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@@ -1,595 +1,595 b'' | |||||
1 | """Patched version of standard library tokenize, to deal with various bugs. |
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1 | """Patched version of standard library tokenize, to deal with various bugs. | |
2 |
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2 | |||
3 | Based on Python 3.2 code. |
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3 | Based on Python 3.2 code. | |
4 |
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4 | |||
5 | Patches: |
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5 | Patches: | |
6 |
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6 | |||
7 | - Gareth Rees' patch for Python issue #12691 (untokenizing) |
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7 | - Gareth Rees' patch for Python issue #12691 (untokenizing) | |
8 | - Except we don't encode the output of untokenize |
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8 | - Except we don't encode the output of untokenize | |
9 | - Python 2 compatible syntax, so that it can be byte-compiled at installation |
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9 | - Python 2 compatible syntax, so that it can be byte-compiled at installation | |
10 | - Newlines in comments and blank lines should be either NL or NEWLINE, depending |
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10 | - Newlines in comments and blank lines should be either NL or NEWLINE, depending | |
11 | on whether they are in a multi-line statement. Filed as Python issue #17061. |
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11 | on whether they are in a multi-line statement. Filed as Python issue #17061. | |
12 | - Export generate_tokens & TokenError |
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12 | - Export generate_tokens & TokenError | |
13 | - u and rb literals are allowed under Python 3.3 and above. |
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13 | - u and rb literals are allowed under Python 3.3 and above. | |
14 |
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14 | |||
15 | ------------------------------------------------------------------------------ |
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15 | ------------------------------------------------------------------------------ | |
16 | Tokenization help for Python programs. |
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16 | Tokenization help for Python programs. | |
17 |
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17 | |||
18 | tokenize(readline) is a generator that breaks a stream of bytes into |
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18 | tokenize(readline) is a generator that breaks a stream of bytes into | |
19 | Python tokens. It decodes the bytes according to PEP-0263 for |
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19 | Python tokens. It decodes the bytes according to PEP-0263 for | |
20 | determining source file encoding. |
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20 | determining source file encoding. | |
21 |
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21 | |||
22 | It accepts a readline-like method which is called repeatedly to get the |
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22 | It accepts a readline-like method which is called repeatedly to get the | |
23 | next line of input (or b"" for EOF). It generates 5-tuples with these |
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23 | next line of input (or b"" for EOF). It generates 5-tuples with these | |
24 | members: |
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24 | members: | |
25 |
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25 | |||
26 | the token type (see token.py) |
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26 | the token type (see token.py) | |
27 | the token (a string) |
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27 | the token (a string) | |
28 | the starting (row, column) indices of the token (a 2-tuple of ints) |
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28 | the starting (row, column) indices of the token (a 2-tuple of ints) | |
29 | the ending (row, column) indices of the token (a 2-tuple of ints) |
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29 | the ending (row, column) indices of the token (a 2-tuple of ints) | |
30 | the original line (string) |
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30 | the original line (string) | |
31 |
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31 | |||
32 | It is designed to match the working of the Python tokenizer exactly, except |
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32 | It is designed to match the working of the Python tokenizer exactly, except | |
33 | that it produces COMMENT tokens for comments and gives type OP for all |
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33 | that it produces COMMENT tokens for comments and gives type OP for all | |
34 | operators. Additionally, all token lists start with an ENCODING token |
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34 | operators. Additionally, all token lists start with an ENCODING token | |
35 | which tells you which encoding was used to decode the bytes stream. |
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35 | which tells you which encoding was used to decode the bytes stream. | |
36 | """ |
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36 | """ | |
37 | from __future__ import absolute_import |
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37 | from __future__ import absolute_import | |
38 |
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38 | |||
39 | __author__ = 'Ka-Ping Yee <ping@lfw.org>' |
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39 | __author__ = 'Ka-Ping Yee <ping@lfw.org>' | |
40 | __credits__ = ('GvR, ESR, Tim Peters, Thomas Wouters, Fred Drake, ' |
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40 | __credits__ = ('GvR, ESR, Tim Peters, Thomas Wouters, Fred Drake, ' | |
41 | 'Skip Montanaro, Raymond Hettinger, Trent Nelson, ' |
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41 | 'Skip Montanaro, Raymond Hettinger, Trent Nelson, ' | |
42 | 'Michael Foord') |
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42 | 'Michael Foord') | |
43 | import builtins |
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43 | import builtins | |
44 | import re |
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44 | import re | |
45 | import sys |
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45 | import sys | |
46 | from token import * |
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46 | from token import * | |
47 | from codecs import lookup, BOM_UTF8 |
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47 | from codecs import lookup, BOM_UTF8 | |
48 | import collections |
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48 | import collections | |
