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1 " Vim syntax file
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2 " Language: Python
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3 " Maintainer: Neil Schemenauer <nas@python.ca>
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4 " Last Change: 2009-10-13
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5 " Credits: Zvezdan Petkovic <zpetkovic@acm.org>
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6 " Neil Schemenauer <nas@python.ca>
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7 " Dmitry Vasiliev
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8 "
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9 " This version is a major rewrite by Zvezdan Petkovic.
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10 "
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11 " - introduced highlighting of doctests
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12 " - updated keywords, built-ins, and exceptions
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13 " - corrected regular expressions for
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14 "
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15 " * functions
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16 " * decorators
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17 " * strings
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18 " * escapes
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19 " * numbers
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20 " * space error
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21 "
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22 " - corrected synchronization
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23 " - more highlighting is ON by default, except
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24 " - space error highlighting is OFF by default
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25 "
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26 " Optional highlighting can be controlled using these variables.
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27 "
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28 " let python_no_builtin_highlight = 1
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29 " let python_no_doctest_code_highlight = 1
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30 " let python_no_doctest_highlight = 1
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31 " let python_no_exception_highlight = 1
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32 " let python_no_number_highlight = 1
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33 " let python_space_error_highlight = 1
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34 "
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35 " All the options above can be switched on together.
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36 "
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37 " let python_highlight_all = 1
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38 "
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39
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40 " For version 5.x: Clear all syntax items.
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41 " For version 6.x: Quit when a syntax file was already loaded.
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42 if version < 600
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43 syntax clear
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44 elseif exists("b:current_syntax")
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45 finish
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46 endif
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47
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48 " Keep Python keywords in alphabetical order inside groups for easy
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49 " comparison with the table in the 'Python Language Reference'
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50 " http://docs.python.org/reference/lexical_analysis.html#keywords.
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51 " Groups are in the order presented in NAMING CONVENTIONS in syntax.txt.
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52 " Exceptions come last at the end of each group (class and def below).
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53 "
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54 " Keywords 'with' and 'as' are new in Python 2.6
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55 " (use 'from __future__ import with_statement' in Python 2.5).
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56 "
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57 " Some compromises had to be made to support both Python 3.0 and 2.6.
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58 " We include Python 3.0 features, but when a definition is duplicated,
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59 " the last definition takes precedence.
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60 "
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61 " - 'False', 'None', and 'True' are keywords in Python 3.0 but they are
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62 " built-ins in 2.6 and will be highlighted as built-ins below.
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63 " - 'exec' is a built-in in Python 3.0 and will be highlighted as
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64 " built-in below.
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65 " - 'nonlocal' is a keyword in Python 3.0 and will be highlighted.
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66 " - 'print' is a built-in in Python 3.0 and will be highlighted as
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67 " built-in below (use 'from __future__ import print_function' in 2.6)
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68 "
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69 syn keyword pythonStatement False, None, True
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70 syn keyword pythonStatement as assert break continue del exec global
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71 syn keyword pythonStatement lambda nonlocal pass print return with yield
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72 syn keyword pythonStatement class def nextgroup=pythonFunction skipwhite
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73 syn keyword pythonConditional elif else if
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74 syn keyword pythonRepeat for while
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75 syn keyword pythonOperator and in is not or
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76 syn keyword pythonException except finally raise try
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77 syn keyword pythonInclude from import
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78
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79 " Decorators (new in Python 2.4)
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80 syn match pythonDecorator "@" display nextgroup=pythonFunction skipwhite
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81 " The zero-length non-grouping match before the function name is
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82 " extremely important in pythonFunction. Without it, everything is
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83 " interpreted as a function inside the contained environment of
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84 " doctests.
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85 " A dot must be allowed because of @MyClass.myfunc decorators.
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86 syn match pythonFunction
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87 \ "\%(\%(def\s\|class\s\|@\)\s*\)\@<=\h\%(\w\|\.\)*" contained
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88
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89 syn match pythonComment "#.*$" contains=pythonTodo,@Spell
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90 syn keyword pythonTodo FIXME NOTE NOTES TODO XXX contained
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91
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92 " Triple-quoted strings can contain doctests.
