| /* -*- 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 "symbol_table.h" |
| #include "ir.h" |
| #include "glsl_types.h" |
| |
| /** |
| * 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. |
| */ |
| class glsl_symbol_table { |
| private: |
| enum glsl_symbol_name_space { |
| glsl_variable_name_space = 0, |
| glsl_type_name_space = 1, |
| glsl_function_name_space = 2 |
| }; |
| |
| public: |
| glsl_symbol_table() |
| { |
| table = _mesa_symbol_table_ctor(); |
| } |
| |
| ~glsl_symbol_table() |
| { |
| _mesa_symbol_table_dtor(table); |
| } |
| |
| void push_scope() |
| { |
| _mesa_symbol_table_push_scope(table); |
| } |
| |
| void pop_scope() |
| { |
| _mesa_symbol_table_pop_scope(table); |
| } |
| |
| /** |
| * Determine whether a name was declared at the current scope |
| */ |
| bool name_declared_this_scope(const char *name) |
| { |
| return _mesa_symbol_table_symbol_scope(table, -1, name) == 0; |
| } |
| |
| /** |
| * \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(const char *name, ir_variable *v) |
| { |
| return _mesa_symbol_table_add_symbol(table, glsl_variable_name_space, |
| name, v) == 0; |
| } |
| |
| bool add_type(const char *name, const glsl_type *t) |
| { |
| return _mesa_symbol_table_add_symbol(table, glsl_type_name_space, |
| name, (void *) t) == 0; |
| } |
| |
| bool add_function(const char *name, ir_function *f) |
| { |
| return _mesa_symbol_table_add_symbol(table, glsl_function_name_space, |
| name, f) == 0; |
| } |
| /*@}*/ |
| |
| /** |
| * \name Methods to get symbols from the table |
| */ |
| /*@{*/ |
| ir_variable *get_variable(const char *name) |
| { |
| return (ir_variable *) |
| _mesa_symbol_table_find_symbol(table, glsl_variable_name_space, name); |
| } |
| |
| glsl_type *get_type(const char *name) |
| { |
| return (glsl_type *) |
| _mesa_symbol_table_find_symbol(table, glsl_type_name_space, name); |
| } |
| |
| ir_function *get_function(const char *name) |
| { |
| return (ir_function *) |
| _mesa_symbol_table_find_symbol(table, glsl_function_name_space, name); |
| } |
| /*@}*/ |
| |
| private: |
| struct _mesa_symbol_table *table; |
| }; |
| |
| #endif /* GLSL_SYMBOL_TABLE */ |