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""" pygments.lexers.fantom ~~~~~~~~~~~~~~~~~~~~~~ Lexer for the Fantom language. :copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS. :license: BSD, see LICENSE for details. """ from string import Template from pygments.lexer import RegexLexer, include, bygroups, using, \ this, default, words from pygments.token import Text, Comment, Operator, Keyword, Name, String, \ Number, Punctuation, Literal, Whitespace __all__ = ['FantomLexer'] class FantomLexer(RegexLexer): """ For Fantom source code. .. versionadded:: 1.5 """ name = 'Fantom' aliases = ['fan'] filenames = ['*.fan'] mimetypes = ['application/x-fantom'] # often used regexes def s(str): return Template(str).substitute( dict( pod=r'[\"\w\.]+', eos=r'\n|;', id=r'[a-zA-Z_]\w*', # all chars which can be part of type definition. Starts with # either letter, or [ (maps), or | (funcs) type=r'(?:\[|[a-zA-Z_]|\|)[:\w\[\]|\->?]*?', ) ) tokens = { 'comments': [ (r'(?s)/\*.*?\*/', Comment.Multiline), # Multiline (r'//.*?$', Comment.Single), # Single line # TODO: highlight references in fandocs (r'\*\*.*?$', Comment.Special), # Fandoc (r'#.*$', Comment.Single) # Shell-style ], 'literals': [ (r'\b-?[\d_]+(ns|ms|sec|min|hr|day)', Number), # Duration (r'\b-?[\d_]*\.[\d_]+(ns|ms|sec|min|hr|day)', Number), # Duration with dot (r'\b-?(\d+)?\.\d+(f|F|d|D)?', Number.Float), # Float/Decimal (r'\b-?0x[0-9a-fA-F_]+', Number.Hex), # Hex (r'\b-?[\d_]+', Number.Integer), # Int (r"'\\.'|'[^\\]'|'\\u[0-9a-f]{4}'", String.Char), # Char (r'"', Punctuation, 'insideStr'), # Opening quote (r'`', Punctuation, 'insideUri'), # Opening accent (r'\b(true|false|null)\b', Keyword.Constant), # Bool & null (r'(?:(\w+)(::))?(\w+)(<\|)(.*?)(\|>)', # DSL bygroups(Name.Namespace, Punctuation, Name.Class, Punctuation, String, Punctuation)), (r'(?:(\w+)(::))?(\w+)?(#)(\w+)?', # Type/slot literal bygroups(Name.Namespace, Punctuation, Name.Class, Punctuation, Name.Function)), (r'\[,\]', Literal), # Empty list (s(r'($type)(\[,\])'), # Typed empty list bygroups(using(this, state='inType'), Literal)), (r'\[:\]', Literal), # Empty Map (s(r'($type)(\[:\])'), bygroups(using(this, state='inType'), Literal)), ], 'insideStr': [ (r'\\\\', String.Escape), # Escaped backslash (r'\\"', String.Escape), # Escaped " (r'\\`', String.Escape), # Escaped ` (r'\$\w+', String.Interpol), # Subst var (r'\$\{.*?\}', String.Interpol), # Subst expr (r'"', Punctuation, '#pop'), # Closing quot (r'.', String) # String content ], 'insideUri': [ # TODO: remove copy/paste str/uri (r'\\\\', String.Escape), # Escaped backslash (r'\\"', String.Escape), # Escaped " (r'\\`', String.Escape), # Escaped ` (r'\$\w+', String.Interpol), # Subst var (r'\$\{.*?\}', String.Interpol), # Subst expr (r'`', Punctuation, '#pop'), # Closing tick (r'.', String.Backtick) # URI content ], 'protectionKeywords': [ (r'\b(public|protected|private|internal)\b', Keyword), ], 'typeKeywords': [ (r'\b(abstract|final|const|native|facet|enum)\b', Keyword), ], 'methodKeywords': [ (r'\b(abstract|native|once|override|static|virtual|final)\b', Keyword), ], 'fieldKeywords': [ (r'\b(abstract|const|final|native|override|static|virtual|' r'readonly)\b', Keyword) ], 'otherKeywords': [ (words(( 'try', 'catch', 'throw', 'finally', 'for', 'if', 'else', 'while', 'as', 'is', 'isnot', 'switch', 'case', 'default', 'continue', 'break', 'do', 'return', 'get', 'set'), prefix=r'\b', suffix=r'\b'), Keyword), (r'\b(it|this|super)\b', Name.Builtin.Pseudo), ], 'operators': [ (r'\+\+|\-\-|\+|\-|\*|/|\|\||&&|<=>|<=|<|>=|>|=|!