Class: Psych::Visitors::YAMLTree
- Defined in:
- lib/psych/visitors/yaml_tree.rb,
ext/psych/psych_yaml_tree.c
Overview
Direct Known Subclasses
Defined Under Namespace
Classes: Registrar
Instance Attribute Summary collapse
-
#finished ⇒ Object
(also: #finished?)
readonly
Returns the value of attribute finished.
-
#started ⇒ Object
(also: #started?)
readonly
Returns the value of attribute started.
Class Method Summary collapse
Instance Method Summary collapse
- #accept(target) ⇒ Object
- #finish ⇒ Object
-
#initialize(emitter, ss, options) ⇒ YAMLTree
constructor
A new instance of YAMLTree.
- #push(object) ⇒ Object (also: #<<)
- #start(encoding = Nodes::Stream::UTF8) ⇒ Object
- #tree ⇒ Object
- #visit_Array(o) ⇒ Object
- #visit_BasicObject(o) ⇒ Object
- #visit_BigDecimal(o) ⇒ Object
- #visit_Class(o) ⇒ Object
- #visit_Complex(o) ⇒ Object
- #visit_Date(o) ⇒ Object
- #visit_DateTime(o) ⇒ Object
- #visit_Encoding(o) ⇒ Object
- #visit_Enumerator(o) ⇒ Object
- #visit_Exception(o) ⇒ Object
- #visit_Float(o) ⇒ Object
- #visit_Hash(o) ⇒ Object
- #visit_Integer(o) ⇒ Object (also: #visit_TrueClass, #visit_FalseClass)
- #visit_Module(o) ⇒ Object
- #visit_NameError(o) ⇒ Object
- #visit_NilClass(o) ⇒ Object
- #visit_Object(o) ⇒ Object (also: #visit_Delegator)
- #visit_Psych_Omap(o) ⇒ Object
- #visit_Psych_Set(o) ⇒ Object
- #visit_Range(o) ⇒ Object
- #visit_Rational(o) ⇒ Object
- #visit_Regexp(o) ⇒ Object
- #visit_String(o) ⇒ Object
- #visit_Struct(o) ⇒ Object
- #visit_Symbol(o) ⇒ Object
- #visit_Time(o) ⇒ Object
Constructor Details
#initialize(emitter, ss, options) ⇒ YAMLTree
Returns a new instance of YAMLTree.
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# File 'lib/psych/visitors/yaml_tree.rb', line 55 def initialize emitter, ss, super() @started = false @finished = false @emitter = emitter @st = Registrar.new @ss = ss @options = @line_width = [:line_width] if @line_width && @line_width < 0 if @line_width == -1 # Treat -1 as unlimited line-width, same as libyaml does. @line_width = nil else fail(ArgumentError, "Invalid line_width #{@line_width}, must be non-negative or -1 for unlimited.") end end @coders = [] @dispatch_cache = Hash.new do |h,klass| method = "visit_#{(klass.name || '').split('::').join('_')}" method = respond_to?(method) ? method : h[klass.superclass] raise(TypeError, "Can't dump #{target.class}") unless method h[klass] = method end.compare_by_identity end |
Instance Attribute Details
#finished ⇒ Object (readonly) Also known as: finished?
Returns the value of attribute finished.
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# File 'lib/psych/visitors/yaml_tree.rb', line 44 def finished @finished end |
#started ⇒ Object (readonly) Also known as: started?
Returns the value of attribute started.
