Implement list token

src/syntax/content/parser/token/item.rs

@@ -0,0 +1,41 @@
+use crate::syntax::content::{Parseable, Lexeme};
+
+#[derive(Debug, Clone, Eq, PartialEq)]
+pub struct Item {
+    open: bool,
+}
+
+impl Parseable for Item {
+    fn probe(lexeme: &Lexeme) -> bool {
+        (lexeme.match_as_char('-') || lexeme.match_as_char('+'))
+        && lexeme.match_next_as_char(' ')
+    }
+
+    fn lex(_lexeme: &Lexeme) -> Item {
+        Item { open: false }
+    }
+
+    fn render(&self) -> String {
+        if self.open {
+            String::from("<li>")
+        } else {
+            String::from("</li>")
+        }
+    }
+}
+
+impl Item {
+    pub fn new(open: bool) -> Item {
+        Item { open }
+    }
+
+    pub fn probe_end(lexeme: &Lexeme) -> bool {
+        lexeme.match_as_char('\n')
+    }
+}
+
+impl std::fmt::Display for Item {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        write!(f, "Item [{}]", if self.open { "open" } else { "closed" })
+    }
+}