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1010 lines
38 KiB
Python
1010 lines
38 KiB
Python
doctests = """
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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 ENDMARK is omitted for
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brevity.
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>>> dump_tokens("1 + 1")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("if False:\\n"
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... " # NL\\n"
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... " True = False # NEWLINE\\n")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> indent_error_file = \"""
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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.encode('utf-8')).readline
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>>> for tok in tokenize(readline): pass
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Traceback (most recent call last):
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...
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IndentationError: unindent does not match any outer indentation level
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There are some standard formatting practices that are easy to get right.
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>>> roundtrip("if x == 1:\\n"
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... " print(x)\\n")
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True
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>>> roundtrip("# This is a comment\\n# This also")
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True
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Some people use different formatting conventions, which makes
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untokenize a little trickier. Note that this test involves trailing
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whitespace after the colon. Note that we use hex escapes to make the
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two trailing blanks apparent in the expected output.
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>>> roundtrip("if x == 1 : \\n"
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... " print(x)\\n")
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True
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>>> f = support.findfile("tokenize_tests.txt")
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>>> roundtrip(open(f, 'rb'))
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True
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>>> roundtrip("if x == 1:\\n"
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... " # A comment by itself.\\n"
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... " print(x) # Comment here, too.\\n"
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... " # Another comment.\\n"
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... "after_if = True\\n")
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True
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>>> roundtrip("if (x # The comments need to go in the right place\\n"
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... " == 1):\\n"
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... " print('x==1')\\n")
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True
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>>> roundtrip("class Test: # A comment here\\n"
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... " # A comment with weird indent\\n"
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... " after_com = 5\\n"
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... " def x(m): return m*5 # a one liner\\n"
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... " def y(m): # A whitespace after the colon\\n"
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... " return y*4 # 3-space indent\\n")
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True
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Some error-handling code
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>>> roundtrip("try: import somemodule\\n"
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... "except ImportError: # comment\\n"
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... " print('Can not import' # comment2\\n)"
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... "else: print('Loaded')\\n")
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True
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Balancing continuation
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>>> roundtrip("a = (3,4, \\n"
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... "5,6)\\n"
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... "y = [3, 4,\\n"
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... "5]\\n"
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... "z = {'a': 5,\\n"
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... "'b':15, 'c':True}\\n"
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... "x = len(y) + 5 - a[\\n"
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... "3] - a[2]\\n"
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... "+ len(z) - z[\\n"
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... "'b']\\n")
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True
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Ordinary integers and binary operators
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>>> dump_tokens("0xff <= 255")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("0b10 <= 255")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("0o123 <= 0O123")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("1234567 > ~0x15")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("2134568 != 1231515")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("(-124561-1) & 200000000")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("0xdeadbeef != -1")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("0xdeadc0de & 12345")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("0xFF & 0x15 | 1234")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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Long integers
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>>> dump_tokens("x = 0")
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ENCODING 'utf-8' (0, 0) (0, 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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>>> dump_tokens("x = 0xfffffffffff")
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ENCODING 'utf-8' (0, 0) (0, 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 '0xffffffffff (1, 4) (1, 17)
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>>> dump_tokens("x = 123141242151251616110")
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ENCODING 'utf-8' (0, 0) (0, 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 '123141242151 (1, 4) (1, 25)
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>>> dump_tokens("x = -15921590215012591")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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 '159215902150 (1, 5) (1, 22)
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Floating point numbers
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>>> dump_tokens("x = 3.14159")
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ENCODING 'utf-8' (0, 0) (0, 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 '3.14159' (1, 4) (1, 11)
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>>> dump_tokens("x = 314159.")