49 | from io import TextIOWrapper |
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49 | from io import TextIOWrapper | |
50 | cookie_re = re.compile("coding[:=]\s*([-\w.]+)") |
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50 | cookie_re = re.compile("coding[:=]\s*([-\w.]+)") | |
51 |
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51 | |||
52 | import token |
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52 | import token | |
53 | __all__ = token.__all__ + ["COMMENT", "tokenize", "detect_encoding", |
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53 | __all__ = token.__all__ + ["COMMENT", "tokenize", "detect_encoding", | |
54 | "NL", "untokenize", "ENCODING", "TokenInfo"] |
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54 | "NL", "untokenize", "ENCODING", "TokenInfo"] | |
55 | del token |
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55 | del token | |
56 |
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56 | |||
57 | __all__ += ["generate_tokens", "TokenError"] |
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57 | __all__ += ["generate_tokens", "TokenError"] | |
58 |
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58 | |||
59 | COMMENT = N_TOKENS |
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59 | COMMENT = N_TOKENS | |
60 | tok_name[COMMENT] = 'COMMENT' |
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60 | tok_name[COMMENT] = 'COMMENT' | |
61 | NL = N_TOKENS + 1 |
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61 | NL = N_TOKENS + 1 | |
62 | tok_name[NL] = 'NL' |
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62 | tok_name[NL] = 'NL' | |
63 | ENCODING = N_TOKENS + 2 |
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63 | ENCODING = N_TOKENS + 2 | |
64 | tok_name[ENCODING] = 'ENCODING' |
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64 | tok_name[ENCODING] = 'ENCODING' | |
65 | N_TOKENS += 3 |
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65 | N_TOKENS += 3 | |
66 |
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66 | |||
67 | class TokenInfo(collections.namedtuple('TokenInfo', 'type string start end line')): |
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67 | class TokenInfo(collections.namedtuple('TokenInfo', 'type string start end line')): | |
68 | def __repr__(self): |
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68 | def __repr__(self): | |
69 | annotated_type = '%d (%s)' % (self.type, tok_name[self.type]) |
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69 | annotated_type = '%d (%s)' % (self.type, tok_name[self.type]) | |
70 | return ('TokenInfo(type=%s, string=%r, start=%r, end=%r, line=%r)' % |
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70 | return ('TokenInfo(type=%s, string=%r, start=%r, end=%r, line=%r)' % | |
71 | self._replace(type=annotated_type)) |
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71 | self._replace(type=annotated_type)) | |
72 |
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72 | |||
73 | def group(*choices): return '(' + '|'.join(choices) + ')' |
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73 | def group(*choices): return '(' + '|'.join(choices) + ')' | |
74 | def any(*choices): return group(*choices) + '*' |
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74 | def any(*choices): return group(*choices) + '*' | |
75 | def maybe(*choices): return group(*choices) + '?' |
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75 | def maybe(*choices): return group(*choices) + '?' | |
76 |
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76 | |||
77 | # Note: we use unicode matching for names ("\w") but ascii matching for |
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77 | # Note: we use unicode matching for names ("\w") but ascii matching for | |
78 | # number literals. |
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78 | # number literals. | |
79 | Whitespace = r'[ \f\t]*' |
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79 | Whitespace = r'[ \f\t]*' | |
80 | Comment = r'#[^\r\n]*' |
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80 | Comment = r'#[^\r\n]*' | |
81 | Ignore = Whitespace + any(r'\\\r?\n' + Whitespace) + maybe(Comment) |
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81 | Ignore = Whitespace + any(r'\\\r?\n' + Whitespace) + maybe(Comment) | |
82 | Name = r'\w+' |
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82 | Name = r'\w+' | |
83 |
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83 | |||
84 | Hexnumber = r'0[xX][0-9a-fA-F]+' |
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84 | Hexnumber = r'0[xX][0-9a-fA-F]+' | |
85 | Binnumber = r'0[bB][01]+' |
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85 | Binnumber = r'0[bB][01]+' | |
86 | Octnumber = r'0[oO][0-7]+' |
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86 | Octnumber = r'0[oO][0-7]+' | |
87 | Decnumber = r'(?:0+|[1-9][0-9]*)' |
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87 | Decnumber = r'(?:0+|[1-9][0-9]*)' | |
88 | Intnumber = group(Hexnumber, Binnumber, Octnumber, Decnumber) |
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88 | Intnumber = group(Hexnumber, Binnumber, Octnumber, Decnumber) | |
89 | Exponent = r'[eE][-+]?[0-9]+' |
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89 | Exponent = r'[eE][-+]?[0-9]+' | |
90 | Pointfloat = group(r'[0-9]+\.[0-9]*', r'\.[0-9]+') + maybe(Exponent) |
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90 | Pointfloat = group(r'[0-9]+\.[0-9]*', r'\.[0-9]+') + maybe(Exponent) | |
91 | Expfloat = r'[0-9]+' + Exponent |
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91 | Expfloat = r'[0-9]+' + Exponent | |
92 | Floatnumber = group(Pointfloat, Expfloat) |
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92 | Floatnumber = group(Pointfloat, Expfloat) | |
93 | Imagnumber = group(r'[0-9]+[jJ]', Floatnumber + r'[jJ]') |
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93 | Imagnumber = group(r'[0-9]+[jJ]', Floatnumber + r'[jJ]') | |
94 | Number = group(Imagnumber, Floatnumber, Intnumber) |
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94 | Number = group(Imagnumber, Floatnumber, Intnumber) | |
95 |
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95 | |||
96 | if sys.version_info.minor >= 3: |
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96 | if sys.version_info.minor >= 3: | |
97 | StringPrefix = r'(?:[bB][rR]?|[rR][bB]?|[uU])?' |
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97 | StringPrefix = r'(?:[bB][rR]?|[rR][bB]?|[uU])?' | |
98 | else: |
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98 | else: | |
99 | StringPrefix = r'(?:[bB]?[rR]?)?' |
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99 | StringPrefix = r'(?:[bB]?[rR]?)?' | |
100 |
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100 | |||
101 | # Tail end of ' string. |
