3 * Copyright © 2010 Intel Corporation
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
31 * Abstract base class of visitors of IR instruction trees
43 * As typical for the visitor pattern, there must be one \c visit method for
44 * each concrete subclass of \c ir_instruction. Virtual base classes within
45 * the hierarchy should not have \c visit methods.
48 virtual void visit(class ir_rvalue
*) { assert(!"unhandled error_type"); }
49 virtual void visit(class ir_variable
*) = 0;
50 virtual void visit(class ir_function_signature
*) = 0;
51 virtual void visit(class ir_function
*) = 0;
52 virtual void visit(class ir_expression
*) = 0;
53 virtual void visit(class ir_texture
*) = 0;
54 virtual void visit(class ir_swizzle
*) = 0;
55 virtual void visit(class ir_dereference_variable
*) = 0;
56 virtual void visit(class ir_dereference_array
*) = 0;
57 virtual void visit(class ir_dereference_record
*) = 0;
58 virtual void visit(class ir_assignment
*) = 0;
59 virtual void visit(class ir_constant
*) = 0;
60 virtual void visit(class ir_call
*) = 0;
61 virtual void visit(class ir_return
*) = 0;
62 virtual void visit(class ir_discard
*) = 0;
63 virtual void visit(class ir_if
*) = 0;
64 virtual void visit(class ir_loop
*) = 0;
65 virtual void visit(class ir_loop_jump
*) = 0;
66 virtual void visit(class ir_emit_vertex
*) = 0;
67 virtual void visit(class ir_end_primitive
*) = 0;
71 /* NOTE: function calls may never return due to discards inside them
72 * This is usually not an issue, but if it is, keep it in mind
74 class ir_control_flow_visitor
: public ir_visitor
{
76 virtual void visit(class ir_variable
*) {}
77 virtual void visit(class ir_expression
*) {}
78 virtual void visit(class ir_texture
*) {}
79 virtual void visit(class ir_swizzle
*) {}
80 virtual void visit(class ir_dereference_variable
*) {}
81 virtual void visit(class ir_dereference_array
*) {}
82 virtual void visit(class ir_dereference_record
*) {}
83 virtual void visit(class ir_assignment
*) {}
84 virtual void visit(class ir_constant
*) {}
85 virtual void visit(class ir_call
*) {}
86 virtual void visit(class ir_emit_vertex
*) {}
87 virtual void visit(class ir_end_primitive
*) {}
89 #endif /* __cplusplus */
91 #endif /* IR_VISITOR_H */