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stmt |
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cond |
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pod |
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code |
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35
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use strict; use warnings; |
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144
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259
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package assign::0; |
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4
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our $VERSION = '0.0.15'; |
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6
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5
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5
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2112
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use assign::Array; |
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1883
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5
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146
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7
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5
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5
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1905
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use assign::Hash; |
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15
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5
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135
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8
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5
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2804
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use Filter::Simple; |
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113747
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5
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31
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10
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5
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5
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3080
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use PPI; |
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5
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570489
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5
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232
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11
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5
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5
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50
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use XXX; |
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10
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5
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37
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12
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13
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our $var_prefix = '___'; |
14
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our $var_id = 1000; |
15
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our $var_suffix = ''; |
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17
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sub new { |
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22
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22
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0
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48
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my $class = shift; |
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22
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74
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my $self = bless { @_ }, $class; |
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my $code = $self->{code} |
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22
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50
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129
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or die "$class\->new requires 'code' string"; |
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100
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114
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$self->{line} //= 0; |
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22
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171
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$self->{doc} = PPI::Document->new(\$code); |
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22
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321459
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$self->{doc}->index_locations; |
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22
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70798
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return $self; |
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} |
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28
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# FILTER_ONLY code_no_comments => \&filter; |
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FILTER_ONLY all => \&filter; |
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31
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sub filter { |
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6
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6
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0
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4401
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my ($class) = @_; |
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6
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86
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$_ = $class->new( |
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code => $_, |
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line => ([caller(4)])->[2], |
36
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)->transform(); |
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}; |
38
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39
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sub debug { |
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1
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1
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0
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123
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my ($class, $code) = @_; |
41
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1
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50
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9
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if (ref($code) eq 'SCALAR') { |
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50
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42
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0
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0
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$code = $$code; |
43
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} elsif (not ref($code)) { |
44
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1
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50
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31
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if (not -f $code) { |
45
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0
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0
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XXX $code; |
46
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0
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0
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die "Argument to $class\->debug() is not a valid file.\n" . |
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"Code strings need to be passed as scalar refs."; |
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} |
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1
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50
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44
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open my $fh, $code or die "Can't open '$code' for input"; |
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1
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6
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$code = do { local $/; <$fh> }; |
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1
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7
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1
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48
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51
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} else { |
52
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0
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0
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die "Invalid arguments for $class->debug(...)"; |
53
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} |
54
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1
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12
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$class->new(code => $code)->transform; |
55
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} |
56
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57
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sub transform { |
58
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22
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22
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0
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93
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my ($self) = @_; |
59
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60
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# Call the various possible assignment transformations: |
61
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22
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93
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$self->transform_assignment_statements_with_decl; |
62
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22
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127
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$self->transform_assignment_statements_no_decl; |
63
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# ... more to come ... |
64
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65
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22
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99
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$self->{doc}->serialize; |
66
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} |
67
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68
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sub transform_assignment_statements_with_decl { |
69
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22
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22
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0
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48
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my ($self) = @_; |
70
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71
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22
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59
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for my $node ($self->find_assignment_statements_with_decl) { |
72
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22
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59
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my ($decl, $lhs, $oper, @rhs) = $node->schildren; |
73
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22
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418
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my $rhs = join '', map $_->content, @rhs; |
74
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22
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485
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$self->transform_assignment_statement( |
75
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$node, $decl, $lhs, $oper, $rhs, |
76
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); |
77
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} |
78
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} |
79
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80
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sub transform_assignment_statements_no_decl { |
81
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22
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22
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0
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3142
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my ($self) = @_; |
82
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83
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22
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65
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for my $node ($self->find_assignment_statements_no_decl) { |
84
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2
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7
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my $decl = ''; |
85
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2
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8