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ENCODING 'utf-8' (0, 0) (0, 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 '314159.' (1, 4) (1, 11)
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>>> dump_tokens("x = .314159")
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ENCODING 'utf-8' (0, 0) (0, 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 '.314159' (1, 4) (1, 11)
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>>> dump_tokens("x = 3e14159")
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ENCODING 'utf-8' (0, 0) (0, 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 '3e14159' (1, 4) (1, 11)
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>>> dump_tokens("x = 3E123")
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ENCODING 'utf-8' (0, 0) (0, 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 '3E123' (1, 4) (1, 9)
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>>> dump_tokens("x+y = 3e-1230")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("x = 3.14e159")
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ENCODING 'utf-8' (0, 0) (0, 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 '3.14e159' (1, 4) (1, 12)
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String literals
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>>> dump_tokens("x = ''; y = \\\"\\\"")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("x = '\\\"'; y = \\\"'\\\"")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("x = \\\"doesn't \\\"shrink\\\", does it\\\"")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("x = 'abc' + 'ABC'")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens('y = "ABC" + "ABC"')
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("x = r'abc' + r'ABC' + R'ABC' + R'ABC'")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens('y = r"abc" + r"ABC" + R"ABC" + R"ABC"')
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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Operators
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>>> dump_tokens("def d22(a, b, c=2, d=2, *k): pass")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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>>> dump_tokens("def d01v_(a=1, *k, **w): pass")
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ENCODING 'utf-8' (0, 0) (0, 0)
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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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Comparison
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>>> dump_tokens("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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ENCODING 'utf-8' (0, 0) (0, 0)
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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)
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NUMBER '1' (1, 16) (1, 17)
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OP '>=' (1, 18) (1, 20)
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NUMBER '5' (1, 21) (1, 22)
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OP '<=' (1, 23) (1, 25)
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NUMBER '0x15' (1, 26) (1, 30)
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OP '<=' (1, 31) (1, 33)
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NUMBER '0x12' (1, 34) (1, 38)
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|
OP '!=' (1, 39) (1, 41)
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NUMBER '1' (1, 42) (1, 43)
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|
NAME 'and' (1, 44) (1, 47)
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NUMBER '5' (1, 48) (1, 49)
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NAME 'in' (1, 50) (1, 52)
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NUMBER '1' (1, 53) (1, 54)
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|
NAME 'not' (1, 55) (1, 58)
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|
NAME 'in' (1, 59) (1, 61)
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|
NUMBER '1' (1, 62) (1, 63)
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NAME 'is' (1, 64) (1, 66)
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|
NUMBER '1' (1, 67) (1, 68)
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NAME 'or' (1, 69) (1, 71)
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|
NUMBER '5' (1, 72) (1, 73)
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NAME 'is' (1, 74) (1, 76)
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NAME 'not' (1, 77) (1, 80)
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NUMBER '1' (1, 81) (1, 82)
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OP ':' (1, 82) (1, 83)
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NAME 'pass' (1, 84) (1, 88)
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Shift
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>>> dump_tokens("x = 1 << 1 >> 5")
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ENCODING 'utf-8' (0, 0) (0, 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 '1' (1, 4) (1, 5)
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OP '<<' (1, 6) (1, 8)
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NUMBER '1' (1, 9) (1, 10)
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OP '>>' (1, 11) (1, 13)
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NUMBER '5' (1, 14) (1, 15)
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Additive
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>>> dump_tokens("x = 1 - y + 15 - 1 + 0x124 + z + a[5]")
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ENCODING 'utf-8' (0, 0) (0, 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 '1' (1, 4) (1, 5)
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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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NUMBER '15' (1, 12) (1, 14)
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OP '-' (1, 15) (1, 16)
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NUMBER '1' (1, 17) (1, 18)
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OP '+' (1, 19) (1, 20)
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NUMBER '0x124' (1, 21) (1, 26)
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OP '+' (1, 27) (1, 28)
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|
NAME 'z' (1, 29) (1, 30)
|
|
OP '+' (1, 31) (1, 32)
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|
NAME 'a' (1, 33) (1, 34)
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OP '[' (1, 34) (1, 35)
|
|
NUMBER '5' (1, 35) (1, 36)
|
|
OP ']' (1, 36) (1, 37)
|
|
|
|
Multiplicative
|
|
|
|
>>> dump_tokens("x = 1//1*1/5*12%0x12")
|
|
ENCODING 'utf-8' (0, 0) (0, 0)
|
|
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)
|
|
|
|
Unary
|
|
|
|
>>> dump_tokens("~1 ^ 1 & 1 |1 ^ -1")
|
|
ENCODING 'utf-8' (0, 0) (0, 0)
|
|
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)
|
|
>>> dump_tokens("-1*1/1+1*1//1 - ---1**1")
|
|
ENCODING 'utf-8' (0, 0) (0, 0)
|
|
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)
|
|
|
|
Selector
|
|
|
|
>>> dump_tokens("import sys, time\\nx = sys.modules['time'].time()")
|
|
ENCODING 'utf-8' (0, 0) (0, 0)
|
|
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)
|
|
|
|
Methods
|
|
|
|
>>> dump_tokens("@staticmethod\\ndef foo(x,y): pass")
|
|
ENCODING 'utf-8' (0, 0) (0, 0)
|
|
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)
|
|
|
|
Backslash means line continuation, except for comments
|
|
|
|
>>> roundtrip("x=1+\\\\n"
|
|
... "1\\n"
|
|
... "# This is a comment\\\\n"
|
|
... "# This also\\n")
|
|
True
|
|
>>> roundtrip("# Comment \\\\nx = 0")
|
|
True
|
|
|
|
Two string literals on the same line
|
|
|
|
>>> roundtrip("'' ''")
|
|
True
|
|
|
|
Test roundtrip on random python modules.
|
|
pass the '-ucpu' option to process the full directory.
