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=head1 NAME
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Repl::Spec::Type::IntegerRangeType - A parameter guard for integer ranges.
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=head1 SYNOPSIS
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This type guard ensures that an integer, range bound parameter was passed by the user.
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9
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=head1 DESCRIPTION
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=head1 Methods
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=over 4
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=item C
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Parameters: from and to to indicate the range.
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=item C
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Parameters: A single expression.
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Returns: The integer value.
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=item C
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=head1 SEE ALSO
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=cut
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39
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package Repl::Spec::Type::IntegerRangeType;
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1
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use strict;
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1
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use warnings;
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1
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1
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use Carp;
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2
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1
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use Repl::Spec::Type::IntegerType;
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1
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1
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244
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47
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our @ISA = qw(Repl::Spec::Type::IntegerType);
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# Expects two integer arguments, the range of the integer.
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# - from
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# - to
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sub new
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{
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5
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1
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my $invocant = shift;
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5
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my $class = ref($invocant) || $invocant;
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my $from = shift;
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my $to = shift;
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60
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# Invoke super constructor.
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5
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my $self= Repl::Spec::Type::IntegerType::new($class);
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$self->{FROM} = $from;
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$self->{TO} = $to;
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# We don't have to bless.
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5
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return $self;
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}
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68
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sub guard
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{
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0
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0
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1
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my $self = shift;
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0
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my $arg = shift;
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0
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my $from = $self->{FROM};
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0
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my $to = $self->{TO};
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75
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0
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eval {$arg = $self->SUPER::guard($arg)};
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0
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76
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0
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0
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carp $@ if $@;
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0
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0
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0
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if($arg < $from || $arg > $to)
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{
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0
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croak sprintf("Integer out of range. Expected %s but received '%s'.", $self->name(), $arg);
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80
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}
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81
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else
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{
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0
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return $arg;
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84
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}
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0
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croak sprintf("Expected type integer but received '%s'.", $arg);
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86
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}
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87
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88
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sub name
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89
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{
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90
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0
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0
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1
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my $self = shift;
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91
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92
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0
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my $from = $self->{FROM};
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93
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0
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my $to = $self->{TO};
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94
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95
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0
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return sprintf("integer range %d..%d", $from, $to);
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}
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97
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98
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1;
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