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93 syn region pythonString
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94 \ start=+[uU]\=\z(['"]\)+ end="\z1" skip="\\\\\|\\\z1"
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95 \ contains=pythonEscape,@Spell
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96 syn region pythonString
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97 \ start=+[uU]\=\z('''\|"""\)+ end="\z1" keepend
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98 \ contains=pythonEscape,pythonSpaceError,pythonDoctest,@Spell
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99 syn region pythonRawString
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100 \ start=+[uU]\=[rR]\z(['"]\)+ end="\z1" skip="\\\\\|\\\z1"
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101 \ contains=@Spell
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102 syn region pythonRawString
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103 \ start=+[uU]\=[rR]\z('''\|"""\)+ end="\z1" keepend
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104 \ contains=pythonSpaceError,pythonDoctest,@Spell
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105
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106 syn match pythonEscape +\\[abfnrtv'"\\]+ contained
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107 syn match pythonEscape "\\\o\{1,3}" contained
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108 syn match pythonEscape "\\x\x\{2}" contained
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109 syn match pythonEscape "\%(\\u\x\{4}\|\\U\x\{8}\)" contained
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110 " Python allows case-insensitive Unicode IDs: http://www.unicode.org/charts/
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111 syn match pythonEscape "\\N{\a\+\%(\s\a\+\)*}" contained
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112 syn match pythonEscape "\\$"
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113
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114 if exists("python_highlight_all")
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115 if exists("python_no_builtin_highlight")
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116 unlet python_no_builtin_highlight
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117 endif
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118 if exists("python_no_doctest_code_highlight")
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119 unlet python_no_doctest_code_highlight
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120 endif
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121 if exists("python_no_doctest_highlight")
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122 unlet python_no_doctest_highlight
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123 endif
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124 if exists("python_no_exception_highlight")
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125 unlet python_no_exception_highlight
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126 endif
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127 if exists("python_no_number_highlight")
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128 unlet python_no_number_highlight
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129 endif
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130 let python_space_error_highlight = 1
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131 endif
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132
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133 " It is very important to understand all details before changing the
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134 " regular expressions below or their order.
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135 " The word boundaries are *not* the floating-point number boundaries
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136 " because of a possible leading or trailing decimal point.
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137 " The expressions below ensure that all valid number literals are
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138 " highlighted, and invalid number literals are not. For example,
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139 "
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140 " - a decimal point in '4.' at the end of a line is highlighted,
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141 " - a second dot in 1.0.0 is not highlighted,
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142 " - 08 is not highlighted,
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143 " - 08e0 or 08j are highlighted,
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144 "
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145 " and so on, as specified in the 'Python Language Reference'.
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146 " http://docs.python.org/reference/lexical_analysis.html#numeric-literals
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147 if !exists("python_no_number_highlight")
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148 " numbers (including longs and complex)
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149 syn match pythonNumber "\<0[oO]\=\o\+[Ll]\=\>"
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150 syn match pythonNumber "\<0[xX]\x\+[Ll]\=\>"
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151 syn match pythonNumber "\<0[bB][01]\+[Ll]\=\>"
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152 syn match pythonNumber "\<\%([1-9]\d*\|0\)[Ll]\=\>"
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153 syn match pythonNumber "\<\d\+[jJ]\>"
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154 syn match pythonNumber "\<\d\+[eE][+-]\=\d\+[jJ]\=\>"
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155 syn match pythonNumber
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156 \ "\<\d\+\.\%([eE][+-]\=\d\+\)\=[jJ]\=\%(\W\|$\)\@="
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157 syn match pythonNumber
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158 \ "\%(^\|\W\)\@<=\d*\.\d\+\%([eE][+-]\=\d\+\)\=[jJ]\=\>"
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159 endif
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160
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161 " Group the built-ins in the order in the 'Python Library Reference' for
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162 " easier comparison.
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163 " http://docs.python.org/library/constants.html
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164 " http://docs.python.org/library/functions.html
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165 " http://docs.python.org/library/functions.html#non-essential-built-in-functions
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166 " Python built-in functions are in alphabetical order.
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167 if !exists("python_no_builtin_highlight")
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168 " built-in constants
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169 " 'False', 'True', and 'None' are also reserved words in Python 3.0
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170 syn keyword pythonBuiltin False True None
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171 syn keyword pythonBuiltin NotImplemented Ellipsis __debug__
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172 " built-in functions
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173 syn keyword pythonBuiltin abs all any bin bool chr classmethod
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174 syn keyword pythonBuiltin compile complex delattr dict dir divmod
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175 syn keyword pythonBuiltin enumerate eval filter float format
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176 syn keyword pythonBuiltin frozenset getattr globals hasattr hash
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177 syn keyword pythonBuiltin help hex id input int isinstance
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178 syn keyword pythonBuiltin issubclass iter len list locals map max
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179 syn keyword pythonBuiltin min next object oct open ord pow print
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180 syn keyword pythonBuiltin property range repr reversed round set
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181 syn keyword pythonBuiltin setattr slice sorted staticmethod str
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182 syn keyword pythonBuiltin sum super tuple type vars zip __import__
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183 " Python 2.6 only
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184 syn keyword pythonBuiltin basestring callable cmp execfile file
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185 syn keyword pythonBuiltin long raw_input reduce reload unichr
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186 syn keyword pythonBuiltin unicode xrange
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187 " Python 3.0 only
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188 syn keyword pythonBuiltin ascii bytearray bytes exec memoryview
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189 " non-essential built-in functions; Python 2.6 only
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190 syn keyword pythonBuiltin apply buffer coerce intern
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191 endif
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192
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193 " From the 'Python Library Reference' class hierarchy at the bottom.
