1 files changed, 110 insertions, 0 deletions
diff --git a/src/compiler/glsl/glsl_symbol_table.h b/src/compiler/glsl/glsl_symbol_table.h
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index 00000000000..5d654e5e6a7
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+++ b/src/compiler/glsl/glsl_symbol_table.h
@@ -0,0 +1,110 @@
+/* -*- 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 GLSL_SYMBOL_TABLE
+#define GLSL_SYMBOL_TABLE
+
+#include <new>
+
+extern "C" {
+#include "program/symbol_table.h"
+}
+#include "ir.h"
+
+class symbol_table_entry;
+struct glsl_type;
+
+/**
+ * Facade class for _mesa_symbol_table
+ *
+ * Wraps the existing \c _mesa_symbol_table data structure to enforce some
+ * type safe and some symbol table invariants.
+ */
+struct glsl_symbol_table {
+   DECLARE_RALLOC_CXX_OPERATORS(glsl_symbol_table)
+
+   glsl_symbol_table();
+   ~glsl_symbol_table();
+
+   /* In 1.10, functions and variables have separate namespaces. */
+   bool separate_function_namespace;
+
+   void push_scope();
+   void pop_scope();
+
+   /**
+    * Determine whether a name was declared at the current scope
+    */
+   bool name_declared_this_scope(const char *name);
+
+   /**
+    * \name Methods to add symbols to the table
+    *
+    * There is some temptation to rename all these functions to \c add_symbol
+    * or similar.  However, this breaks symmetry with the getter functions and
+    * reduces the clarity of the intention of code that uses these methods.
+    */
+   /*@{*/
+   bool add_variable(ir_variable *v);
+   bool add_type(const char *name, const glsl_type *t);
+   bool add_function(ir_function *f);
+   bool add_interface(const char *name, const glsl_type *i,
+                      enum ir_variable_mode mode);
+   bool add_default_precision_qualifier(const char *type_name, int precision);
+   /*@}*/
+
+   /**
+    * Add an function at global scope without checking for scoping conflicts.
+    */
+   void add_global_function(ir_function *f);
+
+   /**
+    * \name Methods to get symbols from the table
+    */
+   /*@{*/
+   ir_variable *get_variable(const char *name);
+   const glsl_type *get_type(const char *name);
+   ir_function *get_function(const char *name);
+   const glsl_type *get_interface(const char *name,
+                                  enum ir_variable_mode mode);
+   int get_default_precision_qualifier(const char *type_name);
+   /*@}*/
+
+   /**
+    * Disable a previously-added variable so that it no longer appears to be
+    * in the symbol table.  This is necessary when gl_PerVertex is redeclared,
+    * to ensure that previously-available built-in variables are no longer
+    * available.
+    */
+   void disable_variable(const char *name);
+
+private:
+   symbol_table_entry *get_entry(const char *name);
+
+   struct _mesa_symbol_table *table;
+   void *mem_ctx;
+};
+
+#endif /* GLSL_SYMBOL_TABLE */