51 lines
2.2 KiB
Erlang
51 lines
2.2 KiB
Erlang
%% Grammar for N-Triples as specified in https://www.w3.org/TR/2014/REC-n-triples-20140225/
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Nonterminals ntriplesDoc nonEmptyNtriplesDoc triple subject predicate object literal quoted_triple eols.
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Terminals iriref blank_node_label string_literal_quote langtag '^^' '.' '<<' '>>' eol.
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Rootsymbol ntriplesDoc.
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eols -> eols eol.
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eols -> eol.
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ntriplesDoc -> nonEmptyNtriplesDoc : [ '$1'].
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ntriplesDoc -> eols nonEmptyNtriplesDoc : [ '$2'].
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ntriplesDoc -> eols : [].
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ntriplesDoc -> '$empty' : [].
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%nonEmptyNtriplesDoc -> triple eol nonEmptyNtriplesDoc : [ '$1' | '$3' ].
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%nonEmptyNtriplesDoc -> triple eol : [ '$1' ].
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%nonEmptyNtriplesDoc -> triple : [ '$1' ].
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nonEmptyNtriplesDoc -> triple eols nonEmptyNtriplesDoc : [ '$1' | '$3' ].
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nonEmptyNtriplesDoc -> triple eols : [ '$1' ].
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nonEmptyNtriplesDoc -> triple : [ '$1' ].
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triple -> subject predicate object '.' : { '$1', '$2', '$3' }.
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subject -> iriref : to_iri('$1').
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subject -> blank_node_label : to_bnode('$1').
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subject -> quoted_triple : '$1'.
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predicate -> iriref : to_iri('$1').
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object -> iriref : to_iri('$1').
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object -> blank_node_label : to_bnode('$1').
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object -> literal : '$1'.
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object -> quoted_triple : '$1'.
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literal -> string_literal_quote '^^' iriref : to_literal('$1', {datatype, to_iri('$3')}).
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literal -> string_literal_quote langtag : to_literal('$1', {language, to_langtag('$2')}).
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literal -> string_literal_quote : to_literal('$1').
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quoted_triple -> '<<' subject predicate object '>>' : { '$2', '$3', '$4' }.
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Erlang code.
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to_iri(IRIREF) ->
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case 'Elixir.RDF.Serialization.ParseHelper':to_iri(IRIREF) of
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{ok, URI} -> URI;
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{error, ErrorLine, Message} -> return_error(ErrorLine, Message)
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end.
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to_bnode(BLANK_NODE_LABEL) -> 'Elixir.RDF.Serialization.ParseHelper':to_bnode(BLANK_NODE_LABEL).
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to_literal(STRING_LITERAL_QUOTE) -> 'Elixir.RDF.Serialization.ParseHelper':to_literal(STRING_LITERAL_QUOTE).
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to_literal(STRING_LITERAL_QUOTE, Type) -> 'Elixir.RDF.Serialization.ParseHelper':to_literal(STRING_LITERAL_QUOTE, Type).
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to_langtag(LANGTAG) -> 'Elixir.RDF.Serialization.ParseHelper':to_langtag(LANGTAG).
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