diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/psych.rb | 238 | ||||
-rw-r--r-- | lib/psych/coder.rb | 68 | ||||
-rw-r--r-- | lib/psych/core_ext.rb | 22 | ||||
-rw-r--r-- | lib/psych/emitter.rb | 4 | ||||
-rw-r--r-- | lib/psych/handler.rb | 215 | ||||
-rw-r--r-- | lib/psych/nodes.rb | 77 | ||||
-rw-r--r-- | lib/psych/nodes/alias.rb | 18 | ||||
-rw-r--r-- | lib/psych/nodes/document.rb | 60 | ||||
-rw-r--r-- | lib/psych/nodes/mapping.rb | 56 | ||||
-rw-r--r-- | lib/psych/nodes/node.rb | 40 | ||||
-rw-r--r-- | lib/psych/nodes/scalar.rb | 67 | ||||
-rw-r--r-- | lib/psych/nodes/sequence.rb | 81 | ||||
-rw-r--r-- | lib/psych/nodes/stream.rb | 37 | ||||
-rw-r--r-- | lib/psych/omap.rb | 4 | ||||
-rw-r--r-- | lib/psych/parser.rb | 44 | ||||
-rw-r--r-- | lib/psych/scalar_scanner.rb | 90 | ||||
-rw-r--r-- | lib/psych/set.rb | 4 | ||||
-rw-r--r-- | lib/psych/tree_builder.rb | 89 | ||||
-rw-r--r-- | lib/psych/visitors.rb | 5 | ||||
-rw-r--r-- | lib/psych/visitors/emitter.rb | 41 | ||||
-rw-r--r-- | lib/psych/visitors/json_tree.rb | 37 | ||||
-rw-r--r-- | lib/psych/visitors/to_ruby.rb | 252 | ||||
-rw-r--r-- | lib/psych/visitors/visitor.rb | 18 | ||||
-rw-r--r-- | lib/psych/visitors/yaml_tree.rb | 312 |
24 files changed, 0 insertions, 1879 deletions
diff --git a/lib/psych.rb b/lib/psych.rb deleted file mode 100644 index c14259373a..0000000000 --- a/lib/psych.rb +++ /dev/null @@ -1,238 +0,0 @@ -require 'psych/psych' -require 'psych/nodes' -require 'psych/visitors' -require 'psych/handler' -require 'psych/tree_builder' -require 'psych/parser' -require 'psych/omap' -require 'psych/set' -require 'psych/coder' -require 'psych/core_ext' - -### -# = Overview -# -# Psych is a YAML parser and emitter. Psych leverages -# libyaml[http://libyaml.org] for it's YAML parsing and emitting capabilities. -# In addition to wrapping libyaml, Psych also knows how to serialize and -# de-serialize most Ruby objects to and from the YAML format. -# -# = I NEED TO PARSE OR EMIT YAML RIGHT NOW! -# -# # Parse some YAML -# Psych.load("--- foo") # => "foo" -# -# # Emit some YAML -# Psych.dump("foo") # => "--- foo\n...\n" -# { :a => 'b'}.to_yaml # => "---\n:a: b\n" -# -# Got more time on your hands? Keep on reading! -# -# == YAML Parsing -# -# Psych provides a range of interfaces for parsing a YAML document ranging from -# low level to high level, depending on your parsing needs. At the lowest -# level, is an event based parser. Mid level is access to the raw YAML AST, -# and at the highest level is the ability to unmarshal YAML to ruby objects. -# -# === Low level parsing -# -# The lowest level parser should be used when the YAML input is already known, -# and the developer does not want to pay the price of building an AST or -# automatic detection and conversion to ruby objects. See Psych::Parser for -# more information on using the event based parser. -# -# === Mid level parsing -# -# Psych provides access to an AST produced from parsing a YAML document. This -# tree is built using the Psych::Parser and Psych::TreeBuilder. The AST can -# be examined and manipulated freely. Please see Psych::parse_stream, -# Psych::Nodes, and Psych::Nodes::Node for more information on dealing with -# YAML syntax trees. -# -# === High level parsing -# -# The high level YAML parser provided by Psych simply takes YAML as input and -# returns a Ruby data structure. For information on using the high level parser -# see Psych.load -# -# == YAML Emitting -# -# Psych provides a range of interfaces ranging from low to high level for -# producing YAML documents. Very similar to the YAML parsing interfaces, Psych -# provides at the lowest level, an event based system, mid-level is building -# a YAML AST, and the highest level is converting a Ruby object straight to -# a YAML document. -# -# === Low level emitting -# -# The lowest level emitter is an event based system. Events are sent to a -# Psych::Emitter object. That object knows how to convert the events to a YAML -# document. This interface should be used when document format is known in -# advance or speed is a concern. See Psych::Emitter for more information. -# -# === Mid level emitting -# -# At the mid level is building an AST. This AST is exactly the same as the AST -# used when parsing a YAML document. Users can build an AST by hand and the -# AST knows how to emit itself as a YAML document. See Psych::Nodes, -# Psych::Nodes::Node, and Psych::TreeBuilder for more information on building -# a YAML AST. -# -# === High level emitting -# -# The high level emitter has the easiest interface. Psych simply takes a Ruby -# data structure and converts it to a YAML document. See Psych.dump for more -# information on dumping a Ruby data structure. - -module Psych - # The version is Psych you're using - VERSION = '1.0.0' - - # The version of libyaml Psych is using - LIBYAML_VERSION = Psych.libyaml_version.join '.' - - ### - # Load +yaml+ in to a Ruby data structure. If multiple documents are - # provided, the object contained in the first document will be returned. - # - # Example: - # - # Psych.load("--- a") # => 'a' - # Psych.load("---\n - a\n - b") # => ['a', 'b'] - def self.load yaml - result = parse(yaml) - result ? result.to_ruby : result - end - - ### - # Parse a YAML string in +yaml+. Returns the first object of a YAML AST. - # - # Example: - # - # Psych.parse("---\n - a\n - b") # => #<Psych::Nodes::Sequence:0x00> - # - # See Psych::Nodes for more information about YAML AST. - def self.parse yaml - children = parse_stream(yaml).children - children.empty? ? false : children.first.children.first - end - - ### - # Parse a file at +filename+. Returns the YAML AST. - def self.parse_file filename - File.open filename do |f| - parse f - end - end - - ### - # Returns a default parser - def self.parser - Psych::Parser.new(TreeBuilder.new) - end - - ### - # Parse a YAML string in +yaml+. Returns the full AST for the YAML document. - # This method can handle multiple YAML documents contained in +yaml+. - # - # Example: - # - # Psych.parse_stream("---\n - a\n - b") # => #<Psych::Nodes::Stream:0x00> - # - # See Psych::Nodes for more information about YAML AST. - def self.parse_stream yaml - parser = self.parser - parser.parse yaml - parser.handler.root - end - - ### - # Dump Ruby object +o+ to a YAML string using +options+. - # - # Example: - # - # Psych.dump(['a', 'b']) # => "---\n- a\n- b\n" - def self.dump o, options = {} - visitor = Psych::Visitors::YAMLTree.new options - visitor << o - visitor.tree.to_yaml - end - - ### - # Dump a list of objects as separate documents to a document stream. - # - # Example: - # - # Psych.dump_stream("foo\n ", {}) # => "--- ! \"foo\\n \"\n--- {}\n" - def self.dump_stream *objects - visitor = Psych::Visitors::YAMLTree.new {} - objects.each do |o| - visitor << o - end - visitor.tree.to_yaml - end - - ### - # Dump Ruby object +o+ to a JSON string. - def self.to_json o - visitor = Psych::Visitors::JSONTree.new(:json => true) - visitor << o - visitor.tree.to_yaml - end - - ### - # Load multiple documents given in +yaml+. Returns the parsed documents - # as a list. For example: - # - # Psych.load_documents("--- foo\n...\n--- bar\n...") # => ['foo', 'bar'] - # - def self.load_stream yaml - parse_stream(yaml).children.map { |child| child.to_ruby } - end - - def self.load_documents yaml, &block - if $VERBOSE - warn "#{caller[0]}: load_documents is deprecated, use load_stream" - end - list = load_stream yaml - return list unless block_given? - list.each(&block) - end - - ### - # Load the document contained in +filename+. Returns the yaml contained in - # +filename+ as a ruby object - def self.load_file filename - self.load File.open(filename) - end - - # :stopdoc: - @domain_types = {} - def self.add_domain_type domain, type_tag, &block - @domain_types[type_tag] = ["http://#{domain}", block] - end - - def self.add_builtin_type type_tag, &block - @domain_types[type_tag] = ['yaml.org', block] - end - - def self.remove_type type_tag - @domain_types.delete type_tag - end - - @load_tags = {} - @dump_tags = {} - def self.add_tag tag, klass - @load_tags[tag] = klass - @dump_tags[klass] = tag - end - - class << self - attr_accessor :load_tags - attr_accessor :dump_tags - attr_accessor :domain_types - end - - # :startdoc: -end diff --git a/lib/psych/coder.rb b/lib/psych/coder.rb deleted file mode 100644 index 79e46dab1b..0000000000 --- a/lib/psych/coder.rb +++ /dev/null @@ -1,68 +0,0 @@ -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 - attr_reader :type, :map, :scalar, :seq - - def initialize tag - @map = {} - @seq = [] - @implicit = false - @type = :map - @tag = tag - @style = Psych::Nodes::Mapping::BLOCK - @scalar = nil - 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 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 - - def [] k - @type = :map - @map[k] - end - - # Emit a sequence of +list+ - def seq= list - @type = :seq - @seq = list - end - end -end diff --git a/lib/psych/core_ext.rb b/lib/psych/core_ext.rb deleted file mode 100644 index bd22219c07..0000000000 --- a/lib/psych/core_ext.rb +++ /dev/null @@ -1,22 +0,0 @@ -class Object - def self.yaml_tag url - Psych.add_tag(url, self) - end - - # FIXME: rename this to "to_yaml" when syck is removed - - ### - # call-seq: to_yaml - # - # Convert an object to YAML - def psych_to_yaml options = {} - Psych.dump self, options - end - alias :to_yaml :psych_to_yaml -end - -module Kernel - def y *objects - puts Psych.dump_stream(*objects) - end -end diff --git a/lib/psych/emitter.rb b/lib/psych/emitter.rb deleted file mode 100644 index b06ad3ac49..0000000000 --- a/lib/psych/emitter.rb +++ /dev/null @@ -1,4 +0,0 @@ -module Psych - class Emitter < Psych::Handler - end -end diff --git a/lib/psych/handler.rb b/lib/psych/handler.rb deleted file mode 100644 index bfc62d701f..0000000000 --- a/lib/psych/handler.rb +++ /dev/null @@ -1,215 +0,0 @@ -module Psych - ### - # Psych::Handler is an abstract base class that defines the events used - # when dealing with Psych::Parser. Clients who want to use Psych::Parser - # should implement a class that inherits from Psych::Handler and define - # events that they can handle. - # - # Psych::Handler defines all events that Psych::Parser can possibly send to - # event handlers. - # - # See Psych::Parser for more details - class Handler - ### - # Called with +encoding+ when the YAML stream starts. This method is - # called once per stream. A stream may contain multiple documents. - # - # See the constants in Psych::Parser for the possible values of +encoding+. - def start_stream encoding - end - - ### - # Called when the document starts with the declared +version+, - # +tag_directives+, if the document is +implicit+. - # - # +version+ will be an array of integers indicating the YAML version being - # dealt with, +tag_directives+ is a list of tuples indicating the prefix - # and suffix of each tag, and +implicit+ is a boolean indicating whether - # the document is started implicitly. - # - # === Example - # - # Given the following YAML: - # - # %YAML 1.1 - # %TAG ! tag:tenderlovemaking.com,2009: - # --- !squee - # - # The parameters for start_document must be this: - # - # version # => [1, 1] - # tag_directives # => [["!", "tag:tenderlovemaking.com,2009:"]] - # implicit # => false - def start_document version, tag_directives, implicit - end - - ### - # Called with the document ends. +implicit+ is a boolean value indicating - # whether or not the document has an implicit ending. - # - # === Example - # - # Given the following YAML: - # - # --- - # hello world - # - # +implicit+ will be true. Given this YAML: - # - # --- - # hello world - # ... - # - # +implicit+ will be false. - def end_document implicit - end - - ### - # Called when an alias is found to +anchor+. +anchor+ will be the name - # of the anchor found. - # - # === Example - # - # Here we have an example of an array that references itself in YAML: - # - # --- &ponies - # - first element - # - *ponies - # - # &ponies is the achor, *ponies is the alias. In this case, alias is - # called with "ponies". - def alias anchor - end - - ### - # Called when a scalar +value+ is found. The