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package Locale::Babelfish::Phrase::Parser; |
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# ABSTRACT: Babelfish syntax parser. |
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107222
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use utf8; |
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use strict; |
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use warnings; |
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use Locale::Babelfish::Phrase::Literal (); |
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use Locale::Babelfish::Phrase::Variable (); |
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use Locale::Babelfish::Phrase::PluralForms (); |
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use Locale::Babelfish::Phrase::PluralFormsParser (); |
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use parent qw( Locale::Babelfish::Phrase::ParserBase ); |
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our $VERSION = '2.003'; # VERSION |
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__PACKAGE__->mk_accessors( qw( locale mode pieces escape pf0 ) ); |
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use constant { |
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LITERAL_MODE => 'Locale::Babelfish::Phrase::Literal', |
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VARIABLE_MODE => 'Locale::Babelfish::Phrase::Variable', |
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PLURALS_MODE => 'Locale::Babelfish::Phrase::PluralForms', |
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VARIABLE_RE => qr/^[a-zA-Z0-9_\.]+$/, |
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}; |
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sub new { |
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my ( $class, $phrase, $locale ) = @_; |
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my $self = $class->SUPER::new( $phrase ); |
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$self->locale( $locale ) if $locale; |
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return $self; |
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} |
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sub init { |
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my ( $self, $phrase ) = @_; |
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$self->SUPER::init( $phrase ); |
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$self->mode( LITERAL_MODE ); |
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$self->pieces( [] ); |
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$self->pf0( undef ); # plural forms without name yet |
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return $self; |
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} |
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sub finalize_mode { |
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my ( $self ) = @_; |
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if ( $self->mode eq LITERAL_MODE ) { |
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push @{ $self->pieces }, LITERAL_MODE->new( text => $self->piece ) |
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if length($self->piece) || scalar(@{ $self->pieces }) == 0; |
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} |
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elsif ( $self->mode eq VARIABLE_MODE ) { |
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$self->throw( "Variable definition not ended with \"}\": ". $self->piece ); |
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} |
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elsif ( $self->mode eq PLURALS_MODE ) { |
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$self->throw( "Plural forms definition not ended with \"))\": ". $self->piece ) |
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unless defined $self->pf0; |
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push @{ $self->pieces }, PLURALS_MODE->new( forms => $self->pf0, name => $self->piece, locale => $self->locale, ); |
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} |
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else { |
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$self->throw( "Logic broken, unknown parser mode: ". $self->mode ); |
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} |
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} |
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sub parse { |
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my ( $self, $phrase, $locale ) = @_; |
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$self->SUPER::parse( $phrase ); |
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$self->locale( $locale ) if $locale; |
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my $plurals_parser = Locale::Babelfish::Phrase::PluralFormsParser->new(); |
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while ( 1 ) { |
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my $char = $self->to_next_char; |
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unless ( length $char ) { |
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$self->finalize_mode; |
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return $self->pieces; |
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} |
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if ( $self->mode eq LITERAL_MODE ) { |
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if ( $self->escape ) { |
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$self->add_to_piece( $char ); |
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$self->escape(0); |
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next; |
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} |
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if ( $char eq "\\" ) { |
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$self->escape( 1 ); |
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next; |
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} |
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if ( $char eq '#' && $self->next_char eq '{' ) { |
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if ( length $self->piece ) { |
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push @{ $self->pieces }, LITERAL_MODE->new( text => $self->piece ); |
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$self->piece(''); |
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} |
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$self->to_next_char; # skip "{" |
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$self->mode( VARIABLE_MODE ); |
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next; |
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} |
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if ( $char eq '(' && $self->next_char eq '(' ) { |
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if ( length $self->piece ) { |
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push @{ $self->pieces }, LITERAL_MODE->new( text => $self->piece ); |
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$self->piece(''); |
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} |
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$self->to_next_char; # skip second "(" |
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$self->mode( PLURALS_MODE ); |
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next; |
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} |
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} |
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1136
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100
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17414
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if ( $self->mode eq VARIABLE_MODE ) { |
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2035
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if ( $self->escape ) { |
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0
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0
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$self->add_to_piece( $char ); |
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0
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$self->escape(0); |
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next; |
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} |
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122
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534
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if ( $char eq "\\" ) { |
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$self->escape( 1 ); |
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next; |
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} |
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if ( $char eq '}' ) { |
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my $name = $self->trim( $self->piece ); |
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unless ( length $name ) { |
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$self->throw( "No variable name given." ); |
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} |
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if ( $name !~ VARIABLE_RE ) { |
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$self->throw( "Variable name doesn't meet conditions: $name." ); |
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} |
