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