1 /* -*- c++ -*- */ 2 /* 3 * Copyright 2010 Intel Corporation 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22 * DEALINGS IN THE SOFTWARE. 23 */ 24 25 #ifndef GLSL_SYMBOL_TABLE 26 #define GLSL_SYMBOL_TABLE 27 28 #include <new> 29 30 #include "program/symbol_table.h" 31 #include "ir.h" 32 33 class symbol_table_entry; 34 struct glsl_type; 35 36 /** 37 * Facade class for _mesa_symbol_table 38 * 39 * Wraps the existing \c _mesa_symbol_table data structure to enforce some 40 * type safe and some symbol table invariants. 41 */ 42 struct glsl_symbol_table { 43 DECLARE_RALLOC_CXX_OPERATORS(glsl_symbol_table) 44 45 glsl_symbol_table(); 46 ~glsl_symbol_table(); 47 48 /* In 1.10, functions and variables have separate namespaces. */ 49 bool separate_function_namespace; 50 51 void push_scope(); 52 void pop_scope(); 53 54 /** 55 * Determine whether a name was declared at the current scope 56 */ 57 bool name_declared_this_scope(const char *name); 58 59 /** 60 * \name Methods to add symbols to the table 61 * 62 * There is some temptation to rename all these functions to \c add_symbol 63 * or similar. However, this breaks symmetry with the getter functions and 64 * reduces the clarity of the intention of code that uses these methods. 65 */ 66 /*@{*/ 67 bool add_variable(ir_variable *v); 68 bool add_type(const char *name, const glsl_type *t); 69 bool add_function(ir_function *f); 70 bool add_interface(const char *name, const glsl_type *i, 71 enum ir_variable_mode mode); 72 bool add_default_precision_qualifier(const char *type_name, int precision); 73 /*@}*/ 74 75 /** 76 * Add an function at global scope without checking for scoping conflicts. 77 */ 78 void add_global_function(ir_function *f); 79 80 /** 81 * \name Methods to get symbols from the table 82 */ 83 /*@{*/ 84 ir_variable *get_variable(const char *name); 85 const glsl_type *get_type(const char *name); 86 ir_function *get_function(const char *name); 87 const glsl_type *get_interface(const char *name, 88 enum ir_variable_mode mode); 89 int get_default_precision_qualifier(const char *type_name); 90 /*@}*/ 91 92 /** 93 * Disable a previously-added variable so that it no longer appears to be 94 * in the symbol table. This is necessary when gl_PerVertex is redeclared, 95 * to ensure that previously-available built-in variables are no longer 96 * available. 97 */ 98 void disable_variable(const char *name); 99 100 /** 101 * Replaces the variable in the entry by the new variable. 102 */ 103 void replace_variable(const char *name, ir_variable *v); 104 105 private: 106 symbol_table_entry *get_entry(const char *name); 107 108 struct _mesa_symbol_table *table; 109 void *mem_ctx; 110 void *linalloc; 111 }; 112 113 #endif /* GLSL_SYMBOL_TABLE */ 114