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101 | # Tail end of ' string. | |
102 | Single = r"[^'\\]*(?:\\.[^'\\]*)*'" |
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102 | Single = r"[^'\\]*(?:\\.[^'\\]*)*'" | |
103 | # Tail end of " string. |
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103 | # Tail end of " string. | |
104 | Double = r'[^"\\]*(?:\\.[^"\\]*)*"' |
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104 | Double = r'[^"\\]*(?:\\.[^"\\]*)*"' | |
105 | # Tail end of ''' string. |
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105 | # Tail end of ''' string. | |
106 | Single3 = r"[^'\\]*(?:(?:\\.|'(?!''))[^'\\]*)*'''" |
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106 | Single3 = r"[^'\\]*(?:(?:\\.|'(?!''))[^'\\]*)*'''" | |
107 | # Tail end of """ string. |
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107 | # Tail end of """ string. | |
108 | Double3 = r'[^"\\]*(?:(?:\\.|"(?!""))[^"\\]*)*"""' |
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108 | Double3 = r'[^"\\]*(?:(?:\\.|"(?!""))[^"\\]*)*"""' | |
109 | Triple = group(StringPrefix + "'''", StringPrefix + '"""') |
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109 | Triple = group(StringPrefix + "'''", StringPrefix + '"""') | |
110 | # Single-line ' or " string. |
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110 | # Single-line ' or " string. | |
111 | String = group(StringPrefix + r"'[^\n'\\]*(?:\\.[^\n'\\]*)*'", |
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111 | String = group(StringPrefix + r"'[^\n'\\]*(?:\\.[^\n'\\]*)*'", | |
112 | StringPrefix + r'"[^\n"\\]*(?:\\.[^\n"\\]*)*"') |
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112 | StringPrefix + r'"[^\n"\\]*(?:\\.[^\n"\\]*)*"') | |
113 |
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113 | |||
114 | # Because of leftmost-then-longest match semantics, be sure to put the |
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114 | # Because of leftmost-then-longest match semantics, be sure to put the | |
115 | # longest operators first (e.g., if = came before ==, == would get |
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115 | # longest operators first (e.g., if = came before ==, == would get | |
116 | # recognized as two instances of =). |
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116 | # recognized as two instances of =). | |
117 | Operator = group(r"\*\*=?", r">>=?", r"<<=?", r"!=", |
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117 | Operator = group(r"\*\*=?", r">>=?", r"<<=?", r"!=", | |
118 | r"//=?", r"->", |
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118 | r"//=?", r"->", | |
119 | r"[+\-*/%&|^=<>]=?", |
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119 | r"[+\-*/%&|^=<>]=?", | |
120 | r"~") |
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120 | r"~") | |
121 |
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121 | |||
122 | Bracket = '[][(){}]' |
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122 | Bracket = '[][(){}]' | |
123 | Special = group(r'\r?\n', r'\.\.\.', r'[:;.,@]') |
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123 | Special = group(r'\r?\n', r'\.\.\.', r'[:;.,@]') | |
124 | Funny = group(Operator, Bracket, Special) |
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124 | Funny = group(Operator, Bracket, Special) | |
125 |
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125 | |||
126 | PlainToken = group(Number, Funny, String, Name) |
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126 | PlainToken = group(Number, Funny, String, Name) | |
127 | Token = Ignore + PlainToken |
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127 | Token = Ignore + PlainToken | |
128 |
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128 | |||
129 | # First (or only) line of ' or " string. |
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129 | # First (or only) line of ' or " string. | |
130 | ContStr = group(StringPrefix + r"'[^\n'\\]*(?:\\.[^\n'\\]*)*" + |
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130 | ContStr = group(StringPrefix + r"'[^\n'\\]*(?:\\.[^\n'\\]*)*" + | |
131 | group("'", r'\\\r?\n'), |
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131 | group("'", r'\\\r?\n'), | |
132 | StringPrefix + r'"[^\n"\\]*(?:\\.[^\n"\\]*)*' + |
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132 | StringPrefix + r'"[^\n"\\]*(?:\\.[^\n"\\]*)*' + | |
133 | group('"', r'\\\r?\n')) |
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133 | group('"', r'\\\r?\n')) | |
134 | PseudoExtras = group(r'\\\r?\n', Comment, Triple) |
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134 | PseudoExtras = group(r'\\\r?\n', Comment, Triple) | |
135 | PseudoToken = Whitespace + group(PseudoExtras, Number, Funny, ContStr, Name) |
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135 | PseudoToken = Whitespace + group(PseudoExtras, Number, Funny, ContStr, Name) | |
136 |
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136 | |||
137 | def _compile(expr): |
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137 | def _compile(expr): | |
138 | return re.compile(expr, re.UNICODE) |
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138 | return re.compile(expr, re.UNICODE) | |
139 |
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139 | |||
140 | tokenprog, pseudoprog, single3prog, double3prog = map( |
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140 | tokenprog, pseudoprog, single3prog, double3prog = map( | |
141 | _compile, (Token, PseudoToken, Single3, Double3)) |
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141 | _compile, (Token, PseudoToken, Single3, Double3)) | |
142 | endprogs = {"'": _compile(Single), '"': _compile(Double), |
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142 | endprogs = {"'": _compile(Single), '"': _compile(Double), | |
143 | "'''": single3prog, '"""': double3prog, |
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143 | "'''": single3prog, '"""': double3prog, | |
144 | "r'''": single3prog, 'r"""': double3prog, |
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144 | "r'''": single3prog, 'r"""': double3prog, | |
145 | "b'''": single3prog, 'b"""': double3prog, |
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145 | "b'''": single3prog, 'b"""': double3prog, | |
146 | "R'''": single3prog, 'R"""': double3prog, |
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146 | "R'''": single3prog, 'R"""': double3prog, | |
147 | "B'''": single3prog, 'B"""': double3prog, |
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147 | "B'''": single3prog, 'B"""': double3prog, | |
148 | "br'''": single3prog, 'br"""': double3prog, |
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148 | "br'''": single3prog, 'br"""': double3prog, | |
149 | "bR'''": single3prog, 'bR"""': double3prog, |
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149 | "bR'''": single3prog, 'bR"""': double3prog, | |
