Class: RDF::TriG::Reader
- Inherits:
-
RDF::Turtle::Reader
- Object
- Reader
- RDF::Turtle::Reader
- RDF::TriG::Reader
- Defined in:
- vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb
Overview
A parser for the TriG
Leverages the Turtle reader
Constant Summary
Constants included from Util::Logger
Constants included from RDF::Turtle::Terminals
RDF::Turtle::Terminals::ANON, RDF::Turtle::Terminals::BASE, RDF::Turtle::Terminals::BLANK_NODE_LABEL, RDF::Turtle::Terminals::DECIMAL, RDF::Turtle::Terminals::DOUBLE, RDF::Turtle::Terminals::ECHAR, RDF::Turtle::Terminals::EXPONENT, RDF::Turtle::Terminals::INTEGER, RDF::Turtle::Terminals::IRIREF, RDF::Turtle::Terminals::IRI_RANGE, RDF::Turtle::Terminals::LANG_DIR, RDF::Turtle::Terminals::PERCENT, RDF::Turtle::Terminals::PLX, RDF::Turtle::Terminals::PNAME_LN, RDF::Turtle::Terminals::PNAME_NS, RDF::Turtle::Terminals::PN_CHARS, RDF::Turtle::Terminals::PN_CHARS_BASE, RDF::Turtle::Terminals::PN_CHARS_BODY, RDF::Turtle::Terminals::PN_CHARS_U, RDF::Turtle::Terminals::PN_LOCAL, RDF::Turtle::Terminals::PN_LOCAL_BODY, RDF::Turtle::Terminals::PN_LOCAL_ESC, RDF::Turtle::Terminals::PN_PREFIX, RDF::Turtle::Terminals::PREFIX, RDF::Turtle::Terminals::STRING_LITERAL_LONG_QUOTE, RDF::Turtle::Terminals::STRING_LITERAL_LONG_SINGLE_QUOTE, RDF::Turtle::Terminals::STRING_LITERAL_QUOTE, RDF::Turtle::Terminals::STRING_LITERAL_SINGLE_QUOTE, RDF::Turtle::Terminals::UCHAR, RDF::Turtle::Terminals::U_CHARS1, RDF::Turtle::Terminals::U_CHARS2, RDF::Turtle::Terminals::WS
Instance Attribute Summary
Attributes included from EBNF::LL1::Parser
Attributes inherited from Reader
Attributes included from Enumerable
Instance Method Summary collapse
-
#add_statement(production, statement) ⇒ RDF::Statement
add a statement, object can be literal or URI or bnode.
-
#each_quad {|subject, predicate, object, graph_name| ... }
Iterates the given block for each RDF quad in the input.
-
#each_statement {|statement| ... }
Iterates the given block for each RDF statement in the input.
- #read_block ⇒ Object protected
- #read_labelOrSubject ⇒ RDF::Resource protected
- #read_trigDoc ⇒ Object protected
- #read_triples2 ⇒ Object protected
- #read_triplesBlock ⇒ Object protected
- #read_triplesOrGraph ⇒ Object protected
- #read_wrappedGraph ⇒ Object protected
Methods inherited from RDF::Turtle::Reader
#bnode, #debug, #each_triple, #error, #initialize, #inspect, #literal, options, #pname, #prefix, #process_iri, #prod, #progress, #read_BlankNode, #read_annotation, #read_blankNodePropertyList, #read_collection, #read_directive, #read_iri, #read_literal, #read_object, #read_objectList, #read_predicateObjectList, #read_reifiedTriple, #read_statement, #read_subject, #read_tripleTerm, #read_triples, #read_ttObject, #read_ttSubject, #read_verb, #recover
Methods included from Util::Logger
#log_debug, #log_depth, #log_error, #log_fatal, #log_info, #log_recover, #log_recovering?, #log_statistics, #log_warn, #logger
Methods included from EBNF::LL1::Parser
#add_prod_data, #add_prod_datum, #debug, #depth, #error, #parse, #prod_data, #progress, #warn
Methods inherited from Reader
#base_uri, #canonicalize?, #close, each, #each_pg_statement, #each_triple, #encoding, #fail_object, #fail_predicate, #fail_subject, for, format, #initialize, #intern?, #lineno, open, options, #prefix, #prefixes, #prefixes=, #read_statement, #read_triple, #rewind, #to_sym, to_sym, #valid?, #validate?
Methods included from Util::Aliasing::LateBound
Methods included from Enumerable
add_entailment, #canonicalize, #canonicalize!, #dump, #each_graph, #each_object, #each_predicate, #each_subject, #each_term, #each_triple, #entail, #enum_graph, #enum_object, #enum_predicate, #enum_quad, #enum_statement, #enum_subject, #enum_term, #enum_triple, #graph?, #graph_names, #invalid?, #method_missing, #object?, #objects, #predicate?, #predicates, #project_graph, #quad?, #quads, #respond_to_missing?, #statement?, #statements, #subject?, #subjects, #supports?, #term?, #terms, #to_a, #to_h, #to_set, #triple?, #triples, #valid?, #validate!
Methods included from Isomorphic
#bijection_to, #isomorphic_with?
Methods included from Countable
Methods included from Readable
Constructor Details
This class inherits a constructor from RDF::Turtle::Reader
Dynamic Method Handling
This class handles dynamic methods through the method_missing method in the class RDF::Enumerable
Instance Method Details
#add_statement(production, statement) ⇒ RDF::Statement
add a statement, object can be literal or URI or bnode
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb', line 91 def add_statement(production, statement) error("Statement is invalid: #{statement.inspect.inspect}", production: produciton) if validate? && statement.invalid? statement.graph_name = @graph_name if @graph_name @callback.call(statement) if statement.subject && statement.predicate && statement.object && (validate? ? statement.valid? : true) end |
#each_quad {|subject, predicate, object, graph_name| ... }
This method returns an undefined value.