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194 " http://docs.python.org/library/exceptions.html
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195 if !exists("python_no_exception_highlight")
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196 " builtin base exceptions (only used as base classes for other exceptions)
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197 syn keyword pythonExceptions BaseException Exception
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198 syn keyword pythonExceptions ArithmeticError EnvironmentError
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199 syn keyword pythonExceptions LookupError
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200 " builtin base exception removed in Python 3.0
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201 syn keyword pythonExceptions StandardError
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202 " builtin exceptions (actually raised)
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203 syn keyword pythonExceptions AssertionError AttributeError BufferError
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204 syn keyword pythonExceptions EOFError FloatingPointError GeneratorExit
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205 syn keyword pythonExceptions IOError ImportError IndentationError
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206 syn keyword pythonExceptions IndexError KeyError KeyboardInterrupt
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207 syn keyword pythonExceptions MemoryError NameError NotImplementedError
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208 syn keyword pythonExceptions OSError OverflowError ReferenceError
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209 syn keyword pythonExceptions RuntimeError StopIteration SyntaxError
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210 syn keyword pythonExceptions SystemError SystemExit TabError TypeError
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211 syn keyword pythonExceptions UnboundLocalError UnicodeError
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212 syn keyword pythonExceptions UnicodeDecodeError UnicodeEncodeError
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213 syn keyword pythonExceptions UnicodeTranslateError ValueError VMSError
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214 syn keyword pythonExceptions WindowsError ZeroDivisionError
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215 " builtin warnings
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216 syn keyword pythonExceptions BytesWarning DeprecationWarning FutureWarning
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217 syn keyword pythonExceptions ImportWarning PendingDeprecationWarning
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218 syn keyword pythonExceptions RuntimeWarning SyntaxWarning UnicodeWarning
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219 syn keyword pythonExceptions UserWarning Warning
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220 endif
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221
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222 if exists("python_space_error_highlight")
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223 " trailing whitespace
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224 syn match pythonSpaceError display excludenl "\s\+$"
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225 " mixed tabs and spaces
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226 syn match pythonSpaceError display " \+\t"
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227 syn match pythonSpaceError display "\t\+ "
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228 endif
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229
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230 " Do not spell doctests inside strings.
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231 " Notice that the end of a string, either ''', or """, will end the contained
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232 " doctest too. Thus, we do *not* need to have it as an end pattern.
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233 if !exists("python_no_doctest_highlight")
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234 if !exists("python_no_doctest_code_higlight")
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235 syn region pythonDoctest
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236 \ start="^\s*>>>\s" end="^\s*$"
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237 \ contained contains=ALLBUT,pythonDoctest,@Spell
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238 syn region pythonDoctestValue
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239 \ start=+^\s*\%(>>>\s\|\.\.\.\s\|"""\|'''\)\@!\S\++ end="$"
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240 \ contained
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241 else
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242 syn region pythonDoctest
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243 \ start="^\s*>>>" end="^\s*$"
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244 \ contained contains=@NoSpell
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245 endif
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246 endif
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247
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248 " Sync at the beginning of class, function, or method definition.
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249 syn sync match pythonSync grouphere NONE "^\s*\%(def\|class\)\s\+\h\w*\s*("
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250
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251 if version >= 508 || !exists("did_python_syn_inits")
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252 if version <= 508
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253 let did_python_syn_inits = 1
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254 command -nargs=+ HiLink hi link <args>
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255 else
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256 command -nargs=+ HiLink hi def link <args>
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257 endif
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258
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259 " The default highlight links. Can be overridden later.
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260 HiLink pythonStatement Statement
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261 HiLink pythonConditional Conditional
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262 HiLink pythonRepeat Repeat
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263 HiLink pythonOperator Operator
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264 HiLink pythonException Exception
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265 HiLink pythonInclude Include
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266 HiLink pythonDecorator Define
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267 HiLink pythonFunction Function
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268 HiLink pythonComment Comment
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269 HiLink pythonTodo Todo
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270 HiLink pythonString String
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271 HiLink pythonRawString String
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272 HiLink pythonEscape Special
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273 if !exists("python_no_number_highlight")
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274 HiLink pythonNumber Number
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275 endif
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276 if !exists("python_no_builtin_highlight")
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277 HiLink pythonBuiltin Function
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278 endif
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279 if !exists("python_no_exception_highlight")
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280 HiLink pythonExceptions Structure
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281 endif
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282 if exists("python_space_error_highlight")
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283 HiLink pythonSpaceError Error
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284 endif
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285 if !exists("python_no_doctest_highlight")
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286 HiLink pythonDoctest Special
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287 HiLink pythonDoctestValue Define
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288 endif
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289
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290 delcommand HiLink
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291 endif
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292
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293 let b:current_syntax = "python"
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294
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295 " vim:set sw=2 sts=2 ts=8 noet:
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