150 | "Br'''": single3prog, 'Br"""': double3prog, |
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150 | "Br'''": single3prog, 'Br"""': double3prog, | |
151 | "BR'''": single3prog, 'BR"""': double3prog, |
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151 | "BR'''": single3prog, 'BR"""': double3prog, | |
152 | 'r': None, 'R': None, 'b': None, 'B': None} |
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152 | 'r': None, 'R': None, 'b': None, 'B': None} | |
153 |
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153 | |||
154 | triple_quoted = {} |
|
154 | triple_quoted = {} | |
155 | for t in ("'''", '"""', |
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155 | for t in ("'''", '"""', | |
156 | "r'''", 'r"""', "R'''", 'R"""', |
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156 | "r'''", 'r"""', "R'''", 'R"""', | |
157 | "b'''", 'b"""', "B'''", 'B"""', |
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157 | "b'''", 'b"""', "B'''", 'B"""', | |
158 | "br'''", 'br"""', "Br'''", 'Br"""', |
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158 | "br'''", 'br"""', "Br'''", 'Br"""', | |
159 | "bR'''", 'bR"""', "BR'''", 'BR"""'): |
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159 | "bR'''", 'bR"""', "BR'''", 'BR"""'): | |
160 | triple_quoted[t] = t |
|
160 | triple_quoted[t] = t | |
161 | single_quoted = {} |
|
161 | single_quoted = {} | |
162 | for t in ("'", '"', |
|
162 | for t in ("'", '"', | |
163 | "r'", 'r"', "R'", 'R"', |
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163 | "r'", 'r"', "R'", 'R"', | |
164 | "b'", 'b"', "B'", 'B"', |
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164 | "b'", 'b"', "B'", 'B"', | |
165 | "br'", 'br"', "Br'", 'Br"', |
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165 | "br'", 'br"', "Br'", 'Br"', | |
166 | "bR'", 'bR"', "BR'", 'BR"' ): |
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166 | "bR'", 'bR"', "BR'", 'BR"' ): | |
167 | single_quoted[t] = t |
|
167 | single_quoted[t] = t | |
168 |
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168 | |||
169 | if sys.version_info.minor >= 3: |
|
169 | if sys.version_info.minor >= 3: | |
170 | # Python 3.3 |
|
170 | # Python 3.3 | |
171 | for _prefix in ['rb', 'rB', 'Rb', 'RB', 'u', 'U']: |
|
171 | for _prefix in ['rb', 'rB', 'Rb', 'RB', 'u', 'U']: | |
172 | _t2 = prefix+'"""' |
|
172 | _t2 = _prefix+'"""' | |
173 | endprogs[_t2] = double3prog |
|
173 | endprogs[_t2] = double3prog | |
174 | triple_quoted[_t2] = _t2 |
|
174 | triple_quoted[_t2] = _t2 | |
175 | _t1 = prefix + "'''" |
|
175 | _t1 = _prefix + "'''" | |
176 | endprogs[_t1] = single3prog |
|
176 | endprogs[_t1] = single3prog | |
177 | triple_quoted[_t1] = _t1 |
|
177 | triple_quoted[_t1] = _t1 | |
178 | single_quoted[_prefix+'"'] = _prefix+'"' |
|
178 | single_quoted[_prefix+'"'] = _prefix+'"' | |
179 |
single_quoted[_prefix+"'"] |
|
179 | single_quoted[_prefix+"'"] = _prefix+"'" | |
180 | del _prefix, _t2, _t1 |
|
180 | del _prefix, _t2, _t1 | |
181 | endprogs['u'] = None |
|
181 | endprogs['u'] = None | |
182 | endprogs['U'] = None |
|
182 | endprogs['U'] = None | |
183 |
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183 | |||
184 | del _compile |
|
184 | del _compile | |
185 |
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185 | |||
186 | tabsize = 8 |
|
186 | tabsize = 8 | |
187 |
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187 | |||
188 | class TokenError(Exception): pass |
|
188 | class TokenError(Exception): pass | |
189 |
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189 | |||
190 | class StopTokenizing(Exception): pass |
|
190 | class StopTokenizing(Exception): pass | |
191 |
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191 | |||
192 |
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192 | |||
193 | class Untokenizer: |
|
193 | class Untokenizer: | |
194 |
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194 | |||
195 | def __init__(self): |
|
195 | def __init__(self): | |
196 | self.tokens = [] |
|
196 | self.tokens = [] | |
197 | self.prev_row = 1 |
|
197 | self.prev_row = 1 | |
198 | self.prev_col = 0 |
|
198 | self.prev_col = 0 | |
199 | self.encoding = 'utf-8' |
|
199 | self.encoding = 'utf-8' | |
200 |
|
200 | |||
201 | def add_whitespace(self, tok_type, start): |
|
201 | def add_whitespace(self, tok_type, start): | |
202 | row, col = start |
|
202 | row, col = start | |
203 | assert row >= self.prev_row |
|
203 | assert row >= self.prev_row | |
204 | col_offset = col - self.prev_col |
|
204 | col_offset = col - self.prev_col | |
205 | if col_offset > 0: |
|
205 | if col_offset > 0: | |
206 | self.tokens.append(" " * col_offset) |
|
206 | self.tokens.append(" " * col_offset) | |
207 | elif row > self.prev_row and tok_type not in (NEWLINE, NL, ENDMARKER): |
|
207 | elif row > self.prev_row and tok_type not in (NEWLINE, NL, ENDMARKER): | |
208 | # Line was backslash-continued. |
|
208 | # Line was backslash-continued. | |
209 | self.tokens.append(" ") |
|
209 | self.tokens.append(" ") | |
210 |
|
210 | |||
211 | def untokenize(self, tokens): |
|
211 | def untokenize(self, tokens): | |
212 | iterable = iter(tokens) |
|
212 | iterable = iter(tokens) | |
213 | for t in iterable: |
|
213 | for t in iterable: | |
214 | if len(t) == 2: |
|
214 | if len(t) == 2: | |
215 | self.compat(t, iterable) |
|
215 | self.compat(t, iterable) | |
216 | break |
|
216 | break | |
217 | tok_type, token, start, end = t[:4] |
|
217 | tok_type, token, start, end = t[:4] | |
218 | if tok_type == ENCODING: |
|
218 | if tok_type == ENCODING: | |
219 | self.encoding = token |
|
219 | self.encoding = token | |
220 | continue |
|
220 | continue | |
221 | self.add_whitespace(tok_type, start) |
|
221 | self.add_whitespace(tok_type, start) | |
222 | self.tokens.append(token) |
|
222 | self.tokens.append(token) | |
223 | self.prev_row, self.prev_col = end |
|
223 | self.prev_row, self.prev_col = end | |
224 | if tok_type in (NEWLINE, NL): |
|
224 | if tok_type in (NEWLINE, NL): | |
225 | self.prev_row += 1 |
|
225 | self.prev_row += 1 | |
226 | self.prev_col = 0 |
|
226 | self.prev_col = 0 | |
227 | return "".join(self.tokens) |
|
227 | return "".join(self.tokens) | |
228 |
|
228 | |||
229 | def compat(self, token, iterable): |
|
229 | def compat(self, token, iterable): | |
230 | # This import is here to avoid problems when the itertools |
|
230 | # This import is here to avoid problems when the itertools | |
231 | # module is not built yet and tokenize is imported. |
|
231 | # module is not built yet and tokenize is imported. | |
232 | from itertools import chain |
|
232 | from itertools import chain | |
233 | startline = False |
|
233 | startline = False | |
234 | prevstring = False |
|
234 | prevstring = False | |
235 | indents = [] |
|
235 | indents = [] | |
236 | toks_append = self.tokens.append |
|
236 | toks_append = self.tokens.append | |
237 |
|
237 | |||
238 | for tok in chain([token], iterable): |
|
