Struct ParsedFormat 

pub struct ParsedFormat { /* private fields */ }

Pre-parsed format string cached on the Printf node. The #[polydat_node] macro invokes parse_format once at construction; eval reads the segments directly with no per-call parsing.

Implementations

impl ParsedFormat

pub fn from_format_str(fmt: &str) -> Self

Setup-fn for #[poly_const(...)]: parse a format string into a list of segments. Called once at node construction; the resulting ParsedFormat is cached on the struct field and borrowed by every eval call.

pub fn interned(fmt: &str) -> &'static ParsedFormat

The parsed form of a format string, interned for the process so the same text parses once. Immutable once made, like a static string.

pub fn render_with<'a>( &self, argc: usize, arg: impl Fn(usize) -> FmtArg<'a>, ) -> String

Render the format over argc arguments fetched by index. Panics, as the node always has, when a placeholder names an argument that was not supplied.

pub fn render_into<'a, W: Write>( &self, argc: usize, arg: impl Fn(usize) -> FmtArg<'a>, out: &mut W, )

Render into any text sink.

Trait Implementations

impl Clone for ParsedFormat

fn clone(&self) -> ParsedFormat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParsedFormat

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

Formats the value using the given formatter.

impl PolydatSetup for ParsedFormat