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			94 lines
		
	
	
		
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			Python
		
	
			
		
		
	
	
			94 lines
		
	
	
		
			3.4 KiB
		
	
	
	
		
			Python
		
	
"""
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    pygments.lexers.kusto
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    ~~~~~~~~~~~~~~~~~~~~~
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    Lexers for Kusto Query Language (KQL).
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    :copyright: Copyright 2006-2025 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, words
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from pygments.token import (Comment, Keyword, Name, Number, Punctuation,
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                            String, Whitespace)
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__all__ = ["KustoLexer"]
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# Although these all seem to be keywords
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# https://github.com/microsoft/Kusto-Query-Language/blob/master/src/Kusto.Language/Syntax/SyntaxFacts.cs
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# it appears that only the ones with tags here
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# https://github.com/microsoft/Kusto-Query-Language/blob/master/src/Kusto.Language/Parser/QueryGrammar.cs
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# are highlighted in the Azure portal log query editor.
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KUSTO_KEYWORDS = [
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    'and', 'as', 'between', 'by', 'consume', 'contains', 'containscs', 'count',
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    'distinct', 'evaluate', 'extend', 'facet', 'filter', 'find', 'fork',
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    'getschema', 'has', 'invoke', 'join', 'limit', 'lookup', 'make-series',
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    'matches regex', 'mv-apply', 'mv-expand', 'notcontains', 'notcontainscs',
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    '!contains', '!has', '!startswith', 'on', 'or', 'order', 'parse', 'parse-where',
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    'parse-kv', 'partition', 'print', 'project', 'project-away', 'project-keep',
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    'project-rename', 'project-reorder', 'range', 'reduce', 'regex', 'render',
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    'sample', 'sample-distinct', 'scan', 'search', 'serialize', 'sort', 'startswith',
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    'summarize', 'take', 'top', 'top-hitters', 'top-nested', 'typeof', 'union',
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    'where', 'bool', 'date', 'datetime', 'int', 'long', 'real', 'string', 'time'
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]
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# From
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# https://github.com/microsoft/Kusto-Query-Language/blob/master/src/Kusto.Language/Syntax/SyntaxFacts.cs
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KUSTO_PUNCTUATION = [
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    "(", ")", "[", "]", "{", "}", "|", "<|", "+", "-", "*", "/",
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    "%", ".." "!", "<", "<=", ">", ">=", "=", "==", "!=", "<>",
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    ":", ";", ",", "=~", "!~", "?", "=>",
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]
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class KustoLexer(RegexLexer):
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    """For Kusto Query Language source code.
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    """
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    name = "Kusto"
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    aliases = ["kql", "kusto"]
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    filenames = ["*.kql", "*.kusto", ".csl"]
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    url = "https://learn.microsoft.com/en-us/azure/data-explorer/kusto/query"
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    version_added = '2.17'
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    tokens = {
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        "root": [
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            (r"\s+", Whitespace),
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            (words(KUSTO_KEYWORDS, suffix=r"\b"), Keyword),
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            (r"//.*", Comment),
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            (words(KUSTO_PUNCTUATION), Punctuation),
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            (r"[^\W\d]\w*", Name),
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            # Numbers can take the form 1, .1, 1., 1.1, 1.1111, etc.
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            (r"\d+[.]\d*|[.]\d+", Number.Float),
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            (r"\d+", Number.Integer),
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            (r"'", String, "single_string"),
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            (r'"', String, "double_string"),
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            (r"@'", String, "single_verbatim"),
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            (r'@"', String, "double_verbatim"),
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            (r"```", String, "multi_string"),
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        ],
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        "single_string": [
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            (r"'", String, "#pop"),
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            (r"\\.", String.Escape),
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            (r"[^'\\]+", String),
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        ],
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        "double_string": [
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            (r'"', String, "#pop"),
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            (r"\\.", String.Escape),
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            (r'[^"\\]+', String),
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        ],
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        "single_verbatim": [
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            (r"'", String, "#pop"),
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            (r"[^']+", String),
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        ],
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        "double_verbatim": [
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            (r'"', String, "#pop"),
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            (r'[^"]+', String),
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        ],
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        "multi_string": [
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            (r"[^`]+", String),
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            (r"```", String, "#pop"),
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            (r"`", String),
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        ],
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    }
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