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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #ifndef RUNTIME_VM_DATASTREAM_H_ | 5 #ifndef RUNTIME_VM_DATASTREAM_H_ |
6 #define RUNTIME_VM_DATASTREAM_H_ | 6 #define RUNTIME_VM_DATASTREAM_H_ |
7 | 7 |
8 #include "platform/assert.h" | 8 #include "platform/assert.h" |
9 #include "platform/utils.h" | 9 #include "platform/utils.h" |
10 #include "vm/allocation.h" | 10 #include "vm/allocation.h" |
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85 void Advance(intptr_t value) { | 85 void Advance(intptr_t value) { |
86 ASSERT((end_ - current_) > value); | 86 ASSERT((end_ - current_) > value); |
87 current_ = current_ + value; | 87 current_ = current_ + value; |
88 } | 88 } |
89 | 89 |
90 intptr_t PendingBytes() const { | 90 intptr_t PendingBytes() const { |
91 ASSERT(end_ >= current_); | 91 ASSERT(end_ >= current_); |
92 return (end_ - current_); | 92 return (end_ - current_); |
93 } | 93 } |
94 | 94 |
95 private: | |
96 template <typename T> | 95 template <typename T> |
97 T Read() { | 96 T Read() { |
98 return Read<T>(kEndByteMarker); | 97 return Read<T>(kEndByteMarker); |
99 } | 98 } |
100 | 99 |
| 100 private: |
101 int16_t Read16() { return Read16(kEndByteMarker); } | 101 int16_t Read16() { return Read16(kEndByteMarker); } |
102 | 102 |
103 int32_t Read32() { return Read32(kEndByteMarker); } | 103 int32_t Read32() { return Read32(kEndByteMarker); } |
104 | 104 |
105 int64_t Read64() { return Read64(kEndByteMarker); } | 105 int64_t Read64() { return Read64(kEndByteMarker); } |
106 | 106 |
107 template <typename T> | 107 template <typename T> |
108 T Read(uint8_t end_byte_marker) { | 108 T Read(uint8_t end_byte_marker) { |
109 const uint8_t* c = current_; | 109 const uint8_t* c = current_; |
110 ASSERT(c < end_); | 110 ASSERT(c < end_); |
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383 *reinterpret_cast<uword*>(current_) = value; | 383 *reinterpret_cast<uword*>(current_) = value; |
384 current_ += len; | 384 current_ += len; |
385 } | 385 } |
386 | 386 |
387 void Print(const char* format, ...) { | 387 void Print(const char* format, ...) { |
388 va_list args; | 388 va_list args; |
389 va_start(args, format); | 389 va_start(args, format); |
390 VPrint(format, args); | 390 VPrint(format, args); |
391 } | 391 } |
392 | 392 |
393 private: | |
394 template <typename T> | 393 template <typename T> |
395 void Write(T value) { | 394 void Write(T value) { |
396 T v = value; | 395 T v = value; |
397 while (v < kMinDataPerByte || v > kMaxDataPerByte) { | 396 while (v < kMinDataPerByte || v > kMaxDataPerByte) { |
398 WriteByte(static_cast<uint8_t>(v & kByteMask)); | 397 WriteByte(static_cast<uint8_t>(v & kByteMask)); |
399 v = v >> kDataBitsPerByte; | 398 v = v >> kDataBitsPerByte; |
400 } | 399 } |
401 WriteByte(static_cast<uint8_t>(v + kEndByteMarker)); | 400 WriteByte(static_cast<uint8_t>(v + kEndByteMarker)); |
402 } | 401 } |
403 | 402 |
| 403 private: |
404 DART_FORCE_INLINE void WriteByte(uint8_t value) { | 404 DART_FORCE_INLINE void WriteByte(uint8_t value) { |
405 if (current_ >= end_) { | 405 if (current_ >= end_) { |
406 Resize(1); | 406 Resize(1); |
407 } | 407 } |
408 ASSERT(current_ < end_); | 408 ASSERT(current_ < end_); |
409 *current_++ = value; | 409 *current_++ = value; |
410 } | 410 } |
411 | 411 |
412 void Resize(intptr_t size_needed) { | 412 void Resize(intptr_t size_needed) { |
413 intptr_t position = current_ - *buffer_; | 413 intptr_t position = current_ - *buffer_; |
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457 intptr_t current_size_; | 457 intptr_t current_size_; |
458 ReAlloc alloc_; | 458 ReAlloc alloc_; |
459 intptr_t initial_size_; | 459 intptr_t initial_size_; |
460 | 460 |
461 DISALLOW_COPY_AND_ASSIGN(WriteStream); | 461 DISALLOW_COPY_AND_ASSIGN(WriteStream); |
462 }; | 462 }; |
463 | 463 |
464 } // namespace dart | 464 } // namespace dart |
465 | 465 |
466 #endif // RUNTIME_VM_DATASTREAM_H_ | 466 #endif // RUNTIME_VM_DATASTREAM_H_ |
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