summaryrefslogtreecommitdiff
path: root/src/mapi/glapi/gen/gl_enums.py
blob: 644e085522962fff04158f745caaa476603ec8a5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
#!/usr/bin/python2
# -*- Mode: Python; py-indent-offset: 8 -*-

# (C) Copyright Zack Rusin 2005
# 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
# on the rights to use, copy, modify, merge, publish, distribute, sub
# license, 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 (including the next
# paragraph) 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 NON-INFRINGEMENT.  IN NO EVENT SHALL
# IBM AND/OR ITS SUPPLIERS 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.
#
# Authors:
#    Zack Rusin <zack@kde.org>

import license
import gl_XML
import sys, getopt

class PrintGlEnums(gl_XML.gl_print_base):

	def __init__(self):
		gl_XML.gl_print_base.__init__(self)

		self.name = "gl_enums.py (from Mesa)"
		self.license = license.bsd_license_template % ( \
"""Copyright (C) 1999-2005 Brian Paul All Rights Reserved.""", "BRIAN PAUL")
		self.enum_table = {}


	def printRealHeader(self):
		print '#include "main/glheader.h"'
		print '#include "main/mfeatures.h"'
		print '#include "main/enums.h"'
		print '#include "main/imports.h"'
		print ''
		print 'typedef struct {'
		print '   size_t offset;'
		print '   int n;'
		print '} enum_elt;'
		print ''
		return

	def print_code(self):
		print """
typedef int (*cfunc)(const void *, const void *);

/**
 * Compare a key name to an element in the \c all_enums array.
 *
 * \c bsearch always passes the key as the first parameter and the pointer
 * to the array element as the second parameter.  We can elimiate some
 * extra work by taking advantage of that fact.
 *
 * \param a  Pointer to the desired enum name.
 * \param b  Pointer to an element of the \c all_enums array.
 */
static int compar_name( const char *a, const enum_elt *b )
{
   return strcmp( a, & enum_string_table[ b->offset ] );
}

/**
 * Compare a key enum value to an element in the \c all_enums array.
 *
 * \c bsearch always passes the key as the first parameter and the pointer
 * to the array element as the second parameter.  We can elimiate some
 * extra work by taking advantage of that fact.
 *
 * \param a  Pointer to the desired enum name.
 * \param b  Pointer to an index into the \c all_enums array.
 */
static int compar_nr( const int *a, const unsigned *b )
{
   return a[0] - all_enums[*b].n;
}


static char token_tmp[20];

const char *_mesa_lookup_enum_by_nr( int nr )
{
   unsigned * i;

   i = (unsigned *) _mesa_bsearch(& nr, reduced_enums,
                                  Elements(reduced_enums),
                                  sizeof(reduced_enums[0]),
                                  (cfunc) compar_nr);

   if ( i != NULL ) {
      return & enum_string_table[ all_enums[ *i ].offset ];
   }
   else {
      /* this is not re-entrant safe, no big deal here */
      sprintf(token_tmp, "0x%x", nr);
      return token_tmp;
   }
}

/* Get the name of an enum given that it is a primitive type.  Avoids
 * GL_FALSE/GL_POINTS ambiguity and others.
 */
const char *_mesa_lookup_prim_by_nr( int nr )
{
   switch (nr) {
   case GL_POINTS: return "GL_POINTS";
   case GL_LINES: return "GL_LINES";
   case GL_LINE_STRIP: return "GL_LINE_STRIP";
   case GL_LINE_LOOP: return "GL_LINE_LOOP";
   case GL_TRIANGLES: return "GL_TRIANGLES";
   case GL_TRIANGLE_STRIP: return "GL_TRIANGLE_STRIP";
   case GL_TRIANGLE_FAN: return "GL_TRIANGLE_FAN";
   case GL_QUADS: return "GL_QUADS";
   case GL_QUAD_STRIP: return "GL_QUAD_STRIP";
   case GL_POLYGON: return "GL_POLYGON";
   case GL_POLYGON+1: return "OUTSIDE_BEGIN_END";
   default: return "<invalid>";
   }
}



int _mesa_lookup_enum_by_name( const char *symbol )
{
   enum_elt * f = NULL;

   if ( symbol != NULL ) {
      f = (enum_elt *) _mesa_bsearch(symbol, all_enums,
                                     Elements(all_enums),
                                     sizeof( enum_elt ),
                                     (cfunc) compar_name);
   }

   return (f != NULL) ? f->n : -1;
}

"""
		return


	def printBody(self, api_list):
		self.enum_table = {}
		for api in api_list:
			self.process_enums( api )

		keys = self.enum_table.keys()
		keys.sort()

		name_table = []
		enum_table = {}

		for enum in keys:
			low_pri = 9
			for [name, pri] in self.enum_table[ enum ]:
				name_table.append( [name, enum] )

				if pri < low_pri:
					low_pri = pri
					enum_table[enum] = name
						

		name_table.sort()

		string_offsets = {}
		i = 0;
		print 'LONGSTRING static const char enum_string_table[] = '
		for [name, enum] in name_table:
			print '   "%s\\0"' % (name)
			string_offsets[ name ] = i
			i += len(name) + 1

		print '   ;'
		print ''


		print 'static const enum_elt all_enums[%u] =' % (len(name_table))
		print '{'
		for [name, enum] in name_table:
			print '   { %5u, 0x%08X }, /* %s */' % (string_offsets[name], enum, name)
		print '};'
		print ''

		print 'static const unsigned reduced_enums[%u] =' % (len(keys))
		print '{'
		for enum in keys:
			name = enum_table[ enum ]
			if [name, enum] not in name_table:
				print '      /* Error! %s, 0x%04x */ 0,' % (name, enum)
			else:
				i = name_table.index( [name, enum] )

				print '      %4u, /* %s */' % (i, name)
		print '};'


		self.print_code()
		return


	def process_enums(self, api):
		for obj in api.enumIterateByName():
			if obj.value not in self.enum_table:
				self.enum_table[ obj.value ] = []


			enum = self.enum_table[ obj.value ]
			name = "GL_" + obj.name
			priority = obj.priority()
			already_in = False;
			for n, p in enum:
				if n == name:
					already_in = True
			if not already_in:
				enum.append( [name, priority] )


def show_usage():
	print "Usage: %s [-f input_file_name]" % sys.argv[0]
	sys.exit(1)

if __name__ == '__main__':
	try:
		(args, trail) = getopt.getopt(sys.argv[1:], "f:")
	except Exception,e:
		show_usage()

	api_list = []
	for (arg,val) in args:
		if arg == "-f":
			api = gl_XML.parse_GL_API( val )
			api_list.append(api);

	printer = PrintGlEnums()
	printer.Print( api_list )