Add dbg_and_swallow macro to example

LukasKalbertodt · Mar 5, 2023 · 3f2d3ee · 3f2d3ee
1 parent 612c815
commit 3f2d3ee
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diff --git a/examples/procmacro/examples/main.rs b/examples/procmacro/examples/main.rs
@@ -1,4 +1,4 @@
-use procmacro_example::{concat, repeat};
+use procmacro_example::{concat, dbg_and_swallow, repeat};
 
 const FOO: &str = concat!(r#"Hello "# '🦊' "\nHere is a friend: \u{1F427}");
 // const FOO: &str = concat!(::);
@@ -8,6 +8,7 @@ const BAR: &str = repeat!(3 * "నా పిల్లి లావుగా ఉ
 const BAZ: &str = repeat!(0b101 * "🦀");
 // const BAZ: &str = repeat!(3.5 * "🦀");
 
+dbg_and_swallow!(16px);
 
 fn main() {
     println!("{}", FOO);

diff --git a/examples/procmacro/src/lib.rs b/examples/procmacro/src/lib.rs
@@ -3,6 +3,14 @@ use proc_macro::{Spacing, TokenStream, TokenTree};
 use litrs::{Literal, IntegerLit, StringLit};
 
 
+#[proc_macro]
+pub fn dbg_and_swallow(input: TokenStream) -> TokenStream {
+    for token in input {
+        println!("{} -> {:#?}", token, Literal::try_from(&token));
+    }
+    TokenStream::new()
+}
+
 /// Concatinates all input string and char literals into a single output string
 /// literal.
 #[proc_macro]