WIP Jsonifier!

[Mark SiblyKeymaster]

Here’s my first attempt at a new ‘jsonifier’ system for converting data to/from json.

You’ll need a bleeding edge build of develop branch for the TypeInfo.NullValue feature.

This will eventually end up in the std module (there’s already the start of a jsonifier in there but that”ll go).

This demo shows the basic idea including the ability to jsonify cyclic data.

Monkey

Namespace jsonifier #Import "<std>" #Reflect jsonifier Using std.. 'Test class! Class C Property D1:D() Return _d1 Setter( d:D ) _d1=d End Property D2:D() Return _d2 Setter( d:D ) _d2=d End Property Position:Vec2i() Return _pos Setter( pos:Vec2i ) _pos=pos end Property Lives:Int() Return _lives Setter( lives:Int ) _lives=lives End Property Color:Color() Return _color Setter( color:Color ) _color=color End Property LocalMatrix:AffineMat4f() Return _lmatrix Setter( lmatrix:AffineMat4f ) _lmatrix=lmatrix End Operator To:String() Return "Pos="+Position+", Lives="+Lives End Private Field _d1:D Field _d2:D Field _lives:Int Field _pos:Vec2f Field _color:Color=graphics.Color.Red Field _lmatrix:AffineMat4f=New AffineMat4f End Class D Property C:C() Return _c Setter( c:C ) _c=c End Private Field _c:C End 'helper functions ' Function ToJsonArray<T>:JsonArray( values:T[] ) Where T Implements INumeric Local jvalues:=New JsonValue[values.Length] For Local i:=0 Until values.Length jvalues[i]=New JsonNumber( values[i] ) Next Return New JsonArray( jvalues ) End 'helper function ' Function ToArray<T>:T[]( jvalue:JsonValue ) Where T Implements INumeric Local jvalues:=jvalue.ToArray() Local values:=New T[jvalues.Length] For Local i:=0 Until values.Length values[i]=jvalues[i].ToNumber() Next Return values End 'base class for custom jsonifier 'extensions'. ' Class JsonifierExt Const All:=New Stack<JsonifierExt> Method New() All.Add( Self ) End Method Jsonify:JsonValue( value:Variant,jsonifier:Jsonifier ) Abstract Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo,jsonifier:Jsonifier ) Abstract End 'A sample jsonifier extension - just does Vec2i for now. ' Class StdJsonifierExt Extends JsonifierExt Const Instance:=New StdJsonifierExt Method Jsonify:JsonValue( value:Variant,jsonifier:Jsonifier ) Override Select value.Type Case Typeof<Vec2i> Local v:=Cast<Vec2i>( value ) Return ToJsonArray( New Int[]( v.x,v.y ) ) Case Typeof<Vec2f> Local v:=Cast<Vec2f>( value ) Return ToJsonArray( New Float[]( v.x,v.y ) ) Case Typeof<Recti> Local v:=Cast<Recti>( value ) Return ToJsonArray( New Int[]( v.min.x,v.min.y,v.max.x,v.max.y ) ) Case Typeof<Rectf> Local v:=Cast<Rectf>( value ) Return ToJsonArray( New Float[]( v.min.x,v.min.y,v.max.x,v.max.y ) ) Case Typeof<Vec3f> Local v:=Cast<Vec3f>( value ) Return ToJsonArray( New Float[]( v.x,v.y,v.z ) ) Case Typeof<AffineMat4f> Local v:=Cast<AffineMat4f>( value ) Return ToJsonArray( New Float[]( v.m.i.x,v.m.i.y,v.m.i.z, v.m.j.x,v.m.j.y,v.m.j.z, v.m.k.x,v.m.k.y,v.m.k.z, v.t.x,v.t.y,v.t.z ) ) Case Typeof<Color> Local v:=Cast<Color>( value ) Return ToJsonArray( New Float[]( v.r,v.g,v.b,v.a ) ) End Return Null End Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo,jsonifier:Jsonifier ) Override Select type Case Typeof<Vec2i> Local v:=ToArray<Int>( jvalue ) Return New Vec2i( v[0],v[1] ) Case Typeof<Vec2f> Local v:=ToArray<Float>( jvalue ) Return New Vec2f( v[0],v[1] ) Case Typeof<Recti> Local v:=ToArray<Int>( jvalue ) Return New Recti( v[0],v[1],v[2],v[3] ) Case Typeof<Rectf> Local v:=ToArray<Float>( jvalue ) Return New Rectf( v[0],v[1],v[2],v[3] ) Case Typeof<Vec3f> Local v:=ToArray<Float>( jvalue ) Return New Vec3f( v[0],v[1],v[2] ) Case