Mercurial > hgrepos > Python > libs > pygments-lexer-pseudocode2
annotate pygments_lexer_pseudocode2/algpseudocode.py @ 58:be065e5c8042
Prepare symbols for a statement which defaults to token type "Text".
While there make variables for the symbols to allow for easier changes.
| author | Franz Glasner <fzglas.hg@dom66.de> |
|---|---|
| date | Mon, 27 Apr 2026 19:07:02 +0200 |
| parents | e8f4af9e20a8 |
| children | 392745b66969 |
| rev | line source |
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1 |
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2 # -*- coding: utf-8 -*- |
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3 # :- |
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4 # SPDX-FileCopyrightText: © 2026 Franz Glasner |
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5 # SPDX-License-Identifier: MIT |
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6 # :- |
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7 r"""A pseudocode lexer along the lines of CTAN's algpseudocode or |
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8 algpseudocodex. |
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9 |
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10 """ |
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11 |
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12 __all__ = ["AlgPseudocodeLexer", |
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13 "AlgPseudocodeLexer_DE", "AlgPseudocodeLexer_FR"] |
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14 |
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15 |
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16 import re |
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| 57 | 18 import pygments.util |
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19 from pygments.lexer import include, bygroups |
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20 from pygments.token import (Comment, Keyword, Name, Text, Whitespace) |
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21 |
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22 # |
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23 # Relative imports do not work with pygments.lexers.load_lexer_from_file() |
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24 # in all of our supported Python releases. |
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25 # |
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26 from pygments_lexer_pseudocode2.bases import LexBase |
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27 |
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28 |
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29 class AlgPseudocodeLexer(LexBase): |
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30 |
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31 """A pseudocode lexer along the lines of CTAN's algpseudocode or |
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32 algpseudocodex. |
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33 |
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34 Some ideas (e.g. strings) are borrowed from Pygment's Python lexer. |
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35 |
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36 """ |
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37 |
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38 name = "AlgPseudocode" |
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39 aliases = ["algpseudocode", "algpseudo"] |
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40 filenames = ["*.algpseudo", "*.algpseudocode"] |
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41 mimetypes = [] |
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42 flags = re.MULTILINE |
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43 |
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44 LANG = "en" |
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45 TRANSLATIONS = { |
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46 "PROG": "PROGRAM", |
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47 "PROGRAM": "PROGRAM", |
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48 "ALGO": "ALGORITHM", |
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49 "ALGORITHM": "ALGORITHM", |
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50 "PROC": "PROCEDURE", |
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51 "PROCEDURE": "PROCEDURE", |
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52 "FUNC": "FUNCTION", |
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53 "FUNCTION": "FUNCTION", |
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54 "FN": "FUNCTION", |
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55 "CLASS": "CLASS", |
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56 } |
| 57 | 57 END_TRANSLATIONS = { |
| 58 "PROG": "END OF PROGRAM", | |
| 59 "PROGRAM": "END OF PROGRAM", | |
| 60 "ALGO": "END OF ALGORITHM", | |
| 61 "ALGORITHM": "END OF ALGORITHM", | |
| 62 "PROC": "END OF PROCEDURE", | |
| 63 "PROCEDURE": "END OF PROCEDURE", | |
| 64 "FUNC": "END OF FUNCTION", | |
| 65 "FUNCTION": "END OF FUNCTION", | |
| 66 "FN": "END OF FUNCTION", | |
| 67 "CLASS": "END OF CLASS", | |
| 68 } | |
| 69 DEFAULT_END_PREFIX = "END OF " | |
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70 SYMBOL_REMARK = "▷" # U+25B7: Unicode 1.0 (Geometric Shapes) |
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71 # SYMBOL_REMARK = "▻" # U+25BB: Unicode 1.0 (Geometric Shapes) |
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72 SYMBOL_BLOCK = "◆" # U+25C6: Unicode 1.0 (Geometric Shapes) |
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73 # SYMBOL_BLOCK = "┃" # U+2503: Unicode 1.0 (Bow Drawing) |
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74 # SYMBOL_BLOCK = "●" # U+25CF: Unicode 1.0 (Geometric Shapes) |
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75 SYMBOL_TEXTSTATEMENT = "■" # U+25A0: Unicode 1.0 (Geometric Shapes) |
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76 SYMBOLS = { |
