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1263 lines (942 loc) · 38 KB
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"use strict";
if (typeof (JSIL) === "undefined")
throw new Error("JSIL.Core is required");
if (!$jsilcore)
throw new Error("JSIL.Core is required");
JSIL.DeclareNamespace("JSIL.PInvoke");
// Used to access shared heap
var warnedAboutMultiModule = false;
JSIL.PInvoke.CurrentCallContext = null;
JSIL.PInvoke.GetGlobalModule = function () {
var module = JSIL.GlobalNamespace.Module || JSIL.__NativeModules__["__global__"];
if (!module)
JSIL.RuntimeError("No emscripten modules loaded");
if (Object.keys(JSIL.__NativeModules__).length > 2) {
if (!warnedAboutMultiModule) {
warnedAboutMultiModule = true;
JSIL.Host.warning("More than one Emscripten module is loaded, so operations that need a global heap will fail. This is due to a limitation of Emscripten.");
}
}
return module;
};
// Used in operations like AllocHGlobal to try and ensure we pick the best possible
// heap during marshaling operations (when we have a good guess) instead of just choking
JSIL.PInvoke.GetDefaultModule = function () {
if (JSIL.PInvoke.CurrentCallContext)
return JSIL.PInvoke.CurrentCallContext.module;
else
return JSIL.PInvoke.GetGlobalModule();
};
// Used to access specific entry points
JSIL.PInvoke.GetModule = function (name, throwOnFail) {
var modules = JSIL.__NativeModules__;
// HACK
var key = name.toLowerCase().replace(".so", ".dll");
var module = modules[key];
if (!module && (throwOnFail !== false))
JSIL.RuntimeError("No module named '" + name + "' loaded.");
return module;
};
// Locates the emscripten module that owns a given heap
JSIL.PInvoke.GetModuleForHeap = function (heap, throwOnFail) {
var buffer;
if (!heap)
JSIL.RuntimeError("No heap provided");
else if (heap && heap.buffer)
buffer = heap.buffer;
else
buffer = heap;
var nm = JSIL.__NativeModules__;
for (var k in nm) {
if (!nm.hasOwnProperty(k))
continue;
var m = nm[k];
var mBuffer = m.HEAPU8.buffer;
if (mBuffer === buffer)
return m;
}
if (throwOnFail !== false)
JSIL.RuntimeError("No module owns the specified heap");
return null;
};
JSIL.PInvoke.PickModuleForPointer = function (pointer, enableFallback) {
var result = null;
if (pointer.pointer && pointer.pointer.memoryRange) {
result = JSIL.PInvoke.GetModuleForHeap(pointer.pointer.memoryRange.buffer, !enableFallback);
}
if (result === null) {
if (enableFallback) {
result = JSIL.PInvoke.GetDefaultModule();
} else {
JSIL.RuntimeError("No appropriate module available");
}
}
return result;
};
JSIL.PInvoke.CreateBytePointerForModule = function (module, address) {
var memoryRange = JSIL.GetMemoryRangeForBuffer(module.HEAPU8.buffer);
var emscriptenMemoryView = memoryRange.getView(System.Byte.__Type__);
var emscriptenPointer = new JSIL.BytePointer(System.Byte.__Type__, memoryRange, emscriptenMemoryView, address);
return emscriptenPointer;
};
JSIL.PInvoke.CreateIntPtrForModule = function (module, address) {
var emscriptenPointer = JSIL.PInvoke.CreateBytePointerForModule(module, address);
var intPtr = JSIL.CreateInstanceOfType(
System.IntPtr.__Type__,
"$fromPointer",
[emscriptenPointer]
);
