moved all crates into seperate folder + related path fixes

crates/repl_eval/src/lib.rs

@@ -0,0 +1,57 @@
+use roc_parse::ast::Expr;
+use roc_std::RocDec;
+
+pub mod eval;
+pub mod gen;
+
+pub trait ReplApp<'a> {
+    type Memory: 'a + ReplAppMemory;
+
+    /// Run user code that returns a type with a `Builtin` layout
+    /// Size of the return value is statically determined from its Rust type
+    /// The `transform` callback takes the app's memory and the returned value
+    fn call_function<Return, F>(&self, main_fn_name: &str, transform: F) -> Expr<'a>
+    where
+        F: Fn(&'a Self::Memory, Return) -> Expr<'a>,
+        Self::Memory: 'a;
+
+    /// Run user code that returns a struct or union, whose size is provided as an argument
+    /// The `transform` callback takes the app's memory and the address of the returned value
+    fn call_function_dynamic_size<T, F>(
+        &self,
+        main_fn_name: &str,
+        ret_bytes: usize,
+        transform: F,
+    ) -> T
+    where
+        F: Fn(&'a Self::Memory, usize) -> T,
+        Self::Memory: 'a;
+}
+
+pub trait ReplAppMemory {
+    fn deref_bool(&self, addr: usize) -> bool;
+
+    fn deref_u8(&self, addr: usize) -> u8;
+    fn deref_u16(&self, addr: usize) -> u16;
+    fn deref_u32(&self, addr: usize) -> u32;
+    fn deref_u64(&self, addr: usize) -> u64;
+    fn deref_u128(&self, addr: usize) -> u128;
+    fn deref_usize(&self, addr: usize) -> usize;
+
+    fn deref_i8(&self, addr: usize) -> i8;
+    fn deref_i16(&self, addr: usize) -> i16;
+    fn deref_i32(&self, addr: usize) -> i32;
+    fn deref_i64(&self, addr: usize) -> i64;
+    fn deref_i128(&self, addr: usize) -> i128;
+    fn deref_isize(&self, addr: usize) -> isize;
+
+    fn deref_f32(&self, addr: usize) -> f32;
+    fn deref_f64(&self, addr: usize) -> f64;
+
+    fn deref_dec(&self, addr: usize) -> RocDec {
+        let bits = self.deref_i128(addr);
+        RocDec::new(bits)
+    }
+
+    fn deref_str(&self, addr: usize) -> &str;
+}