public void VisitNode(JSInvocationExpression ie)
{
var type = ie.JSType;
var method = ie.JSMethod;
var thisExpression = ie.ThisReference;
if (method != null) {
if (
(type != null) &&
(type.Type.FullName == "System.Object")
) {
switch (method.Method.Member.Name) {
case "GetType":
JSNode replacement;
var thisType = JSExpression.DeReferenceType(thisExpression.GetExpectedType(TypeSystem), false);
if ((thisType is GenericInstanceType) && thisType.FullName.StartsWith("System.Nullable")) {
replacement = new JSType(thisType);
} else {
replacement = JSIL.GetType(thisExpression);
}
ParentNode.ReplaceChild(ie, replacement);
VisitReplacement(replacement);
return;
}
} else if (
(type != null) &&
(type.Type.FullName.StartsWith("System.Nullable")) &&
(type.Type is GenericInstanceType)
) {
var t = (type.Type as GenericInstanceType).GenericArguments[0];
var @null = JSLiteral.Null(t);
var @default = new JSDefaultValueLiteral(t);
switch (method.Method.Member.Name) {
case ".ctor":
JSExpression value;
if (ie.Arguments.Count == 0) {
value = @null;
} else {
value = ie.Arguments[0];
}
var boe = new JSBinaryOperatorExpression(
JSOperator.Assignment, ie.ThisReference, value, type.Type
);
ParentNode.ReplaceChild(ie, boe);
VisitReplacement(boe);
break;
case "GetValueOrDefault":
var isNull = new JSBinaryOperatorExpression(
JSOperator.Equal, ie.ThisReference, @null, TypeSystem.Boolean
);
JSTernaryOperatorExpression ternary;
if (ie.Arguments.Count == 0) {
ternary = new JSTernaryOperatorExpression(
isNull, @default, ie.ThisReference, type.Type
);
} else {
ternary = new JSTernaryOperatorExpression(
isNull, ie.Arguments[0], ie.ThisReference, type.Type
);
}
ParentNode.ReplaceChild(ie, ternary);
VisitReplacement(ternary);
break;
default:
throw new NotImplementedException(method.Method.Member.FullName);
}
return;
} else if (
(type != null) &&
ILBlockTranslator.TypesAreEqual(TypeSystem.String, type.Type) &&
(method.Method.Name == "Concat")
) {
if (ie.Arguments.Count > 2) {
if (ie.Arguments.All(
(arg) => ILBlockTranslator.TypesAreEqual(
TypeSystem.String, arg.GetExpectedType(TypeSystem)
)
)) {
var boe = JSBinaryOperatorExpression.New(
JSOperator.Add,
ie.Arguments,
TypeSystem.String
);
ParentNode.ReplaceChild(
ie,
boe
);
VisitReplacement(boe);
}
} else if (
ie.Arguments.Count == 2
) {
var lhs = ie.Arguments[0];
var lhsType = ILBlockTranslator.DereferenceType(lhs.GetExpectedType(TypeSystem));
if (!(
ILBlockTranslator.TypesAreEqual(TypeSystem.String, lhsType) ||
ILBlockTranslator.TypesAreEqual(TypeSystem.Char, lhsType)
)) {
lhs = JSInvocationExpression.InvokeMethod(lhsType, JS.toString, lhs, null);
}
var rhs = ie.Arguments[1];
var rhsType = ILBlockTranslator.DereferenceType(rhs.GetExpectedType(TypeSystem));
if (!(
ILBlockTranslator.TypesAreEqual(TypeSystem.String, rhsType) ||
ILBlockTranslator.TypesAreEqual(TypeSystem.Char, rhsType)
)) {
rhs = JSInvocationExpression.InvokeMethod(rhsType, JS.toString, rhs, null);
}
var boe = new JSBinaryOperatorExpression(
JSOperator.Add, lhs, rhs, TypeSystem.String
);
ParentNode.ReplaceChild(
ie, boe
);
VisitReplacement(boe);
} else if (
ILBlockTranslator.GetTypeDefinition(ie.Arguments[0].GetExpectedType(TypeSystem)).FullName == "System.Array"
) {
} else {
var firstArg = ie.Arguments.FirstOrDefault();
ParentNode.ReplaceChild(
ie, firstArg
);
if (firstArg != null)
VisitReplacement(firstArg);
}
return;
} else if (
ILBlockTranslator.IsDelegateType(method.Reference.DeclaringType) &&
(method.Method.Name == "Invoke")
) {
var newIe = new JSDelegateInvocationExpression(
thisExpression, ie.GetExpectedType(TypeSystem), ie.Arguments.ToArray()
);
ParentNode.ReplaceChild(ie, newIe);
VisitReplacement(newIe);
return;
} else if (
(method.Reference.DeclaringType.FullName == "System.Type") &&
(method.Method.Name == "GetTypeFromHandle")
) {
var typeObj = ie.Arguments.FirstOrDefault();
ParentNode.ReplaceChild(ie, typeObj);
VisitReplacement(typeObj);
return;
} else if (
(method.Reference.DeclaringType.Name == "RuntimeHelpers") &&
(method.Method.Name == "InitializeArray")
) {
var array = ie.Arguments[0];
var arrayType = array.GetExpectedType(TypeSystem);
var field = ie.Arguments[1].SelfAndChildrenRecursive.OfType<JSField>().First();
var initializer = JSArrayExpression.UnpackArrayInitializer(arrayType, field.Field.Member.InitialValue);
var copy = JSIL.ShallowCopy(array, initializer, arrayType);
ParentNode.ReplaceChild(ie, copy);
VisitReplacement(copy);
return;
} else if (
method.Method.DeclaringType.Definition.FullName == "System.Array" &&
(ie.Arguments.Count == 1)
) {
switch (method.Method.Name) {
case "GetLength":
case "GetUpperBound": {
var index = ie.Arguments[0] as JSLiteral;
if (index != null) {
var newDot = JSDotExpression.New(thisExpression, new JSStringIdentifier(
String.Format("length{0}", Convert.ToInt32(index.Literal)),
TypeSystem.Int32
));
if (method.Method.Name == "GetUpperBound") {
var newExpr = new JSBinaryOperatorExpression(
JSOperator.Subtract, newDot, JSLiteral.New(1), TypeSystem.Int32
);
ParentNode.ReplaceChild(ie, newExpr);
} else {
ParentNode.ReplaceChild(ie, newDot);
}
}
break;
}
case "GetLowerBound":
ParentNode.ReplaceChild(ie, JSLiteral.New(0));
break;
}
}
}
VisitChildren(ie);
}