return intPtr;
};
JSIL.PInvoke.DestroyFunctionPointer = function (fp) {
var nm = JSIL.__NativeModules__;
for (var k in nm) {
if (!nm.hasOwnProperty(k))
continue;
if (k === "__global__")
continue;
var module = nm[k];
module.Runtime.removeFunction(fp);
}
return result;
};
JSIL.MakeClass("System.Object", "JSIL.Runtime.NativePackedArray`1", true, ["T"], function ($) {
var T = new JSIL.GenericParameter("T", "JSIL.Runtime.NativePackedArray`1");
var TArray = System.Array.Of(T);
$.Field({Public: false, Static: false, ReadOnly: true}, "_Array", TArray);
$.Field({Public: true , Static: false, ReadOnly: true}, "Length", $.Int32);
$.Field({Public: false, Static: false}, "IsNotDisposed", $.Boolean);
$.RawMethod(false, "$innerCtor", function innerCtor (module, size) {
this.Length = size;
this.IsNotDisposed = true;
this.ElementSize = JSIL.GetNativeSizeOf(this.T, false);
var sizeBytes = this.ElementSize * this.Length;
// HACK because emscripten malloc is finicky
if (sizeBytes < 4)
sizeBytes = 4;
this.Module = module;
this.EmscriptenOffset = module._malloc(sizeBytes);
var tByte = $jsilcore.System.Byte.__Type__;
this.MemoryRange = new JSIL.MemoryRange(module.HEAPU8.buffer, this.EmscriptenOffset, sizeBytes);
if (this.T.__IsNativeType__) {
this._Array = this.MemoryRange.getView(this.T);
} else {
var buffer = this.MemoryRange.getView(tByte);
var arrayType = JSIL.PackedStructArray.Of(this.T);
this._Array = new arrayType(buffer, this.MemoryRange);
}
});
$.Method({Static: false, Public: true }, ".ctor",
new JSIL.MethodSignature(null, [$.Int32], []),
function NativePackedArray_ctor (size) {
this.$innerCtor(JSIL.PInvoke.GetDefaultModule(), size);
}
);
$.Method({Static: false, Public: true }, ".ctor",
new JSIL.MethodSignature(null, [$.String, $.Int32], []),
function NativePackedArray_ctor (dllName, size) {
this.$innerCtor(JSIL.PInvoke.GetModule(dllName), size);
}
);
$.Method({Static: true, Public: true }, "op_Implicit",
new JSIL.MethodSignature(TArray, [T], []),
function (self) {
return self._Array;
}
);
$.Method(
{Public: true , Static: false}, "get_Array",
new JSIL.MethodSignature(TArray, [], []),
function get_Array () {
return this._Array;
}
);
$.Method({Static:false, Public:true }, "AllocHandle",
new JSIL.MethodSignature($jsilcore.TypeRef("System.Runtime.InteropServices.GCHandle"), [], []),
function AllocHandle () {
return System.Runtime.InteropServices.GCHandle.Alloc(this._Array);
}
);
$.Method({Static:false, Public:true }, "AllocHandle",
new JSIL.MethodSignature($jsilcore.TypeRef("System.Runtime.InteropServices.GCHandle"), [$jsilcore.TypeRef("System.Runtime.InteropServices.GCHandleType")], []),
function AllocHandle (type) {
// FIXME: type
return System.Runtime.InteropServices.GCHandle.Alloc(
this._Array, type
);
}
);
$.Method(
{Public: true , Static: false}, "Dispose",
JSIL.MethodSignature.Void,
function Dispose () {
if (!this.IsNotDisposed)
// FIXME: Throw
return;
this.IsNotDisposed = false;
this.Module._free(this.EmscriptenOffset);
}
);
$.Property({}, "Array");
$.ImplementInterfaces(
/* 0 */ System.IDisposable
);
});
JSIL.PInvoke.CallContext = function (module) {
// HACK: Save and restore the current call context value.
