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1567 lines
60 KiB
Python
1567 lines
60 KiB
Python
from test import support
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from tokenize import (tokenize, _tokenize, untokenize, NUMBER, NAME, OP,
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STRING, ENDMARKER, ENCODING, tok_name, detect_encoding,
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open as tokenize_open, Untokenizer)
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from io import BytesIO
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from unittest import TestCase, mock
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import os
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import token
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class TokenizeTest(TestCase):
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# Tests for the tokenize module.
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# The tests can be really simple. Given a small fragment of source
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# code, print out a table with tokens. The ENDMARKER is omitted for
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# brevity.
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def check_tokenize(self, s, expected):
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# Format the tokens in s in a table format.
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# The ENDMARKER is omitted.
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result = []
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f = BytesIO(s.encode('utf-8'))
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for type, token, start, end, line in tokenize(f.readline):
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if type == ENDMARKER:
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break
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type = tok_name[type]
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result.append(f" {type:10} {token!r:13} {start} {end}")
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self.assertEqual(result,
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[" ENCODING 'utf-8' (0, 0) (0, 0)"] +
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expected.rstrip().splitlines())
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def test_basic(self):
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self.check_tokenize("1 + 1", """\
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NUMBER '1' (1, 0) (1, 1)
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OP '+' (1, 2) (1, 3)
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NUMBER '1' (1, 4) (1, 5)
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""")
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self.check_tokenize("if False:\n"
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" # NL\n"
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" True = False # NEWLINE\n", """\
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NAME 'if' (1, 0) (1, 2)
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NAME 'False' (1, 3) (1, 8)
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OP ':' (1, 8) (1, 9)
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NEWLINE '\\n' (1, 9) (1, 10)
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COMMENT '# NL' (2, 4) (2, 8)
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NL '\\n' (2, 8) (2, 9)
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INDENT ' ' (3, 0) (3, 4)
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NAME 'True' (3, 4) (3, 8)
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OP '=' (3, 9) (3, 10)
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NAME 'False' (3, 11) (3, 16)
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COMMENT '# NEWLINE' (3, 17) (3, 26)
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NEWLINE '\\n' (3, 26) (3, 27)
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DEDENT '' (4, 0) (4, 0)
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""")
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indent_error_file = b"""\
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def k(x):
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x += 2
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x += 5
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"""
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readline = BytesIO(indent_error_file).readline
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with self.assertRaisesRegex(IndentationError,
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"unindent does not match any "
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"outer indentation level"):
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for tok in tokenize(readline):
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pass
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def test_int(self):
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# Ordinary integers and binary operators
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self.check_tokenize("0xff <= 255", """\
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NUMBER '0xff' (1, 0) (1, 4)
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OP '<=' (1, 5) (1, 7)
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NUMBER '255' (1, 8) (1, 11)
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""")
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self.check_tokenize("0b10 <= 255", """\
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NUMBER '0b10' (1, 0) (1, 4)
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OP '<=' (1, 5) (1, 7)
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NUMBER '255' (1, 8) (1, 11)
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""")
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self.check_tokenize("0o123 <= 0O123", """\
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NUMBER '0o123' (1, 0) (1, 5)
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OP '<=' (1, 6) (1, 8)
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NUMBER '0O123' (1, 9) (1, 14)
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""")
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self.check_tokenize("1234567 > ~0x15", """\
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NUMBER '1234567' (1, 0) (1, 7)
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OP '>' (1, 8) (1, 9)
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OP '~' (1, 10) (1, 11)
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NUMBER '0x15' (1, 11) (1, 15)
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""")
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self.check_tokenize("2134568 != 1231515", """\
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NUMBER '2134568' (1, 0) (1, 7)
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OP '!=' (1, 8) (1, 10)
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NUMBER '1231515' (1, 11) (1, 18)
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""")
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self.check_tokenize("(-124561-1) & 200000000", """\
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OP '(' (1, 0) (1, 1)
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OP '-' (1, 1) (1, 2)
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NUMBER '124561' (1, 2) (1, 8)
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OP '-' (1, 8) (1, 9)
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NUMBER '1' (1, 9) (1, 10)
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OP ')' (1, 10) (1, 11)
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OP '&' (1, 12) (1, 13)
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NUMBER '200000000' (1, 14) (1, 23)
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""")
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self.check_tokenize("0xdeadbeef != -1", """\
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NUMBER '0xdeadbeef' (1, 0) (1, 10)
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OP '!=' (1, 11) (1, 13)
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OP '-' (1, 14) (1, 15)
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NUMBER '1' (1, 15) (1, 16)
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""")
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self.check_tokenize("0xdeadc0de & 12345", """\
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NUMBER '0xdeadc0de' (1, 0) (1, 10)
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OP '&' (1, 11) (1, 12)
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NUMBER '12345' (1, 13) (1, 18)
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""")
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self.check_tokenize("0xFF & 0x15 | 1234", """\
