NewObjectNode TransformExpression(Expression e, Property contextProp, FileSourceInfo src, Node owner, Reflection.IdentifierScope identifierScope, bool rootLevel = false)
{
if (e is Binding)
{
var binding = e as Binding;
return(TransformExpression(binding.Key, contextProp, src, owner, Reflection.IdentifierScope.Data, rootLevel));
}
if (e is ModeExpression)
{
var mod = (ModeExpression)e;
if (!rootLevel)
{
if (mod.Mode.HasFlag(Modifier.Write))
{
ReportError(owner.Source, "Write-modifiers only allowed on root-level expressions");
}
if (mod.Mode.HasFlag(Modifier.Clear))
{
ReportError(owner.Source, "Clear-modifiers only allowed on root-level expressions");
}
}
return(TransformExpression(mod.Expression, contextProp, src, owner, Reflection.IdentifierScope.Data));
}
if (e is RawExpression)
{
var re = e as RawExpression;
return(TransformExpression(re.Expression, contextProp, src, owner, Reflection.IdentifierScope.Globals));
}
if (e is ThisExpression)
{
e = new Identifier("this");
identifierScope = Reflection.IdentifierScope.Globals;
}
if (e is Identifier)
{
var id = e as Identifier;
if (identifierScope == Reflection.IdentifierScope.Data || identifierScope == Reflection.IdentifierScope.Names)
{
var idd = new NewObjectNode(src, null, FindType("Fuse.Reactive.Data"), InstanceType.Local);
idd.CreateMembers();
owner.AddChild(idd);
_nodes.Add(new object(), idd);
idd.AtomicProperties.First(x => x.Facet.Name == "Key").Value = new String(id.Name, owner.Source);
return(idd);
}
if (identifierScope == Reflection.IdentifierScope.Globals)
{
var literal = new NewObjectNode(src, null, FindType("Fuse.Reactive.Constant"), InstanceType.Local);
owner.AddChild(literal);
literal.CreateMembers();
_nodes.Add(new object(), literal);
var valueProp = literal.BindableProperties.OfType <ReferenceProperty>().First(x => x.Facet.Name == "Value");
ParseTrivialExpression(id.Name, literal, valueProp, contextProp, owner.Source);
return(literal);
}
}
if (e is Literal)
{
var li = e as Literal;
var literal = new NewObjectNode(src, null, FindType("Fuse.Reactive.Constant"), InstanceType.Local);
literal.CreateMembers();
_nodes.Add(new object(), literal);
var v = li is StringLiteral ? new String(li.Value, owner.Source) : ParseArbitraryValue(li.Value, contextProp.Facet.DataType, owner.Source);
var bv = new BoxedValueNode(src, null, FindType("object"), v, InstanceType.Local);
bv.CreateMembers();
owner.AddChild(bv);
literal.BindableProperties.First(x => x.Facet.Name == "Value").Bind(bv);
owner.AddChild(literal);
return(literal);
}
if (e is MemberExpression)
{
var me = e as MemberExpression;
var obj = TransformExpression(me.Object, contextProp, src, owner, identifierScope);
var op = new NewObjectNode(src, null, FindType("Fuse.Reactive.Member"), InstanceType.Local);
op.CreateMembers();
owner.AddChild(op);
_nodes.Add(new object(), op);
op.BindableProperties.First(x => x.Facet.Name == "Object").Bind(obj);
op.AtomicProperties.First(x => x.Facet.Name == "Name").Value = new String(me.Member, owner.Source);
return(op);
}
if (e is NameValuePairExpression)
{
var me = e as NameValuePairExpression;
var nameExp = me.Name;
if (nameExp is Expressions.Identifier)
{
nameExp = new Expressions.StringLiteral(((Expressions.Identifier)nameExp).Name); // Interpret {foo: bar} as {'foo':bar}
}
var name = TransformExpression(nameExp, contextProp, src, owner, Reflection.IdentifierScope.Globals); // Left hand of : is in global context, to allow {foo: bar}
var obj = TransformExpression(me.Value, contextProp, src, owner, identifierScope);
