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Diffstat (limited to 'mesalib/src/mesa/shader/slang/slang_compile_operation.c')
-rw-r--r--mesalib/src/mesa/shader/slang/slang_compile_operation.c332
1 files changed, 332 insertions, 0 deletions
diff --git a/mesalib/src/mesa/shader/slang/slang_compile_operation.c b/mesalib/src/mesa/shader/slang/slang_compile_operation.c
new file mode 100644
index 000000000..3e2bdbc91
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile_operation.c
@@ -0,0 +1,332 @@
+/*
+ * 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->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;
+ 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)
+ _mesa_memcpy(ops, *array, pos * sizeof(slang_operation));
+ if (pos < *numElements)
+ _mesa_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);
+ }
+}
+
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