public static IWidget GetWidget(string label, IValue value, bool readOnly, Action <IValue> valueChangedHandler)
{
var renderer = new QLWidgetFactory(label, readOnly, valueChangedHandler);
value.Accept(renderer);
return(renderer._result);
}
public bool Unify(IValue lhs, IValue rhs)
{
bool success = lhs.Accept(new ValueUnifier(rhs, this));
if (!success)
{
Release();
}
return(success);
}
/// <summary>
/// プレースホルダに値を適用する
/// </summary>
/// <param name="placeHolders"></param>
/// <remarks></remarks>
public void Place(Dictionary <string, string> placeHolders)
{
if (_placedHolders == null)
{
_placedHolders = new Dictionary <string, INode>();
}
// プレースホルダノード単体の場合はReplacePlaceHoldersで置き換えられない
if (this.IsPlaceHolderOnly)
{
var placeHolderName = ((PlaceHolderExpr)_value).LabelName;
if (placeHolders.ContainsKey(placeHolderName))
{
try {
_value = MiniSqlParserAST.CreateExpr(placeHolders[placeHolderName]);
// 適用したプレースホルダを記録する
if (!_placedHolders.ContainsKey(placeHolderName))
{
_placedHolders.Add(placeHolderName, _value);
}
return;
} catch (SqlSyntaxErrorsException ex) {;
throw new CannotBuildASTException("Type of placeholder value is mismatched", ex); }
}
}
// プレースホルダに値を適用する
var visitor = new ReplacePlaceHolders(placeHolders);
_value.Accept(visitor);
// 適用したプレースホルダを記録する
foreach (var placedHolder in visitor.PlacedHolders)
{
if (!_placedHolders.ContainsKey(placedHolder.Key))
{
_placedHolders.Add(placedHolder.Key, placedHolder.Value);
}
}
}
public bool Visit(IConcreteValue lhsConcreteValue)
{
return(rhsValue.Accept(new LhsConcreteValueUnifier(lhsConcreteValue, boundVariables)));
}
/// <summary>
/// Convenience method.
/// </summary>
public string Print(IValue value)
{
return(value.Accept(this));
}