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NUMBER '0xFF' (1, 0) (1, 4)
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OP '&' (1, 5) (1, 6)
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NUMBER '0x15' (1, 7) (1, 11)
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OP '|' (1, 12) (1, 13)
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NUMBER '1234' (1, 14) (1, 18)
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""")
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def test_long(self):
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# Long integers
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self.check_tokenize("x = 0", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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NUMBER '0' (1, 4) (1, 5)
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""")
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self.check_tokenize("x = 0xfffffffffff", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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NUMBER '0xfffffffffff' (1, 4) (1, 17)
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""")
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self.check_tokenize("x = 123141242151251616110", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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NUMBER '123141242151251616110' (1, 4) (1, 25)
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""")
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self.check_tokenize("x = -15921590215012591", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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OP '-' (1, 4) (1, 5)
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NUMBER '15921590215012591' (1, 5) (1, 22)
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""")
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def test_float(self):
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# Floating point numbers
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self.check_tokenize("x = 3.14159", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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NUMBER '3.14159' (1, 4) (1, 11)
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""")
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self.check_tokenize("x = 314159.", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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NUMBER '314159.' (1, 4) (1, 11)
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""")
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self.check_tokenize("x = .314159", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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NUMBER '.314159' (1, 4) (1, 11)
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""")
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self.check_tokenize("x = 3e14159", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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NUMBER '3e14159' (1, 4) (1, 11)
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""")
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self.check_tokenize("x = 3E123", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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NUMBER '3E123' (1, 4) (1, 9)
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""")
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self.check_tokenize("x+y = 3e-1230", """\
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NAME 'x' (1, 0) (1, 1)
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OP '+' (1, 1) (1, 2)
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NAME 'y' (1, 2) (1, 3)
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OP '=' (1, 4) (1, 5)
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NUMBER '3e-1230' (1, 6) (1, 13)
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""")
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self.check_tokenize("x = 3.14e159", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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NUMBER '3.14e159' (1, 4) (1, 12)
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""")
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def test_string(self):
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# String literals
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self.check_tokenize("x = ''; y = \"\"", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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STRING "''" (1, 4) (1, 6)
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OP ';' (1, 6) (1, 7)
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NAME 'y' (1, 8) (1, 9)
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OP '=' (1, 10) (1, 11)
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STRING '""' (1, 12) (1, 14)
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""")
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self.check_tokenize("x = '\"'; y = \"'\"", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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STRING '\\'"\\'' (1, 4) (1, 7)
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OP ';' (1, 7) (1, 8)
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NAME 'y' (1, 9) (1, 10)
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OP '=' (1, 11) (1, 12)
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STRING '"\\'"' (1, 13) (1, 16)
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""")
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self.check_tokenize("x = \"doesn't \"shrink\", does it\"", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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STRING '"doesn\\'t "' (1, 4) (1, 14)
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NAME 'shrink' (1, 14) (1, 20)
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STRING '", does it"' (1, 20) (1, 31)
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""")
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self.check_tokenize("x = 'abc' + 'ABC'", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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STRING "'abc'" (1, 4) (1, 9)
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OP '+' (1, 10) (1, 11)
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STRING "'ABC'" (1, 12) (1, 17)
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""")
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self.check_tokenize('y = "ABC" + "ABC"', """\
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NAME 'y' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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STRING '"ABC"' (1, 4) (1, 9)
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OP '+' (1, 10) (1, 11)
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STRING '"ABC"' (1, 12) (1, 17)
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""")
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self.check_tokenize("x = r'abc' + r'ABC' + R'ABC' + R'ABC'", """\
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NAME 'x' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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STRING "r'abc'" (1, 4) (1, 10)
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OP '+' (1, 11) (1, 12)
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STRING "r'ABC'" (1, 13) (1, 19)
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OP '+' (1, 20) (1, 21)
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STRING "R'ABC'" (1, 22) (1, 28)
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OP '+' (1, 29) (1, 30)
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STRING "R'ABC'" (1, 31) (1, 37)
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""")
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self.check_tokenize('y = r"abc" + r"ABC" + R"ABC" + R"ABC"', """\
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NAME 'y' (1, 0) (1, 1)
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OP '=' (1, 2) (1, 3)
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STRING 'r"abc"' (1, 4) (1, 10)
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OP '+' (1, 11) (1, 12)
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STRING 'r"ABC"' (1, 13) (1, 19)
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OP '+' (1, 20) (1, 21)
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STRING 'R"ABC"' (1, 22) (1, 28)
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OP '+' (1, 29) (1, 30)
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STRING 'R"ABC"' (1, 31) (1, 37)
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""")
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self.check_tokenize("u'abc' + U'abc'", """\