Typeof<Color> Local v:=ToArray<Float>( jvalue ) Return New Color( v[0],v[1],v[2],v[3] ) Case Typeof<AffineMat4f> Local v:=ToArray<Float>( jvalue ) Return New AffineMat4f( v[0],v[1],v[2], v[3],v[4],v[5], v[6],v[7],v[8], v[9],v[10],v[11] ) End Return Null End End Class Jsonifier Method CreateReference:JsonObject( obj:Object ) Local jobj:=New JsonObject Local id:="@"+(_jsonified.Count()+1) jobj.SetString( "$class",obj.InstanceType.Name ) jobj.SetString( "$id",id ) _jsonified[obj]=id Return jobj End Method Jsonify:JsonValue( value:Variant ) 'handle primitive types Select value.Type Case Typeof<Bool> Return New JsonBool( Cast<Bool>( value ) ) Case Typeof<Int> Return New JsonNumber( Cast<Int>( value ) ) Case Typeof<Float> Return New JsonNumber( Cast<Float>( value ) ) Case Typeof<String> Return New JsonString( Cast<String>( value ) ) End 'handle references If value.Type.Kind="Class" Local obj:=Cast<Object>( value ) If Not obj Return JsonValue.NullValue Local id:=_jsonified[obj] If id Return New JsonString( id ) Endif 'try custom jsonifiers For Local jext:=Eachin JsonifierExt.All Local jvalue:=jext.Jsonify( value,Self ) If jvalue Return jvalue Next 'automated jsonification of classes Select value.Type.Kind Case "Class" Local obj:=Cast<Object>( value ) Local jobj:=CreateReference( obj ) If obj JsonifyProperties( obj,jobj,obj.InstanceType ) Return jobj End RuntimeError( "TODO: No jsonifier found for type '"+value.Type+"'" ) Return Null End Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo ) 'handle primitive types Select type Case Typeof<Bool> Return jvalue.ToBool() Case Typeof<Int> Return Int( jvalue.ToNumber() ) Case Typeof<Float> Return Float( jvalue.ToNumber() ) Case Typeof<String> Return jvalue.ToString() End 'handle references If type.Kind="Class" If jvalue.IsNull Return type.NullValue If jvalue.IsString Return _dejsonified[ jvalue.ToString() ] Endif 'try custom jsonifiers For Local jext:=Eachin JsonifierExt.All Local value:=jext.Dejsonify( jvalue,type,Self ) If value Return value Next 'automated dejsonification Select type.Kind Case "Class" Local jobj:=Cast<JsonObject>( jvalue ) Local type:=TypeInfo.GetType( jobj.GetString( "$class" ) ) Local id:=jobj.GetString( "$id" ) Local ctor:=type.GetDecl( "New",Typeof<Void()> ) Local obj:=Cast<Object>( ctor.Invoke( Null,Null ) ) _dejsonified[id]=obj DejsonifyProperties( obj,jobj,type ) Return obj End RuntimeError( "TODO: No dejsonifier found for type '"+type+"'" ) Return Null End Private Field _jsonified:=New Map<Object,String> Field _dejsonified:=New Map<String,Object> Method JsonifyProperties( obj:Object,jobj:JsonObject,type:TypeInfo ) If type.SuperType JsonifyProperties( obj,jobj,type.SuperType ) For Local d:=Eachin type.GetDecls() If d.Kind<>"Property" Continue 'Note: Add DeclInfo.Access property so we can do public fields only? If Not d.Gettable Or Not d.Settable Continue jobj.SetValue( d.Name,Jsonify( d.Get( obj ) ) ) Next End Method DejsonifyProperties( obj:Object,jobj:JsonObject,type:TypeInfo ) If type.SuperType DejsonifyProperties( obj,jobj,type.SuperType ) For Local d:=Eachin type.GetDecls() If d.Kind<>"Property" Continue 'Note: Add DeclInfo.Access property so we can do public fields only? If Not d.Gettable Or Not d.Settable Continue d.Set( obj,Dejsonify( jobj.GetValue( d.Name ),d.Type ) ) Next End End Function Main() Local jsonifier:=New Jsonifier Local c:=New C c.Position=New Vec2i( 10,20 ) c.Lives=10 Local d:=New D c.D1=d c.D2=d d.C=New C d.C.D1=d Local jobj:=jsonifier.Jsonify( c ) Print jobj.ToJson() Local c2:=Cast<C>( jsonifier.Dejsonify( jobj,Typeof<Object> ) ) Print c2 End

