Provided by: libclass-makemethods-perl_1.01-7_all 
NAME
Class::MakeMethods::Emulator::MethodMaker - Emulate Class::MethodMaker
SYNOPSIS
package MyObject;
use Class::MakeMethods::Emulator::MethodMaker(
new_with_init => 'new',
get_set => [ qw / foo bar baz / ];
);
... OR ...
package MyObject;
use Class::MakeMethods::Emulator::MethodMaker '-take_namespace';
use Class::MethodMaker (
new_with_init => 'new',
get_set => [ qw / foo bar baz / ];
);
DESCRIPTION
This module provides emulation of Class::MethodMaker, using the Class::MakeMethods
framework.
Although originally based on Class::MethodMaker, the calling convention for
Class::MakeMethods differs in a variety of ways; most notably, the names given to various
types of methods have been changed, and the format for specifying method attributes has
been standardized. This package uses the aliasing capability provided by
Class::MakeMethods, defining methods that modify the declaration arguments as necessary
and pass them off to various subclasses of Class::MakeMethods.
COMPATIBILITY
Full compatibility is maintained with version 1.03; some of the changes in versions 1.04
through 1.10 are not yet included.
The test suite from Class::MethodMaker version 1.10 is included with this package, in the
t/emulator_class_methodmaker/ directory. The unsupported tests have names ending in
".todo".
The tests are unchanged from those in the Class::MethodMaker distribution, except for the
substitution of "Class::MakeMethods::Emulator::MethodMaker" in the place of
"Class::MethodMaker".
In cases where earlier distributions of Class::MethodMaker contained a different version
of a test, it is also included. (Note that version 0.92's get_concat returned '' for empty
values, but in version 0.96 this was changed to undef; this emulator follows the later
behavior. To avoid "use of undefined value" warnings from the 0.92 version of
get_concat.t, that test has been modified by appending a new flag after the name,
'get_concat --noundef', which restores the earlier behavior.)
USAGE
There are several ways to call this emulation module:
• Direct Access
Replace occurrences in your code of "Class::MethodMaker" with
"Class::MakeMethods::Emulator::MethodMaker".
• Install Emulation
If you "use Class::MakeMethods::Emulator::MethodMaker '-take_namespace'", the
Class::MethodMaker namespace will be aliased to this package, and calls to the
original package will be transparently handled by this emulator.
To remove the emulation aliasing, call "use Class::MakeMethods::Emulator::MethodMaker
'-release_namespace'".
Note: This affects all subsequent uses of Class::MethodMaker in your program,
including those in other modules, and might cause unexpected effects.
• The -sugar Option
Passing '-sugar' as the first argument in a use or import call will cause the
'methods' package to be declared as an alias to this one.
This allows you to write declarations in the following manner.
use Class::MakeMethods::Emulator::MethodMaker '-sugar';
make methods
get_set => [ qw / foo bar baz / ],
list => [ qw / a b c / ];
Note: This feature is deprecated in Class::MethodMaker version 0.96 and later.
METHOD CATALOG
NOTE: The documentation below is derived from version 1.02 of Class::MethodMaker.
Class::MakeMethods::Emulator::MethodMaker provides support for all of the features and
examples shown below, with no changes required.
CONSTRUCTOR METHODS
new
Equivalent to Class::MakeMethods 'Template::Hash:new --with_values'.
new_with_init
Equivalent to Class::MakeMethods 'Template::Hash:new --with_init'.
new_hash_init
Equivalent to Class::MakeMethods 'Template::Hash:new --instance_with_methods'.
new_with_args
Equivalent to Class::MakeMethods 'Template::Hash:new --with_values'.
copy
Equivalent to Class::MakeMethods 'Template::Hash:new --copy_with_values'.
SCALAR ACCESSORS
get_set
Basically equivalent to Class::MakeMethods 'Template::Hash:scalar', except that various
arguments are intercepted and converted into the parallel Class::MakeMethods::Template
interface declarations.
get_concat
Equivalent to Class::MakeMethods 'Template::Hash:string' with a special interface
declaration that provides the get_concat and clear behaviors.
counter
Equivalent to Class::MakeMethods 'Template::Hash:number --counter'.
OBJECT ACCESSORS
Basically equivalent to Class::MakeMethods 'Template::Hash:object' with an declaration
that provides the "delete_x" interface. Due to a difference in expected argument syntax,
the incoming arguments are revised before being delegated to Template::Hash:object.
object_list
Basically equivalent to Class::MakeMethods 'Template::Hash:object_list' with an
declaration that provides the relevant helper methods. Due to a difference in expected
argument syntax, the incoming arguments are revised before being delegated to
Template::Hash:object_list.
forward
Basically equivalent to Class::MakeMethods 'Template::Universal:forward_methods'. Due to a
difference in expected argument syntax, the incoming arguments are revised before being
delegated to Template::Universal:forward_methods.
forward => [ comp => 'method1', comp2 => 'method2' ]
Define pass-through methods for certain fields. The above defines that method "method1"
will be handled by component "comp", whilst method "method2" will be handled by component
"comp2".
REFERENCE ACCESSORS
list
Equivalent to Class::MakeMethods 'Template::Hash:array' with a custom method naming
interface.
hash
Equivalent to Class::MakeMethods 'Template::Hash:hash' with a custom method naming
interface.
tie_hash
Equivalent to Class::MakeMethods 'Template::Hash:tiedhash' with a custom method naming
interface.
hash_of_lists
Equivalent to Class::MakeMethods 'Template::Hash:hash_of_arrays', or if the -static flag
is present, to 'Template::Static:hash_of_arrays'.
