Parse out the pathreg on regular links.

org_mode_samples/object/regular_link/code_ref_link.org

@@ -1 +1,9 @@
 [[(foo)]]
+
+[[((bar))]]
+
+[[((baz)]]
+
+# These become fuzzy
+[[(foo) ]]
+[[ (foo)]]

src/parser/regular_link.rs

@@ -3,8 +3,15 @@ use nom::bytes::complete::escaped;
 use nom::bytes::complete::tag;
 use nom::bytes::complete::take_till1;
 use nom::character::complete::anychar;
+use nom::combinator::consumed;
+use nom::combinator::eof;
+use nom::combinator::map_parser;
+use nom::combinator::peek;
+use nom::combinator::recognize;
+use nom::combinator::rest;
 use nom::combinator::verify;
 use nom::multi::many_till;
+use nom::sequence::tuple;
 
 use super::object_parser::regular_link_description_set_object;
 use super::org_source::OrgSource;
@@ -17,6 +24,7 @@ use crate::context::ExitClass;
 use crate::context::ExitMatcherNode;
 use crate::context::RefContext;
 use crate::error::Res;
+use crate::types::LinkType;
 use crate::types::Object;
 use crate::types::RegularLink;
 
@@ -37,7 +45,7 @@ fn regular_link_without_description<'b, 'g, 'r, 's>(
     input: OrgSource<'s>,
 ) -> Res<OrgSource<'s>, RegularLink<'s>> {
     let (remaining, _opening_bracket) = tag("[[")(input)?;
-    let (remaining, _path) = pathreg(context, remaining)?;
+    let (remaining, path) = pathreg(context, remaining)?;
     let (remaining, _closing_bracket) = tag("]]")(remaining)?;
     let (remaining, _trailing_whitespace) =
         maybe_consume_object_trailing_whitespace_if_not_exiting(context, remaining)?;
@@ -46,9 +54,9 @@ fn regular_link_without_description<'b, 'g, 'r, 's>(
         remaining,
         RegularLink {
             source: source.into(),
-            link_type: todo!(),
-            path: todo!(),
-            raw_link: todo!(),
+            link_type: path.link_type,
+            path: path.path,
+            raw_link: path.raw_link,
         },
     ))
 }
@@ -59,7 +67,7 @@ fn regular_link_with_description<'b, 'g, 'r, 's>(
     input: OrgSource<'s>,
 ) -> Res<OrgSource<'s>, RegularLink<'s>> {
     let (remaining, _opening_bracket) = tag("[[")(input)?;
-    let (remaining, _path) = pathreg(context, remaining)?;
+    let (remaining, path) = pathreg(context, remaining)?;
     let (remaining, _closing_bracket) = tag("][")(remaining)?;
     let (remaining, _description) = description(context, remaining)?;
     let (remaining, _closing_bracket) = tag("]]")(remaining)?;
@@ -70,29 +78,112 @@ fn regular_link_with_description<'b, 'g, 'r, 's>(
         remaining,
         RegularLink {
             source: source.into(),
-            link_type: todo!(),
-            path: todo!(),
-            raw_link: todo!(),
+            link_type: path.link_type,
+            path: path.path,
+            raw_link: path.raw_link,
         },
     ))
 }
 
+struct PathReg<'s> {
+    link_type: LinkType<'s>,
+    path: &'s str,
+    raw_link: &'s str,
+}
+
 #[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
 fn pathreg<'b, 'g, 'r, 's>(
     _context: RefContext<'b, 'g, 'r, 's>,
     input: OrgSource<'s>,
-) -> Res<OrgSource<'s>, OrgSource<'s>> {
-    let (remaining, path) = escaped(
+) -> Res<OrgSource<'s>, PathReg<'s>> {
+    let (remaining, path) = map_parser(
+        escaped(
             take_till1(|c| match c {
                 '\\' | '[' | ']' => true,
                 _ => false,
             }),
             '\\',
             anychar,
+        ),
+        parse_path_reg,
     )(input)?;
     Ok((remaining, path))
 }
 
+fn parse_path_reg<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, PathReg<'s>> {
+    alt((
+        file_path_reg,
+        id_path_reg,
+        custom_id_path_reg,
+        code_ref_path_reg,
+        fuzzy_path_reg,
+    ))(input)
+}
+
+fn file_path_reg<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, PathReg<'s>> {
+    let (remaining, (raw_link, (_, path))) = consumed(tuple((tag("file:"), rest)))(input)?;
+    Ok((
+        remaining,
+        PathReg {
+            link_type: LinkType::File,
+            path: path.into(),
+            raw_link: raw_link.into(),
+        },
+    ))
+}
+
+fn id_path_reg<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, PathReg<'s>> {
+    let (remaining, (raw_link, (_, path))) = consumed(tuple((tag("id:"), rest)))(input)?;
+    Ok((
+        remaining,
+        PathReg {
+            link_type: LinkType::Id,
+            path: path.into(),
+            raw_link: raw_link.into(),
+        },
+    ))
+}
+
+fn custom_id_path_reg<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, PathReg<'s>> {
+    let (remaining, (raw_link, (_, path))) = consumed(tuple((tag("#"), rest)))(input)?;
+    Ok((
+        remaining,
+        PathReg {
+            link_type: LinkType::CustomId,
+            path: path.into(),
+            raw_link: raw_link.into(),
+        },
+    ))
+}
+
+fn code_ref_path_reg<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, PathReg<'s>> {
+    let (remaining, (raw_link, (_, path, _))) = consumed(tuple((
+        tag("("),
+        recognize(many_till(anychar, peek(tuple((tag(")"), eof))))),
+        tag(")"),
+    )))(input)?;
+    Ok((
+        remaining,
+        PathReg {
+            link_type: LinkType::CodeRef,
+            path: path.into(),
+            raw_link: raw_link.into(),
+        },
+    ))
+}
+
+fn fuzzy_path_reg<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, PathReg<'s>> {
+    let (remaining, body) = rest(input)?;
+    Ok((
+        remaining,
+        PathReg {
+            link_type: LinkType::Fuzzy,
+            path: body.into(),
+            raw_link: body.into(),
+        },
+    ))
+}
+
 #[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
 fn description<'b, 'g, 'r, 's>(
     context: RefContext<'b, 'g, 'r, 's>,

src/types/mod.rs

@@ -75,6 +75,7 @@ pub use object::InlineSourceBlock;
 pub use object::Italic;
 pub use object::LatexFragment;
 pub use object::LineBreak;
+pub use object::LinkType;
 pub use object::Minute;
 pub use object::MinuteInner;
 pub use object::Month;

src/types/object.rs

@@ -77,7 +77,7 @@ pub struct PlainText<'s> {
 #[derive(Debug, PartialEq)]
 pub struct RegularLink<'s> {
     pub source: &'s str,
-    pub link_type: &'s str,
+    pub link_type: LinkType<'s>,
     pub path: &'s str,
     pub raw_link: &'s str,
 }
@@ -638,3 +638,13 @@ impl<'s> Timestamp<'s> {
         self.source.trim_end()
     }
 }
+
+#[derive(Debug, PartialEq)]
+pub enum LinkType<'s> {
+    File,
+    Protocol(&'s str),
+    Id,
+    CustomId,
+    CodeRef,
+    Fuzzy,
+}