl = create_field_decl (build_pointer_type (objc_class_template),
chainon (field_decl_chain, field_decl);
/* struct _objc_ivar_list *ivars; */
- field_decl = create_field_decl (build_pointer_type
- (xref_tag (RECORD_TYPE,
- get_identifier
- (UTAG_IVAR_LIST))),
+ field_decl = create_field_decl (objc_ivar_list_ptr,
"ivars");
chainon (field_decl_chain, field_decl);
/* struct _objc_method_list *methods; */
- field_decl = create_field_decl (build_pointer_type
- (xref_tag (RECORD_TYPE,
- get_identifier
- (UTAG_METHOD_LIST))),
+ field_decl = create_field_decl (objc_method_list_ptr,
"methods");
chainon (field_decl_chain, field_decl);
"gc_object_type");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_class_template, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_class_template, field_decl_chain);
}
/* Generate appropriate forward declarations for an implementation. */
/* Pre-build the following entities - for speed/convenience. */
an_id = get_identifier ("super_class");
- ucls_super_ref = build_component_ref (UOBJC_CLASS_decl, an_id);
- uucls_super_ref = build_component_ref (UOBJC_METACLASS_decl, an_id);
+ ucls_super_ref = objc_build_component_ref (UOBJC_CLASS_decl, an_id);
+ uucls_super_ref = objc_build_component_ref (UOBJC_METACLASS_decl, an_id);
}
static void
error_with_ivar (const char *message, tree decl)
{
- error ("%J%s %qs", decl,
- message, gen_declaration (decl));
+ error_at (DECL_SOURCE_LOCATION (decl), "%s %qs",
+ message, identifier_to_locale (gen_declaration (decl)));
}
{
tree field_decl, field_decl_chain;
- objc_super_template = start_struct (RECORD_TYPE, get_identifier (UTAG_SUPER));
+ objc_super_template = objc_start_struct (get_identifier (UTAG_SUPER));
/* struct _objc_object *self; */
field_decl = create_field_decl (objc_object_type, "self");
"super_class");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_super_template, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_super_template, field_decl_chain);
}
/* struct _objc_ivar {
tree field_decl, field_decl_chain;
objc_ivar_id = get_identifier (UTAG_IVAR);
- objc_ivar_record = start_struct (RECORD_TYPE, objc_ivar_id);
+ objc_ivar_record = objc_start_struct (objc_ivar_id);
/* char *ivar_name; */
field_decl = create_field_decl (string_type_node, "ivar_name");
field_decl = create_field_decl (integer_type_node, "ivar_offset");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_ivar_record, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_ivar_record, field_decl_chain);
return objc_ivar_record;
}
tree objc_ivar_list_record;
tree field_decl, field_decl_chain;
- objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE);
+ objc_ivar_list_record = objc_start_struct (NULL_TREE);
/* int ivar_count; */
field_decl = create_field_decl (integer_type_node, "ivar_count");
"ivar_list");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_ivar_list_record, field_decl_chain);
return objc_ivar_list_record;
}
tree objc_ivar_list_record;
tree field_decl, field_decl_chain;
- objc_ivar_list_record = start_struct (RECORD_TYPE, NULL_TREE);
+ objc_ivar_list_record = objc_start_struct (NULL_TREE);
/* struct _objc__method_prototype_list *method_next; */
- field_decl = create_field_decl (build_pointer_type
- (xref_tag (RECORD_TYPE,
- get_identifier
- (UTAG_METHOD_PROTOTYPE_LIST))),
+ field_decl = create_field_decl (objc_method_proto_list_ptr,
"method_next");
field_decl_chain = field_decl;
"method_list");
chainon (field_decl_chain, field_decl);
- finish_struct (objc_ivar_list_record, field_decl_chain, NULL_TREE);
+ objc_finish_struct (objc_ivar_list_record, field_decl_chain);
return objc_ivar_list_record;
}
ivar
= tree_cons
(NULL_TREE,
- add_objc_string (get_identifier (obstack_finish (&util_obstack)),
+ add_objc_string (get_identifier (XOBFINISH (&util_obstack, char *)),
meth_var_types),
ivar);
obstack_free (&util_obstack, util_firstobj);
}
/* Count only the fields occurring in T. */
+
static int
ivar_list_length (tree t)
{
elemlist
= tree_cons (NULL_TREE,
- convert (ptr_type_node,
- build_unary_op (ADDR_EXPR,
+ convert (ptr_type_node,
+ build_unary_op (input_location, ADDR_EXPR,
METHOD_DEFINITION (entries), 1)),
elemlist);
tree _SLT_record;
tree field_decl, field_decl_chain;
- _SLT_record = start_struct (RECORD_TYPE, get_identifier (UTAG_METHOD));
+ _SLT_record = objc_start_struct (get_identifier (UTAG_METHOD));
/* SEL _cmd; */
field_decl = create_field_decl (objc_selector_type, "_cmd");
"_imp");
chainon (field_decl_chain, field_decl);
- finish_struct (_SLT_record, field_decl_chain, NULL_TREE);
+ objc_finish_struct (_SLT_record, field_decl_chain);
return _SLT_record;
}
if (TREE_CODE (pval) == PROTOCOL_INTERFACE_TYPE
&& PROTOCOL_FORWARD_DECL (pval))
{
- e = build_unary_op (ADDR_EXPR, PROTOCOL_FORWARD_DECL (pval), 0);
+ e = build_unary_op (input_location, ADDR_EXPR,
+ PROTOCOL_FORWARD_DECL (pval), 0);
initlist = tree_cons (NULL_TREE, e, initlist);
}
}
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
- expr = build_unary_op (ADDR_EXPR, instance_methods, 0);
+ expr = convert (objc_method_list_ptr,
+ build_unary_op (input_location, ADDR_EXPR,
+ instance_methods, 0));
initlist = tree_cons (NULL_TREE, expr, initlist);
}
if (!class_methods)
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
- expr = build_unary_op (ADDR_EXPR, class_methods, 0);
+ expr = convert (objc_method_list_ptr,
+ build_unary_op (input_location, ADDR_EXPR,
+ class_methods, 0));
initlist = tree_cons (NULL_TREE, expr, initlist);
}
else
{
expr = convert (build_pointer_type
- (build_pointer_type
+ (build_pointer_type
(objc_protocol_template)),
- build_unary_op (ADDR_EXPR, protocol_list, 0));
+ build_unary_op (input_location, ADDR_EXPR,
+ protocol_list, 0));
initlist = tree_cons (NULL_TREE, expr, initlist);
}
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
- expr = build_unary_op (ADDR_EXPR, ivar_list, 0);
+ expr = convert (objc_ivar_list_ptr,
+ build_unary_op (input_location, ADDR_EXPR,
+ ivar_list, 0));
initlist = tree_cons (NULL_TREE, expr, initlist);
}
initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 0), initlist);
else
{
- expr = build_unary_op (ADDR_EXPR, dispatch_table, 0);
+ expr = convert (objc_method_list_ptr,
+ build_unary_op (input_location, ADDR_EXPR,
+ dispatch_table, 0));
initlist = tree_cons (NULL_TREE, expr, initlist);
}
else
{
expr = convert (build_pointer_type
- (build_pointer_type
+ (build_pointer_type
(objc_protocol_template)),
- build_unary_op (ADDR_EXPR, protocol_list, 0));
+ build_unary_op (input_location, ADDR_EXPR,
+ protocol_list, 0));
initlist = tree_cons (NULL_TREE, expr, initlist);
}
/* Retrieve category interface CAT_NAME (if any) associated with CLASS. */
static inline tree
-lookup_category (tree class, tree cat_name)
+lookup_category (tree klass, tree cat_name)
{
- tree category = CLASS_CATEGORY_LIST (class);
+ tree category = CLASS_CATEGORY_LIST (klass);
while (category && CLASS_SUPER_NAME (category) != cat_name)
category = CLASS_CATEGORY_LIST (category);
static struct objc_class _OBJC_CLASS_Foo={ ... }; */
static void
-generate_shared_structures (void)
+generate_shared_structures (int cls_flags)
{
- tree sc_spec, decl_specs, decl;
+ tree decl;
tree name_expr, super_expr, root_expr;
tree my_root_id = NULL_TREE, my_super_id = NULL_TREE;
tree cast_type, initlist, protocol_decl;
if (my_super_id)
{
super_expr = add_objc_string (my_super_id, class_names);
- super_expr = build_c_cast (cast_type, super_expr); /* cast! */
+ super_expr = build_c_cast (input_location,
+ cast_type, super_expr); /* cast! */
}
else
super_expr = build_int_cst (NULL_TREE, 0);
root_expr = add_objc_string (my_root_id, class_names);
- root_expr = build_c_cast (cast_type, root_expr); /* cast! */
+ root_expr = build_c_cast (input_location, cast_type, root_expr); /* cast! */
if (CLASS_PROTOCOL_LIST (implementation_template))
{
/* static struct objc_class _OBJC_METACLASS_Foo = { ... }; */
- sc_spec = build_tree_list (NULL_TREE, ridpointers[(int) RID_STATIC]);
- decl_specs = tree_cons (NULL_TREE, objc_class_template, sc_spec);
-
decl = start_var_decl (objc_class_template,
IDENTIFIER_POINTER
(DECL_NAME (UOBJC_METACLASS_decl)));
initlist
= build_shared_structure_initializer
(TREE_TYPE (decl),
- build_unary_op (ADDR_EXPR, UOBJC_METACLASS_decl, 0),
+ build_unary_op (input_location, ADDR_EXPR, UOBJC_METACLASS_decl, 0),
super_expr, name_expr,
convert (integer_type_node,
TYPE_SIZE_UNIT (CLASS_STATIC_TEMPLATE
(implementation_template))),
- 1 /*CLS_FACTORY*/,
+ 1 /*CLS_FACTORY*/ | cls_flags,
UOBJC_INSTANCE_METHODS_decl,
UOBJC_INSTANCE_VARIABLES_decl,
protocol_decl);
static tree
build_method_decl (enum tree_code code, tree ret_type, tree selector,
- tree add_args)
+ tree add_args, bool ellipsis)
{