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77 "REMARK": SYMBOL_REMARK, |
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78 "Remark": SYMBOL_REMARK, |
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79 "remark": SYMBOL_REMARK, |
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80 "REM": SYMBOL_REMARK, |
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81 "Rem": SYMBOL_REMARK, |
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82 "rem": SYMBOL_REMARK, |
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83 "R": SYMBOL_REMARK, |
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84 "r": SYMBOL_REMARK, |
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85 "BLOCK": SYMBOL_BLOCK, |
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86 "Block": SYMBOL_BLOCK, |
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87 "block": SYMBOL_BLOCK, |
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88 "TEXTSTATEMENT": SYMBOL_TEXTSTATEMENT, |
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89 "TextStatement": SYMBOL_TEXTSTATEMENT, |
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90 "textstatement": SYMBOL_TEXTSTATEMENT, |
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91 "TSTATEMENT": SYMBOL_TEXTSTATEMENT, |
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92 "TStatement": SYMBOL_TEXTSTATEMENT, |
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93 "tstatement": SYMBOL_TEXTSTATEMENT, |
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94 "TSTATE": SYMBOL_TEXTSTATEMENT, |
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95 "TState": SYMBOL_TEXTSTATEMENT, |
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96 "tstate": SYMBOL_TEXTSTATEMENT, |
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97 "TEXT": SYMBOL_TEXTSTATEMENT, |
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98 "Text": SYMBOL_TEXTSTATEMENT, |
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99 "text": SYMBOL_TEXTSTATEMENT, |
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100 } |
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101 |
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102 def op_translate(toktype): |
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103 |
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104 def _op_translate(lexer, match, ctx=None): |
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105 kw = match.group().upper() |
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106 yield match.start(), toktype, lexer.TRANSLATIONS.get(kw, kw) |
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107 |
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108 return _op_translate |
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109 |
| 57 | 110 def op_opt_end_translate(toktype): |
| 111 | |
| 112 def _op_end_translate(lexer, match, ctx=None): | |
| 113 if not lexer.no_end: | |
| 114 kw = match.group().upper() | |
| 115 yield (match.start(), | |
| 116 toktype, | |
| 117 lexer.END_TRANSLATIONS.get( | |
| 118 kw, | |
| 119 lexer.DEFAULT_END_PREFIX + kw)) | |
| 120 | |
| 121 return _op_end_translate | |
| 122 | |
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123 def op_symbol(toktype): |
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124 |
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125 def _op_symbol(lexer, match, ctx=None): |
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126 kw = match.group() |
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127 yield match.start(), toktype, lexer.SYMBOLS.get(kw, kw) |
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128 |
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129 return _op_symbol |
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130 |
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131 tokens = { |
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132 "root": [ |
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133 (r"\n", Whitespace), |
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134 (r"/\*", Comment.Multiline, "multiline-nested-comment"), |
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135 (r"//.*$", Comment.Single), |
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136 (r"(?:\\)(REMARK|Remark|remark|REM|Rem|rem|R|r)\b(.*)$", |
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137 bygroups(op_symbol(Comment.Single), Comment.Single)), |
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138 (r"(?:\\)(BLOCK|Block|block)\b(.*)$", |
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139 bygroups(op_symbol(Text), Text)), |
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140 (r"\\\n", Text), |
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141 (r"(?i)\\(" |
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142 r"(?:prog(?:ram)?)" |
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143 r"|(?:algo(?:rithm)?)" |
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144 r"|(?:proc(?:edure)?)" |
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145 r"|(?:func(?:tion)?|(?:fn))" |
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146 r"|(?:class)" |
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147 r")(\s*)(\{)", |
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148 bygroups(op_translate(Keyword), Whitespace, Name.Entity), |
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149 "entity-name"), |
| 57 | 150 # ENDxxx keywords with optional entity name |
| 151 # with name | |
| 152 (r"(?i)\\end(?:_|-)?(" | |
| 153 r"(?:prog(?:ram)?)" | |
| 154 r"|(?:algo(?:rithm)?)" | |
| 155 r"|(?:proc(?:edure)?)" | |
| 156 r"|(?:func(?:tion)?)" | |
| 157 r"|(?:class)" | |
| 158 r")(\s*)(\{)", | |
| 159 bygroups(op_opt_end_translate(Keyword), Whitespace, Name.Entity), | |
| 160 "entity-name"), | |
| 161 # without name | |
| 162 (r"(?i)\\end(?:_|-)?(" | |
| 163 r"(?:prog(?:ram)?)" | |
| 164 r"|(?:algo(?:rithm)?)" | |
| 165 r"|(?:proc(?:edure)?)" | |
| 166 r"|(?:func(?:tion)?)" | |
| 167 r"|(?:class)" | |
| 168 r")((\s*)(\{))?", | |
