1 | # -*- mode: ruby; ruby-indent-level: 4 -*- vim: sw=4
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2 | #
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3 | # Classes required by the full core typeset
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4 | #
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5 |
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6 | module YAML
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7 |
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8 | #
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9 | # Default private type
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10 | #
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11 | class PrivateType
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12 | def self.tag_subclasses?; false; end
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13 | attr_accessor :type_id, :value
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14 | verbose, $VERBOSE = $VERBOSE, nil
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15 | def initialize( type, val )
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16 | @type_id = type; @value = val
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17 | @value.taguri = "x-private:#{ @type_id }"
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18 | end
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19 | def to_yaml( opts = {} )
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20 | @value.to_yaml( opts )
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21 | end
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22 | ensure
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23 | $VERBOSE = verbose
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24 | end
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25 |
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26 | #
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27 | # Default domain type
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28 | #
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29 | class DomainType
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30 | def self.tag_subclasses?; false; end
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31 | attr_accessor :domain, :type_id, :value
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32 | verbose, $VERBOSE = $VERBOSE, nil
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33 | def initialize( domain, type, val )
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34 | @domain = domain; @type_id = type; @value = val
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35 | @value.taguri = "tag:#{ @domain }:#{ @type_id }"
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36 | end
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37 | def to_yaml( opts = {} )
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38 | @value.to_yaml( opts )
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39 | end
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40 | ensure
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41 | $VERBOSE = verbose
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42 | end
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43 |
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44 | #
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45 | # Unresolved objects
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46 | #
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47 | class Object
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48 | def self.tag_subclasses?; false; end
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49 | def to_yaml( opts = {} )
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50 | YAML::quick_emit( object_id, opts ) do |out|
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51 | out.map( "tag:ruby.yaml.org,2002:object:#{ @class }", to_yaml_style ) do |map|
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52 | @ivars.each do |k,v|
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53 | map.add( k, v )
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54 | end
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55 | end
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56 | end
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57 | end
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58 | end
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59 |
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60 | #
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61 | # YAML Hash class to support comments and defaults
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62 | #
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63 | class SpecialHash < ::Hash
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64 | attr_accessor :default
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65 | def inspect
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66 | self.default.to_s
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67 | end
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68 | def to_s
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69 | self.default.to_s
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70 | end
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71 | def update( h )
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72 | if YAML::SpecialHash === h
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73 | @default = h.default if h.default
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74 | end
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75 | super( h )
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76 | end
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77 | def to_yaml( opts = {} )
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78 | opts[:DefaultKey] = self.default
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79 | super( opts )
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80 | end
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81 | end
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82 |
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83 | #
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84 | # Builtin collection: !omap
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85 | #
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86 | class Omap < ::Array
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87 | yaml_as "tag:yaml.org,2002:omap"
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88 | def yaml_initialize( tag, val )
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89 | if Array === val
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90 | val.each do |v|
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91 | if Hash === v
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92 | concat( v.to_a ) # Convert the map to a sequence
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93 | else
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94 | raise YAML::Error, "Invalid !omap entry: " + val.inspect
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95 | end
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96 | end
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97 | else
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98 | raise YAML::Error, "Invalid !omap: " + val.inspect
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99 | end
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100 | self
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101 | end
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102 | def self.[]( *vals )
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103 | o = Omap.new
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104 | 0.step( vals.length - 1, 2 ) do |i|
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105 | o[vals[i]] = vals[i+1]
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106 | end
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107 | o
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108 | end
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109 | def []( k )
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110 | self.assoc( k ).to_a[1]
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111 | end
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112 | def []=( k, *rest )
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113 | val, set = rest.reverse
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114 | if ( tmp = self.assoc( k ) ) and not set
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115 | tmp[1] = val
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116 | else
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117 | self << [ k, val ]
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118 | end
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119 | val
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120 | end
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121 | def has_key?( k )
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122 | self.assoc( k ) ? true : false
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123 | end
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124 | def is_complex_yaml?
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125 | true
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126 | end
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127 | def to_yaml( opts = {} )
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128 | YAML::quick_emit( self.object_id, opts ) do |out|
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129 | out.seq( taguri, to_yaml_style ) do |seq|
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130 | self.each do |v|
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131 | seq.add( Hash[ *v ] )
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132 | end
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133 | end
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134 | end
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135 | end
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136 | end
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137 |
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138 | #
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139 | # Builtin collection: !pairs
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140 | #
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141 | class Pairs < ::Array
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142 | yaml_as "tag:yaml.org,2002:pairs"
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143 | def yaml_initialize( tag, val )
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144 | if Array === val
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145 | val.each do |v|
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146 | if Hash === v
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147 | concat( v.to_a ) # Convert the map to a sequence
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148 | else
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149 | raise YAML::Error, "Invalid !pairs entry: " + val.inspect
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150 | end
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151 | end
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152 | else
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153 | raise YAML::Error, "Invalid !pairs: " + val.inspect
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154 | end
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155 | self
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156 | end
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157 | def self.[]( *vals )
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158 | p = Pairs.new
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159 | 0.step( vals.length - 1, 2 ) { |i|
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160 | p[vals[i]] = vals[i+1]
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161 | }
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162 | p
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163 | end
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164 | def []( k )
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165 | self.assoc( k ).to_a
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166 | end
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167 | def []=( k, val )
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168 | self << [ k, val ]
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169 | val
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170 | end
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171 | def has_key?( k )
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172 | self.assoc( k ) ? true : false
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173 | end
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174 | def is_complex_yaml?
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175 | true
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176 | end
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177 | def to_yaml( opts = {} )
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178 | YAML::quick_emit( self.object_id, opts ) do |out|
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179 | out.seq( taguri, to_yaml_style ) do |seq|
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180 | self.each do |v|
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181 | seq.add( Hash[ *v ] )
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182 | end
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183 | end
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184 | end
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185 | end
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186 | end
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187 |
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188 | #
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189 | # Builtin collection: !set
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190 | #
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191 | class Set < ::Hash
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192 | yaml_as "tag:yaml.org,2002:set"
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193 | end
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194 | end
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