public override BoundNode VisitObjectCreationExpression(ObjectCreationExpressionSyntax node)
{
if (node.Initializer != null)
{
throw new NotSupportedException(LocStr.CE_InitializerListsNotSupported, node);
}
MethodSymbol constructorSymbol = (MethodSymbol)GetSymbol(node);
BoundExpression[] boundArguments = new BoundExpression[node.ArgumentList.Arguments.Count];
bool isConstant = true;
for (int i = 0; i < boundArguments.Length; ++i)
{
boundArguments[i] = VisitExpression(node.ArgumentList.Arguments[i].Expression, constructorSymbol.Parameters[i].Type);
isConstant &= boundArguments[i].IsConstant;
}
// Constant folding on struct creation when possible
// Also implicitly handles parameterless constructors on value types, which Udon does not expose constructors for
if (isConstant && constructorSymbol.IsExtern && constructorSymbol.ContainingType.IsValueType)
{
var constArgs = boundArguments.Select(e => e.ConstantValue.Value).ToArray();
object constantValue = Activator.CreateInstance(constructorSymbol.ContainingType.UdonType.SystemType, constArgs);
IConstantValue constantStore = (IConstantValue)Activator.CreateInstance(typeof(ConstantValue <>).MakeGenericType(constantValue.GetType()), constantValue);
return(new BoundConstantExpression(constantStore, constructorSymbol.ContainingType, node));
}
return(BoundInvocationExpression.CreateBoundInvocation(Context, node, constructorSymbol, null, boundArguments));
}
public override Value EmitSet(EmitContext context, BoundExpression valueExpression)
{
BoundExpression instanceValue = GetInstanceExpression(context);
BoundInvocationExpression invocationExpression = BoundInvocationExpression.CreateBoundInvocation(context, SyntaxNode,
Property.SetMethod,
instanceValue, GetParameters(context, valueExpression));
if (_isBaseCall)
{
invocationExpression.MarkForcedBaseCall();
}
invocationExpression.MarkPropertySetter();
Value resultVal = context.EmitValue(invocationExpression);
if (resultVal == null)
{
throw new NullReferenceException();
}
if (instanceValue != null &&
SourceExpression.ValueType.IsValueType &&
SourceExpression is BoundArrayAccessExpression sourceAccessExpression)
{
context.EmitSet(sourceAccessExpression, instanceValue);
}
return(resultVal);
}
public override BoundNode VisitPrefixUnaryExpression(PrefixUnaryExpressionSyntax node)
{
MethodSymbol unaryMethodSymbol = (MethodSymbol)GetSymbol(node);
BoundExpression expression = VisitExpression(node.Operand, unaryMethodSymbol.Parameters[0].Type);
// + operator is a no-op on builtins so ignore it until we allow user operator overloads
if (node.OperatorToken.Kind() == SyntaxKind.PlusToken)
{
return(expression);
}
BoundExpression constantResult = ConstantExpressionOptimizer.FoldConstantUnaryPrefixExpression(Context, node, unaryMethodSymbol, expression);
if (constantResult != null)
{
return(constantResult);
}
if (node.Kind() == SyntaxKind.PreIncrementExpression ||
node.Kind() == SyntaxKind.PreDecrementExpression)
{
return(new BoundInvocationExpression.BoundPrefixOperatorExpression(Context, node,
(BoundAccessExpression)expression, unaryMethodSymbol));
}
return(BoundInvocationExpression.CreateBoundInvocation(Context, node, unaryMethodSymbol, null, new[] { expression }));
}
public override Value EmitValue(EmitContext context)
{
// We don't want any references outside the flow control to be dirtied conditionally
context.TopTable.DirtyAllValues();
Value returnValue = context.GetReturnValue(ValueType);
context.EmitValueAssignment(returnValue, Lhs);
TypeSymbol systemObjectType = context.GetTypeSymbol(SpecialType.System_Object);
MethodSymbol objectEquality = new ExternSynthesizedOperatorSymbol(BuiltinOperatorType.Equality, systemObjectType, context);
Value conditionCheck = context.EmitValue(BoundInvocationExpression.CreateBoundInvocation(context, null,
objectEquality, null,
new BoundExpression[]
{
BoundAccessExpression.BindAccess(returnValue),
BoundAccessExpression.BindAccess(context.GetConstantValue(systemObjectType, null))
}));
JumpLabel notNullLabel = context.Module.CreateLabel();
context.Module.AddJumpIfFalse(notNullLabel, conditionCheck);
context.EmitValueAssignment(returnValue, Rhs);
context.Module.LabelJump(notNullLabel);
return(returnValue);
}
public override BoundNode VisitAssignmentExpression(AssignmentExpressionSyntax node)
{
BoundAccessExpression assignmentTarget = VisitAccessExpression(node.Left);
