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5bfc7db451
Block objects [1] are a C-level syntactic and runtime feature. They are similar to standard C functions, but in addition to executable code they may also contain variable bindings to automatic (stack) or managed (heap) memory. A block can therefore maintain a set of state (data) that it can use to impact behavior when executed. This port is based on Apple's GCC 5646 with some bugfixes from Apple GCC 5666.3. It has some small differences with the support in clang, which remains the recommended compiler. Perhaps the most notable difference is that in GCC that __block is not actually a keyword, but a macro. There will be workaround for this issue in a near future. Other issues can be consulted in the clang documentation [2] For better compatiblity with Apple's GCC and llvm-gcc some related fixes and features from Apple have been included. Support for the non-standard nested functions in GCC is now off by default. No effort was made to update the ObjC support since FreeBSD doesn't carry ObjC in the base system, but some of the code crept in and was more difficult to remove than to adjust. Reference: [1] https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/Blocks/Articles/00_Introduction.html [2] http://clang.llvm.org/compatibility.html#block-variable-initialization Obtained from: Apple GCC 4.2 MFC after: 3 weeks
589 lines
11 KiB
C
589 lines
11 KiB
C
/* Stub functions for Objective-C and Objective-C++ routines
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that are called from within the C and C++ front-ends,
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respectively.
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Copyright (C) 1991, 1995, 1997, 1998,
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1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tree.h"
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#include "c-common.h"
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tree
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objc_is_class_name (tree ARG_UNUSED (arg))
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{
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return 0;
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}
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tree
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objc_is_id (tree ARG_UNUSED (arg))
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{
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return 0;
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}
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tree
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objc_is_object_ptr (tree ARG_UNUSED (arg))
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{
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return 0;
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}
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/* APPLE LOCAL begin radar 4133425 */
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bool objc_diagnose_private_ivar (tree ARG_UNUSED (arg))
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{
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return false;
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}
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/* APPLE LOCAL end radar 4133425 */
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tree
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objc_lookup_ivar (tree other, tree ARG_UNUSED (arg))
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{
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/* Just use whatever C/C++ found. */
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return other;
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}
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void
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objc_check_decl (tree ARG_UNUSED (decl))
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{
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}
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/* APPLE LOCAL begin radar 4281748 */
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void
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objc_check_global_decl (tree ARG_UNUSED (decl))
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{
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}
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/* APPLE LOCAL end radar 4281748 */
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/* APPLE LOCAL begin radar 4330422 */
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tree
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objc_non_volatilized_type (tree type)
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{
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return type;
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}
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/* APPLE LOCAL end radar 4330422 */
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/* APPLE LOCAL begin radar 4697411 */
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void
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objc_volatilize_component_ref (tree ARG_UNUSED (cref), tree ARG_UNUSED (type))
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{
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}
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/* APPLE LOCAL end radar 4697411 */
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int
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objc_is_reserved_word (tree ARG_UNUSED (ident))
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{
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return 0;
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}
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/* APPLE LOCAL begin 4154928 */
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tree
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objc_common_type (tree ARG_UNUSED (type1), tree ARG_UNUSED (type2))
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{
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return false;
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}
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/* APPLE LOCAL end 4154928 */
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bool
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objc_compare_types (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp),
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/* APPLE LOCAL begin radar 6231433 */
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int ARG_UNUSED (argno), tree ARG_UNUSED (callee),
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const char * ARG_UNUSED (message))
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/* APPLE LOCAL end radar 6231433 */
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{
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return false;
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}
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/* APPLE LOCAL begin radar 4229905 - radar 6231433 */
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bool
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objc_have_common_type (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp),
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int ARG_UNUSED (argno), tree ARG_UNUSED (callee),
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const char * ARG_UNUSED (message))
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{
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return false;
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}
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/* APPLE LOCAL end radar 4229905 - radar 6231433 */
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void
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objc_volatilize_decl (tree ARG_UNUSED (decl))
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{
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}
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bool
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objc_type_quals_match (tree ARG_UNUSED (ltyp), tree ARG_UNUSED (rtyp))
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{
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return false;
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}
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tree
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objc_rewrite_function_call (tree function, tree ARG_UNUSED (params))
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{
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return function;
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}
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tree
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objc_message_selector (void)
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{
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return 0;
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}
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void