// This is important so operations like AllocHGlobal can choose the right module.
this.prior = JSIL.PInvoke.CurrentCallContext;
JSIL.PInvoke.CurrentCallContext = this;
this.module = module;
this.allocations = [];
this.cleanups = [];
};
JSIL.PInvoke.CallContext.prototype.Allocate = function (sizeBytes) {
// HACK
var padding = 64;
var offset = this.module._malloc(sizeBytes + padding);
this.allocations.push(offset);
return offset;
};
JSIL.PInvoke.CallContext.prototype.Dispose = function () {
JSIL.PInvoke.CurrentCallContext = this.prior;
if (this.cleanups)
for (var i = 0, l = this.cleanups.length; i < l; i++) {
var c = this.cleanups[i];
c();
}
if (this.allocations)
for (var i = 0, l = this.allocations.length; i < l; i++) {
var a = this.allocations[i];
this.module._free(a);
}
this.cleanups = null;
this.allocations = null;
};
// FIXME: Kill this
JSIL.PInvoke.CallContext.prototype.QueueCleanup = function (callback) {
this.cleanups.push(callback);
}
// JavaScript is garbage
JSIL.PInvoke.SetupMarshallerPrototype = function (t) {
t.prototype = Object.create(JSIL.PInvoke.BaseMarshallerPrototype);
t.prototype.constructor = t;
};
JSIL.PInvoke.BaseMarshallerPrototype = Object.create(Object.prototype);
JSIL.PInvoke.BaseMarshallerPrototype.GetSignatureToken = function (type) {
JSIL.RuntimeError("Marshaller of type '" + this.constructor.name + "' has no signature token implementation");
};
JSIL.PInvoke.ByValueMarshaller = function ByValueMarshaller (type) {
this.type = type;
if (type.__IsEnum__)
JSIL.RuntimeError("ByValueMarshaller must not be used for enums");
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.ByValueMarshaller);
JSIL.PInvoke.ByValueMarshaller.prototype.GetSignatureToken = function () {
var storageType = this.type.__IsEnum__ ? this.type.__StorageType__ : this.type;
switch (storageType.__FullName__) {
case "System.Int32":
case "System.UInt32":
case "System.Boolean":
return "i";
case "System.Single":
case "System.Double":
return "d";
}
JSIL.RuntimeError("No signature token for type '" + this.type.__FullName__ + "'");
};
JSIL.PInvoke.ByValueMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
return managedValue;
};
JSIL.PInvoke.ByValueMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
return nativeValue;
};
JSIL.PInvoke.EnumMarshaller = function EnumMarshaller (type) {
this.type = type;
if (!type.__IsEnum__)
JSIL.RuntimeError("Expected enum");
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.EnumMarshaller);
JSIL.PInvoke.EnumMarshaller.prototype.GetSignatureToken = function () {
// FIXME: Does the emscripten ABI do anything special here?
return "i";
/*
var storageType = this.type.__StorageType__;
switch (storageType.__FullName__) {
case "System.Int32":
case "System.UInt32":
case "System.Boolean":
return "i";
}
JSIL.RuntimeError("No signature token for type '" + this.type.__FullName__ + "'");
*/
};
JSIL.PInvoke.EnumMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
if (typeof (managedValue) !== "object")
JSIL.RuntimeError("Expected a managed enum instance");
return managedValue.value;
};
JSIL.PInvoke.EnumMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
return this.type.$Cast(nativeValue);
};
JSIL.PInvoke.BoxedValueMarshaller = function BoxedValueMarshaller (type) {
this.type = type;
this.sizeInBytes = JSIL.GetNativeSizeOf(type, false);
this.namedReturnValue = true;
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.BoxedValueMarshaller);
JSIL.PInvoke.BoxedValueMarshaller.prototype.AllocateZero = function (callContext) {