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my ($lhs, $oper, @rhs) = $node->schildren; |
86
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2
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34
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my $rhs = join '', map $_->content, @rhs; |
87
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2
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21
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$self->transform_assignment_statement( |
88
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$node, $decl, $lhs, $oper, $rhs, |
89
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); |
90
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} |
91
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} |
92
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93
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sub find_assignment_statements_with_decl { |
94
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22
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22
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0
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47
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my ($self) = @_; |
95
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96
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22
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100
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342
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map { $_ ||= []; @$_ } |
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22
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114
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97
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$self->{doc}->find(sub { |
98
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2737
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2737
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29956
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my $n = $_[1]; |
99
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return 0 unless |
100
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$n->isa('PPI::Statement::Variable') and |
101
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2737
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100
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100
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8602
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@{[$n->schildren]} >= 5 and |
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61
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66
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151
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66
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100
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66
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66
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66
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102
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$n->schild(0)->isa('PPI::Token::Word') and |
103
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$n->schild(0)->content =~ /^(my|our|local)$/ and |
104
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( |
105
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$n->schild(1)->isa('PPI::Structure::Constructor') or |
106
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$n->schild(1)->isa('PPI::Structure::Block') |
107
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) and |
108
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# or PPI::Structure::Block |
109
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$n->schild(2)->isa('PPI::Token::Operator') and |
110
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$n->schild(2)->content eq '='; |
111
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22
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216
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}); |
112
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} |
113
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114
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sub find_assignment_statements_no_decl { |
115
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22
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22
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0
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43
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my ($self) = @_; |
116
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117
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22
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100
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325
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map { $_ ||= []; @$_ } |
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22
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152
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118
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$self->{doc}->find(sub { |
119
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3612
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3612
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38260
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my $n = $_[1]; |
120
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return 0 unless |
121
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ref($n) eq 'PPI::Statement' and |
122
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3612
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100
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100
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9204
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@{[$n->schildren]} >= 4 and |
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137
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66
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317
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100
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66
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66
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123
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( |
124
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$n->schild(0)->isa('PPI::Structure::Constructor') or |
125
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$n->schild(0)->isa('PPI::Structure::Block') |
126
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) and |
127
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$n->schild(1)->isa('PPI::Token::Operator') and |
128
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$n->schild(1)->content eq '='; |
129
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22
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163
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}); |
130
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} |
131
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132
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sub transform_assignment_statement { |
133
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24
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24
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0
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87
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my ($self, $node, $decl, $lhs, $oper, $rhs) = @_; |
134
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135
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24
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100
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115
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$decl = $decl ? $decl->{content} . ' ' : ''; |
136
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24
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51
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$oper = $oper->{content}; |
137
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138
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24
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50
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56
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my $class = |
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100
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139
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$lhs->start->content eq '[' ? 'assign::Array' : |
140
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$lhs->start->content eq '{' ? 'assign::Hash' : |
141
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ZZZ $node, "Unsupported statement"; |
142
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143
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24
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197
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my $from; |
144
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24
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110
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my $init = []; |
145
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24
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100
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144
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if ($rhs =~ /^(\$\w+);/) { |
146
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16
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56
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$from = $1; |
147
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} else { |
148
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8
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37
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$from = $self->gen_var; |
149
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8
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57
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push @$init, "my $from = $rhs"; |
150
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} |
151
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152
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24
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156
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my $code = $class->new( |
153
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node => $lhs, |
154
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)->parse->gen_code($decl, $oper, $from, $init); |
155
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156
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24
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204
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$self->replace_statement_node($node, $code); |
157
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158
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24
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108
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return; |
159
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} |
160
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161
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sub gen_var { |
162
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8
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8
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0
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20
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$var_id++; |
163
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8
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36
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return "\$$var_prefix$var_id$var_suffix"; |
164
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} |
165
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166
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sub replace_statement_node { |
167
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24
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24
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0
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59
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my ($self, $node, $code) = @_; |
168
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24
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116
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my $line_number = $node->last_token->logical_line_number + $self->{line}; |
169
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$node->insert_after($_->remove) |
170
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24
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873
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for reverse PPI::Document->new(\"\n#line $line_number")->elements; |
171
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$node->insert_after($_->remove) |
172
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24
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15021
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for reverse PPI::Document->new(\$code)->elements; |
173
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24
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165954
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$node->remove; |
174
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24
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1491
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return; |
175
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} |
176
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177
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1; |