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#!/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/enums.h"'
print '#include "main/imports.h"'
print '#include "main/mtypes.h"'
print ''
print 'typedef struct PACKED {'
print ' uint16_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 enum value to an element in the \c enum_string_table_offsets 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 into the \c enum_string_table_offsets array.
*/
static int compar_nr( const int *a, enum_elt *b )
{
return a[0] - b->n;
}
static char token_tmp[20];
const char *_mesa_lookup_enum_by_nr( int nr )
{
enum_elt *elt;
STATIC_ASSERT(sizeof(enum_string_table) < (1 << 16));
elt = bsearch(& nr, enum_string_table_offsets,
ARRAY_SIZE(enum_string_table_offsets),
sizeof(enum_string_table_offsets[0]),
(cfunc) compar_nr);
if (elt != NULL) {
return &enum_string_table[elt->offset];
}
else {
/* this is not re-entrant safe, no big deal here */
_mesa_snprintf(token_tmp, sizeof(token_tmp) - 1, "0x%x", nr);
token_tmp[sizeof(token_tmp) - 1] = '\\0';
return token_tmp;
}
}
/**
* Primitive names
*/
static const char *prim_names[PRIM_MAX+3] = {
"GL_POINTS",
"GL_LINES",
"GL_LINE_LOOP",
"GL_LINE_STRIP",
"GL_TRIANGLES",
"GL_TRIANGLE_STRIP",
"GL_TRIANGLE_FAN",
"GL_QUADS",
"GL_QUAD_STRIP",
"GL_POLYGON",
"GL_LINES_ADJACENCY",
"GL_LINE_STRIP_ADJACENCY",
"GL_TRIANGLES_ADJACENCY",
"GL_TRIANGLE_STRIP_ADJACENCY",
"outside begin/end",
"unknown state"
};
/* 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(GLuint nr)
{
if (nr < ARRAY_SIZE(prim_names))
return prim_names[nr];
else
return "invalid mode";
}
"""
return
def printBody(self, api_list):
self.enum_table = {}
for api in api_list:
self.process_enums( api )
enum_table = []
for enum in sorted(self.enum_table.keys()):
low_pri = 9
best_name = ''
for [name, pri] in self.enum_table[ enum ]:
if pri < low_pri:
low_pri = pri
best_name = name
enum_table.append((enum, best_name))
string_offsets = {}
i = 0;
print 'LONGSTRING static const char enum_string_table[] = '
for enum, name in enum_table:
print ' "%s\\0"' % (name)
string_offsets[ enum ] = i
i += len(name) + 1
print ' ;'
print ''
print 'static const enum_elt enum_string_table_offsets[%u] =' % (len(enum_table))
print '{'
for enum, name in enum_table:
print ' { %5u, 0x%08X }, /* %s */' % (string_offsets[enum], enum, name)
print '};'
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 )
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