From 9ec1e00afade95a6e4e2f7bfc06f2f794d1cda96 Mon Sep 17 00:00:00 2001
From: Greg Shuflin <greg.shuflin@protonmail.com>
Date: Sun, 24 Oct 2021 23:05:47 -0700
Subject: [PATCH] Fix bug with assignment precedence

---
 schala-lang/language/src/ast/operators.rs       | 2 +-
 schala-lang/language/src/tree_walk_eval/test.rs | 6 ++----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/schala-lang/language/src/ast/operators.rs b/schala-lang/language/src/ast/operators.rs
index b55d423..5e11830 100644
--- a/schala-lang/language/src/ast/operators.rs
+++ b/schala-lang/language/src/ast/operators.rs
@@ -80,8 +80,8 @@ fn binop_precedences(s: &str) -> i32 {
     "<" =>  20,
     "<=" => 20,
     "==" => 40,
-    "=" =>  10,
     "<=>" => 30,
+    "=" =>  5, // Assignment shoudl have highest precedence
     _ => default,
   }
 }
diff --git a/schala-lang/language/src/tree_walk_eval/test.rs b/schala-lang/language/src/tree_walk_eval/test.rs
index d1bea6f..05ee593 100644
--- a/schala-lang/language/src/tree_walk_eval/test.rs
+++ b/schala-lang/language/src/tree_walk_eval/test.rs
@@ -8,6 +8,7 @@ fn evaluate_input(input: &str) -> Result<String, String> {
   let mut symbol_table = SymbolTable::new();
   symbol_table.process_ast(&ast).unwrap();
   let reduced_ir = crate::reduced_ir::reduce(&ast, &symbol_table);
+  reduced_ir.debug(&symbol_table);
   let mut state = State::new();
   let mut outputs = state.evaluate(reduced_ir, true);
   outputs.pop().unwrap()
@@ -21,10 +22,7 @@ fn eval_assert(input: &str, expected: &str) {
 fn test_basic_eval() {
   eval_assert("1 + 2", "3");
   eval_assert("let mut a = 1; a = 2", "()");
-  /*
-     test_in_fresh_env!("let mut a = 1; a = 2; a", "2");
-     test_in_fresh_env!(r#"("a", 1 + 2)"#, r#"("a", 3)"#);
-     */
+  eval_assert("let mut a = 1; a = a + 2; a", "3");
 }
 
 #[test]