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STRING "u'abc'" (1, 0) (1, 6)
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OP '+' (1, 7) (1, 8)
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STRING "U'abc'" (1, 9) (1, 15)
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""")
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self.check_tokenize('u"abc" + U"abc"', """\
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STRING 'u"abc"' (1, 0) (1, 6)
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OP '+' (1, 7) (1, 8)
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STRING 'U"abc"' (1, 9) (1, 15)
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""")
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self.check_tokenize("b'abc' + B'abc'", """\
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STRING "b'abc'" (1, 0) (1, 6)
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OP '+' (1, 7) (1, 8)
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STRING "B'abc'" (1, 9) (1, 15)
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""")
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self.check_tokenize('b"abc" + B"abc"', """\
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STRING 'b"abc"' (1, 0) (1, 6)
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OP '+' (1, 7) (1, 8)
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STRING 'B"abc"' (1, 9) (1, 15)
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""")
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self.check_tokenize("br'abc' + bR'abc' + Br'abc' + BR'abc'", """\
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STRING "br'abc'" (1, 0) (1, 7)
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OP '+' (1, 8) (1, 9)
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STRING "bR'abc'" (1, 10) (1, 17)
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OP '+' (1, 18) (1, 19)
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STRING "Br'abc'" (1, 20) (1, 27)
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OP '+' (1, 28) (1, 29)
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STRING "BR'abc'" (1, 30) (1, 37)
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""")
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self.check_tokenize('br"abc" + bR"abc" + Br"abc" + BR"abc"', """\
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STRING 'br"abc"' (1, 0) (1, 7)
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OP '+' (1, 8) (1, 9)
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STRING 'bR"abc"' (1, 10) (1, 17)
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OP '+' (1, 18) (1, 19)
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STRING 'Br"abc"' (1, 20) (1, 27)
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OP '+' (1, 28) (1, 29)
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STRING 'BR"abc"' (1, 30) (1, 37)
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""")
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self.check_tokenize("rb'abc' + rB'abc' + Rb'abc' + RB'abc'", """\
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STRING "rb'abc'" (1, 0) (1, 7)
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OP '+' (1, 8) (1, 9)
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STRING "rB'abc'" (1, 10) (1, 17)
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OP '+' (1, 18) (1, 19)
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STRING "Rb'abc'" (1, 20) (1, 27)
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OP '+' (1, 28) (1, 29)
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STRING "RB'abc'" (1, 30) (1, 37)
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""")
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self.check_tokenize('rb"abc" + rB"abc" + Rb"abc" + RB"abc"', """\
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STRING 'rb"abc"' (1, 0) (1, 7)
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OP '+' (1, 8) (1, 9)
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STRING 'rB"abc"' (1, 10) (1, 17)
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OP '+' (1, 18) (1, 19)
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STRING 'Rb"abc"' (1, 20) (1, 27)
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OP '+' (1, 28) (1, 29)
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STRING 'RB"abc"' (1, 30) (1, 37)
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""")
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# Check 0, 1, and 2 character string prefixes.
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self.check_tokenize(r'"a\
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de\
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fg"', """\
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STRING '"a\\\\\\nde\\\\\\nfg"\' (1, 0) (3, 3)
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""")
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self.check_tokenize(r'u"a\
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de"', """\
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STRING 'u"a\\\\\\nde"\' (1, 0) (2, 3)
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""")
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self.check_tokenize(r'rb"a\
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d"', """\
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STRING 'rb"a\\\\\\nd"\' (1, 0) (2, 2)
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""")
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self.check_tokenize(r'"""a\
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b"""', """\
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STRING '\"\""a\\\\\\nb\"\""' (1, 0) (2, 4)
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""")
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self.check_tokenize(r'u"""a\
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b"""', """\
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STRING 'u\"\""a\\\\\\nb\"\""' (1, 0) (2, 4)
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""")
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self.check_tokenize(r'rb"""a\
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b\
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c"""', """\
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STRING 'rb"\""a\\\\\\nb\\\\\\nc"\""' (1, 0) (3, 4)
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""")
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self.check_tokenize('f"abc"', """\
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STRING 'f"abc"' (1, 0) (1, 6)
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""")
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self.check_tokenize('fR"a{b}c"', """\
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STRING 'fR"a{b}c"' (1, 0) (1, 9)
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""")
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self.check_tokenize('f"""abc"""', """\
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STRING 'f\"\"\"abc\"\"\"' (1, 0) (1, 10)
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""")
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self.check_tokenize(r'f"abc\
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def"', """\
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STRING 'f"abc\\\\\\ndef"' (1, 0) (2, 4)
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""")
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self.check_tokenize(r'Rf"abc\
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def"', """\
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STRING 'Rf"abc\\\\\\ndef"' (1, 0) (2, 4)
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""")
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def test_function(self):
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self.check_tokenize("def d22(a, b, c=2, d=2, *k): pass", """\
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NAME 'def' (1, 0) (1, 3)
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NAME 'd22' (1, 4) (1, 7)
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OP '(' (1, 7) (1, 8)
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NAME 'a' (1, 8) (1, 9)
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OP ',' (1, 9) (1, 10)
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NAME 'b' (1, 11) (1, 12)
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OP ',' (1, 12) (1, 13)
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NAME 'c' (1, 14) (1, 15)
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OP '=' (1, 15) (1, 16)
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NUMBER '2' (1, 16) (1, 17)
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OP ',' (1, 17) (1, 18)
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NAME 'd' (1, 19) (1, 20)
