67 lines
1.5 KiB
Rust
67 lines
1.5 KiB
Rust
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// BoolBox implementation - Boolean values in Nyash
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use crate::box_trait::NyashBox;
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use std::any::Any;
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use std::fmt::Display;
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/// Boolean values in Nyash - true/false
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#[derive(Debug, Clone, PartialEq)]
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pub struct BoolBox {
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pub value: bool,
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id: u64,
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}
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impl BoolBox {
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pub fn new(value: bool) -> Self {
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static mut COUNTER: u64 = 0;
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let id = unsafe {
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COUNTER += 1;
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COUNTER
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};
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Self { value, id }
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}
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pub fn true_box() -> Self {
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Self::new(true)
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}
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pub fn false_box() -> Self {
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Self::new(false)
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}
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}
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impl NyashBox for BoolBox {
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fn to_string_box(&self) -> crate::box_trait::StringBox {
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crate::box_trait::StringBox::new(if self.value { "true" } else { "false" })
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}
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fn equals(&self, other: &dyn NyashBox) -> crate::box_trait::BoolBox {
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if let Some(other_bool) = other.as_any().downcast_ref::<BoolBox>() {
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crate::box_trait::BoolBox::new(self.value == other_bool.value)
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} else {
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crate::box_trait::BoolBox::new(false)
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}
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}
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fn type_name(&self) -> &'static str {
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"BoolBox"
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}
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fn clone_box(&self) -> Box<dyn NyashBox> {
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Box::new(self.clone())
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}
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fn as_any(&self) -> &dyn Any {
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self
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}
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fn box_id(&self) -> u64 {
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self.id
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}
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}
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impl Display for BoolBox {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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write!(f, "{}", if self.value { "true" } else { "false" })
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}
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}
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