glsl: move to compiler/

Signed-off-by: Emil Velikov <[email protected]>
Acked-by: Matt Turner <[email protected]>
Acked-by: Jose Fonseca <[email protected]>

1 files changed, 93 insertions, 0 deletions

diff --git a/src/compiler/glsl/ir_visitor.h b/src/compiler/glsl/ir_visitor.h
new file mode 100644
index 00000000000..7c38481cd53
--- /dev/null
+++ b/src/compiler/glsl/ir_visitor.h
@@ -0,0 +1,93 @@
+/* -*- 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;
+   virtual void visit(class ir_barrier *) = 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 *) {}
+   virtual void visit(class ir_barrier *) {}
+};
+#endif /* __cplusplus */
+
+#endif /* IR_VISITOR_H */