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| 1901 | serge | 1 | /* -*- c++ -*- */ |
| 2 | /* |
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| 3 | * Copyright © 2010 Intel Corporation |
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| 4 | * |
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| 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 6 | * copy of this software and associated documentation files (the "Software"), |
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| 7 | * to deal in the Software without restriction, including without limitation |
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| 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 9 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 10 | * Software is furnished to do so, subject to the following conditions: |
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| 11 | * |
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| 12 | * The above copyright notice and this permission notice (including the next |
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| 13 | * paragraph) shall be included in all copies or substantial portions of the |
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| 14 | * Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 22 | * DEALINGS IN THE SOFTWARE. |
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| 23 | */ |
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| 24 | |||
| 25 | #pragma once |
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| 26 | #ifndef GLSL_SYMBOL_TABLE |
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| 27 | #define GLSL_SYMBOL_TABLE |
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| 28 | |||
| 29 | #include |
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| 30 | |||
| 31 | extern "C" { |
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| 32 | #include "program/symbol_table.h" |
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| 33 | } |
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| 34 | #include "ir.h" |
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| 35 | #include "glsl_types.h" |
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| 36 | |||
| 37 | class symbol_table_entry; |
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| 38 | |||
| 39 | /** |
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| 40 | * Facade class for _mesa_symbol_table |
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| 41 | * |
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| 42 | * Wraps the existing \c _mesa_symbol_table data structure to enforce some |
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| 43 | * type safe and some symbol table invariants. |
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| 44 | */ |
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| 45 | struct glsl_symbol_table { |
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| 46 | private: |
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| 47 | static void |
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| 48 | _glsl_symbol_table_destructor (glsl_symbol_table *table) |
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| 49 | { |
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| 50 | table->~glsl_symbol_table(); |
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| 51 | } |
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| 52 | |||
| 53 | public: |
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| 54 | /* Callers of this ralloc-based new need not call delete. It's |
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| 55 | * easier to just ralloc_free 'ctx' (or any of its ancestors). */ |
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| 56 | static void* operator new(size_t size, void *ctx) |
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| 57 | { |
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| 58 | void *table; |
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| 59 | |||
| 60 | table = ralloc_size(ctx, size); |
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| 61 | assert(table != NULL); |
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| 62 | |||
| 63 | ralloc_set_destructor(table, (void (*)(void*)) _glsl_symbol_table_destructor); |
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| 64 | |||
| 65 | return table; |
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| 66 | } |
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| 67 | |||
| 68 | /* If the user *does* call delete, that's OK, we will just |
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| 69 | * ralloc_free in that case. Here, C++ will have already called the |
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| 70 | * destructor so tell ralloc not to do that again. */ |
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| 71 | static void operator delete(void *table) |
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| 72 | { |
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| 73 | ralloc_set_destructor(table, NULL); |
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| 74 | ralloc_free(table); |
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| 75 | } |
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| 76 | |||
| 77 | glsl_symbol_table(); |
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| 78 | ~glsl_symbol_table(); |
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| 79 | |||
| 80 | unsigned int language_version; |
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| 81 | |||
| 82 | void push_scope(); |
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| 83 | void pop_scope(); |
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| 84 | |||
| 85 | /** |
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| 86 | * Determine whether a name was declared at the current scope |
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| 87 | */ |
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| 88 | bool name_declared_this_scope(const char *name); |
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| 89 | |||
| 90 | /** |
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| 91 | * \name Methods to add symbols to the table |
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| 92 | * |
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| 93 | * There is some temptation to rename all these functions to \c add_symbol |
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| 94 | * or similar. However, this breaks symmetry with the getter functions and |
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| 95 | * reduces the clarity of the intention of code that uses these methods. |
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| 96 | */ |
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| 97 | /*@{*/ |
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| 98 | bool add_variable(ir_variable *v); |
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| 99 | bool add_type(const char *name, const glsl_type *t); |
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| 100 | bool add_function(ir_function *f); |
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| 101 | /*@}*/ |
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| 102 | |||
| 103 | /** |
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| 104 | * Add an function at global scope without checking for scoping conflicts. |
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| 105 | */ |
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| 106 | void add_global_function(ir_function *f); |
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| 107 | |||
| 108 | /** |
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| 109 | * \name Methods to get symbols from the table |
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| 110 | */ |
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| 111 | /*@{*/ |
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| 112 | ir_variable *get_variable(const char *name); |
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| 113 | const glsl_type *get_type(const char *name); |
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| 114 | ir_function *get_function(const char *name); |
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| 115 | /*@}*/ |
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| 116 | |||
| 117 | private: |
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| 118 | symbol_table_entry *get_entry(const char *name); |
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| 119 | |||
| 120 | struct _mesa_symbol_table *table; |
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| 121 | void *mem_ctx; |
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| 122 | }; |
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| 123 | |||
| 124 | #endif /* GLSL_SYMBOL_TABLE */ |