var op = new NewObjectNode(src, null, FindType("Fuse.Reactive.NameValuePair"), InstanceType.Local);
op.CreateMembers();
owner.AddChild(op);
_nodes.Add(new object(), op);
op.BindableProperties.First(x => x.Facet.Name == "Value").Bind(obj);
op.BindableProperties.First(x => x.Facet.Name == "Name").Bind(name);
return(op);
}
if (e is LookUpExpression)
{
var me = e as LookUpExpression;
var collection = TransformExpression(me.Collection, contextProp, src, owner, identifierScope);
var index = TransformExpression(me.Index, contextProp, src, owner, identifierScope);
var op = new NewObjectNode(src, null, FindType("Fuse.Reactive.LookUp"), InstanceType.Local);
op.CreateMembers();
owner.AddChild(op);
_nodes.Add(new object(), op);
op.BindableProperties.First(x => x.Facet.Name == "Collection").Bind(collection);
op.BindableProperties.First(x => x.Facet.Name == "Index").Bind(index);
return(op);
}
if (e is BinaryExpression)
{
var be = e as BinaryExpression;
var op = new NewObjectNode(src, null, FindType("Fuse.Reactive." + be.Name), InstanceType.Local);
op.CreateMembers();
owner.AddChild(op);
_nodes.Add(new object(), op);
ParseAttribute(op, op.BindableProperties.First(x => x.Facet.Name == "Left"), contextProp, be.Left, src, identifierScope);
ParseAttribute(op, op.BindableProperties.First(x => x.Facet.Name == "Right"), contextProp, be.Right, src, identifierScope);
return(op);
}
if (e is ConditionalExpression)
{
var be = e as ConditionalExpression;
var op = new NewObjectNode(src, null, FindType("Fuse.Reactive.Conditional"), InstanceType.Local);
op.CreateMembers();
owner.AddChild(op);
_nodes.Add(new object(), op);
ParseAttribute(op, op.BindableProperties.First(x => x.Facet.Name == "Condition"), contextProp, be.Condition, src, identifierScope);
ParseAttribute(op, op.BindableProperties.First(x => x.Facet.Name == "TrueValue"), contextProp, be.TrueCase, src, identifierScope);
ParseAttribute(op, op.BindableProperties.First(x => x.Facet.Name == "FalseValue"), contextProp, be.FalseCase, src, identifierScope);
return(op);
}
if (e is UnaryExpression)
{
var ue = e as UnaryExpression;
var op = new NewObjectNode(src, null, FindType("Fuse.Reactive." + ue.Name), InstanceType.Local);
op.CreateMembers();
owner.AddChild(op);
_nodes.Add(new object(), op);
ParseAttribute(op, op.BindableProperties.First(x => x.Facet.Name == "Operand"), contextProp, ue.Operand, src, identifierScope);
return(op);
}
if (e is UserDefinedUnaryOperator)
{
var ud = e as UserDefinedUnaryOperator;
var operatorType = Types.FirstOrDefault(x => x.UXUnaryOperatorName == ud.UxUnaryOperatorName);
if (operatorType == null)
{
ReportError(owner.Source, "Could not resolve UX unary operator type: " + ud.UxUnaryOperatorName);
return(null);
}
var op = new NewObjectNode(src, null, operatorType, InstanceType.Local);
op.CreateMembers();
owner.AddChild(op);
_nodes.Add(new object(), op);
// TODO: Remove fuselibs-specific type reference https://github.com/fusetools/uno/issues/1424
if (operatorType.FullName == "Fuse.Reactive.Property")
{
var objProp = op.BindableProperties.First(x => x.Facet.Name == "Object");
var accessorProp = op.BindableProperties.First(x => x.Facet.Name == "Accessor");
var mem = ud.Argument as MemberExpression;
if (mem != null)
{
ParsePropertyAccessor(owner, op, objProp, accessorProp, mem.Object, mem.Member);
}
else
{
var id = ud.Argument as Identifier;
if (id != null)
{
ParsePropertyAccessor(owner, op, objProp, accessorProp, new ThisExpression(), id.Name);
}
else
{
ReportError(owner.Source, "Argument to property-binding must be on the form 'named_object.Property' or 'Property' (to refer to properties on 'this' implicitly)");