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push @{ $self->pieces }, VARIABLE_MODE->new( name => $name ); |
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285
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136
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283
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$self->piece(''); |
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343
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$self->mode( LITERAL_MODE ); |
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next; |
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} |
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} |
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1116
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18194
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if ( $self->mode eq PLURALS_MODE ) { |
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6942
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if ( defined $self->pf0 ) { |
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484
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if ( $char =~ VARIABLE_RE && ($char ne '.' || $self->next_char =~ VARIABLE_RE) ) { |
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$self->add_to_piece( $char ); |
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449
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next; |
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} |
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else { |
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52
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push @{ $self->pieces }, PLURALS_MODE->new( forms => $self->pf0, name => $self->piece, locale => $self->locale, ); |
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119
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150
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$self->pf0( undef ); |
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$self->mode( LITERAL_MODE ); |
152
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177
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$self->piece(''); |
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$self->backward; |
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327
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next; |
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} |
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} |
157
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354
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100
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1665
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if ( $char eq ')' && $self->next_char eq ')' ) { |
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590
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$self->pf0( $plurals_parser->parse( $self->piece ) ); |
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874
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$self->piece(''); |
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$self->to_next_char; # skip second ")" |
161
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357
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if ( $self->next_char eq ':' ) { |
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304
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$self->to_next_char; # skip ":" |
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286
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next; |
164
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} |
165
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87
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push @{ $self->pieces }, PLURALS_MODE->new( forms => $self->pf0, name => 'count', locale => $self->locale, ); |
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64
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$self->pf0( undef ); |
167
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70
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$self->mode( LITERAL_MODE ); |
168
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27
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next; |
169
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} |
170
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} |
171
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1037
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4101
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$self->add_to_piece( $char ); |
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} # while ( 1 ) |
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} |
174
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175
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1; |
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177
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__END__ |
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179
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=pod |
180
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181
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=encoding UTF-8 |
182
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183
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=head1 NAME |
184
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185
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Locale::Babelfish::Phrase::Parser - Babelfish syntax parser. |
186
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187
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|
=head1 VERSION |
188
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189
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version 2.003 |
190
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191
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=head1 METHODS |
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193
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=head2 new |
194
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195
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$class->new() |
196
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$class->new( $phrase ) |
197
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198
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Instantiates parser. |
199
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200
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=head2 init |
201
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202
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Initializes parser. Should not be called directly. |
203
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204
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=head2 finalize_mode |
205
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206
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Finalizes all operations after phrase end. |
207
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208
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=head2 parse |
209
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210
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$parser->parse() |
211
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$parser->parse( $phrase ) |
212
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213
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Parses specified phrase. |
214
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215
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=head1 AUTHORS |
216
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217
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=over 4 |
218
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219
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=item * |
220
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221
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Akzhan Abdulin <akzhan@cpan.org> |
222
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223
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=item * |
224
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225
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Igor Mironov <grif@cpan.org> |
226
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227
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=item * |
228
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229
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Victor Efimov <efimov@reg.ru> |
230
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231
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=item * |
232
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233
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REG.RU LLC |
234
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235
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=back |
236
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237
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=head1 COPYRIGHT AND LICENSE |
238
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239
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This software is Copyright (c) 2014 by REG.RU LLC. |
240
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241
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This is free software, licensed under: |
242
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243
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The MIT (X11) License |
244
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245
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=cut |