Mercurial > hgrepos > Python > libs > pygments-lexer-pseudocode2
annotate pygments_lexer_pseudocode2/algpseudocode.py @ 67:3ccfa7f45044
Minimum Pygments version is 2.2
| author | Franz Glasner <fzglas.hg@dom66.de> |
|---|---|
| date | Tue, 28 Apr 2026 15:16:06 +0200 |
| parents | 3f4223a79d2b |
| children | 5517b0be67f0 |
| 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 "IS": "IS", |
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57 } |
| 57 | 58 END_TRANSLATIONS = { |
| 59 "PROG": "END OF PROGRAM", | |
| 60 "PROGRAM": "END OF PROGRAM", | |
| 61 "ALGO": "END OF ALGORITHM", | |
| 62 "ALGORITHM": "END OF ALGORITHM", | |
| 63 "PROC": "END OF PROCEDURE", | |
| 64 "PROCEDURE": "END OF PROCEDURE", | |
| 65 "FUNC": "END OF FUNCTION", | |
| 66 "FUNCTION": "END OF FUNCTION", | |
| 67 "FN": "END OF FUNCTION", | |
| 68 "CLASS": "END OF CLASS", | |
| 69 } | |
| 70 DEFAULT_END_PREFIX = "END OF " | |
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71 SYMBOL_REMARK = "▷" # U+25B7: Unicode 1.0 (Geometric Shapes) |
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72 # SYMBOL_REMARK = "▻" # U+25BB: Unicode 1.0 (Geometric Shapes) |
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73 SYMBOL_BLOCK = "◆" # U+25C6: Unicode 1.0 (Geometric Shapes) |
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74 # SYMBOL_BLOCK = "┃" # U+2503: Unicode 1.0 (Bow Drawing) |
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75 # SYMBOL_BLOCK = "●" # U+25CF: Unicode 1.0 (Geometric Shapes) |
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76 SYMBOL_TEXTSTATEMENT = "■" # U+25A0: Unicode 1.0 (Geometric Shapes) |
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77 SYMBOLS = { |
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78 "REMARK": SYMBOL_REMARK, |
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79 "REM": SYMBOL_REMARK, |
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80 "BLOCK": SYMBOL_BLOCK, |
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81 "TEXTSTATEMENT": SYMBOL_TEXTSTATEMENT, |
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82 "TSTATEMENT": SYMBOL_TEXTSTATEMENT, |
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83 "TSTATE": SYMBOL_TEXTSTATEMENT, |
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84 "TEXT": SYMBOL_TEXTSTATEMENT, |
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85 } |
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86 |
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87 def op_translate(toktype): |
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88 |
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89 def _op_translate(lexer, match, ctx=None): |
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90 kw = match.group().upper() |
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91 yield match.start(), toktype, lexer.TRANSLATIONS.get(kw, kw) |
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92 |
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93 return _op_translate |
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94 |
| 57 | 95 def op_opt_end_translate(toktype): |
| 96 | |
| 97 def _op_end_translate(lexer, match, ctx=None): | |
| 98 if not lexer.no_end: | |
| 99 kw = match.group().upper() | |
| 100 yield (match.start(), | |
| 101 toktype, | |
| 102 lexer.END_TRANSLATIONS.get( | |
| 103 kw, | |
| 104 lexer.DEFAULT_END_PREFIX + kw)) | |
| 105 | |
| 106 return _op_end_translate | |
| 107 | |
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108 def op_opt_ignore(toktype): |
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109 |
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110 def _op_opt_ignore(lexer, match, ctx=None): |
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111 if not lexer.no_end: |
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112 yield match.start(), toktype, match.group() |
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113 |
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114 return _op_opt_ignore |
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115 |
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116 def op_opt_ignore_or_space(lexer, match, ctx=None): |
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117 """Yield a single whitespace ' ' or nothing -- depending on the lexer's |
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118 `no_end` setting. |
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119 |
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120 """ |
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121 if not lexer.no_end: |
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122 yield match.start(), Whitespace, " " |
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123 |
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124 def op_symbol(toktype): |
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125 |
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126 def _op_symbol(lexer, match, ctx=None): |
