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Dir : ~/usr/share/webmin/vendor_perl/Types/Standard/
View File Name : ArrayRef.pm

# INTERNAL MODULE: guts for ArrayRef type from Types::Standard.

package Types::Standard::ArrayRef;

use 5.008001;
use strict;
use warnings;

BEGIN {
	$Types::Standard::ArrayRef::AUTHORITY = 'cpan:TOBYINK';
	$Types::Standard::ArrayRef::VERSION   = '2.000001';
}

$Types::Standard::ArrayRef::VERSION =~ tr/_//d;

use Type::Tiny      ();
use Types::Standard ();
use Types::TypeTiny ();

sub _croak ($;@) { require Error::TypeTiny; goto \&Error::TypeTiny::croak }

no warnings;

sub __constraint_generator {
	return Types::Standard::ArrayRef unless @_;
	
	my $param = shift;
	Types::TypeTiny::is_TypeTiny( $param )
		or _croak(
		"Parameter to ArrayRef[`a] expected to be a type constraint; got $param" );
		
	my ( $min, $max ) = ( 0, -1 );
	$min = Types::Standard::assert_Int( shift ) if @_;
	$max = Types::Standard::assert_Int( shift ) if @_;
	
	my $param_compiled_check = $param->compiled_check;
	my $xsub;
	if ( Type::Tiny::_USE_XS and $min == 0 and $max == -1 ) {
		my $paramname = Type::Tiny::XS::is_known( $param_compiled_check );
		$xsub = Type::Tiny::XS::get_coderef_for( "ArrayRef[$paramname]" )
			if $paramname;
	}
	elsif ( Type::Tiny::_USE_MOUSE
		and $param->_has_xsub
		and $min == 0
		and $max == -1 )
	{
		require Mouse::Util::TypeConstraints;
		my $maker = "Mouse::Util::TypeConstraints"->can( "_parameterize_ArrayRef_for" );
		$xsub = $maker->( $param ) if $maker;
	}
	
	return (
		sub {
			my $array = shift;
			$param->check( $_ ) || return for @$array;
			return !!1;
		},
		$xsub,
	) if $min == 0 and $max == -1;
	
	return sub {
		my $array = shift;
		return if @$array < $min;
		$param->check( $_ ) || return for @$array;
		return !!1;
		}
		if $max == -1;
		
	return sub {
		my $array = shift;
		return if @$array > $max;
		$param->check( $_ ) || return for @$array;
		return !!1;
		}
		if $min == 0;
		
	return sub {
		my $array = shift;
		return if @$array < $min;
		return if @$array > $max;
		$param->check( $_ ) || return for @$array;
		return !!1;
	};
} #/ sub __constraint_generator

sub __inline_generator {
	my $param = shift;
	my ( $min, $max ) = ( 0, -1 );
	$min = shift if @_;
	$max = shift if @_;
	
	my $param_compiled_check = $param->compiled_check;
	my $xsubname;
	if ( Type::Tiny::_USE_XS and $min == 0 and $max == -1 ) {
		my $paramname = Type::Tiny::XS::is_known( $param_compiled_check );
		$xsubname = Type::Tiny::XS::get_subname_for( "ArrayRef[$paramname]" );
	}
	
	return unless $param->can_be_inlined;
	
	return sub {
		my $v = $_[1];
		return "$xsubname\($v\)" if $xsubname && !$Type::Tiny::AvoidCallbacks;
		my $p = Types::Standard::ArrayRef->inline_check( $v );
		
		if ( $min != 0 ) {
			$p .= sprintf( ' and @{%s} >= %d', $v, $min );
		}
		if ( $max > 0 ) {
			$p .= sprintf( ' and @{%s} <= %d', $v, $max );
		}
		
		my $param_check = $param->inline_check( '$i' );
		return $p if $param->{uniq} eq Types::Standard::Any->{uniq};
		
		"$p and do { "
			. "my \$ok = 1; "
			. "for my \$i (\@{$v}) { "
			. "(\$ok = 0, last) unless $param_check " . "}; " . "\$ok " . "}";
	};
} #/ sub __inline_generator

sub __deep_explanation {
	my ( $type, $value, $varname ) = @_;
	my $param = $type->parameters->[0];
	my ( $min, $max ) = ( 0, -1 );
	$min = $type->parameters->[1] if @{ $type->parameters } > 1;
	$max = $type->parameters->[2] if @{ $type->parameters } > 2;
	
	if ( $min != 0 and @$value < $min ) {
		return [
			sprintf( '"%s" constrains array length at least %s', $type,    $min ),
			sprintf( '@{%s} is %d',                              $varname, scalar @$value ),
		];
	}
	
	if ( $max > 0 and @$value > $max ) {
		return [
			sprintf( '"%s" constrains array length at most %d', $type,    $max ),
			sprintf( '@{%s} is %d',                             $varname, scalar @$value ),
		];
	}
	
	for my $i ( 0 .. $#$value ) {
		my $item = $value->[$i];
		next if $param->check( $item );
		return [
			sprintf( '"%s" constrains each value in the array with "%s"', $type, $param ),
			@{ $param->validate_explain( $item, sprintf( '%s->[%d]', $varname, $i ) ) },
		];
	}
	
	# This should never happen...
	return;    # uncoverable statement
} #/ sub __deep_explanation

# XXX: min and max need to be handled by coercion?
sub __coercion_generator {
	my ( $parent, $child, $param ) = @_;
	return unless $param->has_coercion;
	
	my $coercable_item = $param->coercion->_source_type_union;
	my $C              = "Type::Coercion"->new( type_constraint => $child );
	
	if ( $param->coercion->can_be_inlined and $coercable_item->can_be_inlined ) {
		$C->add_type_coercions(
			$parent => Types::Standard::Stringable {
				my @code;
				push @code, 'do { my ($orig, $return_orig, @new) = ($_, 0);';
				push @code, 'for (@$orig) {';
				push @code,
					sprintf(
					'++$return_orig && last unless (%s);',
					$coercable_item->inline_check( '$_' )
					);
				push @code,
					sprintf(
					'push @new, (%s);',
					$param->coercion->inline_coercion( '$_' )
					);
				push @code, '}';
				push @code, '$return_orig ? $orig : \\@new';
				push @code, '}';
				"@code";
			}
		);
	} #/ if ( $param->coercion->...)
	else {
		$C->add_type_coercions(
			$parent => sub {
				my $value = @_ ? $_[0] : $_;
				my @new;
				for my $item ( @$value ) {
					return $value unless $coercable_item->check( $item );
					push @new, $param->coerce( $item );
				}
				return \@new;
			},
		);
	} #/ else [ if ( $param->coercion->...)]
	
	return $C;
} #/ sub __coercion_generator

1;