Enum Stmt 

pub enum Stmt {
    Object {
        label: Option<Label>,
        object: Object,
    },
    Place {
        label: Label,
        pos: Position,
    },
    Assign(Vec<Assignment>),
    Direction(Dir),
    Group(Vec<Stmt>),
    Animate(Animate),
    If {
        cond: Expr,
        then_body: Vec<Stmt>,
        else_body: Option<Vec<Stmt>>,
    },
    For {
        var: String,
        from: Expr,
        to: Expr,
        by: Expr,
        mult: bool,
        body: Vec<Stmt>,
    },
    Print(PrintItem),
    Reset(Vec<EnvVar>),
}

A top-level element.

Variants

Object

A drawn object, optionally labelled (Start: box …).

Fields

label: Option<Label>

object: Object

Place

Label: position — names a point without drawing.

Fields

label: Label

pos: Position

Assign(Vec<Assignment>)

One or more comma-separated assignments.

Direction(Dir)

A bare direction change (up / down / left / right).

Group(Vec<Stmt>)

{ … } grouping block (local scope, no bounding object).

Animate(Animate)

rpic animation directive (extension; see Animate).

If

if <cond> then { … } [else { … }].

Fields

cond: Expr

then_body: Vec<Stmt>

else_body: Option<Vec<Stmt>>

For

for v = from to to [by [*] step] do { … }.

Fields

var: String

from: Expr

to: Expr

by: Expr

mult: bool

by * multiplies instead of adds.

body: Vec<Stmt>

Print(PrintItem)

print … (evaluated for diagnostics; no drawing effect).

Reset(Vec<EnvVar>)

reset (all) or reset a, b, … — restore environment variables.

Trait Implementations

impl Clone for Stmt

fn clone(&self) -> Stmt

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Stmt

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

Formats the value using the given formatter.

impl PartialEq for Stmt

fn eq(&self, other: &Stmt) -> 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 StructuralPartialEq for Stmt