mirror of https://github.com/YosysHQ/yosys.git
46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
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from pygments.lexer import RegexLexer, bygroups, include
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from pygments.token import Comment, Keyword, Name, Number, String, Whitespace
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__all__ = ['RtlilLexer']
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class RtlilLexer(RegexLexer):
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name = 'RTLIL'
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aliases = ['rtlil']
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filenames = ['*.il']
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keyword_re = r'(always|assign|attribute|autoidx|case|cell|connect|edge|end|global|high|init|inout|input|low|memory|module|negedge|offset|output|parameter|posedge|process|real|signed|size|switch|sync|update|upto|width|wire)'
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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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(keyword_re, Keyword),
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(r'([\\\$][^ \t\r\n]+|\.[0-9]+)', Name.Variable),
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(r"[0-9]+'[01xzm-]*", Number),
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(r'-?[0-9]+', Number.Integer),
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(r'"', String, 'string'),
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],
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'root': [
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(r'cell', Keyword, 'cell_definition'),
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(r'(module|wire|memory|process)', Keyword, 'definition'),
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include('common'),
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],
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'definition': [
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(r'([\\\$][^ \t\r\n]+|\.[0-9]+)', Name.Entity, '#pop'),
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include('common')
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],
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'cell_definition': [
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(r'(\$[^ \t\r\n]+)\b', Name.Function),
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(r'(\\[^ \t\r\n]+|\.[0-9]+)', Name.Variable),
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(r'$', Whitespace, '#pop'),
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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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