1 files changed, 54 insertions, 0 deletions
diff --git a/src/subcmd/renderer.rs b/src/subcmd/renderer.rs
new file mode 100644
index 0000000..99a67f1
--- /dev/null
+++ b/src/subcmd/renderer.rs
@@ -0,0 +1,54 @@
+use std::fmt::{Display, Formatter};
+
+use serde::Serialize;
+
+use crate::subcmd::errors::CmdRenderError;
+
+pub trait JVResultRenderer<Data>
+where
+    Data: Serialize,
+{
+    fn render(
+        data: &Data,
+    ) -> impl Future<Output = Result<JVRenderResult, CmdRenderError>> + Send + Sync;
+}
+
+#[derive(Default, Debug, PartialEq)]
+pub struct JVRenderResult {
+    render_text: String,
+}
+
+impl Display for JVRenderResult {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}\n", self.render_text.trim())
+    }
+}
+
+impl JVRenderResult {
+    pub fn print(&mut self, text: &str) {
+        self.render_text.push_str(text);
+    }
+
+    pub fn println(&mut self, text: &str) {
+        self.render_text.push_str(text);
+        self.render_text.push('\n');
+    }
+
+    pub fn clear(&mut self) {
+        self.render_text.clear();
+    }
+}
+
+#[macro_export]
+macro_rules! r_print {
+    ($result:expr, $($arg:tt)*) => {
+        $result.print(&format!($($arg)*));
+    };
+}
+
+#[macro_export]
+macro_rules! r_println {
+    ($result:expr, $($arg:tt)*) => {
+        $result.println(&format!($($arg)*));
+    };
+}