parca/ui/packages/shared/parser/src/selector.js at 640f73e17b1b64aec50fdb3fbb8282887fffe329 · parca-dev/parca · GitHub

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// Generated automatically by nearley, version 2.20.1
// http://github.com/Hardmath123/nearley

// *******************************************************
// Add the following code whenever this file is regenerated
// to export the grammer in a type-safe way without using
// global variables.
// *******************************************************

import moo from 'moo';

export let grammar;

(function () {
  function id(x) {
    return x[0];
  }

  let lexer = moo.states({
    main: {
      strstart: {match: '"', push: 'lit'},
      space: {match: /\s+/, lineBreaks: true},
      ident: /(?:[a-zA-Z_:][a-zA-Z0-9_:\-.]*)/,
      matcherType: ['=', '!=', '=~', '!~'],
      '{': '{',
      '}': '}',
      ',': ',',
    },
    lit: {
      strend: {match: '"', pop: 1},
      constant: {match: /(?:[^"])+/, lineBreaks: true},
    },
  });

  function extractMatchers(d) {
    let matchers = [d[2]];

    for (let i in d[3]) {
      matchers.push(d[3][i][3]);
    }

    return matchers;
  }

  grammar = {
    Lexer: lexer,
    ParserRules: [
      {
        name: 'profileSelector',
        symbols: ['_', 'profileName', '_'],
        postprocess: function (d) {
          return {profileName: d[1], matchers: []};
        },
      },
      {
        name: 'profileSelector',
        symbols: ['_', 'ident', '_', 'matchers', '_'],
        postprocess: function (d) {
          return {profileName: d[1], matchers: d[3]};
        },
      },
      {
        name: 'profileSelector',
        symbols: ['_', 'matchers', '_'],
        postprocess: function (d) {
          return {profileName: {}, matchers: d[1]};
        },
      },
      {
        name: 'matchers',
        symbols: [{literal: '{'}, '_', {literal: '}'}],
        postprocess: function (d) {
          return [];
        },
      },
      {name: 'matchers$ebnf$1', symbols: []},
      {name: 'matchers$ebnf$1$subexpression$1', symbols: ['_', {literal: ','}, '_', 'matcher']},
      {
        name: 'matchers$ebnf$1',
        symbols: ['matchers$ebnf$1', 'matchers$ebnf$1$subexpression$1'],
        postprocess: function arrpush(d) {
          return d[0].concat([d[1]]);
        },
      },
      {
        name: 'matchers',
        symbols: [{literal: '{'}, '_', 'matcher', 'matchers$ebnf$1', '_', {literal: '}'}],
        postprocess: extractMatchers,
      },
      {
        name: 'matcher',
        symbols: ['labelName', '_', 'matcherType', '_', 'labelValue'],
        postprocess: function (d) {
          return {key: d[0], matcherType: d[2], value: d[4]};
        },
      },
      {
        name: 'string',
        symbols: ['strstart', 'constant', 'strend'],
        postprocess: function (d) {
          return d[1];
        },
      },
      {
        name: 'string',
        symbols: ['strstart', 'strend'],
        postprocess: function (d) {
          return {type: 'constant', value: ''};
        },
      },
      {name: 'profileName', symbols: ['ident'], postprocess: id},
      {name: 'labelName', symbols: ['ident'], postprocess: id},
      {name: 'labelValue', symbols: ['string'], postprocess: id},
      {
        name: 'strstart',
        symbols: [lexer.has('strstart') ? {type: 'strstart'} : strstart],
        postprocess: id,
      },
      {
        name: 'constant',
        symbols: [lexer.has('constant') ? {type: 'constant'} : constant],
        postprocess: id,
      },
      {name: 'strend', symbols: [lexer.has('strend') ? {type: 'strend'} : strend], postprocess: id},
      {name: 'matcherType', symbols: [{literal: '='}], postprocess: id},
      {name: 'matcherType', symbols: [{literal: '!='}], postprocess: id},
      {name: 'matcherType', symbols: [{literal: '=~'}], postprocess: id},
      {name: 'matcherType', symbols: [{literal: '!~'}], postprocess: id},
      {name: 'ident', symbols: [lexer.has('ident') ? {type: 'ident'} : ident], postprocess: id},
      {name: '_', symbols: []},
      {
        name: '_',
        symbols: [lexer.has('space') ? {type: 'space'} : space],
        postprocess: function (d) {
          return null;
        },
      },
    ],
    ParserStart: 'profileSelector',
  };

  if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
    module.exports = grammar;
  } else if (typeof window !== 'undefined') {
    window.grammar = grammar;
  }
})();