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use std::str::FromStr;

pub enum FieldType {
  Unit,

  String,
  EncryptedString,

  Nothing,
  Any,

  Boolean,
  Byte,
  Short,
  Integer,
  Long,
  Float,
  Double,
  BigDecimal,

  ByteArray,
  Uuid,

  Date,
  Time,
  Timestamp,
  TimestampZoned,

  List,
  Set,
  Map,

  Ref,
  Json,
  Xml,

  Enum { key: String },
  Struct { key: String },
  Object { key: String, fields: Vec<String> },
  Intersection { key: String, types: Vec<FieldType> },
  Union { key: String, types: Vec<FieldType> },
  Method { params: Vec<String>, ret: Box<FieldType> }
}

impl FromStr for FieldType {
  type Err = ();

  fn from_str(s: &str) -> Result<FieldType, ()> {
    match s {
      "Unit" => Ok(FieldType::Unit),

      "String" => Ok(FieldType::String),
      "EncryptedString" => Ok(FieldType::EncryptedString),

      "Nothing" => Ok(FieldType::Nothing),
      "Any" => Ok(FieldType::Any),

      "Boolean" => Ok(FieldType::Boolean),
      "Byte" => Ok(FieldType::Byte),
      "Short" => Ok(FieldType::Short),
      "Integer" => Ok(FieldType::Integer),
      "Long" => Ok(FieldType::Long),
      "Float" => Ok(FieldType::Float),
      "Double" => Ok(FieldType::Double),
      "BigDecimal" => Ok(FieldType::BigDecimal),

      "ByteArray" => Ok(FieldType::ByteArray),
      "Uuid" => Ok(FieldType::Uuid),

      "Date" => Ok(FieldType::Date),
      "Time" => Ok(FieldType::Time),
      "Timestamp" => Ok(FieldType::Timestamp),
      "TimestampZoned" => Ok(FieldType::TimestampZoned),

      "List" => Ok(FieldType::List),
      "Set" => Ok(FieldType::Set),
      "Map" => Ok(FieldType::Map),

      "Ref" => Ok(FieldType::Ref),
      "Json" => Ok(FieldType::Json),
      "Xml" => Ok(FieldType::Xml),

      "Enum" => Ok(FieldType::Enum { key: "TODO".to_string() }),
      "Struct" => Ok(FieldType::Struct { key: "TODO".to_string() }),
      "Object" => Ok(FieldType::Object { key: "TODO".to_string(), fields: Vec::new() }),
      "Intersection" => Ok(FieldType::Intersection { key: "TODO".to_string(), types: Vec::new() }),
      "Union" => Ok(FieldType::Union { key: "TODO".to_string(), types: Vec::new() }),
      "Method" => Ok(FieldType::Method { params: Vec::new(), ret: Box::new(FieldType::Any) }),

      _ => Err(())
    }
  }
}