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OP '=' (1, 20) (1, 21)
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NUMBER '2' (1, 21) (1, 22)
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OP ',' (1, 22) (1, 23)
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OP '*' (1, 24) (1, 25)
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NAME 'k' (1, 25) (1, 26)
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OP ')' (1, 26) (1, 27)
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OP ':' (1, 27) (1, 28)
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NAME 'pass' (1, 29) (1, 33)
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""")
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self.check_tokenize("def d01v_(a=1, *k, **w): pass", """\
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NAME 'def' (1, 0) (1, 3)
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NAME 'd01v_' (1, 4) (1, 9)
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OP '(' (1, 9) (1, 10)
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NAME 'a' (1, 10) (1, 11)
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OP '=' (1, 11) (1, 12)
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NUMBER '1' (1, 12) (1, 13)
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OP ',' (1, 13) (1, 14)
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OP '*' (1, 15) (1, 16)
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NAME 'k' (1, 16) (1, 17)
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OP ',' (1, 17) (1, 18)
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OP '**' (1, 19) (1, 21)
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NAME 'w' (1, 21) (1, 22)
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OP ')' (1, 22) (1, 23)
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OP ':' (1, 23) (1, 24)
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NAME 'pass' (1, 25) (1, 29)
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""")
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def test_comparison(self):
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# Comparison
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self.check_tokenize("if 1 < 1 > 1 == 1 >= 5 <= 0x15 <= 0x12 != "
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"1 and 5 in 1 not in 1 is 1 or 5 is not 1: pass", """\
|
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NAME 'if' (1, 0) (1, 2)
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NUMBER '1' (1, 3) (1, 4)
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OP '<' (1, 5) (1, 6)
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NUMBER '1' (1, 7) (1, 8)
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OP '>' (1, 9) (1, 10)
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NUMBER '1' (1, 11) (1, 12)
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OP '==' (1, 13) (1, 15)
|
|
NUMBER '1' (1, 16) (1, 17)
|
|
OP '>=' (1, 18) (1, 20)
|
|
NUMBER '5' (1, 21) (1, 22)
|
|
OP '<=' (1, 23) (1, 25)
|
|
NUMBER '0x15' (1, 26) (1, 30)
|
|
OP '<=' (1, 31) (1, 33)
|
|
NUMBER '0x12' (1, 34) (1, 38)
|
|
OP '!=' (1, 39) (1, 41)
|
|
NUMBER '1' (1, 42) (1, 43)
|
|
NAME 'and' (1, 44) (1, 47)
|
|
NUMBER '5' (1, 48) (1, 49)
|
|
NAME 'in' (1, 50) (1, 52)
|
|
NUMBER '1' (1, 53) (1, 54)
|
|
NAME 'not' (1, 55) (1, 58)
|
|
NAME 'in' (1, 59) (1, 61)
|
|
NUMBER '1' (1, 62) (1, 63)
|
|
NAME 'is' (1, 64) (1, 66)
|
|
NUMBER '1' (1, 67) (1, 68)
|
|
NAME 'or' (1, 69) (1, 71)
|
|
NUMBER '5' (1, 72) (1, 73)
|
|
NAME 'is' (1, 74) (1, 76)
|
|
NAME 'not' (1, 77) (1, 80)
|
|
NUMBER '1' (1, 81) (1, 82)
|
|
OP ':' (1, 82) (1, 83)
|
|
NAME 'pass' (1, 84) (1, 88)
|
|
""")
|
|
|
|
def test_shift(self):
|
|
# Shift
|
|
self.check_tokenize("x = 1 << 1 >> 5", """\
|
|
NAME 'x' (1, 0) (1, 1)
|
|
OP '=' (1, 2) (1, 3)
|
|
NUMBER '1' (1, 4) (1, 5)
|
|
OP '<<' (1, 6) (1, 8)
|
|
NUMBER '1' (1, 9) (1, 10)
|
|
OP '>>' (1, 11) (1, 13)
|
|
NUMBER '5' (1, 14) (1, 15)
|
|
""")
|
|
|
|
def test_additive(self):
|
|
# Additive
|
|
self.check_tokenize("x = 1 - y + 15 - 1 + 0x124 + z + a[5]", """\
|
|
NAME 'x' (1, 0) (1, 1)
|
|
OP '=' (1, 2) (1, 3)
|
|
NUMBER '1' (1, 4) (1, 5)
|
|
OP '-' (1, 6) (1, 7)
|
|
NAME 'y' (1, 8) (1, 9)
|
|
OP '+' (1, 10) (1, 11)
|
|
NUMBER '15' (1, 12) (1, 14)
|
|
OP '-' (1, 15) (1, 16)
|
|
NUMBER '1' (1, 17) (1, 18)
|
|
OP '+' (1, 19) (1, 20)
|
|
NUMBER '0x124' (1, 21) (1, 26)
|
|
OP '+' (1, 27) (1, 28)
|
|
NAME 'z' (1, 29) (1, 30)
|
|
OP '+' (1, 31) (1, 32)
|
|
NAME 'a' (1, 33) (1, 34)
|
|
OP '[' (1, 34) (1, 35)
|
|
NUMBER '5' (1, 35) (1, 36)
|
|
OP ']' (1, 36) (1, 37)
|
|
""")
|
|
|
|
def test_multiplicative(self):
|
|
# Multiplicative
|
|
self.check_tokenize("x = 1//1*1/5*12%0x12@42", """\
|
|
NAME 'x' (1, 0) (1, 1)
|
|
OP '=' (1, 2) (1, 3)
|
|
NUMBER '1' (1, 4) (1, 5)
|
|
OP '//' (1, 5) (1, 7)
|
|
NUMBER '1' (1, 7) (1, 8)
|
|
OP '*' (1, 8) (1, 9)
|
|
NUMBER '1' (1, 9) (1, 10)
|
|
OP '/' (1, 10) (1, 11)
|
|
NUMBER '5' (1, 11) (1, 12)
|
|
OP '*' (1, 12) (1, 13)
|
|
NUMBER '12' (1, 13) (1, 15)
|
|
OP '%' (1, 15) (1, 16)
|
|
NUMBER '0x12' (1, 16) (1, 20)
|
|
OP '@' (1, 20) (1, 21)
|
|
NUMBER '42' (1, 21) (1, 23)
|
|
""")
|
|
|
|
def test_unary(self):
|
|
# Unary
|
|
self.check_tokenize("~1 ^ 1 & 1 |1 ^ -1", """\
|
|
OP '~' (1, 0) (1, 1)
|
|
NUMBER '1' (1, 1) (1, 2)
|
|
OP '^' (1, 3) (1, 4)
|
|
NUMBER '1' (1, 5) (1, 6)
|
|
OP '&' (1, 7) (1, 8)
|
|
NUMBER '1' (1, 9) (1, 10)
|
|
OP '|' (1, 11) (1, 12)
|
|
NUMBER '1' (1, 12) (1, 13)
|
|
OP '^' (1, 14) (1, 15)
|
|
OP '-' (1, 16) (1, 17)
|
|
NUMBER '1' (1, 17) (1, 18)
|
|
""")
|
|
self.check_tokenize("-1*1/1+1*1//1 - ---1**1", """\
|
|
OP '-' (1, 0) (1, 1)
|
|
NUMBER '1' (1, 1) (1, 2)
|
|
OP '*' (1, 2) (1, 3)
|
|
NUMBER '1' (1, 3) (1, 4)
|
|
OP '/' (1, 4) (1, 5)
|
|
NUMBER '1' (1, 5) (1, 6)
|
|
OP '+' (1, 6) (1, 7)
|
|
NUMBER '1' (1, 7) (1, 8)
|
|
OP '*' (1, 8) (1, 9)
|
|
NUMBER '1' (1, 9) (1, 10)
|
|
OP '//' (1, 10) (1, 12)
|
|
NUMBER '1' (1, 12) (1, 13)
|
|
OP '-' (1, 14) (1, 15)
|
|
OP '-' (1, 16) (1, 17)
|
|
OP '-' (1, 17) (1, 18)
|
|
OP '-' (1, 18) (1, 19)
|
|
NUMBER '1' (1, 19) (1, 20)
|
|
OP '**' (1, 20) (1, 22)
|
|
NUMBER '1' (1, 22) (1, 23)
|
|
""")
|
|
|
|
def test_selector(self):
|
|
# Selector
|
|
self.check_tokenize("import sys, time\nx = sys.modules['time'].time()", """\
|
|
NAME 'import' (1, 0) (1, 6)
|
|
NAME 'sys' (1, 7) (1, 10)
|
|
OP ',' (1, 10) (1, 11)
|
|
NAME 'time' (1, 12) (1, 16)
|
|
NEWLINE '\\n' (1, 16) (1, 17)
|
|
NAME 'x' (2, 0) (2, 1)
|
|
OP '=' (2, 2) (2, 3)
|
|
NAME 'sys' (2, 4) (2, 7)
|
|
OP '.' (2, 7) (2, 8)
|
|
NAME 'modules' (2, 8) (2, 15)
|
|
OP '[' (2, 15) (2, 16)
|
|
STRING "'time'" (2, 16) (2, 22)
|
|
OP ']' (2, 22) (2, 23)
|
|
OP '.' (2, 23) (2, 24)
|
|
NAME 'time' (2, 24) (2, 28)
|
|
OP '(' (2, 28) (2, 29)
|
|
OP ')' (2, 29) (2, 30)
|
|
""")
|
|
|
|
def test_method(self):
|
|
# Methods
|
|
self.check_tokenize("@staticmethod\ndef foo(x,y): pass", """\
|
|
OP '@' (1, 0) (1, 1)
|
|
NAME 'staticmethod' (1, 1) (1, 13)
|
|
NEWLINE '\\n' (1, 13) (1, 14)
|
|
NAME 'def' (2, 0) (2, 3)
|
|
NAME 'foo' (2, 4) (2, 7)
|
|
OP '(' (2, 7) (2, 8)
|
|
NAME 'x' (2, 8) (2, 9)
|
|
OP ',' (2, 9) (2, 10)
|
|
NAME 'y' (2, 10) (2, 11)
|
|
OP ')' (2, 11) (2, 12)
|
|
OP ':' (2, 12) (2, 13)
|
|
NAME 'pass' (2, 14) (2, 18)
|
|
""")
|
|
|
|
def test_tabs(self):
|
|
# Evil tabs
|
|
self.check_tokenize("def f():\n"
|
|
"\tif x\n"
|
|
" \tpass", """\
|
|
NAME 'def' (1, 0) (1, 3)
|
|
NAME 'f' (1, 4) (1, 5)
|
|
OP '(' (1, 5) (1, 6)
|
|
OP ')' (1, 6) (1, 7)
|
|
OP ':' (1, 7) (1, 8)
|
|
NEWLINE '\\n' (1, 8) (1, 9)
|
|
INDENT '\\t' (2, 0) (2, 1)
|
|
NAME 'if' (2, 1) (2, 3)
|
|
NAME 'x' (2, 4) (2, 5)
|
|
NEWLINE '\\n' (2, 5) (2, 6)
|
|
INDENT ' \\t' (3, 0) (3, 9)
|
|
NAME 'pass' (3, 9) (3, 13)
|
|
DEDENT '' (4, 0) (4, 0)
|
|
DEDENT '' (4, 0) (4, 0)
|
|
""")
|
|
|
|
def test_non_ascii_identifiers(self):
|
|
# Non-ascii identifiers
|
|
self.check_tokenize("Örter = 'places'\ngrün = 'green'", """\
|
|
NAME 'Örter' (1, 0) (1, 5)
|
|
OP '=' (1, 6) (1, 7)
|
|
STRING "'places'" (1, 8) (1, 16)
|
|
NEWLINE '\\n' (1, 16) (1, 17)
|
|
NAME 'grün' (2, 0) (2, 4)
|
|
OP '=' (2, 5) (2, 6)
|
|
STRING "'green'" (2, 7) (2, 14)
|
|
""")
|
|
|
|
def test_unicode(self):
|
|
# Legacy unicode literals:
|
|
self.check_tokenize("Örter = u'places'\ngrün = U'green'", """\
|
|
NAME 'Örter' (1, 0) (1, 5)
|
|
OP '=' (1, 6) (1, 7)
|
|
STRING "u'places'" (1, 8) (1, 17)
|
|
NEWLINE '\\n' (1, 17) (1, 18)
|
|
NAME 'grün' (2, 0) (2, 4)
|
|
OP '=' (2, 5) (2, 6)
|
|
STRING "U'green'" (2, 7) (2, 15)
|
|
""")
|
|
|
|
def test_async(self):
|
|
# Async/await extension:
|
|
self.check_tokenize("async = 1", """\
|
|
NAME 'async' (1, 0) (1, 5)
|
|
OP '=' (1, 6) (1, 7)
|
|
NUMBER '1' (1, 8) (1, 9)
|
|
""")
|
|
|
|
self.check_tokenize("a = (async = 1)", """\
|
|
NAME 'a' (1, 0) (1, 1)
|
|
OP '=' (1, 2) (1, 3)
|
|
OP '(' (1, 4) (1, 5)
|
|
NAME 'async' (1, 5) (1, 10)
|
|
OP '=' (1, 11) (1, 12)
|
|
NUMBER '1' (1, 13) (1, 14)
