/// <summary>
/// If a call/newobj requires translating to an Expr that is not a call/newobj, then it is done here.
/// </summary>
/// <param name="call"></param>
/// <returns></returns>
public static Expr ResolveCallSite(ICall call)
{
var ctx = call.Ctx;
var mRef = call.CallMethod;
var tRefDecl = mRef.DeclaringType;
var mDef = mRef.Resolve();
// A call to a method in a "JsClass" class - all external methods/properties require translating to JS
var tDefDecl = mDef.DeclaringType;
var jsClassAttr = tDefDecl.GetCustomAttribute <JsClassAttribute>() ?? tDefDecl.GetCustomAttribute <JsAbstractClassAttribute>();
if (jsClassAttr != null)
{
if (mDef.IsExternal())
{
var jsDetail = mDef.GetCustomAttribute <JsDetailAttribute>(true);
var jsDetailName = jsDetail.NullThru(x => (string)x.Properties.FirstOrDefault(y => y.Name == "Name").Argument.Value);
var jsDetailIsDomEventProp = jsDetail.NullThru(x => ((bool?)x.Properties.FirstOrDefault(y => y.Name == "IsDomEvent").Argument.Value) ?? false);
if (mDef.IsGetter || mDef.IsSetter)
{
// Property access
if (jsDetailIsDomEventProp)
{
// Special handling of DOM events
if (!mDef.IsSetter)
{
throw new InvalidOperationException("Only setters supported on DOM events");
}
if (!mDef.Name.StartsWith("set_On"))
{
throw new InvalidOperationException("DOM event name must start with 'On'");
}
if (call.Args.Count() != 1)
{
throw new InvalidOperationException("DOM event setter must have exactly one argument");
}
var eventName = jsDetailName ?? mDef.Name.Substring(6).ToLowerInvariant();
var eventNameExpr = ctx.Literal(eventName);
var safeCallFunction = (Action <object, string, Delegate>)InternalFunctions.SafeAddEventListener;
var safeCall = new ExprCall(ctx, safeCallFunction, null, call.Obj, eventNameExpr, call.Args.First());
return(safeCall);
}
else
{
var propertyName = jsDetailName ?? JsCase(mDef.Name.Substring(4));
if (mDef.Name.Substring(4) == "Item")
{
propertyName = null;
}
else if (mDef.IsStatic)
{
propertyName = JsCase(mDef.DeclaringType.Name) + "." + propertyName;
}
var jsProperty = new ExprJsResolvedProperty(ctx, call, propertyName);
return(jsProperty);
}
}
else if (mDef.IsConstructor && !mDef.IsStatic)
{
// Constructor new object call
var typeName = jsDetailName ?? (string)jsClassAttr.ConstructorArguments[0].Value;
var expr = new ExprJsResolvedCtor(ctx, typeName, tRefDecl, call.Args);
return(expr);
}
else
{
// Normal method call
var methodName = jsDetailName ?? JsCase(mDef.Name);
if (mDef.IsStatic)
{
methodName = JsCase(mDef.DeclaringType.Name) + "." + methodName;
}
var expr = new ExprJsResolvedMethod(ctx, call.Type, call.Obj, methodName, call.Args);
return(expr);
}
}
else
{
return(null);
}
}
var jsRedirectAttr = mDef.GetCustomAttribute <JsRedirectAttribute>(true);
if (jsRedirectAttr != null)
{
if (jsRedirectAttr.ConstructorArguments[0].Value == null)
{
return(FindExprReturn(call, call.CallMethod.DeclaringType));
}
var redirectToTRef = ((TypeReference)jsRedirectAttr.ConstructorArguments[0].Value).FullResolve(mRef);
var redirectToMRef = redirectToTRef.EnumResolvedMethods(mRef).First(x => x.MatchMethodOnly(mRef));
switch (call.ExprType)
{
case Expr.NodeType.NewObj:
return(new ExprNewObj(ctx, redirectToMRef, call.Args));
case Expr.NodeType.Call:
return(new ExprCall(ctx, redirectToMRef, call.Obj, call.Args, call.IsVirtualCall, null, call.Type));
default:
throw new NotImplementedException("Cannot handle: " + call.ExprType);
}
}
var exprRet = FindExprReturn(call);
if (exprRet != null)
{
return(exprRet);
}
return(null);
}
protected override ICode VisitJsResolvedProperty(ExprJsResolvedProperty e)
{
this.code.Append(e.PropertyName);
return(e);
}
