Zachary Anderson
7308e58c3f
Previously we would compile in implementaitions of native calls for IO functions that would never be used. This CL provides implementations that throw a Dart exception if they're called by mistake. It also uses a DART_IO_DISABLED preprocessor define to clean up the build files and check that we're not including code we shouldn't. R=iposva@google.com, johnmccutchan@google.com Review URL: https://codereview.chromium.org/1839463002 .
117 lines
3.5 KiB
C++
117 lines
3.5 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef BIN_FILTER_H_
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#define BIN_FILTER_H_
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#if defined(DART_IO_DISABLED)
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#error "filter.h can only be included on builds with IO enabled"
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#endif
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#include "bin/builtin.h"
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#include "bin/utils.h"
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#include "zlib/zlib.h"
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namespace dart {
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namespace bin {
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class Filter {
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public:
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virtual ~Filter() {}
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virtual bool Init() = 0;
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/**
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* On a successful call to Process, Process will take ownership of data. On
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* successive calls to either Processed or ~Filter, data will be freed with
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* a delete[] call.
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*/
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virtual bool Process(uint8_t* data, intptr_t length) = 0;
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virtual intptr_t Processed(uint8_t* buffer, intptr_t length, bool finish,
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bool end) = 0;
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static Dart_Handle SetFilterAndCreateFinalizer(Dart_Handle filter,
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Filter* filter_pointer,
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intptr_t filter_size);
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static Dart_Handle GetFilterNativeField(Dart_Handle filter,
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Filter** filter_pointer);
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bool initialized() const { return initialized_; }
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void set_initialized(bool value) { initialized_ = value; }
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uint8_t* processed_buffer() { return processed_buffer_; }
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intptr_t processed_buffer_size() const { return kFilterBufferSize; }
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protected:
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Filter() : initialized_(false) {}
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private:
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static const intptr_t kFilterBufferSize = 64 * KB;
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uint8_t processed_buffer_[kFilterBufferSize];
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bool initialized_;
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DISALLOW_COPY_AND_ASSIGN(Filter);
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};
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class ZLibDeflateFilter : public Filter {
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public:
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ZLibDeflateFilter(bool gzip, int32_t level, int32_t window_bits,
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int32_t mem_level, int32_t strategy,
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uint8_t* dictionary, intptr_t dictionary_length, bool raw)
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: gzip_(gzip), level_(level), window_bits_(window_bits),
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mem_level_(mem_level), strategy_(strategy), dictionary_(dictionary),
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dictionary_length_(dictionary_length), raw_(raw), current_buffer_(NULL)
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{}
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virtual ~ZLibDeflateFilter();
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virtual bool Init();
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virtual bool Process(uint8_t* data, intptr_t length);
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virtual intptr_t Processed(uint8_t* buffer, intptr_t length, bool finish,
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bool end);
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private:
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const bool gzip_;
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const int32_t level_;
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const int32_t window_bits_;
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const int32_t mem_level_;
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const int32_t strategy_;
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uint8_t* dictionary_;
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const intptr_t dictionary_length_;
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const bool raw_;
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uint8_t* current_buffer_;
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z_stream stream_;
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DISALLOW_COPY_AND_ASSIGN(ZLibDeflateFilter);
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};
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class ZLibInflateFilter : public Filter {
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public:
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ZLibInflateFilter(int32_t window_bits, uint8_t* dictionary,
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intptr_t dictionary_length, bool raw)
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: window_bits_(window_bits), dictionary_(dictionary),
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dictionary_length_(dictionary_length), raw_(raw), current_buffer_(NULL)
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{}
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virtual ~ZLibInflateFilter();
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virtual bool Init();
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virtual bool Process(uint8_t* data, intptr_t length);
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virtual intptr_t Processed(uint8_t* buffer, intptr_t length, bool finish,
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bool end);
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private:
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const int32_t window_bits_;
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uint8_t* dictionary_;
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const intptr_t dictionary_length_;
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const bool raw_;
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uint8_t* current_buffer_;
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z_stream stream_;
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DISALLOW_COPY_AND_ASSIGN(ZLibInflateFilter);
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};
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} // namespace bin
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} // namespace dart
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#endif // BIN_FILTER_H_
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