// This is a TextMate grammar distributed by `starry-night`.
// This grammar is developed at
// <https://github.com/gleam-lang/vscode-gleam>
// and licensed `apache-2.0`.
// See <https://github.com/wooorm/starry-night> for more info.
/**
 * @import {Grammar} from '@wooorm/starry-night'
 */

/** @type {Grammar} */
const grammar = {
  extensions: ['.gleam'],
  names: ['gleam'],
  patterns: [
    {include: '#comments'},
    {include: '#keywords'},
    {include: '#strings'},
    {include: '#constant'},
    {include: '#entity'},
    {include: '#discards'}
  ],
  repository: {
    binary_number: {
      match: '\\b0[bB][01_]*\\b',
      name: 'constant.numeric.binary.gleam'
    },
    comments: {patterns: [{match: '//.*', name: 'comment.line.gleam'}]},
    constant: {
      patterns: [
        {include: '#binary_number'},
        {include: '#octal_number'},
        {include: '#hexadecimal_number'},
        {include: '#decimal_number'},
        {match: '[[:upper:]][[:alnum:]]*', name: 'entity.name.type.gleam'}
      ]
    },
    decimal_number: {
      match: '\\b([0-9][0-9_]*)(\\.([0-9_]*)?(e-?[0-9]+)?)?\\b',
      name: 'constant.numeric.decimal.gleam'
    },
    discards: {match: '\\b_(?:[[:word:]]+)?\\b', name: 'comment.unused.gleam'},
    entity: {
      patterns: [
        {
          begin: '\\b([[:lower:]][[:word:]]*)\\b[[:space:]]*\\(',
          captures: {1: {name: 'entity.name.function.gleam'}},
          end: '\\)',
          patterns: [{include: '$self'}]
        },
        {
          match: '\\b([[:lower:]][[:word:]]*):\\s',
          name: 'variable.parameter.gleam'
        },
        {
          match: '\\b([[:lower:]][[:word:]]*):',
          name: 'entity.name.namespace.gleam'
        }
      ]
    },
    hexadecimal_number: {
      match: '\\b0[xX][0-9a-fA-F_]+\\b',
      name: 'constant.numeric.hexadecimal.gleam'
    },
    keywords: {
      patterns: [
        {
          match:
            '\\b(as|use|case|if|fn|import|let|assert|pub|type|opaque|const|todo|panic|else|echo)\\b',
          name: 'keyword.control.gleam'
        },
        {match: '(<\\-|\\->)', name: 'keyword.operator.arrow.gleam'},
        {match: '\\|>', name: 'keyword.operator.pipe.gleam'},
        {match: '\\.\\.', name: 'keyword.operator.splat.gleam'},
        {match: '(==|!=)', name: 'keyword.operator.comparison.gleam'},
        {
          match: '(<=\\.|>=\\.|<\\.|>\\.)',
          name: 'keyword.operator.comparison.float.gleam'
        },
        {match: '(<=|>=|<|>)', name: 'keyword.operator.comparison.int.gleam'},
        {match: '(&&|\\|\\|)', name: 'keyword.operator.logical.gleam'},
        {match: '<>', name: 'keyword.operator.string.gleam'},
        {match: '\\|', name: 'keyword.operator.other.gleam'},
        {
          match: '(\\+\\.|\\-\\.|/\\.|\\*\\.)',
          name: 'keyword.operator.arithmetic.float.gleam'
        },
        {
          match: '(\\+|\\-|/|\\*|%)',
          name: 'keyword.operator.arithmetic.int.gleam'
        },
        {match: '=', name: 'keyword.operator.assignment.gleam'}
      ]
    },
    octal_number: {
      match: '\\b0[oO][0-7_]*\\b',
      name: 'constant.numeric.octal.gleam'
    },
    strings: {
      begin: '"',
      end: '"',
      name: 'string.quoted.double.gleam',
      patterns: [{match: '\\\\.', name: 'constant.character.escape.gleam'}]
    }
  },
  scopeName: 'source.gleam'
}

export default grammar