Enum VerifyError 

pub enum VerifyError {
    UnknownOpcode {
        at: usize,
        byte: u8,
    },
    ConstOutOfRange {
        at: usize,
        index: u32,
        len: usize,
    },
    FunctionOutOfRange {
        at: usize,
        index: u32,
        len: usize,
    },
    JumpOutOfRange {
        at: usize,
        target: i64,
        len: usize,
    },
    EmptyFunctionTable,
    EntryOutOfRange {
        function: usize,
        entry: u32,
        len: usize,
    },
    ArityExceedsRegisters {
        function: usize,
        arity: u8,
        num_registers: u8,
    },
    ForbiddenConstant {
        index: usize,
        kind: ConstantKind,
    },
}

Why a Chunk failed verification.

The verifier’s job is to make every fact the interpreter’s hot loop relies on (jump targets in range, constant/function indices in range) true before a single instruction runs, so byteflow-vm never has to re-check them per-step. Skipping this on trusted, compiler-generated bytecode is fine; it is mandatory before loading anything that crossed a trust boundary (a plugin, a network-fetched module, see design notes §24 capability/sandboxing).

Variants

UnknownOpcode

Fields

at: usize

byte: u8

ConstOutOfRange

Fields

at: usize

index: u32

len: usize

FunctionOutOfRange

Fields

at: usize

index: u32

len: usize

JumpOutOfRange

Fields

at: usize

target: i64

len: usize

EmptyFunctionTable

EntryOutOfRange

Fields

function: usize

entry: u32

len: usize

ArityExceedsRegisters

A function declares more parameters than it has registers to hold them. The VM loads r0..arity on entry, so this makes the very first thing a call does — copying arguments in — reach past the register file. Cheap to settle here: it is a static property of the function table, one comparison per function, and no amount of runtime checking makes such a function callable.

Fields

function: usize

arity: u8

num_registers: u8

ForbiddenConstant

Untrusted chunk embedded a Cap, Pid, or Message in the constant pool.

Fields

index: usize

kind: ConstantKind

Trait Implementations

impl Clone for VerifyError

fn clone(&self) -> VerifyError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VerifyError

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

Formats the value using the given formatter.

impl Display for VerifyError

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

Formats the value using the given formatter.

impl Eq for VerifyError

impl Error for VerifyError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for VerifyError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for VerifyError