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/*
* 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 "imports.h"
#include "slang_compile.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->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_alloc_free(oper->children);
/*#define FREE_MEMORY*/
#ifdef FREE_MEMORY
/* XXX revisit and fix memory coruption here ! */
slang_variable_scope_destruct(oper->locals);
slang_alloc_free(oper->locals);
#endif
oper->children = NULL;
oper->num_children = 0;
oper->locals = NULL;
}
/**
* Recursively copy a slang_operation node.
* \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;
z.children = (slang_operation *)
slang_alloc_malloc(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;
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;
}
}
#if 0
z.var = y->var;
z.fun = y->fun;
#endif
slang_operation_destruct(x);
*x = z;
return GL_TRUE;
}
slang_operation *
slang_operation_new(GLuint count)
{
slang_operation *ops
= (slang_operation *) _mesa_malloc(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);
_mesa_free(oper);
}
slang_operation *
slang_operation_grow(GLuint *numChildren, slang_operation **children)
{
slang_operation *ops;
ops = (slang_operation *)
slang_alloc_realloc(*children,
*numChildren * sizeof(slang_operation),
(*numChildren + 1) * sizeof(slang_operation));
if (ops) {
slang_operation *newOp = ops + *numChildren;
if (!slang_operation_construct(newOp)) {
_mesa_free(ops);
*children = NULL;
return NULL;
}
*children = ops;
(*numChildren)++;
return newOp;
}
return NULL;
}
/**
* Insert a new slang_operation into an array.
* \param numChildren pointer to current number of children (in/out)
* \param children address of array (in/out)
* \param pos position to insert
* \return pointer to the new operation
*/
slang_operation *
slang_operation_insert(GLuint *numChildren, slang_operation **children,
GLuint pos)
{
slang_operation *ops;
assert(pos <= *numChildren);
ops = (slang_operation *)
_mesa_malloc((*numChildren + 1) * sizeof(slang_operation));
if (ops) {
slang_operation *newOp;
newOp = ops + pos;
if (pos > 0)
_mesa_memcpy(ops, *children, pos * sizeof(slang_operation));
if (pos < *numChildren)
_mesa_memcpy(newOp + 1, (*children) + pos,
(*numChildren - pos) * sizeof(slang_operation));
if (!slang_operation_construct(newOp)) {
_mesa_free(ops);
*numChildren = 0;
*children = NULL;
return NULL;
}
*children = ops;
(*numChildren)++;
return newOp;
}
return NULL;
}
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