tree method_decl;
METHOD_SEL_NAME (method_decl) = build_keyword_selector (selector);
METHOD_SEL_ARGS (method_decl) = selector;
METHOD_ADD_ARGS (method_decl) = add_args;
+ METHOD_ADD_ARGS_ELLIPSIS_P (method_decl) = ellipsis;
}
else
{
chainon (arglist, build_tree_list (NULL_TREE, arg_type));
}
- if (!TREE_OVERFLOW (METHOD_ADD_ARGS (meth)))
+ if (!METHOD_ADD_ARGS_ELLIPSIS_P (meth))
goto lack_of_ellipsis;
}
else
different types. */
attr loop;
- warning ("multiple %s named %<%c%s%> found",
- methods ? "methods" : "selectors",
- (is_class ? '+' : '-'),
- IDENTIFIER_POINTER (METHOD_SEL_NAME (meth)));
+ /* But just how different are those types? If
+ -Wno-strict-selector-match is specified, we shall not
+ complain if the differences are solely among types with
+ identical size and alignment. */
+ if (!warn_strict_selector_match)
+ {
+ for (loop = hsh->list; loop; loop = loop->next)
+ if (!comp_proto_with_proto (meth, loop->value, 0))
+ goto issue_warning;
+
+ return meth;
+ }
+
+ issue_warning:
+ if (methods)
+ {
+ bool type = TREE_CODE (meth) == INSTANCE_METHOD_DECL;
+
+ warning_at (input_location, 0,
+ "multiple methods named %<%c%E%> found",
+ (is_class ? '+' : '-'),
+ METHOD_SEL_NAME (meth));
+ inform (DECL_SOURCE_LOCATION (meth), "using %<%c%s%>",
+ (type ? '-' : '+'),
+ identifier_to_locale (gen_method_decl (meth)));
+ }
+ else
+ {
+ bool type = TREE_CODE (meth) == INSTANCE_METHOD_DECL;
+
+ warning_at (input_location, 0,
+ "multiple selectors named %<%c%E%> found",
+ (is_class ? '+' : '-'),
+ METHOD_SEL_NAME (meth));
+ inform (DECL_SOURCE_LOCATION (meth), "found %<%c%s%>",
+ (type ? '-' : '+'),
+ identifier_to_locale (gen_method_decl (meth)));
+ }
- warn_with_method (methods ? "using" : "found",
- ((TREE_CODE (meth) == INSTANCE_METHOD_DECL)
- ? '-'
- : '+'),
- meth);
for (loop = hsh->list; loop; loop = loop->next)
- warn_with_method ("also found",
- ((TREE_CODE (loop->value) == INSTANCE_METHOD_DECL)
- ? '-'
- : '+'),
- loop->value);
+ {
+ bool type = TREE_CODE (loop->value) == INSTANCE_METHOD_DECL;
+
+ inform (DECL_SOURCE_LOCATION (loop->value), "also found %<%c%s%>",
+ (type ? '-' : '+'),
+ identifier_to_locale (gen_method_decl (loop->value)));
+ }
}
}
return meth;
/* The receiver is a function call that returns an id. Check if
it is a call to objc_getClass, if so, pick up the class name. */
if (TREE_CODE (receiver) == CALL_EXPR
- && (exp = TREE_OPERAND (receiver, 0))
+ && (exp = CALL_EXPR_FN (receiver))
&& TREE_CODE (exp) == ADDR_EXPR
&& (exp = TREE_OPERAND (exp, 0))
&& TREE_CODE (exp) == FUNCTION_DECL
&& TREE_TYPE (exp) == TREE_TYPE (objc_get_class_decl)
&& !strcmp (IDENTIFIER_POINTER (DECL_NAME (exp)), TAG_GETCLASS)
/* We have a call to objc_get_class/objc_getClass! */
- && (arg = TREE_OPERAND (receiver, 1))
- && TREE_CODE (arg) == TREE_LIST
- && (arg = TREE_VALUE (arg)))
+ && (arg = CALL_EXPR_ARG (receiver, 0)))
{
STRIP_NOPS (arg);
if (TREE_CODE (arg) == ADDR_EXPR
#endif
tree method_params = NULL_TREE;
- if (TREE_CODE (receiver) == ERROR_MARK)
+ if (TREE_CODE (receiver) == ERROR_MARK || TREE_CODE (args) == ERROR_MARK)
return error_mark_node;
/* Obtain the full selector name. */
if (!is_class)
method_prototype = hash_lookup (nst_method_hash_list,
sel_name);
-
+
if (!method_prototype)
{
method_prototype = hash_lookup (cls_method_hash_list,
rtype = receiver;
while (TREE_CODE (rtype) == COMPOUND_EXPR
|| TREE_CODE (rtype) == MODIFY_EXPR
- || TREE_CODE (rtype) == NOP_EXPR
- || TREE_CODE (rtype) == CONVERT_EXPR
+ || CONVERT_EXPR_P (rtype)
|| TREE_CODE (rtype) == COMPONENT_REF)
rtype = TREE_OPERAND (rtype, 0);
self = (rtype == self_decl);
|| (TREE_CODE (receiver) == COMPOUND_EXPR
&& !IS_SUPER (rtype)));
+ /* If we are calling [super dealloc], reset our warning flag. */
+ if (super && !strcmp ("dealloc", IDENTIFIER_POINTER (sel_name)))
+ should_call_super_dealloc = 0;
+
/* If the receiver is a class object, retrieve the corresponding
@interface, if one exists. */
class_tree = receiver_is_class_object (receiver, self, super);
{
if (!CLASS_SUPER_NAME (implementation_template))
{
- error ("no super class declared in @interface for %qs",
- IDENTIFIER_POINTER (CLASS_NAME (implementation_template)));
+ error ("no super class declared in @interface for %qE",
+ CLASS_NAME (implementation_template));
return error_mark_node;
}
rtype = lookup_interface (CLASS_SUPER_NAME (implementation_template));
/* If receiver is of type `id' or `Class' (or if the @interface for a
class is not visible), we shall be satisfied with the existence of
any instance or class method. */
- if (!rtype || objc_is_id (rtype))
+ if (objc_is_id (rtype))
{
- if (!rtype)
- rtype = xref_tag (RECORD_TYPE, class_tree);
- else
- {
- class_tree = (IS_CLASS (rtype) ? objc_class_name : NULL_TREE);
- rprotos = (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype))
- ? TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype))
- : NULL_TREE);
- rtype = NULL_TREE;
- }
+ class_tree = (IS_CLASS (rtype) ? objc_class_name : NULL_TREE);
+ rprotos = (TYPE_HAS_OBJC_INFO (TREE_TYPE (rtype))
+ ? TYPE_OBJC_PROTOCOL_LIST (TREE_TYPE (rtype))
+ : NULL_TREE);
+ rtype = NULL_TREE;
if (rprotos)
{
= lookup_method_in_protocol_list (rprotos, sel_name, 0);
if (method_prototype)
- warning ("found %<-%s%> instead of %<+%s%> in protocol(s)",
- IDENTIFIER_POINTER (sel_name),
- IDENTIFIER_POINTER (sel_name));
+ warning (0, "found %<-%E%> instead of %<+%E%> in protocol(s)",
+ sel_name, sel_name);
}
}
}
- else
+ else if (rtype)
{
- tree orig_rtype = rtype, saved_rtype;
+ tree orig_rtype = rtype;
if (TREE_CODE (rtype) == POINTER_TYPE)
rtype = TREE_TYPE (rtype);
&& TREE_CODE (OBJC_TYPE_NAME (rtype)) == TYPE_DECL
&& DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (rtype)))
rtype = DECL_ORIGINAL_TYPE (OBJC_TYPE_NAME (rtype));
- saved_rtype = rtype;
if (TYPED_OBJECT (rtype))
{
rprotos = TYPE_OBJC_PROTOCOL_LIST (rtype);
more intelligent about which methods the receiver will
understand. */
if (!rtype || TREE_CODE (rtype) == IDENTIFIER_NODE)
- rtype = saved_rtype;
+ rtype = NULL_TREE;
else if (TREE_CODE (rtype) == CLASS_INTERFACE_TYPE
|| TREE_CODE (rtype) == CLASS_IMPLEMENTATION_TYPE)
{
exist locally as part of the @implementation. */
if (!method_prototype && objc_implementation_context
&& CLASS_NAME (objc_implementation_context)
- == OBJC_TYPE_NAME (rtype))
+ == OBJC_TYPE_NAME (rtype))
method_prototype
= lookup_method
((class_tree
}
else
{
- warning ("invalid receiver type %qs",
- gen_type_name (orig_rtype));
+ warning (0, "invalid receiver type %qs",
+ identifier_to_locale (gen_type_name (orig_rtype)));
/* After issuing the "invalid receiver" warning, perform method
lookup as if we were messaging 'id'. */
rtype = rprotos = NULL_TREE;
}
- }
+ }
/* For 'id' or 'Class' receivers, search in the global hash table
if (!method_prototype)
{
if (rprotos)
- warning ("%<%c%s%> not found in protocol(s)",
+ warning (0, "%<%c%E%> not found in protocol(s)",
(class_tree ? '+' : '-'),
- IDENTIFIER_POINTER (sel_name));
+ sel_name);
if (!rtype)
method_prototype
static bool warn_missing_methods = false;
if (rtype)
- warning ("%qs may not respond to %<%c%s%>",
- IDENTIFIER_POINTER (OBJC_TYPE_NAME (rtype)),
+ warning (0, "%qE may not respond to %<%c%E%>",
+ OBJC_TYPE_NAME (rtype),
(class_tree ? '+' : '-'),
- IDENTIFIER_POINTER (sel_name));
+ sel_name);
/* If we are messaging an 'id' or 'Class' object and made it here,
then we have failed to find _any_ instance or class method,
respectively. */
else
- warning ("no %<%c%s%> method found",
+ warning (0, "no %<%c%E%> method found",
(class_tree ? '+' : '-'),
- IDENTIFIER_POINTER (sel_name));
+ sel_name);
if (!warn_missing_methods)
{
- warning ("(Messages without a matching method signature");
- warning ("will be assumed to return %<id%> and accept");
- warning ("%<...%> as arguments.)");
+ warning_at (input_location,
+ 0, "(Messages without a matching method signature");
+ warning_at (input_location,
+ 0, "will be assumed to return %<id%> and accept");
+ warning_at (input_location,
+ 0, "%<...%> as arguments.)");
warn_missing_methods = true;
}
}
These are the object itself and the selector. */
if (flag_typed_selectors)
- selector = build_typed_selector_reference (sel_name, method_prototype);
+ selector = build_typed_selector_reference (input_location,
+ sel_name, method_prototype);
else
- selector = build_selector_reference (sel_name);
+ selector = build_selector_reference (input_location, sel_name);
- retval = build_objc_method_call (super, method_prototype,
+ retval = build_objc_method_call (input_location, super, method_prototype,
receiver,
selector, method_params);
looking up the method on object LOOKUP_OBJECT (often same as OBJECT),
assuming the method has prototype METHOD_PROTOTYPE.
