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package Lingua::LinkParser::MatchPath::BuildSM; |
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use strict; |
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use Data::Dumper; |
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use List::Util qw(max); |
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1146
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#open STDERR, ">/dev/null"; |
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sub print_stat {} |
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sub new { |
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my $class = shift; |
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my $template = shift; |
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bless { |
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_template => $template, |
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_curr_state => 0, |
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_prev_state => 0, |
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_states => { 0 => '' }, |
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_state_stack => [ 0 ], |
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_arc => { |
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}, |
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_fh => undef, # reserved for dumping logs to file |
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_accept_state => undef, |
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_item => [], |
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}, $class; |
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} |
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sub template { $_[0]->{_template} } |
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sub reset { |
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my $self = shift; |
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$self->{_curr_state} = 0; |
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$self->{_prev_state} = 0; |
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$self->{_failed} = undef; |
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$self->{_visited} = undef; |
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$self->{_item} = []; |
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$self->{_state_stack} = [ 0 ]; |
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$self->{_wordptr} = undef; |
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$self->{_label_num} = undef; |
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$self->{_arc_stack} = undef; |
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$self->{_start_position} = undef; |
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$self->{_linkage} = undef; |
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$self->{_built_arc_stack} = undef; |
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} |
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sub dump_arc { |
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my $arc = shift; |
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foreach my $k ('next_state', sort keys %$arc){ |
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print_stat " $k => ".Dumper($arc->{$k})."\n"; |
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} |
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} |
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sub dump_arcs { |
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my $self = shift; |
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local $Data::Dumper::Terse = 1; |
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local $Data::Dumper::Indent = 0; |
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foreach my $state (sort { $a <=> $b } keys %{$self->{_arc}}){ |
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print_stat ">> STATE: $state\n"; |
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foreach my $arc (@{$self->{_arc}->{$state}}){ |
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print_stat dump_arc($arc), $/x2; |
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} |
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} |
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} |
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sub arc_template { |
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my %arg = @_; |
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return { |
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next_state => $arg{next_state}, |
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branch_type => ($arg{branch_type} || 0), |
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branch => $arg{branch}, |
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input_action => $arg{input_action}, |
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label => ($arg{label}), |
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word => ($arg{word}), |
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# this is reserved for negative branching |
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failure => $arg{failure}, |
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} |
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} |
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85
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sub add_state { |
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my $self = shift; |
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my %arg = @_; |
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my $state = $arg{state}; |
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$state = max(keys %{$self->{_states}})+1 unless defined $state; |
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92
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93
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$self->{_prev_state} = $self->{_curr_state}; |
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$self->{_curr_state} = $state; |
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$self->{_states}->{$state} = ''; |
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$self->{_final_state} = $state if $arg{final}; |
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print_stat "ADD STATE $state\n"; |
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} |
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100
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sub push_state { |
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my $self = shift; |
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push @{$self->{_state_stack}}, $self->{_curr_state}; |
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103
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} |
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105
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sub pop_state { |
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0
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my $self = shift; |
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$self->{_curr_state} = pop @{$self->{_state_stack}}; |
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108
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} |
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110
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sub add_arc { |
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0
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my $self = shift; |
112
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0
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my %arg = @_; |
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114
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print_stat "JOIN: $arg{join}\n"; |
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foreach my $prev_state ( |
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$arg{join} && keys %{$self->{_tojoin}} ? |
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(keys %{$self->{_tojoin}}) |
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: |
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($self->{_prev_state}) |
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){ |
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0
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print_stat "ADD ARC ($prev_state -> $self->{_curr_state})\n"; |
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123
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push |
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0
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@{$self->{_arc} |
125
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->{ |
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0
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$prev_state |
127
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}}, |
128
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arc_template( |
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'next_state' => $self->{_curr_state}, |
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%arg, |
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'branch_type' => $self->{_branch_type}, |
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'branch' => $self->{_branch}, |
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'input_action' => $self->{_input_action}, |
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'failure' => $self->{_failure}, |
135
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); |
136
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} |
137
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138
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} |
139
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140
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sub restore_prev_state { |
141
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0
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0
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my $self = shift; |
142
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0
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$self->{_prev_state} = $self->{_pprev_state}; |
143
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} |
144
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145
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sub save_prev_state { |
146
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0
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0
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my $self = shift; |
147
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0
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$self->{_pprev_state} = $self->{_prev_state}; |
148
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} |
149
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150
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sub set_accept_state { |
151
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0
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0
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0
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my $self = shift; |
152
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0
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$self->{_accept_state} = $self->{_curr_state}; |
153
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} |
154
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155
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1; |