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127 kw = match.group().upper() |
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128 yield match.start(), toktype, lexer.SYMBOLS.get(kw, kw) |
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129 |
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130 return _op_symbol |
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131 |
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132 tokens = { |
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133 "root": [ |
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134 (r"\n", Whitespace), |
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135 (r"/\*", Comment.Multiline, "multiline-nested-comment"), |
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136 (r"//.*$", Comment.Single), |
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137 (r"(?i)\\(remark|rem)\b(.*)$", |
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138 bygroups(op_symbol(Comment.Single), Comment.Single)), |
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139 (r"(?i)\\(block)\b(.*)$", |
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140 bygroups(op_symbol(Text), Text)), |
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141 (r"\\\n", Text), |
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142 (r"(?i)\\(" |
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143 r"(?:prog(?:ram)?)" |
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144 r"|(?:algo(?:rithm)?)" |
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145 r"|(?:proc(?:edure)?)" |
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146 r"|(?:func(?:tion)?|(?:fn))" |
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147 r"|(?:class)" |
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148 r")\s*(\{)", |
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149 bygroups(op_translate(Keyword), LexBase.op_space), |
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150 "entity-name"), |
| 57 | 151 # ENDxxx keywords with optional entity name |
| 152 # with name | |
| 153 (r"(?i)\\end(?:_|-)?(" | |
| 154 r"(?:prog(?:ram)?)" | |
| 155 r"|(?:algo(?:rithm)?)" | |
| 156 r"|(?:proc(?:edure)?)" | |
| 157 r"|(?:func(?:tion)?)" | |
| 158 r"|(?:class)" | |
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159 r")\s*(\{)", |
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160 bygroups(op_opt_end_translate(Keyword), |
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161 op_opt_ignore_or_space), |
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162 "entity-name-end"), |
| 57 | 163 # without name |
| 164 (r"(?i)\\end(?:_|-)?(" | |
| 165 r"(?:prog(?:ram)?)" | |
| 166 r"|(?:algo(?:rithm)?)" | |
| 167 r"|(?:proc(?:edure)?)" | |
| 168 r"|(?:func(?:tion)?)" | |
| 169 r"|(?:class)" | |
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170 r")\b", |
| 57 | 171 bygroups(op_opt_end_translate(Keyword))), |
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172 # Keywords |
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173 (r"(?i)\\(" |
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174 r"(?:is)" |
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175 r")\b", |
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176 bygroups(op_translate(Keyword))), |
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177 include("expr"), |
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178 (r"\s+", Text), |
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179 ], |
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180 "entity-name": [ # may be multiline |
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181 (r"[^\\}]+", Name.Entity), |
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182 (r"\\\}", Name.Entity), |
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183 (r"\\", Name.Entity), |
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184 (r"\}", LexBase.op_ignore, "#pop"), |
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185 ], |
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186 "entity-name-end": [ # may be multiline -- suppressed if no_end |
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187 (r"[^\\}]+", op_opt_ignore(Name.Entity)), |
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188 (r"\\\}", op_opt_ignore(Name.Entity)), |
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189 (r"\\", op_opt_ignore(Name.Entity)), |
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190 (r"\}", LexBase.op_ignore, "#pop"), |
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191 ], |
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192 "expr": [ |
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193 include("py-strings"), |
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194 include("py-numbers"), |
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195 include("py-name"), |
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196 ] |
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197 } |