|
|
|
|
>>> import random
|
|
>>> tempdir = os.path.dirname(f) 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*
|
|
>>> testfiles.remove(os.path.join(tempdir, "test_pep3131.py"))
|
|
>>> if not support.is_resource_enabled("cpu"):
|
|
... testfiles = random.sample(testfiles, 10)
|
|
...
|
|
>>> for testfile in testfiles:
|
|
... if not roundtrip(open(testfile, 'rb')):
|
|
... print("Roundtrip failed for file %s" % testfile)
|
|
... break
|
|
... else: True
|
|
True
|
|
|
|
Evil tabs
|
|
|
|
>>> dump_tokens("def f():\\n\\tif x\\n \\tpass")
|
|
ENCODING 'utf-8' (0, 0) (0, 0)
|
|
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)
|
|
|
|
Non-ascii identifiers
|
|
|
|
>>> dump_tokens("Örter = 'places'\\ngrün = 'green'")
|
|
ENCODING 'utf-8' (0, 0) (0, 0)
|
|
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)
|
|
"""
|
|
|
|
from test import support
|
|
from tokenize import (tokenize, _tokenize, untokenize, NUMBER, NAME, OP,
|
|
STRING, ENDMARKER, ENCODING, tok_name, detect_encoding,
|
|
open as tokenize_open)
|
|
from io import BytesIO
|
|
from unittest import TestCase
|
|
import os, sys, glob
|
|
import token
|
|
|
|
def dump_tokens(s):
|
|
"""Print out the tokens in s in a table format.
|
|
|
|
The ENDMARKER is omitted.
|
|
"""
|
|
f = BytesIO(s.encode('utf-8'))
|
|
for type, token, start, end, line in tokenize(f.readline):
|
|
if type == ENDMARKER:
|
|
break
|
|
type = tok_name[type]
|
|
print("%(type)-10.10s %(token)-13.13r %(start)s %(end)s" % locals())
|
|
|
|
def roundtrip(f):
|
|
"""
|
|
Test roundtrip for `untokenize`. `f` is an open file or a string.
|
|
The source code in f is tokenized, converted back to source code via
|
|
tokenize.untokenize(), and tokenized again from the latter. The test
|
|
fails if the second tokenization doesn't match the first.
|
|
"""
|
|
if isinstance(f, str):
|
|
f = BytesIO(f.encode('utf-8'))
|
|
try:
|
|
token_list = list(tokenize(f.readline))
|
|
finally:
|
|
f.close()
|
|
tokens1 = [tok[:2] for tok in token_list]
|
|
new_bytes = untokenize(tokens1)
|
|
readline = (line for line in new_bytes.splitlines(keepends=True)).__next__
|
|
tokens2 = [tok[:2] for tok in tokenize(readline)]
|
|
return tokens1 == tokens2
|
|
|
|
# This is an example from the docs, set up as a doctest.
|
|
def decistmt(s):
|
|
"""Substitute Decimals for floats in a string of statements.
|
|
|
|
>>> from decimal import Decimal
|
|
>>> s = 'print(+21.3e-5*-.1234/81.7)'
|
|
>>> decistmt(s)
|
|
"print (+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.
|
|
|
|
>>> exec(s) #doctest: +ELLIPSIS
|
|
-3.2171603427...e-0...7
|
|
|
|
Output from calculations with Decimal should be identical across all
|
|
platforms.
|
|
|
|
>>> exec(decistmt(s))
|
|
-3.217160342717258261933904529E-7
|
|
"""
|
|
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 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)
|
|
return roundtrip(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.assertTrue(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.assertTrue(self._testFile(f))
|
|
|
|
def test_utf8_coding_cookie_and_utf8_bom(self):
|
|
f = 'tokenize_tests-utf8-coding-cookie-and-utf8-bom-sig.txt'
|
|
self.assertTrue(self._testFile(f))
|
|
|
|
|
|
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_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_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_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')
|
|
|
|
class TestTokenize(TestCase):
|
|
|
|
def test_tokenize(self):
|
|
import tokenize as tokenize_module
|
|
encoding = object()
|
|
encoding_used = None
|
|
def mock_detect_encoding(readline):
|
|
return encoding, ['first', '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 counter
|
|
|
|
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), ['first', 'second', 1, 2, 3, 4])
|
|
finally:
|
|
tokenize_module.detect_encoding = orig_detect_encoding
|
|
tokenize_module._tokenize = orig__tokenize
|
|
|
|
self.assertTrue(encoding_used, encoding)
|
|
|
|
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('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)
|
|
|
|
__test__ = {"doctests" : doctests, 'decistmt': decistmt}
|
|
|
|
def test_main():
|
|
from test import test_tokenize
|
|
support.run_doctest(test_tokenize, True)
|
|
support.run_unittest(TestTokenizerAdheresToPep0263)
|
|
support.run_unittest(Test_Tokenize)
|
|
support.run_unittest(TestDetectEncoding)
|
|
support.run_unittest(TestTokenize)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|