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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
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3
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4 (function(mod) {
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5 if (typeof exports == "object" && typeof module == "object") // CommonJS
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6 mod(require("../../lib/codemirror"));
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7 else if (typeof define == "function" && define.amd) // AMD
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8 define(["../../lib/codemirror"], mod);
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9 else // Plain browser env
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10 mod(CodeMirror);
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11 })(function(CodeMirror) {
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12 "use strict";
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13
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14 function wordRegexp(words) {
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15 return new RegExp("^((" + words.join(")|(") + "))\\b");
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16 }
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17
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18 var wordOperators = wordRegexp(["and", "or", "not", "is"]);
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19 var commonKeywords = ["as", "assert", "break", "class", "continue",
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20 "def", "del", "elif", "else", "except", "finally",
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21 "for", "from", "global", "if", "import",
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22 "lambda", "pass", "raise", "return",
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23 "try", "while", "with", "yield", "in", "False", "True"];
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24 var commonBuiltins = ["abs", "all", "any", "bin", "bool", "bytearray", "callable", "chr",
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25 "classmethod", "compile", "complex", "delattr", "dict", "dir", "divmod",
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26 "enumerate", "eval", "filter", "float", "format", "frozenset",
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27 "getattr", "globals", "hasattr", "hash", "help", "hex", "id",
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28 "input", "int", "isinstance", "issubclass", "iter", "len",
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29 "list", "locals", "map", "max", "memoryview", "min", "next",
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30 "object", "oct", "open", "ord", "pow", "property", "range",
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31 "repr", "reversed", "round", "set", "setattr", "slice",
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32 "sorted", "staticmethod", "str", "sum", "super", "tuple",
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33 "type", "vars", "zip", "__import__", "NotImplemented",
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34 "Ellipsis", "__debug__"];
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35 CodeMirror.registerHelper("hintWords", "python", commonKeywords.concat(commonBuiltins).concat(["exec", "print"]));
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36
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37 function top(state) {
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38 return state.scopes[state.scopes.length - 1];
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39 }
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40
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41 CodeMirror.defineMode("python", function(conf, parserConf) {
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42 var ERRORCLASS = "error";
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43
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44 var delimiters = parserConf.delimiters || parserConf.singleDelimiters || /^[\(\)\[\]\{\}@,:`=;\.\\]/;
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45 // (Backwards-compatibility with old, cumbersome config system)
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46 var operators = [parserConf.singleOperators, parserConf.doubleOperators, parserConf.doubleDelimiters, parserConf.tripleDelimiters,
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47 parserConf.operators || /^([-+*/%\/&|^]=?|[<>=]+|\/\/=?|\*\*=?|!=|[~!@]|\.\.\.)/]
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48 for (var i = 0; i < operators.length; i++) if (!operators[i]) operators.splice(i--, 1)
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49
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50 var hangingIndent = parserConf.hangingIndent || conf.indentUnit;
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51
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52 var myKeywords = commonKeywords, myBuiltins = commonBuiltins;
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53 if (parserConf.extra_keywords != undefined)
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54 myKeywords = myKeywords.concat(parserConf.extra_keywords);
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55
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56 if (parserConf.extra_builtins != undefined)
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57 myBuiltins = myBuiltins.concat(parserConf.extra_builtins);
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58
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59 var py3 = !(parserConf.version && Number(parserConf.version) < 3)
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60 if (py3) {
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61 // since http://legacy.python.org/dev/peps/pep-0465/ @ is also an operator
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62 var identifiers = parserConf.identifiers|| /^[_A-Za-z\u00A1-\uFFFF][_A-Za-z0-9\u00A1-\uFFFF]*/;
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63 myKeywords = myKeywords.concat(["nonlocal", "None", "aiter", "anext", "async", "await", "breakpoint", "match", "case"]);