if (node.Kind() != SyntaxKind.SimpleAssignmentExpression)
{
MethodSymbol operatorSymbol = (MethodSymbol)GetSymbol(node);
BoundExpression rhsExpression = VisitExpression(node.Right);
// Apparently Roslyn returns string + string for string += char, but returns string + object for string + char /shrug
// Do ToString here if the constant folding can't convert the char
if (assignmentTarget.ValueType == Context.GetTypeSymbol(SpecialType.System_String) &&
rhsExpression.ValueType == Context.GetTypeSymbol(SpecialType.System_Char))
{
if (rhsExpression.IsConstant)
{
rhsExpression = new BoundConstantExpression(rhsExpression.ConstantValue.Value.ToString(), Context.GetTypeSymbol(SpecialType.System_String));
}
else
{
rhsExpression = BoundInvocationExpression.CreateBoundInvocation(Context, node, Context.GetTypeSymbol(SpecialType.System_Char).GetMember <MethodSymbol>("ToString", Context), rhsExpression, Array.Empty <BoundExpression>());
}
}
if (operatorSymbol is ExternBuiltinOperatorSymbol builtinOperatorSymbol)
{
operatorSymbol = new ExternSynthesizedOperatorSymbol(builtinOperatorSymbol.OperatorType,
assignmentTarget.ValueType, Context);
}
return(BoundInvocationExpression.CreateBoundInvocation(Context, node, operatorSymbol, null,
new[] { assignmentTarget, ConvertExpression(node, rhsExpression, operatorSymbol.Parameters[1].Type) }));
}
return(new BoundAssignmentExpression(node, assignmentTarget, VisitExpression(node.Right, assignmentTarget.ValueType)));
}
public override BoundNode VisitBinaryExpression(BinaryExpressionSyntax node)
{
if (node.Kind() == SyntaxKind.LogicalOrExpression ||
node.Kind() == SyntaxKind.LogicalAndExpression)
{
return(HandleShortCircuitOperator(node));
}
if (node.Kind() == SyntaxKind.CoalesceExpression)
{
return(HandleNullCoalescingExpression(node));
}
MethodSymbol binaryMethodSymbol = (MethodSymbol)GetSymbol(node);
BoundExpression lhs = VisitExpression(node.Left, binaryMethodSymbol.Parameters[0].Type);
BoundExpression rhs = VisitExpression(node.Right, binaryMethodSymbol.Parameters[1].Type);
BoundExpression constantResult = ConstantExpressionOptimizer.FoldConstantBinaryExpression(Context, node, binaryMethodSymbol, lhs, rhs);
if (constantResult != null)
{
return(constantResult);
}
return(BoundInvocationExpression.CreateBoundInvocation(Context, node, binaryMethodSymbol, null, new[] { lhs, rhs }));
}
public override Value EmitSet(EmitContext context, BoundExpression valueExpression)
{
if (SourceExpression == null || SourceExpression.IsThis)
{
return(context.EmitValueAssignment(context.GetUserValue(Field), valueExpression));
}
if (Field.HasAttribute <FieldChangeCallbackAttribute>())
{
throw new CompilerException("Cannot set field on U# behaviour by reference when that field has a FieldChangeCallback attribute.");
}
TypeSymbol stringType = context.GetTypeSymbol(SpecialType.System_String);
MethodSymbol setProgramVariableMethod = context.GetTypeSymbol(typeof(UdonSharpBehaviour))
.GetMembers <MethodSymbol>("SetProgramVariable", context)
.First(e => e.Parameters.Length == 2 &&
e.Parameters[0].Type == stringType);
Value value = context.EmitValue(valueExpression);
context.Emit(BoundInvocationExpression.CreateBoundInvocation(context, SyntaxNode,
setProgramVariableMethod, SourceExpression,
new BoundExpression[]
{
BindAccess(context.GetConstantValue(stringType, Field.Name)),
BindAccess(value)
}));
return(value);
}
public BoundPrefixOperatorExpression(AbstractPhaseContext context, SyntaxNode node, BoundAccessExpression assignmentTarget, MethodSymbol operatorMethod)
: base(node, null, null, null)
{
TargetExpression = assignmentTarget;
Type targetType = TargetExpression.ValueType.UdonType.SystemType;
IConstantValue incrementValue = (IConstantValue)Activator.CreateInstance(
typeof(ConstantValue <>).MakeGenericType(targetType), Convert.ChangeType(1, targetType));
InternalExpression = CreateBoundInvocation(context, null, operatorMethod, null,
new BoundExpression[] { assignmentTarget, new BoundConstantExpression(incrementValue, TargetExpression.ValueType, node) });
}
public override Value EmitValue(EmitContext context)
{
BoundInvocationExpression invocationExpression = BoundInvocationExpression.CreateBoundInvocation(context, SyntaxNode,
Property.GetMethod,
GetInstanceExpression(context), GetParameters(context));
if (_isBaseCall)
{
invocationExpression.MarkForcedBaseCall();
}
return(context.EmitValue(invocationExpression));
}
