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Diffstat (limited to '')
-rw-r--r-- | users/tazjin/rlox/src/interpreter.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/users/tazjin/rlox/src/interpreter.rs b/users/tazjin/rlox/src/interpreter.rs index b59034ea970c..5e2eba02d460 100644 --- a/users/tazjin/rlox/src/interpreter.rs +++ b/users/tazjin/rlox/src/interpreter.rs @@ -5,8 +5,32 @@ use std::collections::HashMap; use std::rc::Rc; use std::sync::RwLock; +// Implementation of built-in functions. +mod builtins; + // Tree-walk interpreter +// Representation of all callables, including builtins & user-defined +// functions. +#[derive(Clone, Debug)] +pub enum Callable { + Builtin(&'static dyn builtins::Builtin), +} + +impl Callable { + fn arity(&self) -> usize { + match self { + Callable::Builtin(builtin) => builtin.arity(), + } + } + + fn call(&self, args: Vec<Value>) -> Result<Value, Error> { + match self { + Callable::Builtin(builtin) => builtin.call(args), + } + } +} + // Representation of an in-language value. #[derive(Clone, Debug)] enum Value { |