| /* -*- 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" |
| #include "glsl_types.h" |
| |
| class symbol_table_entry; |
| |
| /** |
| * 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 { |
| private: |
| static void |
| _glsl_symbol_table_destructor (glsl_symbol_table *table) |
| { |
| table->~glsl_symbol_table(); |
| } |
| |
| public: |
| /* Callers of this ralloc-based new need not call delete. It's |
| * easier to just ralloc_free 'ctx' (or any of its ancestors). */ |
| static void* operator new(size_t size, void *ctx) |
| { |
| void *table; |
| |
| table = ralloc_size(ctx, size); |
| assert(table != NULL); |
| |
| ralloc_set_destructor(table, (void (*)(void*)) _glsl_symbol_table_destructor); |
| |
| return table; |
| } |
| |
| /* If the user *does* call delete, that's OK, we will just |
| * ralloc_free in that case. Here, C++ will have already called the |
| * destructor so tell ralloc not to do that again. */ |
| static void operator delete(void *table) |
| { |
| ralloc_set_destructor(table, NULL); |
| ralloc_free(table); |
| } |
| |
| glsl_symbol_table(); |
| ~glsl_symbol_table(); |
| |
| unsigned int language_version; |
| |
| 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_uniform_block(struct gl_uniform_block *u); |
| /*@}*/ |
| |
| /** |
| * 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); |
| /*@}*/ |
| |
| private: |
| symbol_table_entry *get_entry(const char *name); |
| |
| struct _mesa_symbol_table *table; |
| void *mem_ctx; |
| }; |
| |
| #endif /* GLSL_SYMBOL_TABLE */ |