Nv-json-jshape NPM

nv-json-jshape

simple version of nvjson
for test class code-generator in nvlang

install

npm install nv-json-jshape

usage

  const jshape   = require("nv-json-jshape");

example

shape

    // ignore data-type(to null) , only keep key 

    > var rt = jshape({a:"ssss",b:[1,{k:"v"},3,[true,false,null]]})
    > rt.shape_
    { a: null, b: [ null, { k: null }, null, [ null, null, null ] ] }
    >
    > rt.$children_[0].shape_
    null
    > rt.$children_[0].K
    'a'
    > rt.$children_[1].shape_
    [ null, { k: null }, null, [ null, null, null ] ]
    > rt.$children_[1].K
    'b'
    > rt.$sdfs_.map(nd=>nd.shape_)
    [
      { a: null, b: [ null, [Object], null, [Array] ] },
      null,
      [ null, { k: null }, null, [ null, null, null ] ],
      null,
      { k: null },
      null,
      null,
      [ null, null, null ],
      null,
      null,
      null
    ]
    >

tshape

   n: null                 //null   will   be tanslated  to a <void*> in nvlang 
   S: string               //string will   be translated to a special-structure(similar to std::string just with utf8-support) in nvlang 
   N: number               //number will   be translated to <double>
   B: boolean              //bool   will   be translated to <bool>

   // A and D ONLY appeared IF be treated AS leaf
      A: array                //array  will   be translated to <std::tuple>(nvlang ONLY has list(dynamic length) AND tuple(fixed length)) 
      D: dict                 //dict   will   be translated to <struct>

   // by default, expand all
    > rt.tshape_
    {
      a: 'S',
      b: [ 'N', { k: 'S' }, 'N', [ 'B', 'B', 'n' ] ],
      c: [ { k: 'S' }, [ 'B', 'B', 'n' ] ]
    }
    >

cshape

   //for generate declaration from data 

            var rt = jshape(
            {
              "a": "ssss",       //0
              "b": [
                1,       //1
                {
                  "k": "v"  //2
                }, //3
                3, //4
                [
                  true, //5
                  false, //6
                  null   //7
                ] //8
              ], //9
              c: [
                  {
                      k:"vvv" //10
                  },//11
                  [
                      false,//12
                      true, //13
                      null  //14
                  ] //15
              ] //16
            } //17
            )

            > rt.cshape_
            [
              [ 3, { k: 'S' } ],
              [ 8, [ 'B', 'B', 'n' ] ],
              [ 9, [ 'N', 3, 'N', 8 ] ],
              [ 16, [ 3, 8 ] ],
              [ 17, { a: 'S', b: 9, c: 16 } ]
            ]
            >