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64 myBuiltins = myBuiltins.concat(["ascii", "bytes", "exec", "print"]);
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65 var stringPrefixes = new RegExp("^(([rbuf]|(br)|(rb)|(fr)|(rf))?('{3}|\"{3}|['\"]))", "i");
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66 } else {
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67 var identifiers = parserConf.identifiers|| /^[_A-Za-z][_A-Za-z0-9]*/;
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68 myKeywords = myKeywords.concat(["exec", "print"]);
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69 myBuiltins = myBuiltins.concat(["apply", "basestring", "buffer", "cmp", "coerce", "execfile",
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70 "file", "intern", "long", "raw_input", "reduce", "reload",
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71 "unichr", "unicode", "xrange", "None"]);
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72 var stringPrefixes = new RegExp("^(([rubf]|(ur)|(br))?('{3}|\"{3}|['\"]))", "i");
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73 }
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74 var keywords = wordRegexp(myKeywords);
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75 var builtins = wordRegexp(myBuiltins);
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76
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77 // tokenizers
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78 function tokenBase(stream, state) {
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79 var sol = stream.sol() && state.lastToken != "\\"
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80 if (sol) state.indent = stream.indentation()
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81 // Handle scope changes
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82 if (sol && top(state).type == "py") {
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83 var scopeOffset = top(state).offset;
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84 if (stream.eatSpace()) {
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85 var lineOffset = stream.indentation();
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86 if (lineOffset > scopeOffset)
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87 pushPyScope(state);
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88 else if (lineOffset < scopeOffset && dedent(stream, state) && stream.peek() != "#")
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89 state.errorToken = true;
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90 return null;
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91 } else {
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92 var style = tokenBaseInner(stream, state);
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93 if (scopeOffset > 0 && dedent(stream, state))
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94 style += " " + ERRORCLASS;
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95 return style;
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96 }
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97 }
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98 return tokenBaseInner(stream, state);
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99 }
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100
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101 function tokenBaseInner(stream, state, inFormat) {
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102 if (stream.eatSpace()) return null;
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103
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104 // Handle Comments
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105 if (!inFormat && stream.match(/^#.*/)) return "comment";
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106
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107 // Handle Number Literals
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108 if (stream.match(/^[0-9\.]/, false)) {
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109 var floatLiteral = false;
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110 // Floats
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111 if (stream.match(/^[\d_]*\.\d+(e[\+\-]?\d+)?/i)) { floatLiteral = true; }
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112 if (stream.match(/^[\d_]+\.\d*/)) { floatLiteral = true; }
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113 if (stream.match(/^\.\d+/)) { floatLiteral = true; }
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114 if (floatLiteral) {
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115 // Float literals may be "imaginary"
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116 stream.eat(/J/i);
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117 return "number";
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118 }
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119 // Integers
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120 var intLiteral = false;
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121 // Hex
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122 if (stream.match(/^0x[0-9a-f_]+/i)) intLiteral = true;
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123 // Binary
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124 if (stream.match(/^0b[01_]+/i)) intLiteral = true;
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125 // Octal
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126 if (stream.match(/^0o[0-7_]+/i)) intLiteral = true;
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127 // Decimal
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128 if (stream.match(/^[1-9][\d_]*(e[\+\-]?[\d_]+)?/)) {
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129 // Decimal literals may be "imaginary"
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130 stream.eat(/J/i);
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131 // TODO - Can you have imaginary longs?
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132 intLiteral = true;
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133 }
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134 // Zero by itself with no other piece of number.