(That is an INSTANCE_METHOD_DECL or CLASS_METHOD_DECL.)
+ LOC is the location of the expression to build.
Use METHOD_PARAMS as list of args to pass to the method.
If SUPER_FLAG is nonzero, we look up the superclass's method. */
static tree
-build_objc_method_call (int super_flag, tree method_prototype,
+build_objc_method_call (location_t loc, int super_flag, tree method_prototype,
tree lookup_object, tree selector,
tree method_params)
{
tree sender = (super_flag ? umsg_super_decl :
(!flag_next_runtime || flag_nil_receivers
- ? umsg_decl
+ ? (flag_objc_direct_dispatch
+ ? umsg_fast_decl
+ : umsg_decl)
: umsg_nonnil_decl));
tree rcv_p = (super_flag ? objc_super_type : objc_object_type);
(method_prototype, METHOD_REF, super_flag)));
tree method, t;
- lookup_object = build_c_cast (rcv_p, lookup_object);
-
+ lookup_object = build_c_cast (loc, rcv_p, lookup_object);
+
/* Use SAVE_EXPR to avoid evaluating the receiver twice. */
lookup_object = save_expr (lookup_object);
method_params = tree_cons (NULL_TREE, lookup_object,
tree_cons (NULL_TREE, selector,
method_params));
- method = build_fold_addr_expr (sender);
+ method = build_fold_addr_expr_loc (input_location, sender);
}
else
{
/* First, call the lookup function to get a pointer to the method,
then cast the pointer, then call it with the method arguments. */
-
+
object = (super_flag ? self_decl : lookup_object);
t = tree_cons (NULL_TREE, selector, NULL_TREE);
t = tree_cons (NULL_TREE, lookup_object, t);
- method = build_function_call (sender, t);
+ method = build_function_call (loc, sender, t);
/* Pass the object to the method. */
method_params = tree_cons (NULL_TREE, object,
/* ??? Selector is not at this point something we can use inside
the compiler itself. Set it to garbage for the nonce. */
- t = build (OBJ_TYPE_REF, sender_cast, method, lookup_object, size_zero_node);
- return build_function_call (t, method_params);
+ t = build3 (OBJ_TYPE_REF, sender_cast, method, lookup_object, size_zero_node);
+ return build_function_call (loc,
+ t, method_params);
}
\f
static void
if (!p)
{
- error ("cannot find protocol declaration for %qs",
- IDENTIFIER_POINTER (protoname));
+ error ("cannot find protocol declaration for %qE",
+ 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);
+ expr = build_unary_op (input_location,
+ ADDR_EXPR, PROTOCOL_FORWARD_DECL (p), 0);
/* ??? Ideally we'd build the reference with objc_protocol_type directly,
if we have it, rather than converting it here. */
/* This function is called by the parser when a @selector() expression
is found, in order to compile it. It is only called by the parser
- and only to compile a @selector(). */
+ and only to compile a @selector(). LOC is the location of the
+ @selector. */
tree
-objc_build_selector_expr (tree selnamelist)
+objc_build_selector_expr (location_t loc, tree selnamelist)
{
tree selname;
/* If still not found, print out a warning. */
if (!hsh)
{
- warning ("undeclared selector %qs", IDENTIFIER_POINTER (selname));
+ warning (0, "undeclared selector %qE", selname);
}
}
if (flag_typed_selectors)
- return build_typed_selector_reference (selname, 0);
+ return build_typed_selector_reference (loc, selname, 0);
else
- return build_selector_reference (selname);
+ return build_selector_reference (loc, selname);
}
tree
encode_type (type, obstack_object_size (&util_obstack),
OBJC_ENCODE_INLINE_DEFS);
obstack_1grow (&util_obstack, 0); /* null terminate string */
- string = obstack_finish (&util_obstack);
+ string = XOBFINISH (&util_obstack, const char *);
/* Synthesize a string that represents the encoded struct/union. */
result = my_build_string (strlen (string) + 1, string);
to an instance variable. It's better to catch the cases
where this is done unknowingly than to support the above
paradigm. */
- warning ("instance variable %qs accessed in class method",
- IDENTIFIER_POINTER (id));
+ warning (0, "instance variable %qE accessed in class method",
+ id);
self_decl = convert (objc_instance_type, self_decl); /* cast */
}
- return build_component_ref (build_indirect_ref (self_decl, "->"), id);
+ return objc_build_component_ref (build_indirect_ref (input_location,
+ self_decl, RO_ARROW),
+ id);
}
\f
/* Compute a hash value for a given method SEL_NAME. */
/* Initialize the hash table used to hold the constant string objects. */
string_htab = htab_create_ggc (31, string_hash,
string_eq, NULL);
+
+ /* Initialize the hash table used to hold EH-volatilized types. */
+ volatilized_htab = htab_create_ggc (31, volatilized_hash,
+ volatilized_eq, NULL);
}
/* WARNING!!!! hash_enter is called with a method, and will peek
return NULL_TREE;
}
+/* Look up a class (if OBJC_LOOKUP_CLASS is set in FLAGS) or instance method
+ in INTERFACE, along with any categories and protocols attached thereto.
+ If method is not found, and the OBJC_LOOKUP_NO_SUPER is _not_ set in FLAGS,
+ recursively examine the INTERFACE's superclass. If OBJC_LOOKUP_CLASS is
+ set, OBJC_LOOKUP_NO_SUPER is cleared, and no suitable class method could
+ be found in INTERFACE or any of its superclasses, look for an _instance_
+ method of the same name in the root class as a last resort.
+
+ If a suitable method cannot be found, return NULL_TREE. */
+
static tree
-lookup_method_static (tree interface, tree ident, int is_class)
+lookup_method_static (tree interface, tree ident, int flags)
{
tree meth = NULL_TREE, root_inter = NULL_TREE;
tree inter = interface;
+ int is_class = (flags & OBJC_LOOKUP_CLASS);
+ int no_superclasses = (flags & OBJC_LOOKUP_NO_SUPER);
while (inter)
{
return meth;
}
+ /* If we were instructed not to look in superclasses, don't. */
+ if (no_superclasses)
+ return NULL_TREE;
+
/* Failing that, climb up the inheritance hierarchy. */
root_inter = inter;
inter = lookup_interface (CLASS_SUPER_NAME (inter));
/* Add the method to the hash list if it doesn't contain an identical
method already. */
+
static void
add_method_to_hash_list (hash *hash_list, tree method)
{
{
/* Check types against those; if different, add to a list. */
attr loop;
- int already_there = comp_proto_with_proto (method, hsh->key);
+ int already_there = comp_proto_with_proto (method, hsh->key, 1);
for (loop = hsh->list; !already_there && loop; loop = loop->next)
- already_there |= comp_proto_with_proto (method, loop->value);
+ already_there |= comp_proto_with_proto (method, loop->value, 1);
if (!already_there)
hash_add_attr (hsh, method);
}
}
static tree
-objc_add_method (tree class, tree method, int is_class)
+objc_add_method (tree klass, tree method, int is_class)
{
tree mth;
if (!(mth = lookup_method (is_class
- ? CLASS_CLS_METHODS (class)
- : CLASS_NST_METHODS (class), method)))
+ ? CLASS_CLS_METHODS (klass)
+ : CLASS_NST_METHODS (klass), method)))
{
/* put method on list in reverse order */
if (is_class)
{
- TREE_CHAIN (method) = CLASS_CLS_METHODS (class);
- CLASS_CLS_METHODS (class) = method;
+ TREE_CHAIN (method) = CLASS_CLS_METHODS (klass);
+ CLASS_CLS_METHODS (klass) = method;
}
else
{
- TREE_CHAIN (method) = CLASS_NST_METHODS (class);
- CLASS_NST_METHODS (class) = method;
+ TREE_CHAIN (method) = CLASS_NST_METHODS (klass);
+ CLASS_NST_METHODS (klass) = method;
}
}
else
and/or return types. We do not do this for @implementations, because
C/C++ will do it for us (i.e., there will be duplicate function
definition errors). */
- if ((TREE_CODE (class) == CLASS_INTERFACE_TYPE
- || TREE_CODE (class) == CATEGORY_INTERFACE_TYPE)
- && !comp_proto_with_proto (method, mth))
- error ("duplicate declaration of method %<%c%s%>",
- is_class ? '+' : '-',
- IDENTIFIER_POINTER (METHOD_SEL_NAME (mth)));
+ if ((TREE_CODE (klass) == CLASS_INTERFACE_TYPE
+ || TREE_CODE (klass) == CATEGORY_INTERFACE_TYPE)
+ && !comp_proto_with_proto (method, mth, 1))
+ error ("duplicate declaration of method %<%c%E%>",
+ is_class ? '+' : '-',
+ METHOD_SEL_NAME (mth));
}
if (is_class)
instance methods listed in @protocol declarations to
the class hash table, on the assumption that @protocols
may be adopted by root classes or categories. */
- if (TREE_CODE (class) == CATEGORY_INTERFACE_TYPE
- || TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE)
- class = lookup_interface (CLASS_NAME (class));
+ if (TREE_CODE (klass) == CATEGORY_INTERFACE_TYPE
+ || TREE_CODE (klass) == CATEGORY_IMPLEMENTATION_TYPE)
+ klass = lookup_interface (CLASS_NAME (klass));
- if (TREE_CODE (class) == PROTOCOL_INTERFACE_TYPE
- || !CLASS_SUPER_NAME (class))
+ if (TREE_CODE (klass) == PROTOCOL_INTERFACE_TYPE
+ || !CLASS_SUPER_NAME (klass))
