From ecf0ff4d054f11c79ec0ddbbdf45f3dfcf9fc8d7 Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Wed, 23 Oct 2019 00:14:43 +0200
Subject: =?UTF-8?q?Introduce=20a=20set=20of=20macros=20for=20writing=20fun?=
 =?UTF-8?q?ctions=20more=20concisely=20=F0=9F=8E=81?=
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---
 src/library/style.rs | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 src/library/style.rs

(limited to 'src/library/style.rs')

diff --git a/src/library/style.rs b/src/library/style.rs
new file mode 100644
index 00000000..397375a4
--- /dev/null
+++ b/src/library/style.rs
@@ -0,0 +1,39 @@
+use crate::func::prelude::*;
+use toddle::query::FontClass;
+
+macro_rules! stylefunc {
+    ($ident:ident) => {
+        /// Styles text.
+        #[derive(Debug, PartialEq)]
+        pub struct $ident {
+            body: Option<SyntaxTree>
+        }
+
+        function! {
+            data: $ident,
+
+            parse(args, body, ctx) {
+                args.done()?;
+                Ok($ident { body: parse!(optional: body, ctx) })
+            }
+
+            layout(this, ctx) {
+                let mut new_style = ctx.style.clone();
+                new_style.toggle_class(FontClass::$ident);
+
+                Ok(match &this.body {
+                    Some(body) => commands![
+                        Command::SetStyle(new_style),
+                        Command::Layout(body),
+                        Command::SetStyle(ctx.style.clone()),
+                    ],
+                    None => commands![Command::SetStyle(new_style)]
+                })
+            }
+        }
+    };
+}
+
+stylefunc!(Italic);
+stylefunc!(Bold);
+stylefunc!(Monospace);
-- 
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