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135 if (stream.match(/^0(?![\dx])/i)) intLiteral = true;
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136 if (intLiteral) {
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137 // Integer literals may be "long"
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138 stream.eat(/L/i);
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139 return "number";
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140 }
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141 }
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142
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143 // Handle Strings
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144 if (stream.match(stringPrefixes)) {
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145 var isFmtString = stream.current().toLowerCase().indexOf('f') !== -1;
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146 if (!isFmtString) {
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147 state.tokenize = tokenStringFactory(stream.current(), state.tokenize);
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148 return state.tokenize(stream, state);
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149 } else {
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150 state.tokenize = formatStringFactory(stream.current(), state.tokenize);
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151 return state.tokenize(stream, state);
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152 }
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153 }
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154
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155 for (var i = 0; i < operators.length; i++)
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156 if (stream.match(operators[i])) return "operator"
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157
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158 if (stream.match(delimiters)) return "punctuation";
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159
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160 if (state.lastToken == "." && stream.match(identifiers))
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161 return "property";
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162
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163 if (stream.match(keywords) || stream.match(wordOperators))
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164 return "keyword";
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165
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166 if (stream.match(builtins))
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167 return "builtin";
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168
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169 if (stream.match(/^(self|cls)\b/))
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170 return "variable-2";
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171
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172 if (stream.match(identifiers)) {
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173 if (state.lastToken == "def" || state.lastToken == "class")
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174 return "def";
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175 return "variable";
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176 }
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177
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178 // Handle non-detected items
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179 stream.next();
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180 return inFormat ? null :ERRORCLASS;
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181 }
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182
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183 function formatStringFactory(delimiter, tokenOuter) {
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184 while ("rubf".indexOf(delimiter.charAt(0).toLowerCase()) >= 0)
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185 delimiter = delimiter.substr(1);
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186
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187 var singleline = delimiter.length == 1;
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188 var OUTCLASS = "string";
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189
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190 function tokenNestedExpr(depth) {
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191 return function(stream, state) {
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192 var inner = tokenBaseInner(stream, state, true)
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193 if (inner == "punctuation") {
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194 if (stream.current() == "{") {
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195 state.tokenize = tokenNestedExpr(depth + 1)
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196 } else if (stream.current() == "}") {
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197 if (depth > 1) state.tokenize = tokenNestedExpr(depth - 1)
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198 else state.tokenize = tokenString
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199 }
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200 }
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201 return inner
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202 }
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203 }
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204
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205 function tokenString(stream, state) {
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206 while (!stream.eol()) {
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207 stream.eatWhile(/[^'"\{\}\\]/);
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208 if (stream.eat("\\")) {
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209 stream.next();
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210 if (singleline && stream.eol())
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211 return OUTCLASS;
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212 } else if (stream.match(delimiter)) {
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213 state.tokenize = tokenOuter;
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214 return OUTCLASS;
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215 } else if (stream.match('{{')) {
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216 // ignore {{ in f-str
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217 return OUTCLASS;
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218 } else if (stream.match('{', false)) {
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219 // switch to nested mode
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220 state.tokenize = tokenNestedExpr(0)
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221 if (stream.current()) return OUTCLASS;
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222 else return state.tokenize(stream, state)
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223 } else if (stream.match('}}')) {
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224 return OUTCLASS;
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225 } else if (stream.match('}')) {
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226 // single } in f-string is an error
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227 return ERRORCLASS;
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228 } else {
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229 stream.eat(/['"]/);
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230 }
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231 }
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232 if (singleline) {
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233 if (parserConf.singleLineStringErrors)
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234 return ERRORCLASS;
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235 else
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236 state.tokenize = tokenOuter;
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237 }
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238 return OUTCLASS;
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239 }
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240 tokenString.isString = true;
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241 return tokenString;
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242 }
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243
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244 function tokenStringFactory(delimiter, tokenOuter) {
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245 while ("rubf".indexOf(delimiter.charAt(0).toLowerCase()) >= 0)
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246 delimiter = delimiter.substr(1);
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247
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248 var singleline = delimiter.length == 1;
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249 var OUTCLASS = "string";
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250
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251 function tokenString(stream, state) {
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252 while (!stream.eol()) {
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253 stream.eatWhile(/[^'"\\]/);
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254 if (stream.eat("\\")) {
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255 stream.next();
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256 if (singleline && stream.eol())
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257 return OUTCLASS;
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258 } else if (stream.match(delimiter)) {
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259 state.tokenize = tokenOuter;
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260 return OUTCLASS;
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261 } else {
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262 stream.eat(/['"]/);
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263 }
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264 }
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265 if (singleline) {
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266 if (parserConf.singleLineStringErrors)
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267 return ERRORCLASS;
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268 else
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269 state.tokenize = tokenOuter;
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270 }
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271 return OUTCLASS;
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272 }
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273 tokenString.isString = true;
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274 return tokenString;
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275 }
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276
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277 function pushPyScope(state) {
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278 while (top(state).type != "py") state.scopes.pop()
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279 state.scopes.push({offset: top(state).offset + conf.indentUnit,
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280 type: "py",
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281 align: null})
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282 }
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283
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284 function pushBracketScope(stream, state, type) {
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285 var align = stream.match(/^[\s\[\{\(]*(?:#|$)/, false) ? null : stream.column() + 1
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286 state.scopes.push({offset: state.indent + hangingIndent,
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287 type: type,
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288 align: align})
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289 }
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290
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291 function dedent(stream, state) {
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292 var indented = stream.indentation();
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293 while (state.scopes.length > 1 && top(state).offset > indented) {
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294 if (top(state).type != "py") return true;
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295 state.scopes.pop();
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296 }
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297 return top(state).offset != indented;
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298 }
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299
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300 function tokenLexer(stream, state) {
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301 if (stream.sol()) {
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302 state.beginningOfLine = true;
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303 state.dedent = false;
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304 }
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305
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306 var style = state.tokenize(stream, state);
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307 var current = stream.current();
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308
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309 // Handle decorators
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310 if (state.beginningOfLine && current == "@")
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311 return stream.match(identifiers, false) ? "meta" : py3 ? "operator" : ERRORCLASS;
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312
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313 if (/\S/.test(current)) state.beginningOfLine = false;
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314
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315 if ((style == "variable" || style == "builtin")
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316 && state.lastToken == "meta")
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317 style = "meta";
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318
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319 // Handle scope changes.
