29 lines
965 B
Python
29 lines
965 B
Python
import sys
|
|
|
|
def print_error(filename, buf, e):
|
|
assert len(e.args) == 2, e
|
|
message, token = e.args
|
|
lines = buf.splitlines()
|
|
line = lines[token.line - 1]
|
|
|
|
error_name = str(type(e).__name__)
|
|
col_indent = ' ' * token.col
|
|
col_pointer = '^' * len(token.lexeme)
|
|
RED = "\033[0;31m"
|
|
DEFAULT = "\033[0;0m"
|
|
print(f'File: "{filename}", line {token.line}, column {token.col}\n', file=sys.stderr)
|
|
sys.stderr.write(' ')
|
|
wrote_default = False
|
|
for i, c in enumerate(line.decode('utf-8')):
|
|
if i == token.col:
|
|
sys.stderr.write(RED)
|
|
sys.stderr.write(c)
|
|
if i == token.col + len(token.lexeme):
|
|
wrote_default = True
|
|
sys.stderr.write(DEFAULT)
|
|
if not wrote_default:
|
|
sys.stderr.write(DEFAULT)
|
|
sys.stderr.write('\n')
|
|
print(f" {RED}{col_indent}{col_pointer}{DEFAULT}", file=sys.stderr)
|
|
print(f'{RED}{error_name}{DEFAULT}: {message}', file=sys.stderr)
|