Struct StructLayout 

pub struct StructLayout {
    pub fields: Vec<FieldInfo>,
    pub total_size: usize,
    pub heap_field_mask: u64,
}

Computed C-compatible layout for a typed struct.

The layout starts with an 8-byte HeapHeader at offset 0. Fields follow at offset 8+ with natural alignment padding between them. The total size is rounded up to 8-byte alignment.

Fields

fields: Vec<FieldInfo>

total_size: usize

heap_field_mask: u64

Implementations

impl StructLayout

pub fn new(fields: &[(impl AsRef<str>, FieldKind)]) -> Self

Compute layout from field definitions. HeapHeader is at offset 0 (8 bytes). Fields start at offset 8, with natural alignment padding.

pub fn field_offset(&self, idx: usize) -> usize

pub fn field_kind(&self, idx: usize) -> FieldKind

pub fn total_size(&self) -> usize

pub fn field_count(&self) -> usize

Trait Implementations

impl Debug for StructLayout

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

Formats the value using the given formatter.