|
|
OP ')' (1, 14) (1, 15)
|
|
""")
|
|
|
|
self.check_tokenize("async()", """\
|
|
NAME 'async' (1, 0) (1, 5)
|
|
OP '(' (1, 5) (1, 6)
|
|
OP ')' (1, 6) (1, 7)
|
|
""")
|
|
|
|
self.check_tokenize("class async(Bar):pass", """\
|
|
NAME 'class' (1, 0) (1, 5)
|
|
NAME 'async' (1, 6) (1, 11)
|
|
OP '(' (1, 11) (1, 12)
|
|
NAME 'Bar' (1, 12) (1, 15)
|
|
OP ')' (1, 15) (1, 16)
|
|
OP ':' (1, 16) (1, 17)
|
|
NAME 'pass' (1, 17) (1, 21)
|
|
""")
|
|
|
|
self.check_tokenize("class async:pass", """\
|
|
NAME 'class' (1, 0) (1, 5)
|
|
NAME 'async' (1, 6) (1, 11)
|
|
OP ':' (1, 11) (1, 12)
|
|
NAME 'pass' (1, 12) (1, 16)
|
|
""")
|
|
|
|
self.check_tokenize("await = 1", """\
|
|
NAME 'await' (1, 0) (1, 5)
|
|
OP '=' (1, 6) (1, 7)
|
|
NUMBER '1' (1, 8) (1, 9)
|
|
""")
|
|
|
|
self.check_tokenize("foo.async", """\
|
|
NAME 'foo' (1, 0) (1, 3)
|
|
OP '.' (1, 3) (1, 4)
|
|
NAME 'async' (1, 4) (1, 9)
|
|
""")
|
|
|
|
self.check_tokenize("async for a in b: pass", """\
|
|
NAME 'async' (1, 0) (1, 5)
|
|
NAME 'for' (1, 6) (1, 9)
|
|
NAME 'a' (1, 10) (1, 11)
|
|
NAME 'in' (1, 12) (1, 14)
|
|
NAME 'b' (1, 15) (1, 16)
|
|
OP ':' (1, 16) (1, 17)
|
|
NAME 'pass' (1, 18) (1, 22)
|
|
""")
|
|
|
|
self.check_tokenize("async with a as b: pass", """\
|
|
NAME 'async' (1, 0) (1, 5)
|
|
NAME 'with' (1, 6) (1, 10)
|
|
NAME 'a' (1, 11) (1, 12)
|
|
NAME 'as' (1, 13) (1, 15)
|
|
NAME 'b' (1, 16) (1, 17)
|
|
OP ':' (1, 17) (1, 18)
|
|
NAME 'pass' (1, 19) (1, 23)
|
|
""")
|
|
|
|
self.check_tokenize("async.foo", """\
|
|
NAME 'async' (1, 0) (1, 5)
|
|
OP '.' (1, 5) (1, 6)
|
|
NAME 'foo' (1, 6) (1, 9)
|
|
""")
|
|
|
|
self.check_tokenize("async", """\
|
|
NAME 'async' (1, 0) (1, 5)
|
|
""")
|
|
|
|
self.check_tokenize("async\n#comment\nawait", """\
|
|
NAME 'async' (1, 0) (1, 5)
|
|
NEWLINE '\\n' (1, 5) (1, 6)
|
|
COMMENT '#comment' (2, 0) (2, 8)
|
|
NL '\\n' (2, 8) (2, 9)
|
|
NAME 'await' (3, 0) (3, 5)
|
|
""")
|
|
|
|
self.check_tokenize("async\n...\nawait", """\
|
|
NAME 'async' (1, 0) (1, 5)
|
|
NEWLINE '\\n' (1, 5) (1, 6)
|
|
OP '...' (2, 0) (2, 3)
|
|
NEWLINE '\\n' (2, 3) (2, 4)
|
|
NAME 'await' (3, 0) (3, 5)
|
|
""")
|
|
|
|
self.check_tokenize("async\nawait", """\
|
|
NAME 'async' (1, 0) (1, 5)
|
|
NEWLINE '\\n' (1, 5) (1, 6)
|
|
NAME 'await' (2, 0) (2, 5)
|
|
""")
|
|
|
|
self.check_tokenize("foo.async + 1", """\
|
|
NAME 'foo' (1, 0) (1, 3)
|
|
OP '.' (1, 3) (1, 4)
|
|
NAME 'async' (1, 4) (1, 9)
|
|
OP '+' (1, 10) (1, 11)
|
|
NUMBER '1' (1, 12) (1, 13)
|
|
""")
|
|
|
|
self.check_tokenize("async def foo(): pass", """\
|
|
ASYNC 'async' (1, 0) (1, 5)
|
|
NAME 'def' (1, 6) (1, 9)
|
|
NAME 'foo' (1, 10) (1, 13)
|
|
OP '(' (1, 13) (1, 14)
|
|
OP ')' (1, 14) (1, 15)
|
|
OP ':' (1, 15) (1, 16)
|
|
NAME 'pass' (1, 17) (1, 21)
|
|
""")
|
|
|
|
self.check_tokenize('''\
|
|
async def foo():
|
|
def foo(await):
|
|
await = 1
|
|
if 1:
|
|
await
|
|
async += 1
|
|
''', """\
|
|
ASYNC 'async' (1, 0) (1, 5)
|
|
NAME 'def' (1, 6) (1, 9)
|
|
NAME 'foo' (1, 10) (1, 13)
|
|
OP '(' (1, 13) (1, 14)
|
|
OP ')' (1, 14) (1, 15)
|
|
OP ':' (1, 15) (1, 16)
|
|
NEWLINE '\\n' (1, 16) (1, 17)
|
|
INDENT ' ' (2, 0) (2, 2)
|
|
NAME 'def' (2, 2) (2, 5)
|
|
NAME 'foo' (2, 6) (2, 9)
|
|
OP '(' (2, 9) (2, 10)
|
|
AWAIT 'await' (2, 10) (2, 15)
|
|
OP ')' (2, 15) (2, 16)
|
|
OP ':' (2, 16) (2, 17)
|
|
NEWLINE '\\n' (2, 17) (2, 18)
|
|
INDENT ' ' (3, 0) (3, 4)
|
|
AWAIT 'await' (3, 4) (3, 9)
|
|
OP '=' (3, 10) (3, 11)
|
|
NUMBER '1' (3, 12) (3, 13)
|
|
NEWLINE '\\n' (3, 13) (3, 14)
|
|
DEDENT '' (4, 2) (4, 2)
|
|
NAME 'if' (4, 2) (4, 4)
|
|
NUMBER '1' (4, 5) (4, 6)
|
|
OP ':' (4, 6) (4, 7)
|
|
NEWLINE '\\n' (4, 7) (4, 8)
|
|
INDENT ' ' (5, 0) (5, 4)
|
|
AWAIT 'await' (5, 4) (5, 9)
|
|
NEWLINE '\\n' (5, 9) (5, 10)
|
|
DEDENT '' (6, 0) (6, 0)
|
|
DEDENT '' (6, 0) (6, 0)
|
|
NAME 'async' (6, 0) (6, 5)
|
|
OP '+=' (6, 6) (6, 8)
|
|
NUMBER '1' (6, 9) (6, 10)
|
|
NEWLINE '\\n' (6, 10) (6, 11)
|
|
""")
|
|
|
|
self.check_tokenize('''\
|
|
async def foo():
|
|
async for i in 1: pass''', """\
|
|
ASYNC 'async' (1, 0) (1, 5)
|
|
NAME 'def' (1, 6) (1, 9)
|
|
NAME 'foo' (1, 10) (1, 13)
|
|
OP '(' (1, 13) (1, 14)
|
|
OP ')' (1, 14) (1, 15)
|
|
OP ':' (1, 15) (1, 16)
|
|
NEWLINE '\\n' (1, 16) (1, 17)
|
|
INDENT ' ' (2, 0) (2, 2)
|
|
ASYNC 'async' (2, 2) (2, 7)
|
|
NAME 'for' (2, 8) (2, 11)
|
|
NAME 'i' (2, 12) (2, 13)
|
|
NAME 'in' (2, 14) (2, 16)
|
|
NUMBER '1' (2, 17) (2, 18)
|
|
OP ':' (2, 18) (2, 19)
|
|
NAME 'pass' (2, 20) (2, 24)
|
|
DEDENT '' (3, 0) (3, 0)
|
|
""")
|
|
|
|
self.check_tokenize('''async def foo(async): await''', """\
|
|
ASYNC 'async' (1, 0) (1, 5)
|
|
NAME 'def' (1, 6) (1, 9)
|
|
NAME 'foo' (1, 10) (1, 13)
|
|
OP '(' (1, 13) (1, 14)
|
|
ASYNC 'async' (1, 14) (1, 19)
|
|
OP ')' (1, 19) (1, 20)
|
|
OP ':' (1, 20) (1, 21)
|
|
AWAIT 'await' (1, 22) (1, 27)
|
|
""")
|
|
|
|
self.check_tokenize('''\
|
|
def f():
|
|
|
|
def baz(): pass
|
|
async def bar(): pass
|
|
|
|
await = 2''', """\
|
|
NAME 'def' (1, 0) (1, 3)
|
|
NAME 'f' (1, 4) (1, 5)
|
|
OP '(' (1, 5) (1, 6)
|
|
OP ')' (1, 6) (1, 7)
|
|
OP ':' (1, 7) (1, 8)
|
|
NEWLINE '\\n' (1, 8) (1, 9)
|
|
NL '\\n' (2, 0) (2, 1)
|
|
INDENT ' ' (3, 0) (3, 2)
|
|
NAME 'def' (3, 2) (3, 5)
|
|
NAME 'baz' (3, 6) (3, 9)
|
|
OP '(' (3, 9) (3, 10)
|
|
OP ')' (3, 10) (3, 11)
|
|
OP ':' (3, 11) (3, 12)
|
|
NAME 'pass' (3, 13) (3, 17)
|
|
NEWLINE '\\n' (3, 17) (3, 18)
|
|
ASYNC 'async' (4, 2) (4, 7)
|
|
NAME 'def' (4, 8) (4, 11)
|
|
NAME 'bar' (4, 12) (4, 15)
|
|
OP '(' (4, 15) (4, 16)
|
|
OP ')' (4, 16) (4, 17)
|
|
OP ':' (4, 17) (4, 18)
|
|
NAME 'pass' (4, 19) (4, 23)
|
|
NEWLINE '\\n' (4, 23) (4, 24)
|
|
NL '\\n' (5, 0) (5, 1)
|
|
NAME 'await' (6, 2) (6, 7)
|
|
OP '=' (6, 8) (6, 9)
|
|
NUMBER '2' (6, 10) (6, 11)
|
|
DEDENT '' (7, 0) (7, 0)
|
|
""")
|
|
|
|
self.check_tokenize('''\
|
|
async def f():
|
|
|
|
def baz(): pass
|
|
async def bar(): pass
|
|
|
|
await = 2''', """\
|
|
ASYNC 'async' (1, 0) (1, 5)
|
|
NAME 'def' (1, 6) (1, 9)
|
|
NAME 'f' (1, 10) (1, 11)
|
|
OP '(' (1, 11) (1, 12)
|
|
OP ')' (1, 12) (1, 13)
|
|
OP ':' (1, 13) (1, 14)
|
|
NEWLINE '\\n' (1, 14) (1, 15)
|
|
NL '\\n' (2, 0) (2, 1)
|
|
INDENT ' ' (3, 0) (3, 2)
|
|
NAME 'def' (3, 2) (3, 5)
|
|
NAME 'baz' (3, 6) (3, 9)
|
|
OP '(' (3, 9) (3, 10)
|
|
OP ')' (3, 10) (3, 11)
|
|
OP ':' (3, 11) (3, 12)
|
|
NAME 'pass' (3, 13) (3, 17)
|
|
NEWLINE '\\n' (3, 17) (3, 18)
|
|
ASYNC 'async' (4, 2) (4, 7)
|
|
NAME 'def' (4, 8) (4, 11)
|
|
NAME 'bar' (4, 12) (4, 15)
|
|
OP '(' (4, 15) (4, 16)
|
|
OP ')' (4, 16) (4, 17)
|
|
OP ':' (4, 17) (4, 18)
|
|
NAME 'pass' (4, 19) (4, 23)
|
|
NEWLINE '\\n' (4, 23) (4, 24)
|
|
NL '\\n' (5, 0) (5, 1)
|
|
AWAIT 'await' (6, 2) (6, 7)
|
|
OP '=' (6, 8) (6, 9)
|
|
NUMBER '2' (6, 10) (6, 11)
|
|
DEDENT '' (7, 0) (7, 0)
|
|
""")
|
|
|
|
|
|
def decistmt(s):
|
|
result = []
|
|
g = tokenize(BytesIO(s.encode('utf-8')).readline) # tokenize the string
|
|
for toknum, tokval, _, _, _ in g:
|
|
if toknum == NUMBER and '.' in tokval: # replace NUMBER tokens
|
|
result.extend([
|
|
(NAME, 'Decimal'),
|
|
(OP, '('),
|
|
(STRING, repr(tokval)),
|
|
(OP, ')')
|
|
])
|
|
else:
|
|
result.append((toknum, tokval))
|
|
return untokenize(result).decode('utf-8')
|
|
|
|
class TestMisc(TestCase):
|
|
|
|
def test_decistmt(self):
|
|
# Substitute Decimals for floats in a string of statements.
|
|
# This is an example from the docs.
|
|
|
|
from decimal import Decimal
|
|
s = '+21.3e-5*-.1234/81.7'
|
|
self.assertEqual(decistmt(s),
|
|
"+Decimal ('21.3e-5')*-Decimal ('.1234')/Decimal ('81.7')")
|
|
|
|
# The format of the exponent is inherited from the platform C library.
|
|
# Known cases are "e-007" (Windows) and "e-07" (not Windows). Since
|
|
# we're only showing 11 digits, and the 12th isn't close to 5, the
|
|
# rest of the output should be platform-independent.
|
|
self.assertRegex(repr(eval(s)), '-3.2171603427[0-9]*e-0+7')
|
|
|
|
# Output from calculations with Decimal should be identical across all
|
|
# platforms.
|
|
self.assertEqual(eval(decistmt(s)),
|
|
Decimal('-3.217160342717258261933904529E-7'))
|
|
|
|
|
|
class TestTokenizerAdheresToPep0263(TestCase):
|
|
"""
|
|
Test that tokenizer adheres to the coding behaviour stipulated in PEP 0263.
|
|
"""
|
|
|
|
def _testFile(self, filename):
|
|
path = os.path.join(os.path.dirname(__file__), filename)
|
|
TestRoundtrip.check_roundtrip(self, open(path, 'rb'))
|
|
|
|
def test_utf8_coding_cookie_and_no_utf8_bom(self):
|
|
f = 'tokenize_tests-utf8-coding-cookie-and-no-utf8-bom-sig.txt'
|
|
self._testFile(f)
|
|
|
|
def test_latin1_coding_cookie_and_utf8_bom(self):
|
|
"""
|
|
As per PEP 0263, if a file starts with a utf-8 BOM signature, the only
|
|
allowed encoding for the comment is 'utf-8'. The text file used in
|
|
this test starts with a BOM signature, but specifies latin1 as the
|
|
coding, so verify that a SyntaxError is raised, which matches the
|
|
behaviour of the interpreter when it encounters a similar condition.
