tools/inform.py

   1 """
   2 Inform 6 syntax highlighting.
   3
   4 This is an ultra-minimal version compared to the standard Pygments Inform6
   5 lexer, but is much more forgiving of syntax errors.  And it handles the
   6 exclamation-inside-string case properly.
   7 """
   8
   9 from pygments.lexer import RegexLexer
  10 from pygments.token import (Text, Comment, Operator, Keyword, Name,
  11                             String, Number, Punctuation, Token)
  12
  13 objects = ["Class", "Nearby", "Object"]
  14
  15 directives = ["Abbreviate", "Array", "Attribute", "Btrace", "Class",
  16               "Constant", "Default", "Dictionary", "End", "Endif", "Etrace",
  17               "Extend", "Fake_action", "Global", "Ifdef", "Iffalse",
  18               "Ifndef", "Ifnot", "Iftrue", "Ifv3", "Ifv5", "Import",
  19               "Include", "Link", "Listsymbols", "Listdict", "Listverbs",
  20               "Lowstring", "Ltrace", "Message", "Nearby", "Nobtrace",
  21               "Noetrace", "Noltrace", "Notrace", "Object", "Property",
  22               "Release", "Replace", "Serial", "Statusline", "Stub",
  23               "Switches", "System_file", "Trace", "Verb", "Version",
  24               "Zcharacter"]
  25
  26 defining = ["[", "array", "attribute", "class", "constant", "fake_action",
  27             "global", "lowstring", "nearby", "object", "property"]
  28
  29 attributes = ["absent", "animate", "clothing", "concealed", "container",
  30               "door", "edible", "enterable", "female", "general", "light",
  31               "lockable", "locked", "male", "moved", "neuter", "on", "open",
  32               "openable", "pluralname", "proper", "scenery", "scored",
  33               "static", "supporter", "switchable", "talkable", "transparent",
  34               "visited", "workflag", "worn"]
  35
  36 properties = ["n_to", "s_to", "e_to", "w_to", "ne_to", "se_to", "nw_to",
  37               "sw_to", "u_to", "d_to", "in_to", "out_to", "add_to_scope",
  38               "after", "article", "articles", "before", "cant_go", "capacity",
  39               "daemon", "describe", "description", "door_dir", "door_to",
  40               "each_turn", "found_in", "grammar", "initial",
  41               "inside_description", "invent", "life", "list_together",
  42               "name", "number", "orders", "parse_name", "plural",
  43               "react_after", "react_before", "short_name", "short_name_indef",
  44               "time_left", "time_out", "when_closed", "when_open", "when_on",
  45               "when_off", "with_key"]
  46
  47 extension_properties = ["pname"]
  48
  49 keywords = ["box", "break", "continue", "do", "else", "font",
  50             "for", "give", "has", "hasnt", "if", "in", "inversion", "jump",
  51             "move", "new_line", "notin", "objectloop", "ofclass", "or",
  52             "print", "print_ret", "provides", "quit", "read", "remove",
  53             "restore", "return", "rfalse", "rtrue", "save", "spaces",
  54             "string", "style bold", "style fixed", "style reverse",
  55             "style roman", "style underline", "switch", "to", "until",
  56             "while", "with"]
  57
  58 constants = ["false", "true"]
  59
  60 def wordlist(list):
  61     return "(" + "|".join(list) + r")\b"
  62
  63 class InformLexer(RegexLexer):
  64     """
  65     Inform code lexer.
  66     """
  67
  68     name = 'Inform 6'
  69     aliases = ['inform', 'inform6', 'i6']
  70     filenames = ['*.inf']
  71     mimetypes = ['text/x-inform', 'application/x-inform']
  72
  73     tokens = {
  74         'root': [
  75             (r'"', String.Double, 'string-double'),
  76             (r"'", String.Single, 'string-single'),
  77             (r"\[ *", Text, 'function-name'),
  78
  79             (r'\n', Text),
  80             (r'[^\S\n]+', Text),
  81             (r'!.*$', Comment.Single),
  82             (r'\\\n', Text),
  83             (r'\\', Text),
  84             (r'=', Operator),
  85             (r"[A-Za-z_,]+:", Name.Label),
  86             (r"<.+?>", Name.Label),
  87
  88             (wordlist(objects), Name.Class),
  89             (wordlist(keywords), Token.Keyword.Reserved),
  90             (wordlist(properties), Name.Builtin),
  91             (wordlist(directives), Name.Entity),
  92             (wordlist(attributes), Name.Attribute),
  93             (wordlist(constants), Name.Constant),
  94
  95             (wordlist(extension_properties), Name.Builtin),
  96
  97             (r'[a-zA-Z_][a-zA-Z0-9_.]*', Name),
  98             (r'(\d+\.?\d*|\d*\.\d+)([eE][+-]?[0-9]+)?', Number.Float),
  99             (r'\d+', Number.Integer),
 100
 101             (r'.', Punctuation),
 102         ],
 103
 104         'function-name': [
 105             (r"[ ;]", Text, '#pop'),
 106             (r".", Name.Function),
 107         ],
 108
 109         'string-double': [
 110             (r'"', String.Double, '#pop'),
 111             (r'.', String.Double),
 112             (r'\n', String.Double),
 113         ],
 114
 115         'string-single': [
 116             (r"'", String.Single, '#pop'),
 117             (r'.', String.Single),
 118         ],
 119     }