pub fn parse<T: Parse>(tokens: TokenStream) -> Result<T>Available on crate features
parsing and proc-macro only.Expand description
Parse tokens of source code into the chosen syntax tree node.
This is preferred over parsing a string because tokens are able to preserve information about where in the user’s code they were originally written (the “span” of the token), possibly allowing the compiler to produce better error messages.
This function parses a proc_macro::TokenStream which is the type used for
interop with the compiler in a procedural macro. To parse a
proc_macro2::TokenStream, use syn::parse2 instead.
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.