| 0,0 → 1,91 |
|---|
| /* -*- c++ -*- */ |
| /* |
| * Copyright © 2010 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #pragma once |
| #ifndef IR_VISITOR_H |
| #define IR_VISITOR_H |
| |
| #ifdef __cplusplus |
| /** |
| * Abstract base class of visitors of IR instruction trees |
| */ |
| class ir_visitor { |
| public: |
| virtual ~ir_visitor() |
| { |
| /* empty */ |
| } |
| |
| /** |
| * \name Visit methods |
| * |
| * As typical for the visitor pattern, there must be one \c visit method for |
| * each concrete subclass of \c ir_instruction. Virtual base classes within |
| * the hierarchy should not have \c visit methods. |
| */ |
| /*@{*/ |
| virtual void visit(class ir_rvalue *) { assert(!"unhandled error_type"); } |
| virtual void visit(class ir_variable *) = 0; |
| virtual void visit(class ir_function_signature *) = 0; |
| virtual void visit(class ir_function *) = 0; |
| virtual void visit(class ir_expression *) = 0; |
| virtual void visit(class ir_texture *) = 0; |
| virtual void visit(class ir_swizzle *) = 0; |
| virtual void visit(class ir_dereference_variable *) = 0; |
| virtual void visit(class ir_dereference_array *) = 0; |
| virtual void visit(class ir_dereference_record *) = 0; |
| virtual void visit(class ir_assignment *) = 0; |
| virtual void visit(class ir_constant *) = 0; |
| virtual void visit(class ir_call *) = 0; |
| virtual void visit(class ir_return *) = 0; |
| virtual void visit(class ir_discard *) = 0; |
| virtual void visit(class ir_if *) = 0; |
| virtual void visit(class ir_loop *) = 0; |
| virtual void visit(class ir_loop_jump *) = 0; |
| virtual void visit(class ir_emit_vertex *) = 0; |
| virtual void visit(class ir_end_primitive *) = 0; |
| /*@}*/ |
| }; |
| |
| /* NOTE: function calls may never return due to discards inside them |
| * This is usually not an issue, but if it is, keep it in mind |
| */ |
| class ir_control_flow_visitor : public ir_visitor { |
| public: |
| virtual void visit(class ir_variable *) {} |
| virtual void visit(class ir_expression *) {} |
| virtual void visit(class ir_texture *) {} |
| virtual void visit(class ir_swizzle *) {} |
| virtual void visit(class ir_dereference_variable *) {} |
| virtual void visit(class ir_dereference_array *) {} |
| virtual void visit(class ir_dereference_record *) {} |
| virtual void visit(class ir_assignment *) {} |
| virtual void visit(class ir_constant *) {} |
| virtual void visit(class ir_call *) {} |
| virtual void visit(class ir_emit_vertex *) {} |
| virtual void visit(class ir_end_primitive *) {} |
| }; |
| #endif /* __cplusplus */ |
| |
| #endif /* IR_VISITOR_H */ |