private static bool TryCreateUdonSharpMetadataInvocation(AbstractPhaseContext context, SyntaxNode node,
MethodSymbol symbol, BoundExpression instanceExpression,
out BoundInvocationExpression createdInvocation)
{
if (symbol.Name == "GetUdonTypeID" || symbol.Name == "GetUdonTypeName")
{
if (symbol.IsStatic &&
symbol.TypeArguments.Length == 1 &&
symbol.ContainingType == context.GetTypeSymbol(typeof(UdonSharpBehaviour)))
{
IConstantValue constantValue;
TypeSymbol constantType;
var typeArgs = symbol.TypeArguments.Select(e => context.GetTypeSymbol(e.RoslynSymbol)).ToArray();
if (symbol.Name == "GetUdonTypeID")
{
constantValue = new ConstantValue <long>(UdonSharpInternalUtility.GetTypeID(TypeSymbol.GetFullTypeName(typeArgs[0].RoslynSymbol)));
constantType = context.GetTypeSymbol(SpecialType.System_Int64);
}
else
{
constantValue = new ConstantValue <string>(TypeSymbol.GetFullTypeName(typeArgs[0].RoslynSymbol));
constantType = context.GetTypeSymbol(SpecialType.System_String);
}
createdInvocation = new BoundConstantInvocationExpression(node, constantValue, constantType);
return(true);
}
if (!symbol.IsStatic &&
instanceExpression != null &&
symbol.ContainingType == context.GetTypeSymbol(typeof(UdonSharpBehaviour)))
{
TypeSymbol methodContainer = context.GetTypeSymbol(typeof(UdonSharpBehaviourMethods));
var shimMethod = methodContainer.GetMember <MethodSymbol>(symbol.Name, context);
context.MarkSymbolReferenced(shimMethod);
createdInvocation = CreateBoundInvocation(context, node, shimMethod, null, new [] { instanceExpression });
return(true);
}
}
createdInvocation = null;
return(false);
}
private static bool TryCreateShimInvocation(AbstractPhaseContext context, SyntaxNode node,
MethodSymbol symbol, BoundExpression instanceExpression, BoundExpression[] parameterExpressions,
out BoundInvocationExpression createdInvocation)
{
if (TryCreateUdonSharpMetadataInvocation(context, node, symbol, instanceExpression, out createdInvocation))
{
return(true);
}
if (TryCreateGetComponentInvocation(context, node, symbol, instanceExpression, parameterExpressions, out createdInvocation))
{
return(true);
}
if (TryCreateInstantiationInvocation(context, node, symbol, instanceExpression, parameterExpressions, out createdInvocation))
{
return(true);
}
if (TryCreateSetProgramVariableInvocation(context, node, symbol, instanceExpression, parameterExpressions, out createdInvocation))
{
return(true);
}
if (TryCreateArrayMethodInvocation(context, node, symbol, instanceExpression, parameterExpressions, out createdInvocation))
{
return(true);
}
if (TryCreateTMPMethodInvocation(context, node, symbol, instanceExpression, parameterExpressions, out createdInvocation))
{
return(true);
}
if (TryCreateBaseEnumMethodInvocation(context, node, symbol, instanceExpression, parameterExpressions, out createdInvocation))
{
return(true);
}
if (TryCreateCompareToInvocation(context, node, symbol, instanceExpression, parameterExpressions, out createdInvocation))
{
return(true);
}
return(false);
}
private static bool TryCreateTMPMethodInvocation(AbstractPhaseContext context, SyntaxNode node,
MethodSymbol symbol, BoundExpression instanceExpression, BoundExpression[] parameterExpressions,
out BoundInvocationExpression createdInvocation)
{
if (symbol.ContainingType != null &&
symbol.ContainingType.ToString() == "TMPro.TMP_Text")
{
createdInvocation = new BoundExternInvocation(node, context,
new ExternSynthesizedMethodSymbol(context, symbol.Name, instanceExpression.ValueType, symbol.Parameters.Select(e => e.Type).ToArray(), symbol.ReturnType, symbol.IsStatic),
instanceExpression,
parameterExpressions);
return(true);
}
createdInvocation = null;
return(false);
}
private static bool TryCreateInstantiationInvocation(AbstractPhaseContext context, SyntaxNode node,
MethodSymbol symbol, BoundExpression instanceExpression, BoundExpression[] parameterExpressions,
out BoundInvocationExpression createdInvocation)
{
switch (symbol.Name)
{
case "Instantiate_Extern" when symbol.ContainingType == context.GetTypeSymbol(typeof(InstantiationShim)):
createdInvocation = new BoundExternInvocation(node, context,
new ExternSynthesizedMethodSymbol(context,
"VRCInstantiate.__Instantiate__UnityEngineGameObject__UnityEngineGameObject",
parameterExpressions.Select(e => e.ValueType).ToArray(),
context.GetTypeSymbol(typeof(GameObject)), true),
instanceExpression, parameterExpressions);
return(true);
