private GStmt.Stmt classDeclaration()
{
Token name = consume(tt.IDENTIFIER, "Expect class name");
GExpr.Variable superclass = null;
if (Match(tt.LESS))
{
consume(tt.IDENTIFIER, "Expect superclass name");
superclass = new GExpr.Variable(previous());
}
consume(tt.LEFT_BRACE, "Expect '{' before class body");
List <GStmt.Function> methods = new List <GStmt.Function>();
while (!check(tt.RIGHT_BRACE) && !isAtEnd())
{
methods.Add(function("method") as GStmt.Function);
}
consume(tt.RIGHT_BRACE, "Expect '}' after class body.");
return(new GStmt.Class(name, superclass, methods));
}
public Object visit_Variable_Expr(GExpr.Variable expr)
{
return(lookUpVariable(expr.name, expr));
}