voltraco/dml

A data modeling language (for node and the browser)

dml's Issues

Implement `required` and `optional` directives

upon parsing @required, all subsequent rules will be marked as required, each rule may then specify an optional true validator.

upon parsing @optional all subsequent rules will be marked as optional (default), each rule may then specify a required true validator

String regExp support ?

• Validation support exists with regExp ?

Ex:

String uuid {
	required true
	regExp  /[0-9]{1,3}.[0-9]{1,3}/
}

Formatting Support ?

A feature that I deem useful and can be added in future versions if following the purpose of this library is the possibility of passing a formatting function to the field, for example:

sample.model

/*
 * An example data model
 */

Date created
Number id

String name {
  required true // this is a comment
  gt 2 "Must be greater than 2 characters"
  lte 256 "Must be less than or equal to 256 characters"
  formatter  (str)=> str.toUpperCase()
}

String bio "A bio must be a string" {
  lte 140 "A bio must fit into a tweet"
}

Boolean accountType
}

index.js

const Models = require('node-dml')

let model = Models.compile(fs.readFileSync('sample.model', 'utf8'))

let result = model({
  id: 1337,
  created: new Date(),
  name: 'Glen Danzig',
  accountType: 'awesome'
})

Output

{
  data: {
    id: 1337,
    created: '2016-10-02T13:56:44.931Z',
    name: 'GLEN DANZIG', // Formatted in uppercase
    accountType: 'awesome'
  },
  length: 1,
  rules: {
    accountType: [{
      validator: 'type',
      message: 'Expected type [Boolean] but got type [String]'
    }]
  }
}

Conversion to Es6

I wonder if there is any problem before we start implementing the functionality described in #5 to convert your entire base to es6 and a more modular formatting for the functions?

SyntaxError: Block-scoped declarations

I've the following error:

SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode

I was can send a pull request but to solve this just add 'use strict' on first line of lexer.js

Create formal grammar spec