scalar may have an - # +anchor+, a +tag+, be implicitly +plain+ or implicitly +quoted+ - # - # +value+ is the string value of the scalar - # +anchor+ is an associated anchor or nil - # +tag+ is an associated tag or nil - # +plain+ is a boolean value - # +quoted+ is a boolean value - # +style+ is an integer idicating the string style - # - # See the constants in Psych::Nodes::Scalar for the possible values of - # +style+ - # - # === Example - # - # Here is a YAML document that exercises most of the possible ways this - # method can be called: - # - # --- - # - !str "foo" - # - &anchor fun - # - many - # lines - # - | - # many - # newlines - # - # The above YAML document contains a list with four strings. Here are - # the parameters sent to this method in the same order: - # - # # value anchor tag plain quoted style - # ["foo", nil, "!str", false, false, 3 ] - # ["fun", "anchor", nil, true, false, 1 ] - # ["many lines", nil, nil, true, false, 1 ] - # ["many\nnewlines\n", nil, nil, false, true, 4 ] - # - def scalar value, anchor, tag, plain, quoted, style - end - - ### - # Called when a sequence is started. - # - # +anchor+ is the anchor associated with the sequence or nil. - # +tag+ is the tag associated with the sequence or nil. - # +implicit+ a boolean indicating whether or not the sequence was implicitly - # started. - # +style+ is an integer indicating the list style. - # - # See the constants in Psych::Nodes::Sequence for the possible values of - # +style+. - # - # === Example - # - # Here is a YAML document that exercises most of the possible ways this - # method can be called: - # - # --- - # - !!seq [ - # a - # ] - # - &pewpew - # - b - # - # The above YAML document consists of three lists, an outer list that - # contains two inner lists. Here is a matrix of the parameters sent - # to represent these lists: - # - # # anchor tag implicit style - # [nil, nil, true, 1 ] - # [nil, "tag:yaml.org,2002:seq", false, 2 ] - # ["pewpew", nil, true, 1 ] - - def start_sequence anchor, tag, implicit, style - end - - ### - # Called when a sequence ends. - def end_sequence - end - - ### - # Called when a map starts. - # - # +anchor+ is the anchor associated with the map or +nil+. - # +tag+ is the tag associated with the map or +nil+. - # +implicit+ is a boolean indicating whether or not the map was implicitly - # started. - # +style+ is an integer indicating the mapping style. - # - # See the constants in Psych::Nodes::Mapping for the possible values of - # +style+. - # - # === Example - # - # Here is a YAML document that exercises most of the possible ways this - # method can be called: - # - # --- - # k: !!map { hello: world } - # v: &pewpew - # hello: world - # - # The above YAML document consists of three maps, an outer map that contains - # two inner maps. Below is a matrix of the parameters sent in order to - # represent these three maps: - # - # # anchor tag implicit style - # [nil, nil, true, 1 ] - # [nil, "tag:yaml.org,2002:map", false, 2 ] - # ["pewpew", nil, true, 1 ] - - def start_mapping anchor, tag, implicit, style - end - - ### - # Called when a map ends - def end_mapping - end - - ### - # Called when an empty event happens. (Which, as far as I can tell, is - # never). - def empty - end - - ### - # Called when the YAML stream ends - def end_stream - end - end -end diff --git a/lib/psych/nodes.rb b/lib/psych/nodes.rb deleted file mode 100644 index 9e5946daa9..0000000000 --- a/lib/psych/nodes.rb +++ /dev/null @@ -1,77 +0,0 @@ -require 'psych/nodes/node' -require 'psych/nodes/stream' -require 'psych/nodes/document' -require 'psych/nodes/sequence' -require 'psych/nodes/scalar' -require 'psych/nodes/mapping' -require 'psych/nodes/alias' - -module Psych - ### - # = Overview - # - # When using Psych.load to deserialize a YAML document, the document is - # translated to an intermediary AST. That intermediary AST is then - # translated in to a Ruby object graph. - # - # In the opposite direction, when using Psych.dump, the Ruby object graph is - # translated to an intermediary AST which is then converted to a YAML - # document. - # - # Psych::Nodes contains all of the classes that make up the nodes of a YAML - # AST. You can manually build an AST and use one of the visitors (see - # Psych::Visitors) to convert that AST to either a YAML document or to a - # Ruby object graph. - # - # Here is an example of building an AST that represents a list with one - # scalar: - # - # # Create our nodes - # stream = Psych::Nodes::Stream.new - # doc = Psych::Nodes::Document.new - # seq = Psych::Nodes::Sequence.new - # scalar = Psych::Nodes::Scalar.new('foo') - # - # # Build up our tree - # stream.children << doc - # doc.children << seq - # seq.children << scalar - # - # The stream is the root of the tree. We can then convert the tree to YAML: - # - # stream.to_yaml => "---\n- foo\n" - # - # Or convert it to Ruby: - # - # stream.to_ruby => [["foo"]] - # - # == YAML AST Requirements - # - # A valid YAML AST *must* have one Psych::Nodes::Stream at the root. A - # Psych::Nodes::Stream node must have 1 or more Psych::Nodes::Document nodes - # as children. - # - # Psych::Nodes::Document nodes must have one and *only* one child. That child - # may be one of: - # - # * Psych::Nodes::Sequence - # * Psych::Nodes::Mapping - # * Psych::Nodes::Scalar - # - # Psych::Nodes::Sequence and Psych::Nodes::Mapping nodes may have many - # children, but Psych::Nodes::Mapping nodes should have an even number of - # children. - # - # All of these are valid children for Psych::Nodes::Sequence and - # Psych::Nodes::Mapping nodes: - # - # * Psych::Nodes::Sequence - # * Psych::Nodes::Mapping - # * Psych::Nodes::Scalar - # * Psych::Nodes::Alias - # - # Psych::Nodes::Scalar and Psych::Nodes::Alias are both terminal nodes and - # should not have any children. - module Nodes - end -end diff --git a/lib/psych/nodes/alias.rb b/lib/psych/nodes/alias.rb deleted file mode 100644 index 5bd4df13d1..0000000000 --- a/lib/psych/nodes/alias.rb +++ /dev/null @@ -1,18 +0,0 @@ -module Psych - module Nodes - ### - # This class