| 169 bygroups(op_opt_end_translate(Keyword))), | |
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170 include("expr"), |
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171 (r"\s+", Text), |
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172 ], |
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173 "entity-name": [ # may be multiline |
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174 (r"[^\\}]+", Name.Entity), |
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175 (r"\\\}", Name.Entity), |
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176 (r"\\", Name.Entity), |
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177 (r"\}", Name.Entity, "#pop"), |
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178 ], |
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179 "expr": [ |
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180 include("py-strings"), |
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181 include("py-numbers"), |
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182 include("py-name"), |
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183 ] |
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184 } |
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185 |
| 57 | 186 def __init__(self, **options): |
| 187 val = pygments.util.get_bool_opt(options, "no_end", default=False) | |
| 188 self.no_end = val | |
| 189 LexBase.__init__(self, **options) | |
| 190 | |
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191 |
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192 class AlgPseudocodeLexer_DE(AlgPseudocodeLexer): |
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193 |
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194 name = "AlgPseudocodeDE" |
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195 aliases = ["algpseudocode-de", "algpseudo-de"] |
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196 filenames = ["*.algpseudo-de", "*.algpseudocode-de"] |
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197 |
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198 LANG = "de" |
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199 TRANSLATIONS = AlgPseudocodeLexer.TRANSLATIONS.copy() |
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200 TRANSLATIONS.update({ |
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201 "PROG": "PROGRAMM", |
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202 "PROGRAM": "PROGRAMM", |
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203 "ALGO": "ALGORITHMUS", |
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204 "ALGORITHM": "ALGORITHMUS", |
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205 "PROC": "PROZEDUR", |
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206 "PROCEDURE": "PROZEDUR", |
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207 "FUNC": "FUNKTION", |
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208 "FUNCTION": "FUNKTION", |
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209 "FN": "FUNKTION", |
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210 "CLASS": "KLASSE", |
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211 }) |
| 57 | 212 END_TRANSLATIONS = AlgPseudocodeLexer.END_TRANSLATIONS.copy() |
| 213 END_TRANSLATIONS.update({ | |
| 214 "PROG": "ENDE DES PROGRAMMS", | |
| 215 "PROGRAM": "ENDE VON PROGRAMMS", | |
| 216 "ALGO": "ENDE DES ALGORITHMUS", | |
| 217 "ALGORITHM": "ENDE DES ALGORITHMUS", | |
| 218 "PROC": "ENDE DER PROZEDUR", | |
| 219 "PROCEDURE": "ENDE DER PROZEDUR", | |
| 220 "FUNC": "ENDE DER FUNKTION", | |
| 221 "FUNCTION": "ENDE DER FUNKTION", | |
| 222 "FN": "ENDE DER FUNKTION", | |
| 223 "CLASS": "ENDE DER KLASSE", | |
| 224 }) | |
| 225 DEFAULT_END_PREFIX = "ENDE VON " | |
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226 |
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227 |
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228 class AlgPseudocodeLexer_FR(AlgPseudocodeLexer): |
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229 |
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230 name = "AlgPseudocodeFR" |
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231 aliases = ["algpseudocode-fr", "algpseudo-fr"] |
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232 filenames = ["*.algpseudo-fr", "*.algpseudocode-fr"] |
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233 |
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234 LANG = "de" |
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235 TRANSLATIONS = AlgPseudocodeLexer.TRANSLATIONS.copy() |
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236 TRANSLATIONS.update({ |
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237 "PROG": "PROGRAMME", |
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238 "PROGRAM": "PROGRAMME", |
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239 "ALGO": "ALGORITHME", |
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240 "ALGORITHM": "ALGORITHME", |
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241 "PROC": "PROCÉDURE", |
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242 "PROCEDURE": "PROCÉDURE", |
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243 "FUNC": "FONCTION", |
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244 "FUNCTION": "FOUNCTION", |
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245 "FN": "FONCTION", |
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246 "CLASS": "CLASSE", |
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247 }) |
| 57 | 248 END_TRANSLATIONS = AlgPseudocodeLexer.END_TRANSLATIONS.copy() |
| 249 END_TRANSLATIONS.update({ | |
| 250 "PROG": "FIN DE PROGRAMME", | |
| 251 "PROGRAM": "FIN DE PROGRAMME", | |
| 252 "ALGO": "FIN D'ALGORITHME", | |
| 253 "ALGORITHM": "FIN D'ALGORITHME", | |
| 254 "PROC": "FIN DE PROCÉDURE", | |
| 255 "PROCEDURE": "FIN DE PROCÉDURE", | |
| 256 "FUNC": "FIN DE FONCTION", | |
| 257 "FUNCTION": "FIN DE FOUNCTION", | |
| 258 "FN": "FIN DE FONCTION", | |
| 259 "CLASS": "FIN DE CLASSE", | |
| 260 }) | |
| 261 DEFAULT_END_PREFIX = "FIN DE " |