Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!
Useful Crates for Macro Development¶
syn¶
Syn is a parsing library for parsing a stream of Rust tokens into a syntax tree of Rust source code.
quote¶
Quote
provides the quote! macro
for turning Rust syntax tree data structures into tokens of source code.
proc-macro2¶
proc-macro2
is a substitute implementation of the compiler's proc_macro API
to decouple token-based libraries from the procedural macro use case.
syntactic-for¶
syntactic-for provides a syntactic "for" loop Rust macro.
Declarative Macros¶
In [ ]:
macro_rules! add{
($a:expr,$b:expr)=>{{
$a+$b
}}
}
In [ ]:
add!(2, 3)
In [ ]: