Crate s_expr

source · [−]

Expand description

S-Expressions Parser and Printer

Parser example

use s_expr::{Parser, Element, Span};

let mut parser = Parser::new("(let x 1)");
let r = parser.next().expect("parse data").expect("not end of stream");

let elements = r.inner.paren().expect("paren group");
assert_eq!(elements[0].inner.atom().and_then(|atom| atom.ident()), Some("let"));
assert_eq!(elements[0].span, Span::on_line(1, 1, 4));

Structs

A Bytes literal

Decimal Number (e.g. 1.3)

Integral Number

S-Expr Parser

A file position for human composed of the line (starting at 1), and column (starting a 0)

Simple printer

Span defined by 2 positions, defining a range between start and end

Tokenizer state on the data

TokenizerConfig

Config for the tokenizer, for flags

Enums

Atom literal (Number, Bytes, String, or Ident)

Element of S-Expr

Type of group

Parser Error, which are either token error or some error related to group balancing like unterminated group, or mismatch of group

Tokens

Type Definitions

Spanned Element

A Token with the span (start and end positions) associated