src/glsl/ir_rvalue_visitor.h

   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
  33 class ir_rvalue_base_visitor : public ir_hierarchical_visitor {
  34 public:
  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_discard *);
  40    ir_visitor_status rvalue_visit(ir_expression *);
  41    ir_visitor_status rvalue_visit(ir_if *);
  42    ir_visitor_status rvalue_visit(ir_return *);
  43    ir_visitor_status rvalue_visit(ir_swizzle *);
  44    ir_visitor_status rvalue_visit(ir_texture *);
  45    ir_visitor_status rvalue_visit(ir_emit_vertex *);
  46    ir_visitor_status rvalue_visit(ir_end_primitive *);
  47
  48    virtual void handle_rvalue(ir_rvalue **rvalue) = 0;
  49 };
  50
  51 class ir_rvalue_visitor : public ir_rvalue_base_visitor {
  52 public:
  53
  54    virtual ir_visitor_status visit_leave(ir_assignment *);
  55    virtual ir_visitor_status visit_leave(ir_call *);
  56    virtual ir_visitor_status visit_leave(ir_dereference_array *);
  57    virtual ir_visitor_status visit_leave(ir_dereference_record *);
  58    virtual ir_visitor_status visit_leave(ir_discard *);
  59    virtual ir_visitor_status visit_leave(ir_expression *);
  60    virtual ir_visitor_status visit_leave(ir_if *);
  61    virtual ir_visitor_status visit_leave(ir_return *);
  62    virtual ir_visitor_status visit_leave(ir_swizzle *);
  63    virtual ir_visitor_status visit_leave(ir_texture *);
  64    virtual ir_visitor_status visit_leave(ir_emit_vertex *);
  65    virtual ir_visitor_status visit_leave(ir_end_primitive *);
  66 };
  67
  68 class ir_rvalue_enter_visitor : public ir_rvalue_base_visitor {
  69 public:
  70
  71    virtual ir_visitor_status visit_enter(ir_assignment *);
  72    virtual ir_visitor_status visit_enter(ir_call *);
  73    virtual ir_visitor_status visit_enter(ir_dereference_array *);
  74    virtual ir_visitor_status visit_enter(ir_dereference_record *);
  75    virtual ir_visitor_status visit_enter(ir_discard *);
  76    virtual ir_visitor_status visit_enter(ir_expression *);
  77    virtual ir_visitor_status visit_enter(ir_if *);
  78    virtual ir_visitor_status visit_enter(ir_return *);
  79    virtual ir_visitor_status visit_enter(ir_swizzle *);
  80    virtual ir_visitor_status visit_enter(ir_texture *);
  81    virtual ir_visitor_status visit_enter(ir_emit_vertex *);
  82    virtual ir_visitor_status visit_enter(ir_end_primitive *);
  83 };