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320 if (current == "pass" || current == "return")
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321 state.dedent = true;
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322
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323 if (current == "lambda") state.lambda = true;
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324 if (current == ":" && !state.lambda && top(state).type == "py" && stream.match(/^\s*(?:#|$)/, false))
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325 pushPyScope(state);
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326
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327 if (current.length == 1 && !/string|comment/.test(style)) {
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328 var delimiter_index = "[({".indexOf(current);
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329 if (delimiter_index != -1)
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330 pushBracketScope(stream, state, "])}".slice(delimiter_index, delimiter_index+1));
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331
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332 delimiter_index = "])}".indexOf(current);
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333 if (delimiter_index != -1) {
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334 if (top(state).type == current) state.indent = state.scopes.pop().offset - hangingIndent
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335 else return ERRORCLASS;
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336 }
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337 }
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338 if (state.dedent && stream.eol() && top(state).type == "py" && state.scopes.length > 1)
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339 state.scopes.pop();
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340
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341 return style;
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342 }
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343
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344 var external = {
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345 startState: function(basecolumn) {
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346 return {
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347 tokenize: tokenBase,
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348 scopes: [{offset: basecolumn || 0, type: "py", align: null}],
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349 indent: basecolumn || 0,
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350 lastToken: null,
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351 lambda: false,
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352 dedent: 0
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353 };
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354 },
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355
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356 token: function(stream, state) {
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357 var addErr = state.errorToken;
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358 if (addErr) state.errorToken = false;
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359 var style = tokenLexer(stream, state);
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360
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361 if (style && style != "comment")
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362 state.lastToken = (style == "keyword" || style == "punctuation") ? stream.current() : style;
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363 if (style == "punctuation") style = null;
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364
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365 if (stream.eol() && state.lambda)
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366 state.lambda = false;
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367 return addErr ? style + " " + ERRORCLASS : style;
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368 },
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369
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370 indent: function(state, textAfter) {
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371 if (state.tokenize != tokenBase)
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372 return state.tokenize.isString ? CodeMirror.Pass : 0;
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373
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374 var scope = top(state)
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375 var closing = scope.type == textAfter.charAt(0) ||
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376 scope.type == "py" && !state.dedent && /^(else:|elif |except |finally:)/.test(textAfter)
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377 if (scope.align != null)
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378 return scope.align - (closing ? 1 : 0)
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379 else
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380 return scope.offset - (closing ? hangingIndent : 0)
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381 },
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382
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383 electricInput: /^\s*([\}\]\)]|else:|elif |except |finally:)$/,
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384 closeBrackets: {triples: "'\""},
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385 lineComment: "#",
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386 fold: "indent"
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387 };
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388 return external;
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389 });
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390
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391 CodeMirror.defineMIME("text/x-python", "python");
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392
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393 var words = function(str) { return str.split(" "); };
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394
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395 CodeMirror.defineMIME("text/x-cython", {
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396 name: "python",
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397 extra_keywords: words("by cdef cimport cpdef ctypedef enum except "+
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398 "extern gil include nogil property public "+
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399 "readonly struct union DEF IF ELIF ELSE")
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400 });
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401
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402 });
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