represents a {YAML Alias}[http://yaml.org/spec/1.1/#alias]. - # It points to an +anchor+. - # - # A Psych::Nodes::Alias is a terminal node and may have no children. - class Alias < Psych::Nodes::Node - # The anchor this alias links to - attr_accessor :anchor - - # Create a new Alias that points to an +anchor+ - def initialize anchor - @anchor = anchor - end - end - end -end diff --git a/lib/psych/nodes/document.rb b/lib/psych/nodes/document.rb deleted file mode 100644 index 32014d60dc..0000000000 --- a/lib/psych/nodes/document.rb +++ /dev/null @@ -1,60 +0,0 @@ -module Psych - module Nodes - ### - # This represents a YAML Document. This node must be a child of - # Psych::Nodes::Stream. A Psych::Nodes::Document must have one child, - # and that child may be one of the following: - # - # * Psych::Nodes::Sequence - # * Psych::Nodes::Mapping - # * Psych::Nodes::Scalar - class Document < Psych::Nodes::Node - # The version of the YAML document - attr_accessor :version - - # A list of tag directives for this document - attr_accessor :tag_directives - - # Was this document implicitly created? - attr_accessor :implicit - - # Is the end of the document implicit? - attr_accessor :implicit_end - - ### - # Create a new Psych::Nodes::Document object. - # - # +version+ is a list indicating the YAML version. - # +tags_directives+ is a list of tag directive declarations - # +implicit+ is a flag indicating whether the document will be implicitly - # started. - # - # == Example: - # This creates a YAML document object that represents a YAML 1.1 document - # with one tag directive, and has an implicit start: - # - # Psych::Nodes::Document.new( - # [1,1], - # [["!", "tag:tenderlovemaking.com,2009:"]], - # true - # ) - # - # == See Also - # See also Psych::Handler#start_document - def initialize version = [], tag_directives = [], implicit = false - super() - @version = version - @tag_directives = tag_directives - @implicit = implicit - @implicit_end = true - end - - ### - # Returns the root node. A Document may only have one root node: - # http://yaml.org/spec/1.1/#id898031 - def root - children.first - end - end - end -end diff --git a/lib/psych/nodes/mapping.rb b/lib/psych/nodes/mapping.rb deleted file mode 100644 index 5ba95ce4b6..0000000000 --- a/lib/psych/nodes/mapping.rb +++ /dev/null @@ -1,56 +0,0 @@ -module Psych - module Nodes - ### - # This class represents a {YAML Mapping}[http://yaml.org/spec/1.1/#mapping]. - # - # A Psych::Nodes::Mapping node may have 0 or more children, but must have - # an even number of children. Here are the valid children a - # Psych::Nodes::Mapping node may have: - # - # * Psych::Nodes::Sequence - # * Psych::Nodes::Mapping - # * Psych::Nodes::Scalar - # * Psych::Nodes::Alias - class Mapping < Psych::Nodes::Node - # Any Map Style - ANY = 0 - - # Block Map Style - BLOCK = 1 - - # Flow Map Style - FLOW = 2 - - # The optional anchor for this mapping - attr_accessor :anchor - - # The optional tag for this mapping - attr_accessor :tag - - # Is this an implicit mapping? - attr_accessor :implicit - - # The style of this mapping - attr_accessor :style - - ### - # Create a new Psych::Nodes::Mapping object. - # - # +anchor+ is the anchor associated with the map or +nil+. - # +tag+ is the tag associated with the map or +nil+. - # +implicit+ is a boolean indicating whether or not the map was implicitly - # started. - # +style+ is an integer indicating the mapping style. - # - # == See Also - # See also Psych::Handler#start_mapping - def initialize anchor = nil, tag = nil, implicit = true, style = BLOCK - super() - @anchor = anchor - @tag = tag - @implicit = implicit - @style = style - end - end - end -end diff --git a/lib/psych/nodes/node.rb b/lib/psych/nodes/node.rb deleted file mode 100644 index 0de768c7ac..0000000000 --- a/lib/psych/nodes/node.rb +++ /dev/null @@ -1,40 +0,0 @@ -require 'stringio' - -module Psych - module Nodes - ### - # The base class for any Node in a YAML parse tree. This class should - # never be instantiated. - class Node - # The children of this node - attr_reader :children - - # An associated tag - attr_reader :tag - - # Create a new Psych::Nodes::Node - def initialize - @children = [] - end - - ### - # Convert this node to Ruby. - # - # See also Psych::Visitors::ToRuby - def to_ruby - Visitors::ToRuby.new.accept self - end - alias :transform :to_ruby - - ### - # Convert this node to YAML. - # - # See also Psych::Visitors::Emitter - def to_yaml - io = StringIO.new - Visitors::Emitter.new(io).accept self - io.string - end - end - end -end diff --git a/lib/psych/nodes/scalar.rb b/lib/psych/nodes/scalar.rb deleted file mode 100644 index 1b1b25b98a..0000000000 --- a/lib/psych/nodes/scalar.rb +++ /dev/null @@ -1,67 +0,0 @@ -module Psych - module Nodes - ### - # This class represents a {YAML Scalar}[http://yaml.org/spec/1.1/#id858081]. - # - # This node type is a terminal node and should not have any children. - class Scalar < Psych::Nodes::Node - # Any style scalar, the emitter chooses - ANY = 0 - - # Plain scalar style - PLAIN = 1 - - # Single quoted style - SINGLE_QUOTED = 2 - - # Double quoted style - DOUBLE_QUOTED = 3 - - # Literal style - LITERAL = 4 - - # Folded style - FOLDED = 5 - - # The scalar value - attr_accessor :value - - # The anchor value (if there is one) - attr_accessor :anchor - - # The tag value (if there is one) - attr_accessor :tag - - # Is this a plain scalar? - attr_accessor :plain - - # Is this scalar quoted? - attr_accessor :quoted - - # The style of this scalar - attr_accessor :style - - ### - # Create a new Psych::Nodes::Scalar object. - # - # +value+ is the string value of the scalar - # +anchor+ is an associated anchor or nil - # +tag+ is an associated tag or nil - # +plain+ is a boolean value - # +quoted+ is a boolean value - # +style+ is an integer idicating the string style - # - # == See Also - # - # See also Psych::Handler#scalar - def initialize value, anchor = nil, tag = nil, plain = true, quoted = false, style = ANY - @value = value - @anchor = anchor - @tag = tag - @plain = plain - @quoted = quoted - @style = style - end - end - end -end diff --git a/lib/psych/nodes/sequence.rb b/lib/psych/nodes/sequence.rb deleted file mode 100644 index e4b833d330..0000000000 --- a/lib/psych/nodes/sequence.rb +++ /dev/null @@ -1,81 +0,0 @@ -module Psych - module Nodes - ### - # This class represents a - # {YAML sequence}[http://yaml.org/spec/1.1/#sequence/syntax]. - # - # A YAML sequence is basically a list, and looks like this: - # - # %YAML 1.1 - # --- - # - I am - # - a Sequence - # - # A YAML sequence may have an anchor like this: - # - # %YAML 1.1 - # --- - # &A [ - # "This sequence", - # "has an anchor" - # ] - # - # A YAML sequence may also have a tag like this: - # - # %YAML 1.1 - # --- - # !!seq [ - # "This sequence", - # "has a tag" - # ] - # - # This class represents a sequence in a YAML document. A - # Psych::Nodes::Sequence node may have 0 or more children. Valid children - # for this node are: - # - # * Psych::Nodes::Sequence - # * Psych::Nodes::Mapping - # * Psych::Nodes::Scalar - # * Psych::Nodes::Alias - class Sequence < Psych::Nodes::Node - # Any Styles, emitter chooses - ANY = 0 - - # Block style sequence - BLOCK = 1 - - # Flow style sequence - FLOW = 2 - - # The anchor for this sequence (if any) - attr_accessor :anchor - - # The tag name for this sequence (if any) - attr_accessor :tag - - # Is this sequence started implicitly? - attr_accessor :implicit - - # The sequece style used - attr_accessor :style - - ### - # Create a new object representing a YAML sequence. - # - # +anchor+ is the anchor associated with the sequence or nil. - # +tag+ is the tag associated with the sequence or nil. - # +implicit+ a boolean indicating whether or not the sequence was - # implicitly started. - # +style+ is an integer indicating the list style. - # - # See Psych::Handler#start_sequence - def initialize anchor = nil, tag = nil, implicit = true, style = BLOCK - super() - @anchor = anchor - @tag = tag - @implicit = implicit - @style = style - end - end - end -end diff --git a/lib/psych/nodes/stream.rb b/lib/psych/nodes/stream.rb deleted file mode 100644 index f4aab5a7dc..0000000000 --- a/lib/psych/nodes/stream.rb +++ /dev/null @@ -1,37 +0,0 @@ -module Psych - module Nodes - ### - # Represents a YAML stream. This is the root node for any YAML parse - # tree. This node must have one or more child nodes. The only valid - # child node for a Psych::Nodes::Stream node is Psych::Nodes::Document. - class Stream < Psych::Nodes::Node - - # Encodings supported by Psych (and libyaml) - - # Any encoding - ANY = Psych::Parser::ANY - - # UTF-8 encoding - UTF8 = Psych::Parser::UTF8 - - # UTF-16LE encoding - UTF16LE = Psych::Parser::UTF16LE - - # UTF-16BE encoding - UTF16BE = Psych::Parser::UTF16BE - - # The encoding used for this stream - attr_reader :encoding - - ### - # Create a new Psych::Nodes::Stream node with an +encoding+ that - # defaults to Psych::Nodes::Stream::UTF8. - # - # See also Psych::Handler#start_stream - def initialize encoding = UTF8 - super() - @encoding = encoding - end - end - end -end diff --git a/lib/psych/omap.rb b/lib/psych/omap.rb deleted file mode 100644 index 6286270616..0000000000 --- a/lib/psych/omap.rb +++ /dev/null @@ -1,4 +0,0 @@ -module Psych - class Omap < ::Hash - end -end diff --git a/lib/psych/parser.rb b/lib/psych/parser.rb deleted file mode 100644 index 0e38a4ae7d..0000000000 --- a/lib/psych/parser.rb +++ /dev/null @@ -1,44 +0,0 @@ -module Psych - ### - # YAML event parser class. This class parses a YAML document and calls - # events on the handler that is passed to the constructor. The events can - # be used for things such as constructing a YAML AST or deserializing YAML - # documents. It can even be fed back to Psych::Emitter to emit the same - # document that was parsed. - # - # See Psych::Handler for documentation on the events that Psych::Parser emits. - # - # Here is an example that prints out ever scalar found in a YAML document: - # - # # Handler for detecting scalar values - # class ScalarHandler < Psych::Handler - # def scalar value, anchor, tag, plain, quoted, style - # puts value - # end - # end - # - # parser = Psych::Parser.new(ScalarHandler.new) - # parser.parse(yaml_document) - # - # Here is an example that feeds the parser back in to Psych::Emitter. The - # YAML document is read from STDIN and written back out to STDERR: - # - # parser = Psych::Parser.new(Psych::Emitter.new($stderr)) - # parser.parse($stdin) - # - # Psych uses Psych::Parser in combination with Psych::TreeBuilder to - # construct an AST of the parsed YAML document. - - class Parser - # The handler on which events will be called - attr_accessor :handler - - ### - # Creates a new Psych::Parser instance with +handler+. YAML events will - # be called on +handler+. See Psych::Parser for more details. - - def initialize handler = Handler.new - @handler = handler - end - end -end diff --git a/lib/psych/scalar_scanner.rb b/lib/psych/scalar_scanner.rb deleted file mode 100644 index bee88de419..0000000000 --- a/lib/psych/scalar_scanner.rb +++ /dev/null @@ -1,90 +0,0 @@ -require 'strscan' - -module Psych - ### - # Scan scalars for built in types - class ScalarScanner - # Taken from http://yaml.org/type/timestamp.html - TIME = /^\d{4}-\d{1,2}-\d{1,2}([Tt]|\s+)\d{1,2}:\d\d:\d\d(\.\d*)?(\s*Z|[-+]\d{1,2}(:\d\d)?)?/ - - # Create a new scanner - def initialize - @string_cache = {} - end - - # Tokenize +string+ returning the ruby object - def tokenize string - return nil if string.empty? - return string if @string_cache.key?(string) - - case string - when /^[A-Za-z~]/ - if string.length > 5 - @string_cache[string] = true - return string - end - - case string - when /^[^ytonf~]/i - @string_cache[string] = true - string - when '~', /^null$/i - nil - when /^(yes|true|on)$/i - true - when /^(no|false|off)$/i - false - else - @string_cache[string] = true - string - end - when TIME - date, time = *(string.split(/[ tT]/, 2)) - (yy, m, dd) = date.split('-').map { |x| x.to_i } - md = time.match(/(\d+:\d+:\d+)(\.\d*)?\s*(Z|[-+]\d+(:\d\d)?)?