| 0,0 → 1,271 |
|---|
| /* -*- 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. |
| */ |
| |
| #include "glsl_symbol_table.h" |
| |
| class symbol_table_entry { |
| 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 *entry = ralloc_size(ctx, size); |
| assert(entry != NULL); |
| return entry; |
| } |
| |
| /* If the user *does* call delete, that's OK, we will just ralloc_free. */ |
| static void operator delete(void *entry) |
| { |
| ralloc_free(entry); |
| } |
| |
| bool add_interface(const glsl_type *i, enum ir_variable_mode mode) |
| { |
| const glsl_type **dest; |
| |
| switch (mode) { |
| case ir_var_uniform: |
| dest = &ibu; |
| break; |
| case ir_var_shader_in: |
| dest = &ibi; |
| break; |
| case ir_var_shader_out: |
| dest = &ibo; |
| break; |
| default: |
| assert(!"Unsupported interface variable mode!"); |
| return false; |
| } |
| |
| if (*dest != NULL) { |
| return false; |
| } else { |
| *dest = i; |
| return true; |
| } |
| } |
| |
| const glsl_type *get_interface(enum ir_variable_mode mode) |
| { |
| switch (mode) { |
| case ir_var_uniform: |
| return ibu; |
| case ir_var_shader_in: |
| return ibi; |
| case ir_var_shader_out: |
| return ibo; |
| default: |
| assert(!"Unsupported interface variable mode!"); |
| return NULL; |
| } |
| } |
| |
| symbol_table_entry(ir_variable *v) : |
| v(v), f(0), t(0), ibu(0), ibi(0), ibo(0), a(0) {} |
| symbol_table_entry(ir_function *f) : |
| v(0), f(f), t(0), ibu(0), ibi(0), ibo(0), a(0) {} |
| symbol_table_entry(const glsl_type *t) : |
| v(0), f(0), t(t), ibu(0), ibi(0), ibo(0), a(0) {} |
| symbol_table_entry(const glsl_type *t, enum ir_variable_mode mode) : |
| v(0), f(0), t(0), ibu(0), ibi(0), ibo(0), a(0) |
| { |
| assert(t->is_interface()); |
| add_interface(t, mode); |
| } |
| symbol_table_entry(const class ast_type_specifier *a): |
| v(0), f(0), t(0), ibu(0), ibi(0), ibo(0), a(a) {} |
| |
| ir_variable *v; |
| ir_function *f; |
| const glsl_type *t; |
| const glsl_type *ibu; |
| const glsl_type *ibi; |
| const glsl_type *ibo; |
| const class ast_type_specifier *a; |
| }; |
| |
| glsl_symbol_table::glsl_symbol_table() |
| { |
| this->separate_function_namespace = false; |
| this->table = _mesa_symbol_table_ctor(); |
| this->mem_ctx = ralloc_context(NULL); |
| } |
| |
| glsl_symbol_table::~glsl_symbol_table() |
| { |
| _mesa_symbol_table_dtor(table); |
| ralloc_free(mem_ctx); |
| } |
| |
| void glsl_symbol_table::push_scope() |
| { |
| _mesa_symbol_table_push_scope(table); |
| } |
| |
| void glsl_symbol_table::pop_scope() |
| { |
| _mesa_symbol_table_pop_scope(table); |
| } |
| |
| bool glsl_symbol_table::name_declared_this_scope(const char *name) |
| { |
| return _mesa_symbol_table_symbol_scope(table, -1, name) == 0; |
| } |
| |
| bool glsl_symbol_table::add_variable(ir_variable *v) |
| { |
| if (this->separate_function_namespace) { |
| /* In 1.10, functions and variables have separate namespaces. */ |
| symbol_table_entry *existing = get_entry(v->name); |
| if (name_declared_this_scope(v->name)) { |
| /* If there's already an existing function (not a constructor!) in |
| * the current scope, just update the existing entry to include 'v'. |
| */ |
| if (existing->v == NULL && existing->t == NULL) { |
| existing->v = v; |
| return true; |
| } |
| } else { |
| /* If not declared at this scope, add a new entry. But if an existing |
| * entry includes a function, propagate that to this block - otherwise |
| * the new variable declaration would shadow the function. |
| */ |
| symbol_table_entry *entry = new(mem_ctx) symbol_table_entry(v); |
| if (existing != NULL) |
| entry->f = existing->f; |
