glsl2: Move the compiler to the subdirectory it will live in in Mesa.
[mesa.git] / src / glsl / glsl_parser_extras.h
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 #pragma once
25 #ifndef GLSL_PARSER_EXTRAS_H
26 #define GLSL_PARSER_EXTRAS_H
27
28 #include <cstdlib>
29 #include "glsl_symbol_table.h"
30
31 enum _mesa_glsl_parser_targets {
32 vertex_shader,
33 geometry_shader,
34 fragment_shader,
35 ir_shader
36 };
37
38 struct _mesa_glsl_parse_state {
39 void *scanner;
40 exec_list translation_unit;
41 glsl_symbol_table *symbols;
42
43 unsigned language_version;
44 enum _mesa_glsl_parser_targets target;
45
46 /**
47 * During AST to IR conversion, pointer to current IR function
48 *
49 * Will be \c NULL whenever the AST to IR conversion is not inside a
50 * function definition.
51 */
52 class ir_function_signature *current_function;
53
54 /** Was there an error during compilation? */
55 bool error;
56
57 /** Index of last generated anonymous temporary. */
58 unsigned temp_index;
59
60 /** Loop or switch statement containing the current instructions. */
61 class ir_instruction *loop_or_switch_nesting;
62
63 /** List of structures defined in user code. */
64 const glsl_type **user_structures;
65 unsigned num_user_structures;
66
67 char *info_log;
68
69 /**
70 * \name Enable bits for GLSL extensions
71 */
72 /*@{*/
73 unsigned ARB_draw_buffers_enable:1;
74 unsigned ARB_draw_buffers_warn:1;
75 unsigned ARB_texture_rectangle_enable:1;
76 unsigned ARB_texture_rectangle_warn:1;
77 unsigned EXT_texture_array_enable:1;
78 unsigned EXT_texture_array_warn:1;
79 /*@}*/
80 };
81
82 typedef struct YYLTYPE {
83 int first_line;
84 int first_column;
85 int last_line;
86 int last_column;
87 unsigned source;
88 } YYLTYPE;
89 # define YYLTYPE_IS_DECLARED 1
90 # define YYLTYPE_IS_TRIVIAL 1
91
92 extern void _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state,
93 const char *fmt, ...);
94
95 /**
96 * Emit a warning to the shader log
97 *
98 * \sa _mesa_glsl_error
99 */
100 extern void _mesa_glsl_warning(const YYLTYPE *locp,
101 _mesa_glsl_parse_state *state,
102 const char *fmt, ...);
103
104 extern "C" {
105 extern int preprocess(void *ctx, const char **shader, char **info_log);
106 }
107
108 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state,
109 const char *string);
110
111 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state *state);
112
113 union YYSTYPE;
114 extern int _mesa_glsl_lex(union YYSTYPE *yylval, YYLTYPE *yylloc,
115 void *scanner);
116
117 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state *);
118
119 /**
120 * Process elements of the #extension directive
121 *
122 * \return
123 * If \c name and \c behavior are valid, \c true is returned. Otherwise
124 * \c false is returned.
125 */
126 extern bool _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
127 const char *behavior,
128 YYLTYPE *behavior_locp,
129 _mesa_glsl_parse_state *state);
130
131 /**
132 * Get the textual name of the specified shader target
133 */
134 extern const char *
135 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target);
136
137 void do_ir_to_mesa(exec_list *instructions);
138
139 #endif /* GLSL_PARSER_EXTRAS_H */