/) - - (hh, mm, ss) = md[1].split(':').map { |x| x.to_i } - us = (md[2] ? Rational(md[2].sub(/^\./, '0.')) : 0) * 1000000 - - time = Time.utc(yy, m, dd, hh, mm, ss, us) - - return time if 'Z' == md[3] - - tz = md[3] ? Integer(md[3].split(':').first.sub(/([-+])0/, '\1')) : 0 - Time.at((time - (tz * 3600)).to_i, us) - when /^\d{4}-\d{1,2}-\d{1,2}$/ - require 'date' - Date.strptime(string, '%Y-%m-%d') - when /^\.inf$/i - 1 / 0.0 - when /^-\.inf$/i - -1 / 0.0 - when /^\.nan$/i - 0.0 / 0.0 - when /^:./ - if string =~ /^:(["'])(.*)\1/ - $2.sub(/^:/, '').to_sym - else - string.sub(/^:/, '').to_sym - end - when /^[-+]?[1-9][0-9_]*(:[0-5]?[0-9])+$/ - i = 0 - string.split(':').each_with_index do |n,e| - i += (n.to_i * 60 ** (e - 2).abs) - end - i - when /^[-+]?[0-9][0-9_]*(:[0-5]?[0-9])+\.[0-9_]*$/ - i = 0 - string.split(':').each_with_index do |n,e| - i += (n.to_f * 60 ** (e - 2).abs) - end - i - else - return Integer(string.gsub(/[,_]/, '')) rescue ArgumentError - return Float(string.gsub(/[,_]/, '')) rescue ArgumentError - @string_cache[string] = true - string - end - end - end -end diff --git a/lib/psych/set.rb b/lib/psych/set.rb deleted file mode 100644 index 6793a8ed1b..0000000000 --- a/lib/psych/set.rb +++ /dev/null @@ -1,4 +0,0 @@ -module Psych - class Set < ::Hash - end -end diff --git a/lib/psych/tree_builder.rb b/lib/psych/tree_builder.rb deleted file mode 100644 index 2b16290b8f..0000000000 --- a/lib/psych/tree_builder.rb +++ /dev/null @@ -1,89 +0,0 @@ -require 'psych/handler' - -module Psych - ### - # This class works in conjunction with Psych::Parser to build an in-memory - # parse tree that represents a YAML document. - # - # == Example - # - # parser = Psych::Parser.new Psych::TreeBuilder.new - # parser.parse('--- foo') - # tree = parser.handler.root - # - # See Psych::Handler for documentation on the event methods used in this - # class. - class TreeBuilder < Psych::Handler - # Create a new TreeBuilder instance - def initialize - @stack = [] - @last = nil - end - - # Returns the root node for the built tree - def root - @stack.first - end - - %w{ - Sequence - Mapping - }.each do |node| - class_eval %{ - def start_#{node.downcase}(anchor, tag, implicit, style) - n = Nodes::#{node}.new(anchor, tag, implicit, style) - @last.children << n - push n - end - - def end_#{node.downcase} - pop - end - } - end - - ### - # Handles start_document events with +version+, +tag_directives+, - # and +implicit+ styling. - # - # See Psych::Handler#start_document - def start_document version, tag_directives, implicit - n = Nodes::Document.new(version, tag_directives, implicit) - @last.children << n - push n - end - - ### - # Handles end_document events with +version+, +tag_directives+, - # and +implicit+ styling. - # - # See Psych::Handler#start_document - def end_document implicit_end - @last.implicit_end = implicit_end - pop - end - - def start_stream encoding - push Nodes::Stream.new(encoding) - end - - def scalar value, anchor, tag, plain, quoted, style - @last.children << Nodes::Scalar.new(value,anchor,tag,plain,quoted,style) - end - - def alias anchor - @last.children << Nodes::Alias.new(anchor) - end - - private - def push value - @stack.push value - @last = value - end - - def pop - @stack.pop - @last = @stack.last - end - end -end diff --git a/lib/psych/visitors.rb b/lib/psych/visitors.rb deleted file mode 100644 index 10ac4ce270..0000000000 --- a/lib/psych/visitors.rb +++ /dev/null @@ -1,5 +0,0 @@ -require 'psych/visitors/visitor' -require 'psych/visitors/to_ruby' -require 'psych/visitors/emitter' -require 'psych/visitors/yaml_tree' -require 'psych/visitors/json_tree' diff --git a/lib/psych/visitors/emitter.rb b/lib/psych/visitors/emitter.rb deleted file mode 100644 index 0768fbb528..0000000000 --- a/lib/psych/visitors/emitter.rb +++ /dev/null @@ -1,41 +0,0 @@ -module Psych - module Visitors - class Emitter < Psych::Visitors::Visitor - def initialize io - @handler = Psych::Emitter.new io - end - - def visit_Psych_Nodes_Stream o - @handler.start_stream o.encoding - o.children.each { |c| accept c } - @handler.end_stream - end - - def visit_Psych_Nodes_Document o - @handler.start_document o.version, o.tag_directives, o.implicit - o.children.each { |c| accept c } - @handler.end_document o.implicit_end - end - - def visit_Psych_Nodes_Scalar o - @handler.scalar o.value, o.anchor, o.tag, o.plain, o.quoted, o.style - end - - def visit_Psych_Nodes_Sequence o - @handler.start_sequence o.anchor, o.tag, o.implicit, o.style - o.children.each { |c| accept c } - @handler.end_sequence - end - - def visit_Psych_Nodes_Mapping o - @handler.start_mapping o.anchor, o.tag, o.implicit, o.style - o.children.each { |c| accept c } - @handler.end_mapping - end - - def visit_Psych_Nodes_Alias o - @handler.alias o.anchor - end - end - end -end diff --git a/lib/psych/visitors/json_tree.rb b/lib/psych/visitors/json_tree.rb deleted file mode 100644 index 0440dc778d..0000000000 --- a/lib/psych/visitors/json_tree.rb +++ /dev/null @@ -1,37 +0,0 @@ -module Psych - module Visitors - class JSONTree < YAMLTree - def visit_Symbol o - append create_scalar o.to_s - end - - def visit_NilClass o - scalar = Nodes::Scalar.new( - 'null', nil, nil, true, false, Nodes::Scalar::PLAIN) - append scalar - end - - private - def create_document - doc = super - doc.implicit = true - doc.implicit_end = true - doc - end - - def create_mapping - map = super - map.style = Nodes::Mapping::FLOW - map - end - - def create_scalar value, anchor = nil, tag = nil, plain = false, quoted = true, style = Nodes::Scalar::ANY - super(value, anchor, tag, false, true, style) - end - - def create_sequence anchor = nil, tag = nil, implicit = true, style = Nodes::Sequence::FLOW - super - end - end - end -end diff --git a/lib/psych/visitors/to_ruby.rb b/lib/psych/visitors/to_ruby.rb deleted file mode 100644 index 2790cdeb3d..0000000000 --- a/lib/psych/visitors/to_ruby.rb +++ /dev/null @@ -1,252 +0,0 @@ -require 'psych/scalar_scanner' - -module Psych - module Visitors - ### - # This class walks a YAML AST, converting each node to ruby - class ToRuby < Psych::Visitors::Visitor - def initialize - super - @st = {} - @ss = ScalarScanner.new - @domain_types = Psych.domain_types - end - - def accept target - result = super - return result if @domain_types.empty? || !target.tag - - short_name = target.tag.sub(/^!