171 lines
4.5 KiB
Python
171 lines
4.5 KiB
Python
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"""
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pygments.lexers.savi
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~~~~~~~~~~~~~~~~~~~~
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Lexer for Savi.
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:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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from pygments.lexer import RegexLexer, bygroups, include
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from pygments.token import \
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Whitespace, Keyword, Name, String, Number, \
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Operator, Punctuation, Comment, Generic, Error
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__all__ = ['SaviLexer']
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# The canonical version of this file can be found in the following repository,
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# where it is kept in sync with any language changes, as well as the other
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# pygments-like lexers that are maintained for use with other tools:
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# - https://github.com/savi-lang/savi/blob/main/tooling/pygments/lexers/savi.py
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#
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# If you're changing this file in the pygments repository, please ensure that
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# any changes you make are also propagated to the official Savi repository,
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# in order to avoid accidental clobbering of your changes later when an update
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# from the Savi repository flows forward into the pygments repository.
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#
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# If you're changing this file in the Savi repository, please ensure that
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# any changes you make are also reflected in the other pygments-like lexers
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# (rouge, vscode, etc) so that all of the lexers can be kept cleanly in sync.
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class SaviLexer(RegexLexer):
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"""
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For Savi source code.
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.. versionadded: 2.10
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"""
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name = 'Savi'
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url = 'https://github.com/savi-lang/savi'
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aliases = ['savi']
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filenames = ['*.savi']
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tokens = {
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"root": [
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# Line Comment
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(r'//.*?$', Comment.Single),
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# Doc Comment
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(r'::.*?$', Comment.Single),
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# Capability Operator
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(r'(\')(\w+)(?=[^\'])', bygroups(Operator, Name)),
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# Double-Quote String
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(r'\w?"', String.Double, "string.double"),
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# Single-Char String
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(r"'", String.Char, "string.char"),
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# Type Name
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(r'(_?[A-Z]\w*)', Name.Class),
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# Nested Type Name
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(r'(\.)(\s*)(_?[A-Z]\w*)', bygroups(Punctuation, Whitespace, Name.Class)),
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# Declare
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(r'^([ \t]*)(:\w+)',
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bygroups(Whitespace, Name.Tag),
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"decl"),
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# Error-Raising Calls/Names
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(r'((\w+|\+|\-|\*)\!)', Generic.Deleted),
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# Numeric Values
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(r'\b\d([\d_]*(\.[\d_]+)?)\b', Number),
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# Hex Numeric Values
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(r'\b0x([0-9a-fA-F_]+)\b', Number.Hex),
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# Binary Numeric Values
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(r'\b0b([01_]+)\b', Number.Bin),
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# Function Call (with braces)
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(r'\w+(?=\()', Name.Function),
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# Function Call (with receiver)
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(r'(\.)(\s*)(\w+)', bygroups(Punctuation, Whitespace, Name.Function)),
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# Function Call (with self receiver)
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(r'(@)(\w+)', bygroups(Punctuation, Name.Function)),
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# Parenthesis
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(r'\(', Punctuation, "root"),
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(r'\)', Punctuation, "#pop"),
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# Brace
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(r'\{', Punctuation, "root"),
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(r'\}', Punctuation, "#pop"),
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# Bracket
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(r'\[', Punctuation, "root"),
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(r'(\])(\!)', bygroups(Punctuation, Generic.Deleted), "#pop"),
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(r'\]', Punctuation, "#pop"),
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# Punctuation
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(r'[,;:\.@]', Punctuation),
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# Piping Operators
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(r'(\|\>)', Operator),
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# Branching Operators
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(r'(\&\&|\|\||\?\?|\&\?|\|\?|\.\?)', Operator),
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# Comparison Operators
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(r'(\<\=\>|\=\~|\=\=|\<\=|\>\=|\<|\>)', Operator),
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# Arithmetic Operators
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(r'(\+|\-|\/|\*|\%)', Operator),
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# Assignment Operators
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(r'(\=)', Operator),
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# Other Operators
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(r'(\!|\<\<|\<|\&|\|)', Operator),
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# Identifiers
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(r'\b\w+\b', Name),
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# Whitespace
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(r'[ \t\r]+\n*|\n+', Whitespace),
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],
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# Declare (nested rules)
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"decl": [
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(r'\b[a-z_]\w*\b(?!\!)', Keyword.Declaration),
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(r':', Punctuation, "#pop"),
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(r'\n', Whitespace, "#pop"),
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include("root"),
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],
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# Double-Quote String (nested rules)
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"string.double": [
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(r'\\\(', String.Interpol, "string.interpolation"),
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(r'\\u[0-9a-fA-F]{4}', String.Escape),
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(r'\\x[0-9a-fA-F]{2}', String.Escape),
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(r'\\[bfnrt\\\']', String.Escape),
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(r'\\"', String.Escape),
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(r'"', String.Double, "#pop"),
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(r'[^\\"]+', String.Double),
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(r'.', Error),
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],
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# Single-Char String (nested rules)
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"string.char": [
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(r'\\u[0-9a-fA-F]{4}', String.Escape),
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(r'\\x[0-9a-fA-F]{2}', String.Escape),
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(r'\\[bfnrt\\\']', String.Escape),
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(r"\\'", String.Escape),
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(r"'", String.Char, "#pop"),
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(r"[^\\']+", String.Char),
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(r'.', Error),
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],
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# Interpolation inside String (nested rules)
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"string.interpolation": [
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(r"\)", String.Interpol, "#pop"),
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include("root"),
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]
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}
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