public Void Visit_ReturnStmt(ReturnStmt stmt)
{
Object value = null;
if (stmt.value != null)
{
value = Evaluate(stmt.value);
}
throw new Return(value);
}
public Void Visit_ReturnStmt(ReturnStmt stmt)
{
if (_currentFunctionType == FunctionType.None)
{
_errors.Add(new Error(stmt.keyword, ErrorType.InvalidReturnUsage, "Cannot return from top-level code."));
}
if (stmt.value != null)
{
if (_currentFunctionType == FunctionType.Initializer)
{
_errors.Add(new Error(stmt.keyword, ErrorType.InvalidReturnUsage, "Can't use 'return' inside a constructor"));
}
Resolve(stmt.value);
}
return(null);
}
public object VisitReturnStmt(ReturnStmt stmt)
{
if (_currentFuncType == FunctionType.NONE)
{
Lox.Error(stmt.Keyword, "Cannot return from top-level code.");
}
if (stmt.Value != null)
{
if (_currentFuncType == FunctionType.INITIALIZER)
{
Lox.Error(stmt.Keyword, "Cannot return a value from an initializer.");
}
Resolve(stmt.Value);
}
return(null);
}
public object VisitReturnStmt(ReturnStmt stmt)
{
throw new Return(stmt.Value != null
? Evaluate(stmt.Value)
: null);
}
public string Visit_ReturnStmt(ReturnStmt stmt)
{
return(Parenthesize("Return", stmt.value));
}