initial

src/output.rs

@@ -0,0 +1,33 @@
+// output trait and some possibilities for outputs
+pub trait Output {
+    fn write(&mut self, data : &str);
+}
+
+
+pub struct DummyOutput {
+    out : String
+}
+
+
+impl Output for DummyOutput {
+    fn write(&mut self, data : &str) {
+        self.out += data;
+    }
+}
+
+
+impl DummyOutput {
+    pub fn print(&mut self) {
+        println!("{}", self.out);
+    }
+
+    pub fn spool(self) -> String {
+        self.out
+    }
+
+    pub fn new() -> DummyOutput {
+        DummyOutput {
+            out : String::new()
+        }
+    }
+}