STATIC ACCESSORS
static_get_set
Equivalent to Class::MakeMethods 'Template::Static:scalar' with a custom method naming
interface.
static_list
Equivalent to Class::MakeMethods 'Template::Static:array' with a custom method naming
interface.
static_hash
Equivalent to Class::MakeMethods 'Template::Static:hash' with a custom method naming
interface.
GROUPED ACCESSORS
boolean
Equivalent to Class::MakeMethods 'Template::Static:bits' with a custom method naming
interface.
grouped_fields
Creates get/set methods like get_set but also defines a method which returns a list of the
slots in the group.
use Class::MakeMethods::Emulator::MethodMaker
grouped_fields => [
some_group => [ qw / field1 field2 field3 / ],
];
Its argument list is parsed as a hash of group-name => field-list pairs. Get-set methods
are defined for all the fields and a method with the name of the group is defined which
returns the list of fields in the group.
struct
Equivalent to Class::MakeMethods 'Template::Hash::struct'.
Note: This feature is included but not documented in Class::MethodMaker version 1.
INDEXED ACCESSORS
listed_attrib
Equivalent to Class::MakeMethods 'Template::Flyweight:boolean_index' with a custom method
naming interface.
key_attrib
Equivalent to Class::MakeMethods 'Template::Hash:string_index'.
key_with_create
Equivalent to Class::MakeMethods 'Template::Hash:string_index --find_or_new'.
CODE ACCESSORS
code
Equivalent to Class::MakeMethods 'Template::Hash:code'.
method
Equivalent to Class::MakeMethods 'Template::Hash:code --method'.
abstract
Equivalent to Class::MakeMethods 'Template::Universal:croak --abstract'.
ARRAY CONSTRUCTOR AND ACCESSORS
builtin_class (EXPERIMENTAL)
Equivalent to Class::MakeMethods 'Template::StructBuiltin:builtin_isa' with a modified
argument order.
CONVERSION
If you wish to convert your code from use of the Class::MethodMaker emulator to direct use
of Class::MakeMethods, you will need to adjust the arguments specified in your "use" or
"make" calls.
Often this is simply a matter of replacing the names of aliased method-types listed below
with the new equivalents.
For example, suppose that you code contained the following declaration:
use Class::MethodMaker (
counter => [ 'foo' ]
);
Consulting the listings below you can find that "counter" is an alias for "Hash:number
--counter" and you could thus revise your declaration to read:
use Class::MakeMethods (
'Hash:number --counter' => [ 'foo' ]
);
However, note that those methods marked "(with custom interface)" below have a different
default naming convention for helper methods in Class::MakeMethods, and you will need to
either supply a similar interface or alter your module's calling interface.
Also note that the "forward", "object", and "object_list" method types, marked "(with
modified arguments)" below, require their arguments to be specified differently.
See Class::MakeMethods::Template::Generic for more information about the default
interfaces of these method types.
Hash methods
The following equivalencies are declared for old meta-method names that are now handled by
the Hash implementation:
new 'Template::Hash:new --with_values'
new_with_init 'Template::Hash:new --with_init'
new_hash_init 'Template::Hash:new --instance_with_methods'
copy 'Template::Hash:copy'
get_set 'Template::Hash:scalar' (with custom interfaces)
counter 'Template::Hash:number --counter'
get_concat 'Template::Hash:string --get_concat' (with custom interface)
boolean 'Template::Hash:bits' (with custom interface)
list 'Template::Hash:array' (with custom interface)
struct 'Template::Hash:struct'
hash 'Template::Hash:hash' (with custom interface)
tie_hash 'Template::Hash:tiedhash' (with custom interface)
hash_of_lists 'Template::Hash:hash_of_arrays'
code 'Template::Hash:code'
method 'Template::Hash:code --method'
object 'Template::Hash:object' (with custom interface and modified arguments)
object_list 'Template::Hash:array_of_objects' (with custom interface and modified arguments)
key_attrib 'Template::Hash:string_index'
key_with_create 'Template::Hash:string_index --find_or_new'
Static methods
The following equivalencies are declared for old meta-method names that are now handled by
the Static implementation:
static_get_set 'Template::Static:scalar' (with custom interface)
static_hash 'Template::Static:hash' (with custom interface)
Flyweight method
The following equivalency is declared for the one old meta-method name that us now handled
by the Flyweight implementation:
listed_attrib 'Template::Flyweight:boolean_index'
Struct methods
The following equivalencies are declared for old meta-method names that are now handled by
the Struct implementation:
builtin_class 'Template::Struct:builtin_isa'
Universal methods
The following equivalencies are declared for old meta-method names that are now handled by
the Universal implementation:
abstract 'Template::Universal:croak --abstract'
forward 'Template::Universal:forward_methods' (with modified arguments)
EXTENDING
In order to enable third-party subclasses of MethodMaker to run under this emulator,
several aliases or stub replacements are provided for internal Class::MethodMaker methods
which have been eliminated or renamed.
• install_methods - now simply return the desired methods
• find_target_class - now passed in as the target_class attribute
• ima_method_maker - no longer supported; use target_class instead
BUGS
This module aims to provide a 100% compatible drop-in replacement for Class::MethodMaker;
if you detect a difference when using this emulation, please inform the author.
SEE ALSO
See Class::MakeMethods for general information about this distribution.
See Class::MakeMethods::Emulator for more about this family of subclasses.
See Class::MethodMaker for more information about the original module.
A good introduction to Class::MethodMaker is provided by pages 222-234 of Object Oriented
Perl, by Damian Conway (Manning, 1999).
http://www.browsebooks.com/Conway/