90 lines
2.6 KiB
Elixir
90 lines
2.6 KiB
Elixir
defmodule RDF.Literal.Guards do
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@moduledoc """
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Guards for working with `RDF.Literal`s.
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These are useful for pattern matching on datatypes of literals, since
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Elixir doesn't allow function calls in pattern matching clauses, which means
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the qualified terms of a `RDF.Vocabulary.Namespace` can't be used.
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## Examples
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defmodule M do
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import RDF.Literal.Guards
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def f(%RDF.Literal{datatype: datatype} = literal) when is_xsd_integer(datatype) do
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# ...
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end
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end
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"""
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alias RDF.Datatype.NS.XSD
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@xsd_integer XSD.integer()
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@xsd_decimal XSD.decimal()
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@xsd_float XSD.float()
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@xsd_double XSD.double()
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@xsd_string XSD.string()
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@xsd_boolean XSD.boolean()
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@xsd_dateTime XSD.dateTime()
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@xsd_date XSD.date()
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@xsd_time XSD.time()
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@xsd_any_uri XSD.anyURI()
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@rdf_lang_string RDF.langString()
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@doc """
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Returns `true` if the given datatype is `xsd:integer`; otherwise returns `false`.
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"""
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defguard is_xsd_integer(datatype) when datatype == @xsd_integer
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@doc """
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Returns `true` if the given datatype is `xsd:decimal`; otherwise returns `false`.
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"""
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defguard is_xsd_decimal(datatype) when datatype == @xsd_decimal
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@doc """
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Returns `true` if the given datatype is `xsd:float`; otherwise returns `false`.
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"""
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defguard is_xsd_float(datatype) when datatype == @xsd_float
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@doc """
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Returns `true` if the given datatype is `xsd:double`; otherwise returns `false`.
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"""
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defguard is_xsd_double(datatype) when datatype == @xsd_double
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@doc """
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Returns `true` if the given datatype is `xsd:string`; otherwise returns `false`.
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"""
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defguard is_xsd_string(datatype) when datatype == @xsd_string
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@doc """
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Returns `true` if the given datatype is `xsd:boolean`; otherwise returns `false`.
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"""
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defguard is_xsd_boolean(datatype) when datatype == @xsd_boolean
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@doc """
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Returns `true` if the given datatype is `xsd:dateTime`; otherwise returns `false`.
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"""
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defguard is_xsd_datetime(datatype) when datatype == @xsd_dateTime
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@doc """
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Returns `true` if the given datatype is `xsd:date`; otherwise returns `false`.
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"""
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defguard is_xsd_date(datatype) when datatype == @xsd_date
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@doc """
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Returns `true` if the given datatype is `xsd:time`; otherwise returns `false`.
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"""
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defguard is_xsd_time(datatype) when datatype == @xsd_time
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@doc """
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Returns `true` if the given datatype is `xsd:anyURI`; otherwise returns `false`.
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"""
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defguard is_xsd_any_uri(datatype) when datatype == @xsd_any_uri
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@doc """
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Returns `true` if the given datatype is `rdf:langString`; otherwise returns `false`.
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"""
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defguard is_rdf_lang_string(datatype) when datatype == @rdf_lang_string
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end
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