Panic on duplicate variable creation

2022-01-04 10:18:53 +01:00
parent df38c66d83
commit 189a57f884
1 changed files with 4 additions and 2 deletions
@@ -81,10 +81,12 @@ fn instruct(statement: Pair<Rule>, state: &mut State, out: &mut Builder) {
        Rule::var => {
            let variable_name = extract_operand(statement);
            println!("Creation of variable '{}'", variable_name);
-            state.variables.insert(
+            if let Some(_v) = state.variables.insert(
                String::from(variable_name),
                MemCell::allocate(state.alloc_cnt),
-            );
+            ) {
+                panic!("Variable {} already exists", variable_name);
+            }
            state.alloc_cnt += 1;
        }
        Rule::delvar => {