Module: SurrealDB::CBOR::Encoder

Defined in:
lib/surrealdb/cbor/encoder.rb

Class Method Summary collapse

Class Method Details

.encode(obj) ⇒ String

Encodes a Ruby object to CBOR bytes with SurrealDB custom tags.

Parameters:

  • obj (Object) —

    Ruby object to encode

Returns:

  • (String) —

    CBOR-encoded binary string



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# File 'lib/surrealdb/cbor/encoder.rb', line 15

def encode(obj)
  ::CBOR.encode(prepare(obj))
end

.prepare(obj) ⇒ Object

Recursively converts SurrealDB types to CBOR::Tagged before encoding.

Parameters:

  • obj (Object)

Returns:

  • (Object) —

    CBOR-encodable representation



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# File 'lib/surrealdb/cbor/encoder.rb', line 22

def prepare(obj) # rubocop:disable Metrics/AbcSize,Metrics/CyclomaticComplexity,Metrics/MethodLength,Metrics/PerceivedComplexity
  case obj
  when SurrealDB::None
    ::CBOR::Tagged.new(Tags::NONE, nil)
  when SurrealDB::Table
    ::CBOR::Tagged.new(Tags::TABLE, obj.name)
  when SurrealDB::RecordID
    ::CBOR::Tagged.new(Tags::RECORD_ID, [obj.table, prepare(obj.id)])
  when SurrealDB::Duration
    ::CBOR::Tagged.new(Tags::DURATION_COMPACT, [obj.secs, obj.nanos])
  when SurrealDB::Range
    ::CBOR::Tagged.new(Tags::RANGE, [prepare_bound(obj.begin_bound), prepare_bound(obj.end_bound)])
  when SurrealDB::BoundIncluded
    ::CBOR::Tagged.new(Tags::BOUND_INCLUDED, prepare(obj.value))
  when SurrealDB::BoundExcluded
    ::CBOR::Tagged.new(Tags::BOUND_EXCLUDED, prepare(obj.value))
  when SurrealDB::GeometryPoint
    ::CBOR::Tagged.new(Tags::GEOMETRY_POINT, [obj.longitude, obj.latitude])
  when SurrealDB::GeometryLine
    ::CBOR::Tagged.new(Tags::GEOMETRY_LINE, encode_line_coords(obj))
  when SurrealDB::GeometryPolygon
    ::CBOR::Tagged.new(Tags::GEOMETRY_POLYGON, encode_polygon(obj))
  when SurrealDB::GeometryMultiPoint
    ::CBOR::Tagged.new(Tags::GEOMETRY_MULTIPOINT, obj.points.map { |p| [p.longitude, p.latitude] })
  when SurrealDB::GeometryMultiLine
    ::CBOR::Tagged.new(Tags::GEOMETRY_MULTILINE, obj.lines.map { |l| encode_line_coords(l) })
  when SurrealDB::GeometryMultiPolygon
    ::CBOR::Tagged.new(Tags::GEOMETRY_MULTIPOLYGON, obj.polygons.map { |p| encode_polygon(p) })
  when SurrealDB::GeometryCollection
    ::CBOR::Tagged.new(Tags::GEOMETRY_COLLECTION, obj.geometries.map { |g| prepare(g) })
  when Time
    ::CBOR::Tagged.new(Tags::DATETIME_COMPACT, [obj.to_i, obj.nsec])
  when BigDecimal
    ::CBOR::Tagged.new(Tags::DECIMAL_STRING, obj.to_s('F'))
  when Hash
    obj.transform_values { |v| prepare(v) }
  when Array
    obj.map { |v| prepare(v) }
  else
    obj
  end
end