Basic lambdas

schala-lang/language/src/eval.rs

@@ -722,4 +722,15 @@ let z = if c {
 "#;
   test_in_fresh_env!(source, r#"("x", "haha", "NIGH")"#);
   }
+
+  #[test]
+  fn basic_lambda_syntax() {
+    let source = r#"
+let q = \(x, y) { x * y }
+let x = q(5,2)
+let y = \(m, n, o) { m + n + o }(1,2,3)
+(x, y)
+  "#;
+  test_in_fresh_env!(source, r"(10, 6)");
+  }
 }

schala-lang/language/src/reduced_ast.rs

@@ -151,7 +151,11 @@ impl Expression {
 }
 
 fn reduce_lambda(params: &Vec<FormalParam>, body: &Block, symbol_table: &SymbolTable) -> Expr {
-  unimplemented!()
+  Expr::Func(Func::UserDefined {
+    name: None,
+    params: params.iter().map(|param| param.0.clone()).collect(),
+    body: body.iter().map(|stmt| stmt.reduce(symbol_table)).collect(),
+  })
 }
 
 fn reduce_if_expression(discriminator: &Discriminator, body: &IfExpressionBody, symbol_table: &SymbolTable) -> Expr {