Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "newt"
-version = "0.3.0"
+version = "0.2.0"
 edition = "2021"
 
 [dependencies]

src/lib.rs

@@ -22,55 +22,34 @@ use internal::{
 
 /// The primary trait exposed by this crate. Implement this trait if you would
 /// like to be able to render a type in a template.
-///
-/// NOTE: There are defaults implemented for every method on this trait:
-/// - print: prints nothing
-/// - lookup: always returns None
-/// - has: always returns None
-/// - is_truthy: always returns true
-/// - index: always returns None
-///
-/// You only need to implement the methods whose behaviors you want to change
 pub trait Value: core::fmt::Debug {
 	/// Print this value to the given string.
 	///
 	/// See also [`internal::parse::Print`] and [`internal::vm::ops::Op::ValuePrint`]
-	fn print(&self, out: &mut String) {
+	fn print(&self, out: &mut String);
-		let _ = out;
-	}
 
 	/// Lookup a field name in this value. The returned [`Value`] will be set as
 	/// the current value inside the block.
 	///
 	/// See also [internal::vm::ops::Op::ValueLookup]
-	fn lookup(&self, name: &str) -> Option<&dyn Value> {
+	fn lookup(&self, name: &str) -> Option<&dyn Value>;
-		let _ = name;
-		None
-	}
 
 	/// Like [`Option::map`], but for a value. The returned [`Value`] will be set
 	/// as the current value inside the block.
 	///
 	/// See also [`internal::parse::Has`] and [`internal::vm::ops::Op::ValueHas`]
-	fn has(&self) -> Option<&dyn Value> {
+	fn has(&self) -> Option<&dyn Value>;
-		None
-	}
 
 	/// Check if a value is truthy.
 	///
 	/// See also [`internal::parse::If`] and [`internal::vm::ops::Op::ValueTruthy`]
-	fn is_truthy(&self) -> bool {
+	fn is_truthy(&self) -> bool;
-		true
-	}
 
 	/// Lookup the current index in this value. The returned [`Value`] will be
 	/// set as the current value inside the block.
 	///
 	/// See also [`internal::parse::For`] and [`internal::vm::ops::Op::ValueIndex`]
-	fn index(&self, index: usize) -> Option<&dyn Value> {
+	fn index(&self, index: usize) -> Option<&dyn Value>;
-		let _ = index;
-		None
-	}
 }
 
 macro_rules! value_for_int {