Class: Protojson::Codec::Hash
- Inherits:
-
Object
- Object
- Protojson::Codec::Hash
- Extended by:
- CodecInterface
- Defined in:
- lib/protojson/codec/hash.rb
Class Method Summary collapse
-
.decode(message, data, decoding_key = :name) ⇒ Object
This method parses a JSON encoded message to the message object.
-
.encode(message, encoding_key = :name) ⇒ Hash
Encode the message to a hash object defined as a collection for key/values where each element has: - key: field tag - value: - if field.is_a? message_field => field.value.serialized_to_hash - if field.is_a? enum_field => field.value.value - else => field.value.
Methods included from CodecInterface
Class Method Details
.decode(message, data, decoding_key = :name) ⇒ Object
This method parses a JSON encoded message to the message object
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# File 'lib/protojson/codec/hash.rb', line 80 def decode(, data, decoding_key = :name) = .new # per each hash element: data.each_pair { |key, value| key = decoding_key.eql?(:tag) ? key.to_i : key.to_s # get the field object using the key (field tag) #field = message.get_field_by_tag(key.to_i) field = .send("get_field_by_#{decoding_key}".to_sym, key) if field.nil? # ignore unknown field elsif field.repeated? # create the element array = .__send__(field.name) value.each { |val| # if value is a complex field, create the object and parse the content if field.is_a?(Protobuf::Field::MessageField) instance = field.type val = decode(instance, val, decoding_key) end # include each element in the parent element field array.push(val) } else # if value is a complex field, create the object and parse the content if field.is_a?(Protobuf::Field::MessageField) instance = field.type value = decode(instance, value, decoding_key) end # set the message field .__send__("#{field.name}=", value) end } end |
.encode(message, encoding_key = :name) ⇒ Hash
Encode the message to a hash object defined as a collection for key/values where each element has:
-
key: field tag
-
value:
-
if field.is_a? message_field => field.value.serialized_to_hash
-
if field.is_a? enum_field => field.value.value
-
else => field.value
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# File 'lib/protojson/codec/hash.rb', line 21 def encode(, encoding_key = :name) raise NotInitializedError unless .initialized? # var to store the encoded message fields result = {} # lambda function that extract the field tag and value # it's called recursively if value is a MessageField field_value_to_string = lambda { |field, value| field_value = \ if field.optional? && !.has_field?(field.name) '' else case field when Protobuf::Field::MessageField if value.nil? nil else encode(value, encoding_key) end when Protobuf::Field::EnumField if value.is_a?(Protobuf::EnumValue) value.value else value.to_i end else value end end return field.send(encoding_key), field_value } # per each message field create a new element in result var with # key = field.tag and value = field.value .each_field do |field, value| # create a vector if field is repeated if field.repeated? && !value.empty? key_value = [] key = nil value.each do |v| key, val = field_value_to_string.call(field, v) # always return the same key key_value.push val end # field is not repeated but is not empty elsif !field.repeated? key, key_value = field_value_to_string.call(field, value) # empty field, discard else next end # new element in result Hash unless key_value.nil? or (key_value.respond_to?(:empty?) and key_value.empty?) result[key.to_s] = key_value end end result end |