Enum ProgramError 

pub enum ProgramError {
    BadJump {
        at: usize,
        target: u32,
    },
    BadRegister {
        at: usize,
        index: u16,
    },
    StackUnderflow {
        at: usize,
    },
    DuplicateRegister(String),
    BadLine {
        line: usize,
        text: String,
    },
    BadHeader(&'static str),
}

What is wrong with a program, as a surfaced load error.

Variants

BadJump

A jump operand addresses no instruction.

Fields

at: usize

The instruction holding the jump.

target: u32

The operand.

BadRegister

A register index is at or past the declared register count.

Fields

at: usize

The instruction holding it.

index: u16

The index.

StackUnderflow

The program pops more than it pushes somewhere, so the stack would underflow.

Fields

at: usize

The instruction that would underflow.

DuplicateRegister(String)

A .regs name appears twice, so register could not say which one a host meant.

BadLine

An assembly line the decoder does not recognize.

Fields

line: usize

1-based line number in the assembly text.

text: String

The offending text.

BadHeader(&'static str)

A .regs or .code header is missing or out of order.

Trait Implementations

impl Clone for ProgramError

fn clone(&self) -> ProgramError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProgramError

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

Formats the value using the given formatter.

impl Display for ProgramError

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

Formats the value using the given formatter.

impl Error for ProgramError

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 ProgramError

fn eq(&self, other: &ProgramError) -> 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 ProgramError

impl StructuralPartialEq for ProgramError