diff options
Diffstat (limited to 'src/mesa/slang/slang_compile_variable.c')
| -rw-r--r-- | src/mesa/slang/slang_compile_variable.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/src/mesa/slang/slang_compile_variable.c b/src/mesa/slang/slang_compile_variable.c new file mode 100644 index 0000000000..23c08a9039 --- /dev/null +++ b/src/mesa/slang/slang_compile_variable.c @@ -0,0 +1,247 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5.3 + * + * Copyright (C) 2005-2007 Brian Paul All Rights Reserved. + * + * 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 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 + * BRIAN PAUL 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. + */ + +/** + * \file slang_compile_variable.c + * slang front-end compiler + * \author Michal Krol + */ + +#include "main/imports.h" +#include "slang_compile.h" +#include "slang_mem.h" + + +static slang_variable * +slang_variable_new(void) +{ + slang_variable *v = (slang_variable *) _slang_alloc(sizeof(slang_variable)); + if (v) { + if (!slang_variable_construct(v)) { + _slang_free(v); + v = NULL; + } + } + return v; +} + + +static void +slang_variable_delete(slang_variable * var) +{ + slang_variable_destruct(var); + _slang_free(var); +} + + +/* + * slang_variable_scope + */ + +slang_variable_scope * +_slang_variable_scope_new(slang_variable_scope *parent) +{ + slang_variable_scope *s; + s = (slang_variable_scope *) _slang_alloc(sizeof(slang_variable_scope)); + if (s) + s->outer_scope = parent; + return s; +} + + +GLvoid +_slang_variable_scope_ctr(slang_variable_scope * self) +{ + self->variables = NULL; + self->num_variables = 0; + self->outer_scope = NULL; +} + +void +slang_variable_scope_destruct(slang_variable_scope * scope) +{ + unsigned int i; + + if (!scope) + return; + for (i = 0; i < scope->num_variables; i++) { + if (scope->variables[i]) + slang_variable_delete(scope->variables[i]); + } + _slang_free(scope->variables); + /* do not free scope->outer_scope */ +} + +int +slang_variable_scope_copy(slang_variable_scope * x, + const slang_variable_scope * y) +{ + slang_variable_scope z; + unsigned int i; + + _slang_variable_scope_ctr(&z); + z.variables = (slang_variable **) + _slang_alloc(y->num_variables * sizeof(slang_variable *)); + if (z.variables == NULL) { + slang_variable_scope_destruct(&z); + return 0; + } + for (z.num_variables = 0; z.num_variables < y->num_variables; + z.num_variables++) { + z.variables[z.num_variables] = slang_variable_new(); + if (!z.variables[z.num_variables]) { + slang_variable_scope_destruct(&z); + return 0; + } + } + for (i = 0; i < z.num_variables; i++) { + if (!slang_variable_copy(z.variables[i], y->variables[i])) { + slang_variable_scope_destruct(&z); + return 0; + } + } + z.outer_scope = y->outer_scope; + slang_variable_scope_destruct(x); + *x = z; + return 1; +} + + +/** + * Grow the variable list by one. + * \return pointer to space for the new variable (will be initialized) + */ +slang_variable * +slang_variable_scope_grow(slang_variable_scope *scope) +{ + const int n = scope->num_variables; + scope->variables = (slang_variable **) + _slang_realloc(scope->variables, + n * sizeof(slang_variable *), + (n + 1) * sizeof(slang_variable *)); + if (!scope->variables) + return NULL; + + scope->num_variables++; + + scope->variables[n] = slang_variable_new(); + if (!scope->variables[n]) + return NULL; + + return scope->variables[n]; +} + + + +/* slang_variable */ + +int +slang_variable_construct(slang_variable * var) +{ + if (!slang_fully_specified_type_construct(&var->type)) + return 0; + var->a_name = SLANG_ATOM_NULL; + var->array_len = 0; + var->initializer = NULL; + var->size = 0; + var->isTemp = GL_FALSE; + var->store = NULL; + var->declared = 0; + return 1; +} + + +void +slang_variable_destruct(slang_variable * var) +{ + slang_fully_specified_type_destruct(&var->type); + if (var->initializer != NULL) { + slang_operation_destruct(var->initializer); + _slang_free(var->initializer); + } +#if 0 + if (var->aux) { + free(var->aux); + } +#endif +} + + +int +slang_variable_copy(slang_variable * x, const slang_variable * y) +{ + slang_variable z; + + if (!slang_variable_construct(&z)) + return 0; + if (!slang_fully_specified_type_copy(&z.type, &y->type)) { + slang_variable_destruct(&z); + return 0; + } + z.a_name = y->a_name; + z.array_len = y->array_len; + if (y->initializer != NULL) { + z.initializer + = (slang_operation *) _slang_alloc(sizeof(slang_operation)); + if (z.initializer == NULL) { + slang_variable_destruct(&z); + return 0; + } + if (!slang_operation_construct(z.initializer)) { + _slang_free(z.initializer); + slang_variable_destruct(&z); + return 0; + } + if (!slang_operation_copy(z.initializer, y->initializer)) { + slang_variable_destruct(&z); + return 0; + } + } + z.size = y->size; + slang_variable_destruct(x); + *x = z; + return 1; +} + + +/** + * Search for named variable in given scope. + * \param all if true, search parent scopes too. + */ +slang_variable * +_slang_variable_locate(const slang_variable_scope * scope, + const slang_atom a_name, GLboolean all) +{ + while (scope) { + GLuint i; + for (i = 0; i < scope->num_variables; i++) + if (a_name == scope->variables[i]->a_name) + return scope->variables[i]; + if (all) + scope = scope->outer_scope; + else + scope = NULL; + } + return NULL; +} |