rdf-ex/lib/rdf/inspect.ex
2020-06-29 10:37:42 +02:00

105 lines
2.5 KiB
Elixir

defmodule RDF.InspectHelper do
@moduledoc false
import Inspect.Algebra
def objects_doc(objects, opts) do
objects
|> Enum.map(fn {object, _} -> to_doc(object, opts) end)
|> fold_doc(fn object, acc -> line(object, acc) end)
end
def predications_doc(predications, opts) do
predications
|> Enum.map(fn {predicate, objects} ->
to_doc(predicate, opts)
|> line(objects_doc(objects, opts))
|> nest(4)
end)
|> fold_doc(fn predication, acc ->
line(predication, acc)
end)
end
def descriptions_doc(descriptions, opts) do
descriptions
|> Enum.map(fn {subject, description} ->
to_doc(subject, opts)
|> line(predications_doc(description.predications, opts))
|> nest(4)
end)
|> fold_doc(fn predication, acc ->
line(predication, acc)
end)
end
def surround_doc(left, doc, right) do
concat(concat(left, nest(doc, 1)), right)
end
end
defimpl Inspect, for: RDF.IRI do
def inspect(%RDF.IRI{value: value}, _opts) do
"~I<#{value}>"
end
end
defimpl Inspect, for: RDF.BlankNode do
def inspect(%RDF.BlankNode{id: id}, _opts) do
"~B<#{id}>"
end
end
defimpl Inspect, for: RDF.Literal do
def inspect(literal, _opts) do
"%RDF.Literal{literal: #{inspect(literal.literal)}, valid: #{RDF.Literal.valid?(literal)}}"
end
end
defimpl Inspect, for: RDF.Description do
import Inspect.Algebra
import RDF.InspectHelper
def inspect(%RDF.Description{subject: subject, predications: predications}, opts) do
doc =
space("subject:", to_doc(subject, opts))
|> line(predications_doc(predications, opts))
|> nest(4)
surround_doc("#RDF.Description{", doc, "}")
end
end
defimpl Inspect, for: RDF.Graph do
import Inspect.Algebra
import RDF.InspectHelper
def inspect(%RDF.Graph{name: name, descriptions: descriptions}, opts) do
doc =
space("name:", to_doc(name, opts))
|> line(descriptions_doc(descriptions, opts))
|> nest(4)
surround_doc("#RDF.Graph{", doc, "}")
end
end
defimpl Inspect, for: RDF.Dataset do
import Inspect.Algebra
import RDF.InspectHelper
def inspect(%RDF.Dataset{name: name} = dataset, opts) do
doc =
space("name:", to_doc(name, opts))
|> line(graphs_doc(RDF.Dataset.graphs(dataset), opts))
|> nest(4)
surround_doc("#RDF.Dataset{", doc, "}")
end
defp graphs_doc(graphs, opts) do
graphs
|> Enum.map(fn graph -> to_doc(graph, opts) end)
|> fold_doc(fn graph, acc -> line(graph, acc) end)
end
end