/, '').split('/', 2).last - if Psych.domain_types.key? short_name - url, block = Psych.domain_types[short_name] - return block.call "#{url}:#{short_name}", result - end - - result - end - - def visit_Psych_Nodes_Scalar o - @st[o.anchor] = o.value if o.anchor - - if klass = Psych.load_tags[o.tag] - instance = klass.allocate - - if instance.respond_to?(:init_with) - coder = Psych::Coder.new(o.tag) - coder.scalar = o.value - instance.init_with coder - end - - return instance - end - - return o.value if o.quoted - return @ss.tokenize(o.value) unless o.tag - - case o.tag - when '!binary', 'tag:yaml.org,2002:binary' - o.value.unpack('m').first - when '!str', 'tag:yaml.org,2002:str' - o.value - when "!ruby/object:Complex" - Complex(o.value) - when "!ruby/object:Rational" - Rational(o.value) - when "tag:yaml.org,2002:float", "!float" - Float(@ss.tokenize(o.value)) - when "!ruby/regexp" - o.value =~ /^\/(.*)\/([mix]*)$/ - source = $1 - options = 0 - lang = nil - ($2 || '').split('').each do |option| - case option - when 'x' then options |= Regexp::EXTENDED - when 'i' then options |= Regexp::IGNORECASE - when 'm' then options |= Regexp::MULTILINE - else lang = option - end - end - Regexp.new(*[source, options, lang].compact) - when "!ruby/range" - args = o.value.split(/([.]{2,3})/, 2).map { |s| - accept Nodes::Scalar.new(s) - } - args.push(args.delete_at(1) == '...') - Range.new(*args) - when /^!ruby\/sym(bol)?:?(.*)?$/ - o.value.to_sym - else - @ss.tokenize o.value - end - end - - 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 = Psych::Omap.new - @st[o.anchor] = map if o.anchor - o.children.each { |a| - map[accept(a.children.first)] = accept a.children.last - } - map - else - list = [] - @st[o.anchor] = list if o.anchor - o.children.each { |c| list.push accept c } - list - end - end - - def visit_Psych_Nodes_Mapping o - return revive(Psych.load_tags[o.tag], o) if Psych.load_tags[o.tag] - - case o.tag - when '!str', 'tag:yaml.org,2002:str' - members = Hash[*o.children.map { |c| accept c }] - string = members.delete 'str' - init_with(string, members.map { |k,v| [k.to_s.sub(/^@/, ''),v] }, o) - when /^!ruby\/struct:?(.*)?$/ - klass = resolve_class($1) - - if klass - s = klass.allocate - @st[o.anchor] = s if o.anchor - - members = {} - struct_members = s.members.map { |x| x.to_sym } - o.children.each_slice(2) do |k,v| - member = accept(k) - value = accept(v) - if struct_members.include?(member.to_sym) - s.send("#{member}=", value) - else - members[member.to_s.sub(/^@/, '')] = value - end - end - init_with(s, members, o) - else - members = o.children.map { |c| accept c } - h = Hash[*members] - Struct.new(*h.map { |k,v| k.to_sym }).new(*h.map { |k,v| v }) - end - - when '!ruby/range' - h = Hash[*o.children.map { |c| accept c }] - Range.new(h['begin'], h['end'], h['excl']) - - when /^!ruby\/exception:?(.*)?$/ - h = Hash[*o.children.map { |c| accept c }] - - e = build_exception((resolve_class($1) || Exception), - h.delete('message')) - init_with(e, h, o) - - when '!set', 'tag:yaml.org,2002:set' - set = Psych::Set.new - @st[o.anchor] = set if o.anchor - o.children.each_slice(2) do |k,v| - set[accept(k)] = accept(v) - end - set - - when '!ruby/object:Complex' - h = Hash[*o.children.map { |c| accept c }] - Complex(h['real'], h['image']) - - when '!ruby/object:Rational' - h = Hash[*o.children.map { |c| accept c }] - Rational(h['numerator'], h['denominator']) - - when /^!ruby\/object:?(.*)?$/ - name = $1 || 'Object' - obj = revive((resolve_class(name) || Object), o) - @st[o.anchor] = obj if o.anchor - obj - else - hash = {} - @st[o.anchor] = hash if o.anchor - - o.children.each_slice(2) { |k,v| - key = accept(k) - - if key == '<<' && Nodes::Alias === v - # FIXME: remove this when "<<" syntax is deprecated - if $VERBOSE - where = caller.find { |x| x !~ /psych/ } - warn where - warn "\"<<: *#{v.anchor}\" is no longer supported, please switch to \"*#{v.anchor}\"" - end - return accept(v) - else - hash[key] = accept(v) - end - - } - hash - end - end - - def visit_Psych_Nodes_Document o - accept o.root - end - - def visit_Psych_Nodes_Stream o - o.children.map { |c| accept c } - end - - def visit_Psych_Nodes_Alias o - @st[o.anchor] - end - - private - def revive klass, node - s = klass.allocate - h = Hash[*node.children.map { |c| accept c }] - init_with(s, h, node) - end - - def init_with o, h, node - if o.respond_to?(:init_with) - c = Psych::Coder.new(node.tag) - c.map = h - o.init_with c - else - h.each { |k,v| o.instance_variable_set(:"@#{k}", v) } - end - o - end - - # Convert +klassname+ to a Class - def resolve_class klassname - return nil unless klassname and not klassname.empty? - - name = klassname - retried = false - - begin - path2class(name) - rescue ArgumentError => ex - name = "Struct::#{name}" - unless retried - retried = true - retry - end - raise ex - end - end - end - end -end diff --git a/lib/psych/visitors/visitor.rb b/lib/psych/visitors/visitor.rb deleted file mode 100644 index ccd8c3bd55..0000000000 --- a/lib/psych/visitors/visitor.rb +++ /dev/null @@ -1,18 +0,0 @@ -module Psych - module Visitors - class Visitor - def accept target - case target - when Psych::Nodes::Scalar then visit_Psych_Nodes_Scalar target - when Psych::Nodes::Mapping then visit_Psych_Nodes_Mapping target - when Psych::Nodes::Sequence then visit_Psych_Nodes_Sequence target - when Psych::Nodes::Alias then visit_Psych_Nodes_Alias target - when Psych::Nodes::Document then visit_Psych_Nodes_Document target - when Psych::Nodes::Stream then visit_Psych_Nodes_Stream target - else - raise "Can't handle #{target}" - end - end - end - end -end diff --git a/lib/psych/visitors/yaml_tree.rb b/lib/psych/visitors/yaml_tree.rb deleted file mode 100644 index e1e89a0d41..0000000000 --- a/lib/psych/visitors/yaml_tree.rb +++ /dev/null @@ -1,312 +0,0 @@ -module Psych - module Visitors - class YAMLTree < Psych::Visitors::Visitor - attr_reader :tree - - def initialize options = {} - super() - @json = options[:json] - @tree = Nodes::Stream.new - @stack = [] - @st = {} - @ss = ScalarScanner.new - - @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 - end - - def << object - doc = create_document - @stack << doc - @tree.children << doc - accept object - end - - def accept target - # return any aliases we find - if node = @st[target.object_id] - node.anchor = target.object_id.to_s - return append Nodes::Alias.new target.object_id.to_s - end - - if target.respond_to?