add_method_to_hash_list (cls_method_hash_list, method);
}
}
static tree
-add_class (tree class)
+add_class (tree class_name, tree name)
{
+ struct interface_tuple **slot;
+
/* Put interfaces on list in reverse order. */
- TREE_CHAIN (class) = interface_chain;
- interface_chain = class;
+ TREE_CHAIN (class_name) = interface_chain;
+ interface_chain = class_name;
+
+ if (interface_htab == NULL)
+ interface_htab = htab_create_ggc (31, hash_interface, eq_interface, NULL);
+ slot = (struct interface_tuple **)
+ htab_find_slot_with_hash (interface_htab, name,
+ IDENTIFIER_HASH_VALUE (name),
+ INSERT);
+ if (!*slot)
+ {
+ *slot = (struct interface_tuple *) ggc_alloc_cleared (sizeof (struct interface_tuple));
+ (*slot)->id = name;
+ }
+ (*slot)->class_name = class_name;
+
return interface_chain;
}
static void
-add_category (tree class, tree category)
+add_category (tree klass, tree category)
{
/* Put categories on list in reverse order. */
- tree cat = lookup_category (class, CLASS_SUPER_NAME (category));
+ tree cat = lookup_category (klass, CLASS_SUPER_NAME (category));
if (cat)
{
- warning ("duplicate interface declaration for category %<%s(%s)%>",
- IDENTIFIER_POINTER (CLASS_NAME (class)),
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (category)));
+ warning (0, "duplicate interface declaration for category %<%E(%E)%>",
+ CLASS_NAME (klass),
+ CLASS_SUPER_NAME (category));
}
else
{
- CLASS_CATEGORY_LIST (category) = CLASS_CATEGORY_LIST (class);
- CLASS_CATEGORY_LIST (class) = category;
+ CLASS_CATEGORY_LIST (category) = CLASS_CATEGORY_LIST (klass);
+ CLASS_CATEGORY_LIST (klass) = 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. */
+ VISIBILITY is 1 for public, 0 for protected, and 2 for private. */
static tree
-add_instance_variable (tree class, int public, tree field_decl)
+add_instance_variable (tree klass, int visibility, tree field_decl)
{
tree field_type = TREE_TYPE (field_decl);
const char *ivar_name = DECL_NAME (field_decl)
- ? IDENTIFIER_POINTER (DECL_NAME (field_decl))
- : "<unnamed>";
+ ? identifier_to_locale (IDENTIFIER_POINTER (DECL_NAME (field_decl)))
+ : _("<unnamed>");
#ifdef OBJCPLUS
if (TREE_CODE (field_type) == REFERENCE_TYPE)
error ("illegal reference type specified for instance variable %qs",
ivar_name);
/* Return class as is without adding this ivar. */
- return class;
+ return klass;
}
#endif
{
error ("instance variable %qs has unknown size", ivar_name);
/* Return class as is without adding this ivar. */
- return class;
+ return klass;
}
#ifdef OBJCPLUS
- /* zlaski 2001-Apr-24: C++ classes with non-trivial constructors and/or destructors
- cannot be ivars; ditto for classes with vtables. */
- if(IS_AGGR_TYPE (field_type) && (TYPE_NEEDS_CONSTRUCTING (field_type)
- || TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type) || TYPE_POLYMORPHIC_P (field_type)))
- {
- const char *type_name = IDENTIFIER_POINTER (OBJC_TYPE_NAME (field_type));
- if(TYPE_POLYMORPHIC_P (field_type)) {
- /* vtable pointers are Real Bad(tm), since Obj-C cannot initialize them */
- error ("type %qs has virtual member functions", type_name);
- error ("illegal aggregate type %qs specified for instance variable %qs",
- type_name, ivar_name);
- /* Return class as is without adding this ivar. */
- return class;
- }
- /* user-defined constructors and destructors are not known to Obj-C and
- hence will not be called. This may or may not be a problem. */
- if (TYPE_NEEDS_CONSTRUCTING (field_type))
- warning ("type %qs has a user-defined constructor", type_name);
- if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type))
- warning ("type %qs has a user-defined destructor", type_name);
- warning ("C++ constructors and destructors will not be invoked for Objective-C fields");
+ /* Check if the ivar being added has a non-POD C++ type. If so, we will
+ need to either (1) warn the user about it or (2) generate suitable
+ constructor/destructor call from '- .cxx_construct' or '- .cxx_destruct'
+ methods (if '-fobjc-call-cxx-cdtors' was specified). */
+ if (MAYBE_CLASS_TYPE_P (field_type)
+ && (TYPE_NEEDS_CONSTRUCTING (field_type)
+ || TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type)
+ || TYPE_POLYMORPHIC_P (field_type)))
+ {
+ tree type_name = OBJC_TYPE_NAME (field_type);
+
+ if (flag_objc_call_cxx_cdtors)
+ {
+ /* Since the ObjC runtime will be calling the constructors and
+ destructors for us, the only thing we can't handle is the lack
+ of a default constructor. */
+ if (TYPE_NEEDS_CONSTRUCTING (field_type)
+ && !TYPE_HAS_DEFAULT_CONSTRUCTOR (field_type))
+ {
+ warning (0, "type %qE has no default constructor to call",
+ type_name);
+
+ /* If we cannot call a constructor, we should also avoid
+ calling the destructor, for symmetry. */
+ if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type))
+ warning (0, "destructor for %qE shall not be run either",
+ type_name);
+ }
+ }
+ else
+ {
+ static bool warn_cxx_ivars = false;
+
+ if (TYPE_POLYMORPHIC_P (field_type))
+ {
+ /* Vtable pointers are Real Bad(tm), since Obj-C cannot
+ initialize them. */
+ error ("type %qE has virtual member functions", type_name);
+ error ("illegal aggregate type %qE specified "
+ "for instance variable %qs",
+ type_name, ivar_name);
+ /* Return class as is without adding this ivar. */
+ return klass;
+ }
+
+ /* User-defined constructors and destructors are not known to Obj-C
+ and hence will not be called. This may or may not be a problem. */
+ if (TYPE_NEEDS_CONSTRUCTING (field_type))
+ warning (0, "type %qE has a user-defined constructor", type_name);
+ if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (field_type))
+ warning (0, "type %qE has a user-defined destructor", type_name);
+
+ if (!warn_cxx_ivars)
+ {
+ warning (0, "C++ constructors and destructors will not "
+ "be invoked for Objective-C fields");
+ warn_cxx_ivars = true;
+ }
+ }
}
#endif
/* Overload the public attribute, it is not used for FIELD_DECLs. */
- switch (public)
+ switch (visibility)
{
case 0:
TREE_PUBLIC (field_decl) = 0;
}
- CLASS_RAW_IVARS (class) = chainon (CLASS_RAW_IVARS (class), field_decl);
+ CLASS_RAW_IVARS (klass) = chainon (CLASS_RAW_IVARS (klass), field_decl);
- return class;
+ return klass;
}
\f
static tree
int
objc_is_public (tree expr, tree identifier)
{
- tree basetype = TREE_TYPE (expr);
- enum tree_code code = TREE_CODE (basetype);
- tree decl;
+ tree basetype, decl;
+
+#ifdef OBJCPLUS
+ if (processing_template_decl)
+ return 1;
+#endif
+
+ if (TREE_TYPE (expr) == error_mark_node)
+ return 1;
+
+ basetype = TYPE_MAIN_VARIANT (TREE_TYPE (expr));
- if (code == RECORD_TYPE)
+ if (basetype && TREE_CODE (basetype) == RECORD_TYPE)
{
if (TYPE_HAS_OBJC_INFO (basetype) && TYPE_OBJC_INTERFACE (basetype))
{
- if (TREE_CODE (TYPE_OBJC_INTERFACE (basetype)) == IDENTIFIER_NODE)
+ tree klass = lookup_interface (OBJC_TYPE_NAME (basetype));
+
+ if (!klass)
{
- error ("cannot find interface declaration for %qs",
- IDENTIFIER_POINTER (OBJC_TYPE_NAME (basetype)));
+ error ("cannot find interface declaration for %qE",
+ OBJC_TYPE_NAME (basetype));
return 0;
}
- if ((decl = is_ivar (TYPE_FIELDS (basetype), identifier)))
+ if ((decl = is_ivar (get_class_ivars (klass, true), identifier)))
{
if (TREE_PUBLIC (decl))
return 1;
all instance variables should be public within the context
of the implementation. */
if (objc_implementation_context
- && (((TREE_CODE (objc_implementation_context)
- == CLASS_IMPLEMENTATION_TYPE)
- || (TREE_CODE (objc_implementation_context)
- == CATEGORY_IMPLEMENTATION_TYPE))
- && (CLASS_NAME (objc_implementation_context)
- == OBJC_TYPE_NAME (basetype))))
+ && ((TREE_CODE (objc_implementation_context)
+ == CLASS_IMPLEMENTATION_TYPE)
+ || (TREE_CODE (objc_implementation_context)
+ == CATEGORY_IMPLEMENTATION_TYPE)))
{
- int private = is_private (decl);
+ tree curtype = TYPE_MAIN_VARIANT
+ (CLASS_STATIC_TEMPLATE
+ (implementation_template));
+
+ if (basetype == curtype
+ || DERIVED_FROM_P (basetype, curtype))
+ {
+ int priv = is_private (decl);
+
+ if (priv)
+ error ("instance variable %qE is declared private",
+ DECL_NAME (decl));
- if (private)
- error ("instance variable %qs is declared private",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- return !private;
+ return !priv;
+ }
}
/* The 2.95.2 compiler sometimes allowed C functions to access
non-@public ivars. We will let this slide for now... */
if (!objc_method_context)
{
- warning ("instance variable %qs is %s; "
+ warning (0, "instance variable %qE is %s; "
"this will be a hard error in the future",
- IDENTIFIER_POINTER (identifier),
