From c619847d4213504ff2fb28a814d32ea642c24287 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Sun, 24 Jul 2022 09:22:04 +0300
Subject: feat: add placeholder for tag directive

Sponsored-by: author
---
 src/directive/mod.rs |  9 +++++++++
 src/directive/tag.rs | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+)
 create mode 100644 src/directive/tag.rs

diff --git a/src/directive/mod.rs b/src/directive/mod.rs
index efdc799..38fb0d3 100644
--- a/src/directive/mod.rs
+++ b/src/directive/mod.rs
@@ -14,6 +14,7 @@ pub enum Directive {
 
     Meta(Meta),
     Img(Img),
+    Tag(Tag),
 }
 
 impl TryFrom<ParsedDirective> for Directive {
@@ -49,6 +50,10 @@ impl TryFrom<ParsedDirective> for Directive {
                 Self::check_args(&p, Meta::REQUIRED, Meta::ALLOWED, Meta::ALLOW_ANY_UNNAMED)?;
                 Directive::Meta(Meta::from(p))
             }
+            "tag" => {
+                Self::check_args(&p, Tag::REQUIRED, Tag::ALLOWED, Tag::ALLOW_ANY_UNNAMED)?;
+                Directive::Tag(Tag::from(p))
+            }
             _ => return Err(SiteError::UnknownDirective(p.name().into())),
         };
         Ok(d)
@@ -97,6 +102,7 @@ impl Directive {
             }
             Self::Img(x) => x.process(site, meta),
             Self::Meta(x) => x.process(site, meta),
+            Self::Tag(x) => x.process(site, meta),
         }
     }
 }
@@ -106,3 +112,6 @@ use meta::Meta;
 
 mod img;
 pub use img::Img;
+
+mod tag;
+use tag::Tag;
diff --git a/src/directive/tag.rs b/src/directive/tag.rs
new file mode 100644
index 0000000..9486a7b
--- /dev/null
+++ b/src/directive/tag.rs
@@ -0,0 +1,32 @@
+use crate::error::SiteError;
+use crate::page::PageMeta;
+use crate::site::Site;
+use crate::wikitext::ParsedDirective;
+
+#[derive(Debug, Eq, PartialEq)]
+pub struct Tag {
+    tags: Vec<String>,
+}
+
+impl Tag {
+    pub const REQUIRED: &'static [&'static str] = &[];
+    pub const ALLOWED: &'static [&'static str] = &["class"];
+    pub const ALLOW_ANY_UNNAMED: bool = true;
+
+    pub fn new(tags: Vec<String>) -> Self {
+        Self {
+            tags,
+        }
+    }
+
+    pub fn process(&self, _site: &Site, _meta: &mut PageMeta) -> Result<String, SiteError> {
+        Ok("".into())
+    }
+}
+
+impl From<ParsedDirective> for Tag {
+    fn from(p: ParsedDirective) -> Self {
+        let tags = p.unnamed_args().iter().map(|s| s.to_string()).collect();
+        Tag::new(tags)
+    }
+}
-- 
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