Enum TurtleMode 

pub enum TurtleMode {
    Flat,
    Space,
}

Which turtle walks the grammar: [generator] turtle (ADR-0258).

Flat is the plane walk above, and the default, so a preset that does not name a turtle walks exactly what it always did. Space carries a full orientation frame and reads the five space symbols; in Flat they stay inert grammar variables.

Variants

Flat

The plane turtle: x, y and one heading.

Space

The space turtle: a position and a heading, left and up frame.

Implementations

impl TurtleMode

pub const ALL: [TurtleMode; 2]

Every mode, in the order the loader names them.

pub fn as_str(self) -> &'static str

The mode as a preset writes it.

pub fn from_name(name: &str) -> Option<Self>

The mode a preset’s spelling names, or None for an unknown one.

Trait Implementations

impl Clone for TurtleMode

fn clone(&self) -> TurtleMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TurtleMode

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

Formats the value using the given formatter.

impl Default for TurtleMode

fn default() -> TurtleMode

Returns the “default value” for a type.

impl PartialEq for TurtleMode

fn eq(&self, other: &TurtleMode) -> 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 Copy for TurtleMode

impl Eq for TurtleMode

impl StructuralPartialEq for TurtleMode