diff options
| author | Michal Krol <mjkrol@gmail.org> | 2005-01-21 15:51:28 +0000 |
|---|---|---|
| committer | Michal Krol <mjkrol@gmail.org> | 2005-01-21 15:51:28 +0000 |
| commit | b39665950e7eadc691065b9955bb97c32cf7beef (patch) | |
| tree | 09ffe3f5a262385dfd6cc65a3cb8938c1f1aabf0 /src/mesa/shader/slang | |
| parent | e51b0b1d3072719090f8df3c6673d99fbbbf5a73 (diff) | |
Handy TIntermTraverser class wrapper
Diffstat (limited to 'src/mesa/shader/slang')
| -rw-r--r-- | src/mesa/shader/slang/traverse_wrap.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/src/mesa/shader/slang/traverse_wrap.h b/src/mesa/shader/slang/traverse_wrap.h new file mode 100644 index 0000000000..f0cc761086 --- /dev/null +++ b/src/mesa/shader/slang/traverse_wrap.h @@ -0,0 +1,112 @@ +/*
+ * Mesa 3-D graphics library
+ * Version: 6.3
+ *
+ * Copyright (C) 2005 Brian Paul All Rights Reserved.
+ *
+ * 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 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
+ * BRIAN PAUL 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.
+ */
+
+/**
+ * \file traverse_wrap.h
+ * Handy TIntermTraverser class wrapper
+ * \author Michal Krol
+ */
+
+#ifndef __TRAVERSE_WRAP_H__
+#define __TRAVERSE_WRAP_H__
+
+#include "Include/intermediate.h"
+
+/*
+ The original TIntermTraverser class that is used to walk the intermediate tree,
+ is not very elegant in its design. One must define static functions with
+ appropriate prototypes, construct TIntermTraverser object, and set its member
+ function pointers to one's static functions. If traversal-specific data
+ is needed, a new class must be derived, and one must up-cast the object
+ passed as a parameter to the static function.
+
+ The class below eliminates this burden by providing virtual methods that are
+ to be overridden in the derived class.
+*/
+
+class traverse_wrap: private TIntermTraverser
+{
+private:
+ static void _visitSymbol (TIntermSymbol *S, TIntermTraverser *T) {
+ static_cast<traverse_wrap *> (T)->Symbol (*S);
+ }
+ static void _visitConstantUnion (TIntermConstantUnion *U, TIntermTraverser *T) {
+ static_cast<traverse_wrap *> (T)->ConstantUnion (*U);
+ }
+ static bool _visitBinary (bool preVisit, TIntermBinary *B, TIntermTraverser *T) {
+ return static_cast<traverse_wrap *> (T)->Binary (preVisit, *B);
+ }
+ static bool _visitUnary (bool preVisit, TIntermUnary *U, TIntermTraverser *T) {
+ return static_cast<traverse_wrap *> (T)->Unary (preVisit, *U);
+ }
+ static bool _visitSelection (bool preVisit, TIntermSelection *S, TIntermTraverser *T) {
+ return static_cast<traverse_wrap *> (T)->Selection (preVisit, *S);
+ }
+ static bool _visitAggregate (bool preVisit, TIntermAggregate *A, TIntermTraverser *T) {
+ return static_cast<traverse_wrap *> (T)->Aggregate (preVisit, *A);
+ }
+ static bool _visitLoop (bool preVisit, TIntermLoop *L, TIntermTraverser *T) {
+ return static_cast<traverse_wrap *> (T)->Loop (preVisit, *L);
+ }
+ static bool _visitBranch (bool preVisit, TIntermBranch *B, TIntermTraverser *T) {
+ return static_cast<traverse_wrap *> (T)->Branch (preVisit, *B);
+ }
+public:
+ traverse_wrap () {
+ visitSymbol = _visitSymbol;
+ visitConstantUnion = _visitConstantUnion;
+ visitBinary = _visitBinary;
+ visitUnary = _visitUnary;
+ visitSelection = _visitSelection;
+ visitAggregate = _visitAggregate;
+ visitLoop = _visitLoop;
+ visitBranch = _visitBranch;
+ }
+protected:
+ virtual void Symbol (const TIntermSymbol &) {
+ }
+ virtual void ConstantUnion (const TIntermConstantUnion &) {
+ }
+ virtual bool Binary (bool, const TIntermBinary &) {
+ return true;
+ }
+ virtual bool Unary (bool, const TIntermUnary &) {
+ return true;
+ }
+ virtual bool Selection (bool, const TIntermSelection &) {
+ return true;
+ }
+ virtual bool Aggregate (bool, const TIntermAggregate &) {
+ return true;
+ }
+ virtual bool Loop (bool, const TIntermLoop &) {
+ return true;
+ }
+ virtual bool Branch (bool, const TIntermBranch &) {
+ return true;
+ }
+};
+
+#endif
+
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