make let a statement & support parsing for let

2024-05-11 01:19:44 +02:00 · 2024-05-11 01:19:44 +02:00 · e23d8257d0
commit e23d8257d0
parent d7c06d423e
5 changed files with 77 additions and 95 deletions
--- a/src/parser.rs
+++ b/src/parser.rs
@ -66,6 +66,18 @@ where It: Iterator<Item = char>
                            val_expr
                        })
                    }
+                    "let" => {
+                        tokens.next();
+                        let name = parse_symbol(tokens)?;
+                        let _ = parse_expect(tokens, LTIRToken::AssignValue);
+                        let val_expr = parse_expr(tokens)?;
+                        let _ = parse_expect(tokens, LTIRToken::StatementSep)?;
+
+                        Ok(Statement::LetAssign {
+                            var_id: name,
+                            val_expr
+                        })
+                    }
                    "while" => {
                        tokens.next();
                        let _ = parse_expect(tokens, LTIRToken::ExprOpen)?;