src/dawn/native/stream/ByteVectorSink.cpp

// Copyright 2022 The Dawn & Tint Authors
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#include "dawn/native/stream/ByteVectorSink.h"

#include <iomanip>
#include "dawn/native/stream/Stream.h"

namespace dawn::native::stream {

void* ByteVectorSink::GetSpace(size_t bytes) {
    size_t currentSize = this->size();
    this->resize(currentSize + bytes);
    return &this->operator[](currentSize);
}

template <>
void stream::Stream<ByteVectorSink>::Write(stream::Sink* sink, const ByteVectorSink& vec) {
    // For nested sinks, we do not record the length, and just copy the data so that it
    // appears flattened.
    size_t size = vec.size();
    if (size > 0) {
        void* ptr = sink->GetSpace(size);
        memcpy(ptr, vec.data(), size);
    }
}

std::ostream& operator<<(std::ostream& os, const ByteVectorSink& vec) {
    os << std::hex;
    for (const int b : vec) {
        os << std::setfill('0') << std::setw(2) << b << " ";
    }
    os << std::dec;
    return os;
}

}  // namespace dawn::native::stream