#!/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 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 */ _mesa_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 ""; } } 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): 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): self.enum_table = {} for obj in api.enumIterateByName(): if obj.value not in self.enum_table: self.enum_table[ obj.value ] = [] name = "GL_" + obj.name priority = obj.priority() self.enum_table[ obj.value ].append( [name, priority] ) def show_usage(): print "Usage: %s [-f input_file_name]" % sys.argv[0] sys.exit(1) if __name__ == '__main__': file_name = "gl_API.xml" try: (args, trail) = getopt.getopt(sys.argv[1:], "f:") except Exception,e: show_usage() for (arg,val) in args: if arg == "-f": file_name = val api = gl_XML.parse_GL_API( file_name ) printer = PrintGlEnums() printer.Print( api )