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authorFrederick Yin <fkfd@fkfd.me>2022-08-31 17:08:38 +0800
committerFrederick Yin <fkfd@fkfd.me>2022-08-31 17:08:38 +0800
commit1328887bb78ba034fe3d496ad8029382c1ec678e (patch)
treef3b47fc3abaf9094184deacee3cae47317a2f0bd /projects/hackc
parent482eed0ae339e977a618c4ab60525596426cf967 (diff)
hackc: Parser handles IndexError
Diffstat (limited to 'projects/hackc')
-rw-r--r--projects/hackc/classes.py2
-rw-r--r--projects/hackc/parser.py6
-rw-r--r--projects/hackc/utils.py1
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 = "{"