feat(macros): general utility macros

1 files changed, 58 insertions, 0 deletions

diff --git a/crates/germ-macros-impl/src/lib.rs b/crates/germ-macros-impl/src/lib.rs
new file mode 100644
index 0000000..30fdd81
--- /dev/null
+++ b/crates/germ-macros-impl/src/lib.rs
@@ -0,0 +1,58 @@
+// This file is part of Germ <https://github.com/gemrest/germ>.
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// Copyright (C) 2022-2022 Fuwn <[email protected]>
+// SPDX-License-Identifier: GPL-3.0-only
+
+#![deny(
+  warnings,
+  nonstandard_style,
+  unused,
+  future_incompatible,
+  rust_2018_idioms,
+  unsafe_code,
+  clippy::all,
+  clippy::nursery,
+  clippy::pedantic
+)]
+#![feature(proc_macro_hygiene, proc_macro_span)]
+#![recursion_limit = "128"]
+
+use proc_macro::TokenStream;
+
+/// Convert Gemtext into a token tree
+///
+/// # Panics
+///
+/// May panic if the Gemini could not be properly handled, for any reason.
+#[proc_macro]
+pub fn gemini_to_tt(input: TokenStream) -> TokenStream {
+  let mut tokens = input.into_iter();
+  let mut span = tokens.next().unwrap().span();
+
+  for token in tokens {
+    span = span.join(token.span()).unwrap();
+  }
+
+  let gemini = span
+    .source_text()
+    .unwrap()
+    .lines()
+    .map(|l| l.trim_start().to_string())
+    .collect::<Vec<String>>()
+    .join("\n");
+
+  quote::quote!(#gemini).into()
+}