Struct preserves_schema::syntax::block::Formatter

pub struct Formatter {
    pub width: usize,
    pub buffer: String,
    /* private fields */
}

State needed for pretty-formatting of Emittables.

Fields

width: usize

Number of available columns. Used to decide between horizontal and vertical layouts.

buffer: String

Mutable output buffer. Accumulates emitted text during writing.

Implementations

impl Formatter

pub fn new() -> Self

Construct a Formatter using DEFAULT_WIDTH and a four-space indent.

pub fn copy_empty(&self) -> Formatter

Construct a Formatter just like self but with an empty buffer.

pub fn indent_size(self) -> usize

Yields the indent size.

pub fn set_indent_size(&mut self, n: usize)

Updates the indent size.

pub fn write<E: Emittable>(&mut self, e: E)

Accumulates a text serialization of e in buffer.

pub fn newline(&mut self)

Emits a newline followed by indentation into buffer.

pub fn to_string<E: Emittable>(e: E) -> String

Creates a default Formatter, uses it to write e, and yields the contents of its buffer.

pub fn with_indent<R, F: FnOnce(&mut Self) -> R>(&mut self, f: F) -> R

Calls f in a context where the indentation has been increased by Formatter::indent_size spaces. Restores the indentation level after f returns. Yields the result of the call to f.

Trait Implementations

impl Default for Formatter

fn default() -> Self

Returns the “default value” for a type.