Extended maintenance of Ruby 1.9.3 ended on February 23, 2015. Read more
This class walks a YAML AST, converting each node to ruby
# File psych/lib/psych/visitors/to_ruby.rb, line 19 def accept target result = super return result if @domain_types.empty? || !target.tag key = target.tag.sub(/^[!\/]*/, '').sub(/(,\d+)\//, '\1:') key = "tag:#{key}" unless key =~ /^(tag:|x-private)/ if @domain_types.key? key value, block = @domain_types[key] return block.call value, result end result end
# File psych/lib/psych/visitors/to_ruby.rb, line 245 def visit_Psych_Nodes_Alias o @st.fetch(o.anchor) { raise BadAlias, "Unknown alias: #{o.anchor}" } end
# File psych/lib/psych/visitors/to_ruby.rb, line 237 def visit_Psych_Nodes_Document o accept o.root end
# File psych/lib/psych/visitors/to_ruby.rb, line 139 def visit_Psych_Nodes_Mapping o return revive(Psych.load_tags[o.tag], o) if Psych.load_tags[o.tag] return revive_hash({}, o) unless o.tag case o.tag when /^!(?:str|ruby\/string)(?::(.*))?/, 'tag:yaml.org,2002:str' klass = resolve_class($1) members = Hash[*o.children.map { |c| accept c }] string = members.delete 'str' if klass string = klass.allocate.replace string register(o, string) end init_with(string, members.map { |k,v| [k.to_s.sub(/^@/, ''),v] }, o) when /^!ruby\/array:(.*)$/ klass = resolve_class($1) list = register(o, klass.allocate) members = Hash[o.children.map { |c| accept c }.each_slice(2).to_a] list.replace members['internal'] members['ivars'].each do |ivar, v| list.instance_variable_set ivar, v end list when /^!ruby\/struct:?(.*)?$/ klass = resolve_class($1) if klass s = register(o, klass.allocate) members = {} struct_members = s.members.map { |x| x.to_sym } o.children.each_slice(2) do |k,v| member = accept(k) value = accept(v) if struct_members.include?(member.to_sym) s.send("#{member}=", value) else members[member.to_s.sub(/^@/, '')] = value end end init_with(s, members, o) else members = o.children.map { |c| accept c } h = Hash[*members] Struct.new(*h.map { |k,v| k.to_sym }).new(*h.map { |k,v| v }) end when '!ruby/range' h = Hash[*o.children.map { |c| accept c }] register o, Range.new(h['begin'], h['end'], h['excl']) when /^!ruby\/exception:?(.*)?$/ h = Hash[*o.children.map { |c| accept c }] e = build_exception((resolve_class($1) || Exception), h.delete('message')) init_with(e, h, o) when '!set', 'tag:yaml.org,2002:set' set = Psych::Set.new @st[o.anchor] = set if o.anchor o.children.each_slice(2) do |k,v| set[accept(k)] = accept(v) end set when '!ruby/object:Complex' h = Hash[*o.children.map { |c| accept c }] register o, Complex(h['real'], h['image']) when '!ruby/object:Rational' h = Hash[*o.children.map { |c| accept c }] register o, Rational(h['numerator'], h['denominator']) when /^!ruby\/object:?(.*)?$/ name = $1 || 'Object' obj = revive((resolve_class(name) || Object), o) obj when /^!map:(.*)$/, /^!ruby\/hash:(.*)$/ revive_hash resolve_class($1).new, o when '!omap', 'tag:yaml.org,2002:omap' map = register(o, Psych::Omap.new) o.children.each_slice(2) do |l,r| map[accept(l)] = accept r end map else revive_hash({}, o) end end
# File psych/lib/psych/visitors/to_ruby.rb, line 103 def visit_Psych_Nodes_Scalar o register o, deserialize(o) end
# File psych/lib/psych/visitors/to_ruby.rb, line 107 def visit_Psych_Nodes_Sequence o if klass = Psych.load_tags[o.tag] instance = klass.allocate if instance.respond_to?(:init_with) coder = Psych::Coder.new(o.tag) coder.seq = o.children.map { |c| accept c } instance.init_with coder end return instance end case o.tag when '!omap', 'tag:yaml.org,2002:omap' map = register(o, Psych::Omap.new) o.children.each { |a| map[accept(a.children.first)] = accept a.children.last } map when /^!(?:seq|ruby\/array):(.*)$/ klass = resolve_class($1) list = register(o, klass.allocate) o.children.each { |c| list.push accept c } list else list = register(o, []) o.children.each { |c| list.push accept c } list end end
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