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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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13 base => [
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14 qw(
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15 &is
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173
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16 &clone
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167
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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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31
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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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168
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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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167
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56 )
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57 ]
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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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62 use constant {
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63 ACCESS_PUBLIC => 1,
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64 ACCESS_PROTECTED => 2,
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65 ACCESS_PRIVATE => 3,
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66 PROP_GET => 1,
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67 PROP_SET => 2,
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68 PROP_OWNERSET => 10,
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69 PROP_LIST => 4,
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70 PROP_ALL => 3
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71 };
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164
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72
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73 sub is($$) {
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167
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74 eval { $_[0]->isa( $_[1] ) };
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75 }
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76
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77 sub virtual($) {
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78 $_[0]->Virtual(1);
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79 $_[0];
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80 }
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81
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82 sub public($) {
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83 $_[0]->Access(ACCESS_PUBLIC);
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84 $_[0]->Implement;
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85 $_[0];
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86 }
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87
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88 sub private($) {
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89 $_[0]->Access(ACCESS_PRIVATE);
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90 $_[0]->Implement;
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91 $_[0];
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92 }
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93
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94 sub protected($) {
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95 $_[0]->Access(ACCESS_PROTECTED);
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96 $_[0]->Implement;
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97 $_[0];
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164
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98 }
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99
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167
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100 sub property($$;$) {
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101 my ( $propName, $mutators, $attributes ) = @_;
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102 my $Info = new IMPL::Class::PropertyInfo(
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103 {
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104 Name => $propName,
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105 Mutators => $mutators,
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106 Class => scalar(caller),
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107 Attributes => $attributes
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108 }
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109 );
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110 return $Info;
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111 }
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112
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113 sub static($$) {
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114 my ( $name, $value ) = @_;
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115 my $class = caller;
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116 $class->static_accessor( $name, $value );
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117 }
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118
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119 sub equals {
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120 if (defined $_[0]) {
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121 return 0 if (not defined $_[1]);
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122
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123 return $_[0] == $_[1];
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124 } else {
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125 return 0 if defined $_[1];
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126
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127 return 1;
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128 }
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129 }
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130
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131 sub equals_s {
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132 if (defined $_[0]) {
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133 return 0 if (not defined $_[1]);
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134
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135 return $_[0] eq $_[1];
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136 } else {
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137 return 0 if defined $_[1];
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138
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139 return 1;
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140 }
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141 }
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142
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168
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143 sub hashDiff {
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144 my ($src,$dst) = @_;
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145
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169
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146 $dst = $dst ? { %$dst } : {} ;
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147 $src ||= {};
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168
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148
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149 my %result;
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150
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151 foreach my $key ( keys %$src ) {
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152 if (exists $dst->{$key}) {
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153 $result{"+$key"} = $dst->{$key} unless equals_s($dst->{$key}, $src->{$key});
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154 delete $dst->{$key};
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155 } else {
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156 $result{"-$key"} = 1;
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157 }
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158 }
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159
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160 $result{"+$_"} = $dst->{$_} foreach keys %$dst;
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161
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162 return \%result;
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163 }
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164
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165 sub hashMerge {
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166 return hashApply( { %{$_[0]} }, $_[1] );
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167 }
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168
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169 sub hashApply {
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170 my ($target,$diff) = @_;
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171
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172 while ( my ($key,$value) = each %$diff) {
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173 $key =~ /^(\+|-)?(.*)$/;
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174 my $op = $1 || '+';
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175 $key = $2;
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176
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177 if ($op eq '-') {
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178 delete $target->{$key};
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179 } else {
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180 $target->{$key} = $value;
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181 }
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182 }
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183
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184 return $target;
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185 }
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186
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187 sub hashCompare {
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188 my ($l,$r,$cmp) = @_;
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189
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190 $cmp ||= \&equals_s;
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191
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192 return 0 unless scalar keys %$l == scalar keys %$r;
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193 &$cmp($l->{$_},$r->{$_}) || return 0 foreach keys %$l;
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194
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195 return 1;
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196 }
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197
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167
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198 1;
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