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/* This file contains the definitions and documentation for the
additional tree codes used in the Objective C front end (see tree.def
for the standard codes).
Copyright (C) 1990, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2007, 2010
Free Software Foundation, Inc.
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 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* Objective-C types. */
DEFTREECODE (CLASS_INTERFACE_TYPE, "class_interface_type", tcc_type, 0)
DEFTREECODE (CLASS_IMPLEMENTATION_TYPE, "class_implementation_type",
tcc_type, 0)
DEFTREECODE (CATEGORY_INTERFACE_TYPE, "category_interface_type", tcc_type, 0)
DEFTREECODE (CATEGORY_IMPLEMENTATION_TYPE,"category_implementation_type",
tcc_type, 0)
DEFTREECODE (PROTOCOL_INTERFACE_TYPE, "protocol_interface_type", tcc_type, 0)
/* Objective-C decls. */
DEFTREECODE (KEYWORD_DECL, "keyword_decl", tcc_declaration, 0)
DEFTREECODE (INSTANCE_METHOD_DECL, "instance_method_decl", tcc_declaration, 0)
DEFTREECODE (CLASS_METHOD_DECL, "class_method_decl", tcc_declaration, 0)
DEFTREECODE (PROPERTY_DECL, "property_decl", tcc_declaration, 0)
/* Objective-C expressions. */
DEFTREECODE (MESSAGE_SEND_EXPR, "message_send_expr", tcc_expression, 3)
DEFTREECODE (CLASS_REFERENCE_EXPR, "class_reference_expr", tcc_expression, 1)
/* This tree is used to represent the expression 'object.property',
where 'object' is an Objective-C object and 'property' is an
Objective-C property. Operand 0 is the object (the tree
representing the expression), and Operand 1 is the property (the
PROPERTY_DECL). Operand 2 is the 'getter' call, ready to be used;
we pregenerate it because it is hard to generate it properly later
on. Operand 3 records whether using the 'getter' call should
generate a deprecation warning or not.
A PROPERTY_REF tree needs to be transformed into 'setter' and
'getter' calls at some point; at the moment this happens in two
places:
* if we detect that a modify expression is being applied to a
PROPERTY_REF, then we transform that into a 'getter' call (this
happens in build_modify_expr() or cp_build_modify_expr()).
* else, it will remain as a PROPERTY_REF until we get to
gimplification; at that point, we convert each PROPERTY_REF into
a 'getter' call during ObjC/ObjC++ gimplify. At that point, it
is quite hard to build a 'getter' call, but we have already built
it and we just need to swap Operand 2 in, and emit the deprecation
warnings from Operand 3 if needed.
Please note that when the Objective-C 2.0 "dot-syntax" 'object.component'
is encountered, where 'component' is not a property but there are valid
setter/getter methods for it, an artificial PROPERTY_DECL is generated
and used in the PROPERTY_REF. */
DEFTREECODE (PROPERTY_REF, "property_ref", tcc_expression, 4)
/*
Local variables:
mode:c
End:
*/
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