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164
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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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165
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5 use parent qw(Exporter);
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164
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6 use IMPL::_core::version;
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173
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7 use IMPL::clone qw(clone);
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164
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8
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167
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9 require IMPL::Class::PropertyInfo;
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164
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10
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167
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11 our @EXPORT = qw(&is);
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12 our %EXPORT_TAGS = (
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194
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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 )
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18 ],
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19 constants => [
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20 qw(
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21 &ACCESS_PUBLIC
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22 &ACCESS_PROTECTED
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23 &ACCESS_PRIVATE
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24 &PROP_GET
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25 &PROP_SET
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26 &PROP_OWNERSET
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27 &PROP_LIST
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28 &PROP_ALL
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29 )
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30 ],
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167
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31
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194
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32 declare => [
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33 qw(
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34 &public
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35 &protected
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36 &private
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37 &virtual
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38 &property
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39 &static
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40 &property
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41 )
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42 ],
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43 compare => [
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44 qw(
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45 &equals
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46 &equals_s
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47 &hashCompare
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48 )
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49 ],
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50 hash => [
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51 qw(
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52 &hashApply
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53 &hashMerge
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54 &hashDiff
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55 &hashCompare
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56 &hashParse
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57 &hashSave
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58 )
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59 ]
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167
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60 );
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61
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62 our @EXPORT_OK = keys %{ { map (($_,1) , map (@{$_}, values %EXPORT_TAGS) ) } };
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63
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64 use constant {
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194
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65 ACCESS_PUBLIC => 1,
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66 ACCESS_PROTECTED => 2,
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67 ACCESS_PRIVATE => 3,
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68 PROP_GET => 1,
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69 PROP_SET => 2,
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70 PROP_OWNERSET => 10,
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71 PROP_LIST => 4,
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72 PROP_ALL => 3
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167
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73 };
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164
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74
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75 sub is($$) {
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194
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76 eval { $_[0]->isa( $_[1] ) };
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167
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77 }
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78
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79 sub virtual($) {
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194
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80 $_[0]->Virtual(1);
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81 $_[0];
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167
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82 }
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83
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84 sub public($) {
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194
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85 $_[0]->Access(ACCESS_PUBLIC);
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86 $_[0]->Implement;
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87 $_[0];
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167
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88 }
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89
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90 sub private($) {
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194
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91 $_[0]->Access(ACCESS_PRIVATE);
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92 $_[0]->Implement;
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93 $_[0];
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167
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94 }
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95
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96 sub protected($) {
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194
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97 $_[0]->Access(ACCESS_PROTECTED);
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98 $_[0]->Implement;
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99 $_[0];
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164
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100 }
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101
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102 sub property($$;$) {
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103 my ( $propName, $mutators, $attributes ) = @_;
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104 my $Info = new IMPL::Class::PropertyInfo(
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105 {
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106 Name => $propName,
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107 Mutators => $mutators,
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108 Class => scalar(caller),
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109 Attributes => $attributes
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110 }
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111 );
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112 return $Info;
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167
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113 }
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114
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115 sub static($$) {
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194
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116 my ( $name, $value ) = @_;
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117 my $class = caller;
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118 $class->static_accessor( $name, $value );
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167
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119 }
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120
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121 sub equals {
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194
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122 if (defined $_[0]) {
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123 return 0 if (not defined $_[1]);
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124
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125 return $_[0] == $_[1];
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126 } else {
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127 return 0 if defined $_[1];
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128
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129 return 1;
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130 }
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167
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131 }
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132
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133 sub equals_s {
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194
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134 if (defined $_[0]) {
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135 return 0 if (not defined $_[1]);
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136
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137 return $_[0] eq $_[1];
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138 } else {
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139 return 0 if defined $_[1];
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140
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141 return 1;
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142 }
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167
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143 }
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144
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168
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145 sub hashDiff {
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194
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146 my ($src,$dst) = @_;
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147
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148 $dst = $dst ? { %$dst } : {} ;
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149 $src ||= {};
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150
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151 my %result;
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152
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153 foreach my $key ( keys %$src ) {
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154 if (exists $dst->{$key}) {
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155 $result{"+$key"} = $dst->{$key} unless equals_s($dst->{$key}, $src->{$key});
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156 delete $dst->{$key};
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157 } else {
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158 $result{"-$key"} = 1;
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159 }
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160 }
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161
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162 $result{"+$_"} = $dst->{$_} foreach keys %$dst;
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163
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164 return \%result;
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168
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165 }
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166
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167 sub hashMerge {
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194
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168 return hashApply( { %{$_[0]} }, $_[1] );
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168
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169 }
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170
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171 sub hashApply {
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194
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172 my ($target,$diff) = @_;
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173
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174 while ( my ($key,$value) = each %$diff) {
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175 $key =~ /^(\+|-)?(.*)$/;
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176 my $op = $1 || '+';
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177 $key = $2;
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178
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179 if ($op eq '-') {
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180 delete $target->{$key};
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181 } else {
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182 $target->{$key} = $value;
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183 }
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184 }
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185
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186 return $target;
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168
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187 }
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188
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189 sub hashCompare {
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194
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190 my ($l,$r,$cmp) = @_;
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191
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192 $cmp ||= \&equals_s;
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193
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194 return 0 unless scalar keys %$l == scalar keys %$r;
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195 &$cmp($l->{$_},$r->{$_}) || return 0 foreach keys %$l;
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196
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197 return 1;
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168
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198 }
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199
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174
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200 sub hashParse {
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194
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201 my ($s,$p,$d) = @_;
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202
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203 $p = $p ? qr/$p/ : qr/\n+/;
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204 $d = $d ? qr/$d/ : qr/\s*=\s*/;
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205
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206 return {
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207 map split($d,$_,2), split($p,$s)
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208 };
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174
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209 }
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210
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211 sub hashSave {
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194
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212 my ($hash,$p,$d) = @_;
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213
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214 return "" unless ref $hash eq 'HASH';
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215
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216 $p ||= "\n";
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217 $d ||= " = ";
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218
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219 return
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220 join(
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221 $p,
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222 map(
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223 join(
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224 $d,
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225 $_,
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226 $hash->{$_}
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227 ),
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228 keys %$hash
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229 )
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230 );
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174
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231 }
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232
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167
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233 1;
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