toon_codec/encode/writer

Line writer for building TOON output with proper indentation.

This internal module provides an opaque Writer type that accumulates lines with automatic indentation formatting. Opaque type for building lines with indentation. Create a new writer with the specified indentation size.

Examples

let writer = new(2)

Add a line at the specified depth.

The depth is multiplied by indent_size to calculate the indentation.

Examples

let writer = new(2)
let writer = push(writer, 0, "name: Alice")
let writer = push(writer, 1, "id: 123")

Convert the writer to a final string output.

Lines are reversed (since they were accumulated in reverse order) and joined with newlines. No trailing newline is added.

Examples

let writer = new(2)
let writer = push(writer, 0, "name: Alice")
let writer = push(writer, 1, "id: 123")
to_string(writer)
// -> "name: Alice\n  id: 123"

Check if the writer is empty (has no lines). Get the number of lines in the writer.

pub opaque type Writer

pub fn is_empty(writer: Writer) -> Bool

pub fn line_count(writer: Writer) -> Int

pub fn new(indent_size: Int) -> Writer

pub fn push(writer: Writer, depth: Int, line: String) -> Writer

pub fn to_string(writer: Writer) -> String