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"""
pygments.lexers.promql
~~~~~~~~~~~~~~~~~~~~~~
Lexer for Prometheus Query Language.
:copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, bygroups, default, words
from pygments.token import Comment, Keyword, Name, Number, Operator, \
Punctuation, String, Whitespace
__all__ = ["PromQLLexer"]
class PromQLLexer(RegexLexer):
"""
For PromQL queries.
For details about the grammar see:
https://github.com/prometheus/prometheus/tree/master/promql/parser
.. versionadded: 2.7
"""
name = "PromQL"
url = 'https://prometheus.io/docs/prometheus/latest/querying/basics/'
aliases = ["promql"]
filenames = ["*.promql"]
base_keywords = (
words(
(
"bool",
"by",
"group_left",
"group_right",
"ignoring",
"offset",
"on",
"without",
),
suffix=r"\b",
),
Keyword,
)
aggregator_keywords = (
words(
(
"sum",
"min",
"max",
"avg",
"group",
"stddev",
"stdvar",
"count",
"count_values",
"bottomk",
"topk",
"quantile",
),
suffix=r"\b",
),
Keyword,
)
function_keywords = (
words(
(
"abs",
"absent",
"absent_over_time",
"avg_over_time",
"ceil",
"changes",
"clamp_max",
"clamp_min",
"count_over_time",
"day_of_month",
"day_of_week",
"days_in_month",
"delta",
"deriv",
"exp",
"floor",
"histogram_quantile",
"holt_winters",
"hour",
"idelta",
"increase",
"irate",
"label_join",
"label_replace",
"ln",
"log10",
"log2",
"max_over_time",
"min_over_time",
"minute",
"month",
"predict_linear",
"quantile_over_time",
"rate",
"resets",
"round",
"scalar",
"sort",
"sort_desc",
"sqrt",
"stddev_over_time",
"stdvar_over_time",
"sum_over_time",
"time",
"timestamp",
"vector",
"year",
),
suffix=r"\b",
),
Keyword.Reserved,
)
tokens = {
"root": [
(r"\n", Whitespace),
(r"\s+", Whitespace),
(r",", Punctuation),
# Keywords
base_keywords,
aggregator_keywords,
function_keywords,
# Offsets
(r"[1-9][0-9]*[smhdwy]", String),
# Numbers
(r"-?[0-9]+\.[0-9]+", Number.Float),
(r"-?[0-9]+", Number.Integer),
# Comments
(r"#.*?$", Comment.Single),
# Operators
(r"(\+|\-|\*|\/|\%|\^)", Operator),
(r"==|!=|>=|<=|<|>", Operator),
(r"and|or|unless", Operator.Word),
# Metrics
(r"[_a-zA-Z][a-zA-Z0-9_]+", Name.Variable),
# Params
(r'(["\'])(.*?)(["\'])', bygroups(Punctuation, String, Punctuation)),
# Other states
(r"\(", Operator, "function"),
(r"\)", Operator),
(r"\{", Punctuation, "labels"),
(r"\[", Punctuation, "range"),
],
"labels": [
(r"\}", Punctuation, "#pop"),
(r"\n", Whitespace),
(r"\s+", Whitespace),
(r",", Punctuation),
(r'([_a-zA-Z][a-zA-Z0-9_]*?)(\s*?)(=~|!=|=|!~)(\s*?)("|\')(.*?)("|\')',
bygroups(Name.Label, Whitespace, Operator, Whitespace,
Punctuation, String, Punctuation)),
],
"range": [
(r"\]", Punctuation, "#pop"),
(r"[1-9][0-9]*[smhdwy]", String),
],
"function": [
(r"\)", Operator, "#pop"),
(r"\(", Operator, "#push"),
default("#pop"),
],
}
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