FnDecl in rustc_ast::ast - Rust (original) (raw)

pub struct FnDecl {
    pub inputs: ThinVec<Param>,
    pub output: FnRetTy,
}

Expand description

A signature (not the body) of a function declaration.

E.g., fn foo(bar: baz).

Please note that it’s different from FnHeader structure which contains metadata about function safety, asyncness, constness and ABI.

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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 24 bytes