/* -*- 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); /*@}*/ /** * 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 */