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objc_declare_alias (tree ARG_UNUSED (alias), tree ARG_UNUSED (orig))
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{
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}
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void
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objc_declare_class (tree ARG_UNUSED (list))
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{
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}
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void
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/* APPLE LOCAL begin radar 4947311 - protocol attributes */
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objc_declare_protocols (tree ARG_UNUSED (list), tree ARG_UNUSED (attributes))
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{
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}
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void
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objc_start_protocol (tree ARG_UNUSED (proto),
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tree ARG_UNUSED (protorefs),
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tree ARG_UNUSED (attributes))
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{
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}
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/* APPLE LOCAL end radar 4947311 - protocol attributes */
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void
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objc_start_class_interface (tree ARG_UNUSED (name),
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tree ARG_UNUSED (super),
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/* APPLE LOCAL begin radar 4548636 */
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tree ARG_UNUSED (protos),
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tree ARG_UNUSED (attributes))
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/* APPLE LOCAL end radar 4548636 */
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{
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}
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void
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objc_start_category_interface (tree ARG_UNUSED (name),
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tree ARG_UNUSED (categ),
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tree ARG_UNUSED (protos))
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{
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}
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void
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objc_continue_interface (void)
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{
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}
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void
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objc_finish_interface (void)
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{
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}
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void
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objc_add_instance_variable (tree ARG_UNUSED (decl))
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{
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}
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void
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objc_set_visibility (int ARG_UNUSED (vis))
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{
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}
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void
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objc_set_method_type (enum tree_code ARG_UNUSED (code))
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{
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}
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void
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objc_start_class_implementation (tree ARG_UNUSED (name),
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tree ARG_UNUSED (super))
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{
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}
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void
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objc_start_category_implementation (tree ARG_UNUSED (name),
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tree ARG_UNUSED (categ))
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{
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}
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void
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objc_continue_implementation (void)
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{
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}
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void
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objc_clear_super_receiver (void)
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{
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}
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void
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objc_finish_implementation (void)
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{
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}
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void
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/* APPLE LOCAL begin radar 3803157 - objc attribute */
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objc_add_method_declaration (tree ARG_UNUSED (signature),
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tree ARG_UNUSED (attribute))
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/* APPLE LOCAL end radar 3803157 - objc attribute */
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{
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}
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void
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/* APPLE LOCAL begin radar 3803157 - objc attribute */
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objc_start_method_definition (tree ARG_UNUSED (signature),
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tree ARG_UNUSED (attribute))
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/* APPLE LOCAL end radar 3803157 - objc attribute */
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{
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}
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void
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objc_finish_method_definition (tree ARG_UNUSED (fndecl))
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{
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}
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tree
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objc_build_keyword_decl (tree ARG_UNUSED (selector),
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tree ARG_UNUSED (typename),
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/* APPLE LOCAL begin radar 4157812 */
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tree ARG_UNUSED (identifier),
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tree ARG_UNUSED (attribute))
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/* APPLE LOCAL end radar 4157812 */
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{
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return 0;
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}
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tree
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objc_build_method_signature (tree ARG_UNUSED (rettype),
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tree ARG_UNUSED (selectors),
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tree ARG_UNUSED (optparms),
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bool ARG_UNUSED (ellipsis))
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{
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return 0;
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}
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tree
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objc_build_encode_expr (tree ARG_UNUSED (expr))
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{
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return 0;
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}
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tree
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objc_build_protocol_expr (tree ARG_UNUSED (expr))
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{
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return 0;
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}
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tree
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objc_build_selector_expr (tree ARG_UNUSED (expr))
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{
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return 0;
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}
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tree