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Namespace jsonifier   #Import "<std>"   #Reflect jsonifier   Using std..   'Test class! Class C Property D1:D() Return _d1 Setter( d:D ) _d1=d End Property D2:D() Return _d2 Setter( d:D ) _d2=d End Property Position:Vec2i() Return _pos Setter( pos:Vec2i ) _pos=pos end Property Lives:Int() Return _lives Setter( lives:Int ) _lives=lives End Property Color:Color() Return _color Setter( color:Color ) _color=color End Property LocalMatrix:AffineMat4f() Return _lmatrix Setter( lmatrix:AffineMat4f ) _lmatrix=lmatrix End Operator To:String() Return "Pos="+Position+", Lives="+Lives End Private Field _d1:D Field _d2:D Field _lives:Int Field _pos:Vec2f Field _color:Color=graphics.Color.Red Field _lmatrix:AffineMat4f=New AffineMat4f End   Class D   Property C:C() Return _c Setter( c:C ) _c=c End Private Field _c:C   End   'helper functions ' Function ToJsonArray<T>:JsonArray( values:T[] ) Where T Implements INumeric Local jvalues:=New JsonValue[values.Length] For Local i:=0 Until values.Length jvalues[i]=New JsonNumber( values[i] ) Next Return New JsonArray( jvalues ) End   'helper function ' Function ToArray<T>:T[]( jvalue:JsonValue ) Where T Implements INumeric Local jvalues:=jvalue.ToArray() Local values:=New T[jvalues.Length] For Local i:=0 Until values.Length values[i]=jvalues[i].ToNumber() Next Return values End   'base class for custom jsonifier 'extensions'. ' Class JsonifierExt Const All:=New Stack<JsonifierExt> Method New() All.Add( Self ) End Method Jsonify:JsonValue( value:Variant,jsonifier:Jsonifier ) Abstract Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo,jsonifier:Jsonifier ) Abstract End   'A sample jsonifier extension - just does Vec2i for now. ' Class StdJsonifierExt Extends JsonifierExt Const Instance:=New StdJsonifierExt   Method Jsonify:JsonValue( value:Variant,jsonifier:Jsonifier ) Override Select value.Type Case Typeof<Vec2i> Local v:=Cast<Vec2i>( value ) Return ToJsonArray( New Int[]( v.x,v.y ) ) Case Typeof<Vec2f> Local v:=Cast<Vec2f>( value ) Return ToJsonArray( New Float[]( v.x,v.y ) ) Case Typeof<Recti> Local v:=Cast<Recti>( value ) Return ToJsonArray( New Int[]( v.min.x,v.min.y,v.max.x,v.max.y ) ) Case Typeof<Rectf> Local v:=Cast<Rectf>( value ) Return ToJsonArray( New Float[]( v.min.x,v.min.y,v.max.x,v.max.y ) ) Case Typeof<Vec3f> Local v:=Cast<Vec3f>( value ) Return ToJsonArray( New Float[]( v.x,v.y,v.z ) ) Case Typeof<AffineMat4f> Local v:=Cast<AffineMat4f>( value ) Return ToJsonArray( New Float[]( v.m.i.x,v.m.i.y,v.m.i.z, v.m.j.x,v.m.j.y,v.m.j.z, v.m.k.x,v.m.k.y,v.m.k.z, v.t.x,v.t.y,v.t.z ) ) Case Typeof<Color> Local v:=Cast<Color>( value ) Return ToJsonArray( New Float[]( v.r,v.g,v.b,v.a ) ) End Return Null End   Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo,jsonifier:Jsonifier ) Override Select type Case Typeof<Vec2i> Local v:=ToArray<Int>( jvalue ) Return New Vec2i( v[0],v[1] ) Case Typeof<Vec2f> Local v:=ToArray<Float>( jvalue ) Return New Vec2f( v[0],v[1] ) Case Typeof<Recti> Local v:=ToArray<Int>( jvalue ) Return New Recti( v[0],v[1],v[2],v[3] ) Case Typeof<Rectf> Local v:=ToArray<Float>( jvalue ) Return New Rectf( v[0],v[1],v[2],v[3] ) Case Typeof<Vec3f> Local v:=ToArray<Float>( jvalue ) Return New Vec3f( v[0],v[1],v[2] ) Case Typeof<Color> Local v:=ToArray<Float>( jvalue ) Return New Color( v[0],v[1],v[2],v[3] ) Case Typeof<AffineMat4f> Local v:=ToArray<Float>( jvalue ) Return New