case "VRCInstantiate" when symbol.ContainingType == context.GetTypeSymbol(typeof(UdonSharpBehaviour)): // Backwards compatibility for UdonSharpBehaviour.VRCInstantiate
case "Instantiate" when symbol.ContainingType == context.GetTypeSymbol(typeof(UnityEngine.Object)):
{
if (symbol.Name != "VRCInstantiate" &&
(symbol.TypeArguments.Length != 1 ||
symbol.TypeArguments[0] != context.GetTypeSymbol(typeof(GameObject))))
{
throw new NotSupportedException("Udon does not support instantiating non-GameObject types");
}
TypeSymbol instantiateShim = context.GetTypeSymbol(typeof(InstantiationShim));
MethodSymbol instantiateMethod = instantiateShim.GetMembers <MethodSymbol>("Instantiate", context)
.First(e => e.Parameters
.Select(p => p.Type)
.SequenceEqual(parameterExpressions
.Select(p => p.ValueType)));
context.MarkSymbolReferenced(instantiateMethod);
createdInvocation = new BoundStaticUserMethodInvocation(node, instantiateMethod, parameterExpressions);
return(true);
}
}
createdInvocation = null;
return(false);
}
/// <summary>
/// Udon exposes a generic SetProgramVariable which the overload finding will attempt to use and fail to find,
/// so just use the non-generic version in this case
/// </summary>
private static bool TryCreateSetProgramVariableInvocation(AbstractPhaseContext context, SyntaxNode node,
MethodSymbol symbol, BoundExpression instanceExpression, BoundExpression[] parameterExpressions,
out BoundInvocationExpression createdInvocation)
{
if (symbol.Name == "SetProgramVariable" &&
symbol.ContainingType == context.GetTypeSymbol(typeof(UdonBehaviour)))
{
MethodSymbol setProgramVarObjMethod = context.GetTypeSymbol(typeof(UdonBehaviour))
.GetMembers <MethodSymbol>("SetProgramVariable", context)
.First(e => !e.RoslynSymbol.IsGenericMethod);
createdInvocation = new BoundExternInvocation(node, context, setProgramVarObjMethod, instanceExpression,
parameterExpressions);
return(true);
}
createdInvocation = null;
return(false);
}
private static bool TryCreateArrayMethodInvocation(AbstractPhaseContext context, SyntaxNode node,
MethodSymbol symbol, BoundExpression instanceExpression, BoundExpression[] parameterExpressions,
out BoundInvocationExpression createdInvocation)
{
if ((symbol.Name == "IndexOf" || symbol.Name == "BinarySearch" || symbol.Name == "LastIndexOf" || symbol.Name == "Reverse") &&
symbol.ContainingType == context.GetTypeSymbol(typeof(Array)))
{
MethodSymbol arrayMethod = context.GetTypeSymbol(typeof(Array))
.GetMembers <MethodSymbol>(symbol.Name, context)
.First(e => !e.RoslynSymbol.IsGenericMethod && e.Parameters.Length == symbol.Parameters.Length);
createdInvocation = new BoundExternInvocation(node, context, arrayMethod, instanceExpression,
parameterExpressions);
return(true);
}
createdInvocation = null;
return(false);
}
private static bool TryCreateBaseEnumMethodInvocation(AbstractPhaseContext context, SyntaxNode node,
MethodSymbol symbol, BoundExpression instanceExpression, BoundExpression[] parameterExpressions,
out BoundInvocationExpression createdInvocation)
{
if ((symbol.Name == "ToString" || symbol.Name == "GetHashCode" || symbol.Name == "Equals") &&
symbol.ContainingType != null &&
symbol.ContainingType == context.GetTypeSymbol(SpecialType.System_Enum))
{
createdInvocation = new BoundExternInvocation(node, context,
context.GetTypeSymbol(SpecialType.System_Object).GetMember <MethodSymbol>(symbol.Name, context),
instanceExpression,
parameterExpressions);
return(true);
}
createdInvocation = null;
return(false);
}
public override Value EmitValue(EmitContext context)
{
if (SourceExpression == null || SourceExpression.IsThis)
{
return(context.GetUserValue(Field));
}
TypeSymbol stringType = context.GetTypeSymbol(SpecialType.System_String);
MethodSymbol setProgramVariableMethod = context.GetTypeSymbol(typeof(UdonSharpBehaviour))
.GetMembers <MethodSymbol>("GetProgramVariable", context)
.First(e => e.Parameters.Length == 1 &&
e.Parameters[0].Type == stringType);
return(context.CastValue(context.EmitValue(BoundInvocationExpression.CreateBoundInvocation(context, SyntaxNode,
setProgramVariableMethod, SourceExpression,
new BoundExpression[]
{
BindAccess(context.GetConstantValue(stringType, Field.Name))
})), Field.Type, true));
}
public override Value EmitValue(EmitContext context)
{
Value returnValue = context.GetReturnValue(ValueType);
var charArray = BoundInvocationExpression.CreateBoundInvocation(context, SyntaxNode, _toCharArraySymbol,
