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1 /*
2  * Copyright © 2010 Intel Corporation
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21  * DEALINGS IN THE SOFTWARE.
22  */
23 
24 #include "ast.h"
25 extern "C" {
26 #include "program/symbol_table.h"
27 }
28 
29 void
print(void) const30 ast_type_specifier::print(void) const
31 {
32    if (structure) {
33       structure->print();
34    } else {
35       printf("%s ", type_name);
36    }
37 
38    if (is_array) {
39       printf("[ ");
40 
41       if (array_size) {
42 	 array_size->print();
43       }
44 
45       printf("] ");
46    }
47 }
48 
49 bool
has_qualifiers() const50 ast_fully_specified_type::has_qualifiers() const
51 {
52    return this->qualifier.flags.i != 0;
53 }
54 
has_interpolation() const55 bool ast_type_qualifier::has_interpolation() const
56 {
57    return this->flags.q.smooth
58           || this->flags.q.flat
59           || this->flags.q.noperspective;
60 }
61 
62 const char*
interpolation_string() const63 ast_type_qualifier::interpolation_string() const
64 {
65    if (this->flags.q.smooth)
66       return "smooth";
67    else if (this->flags.q.flat)
68       return "flat";
69    else if (this->flags.q.noperspective)
70       return "noperspective";
71    else
72       return NULL;
73 }
74 
75 bool
merge_qualifier(YYLTYPE * loc,_mesa_glsl_parse_state * state,ast_type_qualifier q)76 ast_type_qualifier::merge_qualifier(YYLTYPE *loc,
77 				    _mesa_glsl_parse_state *state,
78 				    ast_type_qualifier q)
79 {
80    ast_type_qualifier ubo_mat_mask;
81    ubo_mat_mask.flags.i = 0;
82    ubo_mat_mask.flags.q.row_major = 1;
83    ubo_mat_mask.flags.q.column_major = 1;
84 
85    ast_type_qualifier ubo_layout_mask;
86    ubo_layout_mask.flags.i = 0;
87    ubo_layout_mask.flags.q.std140 = 1;
88    ubo_layout_mask.flags.q.packed = 1;
89    ubo_layout_mask.flags.q.shared = 1;
90 
91    /* Uniform block layout qualifiers get to overwrite each
92     * other (rightmost having priority), while all other
93     * qualifiers currently don't allow duplicates.
94     */
95 
96    if ((this->flags.i & q.flags.i & ~(ubo_mat_mask.flags.i |
97 				      ubo_layout_mask.flags.i)) != 0) {
98       _mesa_glsl_error(loc, state,
99 		       "duplicate layout qualifiers used\n");
100       return false;
101    }
102 
103    if ((q.flags.i & ubo_mat_mask.flags.i) != 0)
104       this->flags.i &= ~ubo_mat_mask.flags.i;
105    if ((q.flags.i & ubo_layout_mask.flags.i) != 0)
106       this->flags.i &= ~ubo_layout_mask.flags.i;
107 
108    this->flags.i |= q.flags.i;
109 
110    if (q.flags.q.explicit_location)
111       this->location = q.location;
112 
113    if (q.flags.q.explicit_index)
114       this->index = q.index;
115 
116    return true;
117 }
118 
119