AffineMat4f( v[0],v[1],v[2], v[3],v[4],v[5], v[6],v[7],v[8], v[9],v[10],v[11] ) End Return Null End End   Class Jsonifier Method CreateReference:JsonObject( obj:Object ) Local jobj:=New JsonObject Local id:="@"+(_jsonified.Count()+1) jobj.SetString( "$class",obj.InstanceType.Name ) jobj.SetString( "$id",id ) _jsonified[obj]=id Return jobj End Method Jsonify:JsonValue( value:Variant )   'handle primitive types Select value.Type Case Typeof<Bool> Return New JsonBool( Cast<Bool>( value ) ) Case Typeof<Int> Return New JsonNumber( Cast<Int>( value ) ) Case Typeof<Float> Return New JsonNumber( Cast<Float>( value ) ) Case Typeof<String> Return New JsonString( Cast<String>( value ) ) End 'handle references If value.Type.Kind="Class" Local obj:=Cast<Object>( value ) If Not obj Return JsonValue.NullValue Local id:=_jsonified[obj] If id Return New JsonString( id ) Endif 'try custom jsonifiers For Local jext:=Eachin JsonifierExt.All Local jvalue:=jext.Jsonify( value,Self ) If jvalue Return jvalue Next 'automated jsonification of classes Select value.Type.Kind Case "Class" Local obj:=Cast<Object>( value ) Local jobj:=CreateReference( obj ) If obj JsonifyProperties( obj,jobj,obj.InstanceType ) Return jobj End RuntimeError( "TODO: No jsonifier found for type '"+value.Type+"'" ) Return Null End Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo ) 'handle primitive types Select type Case Typeof<Bool> Return jvalue.ToBool() Case Typeof<Int> Return Int( jvalue.ToNumber() ) Case Typeof<Float> Return Float( jvalue.ToNumber() ) Case Typeof<String> Return jvalue.ToString() End 'handle references If type.Kind="Class" If jvalue.IsNull Return type.NullValue If jvalue.IsString Return _dejsonified[ jvalue.ToString() ] Endif 'try custom jsonifiers For Local jext:=Eachin JsonifierExt.All Local value:=jext.Dejsonify( jvalue,type,Self ) If value Return value Next 'automated dejsonification Select type.Kind Case "Class" Local jobj:=Cast<JsonObject>( jvalue ) Local type:=TypeInfo.GetType( jobj.GetString( "$class" ) ) Local id:=jobj.GetString( "$id" ) Local ctor:=type.GetDecl( "New",Typeof<Void()> ) Local obj:=Cast<Object>( ctor.Invoke( Null,Null ) ) _dejsonified[id]=obj DejsonifyProperties( obj,jobj,type ) Return obj End RuntimeError( "TODO: No dejsonifier found for type '"+type+"'" ) Return Null End Private   Field _jsonified:=New Map<Object,String> Field _dejsonified:=New Map<String,Object> Method JsonifyProperties( obj:Object,jobj:JsonObject,type:TypeInfo ) If type.SuperType JsonifyProperties( obj,jobj,type.SuperType ) For Local d:=Eachin type.GetDecls() If d.Kind<>"Property" Continue 'Note: Add DeclInfo.Access property so we can do public fields only? If Not d.Gettable Or Not d.Settable Continue jobj.SetValue( d.Name,Jsonify( d.Get( obj ) ) ) Next End Method DejsonifyProperties( obj:Object,jobj:JsonObject,type:TypeInfo  ) If type.SuperType DejsonifyProperties( obj,jobj,type.SuperType )   For Local d:=Eachin type.GetDecls() If d.Kind<>"Property" Continue 'Note: Add DeclInfo.Access property so we can do public fields only? If Not d.Gettable Or Not d.Settable Continue d.Set( obj,Dejsonify( jobj.GetValue( d.Name ),d.Type ) ) Next End End   Function Main() Local jsonifier:=New Jsonifier Local c:=New C c.Position=New Vec2i( 10,20 ) c.Lives=10 Local d:=New D c.D1=d c.D2=d d.C=New C d.C.D1=d   Local jobj:=jsonifier.Jsonify( c ) Print jobj.ToJson() Local c2:=Cast<C>( jsonifier.Dejsonify( jobj,Typeof<Object> ) ) Print c2 End