return callContext.Allocate(this.sizeInBytes);
};
JSIL.PInvoke.BoxedValueMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
var module = callContext.module;
var offset = callContext.Allocate(this.sizeInBytes);
var memoryRange = JSIL.GetMemoryRangeForBuffer(module.HEAPU8.buffer);
var emscriptenMemoryView = memoryRange.getView(this.type);
var emscriptenPointer = JSIL.NewPointer(
this.type, memoryRange, emscriptenMemoryView, offset
);
emscriptenPointer.set(managedValue);
return offset;
};
JSIL.PInvoke.BoxedValueMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
var module = callContext.module;
var memoryRange = JSIL.GetMemoryRangeForBuffer(module.HEAPU8.buffer);
var emscriptenMemoryView = memoryRange.getView(this.type);
var emscriptenPointer = JSIL.NewPointer(
this.type, memoryRange, emscriptenMemoryView, nativeValue
);
return emscriptenPointer.get();
};
JSIL.PInvoke.ByValueStructMarshaller = function ByValueStructMarshaller (type) {
this.type = type;
this.sizeInBytes = JSIL.GetNativeSizeOf(type, true);
this.marshaller = JSIL.$GetStructMarshaller(type);
this.unmarshalConstructor = JSIL.$GetStructUnmarshalConstructor(type);
// clang/emscripten optimization for single-member structs as return values
if (JSIL.GetFieldList(type).length === 1) {
this.unpackedReturnValue = true;
this.namedReturnValue = false;
} else {
this.unpackedReturnValue = false;
this.namedReturnValue = true;
}
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.ByValueStructMarshaller);
JSIL.PInvoke.ByValueStructMarshaller.prototype.GetSignatureToken = function () {
return "i";
};
JSIL.PInvoke.ByValueStructMarshaller.prototype.AllocateZero = function (callContext) {
return callContext.Allocate(this.sizeInBytes);
};
JSIL.PInvoke.ByValueStructMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
var module = callContext.module;
var offset = callContext.Allocate(this.sizeInBytes);
this.marshaller(managedValue, module.HEAPU8, offset);
return offset;
};
JSIL.PInvoke.ByValueStructMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
var module = callContext.module;
if (this.unpackedReturnValue) {
// FIXME: Is this always an int32?
var scratchBytes = $jsilcore.BytesFromInt32(nativeValue);
return new (this.unmarshalConstructor)(scratchBytes, 0);
} else {
return new (this.unmarshalConstructor)(module.HEAPU8, nativeValue);
}
};
JSIL.PInvoke.IntPtrMarshaller = function IntPtrMarshaller () {
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.IntPtrMarshaller);
JSIL.PInvoke.IntPtrMarshaller.prototype.GetSignatureToken = function () {
return "i";
};
JSIL.PInvoke.IntPtrMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
if (managedValue.pointer) {
if (managedValue.pointer.__IsNull__)
return 0;
var sourceBuffer = managedValue.pointer.memoryRange.buffer;
var destBuffer = callContext.module.HEAPU8.buffer;
if (destBuffer === sourceBuffer) {
// Pointer is in the correct heap, so marshal as-is.
return managedValue.pointer.offsetInBytes | 0;
} else {
// HACK: Use the length of the underlying memory range the pointer
// is aimed at as the length of the region being marshalled.
// Best we can do. Will be correct for trivial cases (pinned an array)
return JSIL.PInvoke.ArrayMarshaller.CreateTemporaryNativeCopy(
managedValue.pointer, managedValue.pointer.memoryRange.length, callContext,
// HACK: no way to infer isOut reliably here
true
);
}
} else {
// HACK: We have no way to know this address is in the correct heap.
