Enum ForInit 

pub enum ForInit {
    None,
    Expr(Expr),
    Decl(Box<Decl>),
    StaticAssert(StaticAssert),
}

The init clause of a for statement.

Variants

None

for (; …)

Expr(Expr)

for (expr; …)

Decl(Box<Decl>)

for (int i = 0; …) — C99.

StaticAssert(StaticAssert)

for (_Static_assert(1, "…"); …).

A static assertion is a declaration, so the grammar puts it here, and C11 6.8.5p3 then forbids it — the clause may only declare objects with automatic or register storage duration, and this declares nothing at all. GCC and Clang both accept it anyway (Clang’s C11/n1330.c says so in as many words), it asserts exactly what it would one line higher up, and refusing it would be refusing something both compilers this crate follows take.

Trait Implementations

impl Clone for ForInit

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ForInit

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

Formats the value using the given formatter.

impl PartialEq for ForInit

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ForInit