annotate Lib/IMPL/lang.pm @ 286:d357b5d85d25

*TTView refactoring
author sergey
date Mon, 18 Feb 2013 14:46:06 +0400
parents c6d0f889ef87
children 77df11605d3a
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1 package IMPL::lang;
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2 use strict;
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3 use warnings;
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4
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5 use parent qw(Exporter);
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6 use IMPL::_core::version;
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7 use IMPL::clone qw(clone);
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8 use Scalar::Util qw(blessed);
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9 use Carp qw(carp);
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10
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11 our @EXPORT = qw(&is &isclass &typeof);
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12 our %EXPORT_TAGS = (
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13 base => [
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14 qw(
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15 &is
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16 &clone
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17 &isclass
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18 &typeof
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19 )
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20 ],
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21
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22 declare => [
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23 qw(
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24 &public
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25 &protected
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26 &private
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27 &property
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28 &static
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29 &property
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30 &_direct
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31 &ACCESS_PUBLIC
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32 &ACCESS_PROTECTED
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33 &ACCESS_PRIVATE
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34 &PROP_GET
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35 &PROP_SET
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36 &PROP_OWNERSET
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37 &PROP_LIST
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38 &PROP_ALL
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39 &PROP_RO
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40 &PROP_RW
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41 &PROP_DIRECT
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42 )
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43 ],
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44 compare => [
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45 qw(
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46 &equals
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47 &equals_s
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48 &hashCompare
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49 )
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50 ],
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51 hash => [
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52 qw(
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53 &hashApply
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54 &hashMerge
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55 &hashDiff
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56 &hashCompare
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57 &hashParse
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58 &hashSave
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59 )
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60 ]
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61 );
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62
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63 our @EXPORT_OK = keys %{ { map (($_,1) , map (@{$_}, values %EXPORT_TAGS) ) } };
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64
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65 use IMPL::Const qw(:all);
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66
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67 sub is($$) {
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68 carp "A typename can't be undefined" unless $_[1];
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69 eval {ref $_[0] and $_[0]->isa( $_[1] ) };
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70 }
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71
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72 sub isclass {
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73 carp "A typename can't be undefined" unless $_[1];
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74 eval {not ref $_[0] and $_[0]->isa( $_[1] ) };
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75 }
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76
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77 sub typeof(*) {
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78 eval { $_[0]->_typeof } || blessed($_[0]) || ref($_[0]) || $_[0];
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79 }
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80
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81 sub public($) {
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82 my $info = shift;
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83 $info->{access} = ACCESS_PUBLIC;
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84 my $implementor = delete $info->{implementor};
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85 $implementor->Implement($info);
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86 }
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87
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88 sub private($) {
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89 my $info = shift;
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90 $info->{access} = ACCESS_PRIVATE;
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91 my $implementor = delete $info->{implementor};
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92 $implementor->Implement($info);
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93 }
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94
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95 sub protected($) {
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96 my $info = shift;
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97 $info->{access} = ACCESS_PROTECTED;
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98 my $implementor = delete $info->{implementor};
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99 $implementor->Implement($info);
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100 }
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101
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102 sub _direct ($) {
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103 my $info = shift;
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104 $info->{direct} = 1;
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105 return $info;
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106 }
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107
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108 sub property($$) {
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109 my ($propName,$attributes) = @_;
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110
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111 $attributes = {
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112 get => $attributes & PROP_GET,
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113 set => $attributes & PROP_SET,
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114 isList => $attributes & PROP_LIST
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115 } unless ref $attributes;
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116
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117 my $class = caller;
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118
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119 return hashMerge (
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120 $attributes,
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121 {
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122 implementor => $class->ClassPropertyImplementor,
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123 name => $propName,
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124 class => scalar(caller),
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125 }
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126 );
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127 }
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128
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129 sub static($$) {
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130 my ( $name, $value ) = @_;
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131 my $class = caller;
