Struct Parser

pub struct Parser { /* private fields */ }

A regular expression parser.

This parses a string representation of a regular expression into an abstract syntax tree. The size of the tree is proportional to the length of the regular expression pattern.

A Parser can be configured in more detail via a ParserBuilder.

Implementations

impl Parser

pub fn new() -> Parser

Create a new parser with a default configuration.

The parser can be run with either the parse or parse_with_comments methods. The parse methods return an abstract syntax tree.

To set configuration options on the parser, use ParserBuilder.

pub fn parse(&mut self, pattern: &str) -> Result<Ast, Error>

Parse the regular expression into an abstract syntax tree.

pub fn parse_with_comments( &mut self, pattern: &str, ) -> Result<WithComments, Error>

Parse the regular expression and return an abstract syntax tree with all of the comments found in the pattern.

Trait Implementations

impl Clone for Parser

fn clone(&self) -> Parser

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Parser

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

Formats the value using the given formatter.