# All files / src/parsers ternary.js

100% Statements 3/3
100% Branches 2/2
100% Functions 2/2
100% Lines 3/3

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     // @flow

    import P from 'parsimmon'
    import crap from './crap'

    import type {
      TupleNodeType,
      ParserType,
      NodeType
    } from '../types'

    export default P.lazy((): ParserType => {
      const TupleParser = require('./collections/tuple').default
      return P.seq(
        TupleParser,
        P.seq(
          P.string('if')
            .trim(crap)
            .then(TupleParser),
          P.string('else')
            .trim(crap)
            .then(TupleParser)
        ).atMost(1)
      ).map(
        ([tuple, rest]: [
          TupleNodeType,
          Array<[TupleNodeType, TupleNodeType]>
        ]): NodeType =>
          rest.length === 0
            ? tuple
            : {
              name: 'ternary',
              value: {
                left: tuple,
                middle: rest[0][0],
                right: rest[0][1]
              }
            }
      )
    })