error: use of undeclared identifier 'self'

[NightProg]

Hello, I have multiple error when compiling the generated parser and lexer.
ANTLR version: 4.13.0
Os: Macos
Command used: antlr -Dlanguage=Cpp -o ${CMAKE_CURRENT_SOURCE_DIR}/src/LythonCompiler/Parser/ANTLR/ ${CMAKE_CURRENT_SOURCE_DIR}/src/LythonCompiler/Parser/ANTLR/Python3Parser.g4
the error:

/Users/./Documents/lython-cpp/src/LythonCompiler/Parser/ANTLR/PythonParser.cpp:19168:11: error: use of undeclared identifier 'self'
    if (!(self.isEqualCurrentTokenText("case"))) throw FailedPredicateException(this, "self.isEqualCurrentTokenText(\"case\")");
          ^
/Users/./Documents/lython-cpp/src/LythonCompiler/Parser/ANTLR/PythonParser.cpp:19224:11: error: use of undeclared identifier 'self'
    if (!(self.isEqualCurrentTokenText("_"))) throw FailedPredicateException(this, "self.isEqualCurrentTokenText(\"_\")");
          ^
/Users/./Documents/lython-cpp/src/LythonCompiler/Parser/ANTLR/PythonParser.cpp:19280:11: error: use of undeclared identifier 'self'
    if (!(self.isEqualCurrentTokenText("type"))) throw FailedPredicateException(this, "self.isEqualCurrentTokenText(\"type\")");
          ^
/Users/./Documents/lython-cpp/src/LythonCompiler/Parser/ANTLR/PythonParser.cpp:19329:20: error: use of undeclared identifier 'self'
    case 1: return self.isnotEqualCurrentTokenText("_");
                   ^
/Users/./Documents/lython-cpp/src/LythonCompiler/Parser/ANTLR/PythonParser.cpp:19419:21: error: use of undeclared identifier 'self'
    case 10: return self.isEqualCurrentTokenText("match");
                    ^
/Users//./Documents/lython-cpp/src/LythonCompiler/Parser/ANTLR/PythonParser.cpp:19429:21: error: use of undeclared identifier 'self'
    case 11: return self.isEqualCurrentTokenText("case");
                    ^
/Users/./Documents/lython-cpp/src/LythonCompiler/Parser/ANTLR/PythonParser.cpp:19439:21: error: use of undeclared identifier 'self'
    case 12: return self.isEqualCurrentTokenText("_");
                    ^
/Users/./Documents/lython-cpp/src/LythonCompiler/Parser/ANTLR/PythonParser.cpp:19449:21: error: use of undeclared identifier 'self'
    case 13: return self.isEqualCurrentTokenText("type");

the grammar file used is located here: https://github.com/antlr/grammars-v4/tree/master/python/python3