|
|
"""
|
|
f = 'tokenize_tests-latin1-coding-cookie-and-utf8-bom-sig.txt'
|
|
self.assertRaises(SyntaxError, self._testFile, f)
|
|
|
|
def test_no_coding_cookie_and_utf8_bom(self):
|
|
f = 'tokenize_tests-no-coding-cookie-and-utf8-bom-sig-only.txt'
|
|
self._testFile(f)
|
|
|
|
def test_utf8_coding_cookie_and_utf8_bom(self):
|
|
f = 'tokenize_tests-utf8-coding-cookie-and-utf8-bom-sig.txt'
|
|
self._testFile(f)
|
|
|
|
def test_bad_coding_cookie(self):
|
|
self.assertRaises(SyntaxError, self._testFile, 'bad_coding.py')
|
|
self.assertRaises(SyntaxError, self._testFile, 'bad_coding2.py')
|
|
|
|
|
|
class Test_Tokenize(TestCase):
|
|
|
|
def test__tokenize_decodes_with_specified_encoding(self):
|
|
literal = '"ЉЊЈЁЂ"'
|
|
line = literal.encode('utf-8')
|
|
first = False
|
|
def readline():
|
|
nonlocal first
|
|
if not first:
|
|
first = True
|
|
return line
|
|
else:
|
|
return b''
|
|
|
|
# skip the initial encoding token and the end token
|
|
tokens = list(_tokenize(readline, encoding='utf-8'))[1:-1]
|
|
expected_tokens = [(3, '"ЉЊЈЁЂ"', (1, 0), (1, 7), '"ЉЊЈЁЂ"')]
|
|
self.assertEqual(tokens, expected_tokens,
|
|
"bytes not decoded with encoding")
|
|
|
|
def test__tokenize_does_not_decode_with_encoding_none(self):
|
|
literal = '"ЉЊЈЁЂ"'
|
|
first = False
|
|
def readline():
|
|
nonlocal first
|
|
if not first:
|
|
first = True
|
|
return literal
|
|
else:
|
|
return b''
|
|
|
|
# skip the end token
|
|
tokens = list(_tokenize(readline, encoding=None))[:-1]
|
|
expected_tokens = [(3, '"ЉЊЈЁЂ"', (1, 0), (1, 7), '"ЉЊЈЁЂ"')]
|
|
self.assertEqual(tokens, expected_tokens,
|
|
"string not tokenized when encoding is None")
|
|
|
|
|
|
class TestDetectEncoding(TestCase):
|
|
|
|
def get_readline(self, lines):
|
|
index = 0
|
|
def readline():
|
|
nonlocal index
|
|
if index == len(lines):
|
|
raise StopIteration
|
|
line = lines[index]
|
|
index += 1
|
|
return line
|
|
return readline
|
|
|
|
def test_no_bom_no_encoding_cookie(self):
|
|
lines = (
|
|
b'# something\n',
|
|
b'print(something)\n',
|
|
b'do_something(else)\n'
|
|
)
|
|
encoding, consumed_lines = detect_encoding(self.get_readline(lines))
|
|
self.assertEqual(encoding, 'utf-8')
|
|
self.assertEqual(consumed_lines, list(lines[:2]))
|
|
|
|
def test_bom_no_cookie(self):
|
|
lines = (
|
|
b'\xef\xbb\xbf# something\n',
|
|
b'print(something)\n',
|
|
b'do_something(else)\n'
|
|
)
|
|
encoding, consumed_lines = detect_encoding(self.get_readline(lines))
|
|
self.assertEqual(encoding, 'utf-8-sig')
|
|
self.assertEqual(consumed_lines,
|
|
[b'# something\n', b'print(something)\n'])
|
|
|
|
def test_cookie_first_line_no_bom(self):
|
|
lines = (
|
|
b'# -*- coding: latin-1 -*-\n',
|
|
b'print(something)\n',
|
|
b'do_something(else)\n'
|
|
)
|
|
encoding, consumed_lines = detect_encoding(self.get_readline(lines))
|
|
self.assertEqual(encoding, 'iso-8859-1')
|
|
self.assertEqual(consumed_lines, [b'# -*- coding: latin-1 -*-\n'])
|
|
|
|
def test_matched_bom_and_cookie_first_line(self):
|
|
lines = (
|
|
b'\xef\xbb\xbf# coding=utf-8\n',
|
|
b'print(something)\n',
|
|
b'do_something(else)\n'
|
|
)
|
|
encoding, consumed_lines = detect_encoding(self.get_readline(lines))
|
|
self.assertEqual(encoding, 'utf-8-sig')
|
|
self.assertEqual(consumed_lines, [b'# coding=utf-8\n'])
|
|
|
|
def test_mismatched_bom_and_cookie_first_line_raises_syntaxerror(self):
|
|
lines = (
|
|
b'\xef\xbb\xbf# vim: set fileencoding=ascii :\n',
|
|
b'print(something)\n',
|
|
b'do_something(else)\n'
|
|
)
|
|
readline = self.get_readline(lines)
|
|
self.assertRaises(SyntaxError, detect_encoding, readline)
|
|
|
|
def test_cookie_second_line_no_bom(self):
|
|
lines = (
|
|
b'#! something\n',
|
|
b'# vim: set fileencoding=ascii :\n',
|
|
b'print(something)\n',
|
|
b'do_something(else)\n'
|
|
)
|
|
encoding, consumed_lines = detect_encoding(self.get_readline(lines))
|
|
self.assertEqual(encoding, 'ascii')
|
|
expected = [b'#! something\n', b'# vim: set fileencoding=ascii :\n']
|
|
self.assertEqual(consumed_lines, expected)
|
|
|
|
def test_matched_bom_and_cookie_second_line(self):
|
|
lines = (
|
|
b'\xef\xbb\xbf#! something\n',
|
|
b'f# coding=utf-8\n',
|
|
b'print(something)\n',
|
|
b'do_something(else)\n'
|
|
)
|
|
encoding, consumed_lines = detect_encoding(self.get_readline(lines))
|
|
self.assertEqual(encoding, 'utf-8-sig')
|
|
self.assertEqual(consumed_lines,
|
|
[b'#! something\n', b'f# coding=utf-8\n'])
|
|
|
|
def test_mismatched_bom_and_cookie_second_line_raises_syntaxerror(self):
|
|
lines = (
|
|
b'\xef\xbb\xbf#! something\n',
|
|
b'# vim: set fileencoding=ascii :\n',
|
|
b'print(something)\n',
|
|
b'do_something(else)\n'
|
|
)
|
|
readline = self.get_readline(lines)
|
|
self.assertRaises(SyntaxError, detect_encoding, readline)
|
|
|
|
def test_cookie_second_line_noncommented_first_line(self):
|
|
lines = (
|
|
b"print('\xc2\xa3')\n",
|
|
b'# vim: set fileencoding=iso8859-15 :\n',
|
|
b"print('\xe2\x82\xac')\n"
|
|
)
|
|
encoding, consumed_lines = detect_encoding(self.get_readline(lines))
|
|
self.assertEqual(encoding, 'utf-8')
|
|
expected = [b"print('\xc2\xa3')\n"]
|
|
self.assertEqual(consumed_lines, expected)
|
|
|
|
def test_cookie_second_line_commented_first_line(self):
|
|
lines = (
|
|
b"#print('\xc2\xa3')\n",
|
|
b'# vim: set fileencoding=iso8859-15 :\n',
|
|
b"print('\xe2\x82\xac')\n"
|
|
)
|
|
encoding, consumed_lines = detect_encoding(self.get_readline(lines))
|
|
self.assertEqual(encoding, 'iso8859-15')
|
|
expected = [b"#print('\xc2\xa3')\n", b'# vim: set fileencoding=iso8859-15 :\n']
|
|
self.assertEqual(consumed_lines, expected)
|
|
|
|
def test_cookie_second_line_empty_first_line(self):
|
|
lines = (
|
|
b'\n',
|
|
b'# vim: set fileencoding=iso8859-15 :\n',
|
|
b"print('\xe2\x82\xac')\n"
|
|
)
|
|
encoding, consumed_lines = detect_encoding(self.get_readline(lines))
|
|
self.assertEqual(encoding, 'iso8859-15')
|
|
expected = [b'\n', b'# vim: set fileencoding=iso8859-15 :\n']
|
|
self.assertEqual(consumed_lines, expected)
|
|
|
|
def test_latin1_normalization(self):
|
|
# See get_normal_name() in tokenizer.c.
|
|
encodings = ("latin-1", "iso-8859-1", "iso-latin-1", "latin-1-unix",
|
|
"iso-8859-1-unix", "iso-latin-1-mac")
|
|
for encoding in encodings:
|
|
for rep in ("-", "_"):
|
|
enc = encoding.replace("-", rep)
|
|
lines = (b"#!/usr/bin/python\n",
|
|
b"# coding: " + enc.encode("ascii") + b"\n",
|
|
b"print(things)\n",
|
|
b"do_something += 4\n")
|
|
rl = self.get_readline(lines)
|
|
found, consumed_lines = detect_encoding(rl)
|
|
self.assertEqual(found, "iso-8859-1")
|
|
|
|
def test_syntaxerror_latin1(self):
|
|
# Issue 14629: need to raise SyntaxError if the first
|
|
# line(s) have non-UTF-8 characters
|
|
lines = (
|
|
b'print("\xdf")', # Latin-1: LATIN SMALL LETTER SHARP S
|
|
)
|
|
readline = self.get_readline(lines)
|
|
self.assertRaises(SyntaxError, detect_encoding, readline)
|
|
|
|
|
|
def test_utf8_normalization(self):