238 | for tok in chain([token], iterable): | |
239 | toknum, tokval = tok[:2] |
|
239 | toknum, tokval = tok[:2] | |
240 | if toknum == ENCODING: |
|
240 | if toknum == ENCODING: | |
241 | self.encoding = tokval |
|
241 | self.encoding = tokval | |
242 | continue |
|
242 | continue | |
243 |
|
243 | |||
244 | if toknum in (NAME, NUMBER): |
|
244 | if toknum in (NAME, NUMBER): | |
245 | tokval += ' ' |
|
245 | tokval += ' ' | |
246 |
|
246 | |||
247 | # Insert a space between two consecutive strings |
|
247 | # Insert a space between two consecutive strings | |
248 | if toknum == STRING: |
|
248 | if toknum == STRING: | |
249 | if prevstring: |
|
249 | if prevstring: | |
250 | tokval = ' ' + tokval |
|
250 | tokval = ' ' + tokval | |
251 | prevstring = True |
|
251 | prevstring = True | |
252 | else: |
|
252 | else: | |
253 | prevstring = False |
|
253 | prevstring = False | |
254 |
|
254 | |||
255 | if toknum == INDENT: |
|
255 | if toknum == INDENT: | |
256 | indents.append(tokval) |
|
256 | indents.append(tokval) | |
257 | continue |
|
257 | continue | |
258 | elif toknum == DEDENT: |
|
258 | elif toknum == DEDENT: | |
259 | indents.pop() |
|
259 | indents.pop() | |
260 | continue |
|
260 | continue | |
261 | elif toknum in (NEWLINE, NL): |
|
261 | elif toknum in (NEWLINE, NL): | |
262 | startline = True |
|
262 | startline = True | |
263 | elif startline and indents: |
|
263 | elif startline and indents: | |
264 | toks_append(indents[-1]) |
|
264 | toks_append(indents[-1]) | |
265 | startline = False |
|
265 | startline = False | |
266 | toks_append(tokval) |
|
266 | toks_append(tokval) | |
267 |
|
267 | |||
268 |
|
268 | |||
269 | def untokenize(tokens): |
|
269 | def untokenize(tokens): | |
270 | """ |
|
270 | """ | |
271 | Convert ``tokens`` (an iterable) back into Python source code. Return |
|
271 | Convert ``tokens`` (an iterable) back into Python source code. Return | |
272 | a bytes object, encoded using the encoding specified by the last |
|
272 | a bytes object, encoded using the encoding specified by the last | |
273 | ENCODING token in ``tokens``, or UTF-8 if no ENCODING token is found. |
|
273 | ENCODING token in ``tokens``, or UTF-8 if no ENCODING token is found. | |
274 |
|
274 | |||
275 | The result is guaranteed to tokenize back to match the input so that |
|
275 | The result is guaranteed to tokenize back to match the input so that | |
276 | the conversion is lossless and round-trips are assured. The |
|
276 | the conversion is lossless and round-trips are assured. The | |
277 | guarantee applies only to the token type and token string as the |
|
277 | guarantee applies only to the token type and token string as the | |
278 | spacing between tokens (column positions) may change. |
|
278 | spacing between tokens (column positions) may change. | |
279 |
|
279 | |||
280 | :func:`untokenize` has two modes. If the input tokens are sequences |
|
280 | :func:`untokenize` has two modes. If the input tokens are sequences | |
281 | of length 2 (``type``, ``string``) then spaces are added as necessary to |
|
281 | of length 2 (``type``, ``string``) then spaces are added as necessary to | |
282 | preserve the round-trip property. |
|
282 | preserve the round-trip property. | |
283 |
|
283 | |||
284 | If the input tokens are sequences of length 4 or more (``type``, |
|
284 | If the input tokens are sequences of length 4 or more (``type``, | |
285 | ``string``, ``start``, ``end``), as returned by :func:`tokenize`, then |
|
285 | ``string``, ``start``, ``end``), as returned by :func:`tokenize`, then | |
286 | spaces are added so that each token appears in the result at the |
|
286 | spaces are added so that each token appears in the result at the | |
287 | position indicated by ``start`` and ``end``, if possible. |
|
287 | position indicated by ``start`` and ``end``, if possible. | |
288 | """ |
|
288 | """ | |
289 | return Untokenizer().untokenize(tokens) |
|
289 | return Untokenizer().untokenize(tokens) | |
290 |
|
290 | |||
291 |
|
291 | |||
292 | def _get_normal_name(orig_enc): |
|
292 | def _get_normal_name(orig_enc): | |
293 | """Imitates get_normal_name in tokenizer.c.""" |
|
293 | """Imitates get_normal_name in tokenizer.c.""" | |
294 | # Only care about the first 12 characters. |
|
294 | # Only care about the first 12 characters. | |
295 | enc = orig_enc[:12].lower().replace("_", "-") |
|
295 | enc = orig_enc[:12].lower().replace("_", "-") | |
296 | if enc == "utf-8" or enc.startswith("utf-8-"): |
|
296 | if enc == "utf-8" or enc.startswith("utf-8-"): | |
297 | return "utf-8" |
|
297 | return "utf-8" | |
298 | if enc in ("latin-1", "iso-8859-1", "iso-latin-1") or \ |
|
298 | if enc in ("latin-1", "iso-8859-1", "iso-latin-1") or \ | |
299 | enc.startswith(("latin-1-", "iso-8859-1-", "iso-latin-1-")): |
|
299 | enc.startswith(("latin-1-", "iso-8859-1-", "iso-latin-1-")): | |
300 | return "iso-8859-1" |
|
300 | return "iso-8859-1" | |
301 | return orig_enc |
|
301 | return orig_enc | |
302 |
|
302 | |||
303 | def detect_encoding(readline): |
|
303 | def detect_encoding(readline): | |
304 | """ |
|
304 | """ | |
305 | The detect_encoding() function is used to detect the encoding that should |
|
305 | The detect_encoding() function is used to detect the encoding that should | |
306 | be used to decode a Python source file. It requires one argment, readline, |
|
306 | be used to decode a Python source file. It requires one argment, readline, | |
307 | in the same way as the tokenize() generator. |
|
307 | in the same way as the tokenize() generator. | |
308 |
|
308 | |||
309 | It will call readline a maximum of twice, and return the encoding used |
|
309 | It will call readline a maximum of twice, and return the encoding used | |
310 | (as a string) and a list of any lines (left as bytes) it has read in. |
|
310 | (as a string) and a list of any lines (left as bytes) it has read in. | |
311 |
|
311 | |||
312 | It detects the encoding from the presence of a utf-8 bom or an encoding |
|
312 | It detects the encoding from the presence of a utf-8 bom or an encoding | |
313 | cookie as specified in pep-0263. If both a bom and a cookie are present, |
|
313 | cookie as specified in pep-0263. If both a bom and a cookie are present, | |
314 | but disagree, a SyntaxError will be raised. If the encoding cookie is an |
|
314 | but disagree, a SyntaxError will be raised. If the encoding cookie is an | |
315 | invalid charset, raise a SyntaxError. Note that if a utf-8 bom is found, |
|
315 | invalid charset, raise a SyntaxError. Note that if a utf-8 bom is found, | |
316 | 'utf-8-sig' is returned. |
|
316 | 'utf-8-sig' is returned. | |
317 |
|
317 | |||
318 | If no encoding is specified, then the default of 'utf-8' will be returned. |
|
318 | If no encoding is specified, then the default of 'utf-8' will be returned. | |
319 | """ |
|
319 | """ | |
320 | bom_found = False |
|
320 | bom_found = False | |
321 | encoding = None |
|
321 | encoding = None | |
