Model:
   {Model}
   '[' tables += Table? (',' tables += Table)* ']'
;

Table:
   ClassTable | ClassReferencesTable
;

ClassTable:
   {ClassTable}
   '{'
      '"Name"' ':' '"Class"' ','
      '"Table"' ':' '['
           class += Class? (',' class += Class)*
      ']'
   '}'
;

Class:
   '{'
      '"Name"' ':' '{'
         '"column"' ':' nameColumn = INT ','
         '"row"' ':' nameRow = INT ','
         '"value"' ':' name = STRING
      '}' (',')? 
      '"References"' ':' '['
         ((references += ClassReferences (',' references += ClassReferences)*) | (references += ClassReferencesReference (',' references += ClassReferencesReference)*))
      ']'
   '}'
;

ClassReferencesTable:
   {ClassReferencesTable}
   '{'
      '"Name"' ':' '"ClassReferences"' ','
      '"Table"' ':' '['
           references += ClassReferences? (',' references += ClassReferences)*
      ']'
   '}'
;

ClassReferencesReference:
   '{'
      '"Name"' ':' '{'
         '"column"' ':' column = INT ','
         '"row"' ':' row = INT ','
         '"value"' ':' name = [ClassReferences|STRING]
      '}'
   '}'
;

ClassReferences:
   '{'
      '"Type"' ':' '{'
         '"column"' ':' typeColumn = INT ','
         '"row"' ':' typeRow = INT ','
         '"value"' ':' '"' typeValue = RefType '"' 
      '}' (',')? 
      '"To"' ':' '{'
         '"column"' ':' toColumn = INT ','
         '"row"' ':' toRow = INT ','
         '"value"' ':' toValue = [Class|STRING]
      '}'
   '}'
;

RefType: 'Aggregate' | 'Composite' | 'Association';

terminal NULL: 'null';

terminal ID: '^'?('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|'_'|'0'..'9')*;

terminal STRING: '"OKZVVTSPKHOVYSMU' -> 'SQPSUQMWUPQSBXDT"';

terminal INT returns ecore::EInt: ('0'..'9')+;

terminal FLOAT: '-'? INT? '.' INT (('E'|'e') '-'? INT)?;

terminal BOOLEAN: 'true' | 'false';

terminal ML_COMMENT: '/*' -> '*/';

terminal SL_COMMENT: '//' !('\n'|'\r')* ('\r'? '\n')?;

terminal WS: (' '|'\t'|'\r'|'\n')+;

terminal ANY_OTHER: .;

[
  {
    "Name": "Class",
    "Table": [
      {
        "Name": {
          "column": 0,
          "row": 4,
          "value": "OKZVVTSPKHOVYSMUSchoolSQPSUQMWUPQSBXDT"
        },
        "References": [
          {
            "Type": {
              "column": 1,
              "row": 4,
              "value": "Composite" 
            },
            "To": {
              "column": 2,
              "row": 4,
              "value": "OKZVVTSPKHOVYSMUClassRoomSQPSUQMWUPQSBXDT"
            }
          }
        ]
      },
      {
        "Name": {
          "column": 0,
          "row": 5,
          "value": "OKZVVTSPKHOVYSMUClassRoomSQPSUQMWUPQSBXDT"
        },
        "References": [
          {
            "Type": {
              "column": 1,
              "row": 5,
              "value": "Aggregate"
            },
            "To": {
              "column": 2,
              "row": 5,
              "value": "OKZVVTSPKHOVYSMUSchoolSQPSUQMWUPQSBXDT"
            }
          }
        ] 
      }
    ]
  }
]

			parserGenerator =CustomXtextAntlrGeneratorFragment2 {
				options= {
					backtrackLexer=true
				}
			}

class CustomXtextAntlrGeneratorFragment2 extends XtextAntlrGeneratorFragment2 {
		protected def compileLexerOptions(Grammar it, AntlrOptions options) '''
		«IF options.backtrackLexer»

			options {
				backtrack=true;
				memoize=true;
				greedy=false;
			}
		«ENDIF»
	'''
}