[scurtyParticipant]

Ooo! Is it possible to add blobs? (Basically just Databuffers) for adding any value? Like New JsonBlob(New DataBuffer(20))
Then we can save images, files, or really anything into a Json File. Would be amazingly convenient for sending data through TCP.
Great work Mark.

So far I’m just converting a PNG to a JsonString and back again using a modified version of Nerobots datapacker.

[EthernautParticipant]

Awesome! Time to scrap my w.i.p. serializer module. Good riddance…

[Mark SiblyKeymaster]

> Ooo! Is it possible to add blobs?

Json doesn’t support ‘blobs’, but you can roll your own.

For example, the gltf format allows you to use ‘data:’ URLs, and has an ‘accessor’ system that allows for data to be stored in external files. These aren’t actually part of json, but implemented ‘on top of’ json. I don’t see why we can’t implement/steal similar systems though.

Here’s a new WIP version that features an attempt at serializing constructors. Really rough and there’s lots to sort out here but it’s looking promising. Note that the LoadC and CreateC functions are really just ‘encapsulating’ the function call ‘C.Load( path:String )’ and the simple ctor ‘New C( Vec2i )’. I have  no idea how this still will be implemented in practice yet though!

Monkey

Namespace jsonifier #Import "<std>" #Reflect jsonifier Using std.. Function LoadC:C( path:String ) Local scope:=TypeInfo.GetType( "jsonifier.C" ) Local decl:=scope.GetDecl( "Load",Typeof<C(String)> ) Local args:=New Variant[]( path ) Local ctor:=New CtorInvokation( scope,decl,args ) Local c:=Cast<C>( ctor.Execute() ) Return c End Function CreateC:C( pos:Vec2i ) Local scope:=TypeInfo.GetType( "jsonifier.C" ) Local decl:=scope.GetDecl( "New",Typeof<Void(Vec2i)> ) Local args:=New Variant[]( pos ) Local ctor:=New CtorInvokation( scope,decl,args ) Local c:=Cast<C>( ctor.Execute() ) Return c End 'Test class! Class C Method New( pos:Vec2i ) Print "New C, pos="+pos Position=pos End Function Load:C( path:String ) Print "C.Load, path="+path Return New C End Property Ctor:CtorInvokation() Return _ctor Setter( ctor:CtorInvokation ) _ctor=ctor End Property D1:D() Return _d1 Setter( d:D ) _d1=d End Property D2:D() Return _d2 Setter( d:D ) _d2=d End Property Position:Vec2i() Return _pos Setter( pos:Vec2i ) _pos=pos end Property Lives:Int() Return _lives Setter( lives:Int ) _lives=lives End Property Color:Color() Return _color Setter( color:Color ) _color=color End Property LocalMatrix:AffineMat4f() Return _lmatrix Setter( lmatrix:AffineMat4f ) _lmatrix=lmatrix End Operator To:String() Return "Pos="+Position+", Lives="+Lives End Private Field _ctor:CtorInvokation Field _d1:D Field _d2:D Field _lives:Int Field _pos:Vec2f Field _color:Color=graphics.Color.Red Field _lmatrix:AffineMat4f=New AffineMat4f Method New() End End Class D Property C:C() Return _c Setter( c:C ) _c=c End Private Field _c:C End Class CtorInvokation Method New( scope:TypeInfo,decl:DeclInfo,args:Variant[] ) _scope=scope _decl=decl _args=args End Property Scope:TypeInfo() Return _scope End Property Decl:DeclInfo() Return _decl End Property Args:Variant[]() Return _args End Method Execute:Variant() Local inst:=_decl.Invoke( Null,_args ) Local decl:=inst.Type.GetDecl( "Ctor" ) If decl And decl.Kind="Property" And decl.Settable And decl.Gettable decl.Set( inst,Self ) Return inst End Private Field _scope:TypeInfo Field _decl:DeclInfo Field _args:Variant[] End Class CtorJsonifier Extends JsonifierExt Const Instance:=New CtorJsonifier Method Jsonify:JsonValue( value:Variant,jsonifier:Jsonifier ) Override Select value.Type Case Typeof<CtorInvokation> Local v:=Cast<CtorInvokation>( value ) Local jobj:=New JsonObject jobj.SetString( "scope",v.Scope.Name ) jobj.SetString( "decl",v.Decl.Name ) jobj.SetString( "type",v.Decl.Type ) jobj.SetValue( "args",jsonifier.JsonifyArray( v.Args ) ) Return jobj End Return Null End Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo,jsonifier:Jsonifier ) Override Select type Case Typeof<CtorInvokation> Local jobj:=Cast<JsonObject>( jvalue ) Local scope:=TypeInfo.GetType( jobj.GetString( "scope" ) ) Local dname:=jobj.GetString( "decl" ) Local dtype:=jobj.GetString( "type" ) Local jargs:=jobj.GetArray( "args" ) Local decl:DeclInfo For Local tdecl:=Eachin scope.GetDecls( dname ) If String(tdecl.Type)<>dtype Continue decl=tdecl Exit Next Local args:=New Variant[jargs.Length] For Local i:=0 Until args.Length args[i]=jsonifier.Dejsonify( jargs[i],decl.Type.ParamTypes[i] ) Next Local ctor:=New CtorInvokation( scope,decl,args ) Return ctor End Return Null End End 'Function ToJson:JsonObject( inv:Invokation ) 'End 'Function ToInvokation:Invokation( jobj:JsonObject ) 'End 'base class for custom jsonifier 'extensions'. ' Class JsonifierExt Const All:=New Stack<JsonifierExt> Method New() All.Add( Self ) End Method Jsonify:JsonValue( value:Variant,jsonifier:Jsonifier ) Abstract Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo,jsonifier:Jsonifier ) Abstract End 'A sample jsonifier extension - just does Vec2i for now. ' Class StdJsonifierExt Extends JsonifierExt Const Instance:=New StdJsonifierExt Method Jsonify:JsonValue( value:Variant,jsonifier:Jsonifier ) Override Select value.Type Case Typeof<Vec2i> Local v:=Cast<Vec2i>( value ) Return jsonifier.JsonifyArray( New Int[]( v.x,v.y ) ) Case Typeof<Vec2f> Local v:=Cast<Vec2f>( value ) Return jsonifier.JsonifyArray( New Float[]( v.x,v.y ) ) Case Typeof<Recti> Local v:=Cast<Recti>( value ) Return jsonifier.JsonifyArray( new