public JSExpression MaybeReplaceMethodCall(MethodReference caller, MethodReference method, MethodInfo methodInfo, JSExpression thisExpression, JSExpression[] arguments, TypeReference resultType, bool explicitThis)
{
var typeSystem = method.Module.TypeSystem;
var fullName = method.FullName;
switch (fullName)
{
case "System.Double System.Math::Sqrt(System.Double)":
return(new AbstractSExpression(
"f64.sqrt",
typeSystem.Double,
arguments,
isConstantIfArgumentsAre: true
));
case "System.Double System.Math::Floor(System.Double)":
return(new AbstractSExpression(
"f64.floor",
typeSystem.Double,
arguments,
isConstantIfArgumentsAre: true
));
case "System.Double System.Math::Ceiling(System.Double)":
return(new AbstractSExpression(
"f64.ceil",
typeSystem.Double,
arguments,
isConstantIfArgumentsAre: true
));
case "System.Void Wasm.Test::Printf(System.String,System.Object[])":
// HACK: Ignored for now
return(new JSNullExpression());
case "System.Void Wasm.Test::Invoke(System.String,System.Object[])": {
var literalName = (JSStringLiteral)arguments[0];
var argumentValues = UnpackArgsArray(arguments[1]);
return(new InvokeExport(
literalName.Value, argumentValues
));
}
case "System.Void Wasm.Test::AssertReturn(System.Object,System.String,System.Object[])": {
var expected = arguments[0];
string methodName;
if (!ExtractLiteral(arguments[1], out methodName))
{
throw new Exception("Expected export name as arg1 of assertreturn");
}
var invokeArguments = UnpackArgsArray(arguments[2]);
return(new AssertReturn(expected, methodName, invokeArguments));
}
case "System.Void Wasm.Heap::SetHeapSize(System.Int32)": {
var td = caller.DeclaringType.Resolve();
var hs = WasmUtil.HeapSizes;
if (hs.ContainsKey(td))
{
throw new Exception("Heap size for type " + td.FullName + " already set");
}
long heapSize;
if (!ExtractLiteral(arguments[0], out heapSize))
{
throw new ArgumentException("SetHeapSize's argument must be an int literal");
}
hs.Add(td, (int)heapSize);
return(new JSNullExpression());
}
case "System.Int32 Wasm.HeapI32::get_Item(System.Int32)":
case "System.Int32 Wasm.HeapI32::get_Item(System.Int32,System.Int32)": {
JSExpression actualAddress;
if (arguments.Length == 2)
{
actualAddress = Add(typeSystem, arguments[0], arguments[1]);
}
else
{
actualAddress = arguments[0];
}
// HACK: Indices are in elements, not bytes
var actualAddressBytes = Mul(typeSystem, actualAddress, JSLiteral.New(4));
return(new GetMemory(typeSystem.Int32, false, actualAddressBytes));
}
case "System.Byte Wasm.HeapU8::get_Item(System.Int32)":
case "System.Byte Wasm.HeapU8::get_Item(System.Int32,System.Int32)": {
JSExpression actualAddress;
if (arguments.Length == 2)
{
actualAddress = Add(typeSystem, arguments[0], arguments[1]);
}
else
{
actualAddress = arguments[0];
}
return(new GetMemory(typeSystem.Byte, false, actualAddress));
}
case "System.Void Wasm.HeapI32::set_Item(System.Int32,System.Int32)":
case "System.Void Wasm.HeapI32::set_Item(System.Int32,System.Int32,System.Int32)": {
JSExpression actualAddress;
if (arguments.Length == 3)
{
actualAddress = Add(typeSystem, arguments[0], arguments[1]);
}
else
{
actualAddress = arguments[0];
}
// HACK: Indices are in elements, not bytes
var actualAddressBytes = Mul(typeSystem, actualAddress, JSLiteral.New(4));
return(new SetMemory(typeSystem.Int32, false, actualAddressBytes, arguments[arguments.Length - 1]));
}
case "System.Void Wasm.HeapU8::set_Item(System.Int32,System.Byte)":
case "System.Void Wasm.HeapU8::set_Item(System.Int32,System.Int32,System.Byte)": {
JSExpression actualAddress;
if (arguments.Length == 3)
{
actualAddress = Add(typeSystem, arguments[0], arguments[1]);
}
else
{
actualAddress = arguments[0];
}
return(new SetMemory(typeSystem.Byte, false, actualAddress, arguments[arguments.Length - 1]));
}
case "System.Char System.String::get_Chars(System.Int32)": {
var actualAddress = Add(typeSystem, thisExpression, arguments[0]);
return(new GetMemory(
typeSystem.Byte, false, actualAddress
));
}
case "System.Int32 System.String::get_Length()": {
return(new GetStringLength(thisExpression));
}
case "System.Int32* Wasm.HeapI32::get_Base()":
case "System.Byte* Wasm.HeapU8::get_Base()": {
return(JSLiteral.DefaultValue(method.ReturnType));
}
case "System.Void Wasm.Heap::SetStdout(System.String)": {
// FIXME: Store the filename somewhere
return(new JSNullExpression());
}
case "System.Void Wasm.Heap::Write(System.Int32,System.Int32)": {
return(new StdoutWrite(arguments[0], arguments[1]));
}
}
if (false)
{
Console.WriteLine("// Treating method '{0}' as runtime call", fullName);
}
return(null);
}
