diff options
Diffstat (limited to 'src/mesa/glapi/gl_enums.py')
| -rw-r--r-- | src/mesa/glapi/gl_enums.py | 164 |
1 files changed, 124 insertions, 40 deletions
diff --git a/src/mesa/glapi/gl_enums.py b/src/mesa/glapi/gl_enums.py index 776f814b5b..2237b7d148 100644 --- a/src/mesa/glapi/gl_enums.py +++ b/src/mesa/glapi/gl_enums.py @@ -41,6 +41,7 @@ class PrintGlEnums(gl_XML.FilterGLAPISpecBase): gl_XML.FilterGLAPISpecBase.__init__(self) self.license = license.bsd_license_template % ( \ """Copyright (C) 1999-2005 Brian Paul All Rights Reserved.""", "BRIAN PAUL") + self.enum_table = {} def printRealHeader(self): @@ -49,32 +50,46 @@ class PrintGlEnums(gl_XML.FilterGLAPISpecBase): print '#include "imports.h"' print '' print 'typedef struct {' - print ' const char *c;' + print ' size_t offset;' print ' int n;' print '} enum_elt;' print '' - print 'static const enum_elt all_enums[] =' - print '{' return def printBody(self): print """ -}; - #define Elements(x) sizeof(x)/sizeof(*x) typedef int (*cfunc)(const void *, const void *); -/* note the extra level of indirection +/** + * 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 enum_elt **a, const enum_elt **b ) +static int compar_name( const char *a, const enum_elt *b ) { - return _mesa_strcmp((*a)->c, (*b)->c); + return _mesa_strcmp( a, & enum_string_table[ b->offset ] ); } -static int compar_nr( const enum_elt *a, const enum_elt *b ) +/** + * 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->n - b->n; + return a[0] - all_enums[*b].n; } @@ -82,18 +97,16 @@ static char token_tmp[20]; const char *_mesa_lookup_enum_by_nr( int nr ) { - enum_elt tmp, *e; + unsigned * i; - tmp.n = nr; + i = (unsigned *)bsearch( & nr, reduced_enums, Elements(reduced_enums), + sizeof(reduced_enums[0]), (cfunc) compar_nr ); - e = (enum_elt *)bsearch( &tmp, all_enums, Elements(all_enums), - sizeof(*all_enums), (cfunc) compar_nr ); - - if (e) { - return e->c; + if ( i != NULL ) { + return & enum_string_table[ all_enums[ *i ].offset ]; } else { - /* this isn't re-entrant safe, no big deal here */ + /* this is not re-entrant safe, no big deal here */ _mesa_sprintf(token_tmp, "0x%x", nr); return token_tmp; } @@ -101,46 +114,117 @@ const char *_mesa_lookup_enum_by_nr( int nr ) int _mesa_lookup_enum_by_name( const char *symbol ) { - enum_elt tmp, *e, **f; - static const enum_elt * const index1[] = {""" - - def printRealFooter(self): - print """ }; + enum_elt * f = NULL; - if (!symbol) - return 0; - - tmp.c = symbol; - e = &tmp; - - f = (enum_elt **)bsearch( &e, index1, Elements(all_enums), - sizeof(*index1), (cfunc) compar_name ); + if ( symbol != NULL ) { + f = (enum_elt *)bsearch( symbol, all_enums, Elements(all_enums), + sizeof( enum_elt ), (cfunc) compar_name ); + } - return f ? (*f)->n : -1; + return (f != NULL) ? f->n : -1; } """ return def printFunctions(self): - self.enums.sort(lambda x,y: x.value - y.value) - for enum in self.enums: - print ' { "%s", 0x%X },' % (enum.name, enum.value) - nameEnums = self.enums[:] + 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 '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.printBody(); - self.enums.sort(lambda x,y: cmp(x.name, y.name)) - for enum in self.enums: - print ' &all_enums[%d], ' % (nameEnums.index(enum)) return + def append(self, object_type, obj): + if object_type == "enum": + if obj.value not in self.enum_table: + self.enum_table[ obj.value ] = [] + + + # Prevent duplicate names in the enum table. + + if obj.name not in self.enum_table[ obj.value ]: + + # Calculate a "priority" for this enum name. + # When we lookup an enum by number, there may + # be many possible names, but only one can be + # returned. The priority is used by this + # script to select which name is the "best". + # + # Highest precedence is given to "core" name. + # ARB extension names have the next highest, + # followed by EXT extension names. Vendor + # extension names are the lowest. + + if obj.category.startswith( "GL_VERSION_" ): + priority = 0 + elif obj.category.startswith( "GL_ARB_" ): + priority = 1 + elif obj.category.startswith( "GL_EXT_" ): + priority = 2 + else: + priority = 3 + + self.enum_table[ obj.value ].append( [obj.name, priority] ) + + else: + gl_XML.FilterGLAPISpecBase.append(self, object_type, obj) + + 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: |