boa_engine/value/
hash.rs

1use super::JsValue;
2use crate::JsVariant;
3use crate::builtins::Number;
4use std::hash::{Hash, Hasher};
5
6impl PartialEq for JsValue {
7    fn eq(&self, other: &Self) -> bool {
8        Self::same_value_zero(self, other)
9    }
10}
11
12impl Eq for JsValue {}
13
14#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
15struct UndefinedHashable;
16
17#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
18struct NullHashable;
19
20#[derive(Debug, Clone, Copy)]
21struct RationalHashable(f64);
22
23impl PartialEq for RationalHashable {
24    #[inline]
25    fn eq(&self, other: &Self) -> bool {
26        Number::same_value(self.0, other.0)
27    }
28}
29
30impl Eq for RationalHashable {}
31
32impl Hash for RationalHashable {
33    fn hash<H: Hasher>(&self, state: &mut H) {
34        self.0.to_bits().hash(state);
35    }
36}
37
38impl Hash for JsValue {
39    fn hash<H: Hasher>(&self, state: &mut H) {
40        match self.variant() {
41            JsVariant::Undefined => UndefinedHashable.hash(state),
42            JsVariant::Null => NullHashable.hash(state),
43            JsVariant::String(string) => string.hash(state),
44            JsVariant::Boolean(boolean) => boolean.hash(state),
45            JsVariant::Integer32(integer) => RationalHashable(f64::from(integer)).hash(state),
46            JsVariant::BigInt(bigint) => bigint.hash(state),
47            JsVariant::Float64(rational) => RationalHashable(rational).hash(state),
48            JsVariant::Symbol(symbol) => Hash::hash(&symbol, state),
49            JsVariant::Object(object) => object.hash(state),
50        }
51    }
52}
boa_engine/value/hash.rs

boa_engine/value/
hash.rs