Int[]( v.min.x,v.min.y,v.max.x,v.max.y ) ) Case Typeof<Rectf> Local v:=Cast<Rectf>( value ) Return jsonifier.JsonifyArray( New Float[]( v.min.x,v.min.y,v.max.x,v.max.y ) ) Case Typeof<Vec3f> Local v:=Cast<Vec3f>( value ) Return jsonifier.JsonifyArray( New Float[]( v.x,v.y,v.z ) ) Case Typeof<AffineMat4f> Local v:=Cast<AffineMat4f>( value ) Return jsonifier.JsonifyArray( New Float[]( v.m.i.x,v.m.i.y,v.m.i.z, v.m.j.x,v.m.j.y,v.m.j.z, v.m.k.x,v.m.k.y,v.m.k.z, v.t.x,v.t.y,v.t.z ) ) Case Typeof<Color> Local v:=Cast<Color>( value ) Return jsonifier.JsonifyArray( New Float[]( v.r,v.g,v.b,v.a ) ) End Return Null End Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo,jsonifier:Jsonifier ) Override Select type Case Typeof<Vec2i> Local v:=jsonifier.DejsonifyArray<Int>( jvalue ) Return New Vec2i( v[0],v[1] ) Case Typeof<Vec2f> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New Vec2f( v[0],v[1] ) Case Typeof<Recti> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New Recti( v[0],v[1],v[2],v[3] ) Case Typeof<Rectf> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New Rectf( v[0],v[1],v[2],v[3] ) Case Typeof<Vec3f> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New Vec3f( v[0],v[1],v[2] ) Case Typeof<Color> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New Color( v[0],v[1],v[2],v[3] ) Case Typeof<AffineMat4f> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New AffineMat4f( v[0],v[1],v[2], v[3],v[4],v[5], v[6],v[7],v[8], v[9],v[10],v[11] ) End Return Null End End Class Jsonifier Method CreateReference:JsonObject( obj:Object ) Local jobj:=New JsonObject Local id:="@"+(_jsonified.Count()+1) jobj.SetString( "$class",obj.InstanceType.Name ) jobj.SetString( "$id",id ) _jsonified[obj]=id Return jobj End Method Jsonify:JsonValue( value:Variant ) Local type:=value.Type 'handle primitive types Select type Case Typeof<Bool> Return New JsonBool( Cast<Bool>( value ) ) Case Typeof<Int> Return New JsonNumber( Cast<Int>( value ) ) Case Typeof<Float> Return New JsonNumber( Cast<Float>( value ) ) Case Typeof<String> Return New JsonString( Cast<String>( value ) ) End 'handle references Select type.Kind Case "Class" Local obj:=Cast<Object>( value ) If Not obj Return JsonValue.NullValue Local id:=_jsonified[obj] If id Return New JsonString( id ) End 'try custom jsonifiers For Local jext:=Eachin JsonifierExt.All Local jvalue:=jext.Jsonify( value,Self ) If jvalue Return jvalue Next 'automated jsonification of classes Select type.Kind Case "Class" Local obj:=Cast<Object>( value ) Local jobj:=CreateReference( obj ) If obj JsonifyProperties( obj,jobj,obj.InstanceType ) Return jobj End RuntimeError( "TODO: No jsonifier found for type '"+type+"'" ) Return Null End Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo ) 'handle primitive types Select type Case Typeof<Bool> Return jvalue.ToBool() Case Typeof<Int> Return Int( jvalue.ToNumber() ) Case Typeof<Float> Return Float( jvalue.ToNumber() ) Case Typeof<String> Return jvalue.ToString() End 'handle references Select type.Kind Case "Class" If jvalue.IsNull Return type.NullValue If jvalue.IsString Return _dejsonified[ jvalue.ToString() ] End 'try custom jsonifiers For Local jext:=Eachin JsonifierExt.All Local value:=jext.Dejsonify( jvalue,type,Self ) If value Return value Next 'automated dejsonification Select type.Kind Case "Class" Local jobj:=Cast<JsonObject>( jvalue ) Local type:=TypeInfo.GetType( jobj.GetString( "$class" ) ) Local id:=jobj.GetString( "$id" ) Local obj:Object If jobj.Contains( "Ctor" ) Local ctor:=Cast<CtorInvokation>( Dejsonify( jobj.GetValue( "Ctor" ),Typeof<CtorInvokation> ) ) obj=Cast<Object>( ctor.Execute() ) Else Local ctor:=type.GetDecl( "New",Typeof<Void()> ) obj=Cast<Object>( ctor.Invoke( Null,Null ) ) Endif _dejsonified[id]=obj DejsonifyProperties( obj,jobj,type ) Return obj End RuntimeError( "TODO: No dejsonifier found for type '"+type+"'" ) Return Null End Method JsonifyArray<C>:JsonArray( values:C[] ) Local jvalues:=New JsonArray( values.Length ) For Local i:=0 Until jvalues.Length jvalues[i]=Jsonify( values[i]) Next Return jvalues End Method DejsonifyArray<C>:C[]( jvalue:JsonValue ) Local jvalues:=jvalue.ToArray() Local values:=New C[jvalues.Length] For Local i:=0 Until values.Length values[i]=Cast<C>( Dejsonify( jvalues[i],Typeof<C> ) ) Next Return values End Private Field _jsonified:=New Map<Object,String> Field _dejsonified:=New Map<String,Object> Method JsonifyProperties( obj:Object,jobj:JsonObject,type:TypeInfo ) If type.SuperType JsonifyProperties( obj,jobj,type.SuperType ) For Local d:=Eachin type.GetDecls() If d.Kind<>"Property" Continue 'Note: Add DeclInfo.Access property so we can do public fields only? If Not d.Gettable Or Not d.Settable Continue jobj.SetValue( d.Name,Jsonify( d.Get( obj ) ) ) Next End Method DejsonifyProperties( obj:Object,jobj:JsonObject,type:TypeInfo ) If type.SuperType DejsonifyProperties( obj,jobj,type.SuperType ) For Local d:=Eachin type.GetDecls() If d.Kind<>"Property" Continue 'Note: Add DeclInfo.Access property so we can do public fields only? If Not d.Gettable Or Not d.Settable Continue d.Set( obj,Dejsonify( jobj.GetValue( d.Name ),d.Type ) ) Next End End Function Main() Local jsonifier:=New Jsonifier Local c:=CreateC( New Vec2i( 100,200 ) ) c.Position=New Vec2i( 10,20 ) c.Lives=10 Local d:=New D c.D1=d c.D2=d d.C=LoadC( "asset::blah" ) d.C.D1=d Local jobj:=jsonifier.Jsonify( c ) Print jobj.ToJson() Local c2:=Cast<C>( jsonifier.Dejsonify( jobj,Typeof<Object> ) ) Print c2 End