| int added = _mesa_symbol_table_add_symbol(table, -1, v->name, entry); |
| assert(added == 0); |
| (void)added; |
| return true; |
| } |
| return false; |
| } |
| |
| /* 1.20+ rules: */ |
| symbol_table_entry *entry = new(mem_ctx) symbol_table_entry(v); |
| return _mesa_symbol_table_add_symbol(table, -1, v->name, entry) == 0; |
| } |
| |
| bool glsl_symbol_table::add_type(const char *name, const glsl_type *t) |
| { |
| symbol_table_entry *entry = new(mem_ctx) symbol_table_entry(t); |
| return _mesa_symbol_table_add_symbol(table, -1, name, entry) == 0; |
| } |
| |
| static char *make_ast_name(const char *name) |
| { |
| char *ast_name = new char[strlen("#ast.") + strlen(name) + 1]; |
| strcpy(ast_name, "#ast."); |
| strcat(ast_name + strlen("#ast."), name); |
| return ast_name; |
| } |
| |
| bool glsl_symbol_table::add_type_ast(const char *name, const class ast_type_specifier *a) |
| { |
| symbol_table_entry *entry = new(mem_ctx) symbol_table_entry(a); |
| char *ast_name = make_ast_name(name); |
| bool ret = _mesa_symbol_table_add_symbol(table, -1, ast_name, entry) == 0; |
| delete [] ast_name; |
| return ret; |
| } |
| |
| bool glsl_symbol_table::add_interface(const char *name, const glsl_type *i, |
| enum ir_variable_mode mode) |
| { |
| assert(i->is_interface()); |
| symbol_table_entry *entry = get_entry(name); |
| if (entry == NULL) { |
| symbol_table_entry *entry = |
| new(mem_ctx) symbol_table_entry(i, mode); |
| bool add_interface_symbol_result = |
| _mesa_symbol_table_add_symbol(table, -1, name, entry) == 0; |
| assert(add_interface_symbol_result); |
| return add_interface_symbol_result; |
| } else { |
| return entry->add_interface(i, mode); |
| } |
| } |
| |
| bool glsl_symbol_table::add_function(ir_function *f) |
| { |
| if (this->separate_function_namespace && name_declared_this_scope(f->name)) { |
| /* In 1.10, functions and variables have separate namespaces. */ |
| symbol_table_entry *existing = get_entry(f->name); |
| if ((existing->f == NULL) && (existing->t == NULL)) { |
| existing->f = f; |
| return true; |
| } |
| } |
| symbol_table_entry *entry = new(mem_ctx) symbol_table_entry(f); |
| return _mesa_symbol_table_add_symbol(table, -1, f->name, entry) == 0; |
| } |
| |
| void glsl_symbol_table::add_global_function(ir_function *f) |
| { |
| symbol_table_entry *entry = new(mem_ctx) symbol_table_entry(f); |
| int added = _mesa_symbol_table_add_global_symbol(table, -1, f->name, entry); |
| assert(added == 0); |
| (void)added; |
| } |
| |
| ir_variable *glsl_symbol_table::get_variable(const char *name) |
| { |
| symbol_table_entry *entry = get_entry(name); |
| return entry != NULL ? entry->v : NULL; |
| } |
| |
| const glsl_type *glsl_symbol_table::get_type(const char *name) |
| { |
| symbol_table_entry *entry = get_entry(name); |
| return entry != NULL ? entry->t : NULL; |
| } |
| |
| const class ast_type_specifier *glsl_symbol_table::get_type_ast(const char *name) |
| { |
| char *ast_name = make_ast_name(name); |
| symbol_table_entry *entry = get_entry(ast_name); |
| delete [] ast_name; |
| return entry != NULL ? entry->a : NULL; |
| } |
| |
| const glsl_type *glsl_symbol_table::get_interface(const char *name, |
| enum ir_variable_mode mode) |
| { |
| symbol_table_entry *entry = get_entry(name); |
| return entry != NULL ? entry->get_interface(mode) : NULL; |
| } |
| |
| ir_function *glsl_symbol_table::get_function(const char *name) |
| { |
| symbol_table_entry *entry = get_entry(name); |
| return entry != NULL ? entry->f : NULL; |
| } |
| |
| symbol_table_entry *glsl_symbol_table::get_entry(const char *name) |
| { |
| return (symbol_table_entry *) |
| _mesa_symbol_table_find_symbol(table, -1, name); |
| } |