return managedValue.value | 0;
}
};
JSIL.PInvoke.IntPtrMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
return JSIL.PInvoke.CreateIntPtrForModule(callContext.module, nativeValue);
};
JSIL.PInvoke.PointerMarshaller = function PointerMarshaller (type) {
this.type = type;
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.PointerMarshaller);
JSIL.PInvoke.PointerMarshaller.prototype.GetSignatureToken = function () {
return "i";
};
JSIL.PInvoke.PointerMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
var module = callContext.module;
if (managedValue.__IsNull__)
return 0;
if (managedValue.memoryRange.buffer !== module.HEAPU8.buffer)
JSIL.RuntimeError("Pointer is not pinned inside the emscripten heap");
return managedValue.offsetInBytes;
};
JSIL.PInvoke.PointerMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
JSIL.RuntimeError("Not implemented");
};
JSIL.PInvoke.ByRefMarshaller = function ByRefMarshaller (type) {
this.type = type;
// XXX (Mispy): should this be necessary? the first is null for ref System.String
this.innerType = type.__ReferentType__.__Type__ || type.__ReferentType__;
this.innerMarshaller = JSIL.PInvoke.GetMarshallerForType(this.innerType, true);
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.ByRefMarshaller);
JSIL.PInvoke.ByRefMarshaller.prototype.GetSignatureToken = function () {
return "i";
};
JSIL.PInvoke.ByRefMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
var emscriptenOffset = this.innerMarshaller.ManagedToNative(managedValue.get(), callContext);
var innerMarshaller = this.innerMarshaller;
callContext.QueueCleanup(function () {
managedValue.set(innerMarshaller.NativeToManaged(emscriptenOffset, callContext));
});
return emscriptenOffset;
};
JSIL.PInvoke.ByRefMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
JSIL.RuntimeError("Not valid for byref arguments");
};
JSIL.PInvoke.ByRefStringMarshaller = function ByRefStringMarshaller () {
this.innerMarshaller = JSIL.PInvoke.GetMarshallerForType(System.String.__Type__);
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.ByRefStringMarshaller);
JSIL.PInvoke.ByRefStringMarshaller.prototype.GetSignatureToken = function () {
return "i";
};
JSIL.PInvoke.ByRefStringMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
var module = callContext.module;
var addressOffset = callContext.Allocate(4);
var emscriptenOffset = this.innerMarshaller.ManagedToNative(managedValue.get(), callContext);
module.HEAPU32[addressOffset / 4] = emscriptenOffset;
var innerMarshaller = this.innerMarshaller;
callContext.QueueCleanup(function () {
var newOffset = module.HEAPU32[addressOffset / 4];
if (newOffset != emscriptenOffset)
managedValue.set(innerMarshaller.NativeToManaged(newOffset, callContext));
});
return addressOffset;
};
JSIL.PInvoke.ByRefStringMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
// FIXME: Is this right?
var resultString = innerMarshaller.NativeToManaged(nativeValue, callContext);
return new JSIL.BoxedValue(resultString);
};
JSIL.PInvoke.ArrayMarshaller = function ArrayMarshaller (type, isOut) {
this.type = type;
this.elementType = type.__ElementType__;
this.isOut = isOut;
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.ArrayMarshaller);
JSIL.PInvoke.ArrayMarshaller.prototype.GetSignatureToken = function () {
return "i";
};
JSIL.PInvoke.ArrayMarshaller.CreateTemporaryNativeCopy = function (pointer, sizeBytes, callContext, isOut) {
var module = callContext.module;
if (pointer.__IsNull__)
return 0;
if (pointer.memoryRange.buffer === module.HEAPU8.buffer) {
return pointer.offsetInBytes | 0;
} else {
// Copy to temporary storage on the emscripten heap, then copy back after the call
var emscriptenOffset = callContext.Allocate(sizeBytes);