322 | default = 'utf-8' |
|
322 | default = 'utf-8' | |
323 | def read_or_stop(): |
|
323 | def read_or_stop(): | |
324 | try: |
|
324 | try: | |
325 | return readline() |
|
325 | return readline() | |
326 | except StopIteration: |
|
326 | except StopIteration: | |
327 | return b'' |
|
327 | return b'' | |
328 |
|
328 | |||
329 | def find_cookie(line): |
|
329 | def find_cookie(line): | |
330 | try: |
|
330 | try: | |
331 | # Decode as UTF-8. Either the line is an encoding declaration, |
|
331 | # Decode as UTF-8. Either the line is an encoding declaration, | |
332 | # in which case it should be pure ASCII, or it must be UTF-8 |
|
332 | # in which case it should be pure ASCII, or it must be UTF-8 | |
333 | # per default encoding. |
|
333 | # per default encoding. | |
334 | line_string = line.decode('utf-8') |
|
334 | line_string = line.decode('utf-8') | |
335 | except UnicodeDecodeError: |
|
335 | except UnicodeDecodeError: | |
336 | raise SyntaxError("invalid or missing encoding declaration") |
|
336 | raise SyntaxError("invalid or missing encoding declaration") | |
337 |
|
337 | |||
338 | matches = cookie_re.findall(line_string) |
|
338 | matches = cookie_re.findall(line_string) | |
339 | if not matches: |
|
339 | if not matches: | |
340 | return None |
|
340 | return None | |
341 | encoding = _get_normal_name(matches[0]) |
|
341 | encoding = _get_normal_name(matches[0]) | |
342 | try: |
|
342 | try: | |
343 | codec = lookup(encoding) |
|
343 | codec = lookup(encoding) | |
344 | except LookupError: |
|
344 | except LookupError: | |
345 | # This behaviour mimics the Python interpreter |
|
345 | # This behaviour mimics the Python interpreter | |
346 | raise SyntaxError("unknown encoding: " + encoding) |
|
346 | raise SyntaxError("unknown encoding: " + encoding) | |
347 |
|
347 | |||
348 | if bom_found: |
|
348 | if bom_found: | |
349 | if encoding != 'utf-8': |
|
349 | if encoding != 'utf-8': | |
350 | # This behaviour mimics the Python interpreter |
|
350 | # This behaviour mimics the Python interpreter | |
351 | raise SyntaxError('encoding problem: utf-8') |
|
351 | raise SyntaxError('encoding problem: utf-8') | |
352 | encoding += '-sig' |
|
352 | encoding += '-sig' | |
353 | return encoding |
|
353 | return encoding | |
354 |
|
354 | |||
355 | first = read_or_stop() |
|
355 | first = read_or_stop() | |
356 | if first.startswith(BOM_UTF8): |
|
356 | if first.startswith(BOM_UTF8): | |
357 | bom_found = True |
|
357 | bom_found = True | |
358 | first = first[3:] |
|
358 | first = first[3:] | |
359 | default = 'utf-8-sig' |
|
359 | default = 'utf-8-sig' | |
360 | if not first: |
|
360 | if not first: | |
361 | return default, [] |
|
361 | return default, [] | |
362 |
|
362 | |||
363 | encoding = find_cookie(first) |
|
363 | encoding = find_cookie(first) | |
364 | if encoding: |
|
364 | if encoding: | |
365 | return encoding, [first] |
|
365 | return encoding, [first] | |
366 |
|
366 | |||
367 | second = read_or_stop() |
|
367 | second = read_or_stop() | |
368 | if not second: |
|
368 | if not second: | |
369 | return default, [first] |
|
369 | return default, [first] | |
370 |
|
370 | |||
371 | encoding = find_cookie(second) |
|
371 | encoding = find_cookie(second) | |
372 | if encoding: |
|
372 | if encoding: | |
373 | return encoding, [first, second] |
|
373 | return encoding, [first, second] | |
374 |
|
374 | |||
375 | return default, [first, second] |
|
375 | return default, [first, second] | |
376 |
|
376 | |||
377 |
|
377 | |||
378 | def open(filename): |
|
378 | def open(filename): | |
379 | """Open a file in read only mode using the encoding detected by |
|
379 | """Open a file in read only mode using the encoding detected by | |
380 | detect_encoding(). |
|
380 | detect_encoding(). | |
381 | """ |
|
381 | """ | |
382 | buffer = builtins.open(filename, 'rb') |
|
382 | buffer = builtins.open(filename, 'rb') | |
383 | encoding, lines = detect_encoding(buffer.readline) |
|
383 | encoding, lines = detect_encoding(buffer.readline) | |
384 | buffer.seek(0) |
|
384 | buffer.seek(0) | |
385 | text = TextIOWrapper(buffer, encoding, line_buffering=True) |
|
385 | text = TextIOWrapper(buffer, encoding, line_buffering=True) | |
386 | text.mode = 'r' |
|
386 | text.mode = 'r' | |
387 | return text |
|
387 | return text | |
388 |
|
388 | |||
389 |
|
389 | |||
390 | def tokenize(readline): |
|
390 | def tokenize(readline): | |
391 | """ |
|
391 | """ | |
392 | The tokenize() generator requires one argment, readline, which |
|
392 | The tokenize() generator requires one argment, readline, which | |
393 | must be a callable object which provides the same interface as the |
|
393 | must be a callable object which provides the same interface as the | |
394 | readline() method of built-in file objects. Each call to the function |
|
394 | readline() method of built-in file objects. Each call to the function | |
395 | should return one line of input as bytes. Alternately, readline |
|
395 | should return one line of input as bytes. Alternately, readline | |
396 | can be a callable function terminating with StopIteration: |
|
396 | can be a callable function terminating with StopIteration: | |
397 | readline = open(myfile, 'rb').__next__ # Example of alternate readline |
|
397 | readline = open(myfile, 'rb').__next__ # Example of alternate readline | |
398 |
|
398 | |||
399 | The generator produces 5-tuples with these members: the token type; the |
|
399 | The generator produces 5-tuples with these members: the token type; the | |
400 | token string; a 2-tuple (srow, scol) of ints specifying the row and |
|
400 | token string; a 2-tuple (srow, scol) of ints specifying the row and | |
401 | column where the token begins in the source; a 2-tuple (erow, ecol) of |
|
401 | column where the token begins in the source; a 2-tuple (erow, ecol) of | |
402 | ints specifying the row and column where the token ends in the source; |
|
402 | ints specifying the row and column where the token ends in the source; | |
403 | and the line on which the token was found. The line passed is the |
|
403 | and the line on which the token was found. The line passed is the | |
404 | logical line; continuation lines are included. |
|
404 | logical line; continuation lines are included. | |
405 |
|
405 | |||
406 | The first token sequence will always be an ENCODING token |
|
406 | The first token sequence will always be an ENCODING token | |
407 | which tells you which encoding was used to decode the bytes stream. |
|
407 | which tells you which encoding was used to decode the bytes stream. | |
408 | """ |
|
408 | """ | |
409 | # This import is here to avoid problems when the itertools module is not |
|
409 | # This import is here to avoid problems when the itertools module is not | |
410 | # built yet and tokenize is imported. |
|
410 | # built yet and tokenize is imported. | |
411 | from itertools import chain, repeat |
|
411 | from itertools import chain, repeat | |