+ identifier,
TREE_PRIVATE (decl) ? "@private" : "@protected");
return 1;
}
-
- error ("instance variable %qs is declared %s",
- IDENTIFIER_POINTER (identifier),
+
+ error ("instance variable %qE is declared %s",
+ identifier,
TREE_PRIVATE (decl) ? "private" : "protected");
return 0;
}
}
-
- else if (objc_implementation_context && (basetype == objc_object_reference))
- {
- expr = convert (uprivate_record, expr);
- warning ("static access to object of type %<id%>");
- }
}
return 1;
{
if (TREE_CODE (objc_implementation_context)
== CLASS_IMPLEMENTATION_TYPE)
- warning ("incomplete implementation of class %qs",
- IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context)));
+ warning (0, "incomplete implementation of class %qE",
+ CLASS_NAME (objc_implementation_context));
else if (TREE_CODE (objc_implementation_context)
== CATEGORY_IMPLEMENTATION_TYPE)
- warning ("incomplete implementation of category %qs",
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context)));
+ warning (0, "incomplete implementation of category %qE",
+ CLASS_SUPER_NAME (objc_implementation_context));
first = 0;
}
- warning ("method definition for %<%c%s%> not found",
- mtype, IDENTIFIER_POINTER (METHOD_SEL_NAME (chain)));
+ warning (0, "method definition for %<%c%E%> not found",
+ mtype, METHOD_SEL_NAME (chain));
}
chain = TREE_CHAIN (chain);
return first;
}
-/* Check if CLASS, or its superclasses, explicitly conforms to PROTOCOL. */
+/* Check if KLASS, or its superclasses, explicitly conforms to PROTOCOL. */
static int
-conforms_to_protocol (tree class, tree protocol)
+conforms_to_protocol (tree klass, tree protocol)
{
if (TREE_CODE (protocol) == PROTOCOL_INTERFACE_TYPE)
{
- tree p = CLASS_PROTOCOL_LIST (class);
+ tree p = CLASS_PROTOCOL_LIST (klass);
while (p && TREE_VALUE (p) != protocol)
p = TREE_CHAIN (p);
if (!p)
{
- tree super = (CLASS_SUPER_NAME (class)
- ? lookup_interface (CLASS_SUPER_NAME (class))
+ tree super = (CLASS_SUPER_NAME (klass)
+ ? lookup_interface (CLASS_SUPER_NAME (klass))
: NULL_TREE);
int tmp = super ? conforms_to_protocol (super, protocol) : 0;
if (!tmp)
{
if (TREE_CODE (objc_implementation_context)
== CLASS_IMPLEMENTATION_TYPE)
- warning ("incomplete implementation of class %qs",
- IDENTIFIER_POINTER
- (CLASS_NAME (objc_implementation_context)));
+ warning (0, "incomplete implementation of class %qE",
+ CLASS_NAME (objc_implementation_context));
else if (TREE_CODE (objc_implementation_context)
== CATEGORY_IMPLEMENTATION_TYPE)
- warning ("incomplete implementation of category %qs",
- IDENTIFIER_POINTER
- (CLASS_SUPER_NAME (objc_implementation_context)));
+ warning (0, "incomplete implementation of category %qE",
+ CLASS_SUPER_NAME (objc_implementation_context));
first = 0;
}
- warning ("method definition for %<%c%s%> not found",
- mtype, IDENTIFIER_POINTER (METHOD_SEL_NAME (chain)));
+ warning (0, "method definition for %<%c%E%> not found",
+ mtype, METHOD_SEL_NAME (chain));
}
chain = TREE_CHAIN (chain); /* next method... */
with any protocols that P inherits. */
static void
-check_protocol (tree p, const char *type, const char *name)
+check_protocol (tree p, const char *type, tree name)
{
if (TREE_CODE (p) == PROTOCOL_INTERFACE_TYPE)
{
}
if (!f1 || !f2)
- warning ("%s %qs does not fully implement the %qs protocol",
- type, name, IDENTIFIER_POINTER (PROTOCOL_NAME (p)));
+ warning (0, "%s %qE does not fully implement the %qE protocol",
+ type, name, PROTOCOL_NAME (p));
}
/* Check protocols recursively. */
in PROTO_LIST. */
static void
-check_protocols (tree proto_list, const char *type, const char *name)
+check_protocols (tree proto_list, const char *type, tree name)
{
for ( ; proto_list; proto_list = TREE_CHAIN (proto_list))
{
start_class (enum tree_code code, tree class_name, tree super_name,
tree protocol_list)
{
- tree class, decl;
+ tree klass, decl;
#ifdef OBJCPLUS
if (current_namespace != global_namespace) {
if (objc_implementation_context)
{
- warning ("%<@end%> missing in implementation context");
+ warning (0, "%<@end%> missing in implementation context");
finish_class (objc_implementation_context);
objc_ivar_chain = NULL_TREE;
objc_implementation_context = NULL_TREE;
}
- class = make_node (code);
- TYPE_LANG_SLOT_1 (class) = make_tree_vec (CLASS_LANG_SLOT_ELTS);
+ klass = make_node (code);
+ TYPE_LANG_SLOT_1 (klass) = make_tree_vec (CLASS_LANG_SLOT_ELTS);
- /* Check for existence of the super class, if one was specified. */
+ /* Check for existence of the super class, if one was specified. Note
+ that we must have seen an @interface, not just a @class. If we
+ are looking at a @compatibility_alias, traverse it first. */
if ((code == CLASS_INTERFACE_TYPE || code == CLASS_IMPLEMENTATION_TYPE)
- && super_name && !objc_is_class_name (super_name))
+ && super_name)
{
- error ("cannot find interface declaration for %qs, superclass of %qs",
- IDENTIFIER_POINTER (super_name),
- IDENTIFIER_POINTER (class_name));
- super_name = NULL_TREE;
+ tree super = objc_is_class_name (super_name);
+
+ if (!super || !lookup_interface (super))
+ {
+ error ("cannot find interface declaration for %qE, superclass of %qE",
+ super ? super : super_name,
+ class_name);
+ super_name = NULL_TREE;
+ }
+ else
+ super_name = super;
}
- CLASS_NAME (class) = class_name;
- CLASS_SUPER_NAME (class) = super_name;
- CLASS_CLS_METHODS (class) = NULL_TREE;
+ CLASS_NAME (klass) = class_name;
+ CLASS_SUPER_NAME (klass) = super_name;
+ CLASS_CLS_METHODS (klass) = NULL_TREE;
if (! objc_is_class_name (class_name)
&& (decl = lookup_name (class_name)))
{
- error ("%qs redeclared as different kind of symbol",
- IDENTIFIER_POINTER (class_name));
- error ("%Jprevious declaration of '%D'",
- decl, decl);
+ error ("%qE redeclared as different kind of symbol",
+ class_name);
+ error ("previous declaration of %q+D",
+ decl);
}
if (code == CLASS_IMPLEMENTATION_TYPE)
for (chain = implemented_classes; chain; chain = TREE_CHAIN (chain))
if (TREE_VALUE (chain) == class_name)
{
- error ("reimplementation of class %qs",
- IDENTIFIER_POINTER (class_name));
+ error ("reimplementation of class %qE",
+ class_name);
return error_mark_node;
}
implemented_classes = tree_cons (NULL_TREE, class_name,
/* Reset for multiple classes per file. */
method_slot = 0;
- objc_implementation_context = class;
+ objc_implementation_context = klass;
/* Lookup the interface for this implementation. */
if (!(implementation_template = lookup_interface (class_name)))
{
- warning ("cannot find interface declaration for %qs",
- IDENTIFIER_POINTER (class_name));
- add_class (implementation_template = objc_implementation_context);
+ warning (0, "cannot find interface declaration for %qE",
+ class_name);
+ add_class (implementation_template = objc_implementation_context,
+ class_name);
}
/* If a super class has been specified in the implementation,
&& (super_name != CLASS_SUPER_NAME (implementation_template)))
{
tree previous_name = CLASS_SUPER_NAME (implementation_template);
- const char *const name =
- previous_name ? IDENTIFIER_POINTER (previous_name) : "";
- error ("conflicting super class name %qs",
- IDENTIFIER_POINTER (super_name));
- error ("previous declaration of %qs", name);
+ error ("conflicting super class name %qE",
+ super_name);
+ if (previous_name)
+ error ("previous declaration of %qE", previous_name);
+ else
+ error ("previous declaration");
}
else if (! super_name)
{
if (lookup_interface (class_name))
#ifdef OBJCPLUS
- error ("duplicate interface declaration for class %qs",
+ error ("duplicate interface declaration for class %qE",
#else
- warning ("duplicate interface declaration for class %qs",
-#endif
- IDENTIFIER_POINTER (class_name));
+ warning (0, "duplicate interface declaration for class %qE",
+#endif
+ class_name);
else
- add_class (class);
+ add_class (klass, class_name);
if (protocol_list)
- CLASS_PROTOCOL_LIST (class)
+ CLASS_PROTOCOL_LIST (klass)
= lookup_and_install_protocols (protocol_list);
}
if (!(class_category_is_assoc_with = lookup_interface (class_name)))
{
- error ("cannot find interface declaration for %qs",
- IDENTIFIER_POINTER (class_name));
+ error ("cannot find interface declaration for %qE",
+ class_name);
exit (FATAL_EXIT_CODE);
}
else
- add_category (class_category_is_assoc_with, class);
+ add_category (class_category_is_assoc_with, klass);
if (protocol_list)
- CLASS_PROTOCOL_LIST (class)
+ CLASS_PROTOCOL_LIST (klass)
= lookup_and_install_protocols (protocol_list);
}
/* Reset for multiple classes per file. */
method_slot = 0;
- objc_implementation_context = class;
