public JsExpression GetMember(IMember member, IRuntimeContext context)
{
var owner = member is IMethod && ((IMethod)member).IsAccessor ? ((IMethod)member).AccessorOwner : null;
int index = FindIndexInReflectableMembers(owner ?? member);
if (index >= 0)
{
JsExpression result = JsExpression.Index(
JsExpression.Member(
JsExpression.Member(
TypeOf(member.DeclaringType, context),
"__metadata"),
"members"),
JsExpression.Number(index));
if (owner != null)
{
if (owner is IProperty)
{
if (ReferenceEquals(member, ((IProperty)owner).Getter))
{
result = JsExpression.MemberAccess(result, "getter");
}
else if (ReferenceEquals(member, ((IProperty)owner).Setter))
{
result = JsExpression.MemberAccess(result, "setter");
}
else
{
throw new ArgumentException("Invalid member " + member);
}
}
else if (owner is IEvent)
{
if (ReferenceEquals(member, ((IEvent)owner).AddAccessor))
{
result = JsExpression.MemberAccess(result, "adder");
}
else if (ReferenceEquals(member, ((IEvent)owner).RemoveAccessor))
{
result = JsExpression.MemberAccess(result, "remover");
}
else
{
throw new ArgumentException("Invalid member " + member);
}
}
else
{
throw new ArgumentException("Invalid owner " + owner);
}
}
return(result);
}
else
{
return(MetadataUtils.ConstructMemberInfo(member, _compilation, _metadataImporter, _namer, this, _errorReporter, t => TypeOf(t, context), includeDeclaringType: true));
}
}
public void ExpressionStatementIsParenthesizedWhenItStartsWithAnObjectLiteral()
{
AssertCorrect((JsStatement)JsExpression.ObjectLiteral(new JsObjectLiteralProperty("a", JsExpression.Number(0))), "({ a: 0 });\n");
AssertCorrect((JsStatement)JsExpression.Invocation(JsExpression.ObjectLiteral(new JsObjectLiteralProperty("a", JsExpression.Number(0)))), "({ a: 0 }());\n");
AssertCorrect((JsStatement)JsExpression.Member(JsExpression.ObjectLiteral(new JsObjectLiteralProperty("a", JsExpression.Number(0))), "a"), "({ a: 0 }.a);\n");
AssertCorrect((JsStatement)JsExpression.Comma(JsExpression.ObjectLiteral(new JsObjectLiteralProperty("a", JsExpression.Number(0))), JsExpression.Null), "({ a: 0 }, null);\n");
AssertCorrect((JsStatement)JsExpression.Conditional(JsExpression.ObjectLiteral(new JsObjectLiteralProperty("a", JsExpression.Number(0))), JsExpression.Number(0), JsExpression.Number(1)), "({ a: 0 } ? 0 : 1);\n");
AssertCorrect((JsStatement)JsExpression.PrefixPlusPlus(JsExpression.ObjectLiteral(new JsObjectLiteralProperty("a", JsExpression.Number(0)))), "++{ a: 0 };\n");
AssertCorrect((JsStatement)JsExpression.PostfixPlusPlus(JsExpression.ObjectLiteral(new JsObjectLiteralProperty("a", JsExpression.Number(0)))), "({ a: 0 }++);\n");
AssertCorrect((JsStatement)JsExpression.PostfixMinusMinus(JsExpression.ObjectLiteral(new JsObjectLiteralProperty("a", JsExpression.Number(0)))), "({ a: 0 }--);\n");
AssertCorrect((JsStatement)JsExpression.Index(JsExpression.ObjectLiteral(new JsObjectLiteralProperty("a", JsExpression.Number(0))), JsExpression.Number(0)), "({ a: 0 }[0]);\n");
AssertCorrect((JsStatement)JsExpression.Member(JsExpression.Invocation(JsExpression.Member(JsExpression.ObjectLiteral(new JsObjectLiteralProperty("a", JsExpression.Number(0))), "a")), "b"), "({ a: 0 }.a().b);\n");
}
public void IndexingDoesNotCauseUnnecessaryParentheses()
{
AssertCorrect(JsExpression.Member(
JsExpression.Index(
JsExpression.Member(
JsExpression.Index(
JsExpression.Identifier("a"),
JsExpression.Identifier("b")
),
"c"
),
JsExpression.Identifier("d")
),
"e"
), "a[b].c[d].e");
}
public JsInvocationExpression CreateMulticastDelegate(JsExpression target, JsExpression invocationList)
{
var delegateBody = new JsBlockStatement();
var list = Js.Variable("$invocationList", invocationList);
var i = Js.Variable("$i", Js.Primitive(0));
delegateBody.Add(
Js.For(
i,
i.GetReference().LessThan(list.GetReference().Member("length")),
i.GetReference().Increment()
)
.Body(list.GetReference().Index(i.GetReference()).Member("apply").Invoke(Js.Null(), Js.Reference("arguments")).Express()));
var delegateExpression = Js.Function();
delegateExpression.Body(delegateBody);
var delegateVariable = Js.Variable("$delegate$", delegateExpression);
var delegateType = invocationList.Index(Js.Primitive(0)).Member(SpecialNames.TypeField);
var wrapper = new JsBlockStatement();
wrapper.Local(list);
wrapper.Local(delegateVariable);
wrapper.Assign(delegateVariable.GetReference().Member("prototype"), Js.New(Type(Context.Instance.MulticastDelegateType)));
wrapper.Invoke(Type(Context.Instance.ObjectType).Member(SpecialNames.TypeInitializer), delegateVariable.GetReference(), delegateVariable.GetReference());
wrapper.Invoke(Type(Context.Instance.DelegateType).Member(SpecialNames.TypeInitializer), delegateVariable.GetReference(), delegateVariable.GetReference());
wrapper.Invoke(Type(Context.Instance.MulticastDelegateType).Member(SpecialNames.TypeInitializer), delegateVariable.GetReference(), delegateVariable.GetReference());
wrapper.Invoke(delegateType.Member(SpecialNames.TypeInitializer), delegateVariable.GetReference(), delegateVariable.GetReference());
wrapper.Express(InvokeMethodAs(
Context.Instance.MulticastDelegateConstructor,
delegateVariable.GetReference(),
target,
list.GetReference()));
wrapper.Assign(delegateVariable.GetReference().Member(SpecialNames.TypeField), delegateType);
wrapper.Return(delegateVariable.GetReference());
return Wrap(wrapper);
}