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objc_build_message_expr (tree ARG_UNUSED (expr))
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{
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return 0;
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}
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tree
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objc_build_string_object (tree ARG_UNUSED (str))
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{
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return 0;
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}
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tree
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objc_get_class_reference (tree ARG_UNUSED (name))
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{
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return 0;
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}
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/* APPLE LOCAL begin radar 4291785 */
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tree
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objc_get_interface_ivars (tree ARG_UNUSED (fieldlist))
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{
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return 0;
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}
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void
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objc_detect_field_duplicates (tree ARG_UNUSED (fieldlist))
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{
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}
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/* APPLE LOCAL end radar 4291785 */
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tree
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objc_get_protocol_qualified_type (tree ARG_UNUSED (name),
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tree ARG_UNUSED (protos))
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{
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return 0;
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}
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int
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objc_static_init_needed_p (void)
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{
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return 0;
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}
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tree
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objc_generate_static_init_call (tree ARG_UNUSED (ctors))
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{
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return 0;
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}
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int
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objc_is_public (tree ARG_UNUSED (expr), tree ARG_UNUSED (identifier))
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{
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return 1;
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}
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/* APPLE LOCAL begin C* language */
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void
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objc_set_method_opt (int ARG_UNUSED (opt))
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{
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}
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tree
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objc_build_component_ref (tree ARG_UNUSED (datum), tree ARG_UNUSED (component))
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{
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return 0;
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}
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tree
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objc_build_foreach_components (tree ARG_UNUSED (receiver),
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tree *ARG_UNUSED (enumState_decl),
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tree *ARG_UNUSED (items_decl),
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tree *ARG_UNUSED (limit_decl),
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tree *ARG_UNUSED (startMutations_decl),
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tree *ARG_UNUSED (counter_decl),
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tree *ARG_UNUSED (countByEnumeratingWithState))
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{
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return 0;
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}
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/* APPLE LOCAL end C* language */
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/* APPLE LOCAL begin C* property (Radar 4436866) */
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void
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objc_set_property_attr (int ARG_UNUSED (code), tree ARG_UNUSED (identifier))
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{
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}
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void
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objc_add_property_variable (tree ARG_UNUSED (prop))
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{
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}
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/* APPLE LOCAL radar 5285911 */
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/* Stub for objc_build_getter_call is removed. */
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tree
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objc_build_setter_call (tree ARG_UNUSED (lhs), tree ARG_UNUSED (rhs))
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{
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return 0;
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}
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/* APPLE LOCAL end C* property (Radar 4436866) */
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tree
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objc_get_class_ivars (tree ARG_UNUSED (name))
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{
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return 0;
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}
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tree
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objc_build_throw_stmt (tree ARG_UNUSED (expr))
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{
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return 0;
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}
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tree
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objc_build_synchronized (location_t ARG_UNUSED (start_locus),
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tree ARG_UNUSED (mutex), tree ARG_UNUSED (body))
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{
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return 0;
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}
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void
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objc_begin_try_stmt (location_t ARG_UNUSED (try_locus), tree ARG_UNUSED (body))
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{
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}
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void
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objc_begin_catch_clause (tree ARG_UNUSED (decl))
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{
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}
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void
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objc_finish_catch_clause (void)
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{
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}
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void
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objc_build_finally_clause (location_t ARG_UNUSED (finally_locus),
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tree ARG_UNUSED (body))
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{
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}
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tree
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objc_finish_try_stmt (void)
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{
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return 0;
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}
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tree
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objc_generate_write_barrier (tree ARG_UNUSED (lhs),
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enum tree_code ARG_UNUSED (modifycode),
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tree ARG_UNUSED (rhs))
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{
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return 0;
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}
