Add render stage for text markup.

src/context/strike_through.rs

@@ -6,11 +6,37 @@ use crate::config::Config;
 use crate::error::CustomError;
 use crate::intermediate::IStrikeThrough;
 
-use super::macros::rnoop;
+use super::macros::render;
+use super::RenderObject;
 
 #[derive(Debug, Serialize)]
 #[serde(tag = "type")]
 #[serde(rename = "strike_through")]
-pub(crate) struct RenderStrikeThrough {}
+pub(crate) struct RenderStrikeThrough {
+    children: Vec<RenderObject>,
+}
 
-rnoop!(RenderStrikeThrough, IStrikeThrough);
+render!(
+    RenderStrikeThrough,
+    IStrikeThrough,
+    original,
+    config,
+    output_directory,
+    output_file,
+    {
+        let children = {
+            let mut ret = Vec::new();
+            for obj in original.children.iter() {
+                ret.push(RenderObject::new(
+                    config,
+                    output_directory,
+                    output_file,
+                    obj,
+                )?);
+            }
+            ret
+        };
+
+        Ok(RenderStrikeThrough { children })
+    }
+);