BindAccess(context.EmitValue(SourceExpression)), new[]
{
IndexerExpression,
BindAccess(context.GetConstantValue(context.GetTypeSymbol(SpecialType.System_Int32), 1))
});
context.EmitValueAssignment(returnValue,
BindElementAccess(context, SyntaxNode, charArray,
new BoundExpression[]
{
BindAccess(context.GetConstantValue(context.GetTypeSymbol(SpecialType.System_Int32), 0))
}));
return(returnValue);
}
private static bool TryCreateCompareToInvocation(AbstractPhaseContext context, SyntaxNode node,
MethodSymbol symbol, BoundExpression instanceExpression, BoundExpression[] parameterExpressions,
out BoundInvocationExpression createdInvocation)
{
if (symbol.Name == "CompareTo" &&
symbol.ContainingType != null &&
symbol.ContainingType == context.GetTypeSymbol(typeof(IComparable)))
{
createdInvocation = new BoundExternInvocation(node, context,
new ExternSynthesizedMethodSymbol(context, "CompareTo", instanceExpression.ValueType,
new [] { instanceExpression.ValueType },
context.GetTypeSymbol(SpecialType.System_Int32), false),
instanceExpression, parameterExpressions);
return(true);
}
createdInvocation = null;
return(false);
}
public override Value EmitValue(EmitContext context)
{
BoundInvocationExpression formatInvoke;
if (InterpolationExpressions.Length > 3)
{
BoundConstArrayCreationExpression interpolationArray =
new BoundConstArrayCreationExpression(SyntaxNode, ObjectArr, InterpolationExpressions);
BoundAccessExpression arrayAccess =
BoundAccessExpression.BindAccess(context.EmitValue(interpolationArray));
formatInvoke = BoundInvocationExpression.CreateBoundInvocation(context, SyntaxNode, StringFormatMethod,
null, new BoundExpression[] { BuiltStr, arrayAccess });
}
else
{
formatInvoke = BoundInvocationExpression.CreateBoundInvocation(context, SyntaxNode, StringFormatMethod,
null, new BoundExpression[] { BuiltStr }.Concat(InterpolationExpressions).ToArray());
}
return(context.EmitValue(formatInvoke));
}
public override void Emit(EmitContext context)
{
var blockScope = context.OpenBlockScope();
TypeSymbol intType = context.GetTypeSymbol(SpecialType.System_Int32);
MethodSymbol toCharArrayMethod = context.GetTypeSymbol(SpecialType.System_String).GetMembers <MethodSymbol>("ToCharArray", context).First(e => e.Parameters.Length == 0);
PropertySymbol lengthProperty = context.GetTypeSymbol(SpecialType.System_Array).GetMember <PropertySymbol>("Length", context);
Value iteratorValue = context.EmitValue(BoundInvocationExpression.CreateBoundInvocation(context, SyntaxNode, toCharArrayMethod, IteratorSource, new BoundExpression[] {}));
iteratorValue.MarkUsedRecursively();
var iteratorAccess = BoundAccessExpression.BindAccess(iteratorValue);
Value arraySize = context.CreateInternalValue(intType);
arraySize.MarkUsedRecursively();
BoundAccessExpression getLength = BoundAccessExpression.BindAccess(context, SyntaxNode, lengthProperty, iteratorAccess);
context.EmitValueAssignment(arraySize, getLength);
// Declare and reset incrementor value
Value incrementorValue = context.CreateInternalValue(intType);
incrementorValue.MarkUsedRecursively();
context.EmitValueAssignment(incrementorValue, BoundAccessExpression.BindAccess(context.GetConstantValue(intType, 0)));
JumpLabel loopLabel = context.Module.CreateLabel();
context.Module.LabelJump(loopLabel);
var incrementorAccess = BoundAccessExpression.BindAccess(incrementorValue);
BoundExpression increment = new BoundInvocationExpression.BoundPrefixOperatorExpression(context, SyntaxNode,
incrementorAccess, new ExternSynthesizedOperatorSymbol(BuiltinOperatorType.Addition, intType, context));
var lengthCheck = BoundInvocationExpression.CreateBoundInvocation(context, SyntaxNode,
new ExternSynthesizedOperatorSymbol(BuiltinOperatorType.LessThan, intType, context), null,
new BoundExpression[]
{
incrementorAccess,
BoundAccessExpression.BindAccess(arraySize)
});
JumpLabel exitLoopLabel = context.PushBreakLabel();
JumpLabel continueLabel = context.PushContinueLabel();
Value lengthCheckResult = context.EmitValue(lengthCheck);
context.Module.AddJumpIfFalse(exitLoopLabel, lengthCheckResult);
context.EmitValueAssignment(context.GetUserValue(ValueSymbol),
BoundAccessExpression.BindElementAccess(context, SyntaxNode, iteratorAccess,
new BoundExpression[] { incrementorAccess }));
context.Emit(BodyStatement);
context.Module.LabelJump(continueLabel);
context.Emit(increment);
