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#![doc(html_root_url = "https://docs.rs/syn-error-experiment/0.0.0")]
extern crate proc_macro2;
extern crate syn;
#[cfg(feature = "proc-macro")]
extern crate proc_macro;
#[macro_use]
pub mod token;
#[macro_use]
pub mod parse;
#[macro_use]
mod group;
mod ast;
mod error;
mod lookahead;
pub use ast::*;
pub use proc_macro2::Ident;
#[doc(hidden)]
pub mod export;
use std::str::FromStr;
use proc_macro2::Span;
use syn::buffer::TokenBuffer;
use parse::{Parse, ParseBuffer, Result};
#[cfg(feature = "proc-macro")]
pub fn parse<T: Parse>(input: proc_macro::TokenStream) -> Result<T> {
parse2(proc_macro2::TokenStream::from(input))
}
pub fn parse2<T: Parse>(input: proc_macro2::TokenStream) -> Result<T> {
let buf = TokenBuffer::new2(input);
let state = ParseBuffer::new(Span::call_site(), buf.begin());
T::parse(&state)
}
pub fn parse_str<T: Parse>(input: &str) -> Result<T> {
let tokens = proc_macro2::TokenStream::from_str(input)?;
parse2(tokens)
}
#[cfg(feature = "proc-macro")]
#[macro_export]
macro_rules! parse_macro_input {
($tokenstream:ident as $ty:ty) => {
match $crate::parse::<$ty>($tokenstream) {
$crate::export::Ok(data) => data,
$crate::export::Err(err) => {
return $crate::export::TokenStream::from(err.into_compile_error());
}
};
};
}