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# File 'lib/psych/visitors/yaml_tree.rb', line 44 def started @started end |
Class Method Details
.create(options = {}, emitter = nil) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 48 def self.create = {}, emitter = nil emitter ||= TreeBuilder.new class_loader = ClassLoader.new ss = ScalarScanner.new class_loader new(emitter, ss, ) end |
Instance Method Details
#accept(target) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 122 def accept target # return any aliases we find if @st.key? target oid = @st.id_for target node = @st.node_for target anchor = oid.to_s node.anchor = anchor return @emitter.alias anchor end if target.respond_to?(:encode_with) dump_coder target else send(@dispatch_cache[target.class], target) end end |
#finish ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 91 def finish @emitter.end_stream.tap do @finished = true end end |
#push(object) ⇒ Object Also known as: <<
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# File 'lib/psych/visitors/yaml_tree.rb', line 102 def push object start unless started? version = [] version = [1,1] if @options[:header] case @options[:version] when Array version = @options[:version] when String version = @options[:version].split('.').map { |x| x.to_i } else version = [1,1] end if @options.key? :version @emitter.start_document version, [], false accept object @emitter.end_document !@emitter.streaming? end |
#start(encoding = Nodes::Stream::UTF8) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 85 def start encoding = Nodes::Stream::UTF8 @emitter.start_stream(encoding).tap do @started = true end end |
#tree ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 97 def tree finish unless finished? @emitter.root end |
#visit_Array(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 350 def visit_Array o if o.class == ::Array visit_Enumerator o else visit_array_subclass o end end |
#visit_BasicObject(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 376 def visit_BasicObject o tag = Psych.[o.class] tag ||= "!ruby/marshalable:#{o.class.name}" map = @emitter.start_mapping(nil, tag, false, Nodes::Mapping::BLOCK) register(o, map) o.marshal_dump.each(&method(:accept)) @emitter.end_mapping end |
#visit_BigDecimal(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 250 def visit_BigDecimal o @emitter.scalar o._dump, nil, '!ruby/object:BigDecimal', false, false, Nodes::Scalar::ANY end |
#visit_Class(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 313 def visit_Class o raise TypeError, "can't dump anonymous class: #{o}" unless o.name register o, @emitter.scalar(o.name, nil, '!ruby/class', false, false, Nodes::Scalar::SINGLE_QUOTED) end |
#visit_Complex(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 223 def visit_Complex o register o, @emitter.start_mapping(nil, '!ruby/object:Complex', false, Nodes::Mapping::BLOCK) ['real', o.real.to_s, 'image', o.imag.to_s].each do |m| @emitter.scalar m, nil, nil, true, false, Nodes::Scalar::ANY end @emitter.end_mapping end |
#visit_Date(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 194 def visit_Date o register o, visit_Integer(o.gregorian) end |
#visit_DateTime(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 198 def visit_DateTime o t = o.italy formatted = format_time t, t.offset.zero? tag = '!ruby/object:DateTime' register o, @emitter.scalar(formatted, nil, tag, false, false, Nodes::Scalar::ANY) end |
#visit_Encoding(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 147 def visit_Encoding o tag = "!ruby/encoding" @emitter.scalar o.name, nil, tag, false, false, Nodes::Scalar::ANY end |
#visit_Enumerator(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 358 def visit_Enumerator o register o, @emitter.start_sequence(nil, nil, true, Nodes::Sequence::BLOCK) o.each { |c| accept c } @emitter.end_sequence end |
#visit_Exception(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 182 def visit_Exception o dump_exception o, o..to_s end |
#visit_Float(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 239 def visit_Float o if o.nan? @emitter.scalar '.nan', nil, nil, true, false, Nodes::Scalar::ANY elsif o.infinite? @emitter.scalar((o.infinite? > 0 ? '.inf' : '-.inf'), nil, nil, true, false, Nodes::Scalar::ANY) else @emitter.scalar o.to_s, nil, nil, true, false, Nodes::Scalar::ANY end end |
#visit_Hash(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 326 def visit_Hash o if o.class == ::Hash register(o, @emitter.start_mapping(nil, nil, true, Psych::Nodes::Mapping::BLOCK)) o.each do |k,v| accept k accept v end @emitter.end_mapping else visit_hash_subclass o end end |
