2 * Mesa 3-D graphics library
5 * Copyright (C) 2005-2006 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 * \file slang_compile_operation.c
27 * slang front-end compiler
32 #include "slang_compile.h"
33 #include "slang_mem.h"
37 * Init a slang_operation object
40 slang_operation_construct(slang_operation
* oper
)
42 oper
->type
= SLANG_OPER_NONE
;
43 oper
->children
= NULL
;
44 oper
->num_children
= 0;
45 oper
->literal
[0] = 0.0;
46 oper
->literal_size
= 1;
47 oper
->a_id
= SLANG_ATOM_NULL
;
48 oper
->locals
= _slang_variable_scope_new(NULL
);
49 if (oper
->locals
== NULL
)
51 _slang_variable_scope_ctr(oper
->locals
);
58 slang_operation_destruct(slang_operation
* oper
)
62 for (i
= 0; i
< oper
->num_children
; i
++)
63 slang_operation_destruct(oper
->children
+ i
);
64 _slang_free(oper
->children
);
65 slang_variable_scope_destruct(oper
->locals
);
66 _slang_free(oper
->locals
);
67 oper
->children
= NULL
;
68 oper
->num_children
= 0;
74 * Recursively traverse 'oper', replacing occurances of 'oldScope' with
75 * 'newScope' in the oper->locals->outer_scope field.
78 slang_replace_scope(slang_operation
*oper
,
79 slang_variable_scope
*oldScope
,
80 slang_variable_scope
*newScope
)
83 if (oper
->locals
!= newScope
&&
84 oper
->locals
->outer_scope
== oldScope
) {
85 oper
->locals
->outer_scope
= newScope
;
87 for (i
= 0; i
< oper
->num_children
; i
++) {
88 slang_replace_scope(&oper
->children
[i
], oldScope
, newScope
);
94 * Recursively copy a slang_operation node.
95 * \param x copy target
96 * \param y copy source
97 * \return GL_TRUE for success, GL_FALSE if failure
100 slang_operation_copy(slang_operation
* x
, const slang_operation
* y
)
105 if (!slang_operation_construct(&z
))
108 z
.children
= (slang_operation
*)
109 _slang_alloc(y
->num_children
* sizeof(slang_operation
));
110 if (z
.children
== NULL
) {
111 slang_operation_destruct(&z
);
114 for (z
.num_children
= 0; z
.num_children
< y
->num_children
;
116 if (!slang_operation_construct(&z
.children
[z
.num_children
])) {
117 slang_operation_destruct(&z
);
121 for (i
= 0; i
< z
.num_children
; i
++) {
122 if (!slang_operation_copy(&z
.children
[i
], &y
->children
[i
])) {
123 slang_operation_destruct(&z
);
127 z
.literal
[0] = y
->literal
[0];
128 z
.literal
[1] = y
->literal
[1];
129 z
.literal
[2] = y
->literal
[2];
130 z
.literal
[3] = y
->literal
[3];
131 z
.literal_size
= y
->literal_size
;
132 assert(y
->literal_size
>= 1);
133 assert(y
->literal_size
<= 4);
136 if (!slang_variable_scope_copy(z
.locals
, y
->locals
)) {
137 slang_operation_destruct(&z
);
145 slang_operation_destruct(x
);
148 /* If this operation declares a new scope, we need to make sure
149 * all children point to it, not the original operation's scope!
151 if (x
->type
== SLANG_OPER_BLOCK_NEW_SCOPE
) {
152 slang_replace_scope(x
, y
->locals
, x
->locals
);
160 slang_operation_new(GLuint count
)
163 = (slang_operation
*) _slang_alloc(count
* sizeof(slang_operation
));
167 for (i
= 0; i
< count
; i
++)
168 slang_operation_construct(ops
+ i
);
175 * Delete operation and all children
178 slang_operation_delete(slang_operation
*oper
)
180 slang_operation_destruct(oper
);
186 slang_operation_grow(GLuint
*numChildren
, slang_operation
**children
)
188 slang_operation
*ops
;
190 ops
= (slang_operation
*)
191 _slang_realloc(*children
,
192 *numChildren
* sizeof(slang_operation
),
193 (*numChildren
+ 1) * sizeof(slang_operation
));
195 slang_operation
*newOp
= ops
+ *numChildren
;
196 if (!slang_operation_construct(newOp
)) {
209 * Insert a new slang_operation into an array.
210 * \param numElements pointer to current array size (in/out)
211 * \param array address of the array (in/out)
212 * \param pos position to insert new element
213 * \return pointer to the new operation/element
216 slang_operation_insert(GLuint
*numElements
, slang_operation
**array
,
219 slang_operation
*ops
;
221 assert(pos
<= *numElements
);
223 ops
= (slang_operation
*)
224 _slang_alloc((*numElements
+ 1) * sizeof(slang_operation
));
226 slang_operation
*newOp
;
229 _mesa_memcpy(ops
, *array
, pos
* sizeof(slang_operation
));
230 if (pos
< *numElements
)
231 _mesa_memcpy(newOp
+ 1, (*array
) + pos
,
232 (*numElements
- pos
) * sizeof(slang_operation
));
234 if (!slang_operation_construct(newOp
)) {
251 _slang_operation_swap(slang_operation
*oper0
, slang_operation
*oper1
)
253 slang_operation tmp
= *oper0
;