Module: Cel::Protobuf

Defined in:
lib/cel/ast/elements/protobuf.rb

Class Method Summary collapse

Class Method Details

.convert_from_protobuf(msg) ⇒ Object 



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# File 'lib/cel/ast/elements/protobuf.rb', line 12

def convert_from_protobuf(msg)
  case msg
  when Google::Protobuf::Any

    any.unpack(type_msg).to_ruby
  when Google::Protobuf::ListValue
    msg.to_a
  when Google::Protobuf::Struct
    msg.to_h
  when Google::Protobuf::Value
    msg.to_ruby
  when Google::Protobuf::BoolValue,
       Google::Protobuf::BytesValue,
       Google::Protobuf::DoubleValue,
       Google::Protobuf::FloatValue,
       Google::Protobuf::Int32Value,
       Google::Protobuf::Int64Value,
       Google::Protobuf::UInt32Value,
       Google::Protobuf::UInt64Value,
       Google::Protobuf::NullValue,
       Google::Protobuf::StringValue
    msg.value
  when Google::Protobuf::Timestamp
    msg.to_time
  when Google::Protobuf::Duration
    Cel::Duration.new(seconds: msg.seconds, nanos: msg.nanos)
  else
    raise Error, "#{msg.class}: protobuf to cel unsupported"
  end
end

.convert_from_type(type, value) ⇒ Object 



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# File 'lib/cel/ast/elements/protobuf.rb', line 43

def convert_from_type(type, value)
  case type
  when "Any", "google.protobuf.Any"
    type_url = value[Identifier.new("type_url")].value
    _, type_msg = type_url.split("/", 2)
    type_msg = const_get(type_msg.split(".").map(&:capitalize).join("::"))
    encoded_msg = value[Identifier.new("value")].value.pack("C*")
    any = Google::Protobuf::Any.new(type_url: type_url, value: encoded_msg)
    value = Literal.to_cel_type(any.unpack(type_msg).to_ruby)
  when "ListValue", "google.protobuf.ListValue"
    value = value.nil? ? List.new([]) : value[Identifier.new("values")]
  when "Struct", "google.protobuf.Struct"
    value = value.nil? ? Map.new({}) : value[Identifier.new("fields")]
  when "Value", "google.protobuf.Value"
    return Null.new if value.nil?

    key = value.keys.first

    value = value.fetch(key, value)

    value = case key
            when "null_value"
              Null.new if value.zero?
            when "number_value"
              value = -value.operands.first if value.is_a?(Operation) && value.op == "-" && value.unary?
              Number.new(:double, value)
            else
              value
    end
  when "BoolValue", "google.protobuf.BoolValue"
    value = value.nil? ? Bool.new(false) : value[Identifier.new("value")]
  when "BytesValue", "google.protobuf.BytesValue"
    value = value[Identifier.new("value")]
  when "DoubleValue", "google.protobuf.DoubleValue",
       "FloatValue", "google.protobuf.FloatValue"
    value = value.nil? ? Number.new(:double, 0.0) : value[Identifier.new("value")]
    value.type = TYPES[:double]
  when "Int32Value", "google.protobuf.Int32Value",
       "Int64Value", "google.protobuf.Int64Value"
    value = value.nil? ? Number.new(:int, 0) : value[Identifier.new("value")]
  when "Uint32Value", "google.protobuf.UInt32Value",
       "Uint64Value", "google.protobuf.UInt64Value"
    value = value.nil? ? Number.new(:uint, 0) : value[Identifier.new("value")]
  when "NullValue", "google.protobuf.NullValue"
    value = Null.new
  when "StringValue", "google.protobuf.StringValue"
    value = value.nil? ? String.new(+"") : value[Identifier.new("value")]
  when "Timestamp", "google.protobuf.Timestamp"
    seconds = value.fetch(Identifier.new("seconds"), 0)
    nanos = value.fetch(Identifier.new("nanos"), 0)
    value = Timestamp.new(Time.at(seconds, nanos, :nanosecond))
  when "Duration", "google.protobuf.Duration"
    seconds = value.fetch(Identifier.new("seconds"), 0)
    nanos = value.fetch(Identifier.new("nanos"), 0)
    value = Duration.new(seconds: seconds, nanos: nanos)
  end
  value
end

.try_invoke_from(var, func, args) ⇒ Object 



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# File 'lib/cel/ast/elements/protobuf.rb', line 102

def try_invoke_from(var, func, args)
  case var
  when "Any", "google.protobuf.Any",
    "ListValue", "google.protobuf.ListValue",
    "Struct", "google.protobuf.Struct",
    "Value", "google.protobuf.Value",
    "BoolValue", "google.protobuf.BoolValue",
    "BytesValue", "google.protobuf.BytesValue",
    "DoubleValue", "google.protobuf.DoubleValue",
    "FloatValue", "google.protobuf.FloatValue",
    "Int32Value", "google.protobuf.Int32Value",
    "Int64Value", "google.protobuf.Int64Value",
    "Uint32Value", "google.protobuf.Uint32Value",
    "Uint64Value", "google.protobuf.Uint64Value",
    "NullValue", "google.protobuf.NullValue",
    "StringValue", "google.protobuf.StringValue",
    "Timestamp", "google.protobuf.Timestamp",
    "Duration", "google.protobuf.Duration"
    protoclass = var.split(".").last
    protoclass = Google::Protobuf.const_get(protoclass)

    value = if args.nil? && protoclass.constants.include?(func.to_sym)
      protoclass.const_get(func)
    else
      protoclass.__send__(func, *args)
    end

    Literal.to_cel_type(value)
  end
end