1/*
2 * Copyright © 2010 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24/**
25 * \file ir_rvalue_visitor.h
26 *
27 * Generic class to implement the common pattern we have of wanting to
28 * visit each ir_rvalue * and possibly change that node to a different
29 * class.  Just implement handle_rvalue() and you will be called with
30 * a pointer to each rvalue in the tree.
31 */
32
33class ir_rvalue_base_visitor : public ir_hierarchical_visitor {
34public:
35   ir_visitor_status rvalue_visit(ir_assignment *);
36   ir_visitor_status rvalue_visit(ir_call *);
37   ir_visitor_status rvalue_visit(ir_dereference_array *);
38   ir_visitor_status rvalue_visit(ir_dereference_record *);
39   ir_visitor_status rvalue_visit(ir_expression *);
40   ir_visitor_status rvalue_visit(ir_if *);
41   ir_visitor_status rvalue_visit(ir_return *);
42   ir_visitor_status rvalue_visit(ir_swizzle *);
43   ir_visitor_status rvalue_visit(ir_texture *);
44
45   virtual void handle_rvalue(ir_rvalue **rvalue) = 0;
46};
47
48class ir_rvalue_visitor : public ir_rvalue_base_visitor {
49public:
50
51   virtual ir_visitor_status visit_leave(ir_assignment *);
52   virtual ir_visitor_status visit_leave(ir_call *);
53   virtual ir_visitor_status visit_leave(ir_dereference_array *);
54   virtual ir_visitor_status visit_leave(ir_dereference_record *);
55   virtual ir_visitor_status visit_leave(ir_expression *);
56   virtual ir_visitor_status visit_leave(ir_if *);
57   virtual ir_visitor_status visit_leave(ir_return *);
58   virtual ir_visitor_status visit_leave(ir_swizzle *);
59   virtual ir_visitor_status visit_leave(ir_texture *);
60};
61
62class ir_rvalue_enter_visitor : public ir_rvalue_base_visitor {
63public:
64
65   virtual ir_visitor_status visit_enter(ir_assignment *);
66   virtual ir_visitor_status visit_enter(ir_call *);
67   virtual ir_visitor_status visit_enter(ir_dereference_array *);
68   virtual ir_visitor_status visit_enter(ir_dereference_record *);
69   virtual ir_visitor_status visit_enter(ir_expression *);
70   virtual ir_visitor_status visit_enter(ir_if *);
71   virtual ir_visitor_status visit_enter(ir_return *);
72   virtual ir_visitor_status visit_enter(ir_swizzle *);
73   virtual ir_visitor_status visit_enter(ir_texture *);
74};
75