overpass-frontend/src/EvaluatorValue.js

A JavaScript (NodeJS/Browser) library to easily access data from OpenStreetMap via Overpass API or from an OSM File. The objects can directly be used with LeafletJS or exported to GeoJSON. Data will be cached in the browser memory.

const EvaluatorPart = require('./EvaluatorPart')

module.exports = class EvaluatorValue extends EvaluatorPart {
  constructor (value) {
    super()
    this.value = value
  }

  eval (context) {
    return this.value
  }

  toJSON () {
    if (typeof this.value === 'boolean') {
      return this.value ? 1 : 0
    }

    return this.value
  }

  toString () {
    if (typeof this.value === 'number') {
      return '' + this.value
    }

    if (typeof this.value === 'string') {
      return '"' + this.value
        .replace(/\\/g, '\\\\')
        .replace(/"/g, '\\"') + '"'
    }

    if (typeof this.value === 'boolean') {
      return this.value ? '1' : '0'
    }
  }

  toValue () {
    return this.value
  }

  compileLokiJS () {
    return { value: this.value }
  }
}