Struct CodeValue 

pub struct CodeValue {
    pub tag: CodeTag,
    pub heap: c_int,
    /* private fields */
}

A value: its kind, whether it holds a counted block, and one payload the kind decides — read it through the methods (number(), len(), …), which answer 0/null for a value of another kind. ABI version 2: 16 bytes, a list’s count and keys in its block (code_abi.h’s CodeList).

Fields

tag: CodeTag

heap: c_int

Implementations

impl CodeValue

pub fn number(&self) -> f64

A Number’s value; 0 for anything else.

pub fn str_ptr(&self) -> *const c_char

A Str’s characters; null for anything else.

pub fn boolean(&self) -> c_int

A Bool’s flag; 0 for anything else.

pub fn len(&self) -> i64

An Array’s or Object’s element count; 0 for anything else.

pub fn is_empty(&self) -> bool

Whether len is 0.

pub fn items(&self) -> *mut c_void

An Array’s or Object’s slots, for slot_at; null when it has none.

pub fn keys(&self) -> *mut *const c_char

An Object’s key pointers, parallel to items; null for anything else.

pub fn zeroed() -> Self

An all-zero value — tag Number, 0.0, not heap-owned. Bit-for-bit what CodeValue x = {0}; produces in C, and the required starting state before passing &mut to any constructor below (each one calls code_release on out first, exactly like the C ABI expects).

Trait Implementations

impl Default for CodeValue

fn default() -> Self

Returns the “default value” for a type.

impl Send for CodeValue

impl Sync for CodeValue