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use std::str::FromStr;
use { Dictionary, FromIon, IonError, Row };
#[derive(Debug, PartialEq, Clone)]
pub enum Value {
String(String),
Integer(i64),
Float(f64),
Boolean(bool),
Array(Row),
Dictionary(Dictionary)
}
impl Value {
pub fn type_str(&self) -> &'static str {
match *self {
Value::String(..) => "string",
Value::Integer(..) => "integer",
Value::Float(..) => "float",
Value::Boolean(..) => "boolean",
Value::Array(..) => "array",
Value::Dictionary(..) => "dictionary"
}
}
pub fn as_string(&self) -> Option<&String> {
match *self {
Value::String(ref v) => Some(v),
_ => None
}
}
pub fn as_str(&self) -> Option<&str> {
match *self {
Value::String(ref v) => Some(v.as_str()),
_ => None
}
}
pub fn as_integer(&self) -> Option<i64> {
match *self {
Value::Integer(v) => Some(v),
_ => None
}
}
pub fn as_float(&self) -> Option<f64> {
match *self {
Value::Float(v) => Some(v),
_ => None
}
}
pub fn as_boolean(&self) -> Option<bool> {
match *self {
Value::Boolean(v) => Some(v),
_ => None
}
}
pub fn as_array(&self) -> Option<&Vec<Value>> {
match *self {
Value::Array(ref v) => Some(v),
_ => None
}
}
pub fn as_dictionary(&self) -> Option<&Dictionary> {
match *self {
Value::Dictionary(ref v) => Some(v),
_ => None
}
}
pub fn get(&self, name: &str) -> Option<&Value> {
match *self {
Value::Dictionary(ref v) => v.get(name),
_ => None
}
}
pub fn from_ion<F : FromIon<Value>>(&self) -> Result<F, F::Err> {
F::from_ion(self)
}
pub fn parse<F : FromStr>(&self) -> Result<F, F::Err> {
match self.as_string() {
Some(s) => s.parse(),
None => self.to_string().parse()
}
}
}
impl FromStr for Value {
type Err = IonError;
fn from_str(s: &str) -> Result<Value, IonError> {
Ok(Value::String(s.to_owned()))
}
}
#[cfg(test)]
mod tests {
use Value;
#[test]
fn integer() {
let v : Value = "1".parse().unwrap();
assert_eq!(1, v.parse().unwrap());
}
#[test]
fn float() {
let v : Value = "4.0".parse().unwrap();
assert_eq!(4.0f64, v.parse().unwrap());
}
}