+ objc_implementation_context = klass;
/* For a category, class_name is really the name of the class that
the following set of methods will be associated with. We must
if (!(implementation_template = lookup_interface (class_name)))
{
- error ("cannot find interface declaration for %qs",
- IDENTIFIER_POINTER (class_name));
+ error ("cannot find interface declaration for %qE",
+ class_name);
exit (FATAL_EXIT_CODE);
}
}
- return class;
+ return klass;
}
static tree
-continue_class (tree class)
+continue_class (tree klass)
{
- if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE
- || TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE)
+ if (TREE_CODE (klass) == CLASS_IMPLEMENTATION_TYPE
+ || TREE_CODE (klass) == CATEGORY_IMPLEMENTATION_TYPE)
{
struct imp_entry *imp_entry;
- tree ivar_context;
/* Check consistency of the instance variables. */
- if (CLASS_RAW_IVARS (class))
- check_ivars (implementation_template, class);
+ if (CLASS_RAW_IVARS (klass))
+ check_ivars (implementation_template, klass);
/* code generation */
build_private_template (implementation_template);
uprivate_record = CLASS_STATIC_TEMPLATE (implementation_template);
- ivar_context = TYPE_FIELDS (uprivate_record);
objc_instance_type = build_pointer_type (uprivate_record);
imp_entry = (struct imp_entry *) ggc_alloc (sizeof (struct imp_entry));
imp_entry->next = imp_list;
- imp_entry->imp_context = class;
+ imp_entry->imp_context = klass;
imp_entry->imp_template = implementation_template;
synth_forward_declarations ();
imp_entry->class_decl = UOBJC_CLASS_decl;
imp_entry->meta_decl = UOBJC_METACLASS_decl;
+ imp_entry->has_cxx_cdtors = 0;
/* Append to front and increment count. */
imp_list = imp_entry;
- if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE)
+ if (TREE_CODE (klass) == CLASS_IMPLEMENTATION_TYPE)
imp_count++;
else
cat_count++;
pop_lang_context ();
#endif /* OBJCPLUS */
- return ivar_context;
+ return get_class_ivars (implementation_template, true);
}
- else if (TREE_CODE (class) == CLASS_INTERFACE_TYPE)
+ else if (TREE_CODE (klass) == CLASS_INTERFACE_TYPE)
{
#ifdef OBJCPLUS
push_lang_context (lang_name_c);
#endif /* OBJCPLUS */
- build_private_template (class);
+ build_private_template (klass);
#ifdef OBJCPLUS
pop_lang_context ();
/* This is called once we see the "@end" in an interface/implementation. */
static void
-finish_class (tree class)
+finish_class (tree klass)
{
- if (TREE_CODE (class) == CLASS_IMPLEMENTATION_TYPE)
+ if (TREE_CODE (klass) == CLASS_IMPLEMENTATION_TYPE)
{
/* All code generation is done in finish_objc. */
if (CLASS_PROTOCOL_LIST (implementation_template))
check_protocols (CLASS_PROTOCOL_LIST (implementation_template),
"class",
- IDENTIFIER_POINTER (CLASS_NAME (objc_implementation_context)));
+ CLASS_NAME (objc_implementation_context));
}
}
- else if (TREE_CODE (class) == CATEGORY_IMPLEMENTATION_TYPE)
+ else if (TREE_CODE (klass) == CATEGORY_IMPLEMENTATION_TYPE)
{
- tree category = lookup_category (implementation_template, CLASS_SUPER_NAME (class));
+ tree category = lookup_category (implementation_template, CLASS_SUPER_NAME (klass));
if (category)
{
if (CLASS_PROTOCOL_LIST (category))
check_protocols (CLASS_PROTOCOL_LIST (category),
"category",
- IDENTIFIER_POINTER (CLASS_SUPER_NAME (objc_implementation_context)));
+ CLASS_SUPER_NAME (objc_implementation_context));
}
}
}
}
else
{
- warning ("duplicate declaration for protocol %qs",
- IDENTIFIER_POINTER (name));
+ warning (0, "duplicate declaration for protocol %qE",
+ name);
}
return protocol;
}
return;
}
- sprintf (buffer, "[" HOST_WIDE_INT_PRINT_DEC,
- (TREE_INT_CST_LOW (an_int_cst)
- / TREE_INT_CST_LOW (TYPE_SIZE (array_of))));
+ if (TREE_INT_CST_LOW (TYPE_SIZE (array_of)) == 0)
+ sprintf (buffer, "[" HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT)0);
+ else
+ sprintf (buffer, "[" HOST_WIDE_INT_PRINT_DEC,
+ TREE_INT_CST_LOW (an_int_cst)
+ / TREE_INT_CST_LOW (TYPE_SIZE (array_of)));
obstack_grow (&util_obstack, buffer, strlen (buffer));
encode_type (array_of, curtype, format);
}
\f
static void
+encode_aggregate_fields (tree type, int pointed_to, int curtype, int format)
+{
+ tree field = TYPE_FIELDS (type);
+
+ for (; field; field = TREE_CHAIN (field))
+ {
+#ifdef OBJCPLUS
+ /* C++ static members, and things that are not field at all,
+ should not appear in the encoding. */
+ if (TREE_CODE (field) != FIELD_DECL || TREE_STATIC (field))
+ continue;
+#endif
+
+ /* Recursively encode fields of embedded base classes. */
+ if (DECL_ARTIFICIAL (field) && !DECL_NAME (field)
+ && TREE_CODE (TREE_TYPE (field)) == RECORD_TYPE)
+ {
+ encode_aggregate_fields (TREE_TYPE (field),
+ pointed_to, curtype, format);
+ continue;
+ }
+
+ if (generating_instance_variables && !pointed_to)
+ {
+ tree fname = DECL_NAME (field);
+
+ obstack_1grow (&util_obstack, '"');
+
+ if (fname && TREE_CODE (fname) == IDENTIFIER_NODE)
+ obstack_grow (&util_obstack,
+ IDENTIFIER_POINTER (fname),
+ strlen (IDENTIFIER_POINTER (fname)));
+
+ obstack_1grow (&util_obstack, '"');
+ }
+
+ encode_field_decl (field, curtype, format);
+ }
+}
+
+static void
encode_aggregate_within (tree type, int curtype, int format, int left,
int right)
{
tree name;
/* NB: aggregates that are pointed to have slightly different encoding
rules in that you never encode the names of instance variables. */
- int pointed_to
- = (obstack_object_size (&util_obstack) > 0
- && *(obstack_next_free (&util_obstack) - 1) == '^');
+ int ob_size = obstack_object_size (&util_obstack);
+ char c1 = ob_size > 1 ? *(obstack_next_free (&util_obstack) - 2) : 0;
+ char c0 = ob_size > 0 ? *(obstack_next_free (&util_obstack) - 1) : 0;
+ int pointed_to = (c0 == '^' || (c1 == '^' && c0 == 'r'));
int inline_contents
= ((format == OBJC_ENCODE_INLINE_DEFS || generating_instance_variables)
- && (!pointed_to || obstack_object_size (&util_obstack) - curtype == 1));
+ && (!pointed_to || ob_size - curtype == (c1 == 'r' ? 2 : 1)));
/* Traverse struct aliases; it is important to get the
original struct and its tag name (if any). */
type = TYPE_MAIN_VARIANT (type);
name = OBJC_TYPE_NAME (type);
- /* Open parenth/bracket. */
+ /* Open parenth/bracket. */
obstack_1grow (&util_obstack, left);
/* Encode the struct/union tag name, or '?' if a tag was
if required. */
if (inline_contents)
{
- tree fields = TYPE_FIELDS (type);
-
obstack_1grow (&util_obstack, '=');
- for (; fields; fields = TREE_CHAIN (fields))
- {
-#ifdef OBJCPLUS
- /* C++ static members, and things that are not fields at all,
- should not appear in the encoding. */
- if (TREE_CODE (fields) != FIELD_DECL || TREE_STATIC (fields))
- continue;
-#endif
- if (generating_instance_variables && !pointed_to)
- {
- tree fname = DECL_NAME (fields);
-
- obstack_1grow (&util_obstack, '"');
- if (fname && TREE_CODE (fname) == IDENTIFIER_NODE)
- obstack_grow (&util_obstack,
- IDENTIFIER_POINTER (fname),
- strlen (IDENTIFIER_POINTER (fname)));
- obstack_1grow (&util_obstack, '"');
- }
- encode_field_decl (fields, curtype, format);
- }
+ encode_aggregate_fields (type, pointed_to, curtype, format);
}
- /* Close parenth/bracket. */
+ /* Close parenth/bracket. */
obstack_1grow (&util_obstack, right);
}
enum tree_code code = TREE_CODE (type);
char c;
+ if (type == error_mark_node)
+ return;
+
if (TYPE_READONLY (type))
obstack_1grow (&util_obstack, 'r');
{
case 8: c = TYPE_UNSIGNED (type) ? 'C' : 'c'; break;
case 16: c = TYPE_UNSIGNED (type) ? 'S' : 's'; break;
- case 32:
+ case 32:
if (type == long_unsigned_type_node
|| type == long_integer_type_node)
c = TYPE_UNSIGNED (type) ? 'L' : 'l';
else if (code == FUNCTION_TYPE) /* '?' */
obstack_1grow (&util_obstack, '?');
+
+ else if (code == COMPLEX_TYPE)
+ {
+ obstack_1grow (&util_obstack, 'j');
+ encode_type (TREE_TYPE (type), curtype, format);
+ }
}
static void
static void
encode_field_decl (tree field_decl, int curtype, int format)
{
- tree type;
-
#ifdef OBJCPLUS
/* C++ static members, and things that are not fields at all,
should not appear in the encoding. */
return;
#endif
- type = TREE_TYPE (field_decl);
-
/* Generate the bitfield typing information, if needed. Note the difference
between GNU and NeXT runtimes. */
if (DECL_BIT_FIELD_TYPE (field_decl))
static void
objc_push_parm (tree parm)
{
+ bool relayout_needed = false;
+
+ if (TREE_TYPE (parm) == error_mark_node)
+ {
+ objc_parmlist = chainon (objc_parmlist, parm);
+ return;
+ }
+
/* Decay arrays and functions into pointers. */
if (TREE_CODE (TREE_TYPE (parm)) == ARRAY_TYPE)
- TREE_TYPE (parm) = build_pointer_type (TREE_TYPE (TREE_TYPE (parm)));