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198 |
| 57 | 199 def __init__(self, **options): |
| 200 val = pygments.util.get_bool_opt(options, "no_end", default=False) | |
| 201 self.no_end = val | |
| 202 LexBase.__init__(self, **options) | |
| 203 | |
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204 |
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205 class AlgPseudocodeLexer_DE(AlgPseudocodeLexer): |
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206 |
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207 name = "AlgPseudocodeDE" |
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208 aliases = ["algpseudocode-de", "algpseudo-de"] |
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209 filenames = ["*.algpseudo-de", "*.algpseudocode-de"] |
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210 |
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211 LANG = "de" |
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212 TRANSLATIONS = AlgPseudocodeLexer.TRANSLATIONS.copy() |
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213 TRANSLATIONS.update({ |
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214 "PROG": "PROGRAMM", |
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215 "PROGRAM": "PROGRAMM", |
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216 "ALGO": "ALGORITHMUS", |
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217 "ALGORITHM": "ALGORITHMUS", |
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218 "PROC": "PROZEDUR", |
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219 "PROCEDURE": "PROZEDUR", |
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220 "FUNC": "FUNKTION", |
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221 "FUNCTION": "FUNKTION", |
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222 "FN": "FUNKTION", |
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223 "CLASS": "KLASSE", |
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224 "IS": "IST", |
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225 }) |
| 57 | 226 END_TRANSLATIONS = AlgPseudocodeLexer.END_TRANSLATIONS.copy() |
| 227 END_TRANSLATIONS.update({ | |
| 228 "PROG": "ENDE DES PROGRAMMS", | |
| 229 "PROGRAM": "ENDE VON PROGRAMMS", | |
| 230 "ALGO": "ENDE DES ALGORITHMUS", | |
| 231 "ALGORITHM": "ENDE DES ALGORITHMUS", | |
| 232 "PROC": "ENDE DER PROZEDUR", | |
| 233 "PROCEDURE": "ENDE DER PROZEDUR", | |
| 234 "FUNC": "ENDE DER FUNKTION", | |
| 235 "FUNCTION": "ENDE DER FUNKTION", | |
| 236 "FN": "ENDE DER FUNKTION", | |
| 237 "CLASS": "ENDE DER KLASSE", | |
| 238 }) | |
| 239 DEFAULT_END_PREFIX = "ENDE VON " | |
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240 |
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241 |
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242 class AlgPseudocodeLexer_FR(AlgPseudocodeLexer): |
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243 |
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244 name = "AlgPseudocodeFR" |
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245 aliases = ["algpseudocode-fr", "algpseudo-fr"] |
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246 filenames = ["*.algpseudo-fr", "*.algpseudocode-fr"] |
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247 |
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248 LANG = "de" |
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249 TRANSLATIONS = AlgPseudocodeLexer.TRANSLATIONS.copy() |
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250 TRANSLATIONS.update({ |
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251 "PROG": "PROGRAMME", |
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252 "PROGRAM": "PROGRAMME", |
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253 "ALGO": "ALGORITHME", |
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254 "ALGORITHM": "ALGORITHME", |
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255 "PROC": "PROCÉDURE", |
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256 "PROCEDURE": "PROCÉDURE", |
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257 "FUNC": "FONCTION", |
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258 "FUNCTION": "FOUNCTION", |
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259 "FN": "FONCTION", |
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260 "CLASS": "CLASSE", |
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261 "IS": "EST", |
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262 }) |
| 57 | 263 END_TRANSLATIONS = AlgPseudocodeLexer.END_TRANSLATIONS.copy() |
| 264 END_TRANSLATIONS.update({ | |
| 265 "PROG": "FIN DE PROGRAMME", | |
| 266 "PROGRAM": "FIN DE PROGRAMME", | |
| 267 "ALGO": "FIN D'ALGORITHME", | |
| 268 "ALGORITHM": "FIN D'ALGORITHME", | |
| 269 "PROC": "FIN DE PROCÉDURE", | |
| 270 "PROCEDURE": "FIN DE PROCÉDURE", | |
| 271 "FUNC": "FIN DE FONCTION", | |
| 272 "FUNCTION": "FIN DE FOUNCTION", | |
| 273 "FN": "FIN DE FONCTION", | |
| 274 "CLASS": "FIN DE CLASSE", | |
| 275 }) | |
| 276 DEFAULT_END_PREFIX = "FIN DE " |