[patch] Dynamic access of static members/methods, and constants

> Hi, > > I've already proposed that 1-2 months ago, but now seems to be a good > time to discuss new things, so let's try again: > > I believe it would be nice to be able to dynamically reference static > members, constants, and methods. > > Currently, there is no way to do that and the only way would be to > create a static method and use call_user_func(array($classname, 'getThat')); > > In other words:

> > Hi, > > I've already proposed that 1-2 months ago, but now seems to be a good > time to discuss new things, so let's try again: > > I believe it would be nice to be able to dynamically reference static > members, constants, and methods. > > Currently, there is no way to do that and the only way would be to > create a static method and use call_user_func(array($classname, > 'getThat')); > > In other words: > > class A { > public static $foo = 'value1'; > const gee = 'value2'; > public static function bar() { return 'value3'; } > > // old way: > public static function getFoo() { return self::$foo; } > public static function getGee() { return self::gee; } > > } > > $classname = 'A'; > echo $classname::$foo; // value1 > echo $classname::gee; // value2 > echo $classname::bar(); // value3 > > // --- instead of: --- > > $classname = 'A'; > echo call_user_func(array($classname, 'getFoo')); // value1 > echo call_user_func(array($classname, 'getGee')); // value2 > echo call_user_func(array($classname, 'bar')); // value3 > > which is quite slow. > > Please take a look at the patch[1] I made for it. Comments would be > appreciated! > > Regards, > > > 1: http://patches.colder.ch/Zend/dynamic-static-calls.patch?markup > > -- > Etienne Kneuss > http://www.colder.ch > colder@php.net > > Men never do evil so completely and cheerfully as > when they do it from a religious conviction. > -- Pascal > > Index: Zend/zend_language_parser.y > =================================================================== > RCS file: /repository/ZendEngine2/zend_language_parser.y,v > retrieving revision 1.179 > diff -u -r1.179 zend_language_parser.y > --- Zend/zend_language_parser.y 4 Mar 2007 16:25:57 -0000 1.179 > +++ Zend/zend_language_parser.y 6 Mar 2007 14:43:49 -0000 > @@ -642,6 +642,12 @@ > | fully_qualified_class_name T_PAAMAYIM_NEKUDOTAYIM > variable_without_objects '(' { zend_do_end_variable_parse(BP_VAR_R, 0 > TSRMLS_CC); zend_do_begin_class_member_function_call(&$1, &$3 TSRMLS_CC); } > function_call_parameter_list > ')' { zend_do_end_function_call(NULL, &$$, &$6, 1, > 1 TSRMLS_CC); zend_do_extended_fcall_end(TSRMLS_C);} > + | variable_class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING '(' { > zend_do_begin_class_member_function_call(&$1, &$3 TSRMLS_CC); } > + function_call_parameter_list > + ')' { zend_do_end_function_call(NULL, &$$, &$6, 1, > 1 TSRMLS_CC); zend_do_extended_fcall_end(TSRMLS_C);} > + | variable_class_name T_PAAMAYIM_NEKUDOTAYIM > variable_without_objects '(' { zend_do_end_variable_parse(BP_VAR_R, 0 > TSRMLS_CC); zend_do_begin_class_member_function_call(&$1, &$3 TSRMLS_CC); } > + function_call_parameter_list > + ')' { zend_do_end_function_call(NULL, &$$, &$6, 1, > 1 TSRMLS_CC); zend_do_extended_fcall_end(TSRMLS_C);} > | variable_without_objects '(' { > zend_do_end_variable_parse(BP_VAR_R, 0 TSRMLS_CC); > zend_do_begin_dynamic_function_call(&$1 TSRMLS_CC); } > function_call_parameter_list ')' > { zend_do_end_function_call(&$1, &$$, &$4, 0, 1 > TSRMLS_CC); zend_do_extended_fcall_end(TSRMLS_C);} > @@ -795,6 +801,11 @@ > > static_member: > fully_qualified_class_name T_PAAMAYIM_NEKUDOTAYIM > variable_without_objects { $$ = $3; zend_do_fetch_static_member(&$$, &$1 > TSRMLS_CC); } > + | variable_class_name T_PAAMAYIM_NEKUDOTAYIM > variable_without_objects { $$ = $3; zend_do_fetch_static_member(&$$, &$1 > TSRMLS_CC); } > +; > + > +variable_class_name: > + reference_variable { zend_do_end_variable_parse(BP_VAR_R, 0 > TSRMLS_CC); zend_do_fetch_class(&$$, &$1 TSRMLS_CC); } > ; > > > @@ -930,6 +941,7 @@ > > class_constant: > fully_qualified_class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING > { zend_do_fetch_constant(&$$, &$1, &$3, ZEND_RT TSRMLS_CC); } > + | variable_class_name T_PAAMAYIM_NEKUDOTAYIM T_STRING { > zend_do_fetch_constant(&$$, &$1, &$3, ZEND_RT TSRMLS_CC); } > ; > > %% > Index: tests/lang/041.phpt > =================================================================== > RCS file: tests/lang/041.phpt > diff -N tests/lang/041.phpt > --- /dev/null 1 Jan 1970 00:00:00 -0000 > +++ tests/lang/041.phpt 6 Mar 2007 14:43:49 -0000 > @@ -0,0 +1,14 @@ > +--TEST-- > +Dynamic access of static members > +--FILE-- > +<?php > +class A { > + public static $b = 'foo'; > +} > +$classname = 'A'; > +echo $classname::$b; > +?> > +===DONE=== > +--EXPECT-- > +foo > +===DONE=== > Index: tests/lang/042.phpt > =================================================================== > RCS file: tests/lang/042.phpt > diff -N tests/lang/042.phpt > --- /dev/null 1 Jan 1970 00:00:00 -0000 > +++ tests/lang/042.phpt 6 Mar 2007 14:43:49 -0000 > @@ -0,0 +1,14 @@ > +--TEST-- > +Dynamic access of constants > +--FILE-- > +<?php > +class A { > + const B = 'foo'; > +} > +$classname = 'A'; > +echo $classname::B; > +?> > +===DONE=== > +--EXPECT-- > +foo > +===DONE=== > Index: tests/lang/043.phpt > =================================================================== > RCS file: tests/lang/043.phpt > diff -N tests/lang/043.phpt > --- /dev/null 1 Jan 1970 00:00:00 -0000 > +++ tests/lang/043.phpt 6 Mar 2007 14:43:49 -0000 > @@ -0,0 +1,14 @@ > +--TEST-- > +Dynamic call for static methods > +--FILE-- > +<?php > +class A { > + static function foo() { return 'bar'; } > +} > +$classname = 'A'; > +echo $classname::foo(); > +?> > +===DONE=== > +--EXPECT-- > +bar > +===DONE=== > > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php >

> I've already proposed that 1-2 months ago, but now seems to be a good > time to discuss new things, so let's try again: > > I believe it would be nice to be able to dynamically reference static > members, constants, and methods. > > Currently, there is no way to do that and the only way would be to > create a static method and use call_user_func(array($classname, > 'getThat'));