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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef WEBGPU_TYPES_H_
#define WEBGPU_TYPES_H_
#include <cstdint>
#include "mozilla/Maybe.h"
#include "nsString.h"
#include "mozilla/dom/BindingDeclarations.h"
namespace mozilla::webgpu {
using RawId = uint64_t;
using BufferAddress = uint64_t;
struct ScopedError {
// Did an error occur as a result the attempt to retrieve an error
// (e.g. from a dead device, from an empty scope stack)?
bool operationError = false;
// If non-empty, the first error generated when this scope was on
// the top of the stack. This is interpreted as UTF-8.
nsCString validationMessage;
};
using MaybeScopedError = Maybe<ScopedError>;
enum class WebGPUCompilationMessageType { Error, Warning, Info };
// TODO: Better name? CompilationMessage alread taken by the dom object.
/// The serializable counterpart of the dom object CompilationMessage.
struct WebGPUCompilationMessage {
nsString message;
uint64_t lineNum = 0;
uint64_t linePos = 0;
// In utf16 code units.
uint64_t offset = 0;
// In utf16 code units.
uint64_t length = 0;
WebGPUCompilationMessageType messageType =
WebGPUCompilationMessageType::Error;
};
/// A helper to reduce the boiler plate of turning the many Optional<nsAString>
/// we get from the dom to the nullable nsACString* we pass to the wgpu ffi.
class StringHelper {
public:
explicit StringHelper(const dom::Optional<nsString>& aWide) {
if (aWide.WasPassed()) {
mNarrow = Some(NS_ConvertUTF16toUTF8(aWide.Value()));
}
}
const nsACString* Get() const {
if (mNarrow.isSome()) {
return mNarrow.ptr();
}
return nullptr;
}
private:
Maybe<NS_ConvertUTF16toUTF8> mNarrow;
};
} // namespace mozilla::webgpu
#endif // WEBGPU_TYPES_H_
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