diff options
Diffstat (limited to 'ruby_1_9_3/ext/psych/lib/psych/coder.rb')
-rw-r--r-- | ruby_1_9_3/ext/psych/lib/psych/coder.rb | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/ruby_1_9_3/ext/psych/lib/psych/coder.rb b/ruby_1_9_3/ext/psych/lib/psych/coder.rb new file mode 100644 index 0000000000..2b830d2b21 --- /dev/null +++ b/ruby_1_9_3/ext/psych/lib/psych/coder.rb @@ -0,0 +1,94 @@ +module Psych + ### + # If an object defines +encode_with+, then an instance of Psych::Coder will + # be passed to the method when the object is being serialized. The Coder + # automatically assumes a Psych::Nodes::Mapping is being emitted. Other + # objects like Sequence and Scalar may be emitted if +seq=+ or +scalar=+ are + # called, respectively. + class Coder + attr_accessor :tag, :style, :implicit, :object + attr_reader :type, :seq + + def initialize tag + @map = {} + @seq = [] + @implicit = false + @type = :map + @tag = tag + @style = Psych::Nodes::Mapping::BLOCK + @scalar = nil + @object = nil + end + + def scalar *args + if args.length > 0 + warn "#{caller[0]}: Coder#scalar(a,b,c) is deprecated" if $VERBOSE + @tag, @scalar, _ = args + @type = :scalar + end + @scalar + end + + # Emit a map. The coder will be yielded to the block. + def map tag = @tag, style = @style + @tag = tag + @style = style + yield self if block_given? + @map + end + + # Emit a scalar with +value+ and +tag+ + def represent_scalar tag, value + self.tag = tag + self.scalar = value + end + + # Emit a sequence with +list+ and +tag+ + def represent_seq tag, list + @tag = tag + self.seq = list + end + + # Emit a sequence with +map+ and +tag+ + def represent_map tag, map + @tag = tag + self.map = map + end + + # Emit an arbitrary object +obj+ and +tag+ + def represent_object tag, obj + @tag = tag + @type = :object + @object = obj + end + + # Emit a scalar with +value+ + def scalar= value + @type = :scalar + @scalar = value + end + + # Emit a map with +value+ + def map= map + @type = :map + @map = map + end + + def []= k, v + @type = :map + @map[k] = v + end + alias :add :[]= + + def [] k + @type = :map + @map[k] + end + + # Emit a sequence of +list+ + def seq= list + @type = :seq + @seq = list + end + end +end |