factor out serde2

serde2/src/bin.rs

@@ -0,0 +1,119 @@
+extern crate serde2;
+
+use std::io;
+use std::collections::TreeMap;
+use serde2::{Serialize, FormatState, GatherTokens};
+
+///////////////////////////////////////////////////////////////////////////////
+
+struct Foo {
+    x: int,
+    y: int,
+    z: &'static str,
+}
+
+impl<S: serde2::SerializeState<R>, R> serde2::Serialize<S, R> for Foo {
+    fn serialize(&self, state: &mut S) -> R {
+        state.serialize_struct("Foo", FooSerialize {
+            value: self,
+            state: 0,
+        })
+    }
+}
+
+struct FooSerialize<'a> {
+    value: &'a Foo,
+    state: uint,
+}
+
+impl<'a, S: serde2::SerializeState<R>, R> serde2::Visitor<S, R> for FooSerialize<'a> {
+    fn visit(&mut self, state: &mut S) -> Option<R> {
+        match self.state {
+            0 => {
+                self.state += 1;
+                Some(state.serialize_map_elt(true, "x", &self.value.x))
+            }
+            1 => {
+                self.state += 1;
+                Some(state.serialize_map_elt(false, "y", &self.value.y))
+            }
+            2 => {
+                self.state += 1;
+                Some(state.serialize_map_elt(false, "z", &self.value.z))
+            }
+            _ => {
+                None
+            }
+        }
+    }
+
+    fn size_hint(&self) -> (uint, Option<uint>) {
+        let size = 3 - self.state;
+        (size, Some(size))
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+fn main() {
+    let value = 5i;
+
+    let mut s = GatherTokens::new();
+    value.serialize(&mut s);
+    println!("tokens: {}", s.unwrap());
+
+    value.serialize(&mut FormatState::new(io::stdout())).unwrap();
+    println!("");
+
+    ////
+
+    let value = vec!(1i, 2, 3);
+
+    let mut s = GatherTokens::new();
+    value.serialize(&mut s);
+    println!("tokens: {}", s.unwrap());
+
+    value.serialize(&mut FormatState::new(io::stdout())).unwrap();
+    println!("");
+
+    ////
+
+    let mut value = TreeMap::new();
+    value.insert("a", 1i);
+    value.insert("b", 2);
+    value.insert("c", 3);
+
+    let mut s = GatherTokens::new();
+    value.serialize(&mut s);
+    println!("tokens: {}", s.unwrap());
+
+    value.serialize(&mut FormatState::new(io::stdout())).unwrap();
+    println!("");
+
+    ////
+
+    /*
+    println!("{}", to_format_vec(&5i));
+    println!("{}", to_format_string(&5i));
+    */
+
+    let value = Foo { x: 1, y: 2, z: "abc" };
+
+    let mut s = GatherTokens::new();
+    value.serialize(&mut s);
+    println!("tokens: {}", s.unwrap());
+
+    value.serialize(&mut FormatState::new(io::stdout())).unwrap();
+    println!("");
+
+    ////
+
+    let value = (1i, "abc");
+
+    let mut s = GatherTokens::new();
+    value.serialize(&mut s);
+    println!("tokens: {}", s.unwrap());
+
+    value.serialize(&mut FormatState::new(io::stdout())).unwrap();
+    println!("");
+}