Hi
I wrote this class which I thought others might find useful so I decided to post it.
The class is designed to be extended off of, and allows the child to serialise itself to JSON or to rebuild it's data content from JSON.
It will not serialise method calls as it is specifically designed for storing data and I've only tested it with String, Integers and Arrays of Integers which is all that I need - although I think it will probably do Arrays of Strings without modification - for anything else you'll need to add support yourself.
Superstrict
Type JSON
Method getJSON$()
Local json$
Local id:TTypeId = TTypeId.ForObject( self )
For Local fld:TField = EachIn id.EnumFields()
Local fieldName$ = Chr( 34 ) + fld.Name() + Chr( 34 ) + ":"
Local elementName$ = fld.TypeId().Name()
If( Right( elementName , 2 ) = "[]" )
json :+ fieldName + "["
Local arrayObject: object= fld.get( Self )
Local arrayId:TTypeId = TTypeId.ForObject( arrayObject )
Local length% = fld.typeId().ArrayLength( fld.get( Self ) , 0 )
For Local i% = 0 To length - 1
Local arrayElement:Object = arrayId.getArrayElement( arrayObject , i )
json :+ arrayElement.toString() + ","
next
json = Left( json , Len( json ) - 1 ) + "],"
else
Select elementName
Case "String"
json :+ fieldName + Chr(34) + fld.getString$( Self ) + Chr(34) + ","
Case "Int"
json :+ fieldName + fld.getInt( Self ) + ","
Default
DebugLog( fld.Name() +" is of unprocessed type " + fld.typeId().Name() )
End Select
endIf
Next
Return "{" + Left( json , Len( json ) - 1 ) + "}"
End Method
Method setJSON( json$ )
json = Left( Right( json , Len( json ) - 1 ) , Len( json ) - 1 ) + ","
Local comma% = Instr( json , "," )
Local square% = Instr( json , "[" )
If square < comma Then comma = Instr( json , "]" , square ) + 1
Local id:TTypeId = TTypeId.ForObject( Self )
While( comma > 0 )
Local this$ = Left( json , comma )
Local colon% = Instr( this , ":" )
Local cmd$ = Mid( this , 2 , colon - 3 )
Local param$ = Mid( this , colon + 1 , Len( this ) - ( colon + 1 ) )
Local paramInt% = 0
Local fld:TField = id.findField( cmd )
If( Left( param, 1 ) = "[" And Right( param, 1 ) = "]" )
'array
Local arrayObject: Object= fld.get( Self )
Local arrayId:TTypeId = TTypeId.ForObject( arrayObject )
Local length% = fld.typeId().ArrayLength( fld.get( Self ) , 0 )
Local paramArray$[1]
Local aparam$ = Mid( param , 2 , Len( param ) - 2 )
For Local i% = 0 To length - 1
Local acomma% = Instr( aparam , "," )
paramArray[0] = Left( aparam , acomma - 1 )
aparam = Right( aparam , Len( aparam ) - acomma )
arrayId.setArrayElement( arrayObject , i , paramArray[0] )
Next
Else
If( Left( param , 1 ) = Chr(34) And Right( param , 1 ) = Chr( 34 ) )
'string
param = Mid( param , 2 , Len( param ) - 2 )
If fld Then fld.setString( Self , param )
Else
paramInt = Int( param )
If fld Then fld.setInt( Self , paramInt )
endIf
EndIf
If Not fld And Len( cmd ) > 1 Then DebugLog( "Could not find field " + cmd )
json = Right( json , Len( json ) - comma )
comma = Instr( json , "," )
square = Instr( json , "[" )
If square < comma Then comma = Instr( json , "]" , square ) + 1
wend
End method
End Type
And here's my test program showing sample usage.
Type TPlayer Extends JSON
Field prefix$
Field name$
Field surname$
Field suffix$
Field race $, class$
Field gender% , level% , face% , hair%
Field strength% , strengthPercentile% , dexterity% , constitution% , inteligence% , wisdom% , charisma%
Field thaco% , ac% , hp% , weaponDice%
Field equipment%[20]
End Type
Local player:TPlayer = New TPlayer
player.prefix = "Miss"
player.name = "Becky"
player.surname = "Rose"
player.suffix = "Programmer"
player.race = "Human"
player.class = "Class"
player.gender = 0
player.level = 20
player.face = 0
player.hair = 0
player.strength = 8
player.dexterity = 12
player.constitution = 12
player.inteligence = 17
player.wisdom = 15
player.charisma = 9
player.thaco = 10
player.ac = 10
player.hp = 69
player.weaponDice = 8
player.equipment[0] = 1
player.equipment[1] = 2
player.equipment[2] = 3
player.equipment[3] = 4
Local test$ = player.getJSON()
DebugLog( test )
player = New TPlayer
player.setJSON( test )
DebugLog( player.getJSON() )
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