return(null);
}
}
}
else
{
ParseAttribute(op, op.Properties.First(x => x.Facet.IsConstructorArgument), contextProp, ud.Argument, src, identifierScope);
}
return(op);
}
if (e is FunctionCallExpression)
{
var fce = (FunctionCallExpression)e;
Reflection.IDataType func;
if (identifierScope == Reflection.IdentifierScope.Names)
{
func = FindType("Fuse.Reactive.NamedFunctionCall");
}
else
{
if (!_uxFunctions.TryGetValue(fce.FuncName, out func))
{
ReportError(owner.Source, "UX function not found: '" + fce.FuncName + "'");
}
}
var fo = new NewObjectNode(src, null, func, InstanceType.Local);
fo.CreateMembers();
owner.AddChild(fo);
_nodes.Add(new object(), fo);
if (identifierScope == Reflection.IdentifierScope.Names)
{
fo.AtomicProperties.First(x => x.Facet.Name == "Name").Value = new String(fce.FuncName, fo.Source);
identifierScope = Reflection.IdentifierScope.Globals;
}
if (func.Implements(VarArgFunction))
{
var args = fo.BindableProperties.First(x => x.Facet.Name == "Arguments");
for (int i = 0; i < fce.Args.Length; i++)
{
var arg = TransformExpression(fce.Args[i], contextProp, src, owner, identifierScope);
args.Bind(arg);
}
}
else
{
var index = 0;
foreach (var dep in fo.Properties.Where(x => x.Facet.IsConstructorArgument))
{
ParseAttribute(fo, dep, contextProp, fce.Args[index++], src, identifierScope);
}
}
return(fo);
}
if (e is VectorExpression)
{
var ve = (VectorExpression)e;
var vectorFunc = FindType("Fuse.Reactive.Vector");
if (ve.Comps.All(x => x is Expressions.NameValuePairExpression))
{
vectorFunc = FindType("Fuse.Reactive.Object");
}
var vo = new NewObjectNode(src, null, vectorFunc, InstanceType.Local);
vo.CreateMembers();
owner.AddChild(vo);
_nodes.Add(new object(), vo);
var args = vo.BindableProperties.First(x => x.Facet.Name == "Arguments");
for (int i = 0; i < ve.Comps.Length; i++)
{
var arg = TransformExpression(ve.Comps[i], contextProp, src, owner, identifierScope);
args.Bind(arg);
}
return(vo);
}
throw new Exception("Unsupported expression type: " + e.GetType());
}
void ParseAttribute(Node owner, Property targetProp, Property contextProp, Expression e, FileSourceInfo src, Reflection.IdentifierScope identifierScope)
{
if (ExpressionType != null && targetProp.Facet.DataType.Implements(ExpressionType))
{
// This supports e.g. <DataBinding Target="foo.Prop" Key="foo" />
((BindableProperty)targetProp).Bind(TransformExpression(e, contextProp, src, owner, identifierScope, true));
}
else if (e.IsTrivial && !(targetProp is ReferenceProperty && (e is StringLiteral) && !(targetProp.Facet.DataType.Implements(FileSourceType))))
{
ParseTrivialExpression(e.ToString().Trim('\"'), owner, targetProp, contextProp, src);
}
else
{
var binding = new NewObjectNode(owner.Source, null, DataBindingType, InstanceType.Local);
_nodes.Add(e, binding);
binding.BindableProperties.First(x => x.Facet.Name == "Target").Bind(owner, targetProp);
_uxProperties.Add(new UXPropertyClass(targetProp, owner));
var argumentProp = binding.BindableProperties.First(x => x.Facet.Name == "Key");
var mode = "Default";
if (e is Binding)
{
var b = (Binding)e;
if (b.Key is ModeExpression)
{
var mod = b.Key as ModeExpression;
e = new Binding(mod.Expression);
mode = mod.Mode.ToString();
}
}
binding.AtomicProperties.First(x => x.Facet.Name == "Mode")
.Value = new EnumValue((Reflection.IEnum)FindType("Fuse.Reactive.BindingMode"), mode, owner.Source);
var exp = TransformExpression(e, contextProp, src, owner, identifierScope, true);
argumentProp.Bind(exp);
TryFindSuitableParent(owner, binding);
}
}