parser

src/objects/entity.rs

@@ -0,0 +1,38 @@
+pub struct Entity<'a> {
+    pub name: &'a str,
+    pub contents: Option<&'a str>,
+}
+
+impl<'a> Entity<'a> {
+    pub fn parse(src: &'a str) -> Option<(Entity<'a>, usize)> {
+        expect!(src, 0, b'\\');
+
+        let name = position!(src, 1, |c| !c.is_ascii_alphabetic());
+
+        if src.as_bytes()[name] == b'[' {
+            Some((
+                Entity {
+                    name: &src[1..name],
+                    contents: None,
+                },
+                name,
+            ))
+        } else if src.as_bytes()[name] == b'{' {
+            Some((
+                Entity {
+                    name: &src[1..name],
+                    contents: None,
+                },
+                name,
+            ))
+        } else {
+            Some((
+                Entity {
+                    name: &src[1..name],
+                    contents: None,
+                },
+                name,
+            ))
+        }
+    }
+}