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69 changes: 69 additions & 0 deletions nova_vm/src/ecmascript/abstract_operations/type_conversion.rs
Original file line number Diff line number Diff line change
Expand Up @@ -596,6 +596,75 @@ pub(crate) fn try_to_integer_or_infinity<'a>(
TryResult::Continue(to_integer_or_infinity_number(agent, number))
}

/// ### [7.1.5 ToIntegerOrInfinity ( argument )](https://tc39.es/ecma262/#sec-tointegerorinfinity)
pub(crate) fn to_integer_number_or_infinity<'a>(
agent: &mut Agent,
argument: Value,
mut gc: GcScope<'a, '_>,
) -> JsResult<'a, Number<'a>> {
// Fast path: A safe integer is already an integer.
if let Value::Integer(int) = argument {
return Ok(Number::Integer(int));
}
// 1. Let number be ? ToNumber(argument).
let number = to_number(agent, argument, gc.reborrow()).unbind()?;
let gc = gc.into_nogc();
let number = number.bind(gc);

// Fast path: The value might've been eg. parsed into an integer.
if let Number::Integer(int) = number {
return Ok(Number::Integer(int));
}

// 2. If number is one of NaN, +0𝔽, or -0𝔽, return 0.
if number.is_nan(agent) || number.is_pos_zero(agent) || number.is_neg_zero(agent) {
return Ok(Number::from(0));
}

// 3. If number is +∞𝔽, return +∞.
if number.is_pos_infinity(agent) {
return Ok(Number::pos_inf());
}

// 4. If number is -∞𝔽, return -∞.
if number.is_neg_infinity(agent) {
return Ok(Number::neg_inf());
}

// 5. Return truncate(ℝ(number)).
Ok(number.unbind().truncate(agent, gc))
}

/// ### [7.1.5 ToIntegerOrInfinity ( argument )](https://tc39.es/ecma262/#sec-tointegerorinfinity)
pub(crate) fn number_convert_to_integer_or_infinity<'a>(
agent: &mut Agent,
number: Number<'a>,
gc: NoGcScope<'a, '_>,
) -> Number<'a> {
// Fast path: A safe integer is already an integer.
if let Number::Integer(int) = number {
return Number::Integer(int);
}

// 2. If number is one of NaN, +0𝔽, or -0𝔽, return 0.
if number.is_nan(agent) || number.is_pos_zero(agent) || number.is_neg_zero(agent) {
return Number::from(0);
}

// 3. If number is +∞𝔽, return +∞.
if number.is_pos_infinity(agent) {
return Number::pos_inf();
}

// 4. If number is -∞𝔽, return -∞.
if number.is_neg_infinity(agent) {
return Number::neg_inf();
}

// 5. Return truncate(ℝ(number)).
number.unbind().truncate(agent, gc)
}

/// ### [7.1.6 ToInt32 ( argument )](https://tc39.es/ecma262/#sec-toint32)
pub(crate) fn to_int32<'a>(
agent: &mut Agent,
Expand Down
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