Enum HintErrorKind 

pub enum HintErrorKind {
    UnexpectedEndOfBytecode,
    UnhandledOpcode(Opcode),
    DefinitionInGlyphProgram,
    NestedDefinition,
    DefinitionTooLarge,
    TooManyDefinitions,
    InvalidDefinition(usize),
    ValueStackOverflow,
    ValueStackUnderflow,
    CallStackOverflow,
    CallStackUnderflow,
    InvalidStackValue(i32),
    InvalidPointIndex(usize),
    InvalidPointRange(usize, usize),
    InvalidContourIndex(usize),
    InvalidCvtIndex(usize),
    InvalidStorageIndex(usize),
    DivideByZero,
    InvalidZoneIndex(i32),
    NegativeLoopCounter,
    InvalidJump,
    ExceededExecutionBudget,
}

What went wrong, without the context of where.

Variants

UnexpectedEndOfBytecode

An instruction’s operands ran past the end of the bytecode.

UnhandledOpcode(Opcode)

The interpreter does not implement this instruction.

DefinitionInGlyphProgram

A glyph program tried to define a function or instruction, which only the font program may do.

NestedDefinition

A function or instruction definition began inside another.

DefinitionTooLarge

A definition exceeded the maximum size of 64k.

TooManyDefinitions

More definitions than the interpreter has room for.

InvalidDefinition(usize)

A call referenced a definition that was never made.

ValueStackOverflow

A push exceeded the value stack.

ValueStackUnderflow

A pop found the value stack empty.

CallStackOverflow

Calls nested deeper than the interpreter allows.

CallStackUnderflow

A return found the call stack empty.

InvalidStackValue(i32)

The value on the stack made no sense for the instruction reading it.

InvalidPointIndex(usize)

A point index was past the end of the zone.

InvalidPointRange(usize, usize)

A point range ran past the end of the zone.

InvalidContourIndex(usize)

A contour index was past the end of the glyph.

InvalidCvtIndex(usize)

A control value table index was out of bounds.

InvalidStorageIndex(usize)

A storage area index was out of bounds.

DivideByZero

A division had a zero divisor.

InvalidZoneIndex(i32)

A zone index other than 0 (twilight) or 1 (glyph).

NegativeLoopCounter

An attempt to set the loop counter to a negative value.

InvalidJump

A jump left the bounds of the program.

ExceededExecutionBudget

The program ran longer than the interpreter’s budget allows.

Trait Implementations

impl Clone for HintErrorKind

fn clone(&self) -> HintErrorKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HintErrorKind

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

Formats the value using the given formatter.

impl Display for HintErrorKind

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

Formats the value using the given formatter.

impl From<DecodeError> for HintErrorKind

fn from(_: DecodeError) -> Self

Converts to this type from the input type.

impl PartialEq for HintErrorKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HintErrorKind