solar_sema::eval

Struct ConstantEvaluator

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pub struct ConstantEvaluator<'gcx> {
    pub gcx: Gcx<'gcx>,
    /* private fields */
}
Expand description

Evaluates simple constants.

This only supports basic arithmetic and logical operations, and does not support more complex operations like function calls or memory allocation.

This is only supposed to be used for array sizes and other simple constants.

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§gcx: Gcx<'gcx>

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impl<'gcx> ConstantEvaluator<'gcx>

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pub fn new(gcx: Gcx<'gcx>) -> Self

Creates a new constant evaluator.

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pub fn eval(&mut self, expr: &Expr<'_>) -> Result<IntScalar, ErrorGuaranteed>

Evaluates the given expression, emitting an error diagnostic if it fails.

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pub fn try_eval(&mut self, expr: &Expr<'_>) -> Result<IntScalar, EvalError>

Evaluates the given expression, returning an error if it fails.

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pub fn emit_eval_error( &self, expr: &Expr<'_>, err: EvalError, ) -> ErrorGuaranteed

Emits a diagnostic for the given evaluation error.

Auto Trait Implementations§

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impl<'gcx> Freeze for ConstantEvaluator<'gcx>

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impl<'gcx> !RefUnwindSafe for ConstantEvaluator<'gcx>

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impl<'gcx> Send for ConstantEvaluator<'gcx>

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impl<'gcx> Sync for ConstantEvaluator<'gcx>

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impl<'gcx> Unpin for ConstantEvaluator<'gcx>

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impl<'gcx> !UnwindSafe for ConstantEvaluator<'gcx>

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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fn conv<T>(self) -> T
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Converts self into T using Into<T>. Read more
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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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fn from(t: T) -> T

Returns the argument unchanged.

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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Mutably borrows self and passes that borrow into the pipe function. Read more
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Borrows self, then passes self.borrow() into the pipe function. Read more
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Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
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where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.
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where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

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Mutably borrows self, then passes self.deref_mut() into the pipe function.
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