Struct NotConstant 

pub struct NotConstant {
    pub at: ExprId,
    pub poisoned: bool,
}

Why an expression is not a constant.

Fields

at: ExprId

The node the folding stopped at, which is what a diagnostic should point at. It is the subexpression and not the whole thing, so that case 1 + f(): underlines the call.

poisoned: bool

Whether that node had already been diagnosed before the folding reached it.

The poisoning rule of spec/06-lexer-and-parser.md section 6.8: a caller says nothing about one of these, because something has already been said about the same source. It is not the same as the folding having warned, which it does about a division by zero and which gcc still follows with the caller’s message.

Trait Implementations

impl Clone for NotConstant

fn clone(&self) -> NotConstant

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for NotConstant

impl Debug for NotConstant

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for NotConstant

impl PartialEq for NotConstant

fn eq(&self, other: &NotConstant) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for NotConstant