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);
}
public override Value EmitValue(EmitContext context)
{
var module = context.Module;
Value.CowValue instanceValue = null;
using (context.InterruptAssignmentScope())
{
if (!Method.IsStatic && !Method.IsConstructor)
{
instanceValue = GetInstanceValue(context);
// Prevent mutating a value constant if you call a method on the constant for some reason
// todo: fix for use with the cowvalues
// if (instanceValue.IsConstant && instanceValue.UserType.IsValueType &&
// Method.Name != "ToString" && Method.Name != "Equals") // Common non-mutating methods
// {
// Value proxyInstanceValue = context.CreateInternalValue(instanceValue.UserType);
// module.AddCopy(instanceValue, proxyInstanceValue);
// instanceValue = proxyInstanceValue;
// }
}
}
Value[] parameterValues = GetParameterValues(context);
if (instanceValue != null)
{
module.AddPush(instanceValue.Value);
}
Value[] recursiveValues = null;
string methodName = Method.Name;
if (methodName == "SendCustomEvent" ||
methodName == "SendCustomNetworkEvent" ||
methodName == "RunProgram")
{
if (context.IsRecursiveMethodEmit)
{
recursiveValues = context.CollectRecursiveValues();
CheckStackSize(context.GetConstantValue(context.GetTypeSymbol(SpecialType.System_Int32), recursiveValues.Length), context);
PushRecursiveValues(recursiveValues, context);
context.UpdateRecursiveStackMaxSize(recursiveValues.Length);
}
else
{
instanceValue?.Dispose();
}
context.TopTable.DirtyAllValues();
}
foreach (Value value in parameterValues)
{
module.AddPush(value);
}
Value returnValue = null;
if (IsPropertySetter)
{
returnValue = parameterValues.Last();
}
if (Method.ReturnType != null)
{
returnValue = context.GetReturnValue(Method.ReturnType);
if (returnValue.IsConstant)
{
throw new InvalidOperationException("Cannot return to const value");
}
module.AddPush(returnValue);
}
module.AddExtern(externMethodSymbol);
if (recursiveValues != null)
{
PopRecursiveValues(recursiveValues, context);
}
return(returnValue);
}