From 1328887bb78ba034fe3d496ad8029382c1ec678e Mon Sep 17 00:00:00 2001
From: Frederick Yin <fkfd@fkfd.me>
Date: Wed, 31 Aug 2022 17:08:38 +0800
Subject: hackc: Parser handles IndexError

---
 projects/hackc/classes.py | 2 --
 projects/hackc/parser.py  | 6 ++++++
 projects/hackc/utils.py   | 1 +
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/projects/hackc/classes.py b/projects/hackc/classes.py
index a8d446a..b300d98 100644
--- a/projects/hackc/classes.py
+++ b/projects/hackc/classes.py
@@ -61,8 +61,6 @@ class Class:
             subroutines.append(subroutine)
             t += dt
 
-        if t == tokens_total:
-            raise JackSyntaxError(f"Class {self.name} ends unexpectedly", tokens[-1])
         end = tokens[t]
         if end != RIGHT_BRACE:
             raise JackSyntaxError(
diff --git a/projects/hackc/parser.py b/projects/hackc/parser.py
index 8375d52..188bddc 100644
--- a/projects/hackc/parser.py
+++ b/projects/hackc/parser.py
@@ -102,3 +102,9 @@ class Parser:
             print_err(self.lines[err.token.line_no])
             print_err(" " * err.token.column + "^ " + err.message)
             exit(EXIT_CODE_SYNTAX_ERROR)
+        except IndexError:
+            last_line = self.lines[-1]
+            print_err(f"{self._fp}:{len(self.lines)}")
+            print_err(last_line)
+            print_err(" " * len(last_line) + "^ Unexpected EOF")
+            exit(EXIT_CODE_EOF)
diff --git a/projects/hackc/utils.py b/projects/hackc/utils.py
index 4b9c9f0..58888ac 100644
--- a/projects/hackc/utils.py
+++ b/projects/hackc/utils.py
@@ -3,6 +3,7 @@ from sys import stderr
 EXIT_CODE_FILE_ERROR = 1
 EXIT_CODE_INVALID_TOKEN = 2
 EXIT_CODE_SYNTAX_ERROR = 4
+EXIT_CODE_EOF = 7
 
 # vim autoindent misbehaves if I type these verbatim in strings
 LEFT_BRACE = "{"
-- 
cgit v1.2.3