Struct TestSymbols 

pub struct TestSymbols;

A set of symbols where every symbol is either whitespace ( ) or an empty string.

Example

StmtKind::Var
  declarations=
    Var
      name: "x"
      kind: Let
      initializer: ExprKind::Binary
        op: Add
        left: Lit
          token: "1"
          value: LitValue::Integer(1)
        right: Lit
          token: "2.3"
          value: LitValue::Float(2.3)
      n_uses: 0
StmtKind::Print
  value: ExprKind::Comma
    operands=
      Lit
        token: "\"hello, world!\""
        value: LitValue::Str("hello, world!")
      ExprKind::Variable
        name: "x"

Trait Implementations

impl Symbols for TestSymbols

fn description(&self) -> &'static str

Used by the debug impl for &dyn Symbols.

fn horizontal_bar(&self) -> &'static str

The horizontal bar symbol used to draw horizontal tree branches, e.g. ─.

fn vertical_bar(&self) -> &'static str

The vertical bar symbol used to draw the tree trunks of the tree and its subtrees, e.g. │.

fn right_branch(&self) -> &'static str

A piece of trunk with a branch to the right, e.g. ├.

fn indent(&self) -> &'static str

A single indentation symbol, e.g. .

fn left_upper_corner(&self) -> &'static str

The symbol for left upper corners, e.g. ╭.

fn left_bottom_corner(&self) -> &'static str

The symbol for left bottom corners, e.g. ╰.

fn right_upper_corner(&self) -> &'static str

The symbol for right upper corners, e.g. ╮.

fn right_bottom_corner(&self) -> &'static str

The symbol for right bottom corners, e.g. ╯.

fn missing_items_symbol(&self) -> &'static str

The symbol to display when a list of items is empty, e.g. ✕.

fn item_list_symbol(&self) -> &'static str

The symbol to display when a list of items is non-empty, e.g. ↓.