Reference no: EM133423487

Need to implement below visitor class using the below grammar(attached as image) in kotlin , antler

class Visitor: CalcBaseVisitor<Int>() {
val scope = mutableMapOf<String, Int>()
override fun visitProgram(ctx: CalcParser.ProgramContext): Int {
return 0
}
override fun visitAssignStatement(ctx: CalcParser.AssignStatementContext): Int {
return 0
}
override fun visitExprStatement(ctx: CalcParser.ExprStatementContext): Int {
return 0
}
override fun visitAssign(ctx: CalcParser.AssignContext): Int {
return 0
}
override fun visitAdd(ctx: CalcParser.AddContext): Int {
return 0
}
override fun visitMul(ctx: CalcParser.MulContext): Int {
return 0
}
override fun visitParen(ctx: CalcParser.ParenContext): Int {
return 0
}
override fun visitNum(ctx: CalcParser.NumContext): Int {
return 0
}
override fun visitId(ctx: CalcParser.IdContext): Int {
return 0
}
}