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use std::convert::From;
use crate::{
binding::float,
types::{Value, ValueType},
AnyException, AnyObject, Object, VerifiedObject, VM,
};
/// `Float`
#[derive(Debug)]
#[repr(C)]
pub struct Float {
value: Value,
}
impl Float {
/// Creates a new `Float`.
///
/// # Examples
///
/// ```
/// use rutie::{Float, VM};
/// # VM::init();
///
/// let float = Float::new(1.23);
///
/// assert_eq!(float.to_f64(), 1.23);
/// ```
///
/// Ruby:
///
/// ```ruby
/// 1.23 == 1.23
/// ```
pub fn new(num: f64) -> Self {
Self::from(float::float_to_num(num))
}
/// Retrieves an `f64` value from `Float`.
///
/// # Examples
///
/// ```
/// use rutie::{Float, VM};
/// # VM::init();
///
/// let float = Float::new(1.23);
///
/// assert_eq!(float.to_f64(), 1.23);
/// ```
///
/// Ruby:
///
/// ```ruby
/// 1.23 == 1.23
/// ```
pub fn to_f64(&self) -> f64 {
float::num_to_float(self.value())
}
/// Cast any object to a `Float` implicitly, otherwise
/// returns an `AnyException`
///
/// # Examples
///
/// ```
/// use rutie::{Integer, Float, Object, VM};
/// # VM::init();
///
/// let integer = Integer::new(3);
///
/// assert_eq!(Float::implicit_to_f(integer), Ok(Float::new(3.0)));
/// ```
///
/// Ruby:
///
/// ```ruby
/// Float(3) == 3.0
/// ```
pub fn implicit_to_f(object: impl Object) -> Result<Float, AnyException> {
float::implicit_to_f(object.value())
}
}
impl From<Value> for Float {
fn from(value: Value) -> Self {
Float { value }
}
}
impl Into<Value> for Float {
fn into(self) -> Value {
self.value
}
}
impl Into<AnyObject> for Float {
fn into(self) -> AnyObject {
AnyObject::from(self.value)
}
}
impl Object for Float {
#[inline]
fn value(&self) -> Value {
self.value
}
}
impl VerifiedObject for Float {
fn is_correct_type<T: Object>(object: &T) -> bool {
object.value().ty() == ValueType::Float
}
fn error_message() -> &'static str {
"Error converting to Float"
}
}
impl PartialEq for Float {
fn eq(&self, other: &Self) -> bool {
self.equals(other)
}
}