Add configuration options

src/syntax/content/elements/header.rs

@@ -26,7 +26,7 @@ impl Display for Level {
     }
 }
 
-pub(in crate::syntax::content) struct Header {
+pub struct Header {
     level: Level,
     text: String,
 }
@@ -70,6 +70,7 @@ impl Parseable for Header {
         format!("<h{}>{}</h{0}>", &self.level, self.text)
     }
 }
+
 impl Display for Header {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         write!(f, "Level {} Header: <{}>", &self.level, self.text)

src/syntax/content/elements/span.rs

@@ -0,0 +1,28 @@
+use std::fmt::Display;
+use crate::syntax::content::{Parseable, Lexeme};
+
+pub struct Span {
+    text: String,
+}
+
+impl Parseable for Span {
+    fn probe(lexeme: &Lexeme) -> bool {
+        !lexeme.raw.trim().is_empty()
+    }
+
+    fn lex(lexeme: &Lexeme) -> Self {
+        Self {
+            text: lexeme.raw.trim().to_owned(),
+        }
+    }
+
+    fn render(&self) -> String {
+        format!("<span>{}</span>", &self.text)
+    }
+}
+
+impl Display for Span {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        write!(f, "Span: <{}>", &self.text)
+    }
+}