var sourceView = pointer.asView($jsilcore.System.Byte, sizeBytes);
var destView = new Uint8Array(module.HEAPU8.buffer, emscriptenOffset, sizeBytes);
destView.set(sourceView, 0);
if (isOut) {
callContext.QueueCleanup(function () {
sourceView.set(destView, 0);
});
}
return emscriptenOffset;
}
};
JSIL.PInvoke.ArrayMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
var module = callContext.module;
if (this.elementType.__FullName__ == "System.String") {
// for string arrays, just marshal a pointer to each of them individually
var pointers = new Uint32Array(managedValue.length);
var stringMarshaller = new JSIL.PInvoke.StringMarshaller();
for (var i = 0; i < managedValue.length; i++) {
pointers[i] = stringMarshaller.ManagedToNative(managedValue[i], callContext);
}
var nPointerBytes = pointers.length * pointers.BYTES_PER_ELEMENT;
var pointerPtr = module._malloc(nPointerBytes);
var pointerHeap = new Uint8Array(module.HEAPU8.buffer, pointerPtr, nPointerBytes);
pointerHeap.set(new Uint8Array(pointers.buffer));
return pointerHeap.byteOffset;
}
var pointer = JSIL.PinAndGetPointer(managedValue, 0, false);
if (pointer === null) {
// Array can't be pinned, so copy to temporary storage one item at a time, then back
// FIXME: Generate a one-time performance warning if this array is big
var arrayLength = managedValue.length;
var itemSizeBytes = JSIL.GetNativeSizeOf(this.elementType);
var sizeBytes = arrayLength * itemSizeBytes;
var emscriptenOffset = callContext.Allocate(sizeBytes);
var destPointer = JSIL.PInvoke.CreateBytePointerForModule(module, emscriptenOffset).cast(this.elementType);
for (var i = 0; i < arrayLength; i++)
destPointer.setElement(i, managedValue[i]);
if (this.isOut) {
callContext.QueueCleanup(function () {
for (var i = 0; i < arrayLength; i++)
managedValue[i] = destPointer.getElement(i);
});
}
return emscriptenOffset;
}
return JSIL.PInvoke.ArrayMarshaller.CreateTemporaryNativeCopy(
pointer, managedValue.byteLength, callContext, this.isOut
);
};
JSIL.PInvoke.ArrayMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
JSIL.RuntimeError("Not valid for array arguments");
};
JSIL.PInvoke.StringBuilderMarshaller = function StringBuilderMarshaller (charSet) {
if (charSet)
JSIL.RuntimeError("Not implemented");
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.StringBuilderMarshaller);
JSIL.PInvoke.StringBuilderMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
var sizeInBytes = managedValue.get_Capacity();
var emscriptenOffset = callContext.Allocate(sizeInBytes + 1);
var module = callContext.module;
var tByte = $jsilcore.System.Byte.__Type__;
var memoryRange = JSIL.GetMemoryRangeForBuffer(module.HEAPU8.buffer);
var emscriptenMemoryView = memoryRange.getView(tByte);
for (var i = 0, l = sizeInBytes + 1; i < l; i++)
module.HEAPU8[(i + emscriptenOffset) | 0] = 0;
System.Text.Encoding.ASCII.GetBytes(
managedValue._str, 0, managedValue._str.length, module.HEAPU8, emscriptenOffset
);
callContext.QueueCleanup(function () {
managedValue._str = JSIL.StringFromNullTerminatedByteArray(
module.HEAPU8, emscriptenOffset, managedValue._capacity
);
});
return emscriptenOffset;
};
JSIL.PInvoke.StringBuilderMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
JSIL.RuntimeError("Not valid");
};
JSIL.PInvoke.StringMarshaller = function StringMarshaller (charSet) {
if (charSet)
JSIL.RuntimeError("Not implemented");
this.allocates = true;
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.StringMarshaller);
JSIL.PInvoke.StringMarshaller.prototype.GetSignatureToken = function() {
return "i";
}
JSIL.PInvoke.StringMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
var sizeInBytes = managedValue.length;
var emscriptenOffset = callContext.Allocate(sizeInBytes + 1);