+ {
+ TREE_TYPE (parm) = build_pointer_type (TREE_TYPE (TREE_TYPE (parm)));
+ relayout_needed = true;
+ }
else if (TREE_CODE (TREE_TYPE (parm)) == FUNCTION_TYPE)
- TREE_TYPE (parm) = build_pointer_type (TREE_TYPE (parm));
+ {
+ TREE_TYPE (parm) = build_pointer_type (TREE_TYPE (parm));
+ relayout_needed = true;
+ }
+
+ if (relayout_needed)
+ relayout_decl (parm);
+
- DECL_ARG_TYPE_AS_WRITTEN (parm) = TREE_TYPE (parm);
DECL_ARG_TYPE (parm)
= lang_hooks.types.type_promotes_to (TREE_TYPE (parm));
((TYPE_READONLY (TREE_TYPE (parm)) ? TYPE_QUAL_CONST : 0)
| (TYPE_RESTRICT (TREE_TYPE (parm)) ? TYPE_QUAL_RESTRICT : 0)
| (TYPE_VOLATILE (TREE_TYPE (parm)) ? TYPE_QUAL_VOLATILE : 0), parm);
-
+
objc_parmlist = chainon (objc_parmlist, parm);
}
{
tree next = TREE_CHAIN (parm_info);
- TREE_CHAIN (parm_info) = NULL_TREE;
+ TREE_CHAIN (parm_info) = NULL_TREE;
parm_info = pushdecl (parm_info);
- finish_decl (parm_info, NULL_TREE, NULL_TREE);
+ finish_decl (parm_info, input_location, NULL_TREE, NULL_TREE, NULL_TREE);
parm_info = next;
}
arg_info = get_parm_info (have_ellipsis);
self_type = objc_object_type;
/* id self; */
- objc_push_parm (build_decl (PARM_DECL, self_id, self_type));
+ objc_push_parm (build_decl (input_location,
+ PARM_DECL, self_id, self_type));
/* SEL _cmd; */
- objc_push_parm (build_decl (PARM_DECL, ucmd_id, objc_selector_type));
+ objc_push_parm (build_decl (input_location,
+ PARM_DECL, ucmd_id, objc_selector_type));
}
/* Transform an Objective-C method definition into a static C function
#endif
int have_ellipsis = 0;
+ /* If we are defining a "dealloc" method in a non-root class, we
+ will need to check if a [super dealloc] is missing, and warn if
+ it is. */
+ if(CLASS_SUPER_NAME (objc_implementation_context)
+ && !strcmp ("dealloc", IDENTIFIER_POINTER (METHOD_SEL_NAME (method))))
+ should_call_super_dealloc = 1;
+ else
+ should_call_super_dealloc = 0;
+
/* Required to implement _msgSuper. */
objc_method_context = method;
UOBJC_SUPER_decl = NULL_TREE;
{
tree type = TREE_VALUE (TREE_TYPE (parmlist)), parm;
- parm = build_decl (PARM_DECL, KEYWORD_ARG_NAME (parmlist), type);
+ parm = build_decl (input_location,
+ PARM_DECL, KEYWORD_ARG_NAME (parmlist), type);
objc_push_parm (parm);
parmlist = TREE_CHAIN (parmlist);
}
{
tree akey;
- for (akey = TREE_CHAIN (METHOD_ADD_ARGS (method));
+ for (akey = TREE_CHAIN (METHOD_ADD_ARGS (method));
akey; akey = TREE_CHAIN (akey))
{
objc_push_parm (TREE_VALUE (akey));
}
- if (TREE_OVERFLOW (METHOD_ADD_ARGS (method)))
+ if (METHOD_ADD_ARGS_ELLIPSIS_P (method))
have_ellipsis = 1;
}
really_start_method (objc_method_context, parm_info);
}
-static void
-warn_with_method (const char *message, int mtype, tree method)
-{
- /* Add a readable method name to the warning. */
- warning ("%J%s %<%c%s%>", method,
- message, mtype, gen_method_decl (method));
-}
-
/* Return 1 if TYPE1 is equivalent to TYPE2
for purposes of method overloading. */
return 0;
}
+/* Return 1 if TYPE1 has the same size and alignment as TYPE2. */
+
+static int
+objc_types_share_size_and_alignment (tree type1, tree type2)
+{
+ return (simple_cst_equal (TYPE_SIZE (type1), TYPE_SIZE (type2))
+ && TYPE_ALIGN (type1) == TYPE_ALIGN (type2));
+}
+
/* Return 1 if PROTO1 is equivalent to PROTO2
- for purposes of method overloading. */
+ for purposes of method overloading. Ordinarily, the type signatures
+ should match up exactly, unless STRICT is zero, in which case we
+ shall allow differences in which the size and alignment of a type
+ is the same. */
static int
-comp_proto_with_proto (tree proto1, tree proto2)
+comp_proto_with_proto (tree proto1, tree proto2, int strict)
{
tree type1, type2;
type1 = TREE_VALUE (TREE_TYPE (proto1));
type2 = TREE_VALUE (TREE_TYPE (proto2));
- if (!objc_types_are_equivalent (type1, type2))
+ if (!objc_types_are_equivalent (type1, type2)
+ && (strict || !objc_types_share_size_and_alignment (type1, type2)))
return 0;
/* Compare argument types. */
type1 && type2;
type1 = TREE_CHAIN (type1), type2 = TREE_CHAIN (type2))
{
- if (!objc_types_are_equivalent (TREE_VALUE (type1), TREE_VALUE (type2)))
+ if (!objc_types_are_equivalent (TREE_VALUE (type1), TREE_VALUE (type2))
+ && (strict
+ || !objc_types_share_size_and_alignment (TREE_VALUE (type1),
+ TREE_VALUE (type2))))
return 0;
}
#endif
)
{
- tree fndecl = build_decl (FUNCTION_DECL, name, type);
+ tree fndecl = build_decl (input_location,
+ FUNCTION_DECL, name, type);
#ifdef OBJCPLUS
DECL_ARGUMENTS (fndecl) = params;
cplus_decl_attributes (&fndecl, attrs, 0);
start_preparsed_function (fndecl, attrs, /*flags=*/SF_DEFAULT);
#else
+ current_function_returns_value = 0; /* Assume, until we see it does. */
+ current_function_returns_null = 0;
+
decl_attributes (&fndecl, attrs, 0);
announce_function (fndecl);
DECL_INITIAL (fndecl) = error_mark_node;
push_scope ();
declare_parm_level ();
DECL_RESULT (current_function_decl)
- = build_decl (RESULT_DECL, NULL_TREE,
+ = build_decl (input_location,
+ RESULT_DECL, NULL_TREE,
TREE_TYPE (TREE_TYPE (current_function_decl)));
DECL_ARTIFICIAL (DECL_RESULT (current_function_decl)) = 1;
DECL_IGNORED_P (DECL_RESULT (current_function_decl)) = 1;
tree proto
= lookup_method_static (implementation_template,
METHOD_SEL_NAME (method),
- TREE_CODE (method) == CLASS_METHOD_DECL);
+ ((TREE_CODE (method) == CLASS_METHOD_DECL)
+ | OBJC_LOOKUP_NO_SUPER));
if (proto)
{
- if (!comp_proto_with_proto (method, proto))
+ if (!comp_proto_with_proto (method, proto, 1))
{
- char type = (TREE_CODE (method) == INSTANCE_METHOD_DECL ? '-' : '+');
-
- warn_with_method ("conflicting types for", type, method);
- warn_with_method ("previous declaration of", type, proto);
+ bool type = TREE_CODE (method) == INSTANCE_METHOD_DECL;
+
+ warning_at (DECL_SOURCE_LOCATION (method), 0,
+ "conflicting types for %<%c%s%>",
+ (type ? '-' : '+'),
+ identifier_to_locale (gen_method_decl (method)));
+ inform (DECL_SOURCE_LOCATION (proto),
+ "previous declaration of %<%c%s%>",
+ (type ? '-' : '+'),
+ identifier_to_locale (gen_method_decl (proto)));
}
}
else
if (!UOBJC_SUPER_decl)
{
- UOBJC_SUPER_decl = build_decl (VAR_DECL, get_identifier (TAG_SUPER),
+ UOBJC_SUPER_decl = build_decl (input_location,
+ VAR_DECL, get_identifier (TAG_SUPER),
objc_super_template);
/* This prevents `unused variable' warnings when compiling with -Wall. */
TREE_USED (UOBJC_SUPER_decl) = 1;
lang_hooks.decls.pushdecl (UOBJC_SUPER_decl);
- finish_decl (UOBJC_SUPER_decl, NULL_TREE, NULL_TREE);
+ finish_decl (UOBJC_SUPER_decl, input_location, NULL_TREE, NULL_TREE,
+ NULL_TREE);
UOBJC_SUPER_scope = objc_get_current_scope ();
}
/* Set receiver to self. */
- super_expr = build_component_ref (UOBJC_SUPER_decl, self_id);
- super_expr = build_modify_expr (super_expr, NOP_EXPR, self_decl);
+ super_expr = objc_build_component_ref (UOBJC_SUPER_decl, self_id);
+ super_expr = build_modify_expr (input_location, super_expr, NULL_TREE,
+ NOP_EXPR, input_location, self_decl,
+ NULL_TREE);
super_expr_list = super_expr;
/* Set class to begin searching. */
- super_expr = build_component_ref (UOBJC_SUPER_decl,
- get_identifier ("super_class"));
+ super_expr = objc_build_component_ref (UOBJC_SUPER_decl,
+ get_identifier ("super_class"));
if (TREE_CODE (objc_implementation_context) == CLASS_IMPLEMENTATION_TYPE)
{
/* [_cls, __cls]Super are "pre-built" in
synth_forward_declarations. */
- super_expr = build_modify_expr (super_expr, NOP_EXPR,
+ super_expr = build_modify_expr (input_location, super_expr,
+ NULL_TREE, NOP_EXPR,
+ input_location,
((TREE_CODE (objc_method_context)
== INSTANCE_METHOD_DECL)
? ucls_super_ref
- : uucls_super_ref));
+ : uucls_super_ref),
+ NULL_TREE);
}
else
/* Barf if super used in a category of Object. */
if (!super_name)
{
- error ("no super class declared in interface for %qs",
- IDENTIFIER_POINTER (CLASS_NAME (implementation_template)));
+ error ("no super class declared in interface for %qE",
+ CLASS_NAME (implementation_template));
return error_mark_node;
}
"isa" is the first ivar in a class (which it must be). */
super_class
= build_indirect_ref
- (build_c_cast (build_pointer_type (objc_class_type),
- super_class), "unary *");
+ (input_location,
+ build_c_cast (input_location,
+ build_pointer_type (objc_class_type),
+ super_class), RO_UNARY_STAR);
}
else
{
assemble_external (super_class);
super_class
= build_function_call
- (super_class,
+ (input_location,
+ super_class,
build_tree_list
(NULL_TREE,
- my_build_string (IDENTIFIER_LENGTH (super_name) + 1,
- IDENTIFIER_POINTER (super_name))));
+ my_build_string_pointer