Iterates the given block for each RDF quad in the input.
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb', line 76 def each_quad(&block) if block_given? each_statement do |statement| block.call(*statement.to_quad) end end enum_for(:each_quad) end |
#each_statement {|statement| ... }
This method returns an undefined value.
Iterates the given block for each RDF statement in the input.
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb', line 47 def each_statement(&block) if block_given? @recovering = false @callback = block begin while (@lexer.first rescue true) read_trigDoc end rescue EBNF::LL1::Lexer::Error, SyntaxError, EOFError, Recovery # Terminate loop if EOF found while recovering end if validate? && log_statistics[:error] raise RDF::ReaderError, "Errors found during processing" end end enum_for(:each_statement) end |
#read_block ⇒ Object (protected)
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb', line 109 def read_block prod(:block, %(})) do @graph_name = nil token = @lexer.first case token && (token.type || token.value) when :GRAPH @lexer.shift @graph_name = read_labelOrSubject || error("Expected label or subject", production: :block, token: @lexer.first) read_wrappedGraph || error("Expected wrappedGraph", production: :block, token: @lexer.first) @graph_name = nil when :IRIREF, :BLANK_NODE_LABEL, :ANON, :PNAME_LN, :PNAME_NS read_triplesOrGraph || error("Expected triplesOrGraph", production: :block, token: @lexer.first) when '{' read_wrappedGraph || error("Expected wrappedGraph", production: :block, token: @lexer.first) when '(', '[', '<<' read_triples2 || error("Expected collection or blankNodePropertyList", production: :block, token: @lexer.first) when nil # End of input else error("Unexpected token: #{@lexer.first.inspect}", production: :block, token: @lexer.first) end end end |
#read_labelOrSubject ⇒ RDF::Resource (protected)
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb', line 248 def read_labelOrSubject prod(:labelOrSubject) do read_iri || read_BlankNode end end |
#read_trigDoc ⇒ Object (protected)
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb', line 102 def read_trigDoc prod(:trigDoc, %(} .)) do read_directive || read_block end end |
#read_triples2 ⇒ Object (protected)
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb', line 160 def read_triples2 token = @lexer.first case token && token.value when '[' prod(:triples2) do # blankNodePropertyList predicateObjectList? subject = read_blankNodePropertyList || error("Failed to parse blankNodePropertyList", production: :triples2, token: @lexer.first) read_predicateObjectList(subject) if !@recovering || @lexer.first === '.' # If recovering, we will have eaten the closing '.' token = @lexer.shift unless token && token.value == '.' error("Expected '.' following triple", production: :triples2, token: token) end end true end when '(' prod(:triples2) do subject = read_collection || error("Failed to parse read_collection", production: :triples2, token: @lexer.first) token = @lexer.first case token && (token.type || token.value) when 'a', :IRIREF, :PNAME_LN, :PNAME_NS then read_predicateObjectList(subject) else error("Expected predicateObjectList after collection subject", production: :triples2, token: token) end if !@recovering || @lexer.first === '.' # If recovering, we will have eaten the closing '.' token = @lexer.shift unless token && token.value == '.' error("Expected '.' following triple", production: :triples2, token: token) end end true end when '<<' prod(:triples2) do subject = read_quotedTriple || error("Failed to parse embedded triple", production: :triples2, token: @lexer.first) token = @lexer.first case token && (token.type || token.value) when 'a', :IRIREF, :PNAME_LN, :PNAME_NS then read_predicateObjectList(subject) else error("Expected predicateObjectList after collection subject", production: :triples2, token: token) end if !@recovering || @lexer.first === '.' # If recovering, we will have eaten the closing '.' token = @lexer.shift unless token && token.value == '.' error("Expected '.' following triple", production: :triples2, token: token) end end true end end end |
#read_triplesBlock ⇒ Object (protected)
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb', line 236 def read_triplesBlock prod(:triplesBlock, %w(.)) do while (token = @lexer.first) && token.value != '}' && read_triples unless log_recovering? break unless @lexer.first === '.' @lexer.shift end end end end |
#read_triplesOrGraph ⇒ Object (protected)
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb', line 134 def read_triplesOrGraph while name = read_labelOrSubject prod(:triplesOrGraph, %(} .)) do token = @lexer.first case token && token.value when '{' @graph_name = name read_wrappedGraph || error("Expected wrappedGraph", production: :triplesOrGraph, token: @lexer.first) @graph_name = nil true else read_predicateObjectList(name) || error("Expected predicateObjectList", production: :triplesOrGraph, token: @lexer.first) unless @recovering # If recovering, we will have eaten the closing '.' token = @lexer.shift unless token && token.value == '.' error("Expected '.' following triple", production: :triplesOrGraph, token: token) end end end end end true end |
#read_wrappedGraph ⇒ Object (protected)
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-trig-ccb51eff7022/lib/rdf/trig/reader.rb', line 215 def read_wrappedGraph token = @lexer.first if token && token.value == '{' prod(:wrappedGraph, %w(})) do @lexer.shift while read_triplesBlock # Read until nothing found end if !@recovering || @lexer.first === '}' # If recovering, we will have eaten the closing '}' token = @lexer.shift unless token && token.value == '}' error("Expected '}' following triple", production: :wrappedGraph, token: token) end end true end end end |