var module = callContext.module;
var tByte = $jsilcore.System.Byte.__Type__;
var memoryRange = JSIL.GetMemoryRangeForBuffer(module.HEAPU8.buffer);
var emscriptenMemoryView = memoryRange.getView(tByte);
for (var i = 0, l = sizeInBytes + 1; i < l; i++)
module.HEAPU8[(i + emscriptenOffset) | 0] = 0;
System.Text.Encoding.ASCII.GetBytes(
managedValue, 0, managedValue.length, module.HEAPU8, emscriptenOffset
);
return emscriptenOffset;
};
JSIL.PInvoke.StringMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
var module = callContext.module;
if (nativeValue < 0) {
JSIL.RuntimeErrorFormat("StringMarshaller NativeToManaged got a negative nativeValue ({0})", [nativeValue]);
return null;
}
var length = 0;
while (true) {
if (module.HEAPU8[(nativeValue + length) | 0] == 0) {
break;
}
length += 1;
}
var memoryRange = new JSIL.MemoryRange(module.HEAPU8.buffer, nativeValue, length);
var tByte = $jsilcore.System.Byte.__Type__;
var view = memoryRange.getView(tByte);
var s = System.Text.Encoding.ASCII.GetString(view);
JSIL.WarningFormat("assuming string is ASCII-encoded: {0}", [s]);
return s;
}
JSIL.PInvoke.DelegateMarshaller = function DelegateMarshaller (type) {
this.type = type;
};
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.DelegateMarshaller);
JSIL.PInvoke.DelegateMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
var module = callContext.module;
var wrapper = JSIL.PInvoke.CreateNativeToManagedWrapper(
module, managedValue, this.type.__Signature__
);
var functionPointer = module.Runtime.addFunction(wrapper);
callContext.QueueCleanup(function () {
module.Runtime.removeFunction(functionPointer);
});
return functionPointer;
};
JSIL.PInvoke.DelegateMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
var module = callContext.module;
var wrapper = System.Runtime.InteropServices.Marshal.GetDelegateForFunctionPointer$b1(
this.type
)(
JSIL.PInvoke.CreateIntPtrForModule(callContext.module, nativeValue)
);
return wrapper;
};
// Fallback UnimplementedMarshaller delays error until the actual point of attempted marshalling
JSIL.PInvoke.UnimplementedMarshaller = function UnimplementedMarshaller (type, errorMsg) {
this.type = type;
}
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.UnimplementedMarshaller);
JSIL.PInvoke.UnimplementedMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
JSIL.RuntimeErrorFormat("Type '{0}' has no marshalling implementation", [this.type.__FullName__]);
}
JSIL.PInvoke.UnimplementedMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
JSIL.RuntimeErrorFormat("Type '{0}' has no marshalling implementation", [this.type.__FullName__]);
}
JSIL.PInvoke.ManagedMarshaller = function ManagedMarshaller (type, customMarshalerType, cookie) {
this.type = type;
this.customMarshalerPublicInterface = JSIL.ResolveTypeReference(customMarshalerType)[0];
if (typeof (cookie) === "string")
this.cookie = cookie;
else
this.cookie = null;
this.cachedInstance = null;
}
JSIL.PInvoke.SetupMarshallerPrototype(JSIL.PInvoke.ManagedMarshaller);
JSIL.PInvoke.ManagedMarshaller.prototype.GetInstance = function () {
if (!this.cachedInstance)
this.cachedInstance = this.customMarshalerPublicInterface.GetInstance(this.cookie);
return this.cachedInstance;
};
JSIL.PInvoke.ManagedMarshaller.prototype.GetSignatureToken = function () {
return "i";
};
JSIL.PInvoke.ManagedMarshaller.prototype.ManagedToNative = function (managedValue, callContext) {
var instance = this.GetInstance();
var ptr = instance.MarshalManagedToNative(managedValue);
callContext.QueueCleanup(function () {
instance.CleanUpNativeData(ptr);
});
var emscriptenOffset = ptr.ToInt32();
return emscriptenOffset;
}