(:encode_with) - dump_coder target - else - send(@dispatch_cache[target.class], target) - end - end - - def visit_Psych_Omap o - seq = Nodes::Sequence.new(nil, '!omap', false) - register(o, seq) - - @stack.push append seq - o.each { |k,v| visit_Hash k => v } - @stack.pop - end - - def visit_Object o - tag = Psych.dump_tags[o.class] - unless tag - klass = o.class == Object ? nil : o.class.name - tag = ['!ruby/object', klass].compact.join(':') - end - - map = append Nodes::Mapping.new(nil, tag, false) - register(o, map) - - @stack.push map - dump_ivars(o, map) - @stack.pop - end - - def visit_Struct o - tag = ['!ruby/struct', o.class.name].compact.join(':') - - map = register(o, Nodes::Mapping.new(nil, tag, false)) - - @stack.push append map - - o.members.each do |member| - map.children << Nodes::Scalar.new("#{member}") - accept o[member] - end - - dump_ivars(o, map) - - @stack.pop - end - - def visit_Exception o - tag = ['!ruby/exception', o.class.name].join ':' - - map = append Nodes::Mapping.new(nil, tag, false) - - @stack.push map - - { - 'message' => private_iv_get(o, 'mesg'), - 'backtrace' => private_iv_get(o, 'backtrace'), - }.each do |k,v| - next unless v - map.children << Nodes::Scalar.new(k) - accept v - end - - dump_ivars(o, map) - - @stack.pop - end - - def visit_Regexp o - append Nodes::Scalar.new(o.inspect, nil, '!ruby/regexp', false) - end - - def visit_Time o - formatted = o.strftime("%Y-%m-%d %H:%M:%S") - if o.utc? - formatted += ".%06dZ" % [o.usec] - else - formatted += ".%06d %+.2d:00" % [o.usec, o.gmt_offset / 3600] - end - - append Nodes::Scalar.new formatted - end - - def visit_Rational o - map = append Nodes::Mapping.new(nil, '!ruby/object:Rational', false) - [ - 'denominator', o.denominator.to_s, - 'numerator', o.numerator.to_s - ].each do |m| - map.children << Nodes::Scalar.new(m) - end - end - - def visit_Complex o - map = append Nodes::Mapping.new(nil, '!ruby/object:Complex', false) - - ['real', o.real.to_s, 'image', o.imag.to_s].each do |m| - map.children << Nodes::Scalar.new(m) - end - end - - def visit_Integer o - append Nodes::Scalar.new o.to_s - end - alias :visit_TrueClass :visit_Integer - alias :visit_FalseClass :visit_Integer - alias :visit_Date :visit_Integer - - def visit_Float o - if o.nan? - append Nodes::Scalar.new '.nan' - elsif o.infinite? - append Nodes::Scalar.new(o.infinite? > 0 ? '.inf' : '-.inf') - else - append Nodes::Scalar.new o.to_s - end - end - - def visit_String o - plain = false - quote = false - - if o.index("\x00") || o.count("^ -~\t\r\n").fdiv(o.length) > 0.3 - str = [o].pack('m').chomp - tag = '!binary' - else - str = o - tag = nil - quote = !(String === @ss.tokenize(o)) - plain = !quote - end - - ivars = o.respond_to?(:to_yaml_properties) ? - o.to_yaml_properties : - o.instance_variables - - scalar = create_scalar str, nil, tag, plain, quote - - if ivars.empty? - append scalar - else - mapping = append Nodes::Mapping.new(nil, '!str', false) - - mapping.children << Nodes::Scalar.new('str') - mapping.children << scalar - - @stack.push mapping - dump_ivars o, mapping - @stack.pop - end - end - - def visit_Class o - raise TypeError, "can't dump anonymous class #{o.class}" - end - - def visit_Range o - @stack.push append Nodes::Mapping.new(nil, '!ruby/range', false) - ['begin', o.begin, 'end', o.end, 'excl', o.exclude_end?].each do |m| - accept m - end - @stack.pop - end - - def visit_Hash o - @stack.push append register(o, create_mapping) - - o.each do |k,v| - accept k - accept v - end - - @stack.pop - end - - def visit_Psych_Set o - @stack.push append register(o, Nodes::Mapping.new(nil, '!set', false)) - - o.each do |k,v| - accept k - accept v - end - - @stack.pop - end - - def visit_Array o - @stack.push append register(o, create_sequence) - o.each { |c| accept c } - @stack.pop - end - - def visit_NilClass o - append Nodes::Scalar.new('', nil, 'tag:yaml.org,2002:null', false) - end - - def visit_Symbol o - append create_scalar ":#{o}" - end - - private - def append o - @stack.last.children << o - o - end - - def register target, yaml_obj - @st[target.object_id] = yaml_obj - yaml_obj - end - - def dump_coder o - tag = Psych.dump_tags[o.class] - unless tag - klass = o.class == Object ? nil : o.class.name - tag = ['!ruby/object', klass].compact.join(':') - end - - c = Psych::Coder.new(tag) - o.encode_with(c) - emit_coder c - end - - def emit_coder c - case c.type - when :scalar - append create_scalar(c.scalar, nil, c.tag, c.tag.nil?) - when :seq - @stack.push append create_sequence(nil, c.tag, c.tag.nil?) - c.seq.each do |thing| - accept thing - end - @stack.pop - when :map - map = append Nodes::Mapping.new(nil, c.tag, c.implicit, c.style) - @stack.push map - c.map.each do |k,v| - map.children << create_scalar(k) - accept v - end - @stack.pop - end - end - - def dump_ivars target, map - ivars = target.respond_to?(:to_yaml_properties) ? - target.to_yaml_properties : - target.instance_variables - - ivars.each do |iv| - map.children << create_scalar("#{iv.to_s.sub(/^@/, '')}") - accept target.instance_variable_get(iv) - end - end - - def create_document - Nodes::Document.new - end - - def create_mapping - Nodes::Mapping.new - end - - def create_scalar value, anchor = nil, tag = nil, plain = true, quoted = false, style = Nodes::Scalar::ANY - Nodes::Scalar.new(value, anchor, tag, plain, quoted, style) - end - - def create_sequence anchor = nil, tag = nil, implicit = true, style = Nodes::Sequence::BLOCK - Nodes::Sequence.new(anchor, tag, implicit, style) - end - end - end -end |