77 lines
3.3 KiB
Modula-2
77 lines
3.3 KiB
Modula-2
/* This file contains the definitions and documentation for the
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additional tree codes used in the Objective C front end (see tree.def
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for the standard codes).
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Copyright (C) 1990-2023 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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License 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 COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* Objective-C types. */
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DEFTREECODE (CLASS_INTERFACE_TYPE, "class_interface_type", tcc_type, 0)
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DEFTREECODE (CLASS_IMPLEMENTATION_TYPE, "class_implementation_type",
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tcc_type, 0)
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DEFTREECODE (CATEGORY_INTERFACE_TYPE, "category_interface_type", tcc_type, 0)
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DEFTREECODE (CATEGORY_IMPLEMENTATION_TYPE,"category_implementation_type",
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tcc_type, 0)
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DEFTREECODE (PROTOCOL_INTERFACE_TYPE, "protocol_interface_type", tcc_type, 0)
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/* Objective-C decls. */
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DEFTREECODE (KEYWORD_DECL, "keyword_decl", tcc_declaration, 0)
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DEFTREECODE (INSTANCE_METHOD_DECL, "instance_method_decl", tcc_declaration, 0)
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DEFTREECODE (CLASS_METHOD_DECL, "class_method_decl", tcc_declaration, 0)
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DEFTREECODE (PROPERTY_DECL, "property_decl", tcc_declaration, 0)
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/* Objective-C expressions. */
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DEFTREECODE (MESSAGE_SEND_EXPR, "message_send_expr", tcc_expression, 3)
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DEFTREECODE (CLASS_REFERENCE_EXPR, "class_reference_expr", tcc_expression, 1)
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/* This tree is used to represent the expression 'object.property',
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where 'object' is an Objective-C object and 'property' is an
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Objective-C property. Operand 0 is the object (the tree
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representing the expression), and Operand 1 is the property (the
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PROPERTY_DECL). Operand 2 is the 'getter' call, ready to be used;
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we pregenerate it because it is hard to generate it properly later
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on. Operand 3 records whether using the 'getter' call should
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generate a deprecation warning or not.
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A PROPERTY_REF tree needs to be transformed into 'setter' and
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'getter' calls at some point; at the moment this happens in two
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places:
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* if we detect that a modify expression is being applied to a
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PROPERTY_REF, then we transform that into a 'getter' call (this
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happens in build_modify_expr() or cp_build_modify_expr()).
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* else, it will remain as a PROPERTY_REF until we get to
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gimplification; at that point, we convert each PROPERTY_REF into
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a 'getter' call during ObjC/ObjC++ gimplify. At that point, it
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is quite hard to build a 'getter' call, but we have already built
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it and we just need to swap Operand 2 in, and emit the deprecation
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warnings from Operand 3 if needed.
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Please note that when the Objective-C 2.0 "dot-syntax" 'object.component'
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is encountered, where 'component' is not a property but there are valid
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setter/getter methods for it, an artificial PROPERTY_DECL is generated
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and used in the PROPERTY_REF. */
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DEFTREECODE (PROPERTY_REF, "property_ref", tcc_expression, 4)
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/*
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Local variables:
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mode:c
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End:
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*/
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