diff options
Diffstat (limited to 'src/mesa/slang/slang_compile_operation.c')
| -rw-r--r-- | src/mesa/slang/slang_compile_operation.c | 334 |
1 files changed, 334 insertions, 0 deletions
diff --git a/src/mesa/slang/slang_compile_operation.c b/src/mesa/slang/slang_compile_operation.c new file mode 100644 index 0000000000..5441d60df5 --- /dev/null +++ b/src/mesa/slang/slang_compile_operation.c @@ -0,0 +1,334 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5.2 + * + * Copyright (C) 2005-2006 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_operation.c + * slang front-end compiler + * \author Michal Krol + */ + +#include "main/imports.h" +#include "slang_compile.h" +#include "slang_mem.h" + + +/** + * Init a slang_operation object + */ +GLboolean +slang_operation_construct(slang_operation * oper) +{ + oper->type = SLANG_OPER_NONE; + oper->children = NULL; + oper->num_children = 0; + oper->literal[0] = 0.0; + oper->literal_size = 1; + oper->array_constructor = GL_FALSE; + oper->a_id = SLANG_ATOM_NULL; + oper->a_obj = SLANG_ATOM_NULL; + oper->locals = _slang_variable_scope_new(NULL); + if (oper->locals == NULL) + return GL_FALSE; + _slang_variable_scope_ctr(oper->locals); + oper->fun = NULL; + oper->var = NULL; + oper->label = NULL; + return GL_TRUE; +} + +void +slang_operation_destruct(slang_operation * oper) +{ + GLuint i; + + for (i = 0; i < oper->num_children; i++) + slang_operation_destruct(oper->children + i); + _slang_free(oper->children); + slang_variable_scope_destruct(oper->locals); + _slang_free(oper->locals); + oper->children = NULL; + oper->num_children = 0; + oper->locals = NULL; +} + + +/** + * Recursively traverse 'oper', replacing occurances of 'oldScope' with + * 'newScope' in the oper->locals->outer_scope field. + */ +void +slang_replace_scope(slang_operation *oper, + slang_variable_scope *oldScope, + slang_variable_scope *newScope) +{ + GLuint i; + + if (oper->locals != newScope && + oper->locals->outer_scope == oldScope) { + /* found. replace old w/ new */ + oper->locals->outer_scope = newScope; + } + + if (oper->type == SLANG_OPER_VARIABLE_DECL) { + /* search/replace in the initializer */ + slang_variable *var; + var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE); + if (var && var->initializer) { + slang_replace_scope(var->initializer, oldScope, newScope); + } + } + + /* search/replace in children */ + for (i = 0; i < oper->num_children; i++) { + slang_replace_scope(&oper->children[i], oldScope, newScope); + } +} + + +/** + * Recursively copy a slang_operation node. + * \param x copy target + * \param y copy source + * \return GL_TRUE for success, GL_FALSE if failure + */ +GLboolean +slang_operation_copy(slang_operation * x, const slang_operation * y) +{ + slang_operation z; + GLuint i; + + if (!slang_operation_construct(&z)) + return GL_FALSE; + z.type = y->type; + if (y->num_children > 0) { + z.children = (slang_operation *) + _slang_alloc(y->num_children * sizeof(slang_operation)); + if (z.children == NULL) { + slang_operation_destruct(&z); + return GL_FALSE; + } + } + for (z.num_children = 0; z.num_children < y->num_children; + z.num_children++) { + if (!slang_operation_construct(&z.children[z.num_children])) { + slang_operation_destruct(&z); + return GL_FALSE; + } + } + for (i = 0; i < z.num_children; i++) { + if (!slang_operation_copy(&z.children[i], &y->children[i])) { + slang_operation_destruct(&z); + return GL_FALSE; + } + } + z.literal[0] = y->literal[0]; + z.literal[1] = y->literal[1]; + z.literal[2] = y->literal[2]; + z.literal[3] = y->literal[3]; + z.literal_size = y->literal_size; + assert(y->literal_size >= 1); + assert(y->literal_size <= 4); + z.a_id = y->a_id; + if (y->locals) { + if (!slang_variable_scope_copy(z.locals, y->locals)) { + slang_operation_destruct(&z); + return GL_FALSE; + } + } + + /* update