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Namespace jsonifier   #Import "<std>"   #Reflect jsonifier   Using std..   Function LoadC:C( path:String ) Local scope:=TypeInfo.GetType( "jsonifier.C" ) Local decl:=scope.GetDecl( "Load",Typeof<C(String)> ) Local args:=New Variant[]( path ) Local ctor:=New CtorInvokation( scope,decl,args ) Local c:=Cast<C>( ctor.Execute() ) Return c End   Function CreateC:C( pos:Vec2i ) Local scope:=TypeInfo.GetType( "jsonifier.C" ) Local decl:=scope.GetDecl( "New",Typeof<Void(Vec2i)> ) Local args:=New Variant[]( pos ) Local ctor:=New CtorInvokation( scope,decl,args ) Local c:=Cast<C>( ctor.Execute() ) Return c End   'Test class! Class C Method New( pos:Vec2i ) Print "New C, pos="+pos Position=pos End   Function Load:C( path:String ) Print "C.Load, path="+path Return New C End Property Ctor:CtorInvokation() Return _ctor Setter( ctor:CtorInvokation ) _ctor=ctor End Property D1:D() Return _d1 Setter( d:D ) _d1=d End Property D2:D() Return _d2 Setter( d:D ) _d2=d End Property Position:Vec2i() Return _pos Setter( pos:Vec2i ) _pos=pos end Property Lives:Int() Return _lives Setter( lives:Int ) _lives=lives End Property Color:Color() Return _color Setter( color:Color ) _color=color End Property LocalMatrix:AffineMat4f() Return _lmatrix Setter( lmatrix:AffineMat4f ) _lmatrix=lmatrix End Operator To:String() Return "Pos="+Position+", Lives="+Lives End Private Field _ctor:CtorInvokation Field _d1:D Field _d2:D Field _lives:Int Field _pos:Vec2f Field _color:Color=graphics.Color.Red Field _lmatrix:AffineMat4f=New AffineMat4f Method New() End End   Class D   Property C:C() Return _c Setter( c:C ) _c=c End Private Field _c:C   End   Class CtorInvokation Method New( scope:TypeInfo,decl:DeclInfo,args:Variant[] ) _scope=scope _decl=decl _args=args End Property Scope:TypeInfo() Return _scope End Property Decl:DeclInfo() Return _decl End Property Args:Variant[]() Return _args End Method Execute:Variant() Local inst:=_decl.Invoke( Null,_args ) Local decl:=inst.Type.GetDecl( "Ctor" ) If decl And decl.Kind="Property" And decl.Settable And decl.Gettable decl.Set( inst,Self ) Return inst End Private Field _scope:TypeInfo Field _decl:DeclInfo Field _args:Variant[] End   Class CtorJsonifier Extends JsonifierExt Const Instance:=New CtorJsonifier Method Jsonify:JsonValue( value:Variant,jsonifier:Jsonifier ) Override Select value.Type Case Typeof<CtorInvokation> Local v:=Cast<CtorInvokation>( value ) Local jobj:=New JsonObject jobj.SetString( "scope",v.Scope.Name ) jobj.SetString( "decl",v.Decl.Name ) jobj.SetString( "type",v.Decl.Type ) jobj.SetValue( "args",jsonifier.JsonifyArray( v.Args ) ) Return jobj End Return Null End Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo,jsonifier:Jsonifier ) Override Select type Case Typeof<CtorInvokation> Local jobj:=Cast<JsonObject>( jvalue ) Local scope:=TypeInfo.GetType( jobj.GetString( "scope" ) ) Local dname:=jobj.GetString( "decl" ) Local dtype:=jobj.GetString( "type" ) Local jargs:=jobj.GetArray( "args" ) Local decl:DeclInfo For Local tdecl:=Eachin scope.GetDecls( dname ) If String(tdecl.Type)<>dtype Continue decl=tdecl Exit Next Local args:=New Variant[jargs.Length] For Local i:=0 Until args.Length args[i]=jsonifier.Dejsonify( jargs[i],decl.Type.ParamTypes[i] ) Next Local ctor:=New CtorInvokation( scope,decl,args ) Return ctor End Return Null End End       'Function ToJson:JsonObject( inv:Invokation ) 'End   'Function ToInvokation:Invokation( jobj:JsonObject ) 'End   'base class for custom jsonifier 'extensions'. ' Class JsonifierExt Const All:=New Stack<JsonifierExt> Method New() All.Add( Self ) End Method Jsonify:JsonValue( value:Variant,jsonifier:Jsonifier ) Abstract Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo,jsonifier:Jsonifier ) Abstract End   'A sample jsonifier extension - just does Vec2i for now. ' Class StdJsonifierExt Extends JsonifierExt Const Instance:=New StdJsonifierExt   Method Jsonify:JsonValue( value:Variant,jsonifier:Jsonifier ) Override Select value.Type Case Typeof<Vec2i> Local v:=Cast<Vec2i>( value ) Return jsonifier.JsonifyArray( New Int[]( v.x,v.y ) ) Case Typeof<Vec2f> Local v:=Cast<Vec2f>( value ) Return jsonifier.JsonifyArray( New Float[]( v.x,v.y ) ) Case Typeof<Recti> Local v:=Cast<Recti>( value ) Return jsonifier.JsonifyArray( new Int[]( v.min.x,v.min.y,v.max.x,v.max.y ) ) Case Typeof<Rectf> Local v:=Cast<Rectf>( value ) Return jsonifier.JsonifyArray( New Float[]( v.min.x,v.min.y,v.max.x,v.max.y ) ) Case Typeof<Vec3f> Local v:=Cast<Vec3f>( value ) Return jsonifier.JsonifyArray( New Float[]( v.x,v.y,v.z ) ) Case Typeof<AffineMat4f> Local v:=Cast<AffineMat4f>( value ) Return jsonifier.JsonifyArray( New Float[]( v.m.i.x,v.m.i.y,v.m.i.z, v.m.j.x,v.m.j.y,v.m.j.z, v.m.k.x,v.m.k.y,v.m.k.z, v.t.x,v.t.y,v.t.z ) ) Case Typeof<Color> Local v:=Cast<Color>( value ) Return jsonifier.JsonifyArray( New Float[]( v.r,v.g,v.b,v.a ) ) End Return Null End   Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo,jsonifier:Jsonifier ) Override Select type Case Typeof<Vec2i> Local v:=jsonifier.DejsonifyArray<Int>( jvalue ) Return New Vec2i( v[0],v[1] ) Case Typeof<Vec2f> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New Vec2f( v[0],v[1] ) Case Typeof<Recti> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New Recti( v[0],v[1],v[2],v[3] ) Case Typeof<Rectf> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New Rectf( v[0],v[1],v[2],v[3] ) Case Typeof<Vec3f> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New Vec3f( v[0],v[1],v[2] ) Case Typeof<Color> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New Color( v[0],v[1],v[2],v[3] ) Case Typeof<AffineMat4f> Local v:=jsonifier.DejsonifyArray<Float>( jvalue ) Return New AffineMat4f( v[0],v[1],v[2], v[3],v[4],v[5], v[6],v[7],v[8], v[9],v[10],v[11] ) End Return Null End End   Class Jsonifier Method CreateReference:JsonObject( obj:Object ) Local jobj:=New JsonObject Local id:="@"+(_jsonified.Count()+1) jobj.SetString( "$class",obj.InstanceType.Name ) jobj.SetString( "$id",id ) _jsonified[obj]=id Return jobj End Method Jsonify:JsonValue( value:Variant ) Local type:=value.Type   'handle primitive types Select type Case Typeof<Bool> Return New JsonBool( Cast<Bool>( value ) ) Case Typeof<Int> Return New JsonNumber( Cast<Int>( value ) ) Case Typeof<Float> Return New JsonNumber( Cast<Float>( value ) ) Case Typeof<String> Return New JsonString( Cast<String>( value ) ) End 'handle references Select type.Kind Case "Class" Local obj:=Cast<Object>( value ) If Not obj Return JsonValue.NullValue Local id:=_jsonified[obj] If id Return New JsonString( id ) End 'try custom jsonifiers For Local jext:=Eachin JsonifierExt.All Local jvalue:=jext.Jsonify( value,Self ) If jvalue Return jvalue Next 'automated jsonification of classes Select type.Kind Case "Class" Local obj:=Cast<Object>( value ) Local jobj:=CreateReference( obj ) If obj JsonifyProperties( obj,jobj,obj.InstanceType ) Return jobj End RuntimeError( "TODO: No jsonifier found for type '"+type+"'" ) Return Null End Method Dejsonify:Variant( jvalue:JsonValue,type:TypeInfo ) 'handle primitive types Select type Case Typeof<Bool> Return jvalue.ToBool() Case Typeof<Int> Return Int( jvalue.ToNumber() ) Case Typeof<Float> Return Float( jvalue.ToNumber() ) Case Typeof<String> Return jvalue.ToString() End 'handle references Select type.Kind Case "Class" If jvalue.IsNull Return type.NullValue If jvalue.IsString Return _dejsonified[ jvalue.ToString() ] End 'try custom jsonifiers For Local jext:=Eachin JsonifierExt.All Local value:=jext.Dejsonify( jvalue,type,Self ) If value Return value Next 'automated dejsonification Select type.Kind Case "Class" Local jobj:=Cast<JsonObject>( jvalue ) Local type:=TypeInfo.GetType( jobj.GetString( "$class" ) ) Local id:=jobj.GetString( "$id" ) Local obj:Object If jobj.Contains( "Ctor" ) Local ctor:=Cast<CtorInvokation>( Dejsonify( jobj.GetValue( "Ctor" ),Typeof<CtorInvokation> ) ) obj=Cast<Object>( ctor.Execute() ) Else Local ctor:=type.GetDecl( "New",Typeof<Void()> ) obj=Cast<Object>( ctor.Invoke( Null,Null ) ) Endif _dejsonified[id]=obj DejsonifyProperties( obj,jobj,type ) Return obj End RuntimeError( "TODO: No dejsonifier found for type '"+type+"'" ) Return Null End Method JsonifyArray<C>:JsonArray( values:C[] ) Local jvalues:=New JsonArray( values.Length ) For Local i:=0 Until jvalues.Length jvalues[i]=Jsonify( values[i]) Next Return jvalues End Method DejsonifyArray<C>:C[]( jvalue:JsonValue ) Local jvalues:=jvalue.ToArray() Local values:=New C[jvalues.Length] For Local i:=0 Until values.Length values[i]=Cast<C>( Dejsonify( jvalues[i],Typeof<C> ) ) Next Return values End Private   Field _jsonified:=New Map<Object,String> Field _dejsonified:=New Map<String,Object> Method JsonifyProperties( obj:Object,jobj:JsonObject,type:TypeInfo ) If type.SuperType JsonifyProperties( obj,jobj,type.SuperType ) For Local d:=Eachin type.GetDecls() If d.Kind<>"Property" Continue 'Note: Add DeclInfo.Access property so we can do public fields only? If Not d.Gettable Or Not d.Settable Continue jobj.SetValue( d.Name,Jsonify( d.Get( obj ) ) ) Next End Method DejsonifyProperties( obj:Object,jobj:JsonObject,type:TypeInfo  ) If type.SuperType DejsonifyProperties( obj,jobj,type.SuperType )   For Local d:=Eachin type.GetDecls() If d.Kind<>"Property" Continue 'Note: Add DeclInfo.Access property so we can do public fields only? If Not d.Gettable Or Not d.Settable Continue d.Set( obj,Dejsonify( jobj.GetValue( d.Name ),d.Type ) ) Next End End   Function Main() Local jsonifier:=New Jsonifier Local c:=CreateC( New Vec2i( 100,200 ) ) c.Position=New Vec2i( 10,20 ) c.Lives=10 Local d:=New D c.D1=d c.D2=d d.C=LoadC( "asset::blah" ) d.C.D1=d   Local jobj:=jsonifier.Jsonify( c ) Print jobj.ToJson() Local c2:=Cast<C>( jsonifier.Dejsonify( jobj,Typeof<Object> ) ) Print c2 End

[regularkParticipant]

I was hoping to see this come around sometime, it will be quite useful. Thank you!

[Author]

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