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/* APPLE LOCAL begin radar 5276085 */
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void objc_weak_reference_expr (tree* ARG_UNUSED (expr))
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{
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}
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tree
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objc_build_weak_reference_tree (tree expr)
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{
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return expr;
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}
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/* APPLE LOCAL end radar 5276085 */
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/* APPLE LOCAL begin C* warnings to easy porting to new abi */
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void
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diagnose_selector_cast (tree ARG_UNUSED (cast_type), tree ARG_UNUSED (sel_exp))
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{
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}
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/* APPLE LOCAL end C* warnings to easy porting to new abi */
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/* APPLE LOCAL begin radar 4441049 */
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tree
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objc_v2_component_ref_field_offset (tree ARG_UNUSED (exp))
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{
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return 0;
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}
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tree
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objc_v2_bitfield_ivar_bitpos (tree ARG_UNUSED (exp))
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{
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return 0;
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}
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/* APPLE LOCAL end radar 4441049 */
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/* APPLE LOCAL begin radar 4507230 */
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bool
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objc_type_valid_for_messaging (tree ARG_UNUSED (exp))
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{
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return false;
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}
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/* APPLE LOCAL end radar 4507230 */
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/* APPLE LOCAL begin radar 3803157 - objc attribute */
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bool
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objc_method_decl (enum tree_code ARG_UNUSED (opcode))
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{
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return false;
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}
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/* APPLE LOCAL end radar 3803157 - objc attribute */
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/* APPLE LOCAL begin radar 4708210 (for_objc_collection in 4.2) */
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void
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objc_finish_foreach_loop (location_t ARG_UNUSED (location), tree ARG_UNUSED (cond),
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tree ARG_UNUSED (for_body), tree ARG_UNUSED (blab),
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tree ARG_UNUSED (clab))
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{
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return;
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}
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/* APPLE LOCAL end radar 4708210 (for_objc_collection in 4.2) */
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/* APPLE LOCAL begin radar 5847976 */
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int
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objc_is_gcable_type (tree ARG_UNUSED (type))
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{
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return 0;
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}
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/* APPLE LOCAL end radar 5847976 */
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/* APPLE LOCAL begin radar 4592503 */
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void
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objc_checkon_weak_attribute (tree ARG_UNUSED (decl))
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{
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return;
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}
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/* APPLE LOCAL end radar 4592503 */
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/* APPLE LOCAL begin radar 4712269 */
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tree
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objc_build_incr_decr_setter_call (enum tree_code ARG_UNUSED (code),
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tree ARG_UNUSED (lhs),
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tree ARG_UNUSED (inc))
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{
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return NULL_TREE;
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}
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/* APPLE LOCAL end radar 4712269 */
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/* APPLE LOCAL begin objc new property */
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void objc_declare_property_impl (int ARG_UNUSED (code),
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tree ARG_UNUSED (tree_list))
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{
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}
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/* APPLE LOCAL begin radar 5285911 */
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tree
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objc_build_property_reference_expr (tree ARG_UNUSED (datum),
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tree ARG_UNUSED (component))
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{
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return 0;
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}
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bool
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objc_property_reference_expr (tree ARG_UNUSED (exp))
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|
{
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return false;
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}
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/* APPLE LOCAL end radar 5285911 */
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/* APPLE LOCAL end objc new property */
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/* APPLE LOCAL begin radar 4985544 */
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bool
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objc_check_format_nsstring (tree ARG_UNUSED (argument),
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unsigned HOST_WIDE_INT ARG_UNUSED (format_num),
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bool * ARG_UNUSED(no_add_attrs))
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|
{
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return false;
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}
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/* APPLE LOCAL end radar 4985544 */
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|
/* APPLE LOCAL begin radar 5202926 */
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bool
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objc_anonymous_local_objc_name (const char * ARG_UNUSED (name))
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|
{
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return false;
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}
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/* APPLE LOCAL begin radar 5195402 */
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bool
|
|
objc_check_nsstring_pointer_type (tree ARG_UNUSED (type))
|
|
{
|
|
return false;
|
|
}
|
|
/* APPLE LOCAL end radar 5195402 */
|
|
/* APPLE LOCAL end radar 5202926 */
|
|
|
|
/* APPLE LOCAL begin radar 5782740 - blocks */
|
|
bool block_requires_copying (tree exp)
|
|
{
|
|
/* APPLE LOCAL begin radar 6175959 */
|
|
tree type = TREE_TYPE (exp);
|
|
return TREE_CODE (type) == BLOCK_POINTER_TYPE
|
|
|| (POINTER_TYPE_P (type)
|
|
&& lookup_attribute ("NSObject", TYPE_ATTRIBUTES (type)));
|
|
/* APPLE LOCAL end radar 6175959 */
|
|
}
|
|
/* APPLE LOCAL end radar 5782740 - blocks */
|
|
|
|
/* APPLE LOCAL begin radar 5802025 */
|
|
tree objc_build_property_getter_func_call (tree object)
|
|
{
|
|
return object;
|
|
}
|
|
/* APPLE LOCAL end radar 5802025 */
|