mirror of https://github.com/YosysHQ/yosys.git
74 lines
2.7 KiB
Python
74 lines
2.7 KiB
Python
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from pygments.lexer import RegexLexer, bygroups, include
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from pygments.token import (Comment, Error, Keyword, Name, Number, Operator,
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String, Whitespace)
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__all__ = ['YoscryptLexer']
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class YoscryptLexer(RegexLexer):
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name = 'Yosys Script'
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aliases = ['yoscrypt']
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filenames = ['*.ys']
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tokens = {
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'common': [
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(r'\s+', Whitespace),
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(r'#.*', Comment.Single),
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(r'"', String, 'string'),
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(r'(\d+)(\')([bdho]? ?\w+)', bygroups(Number, Operator, Number)),
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(r'(\d+\.\d+)', Number.Float),
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(r'(\d+)', Number),
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(r'(\$[A-Za-z_0-9]*)', Name.Builtin),
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(r'([A-Za-z_][A-Za-z_0-9\.\\/:-]*)', Name),
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(r'(\[)(-\S*)(\])', # optional command
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bygroups(Operator, Name.Attribute, Operator)),
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(r'([\[<]\w*[\]>])', Name), # arguments
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(r'[\{\}\|=\[\],]', Operator),
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(r'.', Comment),
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],
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'root': [
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(r'([A-Za-z_][A-Za-z_0-9]*)', Keyword, 'command'),
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(r'(-[A-Za-z_][A-Za-z_0-9]*)', Name.Attribute, 'command'), # shortcut for options
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include('common'),
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],
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'command': [
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(r'(-[A-Za-z_][A-Za-z_0-9]*)', Name.Attribute),
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(r'\+/[^\s]+', Name.Class),
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(r'$', Whitespace, '#pop'),
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(r';(?=\s)', Operator, '#pop'),
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(r';{2,3}(?=\s)', Name.Class, '#pop'),
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(r';{1,3}', Error, '#pop'),
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(r'([ANwismctparn]:)', Keyword.Type, 'pattern'),
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(r'@', Keyword.Type),
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(r'%(x|ci|co)e?', Keyword.Type, 'expansion'),
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(r'%[%nuidDcasmMCR]?', Keyword.Type),
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(r'/', Operator),
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include('common'),
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],
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'pattern': [
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(r'<<', Name), # Not an operator
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(r'(=|<|<=|>|>=)', Operator),
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(r':', Keyword.Type),
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(r'$', Whitespace, '#pop:2'),
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(r'\s+', Whitespace, '#pop'),
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include('common'),
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],
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'expansion': [
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(r'$', Name.Class, '#pop:2'),
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(r';(?=\s)', Operator, '#pop:2'),
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(r';{2,3}(?=\s)', Name.Class, '#pop:2'),
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(r'\s', Whitespace, '#pop'),
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(r'[0-9\*]{1,3}', Number),
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(r'[:+-,\[\]]', Operator),
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include('common'),
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],
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'string': [
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(r'"', String, '#pop'),
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(r'\\([\\abfnrtv"\']|x[a-fA-F0-9]{2,4}|[0-7]{1,3})', String.Escape),
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(r'[^\\"\n]+', String), # all other characters
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(r'(\\)(\n)', bygroups(String.Escape, Whitespace)), # line continuation
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(r'\\', String), # stray backslash
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]
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}
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