412 | encoding, consumed = detect_encoding(readline) |
|
412 | encoding, consumed = detect_encoding(readline) | |
413 | rl_gen = iter(readline, b"") |
|
413 | rl_gen = iter(readline, b"") | |
414 | empty = repeat(b"") |
|
414 | empty = repeat(b"") | |
415 | return _tokenize(chain(consumed, rl_gen, empty).__next__, encoding) |
|
415 | return _tokenize(chain(consumed, rl_gen, empty).__next__, encoding) | |
416 |
|
416 | |||
417 |
|
417 | |||
418 | def _tokenize(readline, encoding): |
|
418 | def _tokenize(readline, encoding): | |
419 | lnum = parenlev = continued = 0 |
|
419 | lnum = parenlev = continued = 0 | |
420 | numchars = '0123456789' |
|
420 | numchars = '0123456789' | |
421 | contstr, needcont = '', 0 |
|
421 | contstr, needcont = '', 0 | |
422 | contline = None |
|
422 | contline = None | |
423 | indents = [0] |
|
423 | indents = [0] | |
424 |
|
424 | |||
425 | if encoding is not None: |
|
425 | if encoding is not None: | |
426 | if encoding == "utf-8-sig": |
|
426 | if encoding == "utf-8-sig": | |
427 | # BOM will already have been stripped. |
|
427 | # BOM will already have been stripped. | |
428 | encoding = "utf-8" |
|
428 | encoding = "utf-8" | |
429 | yield TokenInfo(ENCODING, encoding, (0, 0), (0, 0), '') |
|
429 | yield TokenInfo(ENCODING, encoding, (0, 0), (0, 0), '') | |
430 | while True: # loop over lines in stream |
|
430 | while True: # loop over lines in stream | |
431 | try: |
|
431 | try: | |
432 | line = readline() |
|
432 | line = readline() | |
433 | except StopIteration: |
|
433 | except StopIteration: | |
434 | line = b'' |
|
434 | line = b'' | |
435 |
|
435 | |||
436 | if encoding is not None: |
|
436 | if encoding is not None: | |
437 | line = line.decode(encoding) |
|
437 | line = line.decode(encoding) | |
438 | lnum += 1 |
|
438 | lnum += 1 | |
439 | pos, max = 0, len(line) |
|
439 | pos, max = 0, len(line) | |
440 |
|
440 | |||
441 | if contstr: # continued string |
|
441 | if contstr: # continued string | |
442 | if not line: |
|
442 | if not line: | |
443 | raise TokenError("EOF in multi-line string", strstart) |
|
443 | raise TokenError("EOF in multi-line string", strstart) | |
444 | endmatch = endprog.match(line) |
|
444 | endmatch = endprog.match(line) | |
445 | if endmatch: |
|
445 | if endmatch: | |
446 | pos = end = endmatch.end(0) |
|
446 | pos = end = endmatch.end(0) | |
447 | yield TokenInfo(STRING, contstr + line[:end], |
|
447 | yield TokenInfo(STRING, contstr + line[:end], | |
448 | strstart, (lnum, end), contline + line) |
|
448 | strstart, (lnum, end), contline + line) | |
449 | contstr, needcont = '', 0 |
|
449 | contstr, needcont = '', 0 | |
450 | contline = None |
|
450 | contline = None | |
451 | elif needcont and line[-2:] != '\\\n' and line[-3:] != '\\\r\n': |
|
451 | elif needcont and line[-2:] != '\\\n' and line[-3:] != '\\\r\n': | |
452 | yield TokenInfo(ERRORTOKEN, contstr + line, |
|
452 | yield TokenInfo(ERRORTOKEN, contstr + line, | |
453 | strstart, (lnum, len(line)), contline) |
|
453 | strstart, (lnum, len(line)), contline) | |
454 | contstr = '' |
|
454 | contstr = '' | |
455 | contline = None |
|
455 | contline = None | |
456 | continue |
|
456 | continue | |
457 | else: |
|
457 | else: | |
458 | contstr = contstr + line |
|
458 | contstr = contstr + line | |
459 | contline = contline + line |
|
459 | contline = contline + line | |
460 | continue |
|
460 | continue | |
461 |
|
461 | |||
462 | elif parenlev == 0 and not continued: # new statement |
|
462 | elif parenlev == 0 and not continued: # new statement | |
463 | if not line: break |
|
463 | if not line: break | |
464 | column = 0 |
|
464 | column = 0 | |
465 | while pos < max: # measure leading whitespace |
|
465 | while pos < max: # measure leading whitespace | |
466 | if line[pos] == ' ': |
|
466 | if line[pos] == ' ': | |
467 | column += 1 |
|
467 | column += 1 | |
468 | elif line[pos] == '\t': |
|
468 | elif line[pos] == '\t': | |
469 | column = (column//tabsize + 1)*tabsize |
|
469 | column = (column//tabsize + 1)*tabsize | |
470 | elif line[pos] == '\f': |
|
470 | elif line[pos] == '\f': | |
471 | column = 0 |
|
471 | column = 0 | |
472 | else: |
|
472 | else: | |
473 | break |
|
473 | break | |
474 | pos += 1 |
|
474 | pos += 1 | |
475 | if pos == max: |
|
475 | if pos == max: | |
476 | break |
|
476 | break | |
477 |
|
477 | |||
478 | if line[pos] in '#\r\n': # skip comments or blank lines |
|
478 | if line[pos] in '#\r\n': # skip comments or blank lines | |
479 | if line[pos] == '#': |
|
479 | if line[pos] == '#': | |
480 | comment_token = line[pos:].rstrip('\r\n') |
|
480 | comment_token = line[pos:].rstrip('\r\n') | |
481 | nl_pos = pos + len(comment_token) |
|
481 | nl_pos = pos + len(comment_token) | |
482 | yield TokenInfo(COMMENT, comment_token, |
|
482 | yield TokenInfo(COMMENT, comment_token, | |
483 | (lnum, pos), (lnum, pos + len(comment_token)), line) |
|
483 | (lnum, pos), (lnum, pos + len(comment_token)), line) | |
484 | yield TokenInfo(NEWLINE, line[nl_pos:], |
|
484 | yield TokenInfo(NEWLINE, line[nl_pos:], | |
485 | (lnum, nl_pos), (lnum, len(line)), line) |
|
485 | (lnum, nl_pos), (lnum, len(line)), line) | |
486 | else: |
|
486 | else: | |
487 | yield TokenInfo(NEWLINE, line[pos:], |
|
487 | yield TokenInfo(NEWLINE, line[pos:], | |
488 | (lnum, pos), (lnum, len(line)), line) |
|
488 | (lnum, pos), (lnum, len(line)), line) | |
489 | continue |
|
489 | continue | |
490 |
|
490 | |||
491 | if column > indents[-1]: # count indents or dedents |
|
491 | if column > indents[-1]: # count indents or dedents | |
492 | indents.append(column) |
|
492 | indents.append(column) | |
493 | yield TokenInfo(INDENT, line[:pos], (lnum, 0), (lnum, pos), line) |
|
493 | yield TokenInfo(INDENT, line[:pos], (lnum, 0), (lnum, pos), line) | |
494 | while column < indents[-1]: |
|
494 | while column < indents[-1]: | |
495 | if column not in indents: |
|
495 | if column not in indents: | |
496 | raise IndentationError( |
|
496 | raise IndentationError( | |
497 | "unindent does not match any outer indentation level", |
|
497 | "unindent does not match any outer indentation level", | |
498 | ("<tokenize>", lnum, pos, line)) |
|
498 | ("<tokenize>", lnum, pos, line)) | |
499 | indents = indents[:-1] |
|
499 | indents = indents[:-1] | |
500 | yield TokenInfo(DEDENT, '', (lnum, pos), (lnum, pos), line) |
|
500 | yield TokenInfo(DEDENT, '', (lnum, pos), (lnum, pos), line) | |
501 |
|
501 | |||
502 | else: # continued statement |
|
502 | else: # continued statement | |
503 | if not line: |
|
503 | if not line: | |
504 | raise TokenError("EOF in multi-line statement", (lnum, 0)) |
|
504 | raise TokenError("EOF in multi-line statement", (lnum, 0)) | |
505 | continued = 0 |
|
505 | continued = 0 | |
506 |
|
506 | |||
507 | while pos < max: |
|
507 | while pos < max: | |
508 | pseudomatch = pseudoprog.match(line, pos) |
|
508 | pseudomatch = pseudoprog.match(line, pos) | |
509 | if pseudomatch: # scan for tokens |
|
