#nlp #parser #serde

no-std nlsd

Natural Language Structured Documents

4 releases

0.1.3 Jun 16, 2021
0.1.2 Sep 23, 2020
0.1.1 Sep 22, 2020
0.1.0 Sep 8, 2020

#2172 in Parser implementations

35 downloads per month
Used in 3 crates (via ogma-libs)

MIT/Apache

93KB
2.5K SLoC

Natural Language Structured Document

Natural Language Structured Documents or NLSDs for short are English representations of serializable/deserializable data. The purpose of such a document is to make equal the understanding of data and the data itself. This is important for example when users sign off on data (e.g. with a cryptographic signature) that the presentation of the data itself is what they are signing.

An NLSD attempts to represent the following data and datatypes

Null
Boolean
Number
String
List
Map
NamedList
NamedMap
Enum

Null

empty | nothing

Boolean

true | false | on | off | enabled | disabled

Number

0.0

String

`string`

Strings need to escape ``` with ```

List

the [empty] (list|`variant`) [henceforth `name`] [where an item is ___] [and another item [of `name`] is ___]

When deserializing variant if present will get converted into UpperCamelCase

Map

the [empty] (object|`variant`) [henceforth `name`] [where [the] `key` is ___] [and [the] `key` [of `name`] is ___]

Note the key will replaced with snake_case when parsing for easier mapping.

Notice the the is optional when building out key/value pairs. When serializing the the will always be placed unless the key begins with is denoting an adjective (e.g. "is_enabled")

Enum (New Type Variant)

the `type` which is ___

Names

Names are important when deserializing nested structures. The 'name' must be in scope when deserializing in order to associate the object with its parent. When searching for a 'name' the deserializer will walk up the tree to find the name. When the 'name' is found the new scope is set to that level in the tree. If no 'name' is provided the current scope

When serializing an object to NLSD, henceforth 'name' will be added unless the object is the leaf of the tree, and of 'name' will be added to keys/items unless the scope referred to is a parent of the current scope

default name for or a list item

[parent name] item [index number]

default name for a struct or map item

[parent name] [key]

where the root name is 'the list' for a list, 'the object' for an object and the struct name for a struct

Examples

User

struct User {
  id: u32,
  public_key: String,
}

let user = User { id: 1, public_key: "A7sg..." };
the `user` where the `id` is 1 and the `public key` is `A7sg...`

Transactions

struct Transaction {
  from: String,
  to: String,
  amount: f64
}

let transactions = vec![
  Transaction { from: "address1", to: "address2", amount: 10.2 },
  Transaction { from: "address2", to: "address3", amount: 5.8 },
];
the list henceforth `the list` where an item is the `transaction` where the `from` is `address1` and the `to` is `address2` and the `amount` is 10.2 and another item of `the list` is the `transaction` where the `from` is `address2` and the `to` is `address3` and the `amount` is 5.8

Dependencies

~210–510KB
~10K SLoC