Struct FrameInfo 

pub struct FrameInfo {
    pub account_count: usize,
    pub instruction_data_range: Range<usize>,
    pub program_id_offset: usize,
    pub slot_offsets: [usize; 256],
}

Summary of a safely-parsed loader input frame.

Only metadata is returned. the full AccountView construction requires the raw pointer path. This struct is what off-chain tools (and fuzz harnesses) need to verify a buffer is well-formed.

The slot_offsets array is a fixed [usize; MAX_SAFE_ACCOUNT_SLOTS] with the first account_count entries populated. Remaining entries are zero. Callers can distinguish duplicate vs canonical slots by checking whether buffer[offset] equals 0xFF.

Fields

account_count: usize

Number of accounts the loader would hand to the program.

instruction_data_range: Range<usize>

Byte range of the instruction data within the original buffer.

program_id_offset: usize

Byte offset of the 32-byte program id within the original buffer.

slot_offsets: [usize; 256]

Byte offsets of each account slot, indexable 0..account_count.

Trait Implementations

impl Clone for FrameInfo

fn clone(&self) -> FrameInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FrameInfo

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

Formats the value using the given formatter.

impl PartialEq for FrameInfo

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for FrameInfo

impl StructuralPartialEq for FrameInfo