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132 $class->static_accessor( $name, $value );
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133 }
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134
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135 sub equals {
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136 if (defined $_[0]) {
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137 return 0 if (not defined $_[1]);
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138
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139 return $_[0] == $_[1];
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140 } else {
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141 return 0 if defined $_[1];
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142
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143 return 1;
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144 }
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145 }
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146
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147 sub equals_s {
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148 if (defined $_[0]) {
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149 return 0 if (not defined $_[1]);
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150
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151 return $_[0] eq $_[1];
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152 } else {
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153 return 0 if defined $_[1];
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154
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155 return 1;
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156 }
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157 }
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158
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159 sub hashDiff {
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160 my ($src,$dst) = @_;
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161
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162 $dst = $dst ? { %$dst } : {} ;
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163 $src ||= {};
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164
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165 my %result;
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166
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167 foreach my $key ( keys %$src ) {
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168 if (exists $dst->{$key}) {
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169 $result{"+$key"} = $dst->{$key} unless equals_s($dst->{$key}, $src->{$key});
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170 delete $dst->{$key};
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171 } else {
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172 $result{"-$key"} = 1;
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173 }
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174 }
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175
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176 $result{"+$_"} = $dst->{$_} foreach keys %$dst;
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177
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178 return \%result;
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179 }
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180
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181 sub hashMerge {
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182 return hashApply( { %{$_[0] || {}} }, $_[1] );
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183 }
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184
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185 sub hashApply {
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186 my ($target,$diff) = @_;
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187
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188 return $target unless ref $diff eq 'HASH';
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189
194
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190 while ( my ($key,$value) = each %$diff) {
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191 $key =~ /^(\+|-)?(.*)$/;
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192 my $op = $1 || '+';
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193 $key = $2;
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194
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195 if ($op eq '-') {
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196 delete $target->{$key};
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197 } else {
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198 $target->{$key} = $value;
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199 }
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200 }
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201
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202 return $target;
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203 }
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204
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205 sub hashCompare {
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206 my ($l,$r,$cmp) = @_;
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207
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208 $cmp ||= \&equals_s;
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209
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210 return 0 unless scalar keys %$l == scalar keys %$r;
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211 &$cmp($l->{$_},$r->{$_}) || return 0 foreach keys %$l;
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212
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213 return 1;
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214 }
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215
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216 sub hashParse {
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diff changeset
217 my ($s,$p,$d) = @_;
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cin
parents: 181
diff changeset
218
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cin
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219 $p = $p ? qr/$p/ : qr/\n+/;
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cin
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220 $d = $d ? qr/$d/ : qr/\s*=\s*/;
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cin
parents: 181
diff changeset
221
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cin
parents: 181
diff changeset
222 return {
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cin
parents: 181
diff changeset
223 map split($d,$_,2), split($p,$s)
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cin
parents: 181
diff changeset
224 };
174
d920d2b70230 minor changes
sergey
parents: 173
diff changeset
225 }
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sergey
parents: 173
diff changeset
226
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sergey
parents: 173
diff changeset
227 sub hashSave {
194
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cin
parents: 181
diff changeset
228 my ($hash,$p,$d) = @_;
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cin
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diff changeset
229
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cin
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230 return "" unless ref $hash eq 'HASH';
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cin
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diff changeset
231
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cin
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232 $p ||= "\n";
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cin
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diff changeset
233 $d ||= " = ";
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cin
parents: 181
diff changeset
234
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cin
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diff changeset
235 return
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cin
parents: 181
diff changeset
236 join(
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cin
parents: 181
diff changeset
237 $p,
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cin
parents: 181
diff changeset
238 map(
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cin
parents: 181
diff changeset
239 join(
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cin
parents: 181
diff changeset
240 $d,
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cin
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diff changeset
241 $_,
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cin
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diff changeset
242 $hash->{$_}
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cin
parents: 181
diff changeset
243 ),
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cin
parents: 181
diff changeset
244 keys %$hash
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cin
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245 )
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cin
parents: 181
diff changeset
246 );
174
d920d2b70230 minor changes
sergey
parents: 173
diff changeset
247 }
d920d2b70230 minor changes
sergey
parents: 173
diff changeset
248
167
1f7a6d762394 SQL schema in progress
sourcer
parents: 165
diff changeset
249 1;