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-rw-r--r--src/glsl/ir_hv_accept.cpp348
1 files changed, 348 insertions, 0 deletions
diff --git a/src/glsl/ir_hv_accept.cpp b/src/glsl/ir_hv_accept.cpp
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+++ b/src/glsl/ir_hv_accept.cpp
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+/*
+ * 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.
+ */
+
+#include "ir.h"
+
+/**
+ * \file ir_hv_accept.cpp
+ * Implementations of all hierarchical visitor accept methods for IR
+ * instructions.
+ */
+
+/**
+ * Process a list of nodes using a hierarchical vistor
+ *
+ * \warning
+ * This function will operate correctly if a node being processed is removed
+ * from list. However, if nodes are added to the list after the node being
+ * processed, some of the added noded may not be processed.
+ */
+static ir_visitor_status
+visit_list_elements(ir_hierarchical_visitor *v, exec_list *l)
+{
+ exec_node *next;
+
+ for (exec_node *n = l->head; n->next != NULL; n = next) {
+ next = n->next;
+
+ ir_instruction *const ir = (ir_instruction *) n;
+ ir_visitor_status s = ir->accept(v);
+
+ if (s != visit_continue)
+ return s;
+ }
+
+ return visit_continue;
+}
+
+
+ir_visitor_status
+ir_variable::accept(ir_hierarchical_visitor *v)
+{
+ return v->visit(this);
+}
+
+
+ir_visitor_status
+ir_loop::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = visit_list_elements(v, &this->body_instructions);
+ if (s == visit_stop)
+ return s;
+
+ if (s != visit_continue_with_parent) {
+ if (this->from) {
+ s = this->from->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+ }
+
+ if (this->to) {
+ s = this->to->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+ }
+
+ if (this->increment) {
+ s = this->increment->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+ }
+ }
+
+ return v->visit_leave(this);
+}
+
+
+ir_visitor_status
+ir_loop_jump::accept(ir_hierarchical_visitor *v)
+{
+ return v->visit(this);
+}
+
+
+ir_visitor_status
+ir_function_signature::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = visit_list_elements(v, &this->body);
+ return (s == visit_stop) ? s : v->visit_leave(this);
+}
+
+
+ir_visitor_status
+ir_function::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = visit_list_elements(v, &this->signatures);
+ return (s == visit_stop) ? s : v->visit_leave(this);
+}
+
+
+ir_visitor_status
+ir_expression::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ for (unsigned i = 0; i < this->get_num_operands(); i++) {
+ switch (this->operands[i]->accept(v)) {
+ case visit_continue:
+ break;
+
+ case visit_continue_with_parent:
+ // I wish for Java's labeled break-statement here.
+ goto done;
+
+ case visit_stop:
+ return s;
+ }
+ }
+
+done:
+ return v->visit_leave(this);
+}
+
+ir_visitor_status
+ir_texture::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = this->sampler->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = this->coordinate->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ if (this->projector) {
+ s = this->projector->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+ }
+
+ if (this->shadow_comparitor) {
+ s = this->shadow_comparitor->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+ }
+
+ switch (this->op) {
+ case ir_tex:
+ break;
+ case ir_txb:
+ s = this->lod_info.bias->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+ break;
+ case ir_txl:
+ case ir_txf:
+ s = this->lod_info.lod->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+ break;
+ case ir_txd:
+ s = this->lod_info.grad.dPdx->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = this->lod_info.grad.dPdy->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+ break;
+ }
+
+ return visit_continue_with_parent;
+}
+
+
+ir_visitor_status
+ir_swizzle::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = this->val->accept(v);
+ return (s == visit_stop) ? s : v->visit_leave(this);
+}
+
+
+ir_visitor_status
+ir_dereference_variable::accept(ir_hierarchical_visitor *v)
+{
+ return v->visit(this);
+}
+
+
+ir_visitor_status
+ir_dereference_array::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = this->array_index->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = this->array->accept(v);
+ return (s == visit_stop) ? s : v->visit_leave(this);
+}
+
+
+ir_visitor_status
+ir_dereference_record::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = this->record->accept(v);
+ return (s == visit_stop) ? s : v->visit_leave(this);
+}
+
+
+ir_visitor_status
+ir_assignment::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = this->lhs->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = this->rhs->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ if (this->condition)
+ s = this->condition->accept(v);
+
+ return (s == visit_stop) ? s : v->visit_leave(this);
+}
+
+
+ir_visitor_status
+ir_constant::accept(ir_hierarchical_visitor *v)
+{
+ return v->visit(this);
+}
+
+
+ir_visitor_status
+ir_call::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = visit_list_elements(v, &this->actual_parameters);
+ if (s == visit_stop)
+ return s;
+
+ return v->visit_leave(this);
+}
+
+
+ir_visitor_status
+ir_return::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ ir_rvalue *val = this->get_value();
+ if (val) {
+ s = val->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+ }
+
+ return v->visit_leave(this);
+}
+
+
+ir_visitor_status
+ir_if::accept(ir_hierarchical_visitor *v)
+{
+ ir_visitor_status s = v->visit_enter(this);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ s = this->condition->accept(v);
+ if (s != visit_continue)
+ return (s == visit_continue_with_parent) ? visit_continue : s;
+
+ if (s != visit_continue_with_parent) {
+ s = visit_list_elements(v, &this->then_instructions);
+ if (s == visit_stop)
+ return s;
+ }
+
+ if (s != visit_continue_with_parent) {
+ s = visit_list_elements(v, &this->else_instructions);
+ if (s == visit_stop)
+ return s;
+ }
+
+ return v->visit_leave(this);
+}
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