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1 | use MooseX::Declare; |
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2 | |
3 | |
4 | class SQL::Abstract { |
5 | |
6 | use Carp qw/croak/; |
7 | use Data::Dump qw/pp/; |
8 | |
9 | use Moose::Util::TypeConstraints; |
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10 | use MooseX::Types -declare => [qw/NameSeparator/]; |
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11 | use MooseX::Types::Moose qw/ArrayRef Str Int/; |
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12 | use MooseX::AttributeHelpers; |
13 | |
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14 | clean; |
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15 | |
16 | subtype NameSeparator, |
17 | as ArrayRef[Str]; |
18 | #where { @$_ == 1 ||| @$_ == 2 }, |
19 | #message { "Name separator must be one or two elements" }; |
20 | |
21 | coerce NameSeparator, from Str, via { [ $_ ] }; |
22 | |
23 | our $VERSION = '2.000000'; |
24 | |
25 | our $AST_VERSION = '1'; |
26 | |
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27 | # Operator precedence for bracketing |
28 | our %PRIO = ( |
29 | and => 10, |
30 | or => 50 |
31 | ); |
32 | |
33 | our %OP_MAP = ( |
34 | '>' => '>', |
35 | '<' => '<', |
36 | '==' => '=', |
37 | '!=' => '!=', |
38 | ); |
39 | |
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40 | has ast_version => ( |
41 | is => 'ro', |
42 | isa => Int, |
43 | required => 1 |
44 | ); |
45 | |
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46 | has name_separator => ( |
47 | is => 'rw', |
48 | isa => NameSeparator, |
49 | default => sub { ['.'] }, |
50 | coerece => 1, |
51 | required => 1, |
52 | ); |
53 | |
54 | has list_separator => ( |
55 | is => 'rw', |
56 | isa => Str, |
57 | default => ', ', |
58 | required => 1, |
59 | ); |
60 | |
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61 | has binds => ( |
62 | isa => ArrayRef, |
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63 | is => 'ro', |
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64 | default => sub { [ ] }, |
65 | metaclass => 'Collection::Array', |
66 | provides => { |
67 | push => 'add_bind', |
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68 | clear => '_clear_binds', |
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69 | } |
70 | ); |
71 | |
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72 | # TODO: once MXMS supports %args, use that here |
73 | method create(ClassName $class: Int $ver) { |
74 | croak "AST version $ver is greater than supported version of $AST_VERSION" |
75 | if $ver > $AST_VERSION; |
76 | |
77 | my $name = "${class}::AST::v$ver"; |
78 | Class::MOP::load_class($name); |
79 | |
80 | return $name->new(ast_version => $ver); |
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81 | } |
82 | |
83 | # Main entry point |
84 | method generate(ClassName $class: ArrayRef $ast) { |
85 | croak "SQL::Abstract AST version not specified" |
86 | unless ($ast->[0] eq '-ast_version'); |
87 | |
88 | my (undef, $ver) = splice(@$ast, 0, 2); |
89 | |
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90 | # TODO: once MXMS supports %args, use that here |
91 | my $self = $class->create($ver); |
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92 | |
93 | return ($self->dispatch($ast), $self->binds); |
94 | } |
95 | |
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96 | |
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97 | }; |