update

java/markup/AbstractMarkup.java

@@ -0,0 +1,66 @@
+package markup;
+
+import java.util.List;
+
+/**
+ * @author Nikita Doschennikov (me@fymio.us)
+ */
+public abstract class AbstractMarkup implements Markdown, Html, Tex {
+
+    protected final List<? extends Markup> items;
+    private final String highlightMarkdown;
+    private final String highlightHtml;
+    private final String highlightTexOpen;
+    private final String highlightTexClose;
+
+    protected AbstractMarkup(
+        List<? extends Markup> items,
+        String highlightMarkdown,
+        String highlightHtml,
+        String highlightTexOpen,
+        String highlightTexClose
+    ) {
+        this.items = items;
+        this.highlightMarkdown = highlightMarkdown;
+        this.highlightHtml = highlightHtml;
+        this.highlightTexOpen = highlightTexOpen;
+        this.highlightTexClose = highlightTexClose;
+    }
+
+    @Override
+    public void toMarkdown(StringBuilder sb) {
+        sb.append(highlightMarkdown);
+        for (Markup item : items) {
+            item.toMarkdown(sb);
+        }
+        sb.append(highlightMarkdown);
+    }
+
+    @Override
+    public void toHtml(StringBuilder sb) {
+        if (!highlightHtml.isEmpty()) {
+            sb.append("<").append(highlightHtml).append(">");
+        }
+        for (Markup item : items) {
+            item.toHtml(sb);
+        }
+        if (!highlightHtml.isEmpty()) {
+            sb.append("</").append(highlightHtml).append(">");
+        }
+    }
+
+    @Override
+    public void toTex(StringBuilder sb) {
+        sb.append(highlightTexOpen);
+        for (Markup item : items) {
+            if (item instanceof Text) {
+                ((Text) item).toTex(sb);
+            } else if (item instanceof AbstractMarkup) {
+                ((AbstractMarkup) item).toTex(sb);
+            } else if (item instanceof AbstractList) {
+                ((AbstractList) item).toTex(sb);
+            }
+        }
+        sb.append(highlightTexClose);
+    }
+}