|
|
# See get_normal_name() in tokenizer.c.
|
|
encodings = ("utf-8", "utf-8-mac", "utf-8-unix")
|
|
for encoding in encodings:
|
|
for rep in ("-", "_"):
|
|
enc = encoding.replace("-", rep)
|
|
lines = (b"#!/usr/bin/python\n",
|
|
b"# coding: " + enc.encode("ascii") + b"\n",
|
|
b"1 + 3\n")
|
|
rl = self.get_readline(lines)
|
|
found, consumed_lines = detect_encoding(rl)
|
|
self.assertEqual(found, "utf-8")
|
|
|
|
def test_short_files(self):
|
|
readline = self.get_readline((b'print(something)\n',))
|
|
encoding, consumed_lines = detect_encoding(readline)
|
|
self.assertEqual(encoding, 'utf-8')
|
|
self.assertEqual(consumed_lines, [b'print(something)\n'])
|
|
|
|
encoding, consumed_lines = detect_encoding(self.get_readline(()))
|
|
self.assertEqual(encoding, 'utf-8')
|
|
self.assertEqual(consumed_lines, [])
|
|
|
|
readline = self.get_readline((b'\xef\xbb\xbfprint(something)\n',))
|
|
encoding, consumed_lines = detect_encoding(readline)
|
|
self.assertEqual(encoding, 'utf-8-sig')
|
|
self.assertEqual(consumed_lines, [b'print(something)\n'])
|
|
|
|
readline = self.get_readline((b'\xef\xbb\xbf',))
|
|
encoding, consumed_lines = detect_encoding(readline)
|
|
self.assertEqual(encoding, 'utf-8-sig')
|
|
self.assertEqual(consumed_lines, [])
|
|
|
|
readline = self.get_readline((b'# coding: bad\n',))
|
|
self.assertRaises(SyntaxError, detect_encoding, readline)
|
|
|
|
def test_false_encoding(self):
|
|
# Issue 18873: "Encoding" detected in non-comment lines
|
|
readline = self.get_readline((b'print("#coding=fake")',))
|
|
encoding, consumed_lines = detect_encoding(readline)
|
|
self.assertEqual(encoding, 'utf-8')
|
|
self.assertEqual(consumed_lines, [b'print("#coding=fake")'])
|
|
|
|
def test_open(self):
|
|
filename = support.TESTFN + '.py'
|
|
self.addCleanup(support.unlink, filename)
|
|
|
|
# test coding cookie
|
|
for encoding in ('iso-8859-15', 'utf-8'):
|
|
with open(filename, 'w', encoding=encoding) as fp:
|
|
print("# coding: %s" % encoding, file=fp)
|
|
print("print('euro:\u20ac')", file=fp)
|
|
with tokenize_open(filename) as fp:
|
|
self.assertEqual(fp.encoding, encoding)
|
|
self.assertEqual(fp.mode, 'r')
|
|
|
|
# test BOM (no coding cookie)
|
|
with open(filename, 'w', encoding='utf-8-sig') as fp:
|
|
print("print('euro:\u20ac')", file=fp)
|
|
with tokenize_open(filename) as fp:
|
|
self.assertEqual(fp.encoding, 'utf-8-sig')
|
|
self.assertEqual(fp.mode, 'r')
|
|
|
|
def test_filename_in_exception(self):
|
|
# When possible, include the file name in the exception.
|
|
path = 'some_file_path'
|
|
lines = (
|
|
b'print("\xdf")', # Latin-1: LATIN SMALL LETTER SHARP S
|
|
)
|
|
class Bunk:
|
|
def __init__(self, lines, path):
|
|
self.name = path
|
|
self._lines = lines
|
|
self._index = 0
|
|
|
|
def readline(self):
|
|
if self._index == len(lines):
|
|
raise StopIteration
|
|
line = lines[self._index]
|
|
self._index += 1
|
|
return line
|
|
|
|
with self.assertRaises(SyntaxError):
|
|
ins = Bunk(lines, path)
|
|
# Make sure lacking a name isn't an issue.
|
|
del ins.name
|
|
detect_encoding(ins.readline)
|
|
with self.assertRaisesRegex(SyntaxError, '.*{}'.format(path)):
|
|
ins = Bunk(lines, path)
|
|
detect_encoding(ins.readline)
|
|
|
|
def test_open_error(self):
|
|
# Issue #23840: open() must close the binary file on error
|
|
m = BytesIO(b'#coding:xxx')
|
|
with mock.patch('tokenize._builtin_open', return_value=m):
|
|
self.assertRaises(SyntaxError, tokenize_open, 'foobar')
|
|
self.assertTrue(m.closed)
|
|
|
|
|
|
class TestTokenize(TestCase):
|
|
|
|
def test_tokenize(self):
|
|
import tokenize as tokenize_module
|
|
encoding = object()
|
|
encoding_used = None
|
|
def mock_detect_encoding(readline):
|
|
return encoding, [b'first', b'second']
|
|
|
|
def mock__tokenize(readline, encoding):
|
|
nonlocal encoding_used
|
|
encoding_used = encoding
|
|
out = []
|
|
while True:
|
|
next_line = readline()
|
|
if next_line:
|
|
out.append(next_line)
|
|
continue
|
|
return out
|
|
|
|
counter = 0
|
|
def mock_readline():
|
|
nonlocal counter
|
|
counter += 1
|
|
if counter == 5:
|
|
return b''
|
|
return str(counter).encode()
|
|
|
|
orig_detect_encoding = tokenize_module.detect_encoding
|
|
orig__tokenize = tokenize_module._tokenize
|
|
tokenize_module.detect_encoding = mock_detect_encoding
|
|
tokenize_module._tokenize = mock__tokenize
|
|
try:
|
|
results = tokenize(mock_readline)
|
|
self.assertEqual(list(results),
|
|
[b'first', b'second', b'1', b'2', b'3', b'4'])
|
|
finally:
|
|
tokenize_module.detect_encoding = orig_detect_encoding
|
|
tokenize_module._tokenize = orig__tokenize
|
|
|
|
self.assertTrue(encoding_used, encoding)
|
|
|
|
def test_oneline_defs(self):
|
|
buf = []
|
|
for i in range(500):
|
|
buf.append('def i{i}(): return {i}'.format(i=i))
|
|
buf.append('OK')
|
|
buf = '\n'.join(buf)
|
|
|
|
# Test that 500 consequent, one-line defs is OK
|
|
toks = list(tokenize(BytesIO(buf.encode('utf-8')).readline))
|
|
self.assertEqual(toks[-2].string, 'OK') # [-1] is always ENDMARKER
|
|
|
|
def assertExactTypeEqual(self, opstr, *optypes):
|
|
tokens = list(tokenize(BytesIO(opstr.encode('utf-8')).readline))
|
|
num_optypes = len(optypes)
|
|
self.assertEqual(len(tokens), 2 + num_optypes)
|
|
self.assertEqual(token.tok_name[tokens[0].exact_type],
|
|
token.tok_name[ENCODING])
|
|
for i in range(num_optypes):
|
|
self.assertEqual(token.tok_name[tokens[i + 1].exact_type],
|
|
token.tok_name[optypes[i]])
|
|
self.assertEqual(token.tok_name[tokens[1 + num_optypes].exact_type],
|
|
token.tok_name[token.ENDMARKER])
|
|
|
|
def test_exact_type(self):
|
|
self.assertExactTypeEqual('()', token.LPAR, token.RPAR)
|
|
self.assertExactTypeEqual('[]', token.LSQB, token.RSQB)
|
|
self.assertExactTypeEqual(':', token.COLON)
|
|
self.assertExactTypeEqual(',', token.COMMA)
|
|
self.assertExactTypeEqual(';', token.SEMI)
|
|
self.assertExactTypeEqual('+', token.PLUS)
|
|
self.assertExactTypeEqual('-', token.MINUS)
|
|
self.assertExactTypeEqual('*', token.STAR)
|
|
self.assertExactTypeEqual('/', token.SLASH)
|
|
self.assertExactTypeEqual('|', token.VBAR)
|
|
self.assertExactTypeEqual('&', token.AMPER)
|
|
self.assertExactTypeEqual('<', token.LESS)
|
|
self.assertExactTypeEqual('>', token.GREATER)
|
|
self.assertExactTypeEqual('=', token.EQUAL)
|
|
self.assertExactTypeEqual('.', token.DOT)
|
|
self.assertExactTypeEqual('%', token.PERCENT)
|
|
self.assertExactTypeEqual('{}', token.LBRACE, token.RBRACE)
|
|
self.assertExactTypeEqual('==', token.EQEQUAL)
|
|
self.assertExactTypeEqual('!=', token.NOTEQUAL)
|
|
self.assertExactTypeEqual('<=', token.LESSEQUAL)
|
|
self.assertExactTypeEqual('>=', token.GREATEREQUAL)
|
|
self.assertExactTypeEqual('~', token.TILDE)
|
|
self.assertExactTypeEqual('^', token.CIRCUMFLEX)
|
|
self.assertExactTypeEqual('<<', token.LEFTSHIFT)
|
|
self.assertExactTypeEqual('>>', token.RIGHTSHIFT)
|
|
self.assertExactTypeEqual('**', token.DOUBLESTAR)
|
|
self.assertExactTypeEqual('+=', token.PLUSEQUAL)
|
|
self.assertExactTypeEqual('-=', token.MINEQUAL)
|
|
self.assertExactTypeEqual('*=', token.STAREQUAL)
|
|
self.assertExactTypeEqual('/=', token.SLASHEQUAL)
|
|
self.assertExactTypeEqual('%=', token.PERCENTEQUAL)
|
|
self.assertExactTypeEqual('&=', token.AMPEREQUAL)
|
|
self.assertExactTypeEqual('|=', token.VBAREQUAL)
|
|
self.assertExactTypeEqual('^=', token.CIRCUMFLEXEQUAL)
|
|
self.assertExactTypeEqual('^=', token.CIRCUMFLEXEQUAL)
|
|
self.assertExactTypeEqual('<<=', token.LEFTSHIFTEQUAL)
|
|
