nvzson

• nvzson

• zson is a simple format to describe nest-structure

• which is used for test z-dsl of nvlang, normally USELESS

• only z AND [ AND ] AND { AND } AND <digit> is valid char other-chars treated as white-space

• z is a placeholder

• [ and ] means array

• <number> means repeated times

   [z[zzz][z]]    means  [ any, [any,any,any], [any  ] ]
   [z[3z][z2]     means  [ any, [ ...REPEAT(z,3)], [any  ...REPEAT(']',2) 
                         [ any, [any,any,any], [any  ] ]

   for example

   {
       a: {
           b0:100
           b1:101
       },
       x:[10,20,30]
   }

   cant be map to  {{zz}[zzz]} with z AS:
       struct {
           uint8_t  type;            // dict ary int
           uint8_t  key[2];         // max-length of 'a','b','b0','b1'  if '' means its a array-element
           uint8_t  val;            // 100 101 10 20 30
       } 

install

• npm install nvzson

usage

    const {
        parse_from_str,
        stringify
    } = require("nvzson");

example

    > parse_from_str(`[z[zzz][z]]`)
    [ 'z', [ 'z', 'z', 'z' ], [ 'z' ] ]


    > parse_from_str(`[z[3z][z2]`)
    [ 'z', [ 'z', 'z', 'z' ], [ 'z' ] ]


    > console.dir({a:[10,[20,{x:11,y:22},[40]],50],b:300,c:400},{depth:null})
    {
      a: [ 10, [ 20, { x: 11, y: 22 }, [ 40 ] ], 50 ],
      b: 300,
      c: 400
    }

    > var j = parse_from_str(`{
        [ 
          z 
          [
             z
             {2z}
             [z]
          ]
          z
        ] 
        z
        z
    }`)

    > console.dir(j,{depth:null})
    {
      ':0': [ 'z', [ 'z', { ':0': 'z', ':1': 'z' }, [ 'z' ] ], 'z' ],
      ':1': 'z',
      ':2': 'z'
    }        








    > stringify({a:[10,[20,{x:11,y:22},[40]],50],b:300,c:400},true/*compress block*/)
    '{[z[z{2z}[z2]z]2z}'
    > stringify({a:[10,[20,{x:11,y:22},[40]],50],b:300,c:400},false/*do NOT compress block*/)
    '{[z[z{2z}[z]]z]2z}'

APIS

    {
      _glb: { _un: undefined, _nu: null, _t: true, _f: false },
      _char: {
        Z: 'z',
        ALB: '[',
        ARB: ']',
        DLB: '{',
        DRB: '}',
        is_lower_z: [Function: is_lower_z],
        is_bracket: [Function: is_bracket],
        is_lbk: [Function: is_lbk],
        is_rbk: [Function: is_rbk],
        is_brace: [Function: is_brace],
        is_lbc: [Function: is_lbc],
        is_rbc: [Function: is_rbc],
        is_blk: [Function: is_blk],
        is_lblk: [Function: is_lblk],
        is_rblk: [Function: is_rblk],
        is_digit: [Function: is_digit],
        is_valid: [Function: is_valid]
      },
      _ser: { stringify: [Function: from_json] },
      _tok: {
        Mach: [class Mach extends Array],
        mach: Mach(2) [ 0, ___Box___(0) [] ],
        creat_mach: [Function: creat_mach],
        from_codes: [Function: from_codes],
        from_str: [Function: from_str],
        from_sg: [Function: from_sg],
        from_ag: [AsyncFunction: from_ag]
      },
      _parse: {
        Mach: [class Mach extends Array],
        creat_mach: [Function: creat_mach],
        mach: Mach(4) [ [], undefined, undefined, 0 ],
        from_codes: [Function: from_codes],
        from_str: [Function: from_str],
        from_sg: [Function: from_sg],
        from_ag: [AsyncFunction: from_ag]
      },
      parse_from_str: [Function: parse_from_str],
      stringify: [Function: from_json]
    }

LICENSE

• ISC