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.\" ========================================================================
.\"
.IX Title "Class::MethodMaker::OptExt 3pm"
.TH Class::MethodMaker::OptExt 3pm "2018-11-01" "perl v5.28.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Class::MethodMaker::OptExt \- Constants for C::MM's option extension mechanism
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
This class is internal to Class::MethodMaker and should not be used by any
clients.  It is \fBnot\fR part of the public \s-1API.\s0
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This class contains the constants used by Class::MethodMaker to determine the
names of its methods dependent upon options invoked.
.SH "CLASS CONSTANTS"
.IX Header "CLASS CONSTANTS"

.SS "\s-1OPTEXT\s0"
.IX Subsection "OPTEXT"
\&\s-1OPTEXT\s0 is a map from options that are implemented as method extensions to
the option parameters.
.PP
Parameter keys are:
.IP "encode" 4
.IX Item "encode"
code number (to allow the option combination to be encoded whilst keeping the
length of the subr name no more than 8 chars).  encode is required for all
opts (for determining method extension), and must be a power of two.
.IP "refer" 4
.IX Item "refer"
Code for referring to storage (default: '$_[0]\->{$name}').
.IP "decl" 4
.IX Item "decl"
Code for declaring storage.
.IP "postac" 4
.IX Item "postac"
Code to execute immediately after any assignment check \-\-\- for example, to
initialize storage if necessary
.IP "asgnchk" 4
.IX Item "asgnchk"
Code for checking assignments.
.IP "defchk" 4
.IX Item "defchk"
Code for default checking.
.IP "reset" 4
.IX Item "reset"
Code to execute when resetting an element
.IP "read" 4
.IX Item "read"
Code to execute each time an value is read
.IP "store" 4
.IX Item "store"
Code to execute each time a value is stored
.SH "CLASS COMPONENTS"
.IX Header "CLASS COMPONENTS"

.SH "CLASS HIGHER-LEVEL FUNCTIONS"
.IX Header "CLASS HIGHER-LEVEL FUNCTIONS"

.SS "encode"
.IX Subsection "encode"
Take a set of options, return a two-letter code being the extension to add to
the method to incorporate the extensions, and a list (arrayref) of the
extensions represented.
.IP "\s-1SYNOPSIS\s0" 4
.IX Item "SYNOPSIS"
.Vb 2
\&  my ($ext, $opt) =
\&    Class::MethodMaker::OptExt\->encode([qw( static type foobar )]);
.Ve
.IP "\s-1ARGUMENTS\s0" 4
.IX Item "ARGUMENTS"
.RS 4
.PD 0
.IP "options" 4
.IX Item "options"
.PD
The options to encode, as an arrayref of option names
.RE
.RS 4
.RE
.IP "\s-1RETURNS\s0" 4
.IX Item "RETURNS"
.RS 4
.PD 0
.IP "ext" 4
.IX Item "ext"
.PD
A code (string) to append to a methodname to represent the options used.
.IP "opts" 4
.IX Item "opts"
The options represented by the ext .  This is generally a subset of the of
those provided in options, for not all general options are handled by an
encoded methodname.
.RE
.RS 4
.RE
.SH "CLASS HIGHER-LEVEL PROCEDURES"
.IX Header "CLASS HIGHER-LEVEL PROCEDURES"

.SH "INSTANCE CONSTRUCTION"
.IX Header "INSTANCE CONSTRUCTION"

.SH "INSTANCE COMPONENTS"
.IX Header "INSTANCE COMPONENTS"

.SH "INSTANCE HIGHER-LEVEL FUNCTIONS"
.IX Header "INSTANCE HIGHER-LEVEL FUNCTIONS"

.SH "INSTANCE HIGHER-LEVEL PROCEDURES"
.IX Header "INSTANCE HIGHER-LEVEL PROCEDURES"

.SH "EXAMPLES"
.IX Header "EXAMPLES"

.SH "BUGS"
.IX Header "BUGS"

.SH "REPORTING BUGS"
.IX Header "REPORTING BUGS"
Email the development mailing list \f(CW\*(C`class\-mmaker\-devel@lists.sourceforge.net\*(C'\fR.
.SH "AUTHOR"
.IX Header "AUTHOR"
Martyn J. Pearce
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (c) 2003 Martyn J. Pearce.  This program is free software; you can
redistribute it and/or modify it under the same terms as Perl itself.
.SH "SEE ALSO"
.IX Header "SEE ALSO"