self.assertExactTypeEqual('>>=', token.RIGHTSHIFTEQUAL)
|
|
self.assertExactTypeEqual('**=', token.DOUBLESTAREQUAL)
|
|
self.assertExactTypeEqual('//', token.DOUBLESLASH)
|
|
self.assertExactTypeEqual('//=', token.DOUBLESLASHEQUAL)
|
|
self.assertExactTypeEqual('@', token.AT)
|
|
self.assertExactTypeEqual('@=', token.ATEQUAL)
|
|
|
|
self.assertExactTypeEqual('a**2+b**2==c**2',
|
|
NAME, token.DOUBLESTAR, NUMBER,
|
|
token.PLUS,
|
|
NAME, token.DOUBLESTAR, NUMBER,
|
|
token.EQEQUAL,
|
|
NAME, token.DOUBLESTAR, NUMBER)
|
|
self.assertExactTypeEqual('{1, 2, 3}',
|
|
token.LBRACE,
|
|
token.NUMBER, token.COMMA,
|
|
token.NUMBER, token.COMMA,
|
|
token.NUMBER,
|
|
token.RBRACE)
|
|
self.assertExactTypeEqual('^(x & 0x1)',
|
|
token.CIRCUMFLEX,
|
|
token.LPAR,
|
|
token.NAME, token.AMPER, token.NUMBER,
|
|
token.RPAR)
|
|
|
|
def test_pathological_trailing_whitespace(self):
|
|
# See http://bugs.python.org/issue16152
|
|
self.assertExactTypeEqual('@ ', token.AT)
|
|
|
|
|
|
class UntokenizeTest(TestCase):
|
|
|
|
def test_bad_input_order(self):
|
|
# raise if previous row
|
|
u = Untokenizer()
|
|
u.prev_row = 2
|
|
u.prev_col = 2
|
|
with self.assertRaises(ValueError) as cm:
|
|
u.add_whitespace((1,3))
|
|
self.assertEqual(cm.exception.args[0],
|
|
'start (1,3) precedes previous end (2,2)')
|
|
# raise if previous column in row
|
|
self.assertRaises(ValueError, u.add_whitespace, (2,1))
|
|
|
|
def test_backslash_continuation(self):
|
|
# The problem is that <whitespace>\<newline> leaves no token
|
|
u = Untokenizer()
|
|
u.prev_row = 1
|
|
u.prev_col = 1
|
|
u.tokens = []
|
|
u.add_whitespace((2, 0))
|
|
self.assertEqual(u.tokens, ['\\\n'])
|
|
u.prev_row = 2
|
|
u.add_whitespace((4, 4))
|
|
self.assertEqual(u.tokens, ['\\\n', '\\\n\\\n', ' '])
|
|
TestRoundtrip.check_roundtrip(self, 'a\n b\n c\n \\\n c\n')
|
|
|
|
def test_iter_compat(self):
|
|
u = Untokenizer()
|
|
token = (NAME, 'Hello')
|
|
tokens = [(ENCODING, 'utf-8'), token]
|
|
u.compat(token, iter([]))
|
|
self.assertEqual(u.tokens, ["Hello "])
|
|
u = Untokenizer()
|
|
self.assertEqual(u.untokenize(iter([token])), 'Hello ')
|
|
u = Untokenizer()
|
|
self.assertEqual(u.untokenize(iter(tokens)), 'Hello ')
|
|
self.assertEqual(u.encoding, 'utf-8')
|
|
self.assertEqual(untokenize(iter(tokens)), b'Hello ')
|
|
|
|
|
|
class TestRoundtrip(TestCase):
|
|
|
|
def check_roundtrip(self, f):
|
|
"""
|
|
Test roundtrip for `untokenize`. `f` is an open file or a string.
|
|
The source code in f is tokenized to both 5- and 2-tuples.
|
|
Both sequences are converted back to source code via
|
|
tokenize.untokenize(), and the latter tokenized again to 2-tuples.
|
|
The test fails if the 3 pair tokenizations do not match.
|
|
|
|
When untokenize bugs are fixed, untokenize with 5-tuples should
|
|
reproduce code that does not contain a backslash continuation
|
|
following spaces. A proper test should test this.
|
|
"""
|
|
# Get source code and original tokenizations
|
|
if isinstance(f, str):
|
|
code = f.encode('utf-8')
|
|
else:
|
|
code = f.read()
|
|
f.close()
|
|
readline = iter(code.splitlines(keepends=True)).__next__
|
|
tokens5 = list(tokenize(readline))
|
|
tokens2 = [tok[:2] for tok in tokens5]
|
|
# Reproduce tokens2 from pairs
|
|
bytes_from2 = untokenize(tokens2)
|
|
readline2 = iter(bytes_from2.splitlines(keepends=True)).__next__
|
|
tokens2_from2 = [tok[:2] for tok in tokenize(readline2)]
|
|
self.assertEqual(tokens2_from2, tokens2)
|
|
# Reproduce tokens2 from 5-tuples
|
|
bytes_from5 = untokenize(tokens5)
|
|
readline5 = iter(bytes_from5.splitlines(keepends=True)).__next__
|
|
tokens2_from5 = [tok[:2] for tok in tokenize(readline5)]
|
|
self.assertEqual(tokens2_from5, tokens2)
|
|
|
|
def test_roundtrip(self):
|
|
# There are some standard formatting practices that are easy to get right.
|
|
|
|
self.check_roundtrip("if x == 1:\n"
|
|
" print(x)\n")
|
|
self.check_roundtrip("# This is a comment\n"
|
|
"# This also")
|
|
|
|
# Some people use different formatting conventions, which makes
|
|
# untokenize a little trickier. Note that this test involves trailing
|
|
# whitespace after the colon. Note that we use hex escapes to make the
|
|
# two trailing blanks apparent in the expected output.
|
|
|
|
self.check_roundtrip("if x == 1 : \n"
|
|
" print(x)\n")
|
|
fn = support.findfile("tokenize_tests.txt")
|
|
with open(fn, 'rb') as f:
|
|
self.check_roundtrip(f)
|
|
self.check_roundtrip("if x == 1:\n"
|
|
" # A comment by itself.\n"
|
|
" print(x) # Comment here, too.\n"
|
|
" # Another comment.\n"
|
|
"after_if = True\n")
|
|
self.check_roundtrip("if (x # The comments need to go in the right place\n"
|
|
" == 1):\n"
|
|
" print('x==1')\n")
|
|
self.check_roundtrip("class Test: # A comment here\n"
|
|
" # A comment with weird indent\n"
|
|
" after_com = 5\n"
|
|
" def x(m): return m*5 # a one liner\n"
|
|
" def y(m): # A whitespace after the colon\n"
|
|
" return y*4 # 3-space indent\n")
|
|
|
|
# Some error-handling code
|
|
self.check_roundtrip("try: import somemodule\n"
|
|
"except ImportError: # comment\n"
|
|
" print('Can not import' # comment2\n)"
|
|
"else: print('Loaded')\n")
|
|
|
|
def test_continuation(self):
|
|
# Balancing continuation
|
|
self.check_roundtrip("a = (3,4, \n"
|
|
"5,6)\n"
|
|
"y = [3, 4,\n"
|
|
"5]\n"
|
|
"z = {'a': 5,\n"
|
|
"'b':15, 'c':True}\n"
|
|
"x = len(y) + 5 - a[\n"
|
|
"3] - a[2]\n"
|
|
"+ len(z) - z[\n"
|
|
"'b']\n")
|
|
|
|
def test_backslash_continuation(self):
|
|
# Backslash means line continuation, except for comments
|
|
self.check_roundtrip("x=1+\\\n"
|
|
"1\n"
|
|
"# This is a comment\\\n"
|
|
"# This also\n")
|
|
self.check_roundtrip("# Comment \\\n"
|
|
"x = 0")
|
|
|
|
def test_string_concatenation(self):
|
|
# Two string literals on the same line
|
|
self.check_roundtrip("'' ''")
|
|
|
|
def test_random_files(self):
|
|
# Test roundtrip on random python modules.
|
|
# pass the '-ucpu' option to process the full directory.
|
|
|
|
import glob, random
|
|
fn = support.findfile("tokenize_tests.txt")
|
|
tempdir = os.path.dirname(fn) or os.curdir
|
|
testfiles = glob.glob(os.path.join(tempdir, "test*.py"))
|
|
|
|
# Tokenize is broken on test_pep3131.py because regular expressions are
|
|
# broken on the obscure unicode identifiers in it. *sigh*
|
|
# With roundtrip extended to test the 5-tuple mode of untokenize,
|
|
# 7 more testfiles fail. Remove them also until the failure is diagnosed.
|
|
|
|
testfiles.remove(os.path.join(tempdir, "test_pep3131.py"))
|
|
for f in ('buffer', 'builtin', 'fileio', 'inspect', 'os', 'platform', 'sys'):
|
|
testfiles.remove(os.path.join(tempdir, "test_%s.py") % f)
|
|
|
|
if not support.is_resource_enabled("cpu"):
|
|
testfiles = random.sample(testfiles, 10)
|
|
|
|
for testfile in testfiles:
|
|
with open(testfile, 'rb') as f:
|
|
with self.subTest(file=testfile):
|
|
self.check_roundtrip(f)
|
|
|
|
|
|
def roundtrip(self, code):
|
|
if isinstance(code, str):
|
|
code = code.encode('utf-8')
|
|
return untokenize(tokenize(BytesIO(code).readline)).decode('utf-8')
|
|
|
|
def test_indentation_semantics_retained(self):
|
|
"""
|
|
Ensure that although whitespace might be mutated in a roundtrip,
|
|
the semantic meaning of the indentation remains consistent.
|
|
"""
|
|
code = "if False:\n\tx=3\n\tx=3\n"
|
|
codelines = self.roundtrip(code).split('\n')
|
|
self.assertEqual(codelines[1], codelines[2])
|
|
self.check_roundtrip(code)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|