context.Module.AddJump(loopLabel);
context.Module.LabelJump(exitLoopLabel);
context.PopBreakLabel();
context.PopContinueLabel();
blockScope.Dispose();
}
public override Value EmitValue(EmitContext context)
{
// Make base calls to UdonSharpBehaviour events a noop
if (IsBaseCall)
{
if (Method.ContainingType == context.GetTypeSymbol(typeof(UdonSharpBehaviour)))
{
if (Method.Name == "OnOwnershipRequest")
{
return(context.GetConstantValue(context.GetTypeSymbol(SpecialType.System_Boolean), true));
}
return(null);
}
}
if (SourceExpression == null || SourceExpression.IsThis)
{
return(base.EmitValue(context));
}
// Calls across UdonBehaviours
CompilationContext.MethodExportLayout layout =
context.CompileContext.GetUsbMethodLayout(Method, context);
Value.CowValue instanceCowValue = GetInstanceValue(context);
Value instanceValue = instanceCowValue.Value;
BoundAccessExpression instanceAccess = BoundAccessExpression.BindAccess(instanceValue);
TypeSymbol stringType = context.GetTypeSymbol(SpecialType.System_String);
Value[] recursiveValues = null;
Value stackSizeCheckVal = null;
bool isRecursiveCall = context.IsRecursiveMethodEmit;
if (isRecursiveCall)
{
stackSizeCheckVal = context.CreateGlobalInternalValue(context.GetTypeSymbol(SpecialType.System_Int32));
}
if (Method.Parameters.Length > 0)
{
MethodSymbol setProgramVariableMethod = context.GetTypeSymbol(typeof(UdonSharpBehaviour))
.GetMembers <MethodSymbol>("SetProgramVariable", context)
.First(e => e.Parameters.Length == 2 &&
e.Parameters[0].Type == stringType);
Value[] parameterValues = GetParameterValues(context);
instanceValue = instanceCowValue.Value;
instanceAccess = BoundAccessExpression.BindAccess(instanceValue); // Re-bind here since the parameters may have changed the cowvalue
if (isRecursiveCall)
{
EmitContext.MethodLinkage selfLinkage = context.GetMethodLinkage(context.CurrentEmitMethod, false);
recursiveValues = selfLinkage.ParameterValues;
CheckStackSize(stackSizeCheckVal, context);
PushRecursiveValues(recursiveValues, context);
for (int i = 0; i < parameterValues.Length; ++i)
{
Value paramIntermediate = context.CreateInternalValue(parameterValues[i].UserType);
context.Module.AddCopy(parameterValues[i], paramIntermediate);
parameterValues[i] = paramIntermediate;
}
}
else
{
instanceCowValue.Dispose();
}
context.TopTable.DirtyAllValues();
for (int i = 0; i < Method.Parameters.Length; ++i)
{
context.Emit(CreateBoundInvocation(context, SyntaxNode, setProgramVariableMethod, instanceAccess,
new BoundExpression[]
{
BoundAccessExpression.BindAccess(context.GetConstantValue(stringType, layout.ParameterExportNames[i])),
BoundAccessExpression.BindAccess(parameterValues[i])
}));
}
}
if (isRecursiveCall)
{
if (recursiveValues == null)
{
recursiveValues = Array.Empty <Value>();
}
Value[] scopeValues = context.CollectRecursiveValues();
PushRecursiveValues(scopeValues, context);
recursiveValues = recursiveValues.Concat(scopeValues).ToArray();
stackSizeCheckVal.DefaultValue = recursiveValues.Length;
context.UpdateRecursiveStackMaxSize(recursiveValues.Length);
}
MethodSymbol sendCustomEventMethod = context.GetTypeSymbol(typeof(UdonSharpBehaviour)).GetMember <MethodSymbol>("SendCustomEvent", context);
context.Emit(CreateBoundInvocation(context, SyntaxNode, sendCustomEventMethod, BoundAccessExpression.BindAccess(instanceValue),
new BoundExpression[]
{
BoundAccessExpression.BindAccess(context.GetConstantValue(stringType, layout.ExportMethodName))
}));
if (isRecursiveCall)
{
PopRecursiveValues(recursiveValues, context);
}
if (Method.Parameters.Length > 0 &&
Method.Parameters.Any(e => e.IsOut))
{
if (isRecursiveCall)
{
throw new CompilerException("U# does not yet support calling user methods with ref/out parameters from methods marked with RecursiveMethod");
}
MethodSymbol getProgramVariableMethod = context.GetTypeSymbol(typeof(UdonSharpBehaviour))
.GetMembers <MethodSymbol>("GetProgramVariable", context)
.First(e => e.Parameters.Length == 1 &&
e.Parameters[0].Type == stringType);
// Copy out/ref parameters back
for (int i = 0; i < Method.Parameters.Length; ++i)
{
ParameterSymbol parameterSymbol = Method.Parameters[i];
if (parameterSymbol.IsOut)
{
BoundAccessExpression currentAccessExpression = (BoundAccessExpression)ParameterExpressions[i];
currentAccessExpression.EmitSet(context, CreateBoundInvocation(context, SyntaxNode,
getProgramVariableMethod, instanceAccess, new[]
{
