promql.sublime-syntax

%YAML 1.2
---
name: promql
file_extensions:
  - promql
scope: source.promql
variables:
  metric: '[a-zA-Z_-]+'
  labelKey: '[a-zA-Z0-9_-]+'
contexts:
  prototype:
    - include: comments

  main:
    - include: functions
    - include: operators
    - include: numbers
    - include: selectors

  functions:
    - match: '\b(sum|min|max|avg|stddev|stdvar|count|count_values|quantile|topk|bottomk|sum_over_time|min_over_time|max_over_time|avg_over_time|stddev_over_time|stdvar_over_time|count_over_time|abs|absent|absent_over_time|ceil|changes|clamp_max|clamp_min|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|log2|log10|minute|month|predict_linear|rate|resets|round|scalar|sort|sort_desc|sqrt|time|timestamp|vector|year)\b'
      scope: entity.name.function.promql

  operators:
    - match: '(?:[/%\^*+-])|(?:\b(and|or|unless|bool)\b)'
      scope: keyword.operator.promql

    - match: '\b(on|ignoring|group_left|group_right|by|without)\b'
      scope: keyword.operator.promql

  numbers:
    - match: '\b(-)?[0-9.]+\b'
      scope: constant.numeric.promql

  selectors:
    - match: '({{metric}})\{'
      captures:
        1: entity.name.constant.promql
      push:
        - label_matcher
        - offset_modifier

  label_matcher:
    - match: '({{labelKey}})(=|!=|=~|!~)'
      captures:
        1: entity.name.label.promql
        2: keyword.operator.promql
      push: strings

  offset_modifier:
    - match: '\}(\[\d+(s|m|h|d|w|y)\])?'
      captures:
        1: entity.name.tag.promql
      pop: true

  strings:
    - match: "(\"|')"
      scope: punctuation.definition.string.begin.promql
      push: inside_string

  inside_string:
    - meta_include_prototype: false
    - meta_scope: string.quoted.double.promql
    - match: '\.'
      scope: constant.character.escape.promql
    - match: "(\"|')"
      scope: punctuation.definition.string.end.promql
      pop: true

  comments:
    - match: '#'
      scope: punctuation.definition.comment.promql
      push:
        # This is an anonymous context push for brevity.
        - meta_scope: comment.line.number-sign.promql
        - match: $\n?
          pop: true