Class: YAML_LD::Representation::IRTree
- Defined in:
- vendor/bundler/ruby/3.2.0/bundler/gems/yaml-ld-3ed3ab5619d8/lib/yaml_ld/representation.rb
Overview
Note:
Rails 6.0 not compatible with Psych 4.0, which defines RestrictedYamlTree
.
Build a YAML AST with an RDF::Literal visitor
builder = Psych::Visitors::YAMLTree.new
builder << { :foo => 'bar' }
builder.tree # => #
Instance Method Summary collapse
-
#datatypes(object) ⇒ Object
Retrive the literals from an object.
-
#push(object) ⇒ Object
(also: #<<)
Add the object to be emitted.
-
#visit_RDF_Literal(o) ⇒ Object
Emit an RDF Literal.
Instance Method Details
#datatypes(object) ⇒ Object
Retrive the literals from an object
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# File 'vendor/bundler/ruby/3.2.0/bundler/gems/yaml-ld-3ed3ab5619d8/lib/yaml_ld/representation.rb', line 214 def datatypes(object) case object when Array then object.inject([]) {|memo, o| memo += datatypes(o)} when Hash then object.values.inject([]) {|memo, o| memo += datatypes(o)} when RDF::Literal then object.datatype? ? [object.datatype] : [] else [] end end |
#push(object) ⇒ Object Also known as: <<
Add the object to be emitted. If the :extended
option is set when the visitor is created, tags are added to the document.
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# File 'vendor/bundler/ruby/3.2.0/bundler/gems/yaml-ld-3ed3ab5619d8/lib/yaml_ld/representation.rb', line 225 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 dts = datatypes(object).uniq = dts.inject({}) do |memo, dt| # Find the most suitable voabulary, if any if memo.keys.any? {|u| dt.to_s.start_with?(u)} memo # Already have a prefix for this elsif vocab = RDF::Vocabulary.each.to_a.detect {|v| dt.to_s.index(v.to_uri.to_s) == 0} # Index by vocabulary URI memo.merge(vocab.to_uri.to_s => "!#{vocab.__prefix__}!") else memo end end @emitter.start_document version, .invert.to_a, false accept object @emitter.end_document !@emitter.streaming? end |
#visit_RDF_Literal(o) ⇒ Object
Emit an RDF Literal. If extended
is set, use the datatype as an tag,
otherwise, emit in expanded form.
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# File 'vendor/bundler/ruby/3.2.0/bundler/gems/yaml-ld-3ed3ab5619d8/lib/yaml_ld/representation.rb', line 262 def visit_RDF_Literal o tag = case o.datatype when nil then nil when RDF::XSD.string then nil when RDF.langString "https://www.w3.org/ns/i18n##{o.language}" if @options[:extendedYAML] else if o.datatype.to_s.start_with?('https://www.w3.org/ns/i18n#') o.datatype.to_s if @options[:extendedYAML] elsif @options[:extendedYAML] o.datatype.to_s else nil end end formatted = o.value register o, @emitter.scalar(formatted, nil, tag, false, false, Psych::Nodes::Scalar::PLAIN) end |