Function parseConditional

src/expression/parse.js:754–781

* conditional operation * * condition ? truePart : falsePart * * Note: conditional operator is right-associative * * @return {Node} node * @private

(state)

   * @private
   */
  function parseConditional (state) {
    let node = parseLogicalOr(state)

    while (state.token === '?') { // eslint-disable-line no-unmodified-loop-condition
      // set a conditional level, the range operator will be ignored as long
      // as conditionalLevel === state.nestingLevel.
      const prev = state.conditionalLevel
      state.conditionalLevel = state.nestingLevel
      getTokenSkipNewline(state)

      const condition = node
      const trueExpr = parseAssignment(state)

      if (state.token !== ':') throw createSyntaxError(state, 'False part of conditional expression expected')

      state.conditionalLevel = null
      getTokenSkipNewline(state)

      const falseExpr = parseAssignment(state) // Note: check for conditional operator again, right associativity

      node = new ConditionalNode(condition, trueExpr, falseExpr)

      // restore the previous conditional level
      state.conditionalLevel = prev
    }

    return node
  }

  /**
   * logical or, 'x or y'