From 4d20badb243c2ae57b8b54d0c5e025b43957dd8f Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Fri, 5 Aug 2022 22:44:40 +0300
Subject: feat: placeholder for toc directive

Sponsored-by: author
---
 src/directive/mod.rs |  9 +++++++++
 src/directive/toc.rs | 27 +++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 src/directive/toc.rs

diff --git a/src/directive/mod.rs b/src/directive/mod.rs
index 59c352c..0767c9d 100644
--- a/src/directive/mod.rs
+++ b/src/directive/mod.rs
@@ -17,6 +17,7 @@ pub enum Directive {
     Inline(Inline),
     PageStats(PageStats),
     Tag(Tag),
+    Toc(Toc),
 }
 
 impl TryFrom<ParsedDirective> for Directive {
@@ -64,6 +65,10 @@ impl TryFrom<ParsedDirective> for Directive {
                 Self::check_args(&p, Tag::REQUIRED, Tag::ALLOWED, Tag::ALLOW_ANY_UNNAMED)?;
                 Directive::Tag(Tag::from(p))
             }
+            "toc" => {
+                Self::check_args(&p, Toc::REQUIRED, Toc::ALLOWED, Toc::ALLOW_ANY_UNNAMED)?;
+                Directive::Toc(Toc::from(p))
+            }
             _ => return Err(SiteError::UnknownDirective(p.name().into())),
         };
         Ok(d)
@@ -115,6 +120,7 @@ impl Directive {
             Self::Meta(x) => x.process(site, meta),
             Self::PageStats(x) => x.process(site, meta),
             Self::Tag(x) => x.process(site, meta),
+            Self::Toc(x) => x.process(site, meta),
         }
     }
 }
@@ -133,3 +139,6 @@ pub use pagestats::PageStats;
 
 mod tag;
 use tag::Tag;
+
+mod toc;
+use toc::Toc;
diff --git a/src/directive/toc.rs b/src/directive/toc.rs
new file mode 100644
index 0000000..6db46d2
--- /dev/null
+++ b/src/directive/toc.rs
@@ -0,0 +1,27 @@
+use crate::error::SiteError;
+use crate::page::PageMeta;
+use crate::site::Site;
+use crate::wikitext::ParsedDirective;
+
+#[derive(Debug, Default, Eq, PartialEq)]
+pub struct Toc {}
+
+impl Toc {
+    pub const REQUIRED: &'static [&'static str] = &[];
+    pub const ALLOWED: &'static [&'static str] = &["levels"];
+    pub const ALLOW_ANY_UNNAMED: bool = true;
+
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn process(&self, _site: &Site, _meta: &mut PageMeta) -> Result<String, SiteError> {
+        Ok("FIXME:inline".into())
+    }
+}
+
+impl From<ParsedDirective> for Toc {
+    fn from(_p: ParsedDirective) -> Self {
+        Self::new()
+    }
+}
-- 
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