WARNING: This crate is no longer maintained. The literal parsing logic in this crate has been moved into
syn 0.12.To get similar behaviour with
syn, parse asyn::Litby callingsyn::parse2::<syn::Lit>(ts)orsyn::parse_str::<syn::Lit>(s).
This crate provides extension methods to proc-macro, and proc-macro2's
Literal types. These methods provide a mechanism for extracting the value of
the type.
Adds a trait with implementations for the types proc_macro2::Literal,
proc_macro::Literal, and DummyLiteral with the following methods for
extracting the value of the type:
pub trait LiteralExt {
/// If the `Literal` is an integer literal, returns its value.
fn parse_int(&self) -> Option<IntLit>;
/// If the `Literal` is a floating point literal, returns its value.
fn parse_float(&self) -> Option<FloatLit>;
/// If the `Literal` is a string literal, returns it's value.
fn parse_string(&self) -> Option<String>;
/// If the `Literal` is a char literal, returns it's value.
fn parse_char(&self) -> Option<char>;
/// If the `Literal` is a byte string literal, returns it's value.
fn parse_bytes(&self) -> Option<Vec<u8>>;
/// If the `Literal` is a byte literal, returns it's value.
fn parse_byte(&self) -> Option<u8>;
/// If the `Literal` is an inner doc comment (`//!` or `/*!`), returns a
/// string with the text of the comment.
fn parse_inner_doc(&self) -> Option<String>;
/// If the `Literal` is an outer doc comment (`///` or `/**`), returns a
/// string with the text of the comment.
fn parse_outer_doc(&self) -> Option<String>;
}-
i128: Add support for interpreting thei128andu128integer types. nightly only -
proc-macro2default: ImplementLiteralExtonproc_macro2::Literal. -
proc-macro: ImplementLiteralExtonproc_macro::Literal. nightly only -
dummy: Export a typeDummyLiteralwith a public constructor which implements theLiteralExttrait.