BoundAccessExpression.BindAccess(context.GetConstantValue(stringType,
layout.ParameterExportNames[i]))
}));
}
}
}
if (IsPropertySetter)
{
return(GetParameterValues(context).Last());
}
if (Method.ReturnType != null)
{
MethodSymbol getProgramVariableMethod = context.GetTypeSymbol(typeof(UdonSharpBehaviour))
.GetMembers <MethodSymbol>("GetProgramVariable", context)
.First(e => e.Parameters.Length == 1 &&
e.Parameters[0].Type == stringType);
Value returnVal = context.CreateInternalValue(Method.ReturnType);
BoundInvocationExpression boundGetReturn = CreateBoundInvocation(context, SyntaxNode,
getProgramVariableMethod, instanceAccess,
new BoundExpression[]
{
BoundAccessExpression.BindAccess(context.GetConstantValue(stringType,
layout.ReturnExportName))
});
context.EmitValueAssignment(returnVal, boundGetReturn);
return(returnVal);
}
return(null);
}
private static bool TryCreateGetComponentInvocation(AbstractPhaseContext context, SyntaxNode node,
MethodSymbol symbol, BoundExpression instanceExpression, BoundExpression[] parameterExpressions,
out BoundInvocationExpression createdInvocation)
{
if (symbol.RoslynSymbol != null &&
symbol.RoslynSymbol.IsGenericMethod &&
symbol.TypeArguments.Length == 1 &&
_getComponentNames.Contains(symbol.Name) &&
(symbol.ContainingType.UdonType.SystemType == typeof(Component) || symbol.ContainingType.UdonType.SystemType == typeof(GameObject)))
{
TypeSymbol gameObjectType = context.GetTypeSymbol(typeof(GameObject));
TypeSymbol typeArgument = symbol.TypeArguments[0];
// udon-workaround: Work around the udon bug where it checks the strongbox type instead of variable type and blows up when the strong box is `object`
if (instanceExpression.ValueType == gameObjectType)
{
PropertySymbol accessProperty = gameObjectType.GetMember <PropertySymbol>("transform", context);
instanceExpression = BoundAccessExpression.BindAccess(context, node, accessProperty, instanceExpression);
}
else
{
PropertySymbol accessProperty = context.GetTypeSymbol(typeof(Component)).GetMember <PropertySymbol>("transform", context);
instanceExpression = BoundAccessExpression.BindAccess(context, node, accessProperty, instanceExpression);
}
TypeSymbol udonSharpBehaviourType = context.GetTypeSymbol(typeof(UdonSharpBehaviour));
// Exact UdonSharpBehaviour type match
if (typeArgument == udonSharpBehaviourType)
{
MethodSymbol getComponentMethodShim = context.GetTypeSymbol(typeof(GetComponentShim))
.GetMembers <MethodSymbol>(symbol.Name + "USB", context)
.First(e => e.Parameters.Length == parameterExpressions.Length + 1);
createdInvocation = new BoundStaticUserMethodInvocation(node, getComponentMethodShim,
new [] { instanceExpression }.Concat(parameterExpressions).ToArray());
context.MarkSymbolReferenced(getComponentMethodShim);
return(true);
}
// Subclass of UdonSharpBehaviour
if (typeArgument.IsUdonSharpBehaviour)
{
// Handle inherited types
if (context.CompileContext.HasInheritedUdonSharpBehaviours(typeArgument))
{
MethodSymbol getComponentInheritedMethodShim = context.GetTypeSymbol(typeof(GetComponentShim))
.GetMembers <MethodSymbol>(symbol.Name + "I", context)
.First(e => e.Parameters.Length == parameterExpressions.Length + 1);
getComponentInheritedMethodShim = getComponentInheritedMethodShim.ConstructGenericMethod(context, new [] { typeArgument });
createdInvocation = new BoundStaticUserMethodInvocation(node, getComponentInheritedMethodShim,
new [] { instanceExpression }.Concat(parameterExpressions).ToArray());
context.MarkSymbolReferenced(getComponentInheritedMethodShim);
return(true);
}
MethodSymbol getComponentMethodShim = context.GetTypeSymbol(typeof(GetComponentShim))
.GetMembers <MethodSymbol>(symbol.Name, context)
.First(e => e.Parameters.Length == parameterExpressions.Length + 1);
getComponentMethodShim = getComponentMethodShim.ConstructGenericMethod(context, new [] { typeArgument });
createdInvocation = new BoundStaticUserMethodInvocation(node, getComponentMethodShim,
new [] { instanceExpression }.Concat(parameterExpressions).ToArray());
context.MarkSymbolReferenced(getComponentMethodShim);
return(true);
}
if (_brokenGetComponentTypes.Contains(typeArgument.UdonType.SystemType))
{
MethodSymbol getComponentInheritedMethodShim = context.GetTypeSymbol(typeof(GetComponentShim))
.GetMembers <MethodSymbol>(symbol.Name + "VRC", context)
.First(e => e.Parameters.Length == parameterExpressions.Length + 1);
