Trait `Parser`

trait Parser: Sized

Parser that can parse Rust tokens into a particular syntax tree node.

Refer to the module documentation for details about parsing in Syn.

Associated Types

fn parse2(self: Self, tokens: TokenStream) -> Result<<Self as >::Output>

Parse a proc-macro2 token stream into the chosen syntax tree node.

This function enforces that the input is fully parsed. If there are any unparsed tokens at the end of the stream, an error is returned.

fn parse(self: Self, tokens: proc_macro::TokenStream) -> Result<<Self as >::Output>

Parse tokens of source code into the chosen syntax tree node.

This function enforces that the input is fully parsed. If there are any unparsed tokens at the end of the stream, an error is returned.

fn parse_str(self: Self, s: &str) -> Result<<Self as >::Output>

Parse a string of Rust code into the chosen syntax tree node.

This function enforces that the input is fully parsed. If there are any unparsed tokens at the end of the string, an error is returned.

Every span in the resulting syntax tree will be set to resolve at the macro call site.