defmodule RDF.Sigils do @moduledoc """ Sigils for the most common types of RDF nodes. """ @doc ~S""" Handles the sigil `~I` for IRIs. Note: The given IRI string is precompiled into an IRI struct. ## Examples iex> import RDF.Sigils iex> ~I RDF.uri("http://example.com") """ defmacro sigil_I({:<<>>, _, [iri]}, []) when is_binary(iri) do Macro.escape(RDF.uri(iri)) end @doc ~S""" Handles the sigil `~B` for blank nodes. ## Examples iex> import RDF.Sigils iex> ~B RDF.bnode("foo") """ defmacro sigil_B({:<<>>, _, [bnode]}, []) when is_binary(bnode) do Macro.escape(RDF.BlankNode.new(bnode)) end @doc ~S""" Handles the sigil `~L` for plain Literals. The sigil modifier can be used to specify a language tag. Note: Languages with subtags are not supported. ## Examples iex> import RDF.Sigils iex> ~L"foo" RDF.literal("foo") iex> ~L"foo"en RDF.literal("foo", language: "en") """ defmacro sigil_L(value, language) defmacro sigil_L({:<<>>, _, [value]}, []) when is_binary(value) do Macro.escape(RDF.String.new(value)) end defmacro sigil_L({:<<>>, _, [value]}, language) when is_binary(value) do Macro.escape(RDF.LangString.new(value, %{language: to_string(language)})) end end