getComponentInheritedMethodShim = getComponentInheritedMethodShim.ConstructGenericMethod(context, new [] { typeArgument });
createdInvocation = new BoundStaticUserMethodInvocation(node, getComponentInheritedMethodShim,
new [] { instanceExpression }.Concat(parameterExpressions).ToArray());
context.MarkSymbolReferenced(getComponentInheritedMethodShim);
return(true);
}
createdInvocation = new BoundGetUnityEngineComponentInvocation(context, node, symbol,
instanceExpression,
parameterExpressions);
return(true);
}
createdInvocation = null;
return(false);
}
public override BoundNode VisitInvocationExpression(InvocationExpressionSyntax node)
{
MethodSymbol methodSymbol = (MethodSymbol)GetSymbol(node);
// Check if the symbol is null because you can technically have methods named nameof since it is not reserved
if (methodSymbol == null &&
node.Expression is IdentifierNameSyntax nameSyntax &&
nameSyntax.Identifier.Text == "nameof")
{
return(HandleNameOfExpression(node));
}
BoundExpression instanceExpression = null;
if (node.Expression is MemberAccessExpressionSyntax accessExpressionSyntax)
{
instanceExpression = VisitExpression(accessExpressionSyntax.Expression);
}
// Implicit this on member functions for this behaviour
if (instanceExpression == null &&
!methodSymbol.IsStatic &&
methodSymbol.IsExtern)
{
instanceExpression = BoundAccessExpression.BindThisAccess(OwningSymbol.ContainingType);
}
BoundExpression[] boundArguments = new BoundExpression[methodSymbol.Parameters.Length];
var argumentsList = node.ArgumentList.Arguments;
int startIdx = 0;
if (instanceExpression != null && methodSymbol.RoslynSymbol.IsExtensionMethod)
{
boundArguments[0] = instanceExpression;
instanceExpression = null;
startIdx = 1;
}
bool hasParams = false;
int handledArgsCount = startIdx;
ArgumentSyntax paramsNamedArg = null;
for (int i = startIdx; i < boundArguments.Length; ++i)
{
if (methodSymbol.Parameters[i].IsParams)
{
hasParams = true;
paramsNamedArg = argumentsList.FirstOrDefault(x => x.NameColon?.Name.Identifier.ValueText == methodSymbol.Parameters[i].Name);
break;
}
ArgumentSyntax argument;
if (i - startIdx >= argumentsList.Count)
{
argument = null;
}
else if (argumentsList[i - startIdx].NameColon != null)
{
argument = argumentsList.FirstOrDefault(x => x.NameColon?.Name.Identifier.ValueText == methodSymbol.Parameters[i].Name);
}
else
{
argument = argumentsList[i - startIdx];
}
if (argument == null) // Default argument handling
{
boundArguments[i] = new BoundConstantExpression(methodSymbol.Parameters[i].DefaultValue, methodSymbol.Parameters[i].Type, node);
continue;
}
boundArguments[i] = VisitExpression(argument.Expression, methodSymbol.Parameters[i].Type);
handledArgsCount++;
}
if (hasParams)
{
int paramCount;
BoundExpression[] paramExpressions;
if (paramsNamedArg != null)
{
paramCount = 1;
paramExpressions = new BoundExpression[paramCount];
paramExpressions[0] = VisitExpression(paramsNamedArg.Expression);
}
else
{
paramCount = argumentsList.Count - handledArgsCount;
paramExpressions = new BoundExpression[paramCount];
int idx = 0;
for (int i = handledArgsCount; i < argumentsList.Count; ++i)
{
paramExpressions[idx++] = VisitExpression(argumentsList[i].Expression);
}
}
void SetParamsArray()
{
TypeSymbol paramType = methodSymbol.Parameters.Last().Type;
boundArguments[boundArguments.Length - 1] = new BoundConstArrayCreationExpression(node, paramType,
paramExpressions.Select(e => ConvertExpression(node, e, paramType.ElementType)).ToArray());
}
void SetDirectParam()
{
boundArguments[boundArguments.Length - 1] = paramExpressions[0];
}
if (paramCount != 1)
{
SetParamsArray();
}
else if (paramExpressions[0].ValueType == methodSymbol.Parameters.Last().Type)
{
SetDirectParam();
}
else
{
Conversion conversion = Context.CompileContext.RoslynCompilation.ClassifyConversion(paramExpressions[0].ValueType.RoslynSymbol, methodSymbol.Parameters.Last().Type.RoslynSymbol);
if (conversion.IsImplicit) // Covariant array param conversion
{
SetDirectParam();
}
else
{
SetParamsArray();
}
}
}
var invocation = BoundInvocationExpression.CreateBoundInvocation(Context, node, methodSymbol, instanceExpression, boundArguments);
if ((instanceExpression == null || instanceExpression.IsThis) && node.Expression is MemberAccessExpressionSyntax accessExpressionSyntax2 &&
accessExpressionSyntax2.Expression.Kind() == SyntaxKind.BaseExpression)
{
invocation.MarkForcedBaseCall();
}
return(invocation);
}