509 | if pseudomatch: # scan for tokens | |
510 | start, end = pseudomatch.span(1) |
|
510 | start, end = pseudomatch.span(1) | |
511 | spos, epos, pos = (lnum, start), (lnum, end), end |
|
511 | spos, epos, pos = (lnum, start), (lnum, end), end | |
512 | token, initial = line[start:end], line[start] |
|
512 | token, initial = line[start:end], line[start] | |
513 |
|
513 | |||
514 | if (initial in numchars or # ordinary number |
|
514 | if (initial in numchars or # ordinary number | |
515 | (initial == '.' and token != '.' and token != '...')): |
|
515 | (initial == '.' and token != '.' and token != '...')): | |
516 | yield TokenInfo(NUMBER, token, spos, epos, line) |
|
516 | yield TokenInfo(NUMBER, token, spos, epos, line) | |
517 | elif initial in '\r\n': |
|
517 | elif initial in '\r\n': | |
518 | yield TokenInfo(NL if parenlev > 0 else NEWLINE, |
|
518 | yield TokenInfo(NL if parenlev > 0 else NEWLINE, | |
519 | token, spos, epos, line) |
|
519 | token, spos, epos, line) | |
520 | elif initial == '#': |
|
520 | elif initial == '#': | |
521 | assert not token.endswith("\n") |
|
521 | assert not token.endswith("\n") | |
522 | yield TokenInfo(COMMENT, token, spos, epos, line) |
|
522 | yield TokenInfo(COMMENT, token, spos, epos, line) | |
523 | elif token in triple_quoted: |
|
523 | elif token in triple_quoted: | |
524 | endprog = endprogs[token] |
|
524 | endprog = endprogs[token] | |
525 | endmatch = endprog.match(line, pos) |
|
525 | endmatch = endprog.match(line, pos) | |
526 | if endmatch: # all on one line |
|
526 | if endmatch: # all on one line | |
527 | pos = endmatch.end(0) |
|
527 | pos = endmatch.end(0) | |
528 | token = line[start:pos] |
|
528 | token = line[start:pos] | |
529 | yield TokenInfo(STRING, token, spos, (lnum, pos), line) |
|
529 | yield TokenInfo(STRING, token, spos, (lnum, pos), line) | |
530 | else: |
|
530 | else: | |
531 | strstart = (lnum, start) # multiple lines |
|
531 | strstart = (lnum, start) # multiple lines | |
532 | contstr = line[start:] |
|
532 | contstr = line[start:] | |
533 | contline = line |
|
533 | contline = line | |
534 | break |
|
534 | break | |
535 | elif initial in single_quoted or \ |
|
535 | elif initial in single_quoted or \ | |
536 | token[:2] in single_quoted or \ |
|
536 | token[:2] in single_quoted or \ | |
537 | token[:3] in single_quoted: |
|
537 | token[:3] in single_quoted: | |
538 | if token[-1] == '\n': # continued string |
|
538 | if token[-1] == '\n': # continued string | |
539 | strstart = (lnum, start) |
|
539 | strstart = (lnum, start) | |
540 | endprog = (endprogs[initial] or endprogs[token[1]] or |
|
540 | endprog = (endprogs[initial] or endprogs[token[1]] or | |
541 | endprogs[token[2]]) |
|
541 | endprogs[token[2]]) | |
542 | contstr, needcont = line[start:], 1 |
|
542 | contstr, needcont = line[start:], 1 | |
543 | contline = line |
|
543 | contline = line | |
544 | break |
|
544 | break | |
545 | else: # ordinary string |
|
545 | else: # ordinary string | |
546 | yield TokenInfo(STRING, token, spos, epos, line) |
|
546 | yield TokenInfo(STRING, token, spos, epos, line) | |
547 | elif initial.isidentifier(): # ordinary name |
|
547 | elif initial.isidentifier(): # ordinary name | |
548 | yield TokenInfo(NAME, token, spos, epos, line) |
|
548 | yield TokenInfo(NAME, token, spos, epos, line) | |
549 | elif initial == '\\': # continued stmt |
|
549 | elif initial == '\\': # continued stmt | |
550 | continued = 1 |
|
550 | continued = 1 | |
551 | else: |
|
551 | else: | |
552 | if initial in '([{': |
|
552 | if initial in '([{': | |
553 | parenlev += 1 |
|
553 | parenlev += 1 | |
554 | elif initial in ')]}': |
|
554 | elif initial in ')]}': | |
555 | parenlev -= 1 |
|
555 | parenlev -= 1 | |
556 | yield TokenInfo(OP, token, spos, epos, line) |
|
556 | yield TokenInfo(OP, token, spos, epos, line) | |
557 | else: |
|
557 | else: | |
558 | yield TokenInfo(ERRORTOKEN, line[pos], |
|
558 | yield TokenInfo(ERRORTOKEN, line[pos], | |
559 | (lnum, pos), (lnum, pos+1), line) |
|
559 | (lnum, pos), (lnum, pos+1), line) | |
560 | pos += 1 |
|
560 | pos += 1 | |
561 |
|
561 | |||
562 | for indent in indents[1:]: # pop remaining indent levels |
|
562 | for indent in indents[1:]: # pop remaining indent levels | |
563 | yield TokenInfo(DEDENT, '', (lnum, 0), (lnum, 0), '') |
|
563 | yield TokenInfo(DEDENT, '', (lnum, 0), (lnum, 0), '') | |
564 | yield TokenInfo(ENDMARKER, '', (lnum, 0), (lnum, 0), '') |
|
564 | yield TokenInfo(ENDMARKER, '', (lnum, 0), (lnum, 0), '') | |
565 |
|
565 | |||
566 |
|
566 | |||
567 | # An undocumented, backwards compatible, API for all the places in the standard |
|
567 | # An undocumented, backwards compatible, API for all the places in the standard | |
568 | # library that expect to be able to use tokenize with strings |
|
568 | # library that expect to be able to use tokenize with strings | |
569 | def generate_tokens(readline): |
|
569 | def generate_tokens(readline): | |
570 | return _tokenize(readline, None) |
|
570 | return _tokenize(readline, None) | |
571 |
|
571 | |||
572 | if __name__ == "__main__": |
|
572 | if __name__ == "__main__": | |
573 | # Quick sanity check |
|
573 | # Quick sanity check | |
574 | s = b'''def parseline(self, line): |
|
574 | s = b'''def parseline(self, line): | |
575 | """Parse the line into a command name and a string containing |
|
575 | """Parse the line into a command name and a string containing | |
576 | the arguments. Returns a tuple containing (command, args, line). |
|
576 | the arguments. Returns a tuple containing (command, args, line). | |
577 | 'command' and 'args' may be None if the line couldn't be parsed. |
|
577 | 'command' and 'args' may be None if the line couldn't be parsed. | |
578 | """ |
|
578 | """ | |
579 | line = line.strip() |
|
579 | line = line.strip() | |
580 | if not line: |
|
580 | if not line: | |
581 | return None, None, line |
|
581 | return None, None, line | |
582 | elif line[0] == '?': |
|
582 | elif line[0] == '?': | |
583 | line = 'help ' + line[1:] |
|
583 | line = 'help ' + line[1:] | |
584 | elif line[0] == '!': |
|
584 | elif line[0] == '!': | |
585 | if hasattr(self, 'do_shell'): |
|
585 | if hasattr(self, 'do_shell'): | |
586 | line = 'shell ' + line[1:] |
|
586 | line = 'shell ' + line[1:] | |
587 | else: |
|
587 | else: | |
588 | return None, None, line |
|
588 | return None, None, line | |
589 | i, n = 0, len(line) |
|
589 | i, n = 0, len(line) | |
590 | while i < n and line[i] in self.identchars: i = i+1 |
|
590 | while i < n and line[i] in self.identchars: i = i+1 | |
591 | cmd, arg = line[:i], line[i:].strip() |
|
591 | cmd, arg = line[:i], line[i:].strip() | |
592 | return cmd, arg, line |
|
592 | return cmd, arg, line | |
593 | ''' |
|
593 | ''' | |
594 | for tok in tokenize(iter(s.splitlines()).__next__): |
|
594 | for tok in tokenize(iter(s.splitlines()).__next__): | |
595 | print(tok) |
|
595 | print(tok) |
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