scoping for children */ + for (i = 0; i < y->num_children; i++) { + if (y->children[i].locals && + y->children[i].locals->outer_scope == y->locals) { + z.children[i].locals->outer_scope = z.locals; + } + } + +#if 0 + z.var = y->var; + z.fun = y->fun; +#endif + slang_operation_destruct(x); + *x = z; + + /* If this operation declares a new scope, we need to make sure + * all children point to it, not the original operation's scope! + */ + if (x->type == SLANG_OPER_BLOCK_NEW_SCOPE || + x->type == SLANG_OPER_WHILE || + x->type == SLANG_OPER_FOR) { + slang_replace_scope(x, y->locals, x->locals); + } + + return GL_TRUE; +} + + +slang_operation * +slang_operation_new(GLuint count) +{ + slang_operation *ops + = (slang_operation *) _slang_alloc(count * sizeof(slang_operation)); + assert(count > 0); + if (ops) { + GLuint i; + for (i = 0; i < count; i++) + slang_operation_construct(ops + i); + } + return ops; +} + + +/** + * Delete operation and all children + */ +void +slang_operation_delete(slang_operation *oper) +{ + slang_operation_destruct(oper); + _slang_free(oper); +} + + +void +slang_operation_free_children(slang_operation *oper) +{ + GLuint i; + for (i = 0; i < slang_oper_num_children(oper); i++) { + slang_operation *child = slang_oper_child(oper, i); + slang_operation_destruct(child); + } + _slang_free(oper->children); + oper->children = NULL; + oper->num_children = 0; +} + + +slang_operation * +slang_operation_grow(GLuint *numChildren, slang_operation **children) +{ + slang_operation *ops; + + ops = (slang_operation *) + _slang_realloc(*children, + *numChildren * sizeof(slang_operation), + (*numChildren + 1) * sizeof(slang_operation)); + if (ops) { + slang_operation *newOp = ops + *numChildren; + if (!slang_operation_construct(newOp)) { + _slang_free(ops); + *children = NULL; + return NULL; + } + *children = ops; + (*numChildren)++; + return newOp; + } + return NULL; +} + +/** + * Insert a new slang_operation into an array. + * \param numElements pointer to current array size (in/out) + * \param array address of the array (in/out) + * \param pos position to insert new element + * \return pointer to the new operation/element + */ +slang_operation * +slang_operation_insert(GLuint *numElements, slang_operation **array, + GLuint pos) +{ + slang_operation *ops; + + assert(pos <= *numElements); + + ops = (slang_operation *) + _slang_alloc((*numElements + 1) * sizeof(slang_operation)); + if (ops) { + slang_operation *newOp; + newOp = ops + pos; + if (pos > 0) + memcpy(ops, *array, pos * sizeof(slang_operation)); + if (pos < *numElements) + memcpy(newOp + 1, (*array) + pos, + (*numElements - pos) * sizeof(slang_operation)); + + if (!slang_operation_construct(newOp)) { + _slang_free(ops); + *numElements = 0; + *array = NULL; + return NULL; + } + if (*array) + _slang_free(*array); + *array = ops; + (*numElements)++; + return newOp; + } + return NULL; +} + + +/** + * Add/insert new child into given node at given position. + * \return pointer to the new child node + */ +slang_operation * +slang_operation_insert_child(slang_operation *oper, GLuint pos) +{ + slang_operation *newOp; + + newOp = slang_operation_insert(&oper->num_children, + &oper->children, + pos); + if (newOp) { + newOp->locals->outer_scope = oper->locals; + } + + return newOp; +} + + +void +_slang_operation_swap(slang_operation *oper0, slang_operation *oper1) +{ + slang_operation tmp = *oper0; + *oper0 = *oper1; + *oper1 = tmp; +} + + +void +slang_operation_add_children(slang_operation *oper, GLuint num_children) +{ + GLuint i; + assert(oper->num_children == 0); + assert(oper->children == NULL); + oper->num_children = num_children; + oper->children = slang_operation_new(num_children); + for (i = 0; i < num_children; i++) { + oper->children[i].locals = _slang_variable_scope_new(oper->locals); + } +} + |