#visit_Integer(o) ⇒ Object Also known as: visit_TrueClass, visit_FalseClass
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# File 'lib/psych/visitors/yaml_tree.rb', line 233 def visit_Integer o @emitter.scalar o.to_s, nil, nil, true, false, Nodes::Scalar::ANY end |
#visit_Module(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 308 def visit_Module o raise TypeError, "can't dump anonymous module: #{o}" unless o.name register o, @emitter.scalar(o.name, nil, '!ruby/module', false, false, Nodes::Scalar::SINGLE_QUOTED) end |
#visit_NameError(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 186 def visit_NameError o dump_exception o, o..to_s end |
#visit_NilClass(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 364 def visit_NilClass o @emitter.scalar('', nil, 'tag:yaml.org,2002:null', true, false, Nodes::Scalar::ANY) end |
#visit_Object(o) ⇒ Object Also known as: visit_Delegator
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# File 'lib/psych/visitors/yaml_tree.rb', line 152 def visit_Object o tag = Psych.[o.class] unless tag klass = o.class == Object ? nil : o.class.name tag = ['!ruby/object', klass].compact.join(':') end map = @emitter.start_mapping(nil, tag, false, Nodes::Mapping::BLOCK) register(o, map) dump_ivars o @emitter.end_mapping end |
#visit_Psych_Omap(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 139 def visit_Psych_Omap o seq = @emitter.start_sequence(nil, 'tag:yaml.org,2002:omap', false, Nodes::Sequence::BLOCK) register(o, seq) o.each { |k,v| visit_Hash k => v } @emitter.end_sequence end |
#visit_Psych_Set(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 339 def visit_Psych_Set o register(o, @emitter.start_mapping(nil, '!set', false, Psych::Nodes::Mapping::BLOCK)) o.each do |k,v| accept k accept v end @emitter.end_mapping end |
#visit_Range(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 318 def visit_Range o register o, @emitter.start_mapping(nil, '!ruby/range', false, Nodes::Mapping::BLOCK) ['begin', o.begin, 'end', o.end, 'excl', o.exclude_end?].each do |m| accept m end @emitter.end_mapping end |
#visit_Rational(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 210 def visit_Rational o register o, @emitter.start_mapping(nil, '!ruby/object:Rational', false, Nodes::Mapping::BLOCK) [ 'denominator', o.denominator.to_s, 'numerator', o.numerator.to_s ].each do |m| @emitter.scalar m, nil, nil, true, false, Nodes::Scalar::ANY end @emitter.end_mapping end |
#visit_Regexp(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 190 def visit_Regexp o register o, @emitter.scalar(o.inspect, nil, '!ruby/regexp', false, false, Nodes::Scalar::ANY) end |
#visit_String(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 254 def visit_String o plain = true quote = true style = Nodes::Scalar::PLAIN tag = nil if binary?(o) o = [o].pack('m0') tag = '!binary' # FIXME: change to below when syck is removed #tag = 'tag:yaml.org,2002:binary' style = Nodes::Scalar::LITERAL plain = false quote = false elsif o =~ /\n(?!\Z)/ # match \n except blank line at the end of string style = Nodes::Scalar::LITERAL elsif o == '<<' style = Nodes::Scalar::SINGLE_QUOTED tag = 'tag:yaml.org,2002:str' plain = false quote = false elsif o == 'y' || o == 'n' style = Nodes::Scalar::DOUBLE_QUOTED elsif @line_width && o.length > @line_width style = Nodes::Scalar::FOLDED elsif o =~ /^[^[:word:]][^"]*$/ style = Nodes::Scalar::DOUBLE_QUOTED elsif not String === @ss.tokenize(o) or /\A0[0-7]*[89]/ =~ o style = Nodes::Scalar::SINGLE_QUOTED end is_primitive = o.class == ::String ivars = is_primitive ? [] : o.instance_variables if ivars.empty? unless is_primitive tag = "!ruby/string:#{o.class}" plain = false quote = false end @emitter.scalar o, nil, tag, plain, quote, style else maptag = '!ruby/string'.dup maptag << ":#{o.class}" unless o.class == ::String register o, @emitter.start_mapping(nil, maptag, false, Nodes::Mapping::BLOCK) @emitter.scalar 'str', nil, nil, true, false, Nodes::Scalar::ANY @emitter.scalar o, nil, tag, plain, quote, style dump_ivars o @emitter.end_mapping end end |
#visit_Struct(o) ⇒ Object
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# File 'lib/psych/visitors/yaml_tree.rb', line 168 def visit_Struct o tag = ['!ruby/struct', o.class.name].compact.join(':') register o, @emitter.start_mapping(nil, tag, false, Nodes::Mapping::BLOCK) o.members.each do |member| @emitter.scalar member.to_s, nil, nil, true, false, Nodes::Scalar::ANY accept o[member] end dump_ivars o @emitter.end_mapping end |