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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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213
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41 &ACCESS_PUBLIC
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42 &ACCESS_PROTECTED
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43 &ACCESS_PRIVATE
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44 &PROP_GET
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45 &PROP_SET
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46 &PROP_OWNERSET
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47 &PROP_LIST
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48 &PROP_ALL
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194
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49 )
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50 ],
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51 compare => [
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52 qw(
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53 &equals
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54 &equals_s
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55 &hashCompare
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56 )
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57 ],
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58 hash => [
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59 qw(
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60 &hashApply
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61 &hashMerge
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62 &hashDiff
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63 &hashCompare
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64 &hashParse
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65 &hashSave
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66 )
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67 ]
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167
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68 );
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69
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70 our @EXPORT_OK = keys %{ { map (($_,1) , map (@{$_}, values %EXPORT_TAGS) ) } };
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71
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72 use constant {
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194
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73 ACCESS_PUBLIC => 1,
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74 ACCESS_PROTECTED => 2,
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75 ACCESS_PRIVATE => 3,
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76 PROP_GET => 1,
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77 PROP_SET => 2,
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78 PROP_OWNERSET => 10,
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79 PROP_LIST => 4,
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80 PROP_ALL => 3
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167
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81 };
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82
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83 sub is($$) {
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194
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84 eval { $_[0]->isa( $_[1] ) };
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167
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85 }
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86
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87 sub virtual($) {
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194
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88 $_[0]->Virtual(1);
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89 $_[0];
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167
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90 }
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91
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92 sub public($) {
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93 $_[0]->Access(ACCESS_PUBLIC);
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94 $_[0]->Implement;
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95 $_[0];
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167
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96 }
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97
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98 sub private($) {
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99 $_[0]->Access(ACCESS_PRIVATE);
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100 $_[0]->Implement;
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101 $_[0];
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102 }
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103
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104 sub protected($) {
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194
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105 $_[0]->Access(ACCESS_PROTECTED);
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106 $_[0]->Implement;
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107 $_[0];
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164
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108 }
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109
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110 sub property($$;$) {
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111 my ( $propName, $mutators, $attributes ) = @_;
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112 my $Info = new IMPL::Class::PropertyInfo(
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113 {
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114 Name => $propName,
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115 Mutators => $mutators,
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116 Class => scalar(caller),
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117 Attributes => $attributes
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118 }
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119 );
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120 return $Info;
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167
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121 }
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122
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123 sub static($$) {
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194
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124 my ( $name, $value ) = @_;
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125 my $class = caller;
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126 $class->static_accessor( $name, $value );
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167
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127 }
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128
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129 sub equals {
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194
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130 if (defined $_[0]) {
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131 return 0 if (not defined $_[1]);
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132
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133 return $_[0] == $_[1];
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134 } else {
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135 return 0 if defined $_[1];
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136
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137 return 1;
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138 }
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167
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139 }
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140
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141 sub equals_s {
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194
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142 if (defined $_[0]) {
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143 return 0 if (not defined $_[1]);
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144
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145 return $_[0] eq $_[1];
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146 } else {
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147 return 0 if defined $_[1];
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148
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149 return 1;
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150 }
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167
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151 }
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152
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168
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153 sub hashDiff {
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194
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154 my ($src,$dst) = @_;
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155
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156 $dst = $dst ? { %$dst } : {} ;
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157 $src ||= {};
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158
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159 my %result;
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160
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161 foreach my $key ( keys %$src ) {
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162 if (exists $dst->{$key}) {
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163 $result{"+$key"} = $dst->{$key} unless equals_s($dst->{$key}, $src->{$key});
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164 delete $dst->{$key};
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165 } else {
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166 $result{"-$key"} = 1;
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167 }
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168 }
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169
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170 $result{"+$_"} = $dst->{$_} foreach keys %$dst;
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171
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172 return \%result;
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168
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173 }
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174
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175 sub hashMerge {
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210
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176 return hashApply( { %{$_[0] || {}} }, $_[1] );
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168
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177 }
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178
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179 sub hashApply {
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194
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180 my ($target,$diff) = @_;
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181
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182 while ( my ($key,$value) = each %$diff) {
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183 $key =~ /^(\+|-)?(.*)$/;
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184 my $op = $1 || '+';
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185 $key = $2;
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186
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187 if ($op eq '-') {
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188 delete $target->{$key};
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189 } else {
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190 $target->{$key} = $value;
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191 }
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192 }
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193
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194 return $target;
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168
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195 }
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196
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197 sub hashCompare {
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194
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198 my ($l,$r,$cmp) = @_;
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199
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200 $cmp ||= \&equals_s;
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201
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202 return 0 unless scalar keys %$l == scalar keys %$r;
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203 &$cmp($l->{$_},$r->{$_}) || return 0 foreach keys %$l;
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204
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205 return 1;
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168
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206 }
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207
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174
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208 sub hashParse {
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194
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209 my ($s,$p,$d) = @_;
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210
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211 $p = $p ? qr/$p/ : qr/\n+/;
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212 $d = $d ? qr/$d/ : qr/\s*=\s*/;
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213
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214 return {
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215 map split($d,$_,2), split($p,$s)
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216 };
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174
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217 }
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218
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219 sub hashSave {
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194
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220 my ($hash,$p,$d) = @_;
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221
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222 return "" unless ref $hash eq 'HASH';
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223
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224 $p ||= "\n";
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225 $d ||= " = ";
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226
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227 return
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228 join(
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229 $p,
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230 map(
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231 join(
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232 $d,
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233 $_,
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234 $hash->{$_}
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235 ),
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236 keys %$hash
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237 )
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238 );
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174
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239 }
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240
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167
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241 1;
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