+ (IDENTIFIER_LENGTH (super_name) + 1,
+ IDENTIFIER_POINTER (super_name))));
}
super_expr
- = build_modify_expr (super_expr, NOP_EXPR,
- build_c_cast (TREE_TYPE (super_expr),
- super_class));
+ = build_modify_expr (input_location, super_expr, NULL_TREE,
+ NOP_EXPR,
+ input_location,
+ build_c_cast (input_location,
+ TREE_TYPE (super_expr),
+ super_class),
+ NULL_TREE);
}
- super_expr_list = build_compound_expr (super_expr_list, super_expr);
+ super_expr_list = build_compound_expr (input_location,
+ super_expr_list, super_expr);
- super_expr = build_unary_op (ADDR_EXPR, UOBJC_SUPER_decl, 0);
- super_expr_list = build_compound_expr (super_expr_list, super_expr);
+ super_expr = build_unary_op (input_location,
+ ADDR_EXPR, UOBJC_SUPER_decl, 0);
+ super_expr_list = build_compound_expr (input_location,
+ super_expr_list, super_expr);
return super_expr_list;
}
/* We cannot validly inline ObjC methods, at least not without a language
extension to declare that a method need not be dynamically
dispatched, so suppress all thoughts of doing so. */
- DECL_INLINE (fndecl) = 0;
DECL_UNINLINABLE (fndecl) = 1;
#ifndef OBJCPLUS
/* Required to implement _msgSuper. This must be done AFTER finish_function,
since the optimizer may find "may be used before set" errors. */
objc_method_context = NULL_TREE;
-}
-#if 0
-int
-lang_report_error_function (tree decl)
-{
- if (objc_method_context)
- {
- fprintf (stderr, "In method %qs\n",
- IDENTIFIER_POINTER (METHOD_SEL_NAME (objc_method_context)));
- return 1;
- }
-
- else
- return 0;
+ if (should_call_super_dealloc)
+ warning (0, "method possibly missing a [super dealloc] call");
}
-#endif
/* Given a tree DECL node, produce a printable description of it in the given
buffer, overwriting the buffer. */
sprintf (errbuf + strlen (errbuf), ": " HOST_WIDE_INT_PRINT_DEC,
TREE_INT_CST_LOW (DECL_INITIAL (decl)));
}
-
+
return errbuf;
}
inner = TREE_TYPE (inner);
gen_type_name_0 (inner);
-
+
if (!POINTER_TYPE_P (inner))
strcat (errbuf, " ");
char sz[20];
sprintf (sz, HOST_WIDE_INT_PRINT_DEC,
- (TREE_INT_CST_LOW
+ (TREE_INT_CST_LOW
(TYPE_MAX_VALUE (TYPE_DOMAIN (type))) + 1));
strcat (errbuf, sz);
}
if (TREE_CODE (type) == TYPE_DECL && DECL_NAME (type))
type = DECL_NAME (type);
- strcat (errbuf, IDENTIFIER_POINTER (type));
+ strcat (errbuf, TREE_CODE (type) == IDENTIFIER_NODE
+ ? IDENTIFIER_POINTER (type)
+ : "");
/* For 'id' and 'Class', adopted protocols are stored in the pointee. */
if (objc_is_id (orig))
orig = TREE_TYPE (orig);
-
+
proto = TYPE_HAS_OBJC_INFO (orig) ? TYPE_OBJC_PROTOCOL_LIST (orig) : NULL_TREE;
if (proto)
strcat (errbuf, " <");
while (proto) {
- strcat (errbuf,
+ strcat (errbuf,
IDENTIFIER_POINTER (PROTOCOL_NAME (TREE_VALUE (proto))));
proto = TREE_CHAIN (proto);
strcat (errbuf, proto ? ", " : ">");
chain = TREE_CHAIN (chain);
}
- if (TREE_OVERFLOW (METHOD_ADD_ARGS (method)))
+ if (METHOD_ADD_ARGS_ELLIPSIS_P (method))
strcat (errbuf, ", ...");
}
}
(mangled[1] == 'i' || mangled[1] == 'c') &&
mangled[2] == '_')
{
- cp = demangled = xmalloc(strlen(mangled) + 2);
+ cp = demangled = XNEWVEC (char, strlen(mangled) + 2);
if (mangled[1] == 'i')
*cp++ = '-'; /* for instance method */
else
gcc_obstack_init (&util_obstack);
util_firstobj = (char *) obstack_finish (&util_obstack);
- errbuf = (char *) xmalloc (1024 * 10);
+ errbuf = XNEWVEC (char, 1024 * 10);
hash_init ();
synth_module_prologue ();
}
/* A missing @end may not be detected by the parser. */
if (objc_implementation_context)
{
- warning ("%<@end%> missing in implementation context");
+ warning (0, "%<@end%> missing in implementation context");
finish_class (objc_implementation_context);
objc_ivar_chain = NULL_TREE;
objc_implementation_context = NULL_TREE;
/* all of the following reference the string pool... */
generate_ivar_lists ();
generate_dispatch_tables ();
- generate_shared_structures ();
+ generate_shared_structures (impent->has_cxx_cdtors
+ ? CLS_HAS_CXX_STRUCTORS
+ : 0);
}
else
{
if (protocol_chain)
generate_protocols ();
- if (flag_replace_objc_classes && imp_list)
+ if ((flag_replace_objc_classes && imp_list) || flag_objc_gc)
generate_objc_image_info ();
/* Arrange for ObjC data structures to be initialized at run time. */
for (impent = imp_list; impent; impent = impent->next)
handle_impent (impent);
- /* Dump the string table last. */
-
- generate_strings ();
-
if (warn_selector)
{
int slot;
#endif
/* Make a decl for this name, so we can use its address in a tree. */
- decl = build_decl (VAR_DECL, get_identifier (string), char_type_node);
+ decl = build_decl (input_location,
+ VAR_DECL, get_identifier (string), char_type_node);
DECL_EXTERNAL (decl) = 1;
TREE_PUBLIC (decl) = 1;
sprintf (string, "%sobjc_class_ref_%s",
(flag_next_runtime ? "." : "__"), name);
exp = build1 (ADDR_EXPR, string_type_node, decl);
- decl = build_decl (VAR_DECL, get_identifier (string), string_type_node);
+ decl = build_decl (input_location,
+ VAR_DECL, get_identifier (string), string_type_node);
DECL_INITIAL (decl) = exp;
TREE_STATIC (decl) = 1;
TREE_USED (decl) = 1;
+ /* Force the output of the decl as this forces the reference of the class. */
+ mark_decl_referenced (decl);
pushdecl (decl);
rest_of_decl_compilation (decl, 0, 0);
tree decl, init;
init = build_int_cst (c_common_type_for_size (BITS_PER_WORD, 1), 0);
- decl = build_decl (VAR_DECL, get_identifier (string), TREE_TYPE (init));
+ decl = build_decl (input_location,
+ VAR_DECL, get_identifier (string), TREE_TYPE (init));
TREE_PUBLIC (decl) = 1;
TREE_READONLY (decl) = 1;
TREE_USED (decl) = 1;
generate_objc_image_info (void)
{
tree decl, initlist;
+ int flags
+ = ((flag_replace_objc_classes && imp_list ? 1 : 0)
+ | (flag_objc_gc ? 2 : 0));
decl = start_var_decl (build_array_type
(integer_type_node,
"_OBJC_IMAGE_INFO");
initlist = build_tree_list (NULL_TREE, build_int_cst (NULL_TREE, 0));
- initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, 1), initlist);
+ initlist = tree_cons (NULL_TREE, build_int_cst (NULL_TREE, flags), initlist);
initlist = objc_build_constructor (TREE_TYPE (decl), nreverse (initlist));
finish_var_decl (decl, initlist);
/* In an instance method, a local variable (or parameter) may hide the
instance variable. */
if (TREE_CODE (objc_method_context) == INSTANCE_METHOD_DECL
- && other && other != error_mark_node && !DECL_FILE_SCOPE_P (other))
+ && other && other != error_mark_node
+#ifdef OBJCPLUS
+ && CP_DECL_CONTEXT (other) != global_namespace)
+#else
+ && !DECL_FILE_SCOPE_P (other))
+#endif
{
- warning ("local declaration of %qs hides instance variable",
- IDENTIFIER_POINTER (id));
+ warning (0, "local declaration of %qE hides instance variable",
+ id);
return other;
}
return build_ivar_reference (id);
}
+/* Possibly rewrite a function CALL into an OBJ_TYPE_REF expression. This
+ needs to be done if we are calling a function through a cast. */
+
+tree
+objc_rewrite_function_call (tree function, tree first_param)
+{
+ if (TREE_CODE (function) == NOP_EXPR
+ && TREE_CODE (TREE_OPERAND (function, 0)) == ADDR_EXPR
+ && TREE_CODE (TREE_OPERAND (TREE_OPERAND (function, 0), 0))
+ == FUNCTION_DECL)
+ {
+ function = build3 (OBJ_TYPE_REF, TREE_TYPE (function),
+ TREE_OPERAND (function, 0),
+ first_param, size_zero_node);
+ }
+
+ return function;
+}
+
+/* Look for the special case of OBJC_TYPE_REF with the address of
+ a function in OBJ_TYPE_REF_EXPR (presumably objc_msgSend or one
+ of its cousins). */
+
+int
+objc_gimplify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p)
+{
+ enum gimplify_status r0, r1;
+ if (TREE_CODE (*expr_p) == OBJ_TYPE_REF
+ && TREE_CODE (OBJ_TYPE_REF_EXPR (*expr_p)) == ADDR_EXPR
+ && TREE_CODE (TREE_OPERAND (OBJ_TYPE_REF_EXPR (*expr_p), 0))
+ == FUNCTION_DECL)
+ {
+ /* Postincrements in OBJ_TYPE_REF_OBJECT don't affect the
+ value of the OBJ_TYPE_REF, so force them to be emitted
+ during subexpression evaluation rather than after the
+ OBJ_TYPE_REF. This permits objc_msgSend calls in Objective
+ C to use direct rather than indirect calls when the
+ object expression has a postincrement. */
+ r0 = gimplify_expr (&OBJ_TYPE_REF_OBJECT (*expr_p), pre_p, NULL,
+ is_gimple_val, fb_rvalue);
+ r1 = gimplify_expr (&OBJ_TYPE_REF_EXPR (*expr_p), pre_p, post_p,
+ is_gimple_val, fb_rvalue);
+
+ return MIN (r0, r1);
+ }
+
+#ifdef OBJCPLUS
+ return (enum gimplify_status) cp_gimplify_expr (expr_p, pre_p, post_p);
+#else
+ return (enum gimplify_status) c_gimplify_expr (expr_p, pre_p, post_p);
+#endif
+}
+
#include "gt-objc-objc-act.h"
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