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• Code generation of models and serialization/deserialization tests
• Type safe checks in clients code (if programming language support type safety)

Requirements for scheme

Basically we can consider 3 types of items

1. Scalars 

• int: in SCALE integers can be encoded as fixed-width integer and compact integer. Compact integer itself has

  3

  4 modes. So generally we have

  4

  5 ways to serde integer (1 fixed-width +

  3

  4 modes of compact integers) 

  {
  

  Code Block
  language bash
  { "type": "int",

  
  

  "mode": "CompactTwoByte" //possible values FixedWidth, CompactSingleByte, CompactTwoByte, CompactFourByte, CompactBigInteger,

  
  

  }

  
  

• bool: no tricks here 

  {
  "type": "bool"
  }

2. Built-in containers 

• Option / Result / Vec / typle / array : basically we are interested in only inner values of the container

  [
  {
  "type": "Option",
  "item_type": {
  "type" : "bool"
  }

  
  
  },
  {
  "type": "Result",
  "item_type": {
  "type": "int",
  "mode": "CompactFourByte"
  }
  },
  {
  "type": "Vec",
  "item_type": {
  "type": "bool"
  }
  }
  ]
  

3. Custom containers 

• Structures

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