|\[|\]', Operator) ], 'inType': [ (r'[\[\]|\->:?]', Punctuation), (s(r'$id'), Name.Class), default('#pop'), ], 'root': [ include('comments'), include('protectionKeywords'), include('typeKeywords'), include('methodKeywords'), include('fieldKeywords'), include('literals'), include('otherKeywords'), include('operators'), (r'using\b', Keyword.Namespace, 'using'), # Using stmt (r'@\w+', Name.Decorator, 'facet'), # Symbol (r'(class|mixin)(\s+)(\w+)', bygroups(Keyword, Whitespace, Name.Class), 'inheritance'), # Inheritance list # Type var := val (s(r'($type)([ \t]+)($id)(\s*)(:=)'), bygroups(using(this, state='inType'), Whitespace, Name.Variable, Whitespace, Operator)), # var := val (s(r'($id)(\s*)(:=)'), bygroups(Name.Variable, Whitespace, Operator)), # .someId( or ->someId( ### (s(r'(\.|(?:\->))($id)(\s*)(\()'), bygroups(Operator, Name.Function, Whitespace, Punctuation), 'insideParen'), # .someId or ->someId (s(r'(\.|(?:\->))($id)'), bygroups(Operator, Name.Function)), # new makeXXX ( (r'(new)(\s+)(make\w*)(\s*)(\()', bygroups(Keyword, Whitespace, Name.Function, Whitespace, Punctuation), 'insideMethodDeclArgs'), # Type name ( (s(r'($type)([ \t]+)' # Return type and whitespace r'($id)(\s*)(\()'), # method name + open brace bygroups(using(this, state='inType'), Whitespace, Name.Function, Whitespace, Punctuation), 'insideMethodDeclArgs'), # ArgType argName, (s(r'($type)(\s+)($id)(\s*)(,)'), bygroups(using(this, state='inType'), Whitespace, Name.Variable, Whitespace, Punctuation)), # ArgType argName) # Covered in 'insideParen' state # ArgType argName -> ArgType| (s(r'($type)(\s+)($id)(\s*)(\->)(\s*)($type)(\|)'), bygroups(using(this, state='inType'), Whitespace, Name.Variable, Whitespace, Punctuation, Whitespace, using(this, state='inType'), Punctuation)), # ArgType argName| (s(r'($type)(\s+)($id)(\s*)(\|)'), bygroups(using(this, state='inType'), Whitespace, Name.Variable, Whitespace, Punctuation)), # Type var (s(r'($type)([ \t]+)($id)'), bygroups(using(this, state='inType'), Whitespace, Name.Variable)), (r'\(', Punctuation, 'insideParen'), (r'\{', Punctuation, 'insideBrace'), (r'\s+', Whitespace), (r'.', Text) ], 'insideParen': [ (r'\)', Punctuation, '#pop'), include('root'), ], 'insideMethodDeclArgs': [ (r'\)', Punctuation, '#pop'), (s(r'($type)(\s+)($id)(\s*)(\))'), bygroups(using(this, state='inType'), Whitespace, Name.Variable, Whitespace, Punctuation), '#pop'), include('root'), ], 'insideBrace': [ (r'\}', Punctuation, '#pop'), include('root'), ], 'inheritance': [ (r'\s+', Whitespace), # Whitespace (r':|,', Punctuation), (r'(?:(\w+)(::))?(\w+)', bygroups(Name.Namespace, Punctuation, Name.Class)), (r'\{', Punctuation, '#pop') ], 'using': [ (r'[ \t]+', Whitespace), # consume whitespaces (r'(\[)(\w+)(\])', bygroups(Punctuation, Comment.Special, Punctuation)), # ffi (r'(\")?([\w.]+)(\")?', bygroups(Punctuation, Name.Namespace, Punctuation)), # podname (r'::', Punctuation, 'usingClass'), default('#pop') ], 'usingClass': [ (r'[ \t]+', Whitespace), # consume whitespaces (r'(as)(\s+)(\w+)', bygroups(Keyword.Declaration, Whitespace, Name.Class), '#pop:2'), (r'[\w$]+', Name.Class), default('#pop:2') # jump out to root state ], 'facet': [ (r'\s+', Whitespace), (r'\{', Punctuation, 'facetFields'), default('#pop') ], 'facetFields': [ include('comments'), include('literals'), include('operators'), (r'\s+', Whitespace), (r'(\s*)(\w+)(\s*)(=)', bygroups(Whitespace, Name, Whitespace, Operator)), (r'\}', Punctuation, '#pop'), (r'\s+', Whitespace), (r'.', Text) ], }