JSIL.PInvoke.ManagedMarshaller.prototype.NativeToManaged = function (nativeValue, callContext) {
var instance = this.GetInstance();
var ptr = JSIL.PInvoke.CreateIntPtrForModule(callContext.module, nativeValue);
var managedValue = instance.MarshalNativeToManaged(ptr);
callContext.QueueCleanup(function () {
instance.CleanUpManagedData(managedValue);
});
return managedValue;
}
JSIL.PInvoke.WrapManagedCustomMarshaler = function (type, customMarshaler, cookie) {
return new JSIL.PInvoke.ManagedMarshaller(type, customMarshaler, cookie);
};
JSIL.PInvoke.GetMarshallerForType = function (type, box, isOut) {
// FIXME: Caching
if (type.__IsByRef__) {
var rt = type.__ReferentType__.__Type__ || type.__ReferentType__;
if (rt && rt.__FullName__ === "System.String")
return new JSIL.PInvoke.ByRefStringMarshaller();
else
return new JSIL.PInvoke.ByRefMarshaller(type);
}
var typeName = type.__FullNameWithoutArguments__ || type.__FullName__;
switch (typeName) {
case "System.IntPtr":
case "System.UIntPtr":
return new JSIL.PInvoke.IntPtrMarshaller();
case "JSIL.Pointer":
return new JSIL.PInvoke.PointerMarshaller(type);
case "System.Text.StringBuilder":
return new JSIL.PInvoke.StringBuilderMarshaller();
case "System.String":
return new JSIL.PInvoke.StringMarshaller();
}
if (type.__IsDelegate__) {
return new JSIL.PInvoke.DelegateMarshaller(type);
} else if (type.__IsNativeType__) {
if (box)
return new JSIL.PInvoke.BoxedValueMarshaller(type);
else
return new JSIL.PInvoke.ByValueMarshaller(type);
} else if (type.__IsStruct__) {
return new JSIL.PInvoke.ByValueStructMarshaller(type);
} else if (type.__IsEnum__) {
return new JSIL.PInvoke.EnumMarshaller(type);
} else if (type.__IsArray__) {
return new JSIL.PInvoke.ArrayMarshaller(type, isOut);
} else {
return new JSIL.PInvoke.UnimplementedMarshaller(type);
}
};
JSIL.PInvoke.FindNativeMethod = function (module, methodName) {
var key = "_" + methodName;
return module[key];
};
JSIL.PInvoke.GetMarshallersForSignature = function (methodSignature, pInvokeInfo) {
var argumentMarshallers = new Array(methodSignature.argumentTypes.length);
for (var i = 0, l = argumentMarshallers.length; i < l; i++) {
var argumentType = methodSignature.argumentTypes[i];
var resolvedArgumentType = JSIL.ResolveTypeReference(argumentType)[1];
var marshalInfo = null;
if (pInvokeInfo && pInvokeInfo.Parameters)
marshalInfo = pInvokeInfo.Parameters[i];
if (marshalInfo && marshalInfo.CustomMarshaler) {
argumentMarshallers[i] = JSIL.PInvoke.WrapManagedCustomMarshaler(resolvedArgumentType, marshalInfo.CustomMarshaler, marshalInfo.Cookie);
} else {
var isOut = false;
if (marshalInfo)
isOut = marshalInfo.Out || false;
argumentMarshallers[i] = JSIL.PInvoke.GetMarshallerForType(resolvedArgumentType, false, isOut);
}
}
var resolvedReturnType = null, resultMarshaller = null;
if (methodSignature.returnType) {
resolvedReturnType = JSIL.ResolveTypeReference(methodSignature.returnType)[1];
if (pInvokeInfo && pInvokeInfo.Result && pInvokeInfo.Result.CustomMarshaler) {
resultMarshaller = JSIL.PInvoke.WrapManagedCustomMarshaler(resolvedReturnType, pInvokeInfo.Result.CustomMarshaler, pInvokeInfo.Result.Cookie);
} else {
resultMarshaller = JSIL.PInvoke.GetMarshallerForType(resolvedReturnType);
}
}
return {
arguments: argumentMarshallers,
result: resultMarshaller
};
};
JSIL.PInvoke.CreateManagedToNativeWrapper = function (module, nativeMethod, methodName, methodSignature, pInvokeInfo, marshallers) {
if (!marshallers)
marshallers = JSIL.PInvoke.GetMarshallersForSignature(methodSignature, pInvokeInfo);
var structResult = marshallers.result && marshallers.result.namedReturnValue;
var convertOffset = structResult ? 1 : 0;
var argc = methodSignature.argumentTypes.length;
var argumentNames = new Array(argc + 1);