summaryrefslogtreecommitdiffstats
path: root/V8Binding/v8/src/unicode-inl.h
diff options
context:
space:
mode:
Diffstat (limited to 'V8Binding/v8/src/unicode-inl.h')
-rw-r--r--V8Binding/v8/src/unicode-inl.h238
1 files changed, 0 insertions, 238 deletions
diff --git a/V8Binding/v8/src/unicode-inl.h b/V8Binding/v8/src/unicode-inl.h
deleted file mode 100644
index 0ee03bd..0000000
--- a/V8Binding/v8/src/unicode-inl.h
+++ /dev/null
@@ -1,238 +0,0 @@
-// Copyright 2007-2008 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following
-// disclaimer in the documentation and/or other materials provided
-// with the distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef V8_UNICODE_INL_H_
-#define V8_UNICODE_INL_H_
-
-#include "unicode.h"
-
-namespace unibrow {
-
-template <class T, int s> bool Predicate<T, s>::get(uchar code_point) {
- CacheEntry entry = entries_[code_point & kMask];
- if (entry.code_point_ == code_point) return entry.value_;
- return CalculateValue(code_point);
-}
-
-template <class T, int s> bool Predicate<T, s>::CalculateValue(
- uchar code_point) {
- bool result = T::Is(code_point);
- entries_[code_point & kMask] = CacheEntry(code_point, result);
- return result;
-}
-
-template <class T, int s> int Mapping<T, s>::get(uchar c, uchar n,
- uchar* result) {
- CacheEntry entry = entries_[c & kMask];
- if (entry.code_point_ == c) {
- if (entry.offset_ == 0) {
- return 0;
- } else {
- result[0] = c + entry.offset_;
- return 1;
- }
- } else {
- return CalculateValue(c, n, result);
- }
-}
-
-template <class T, int s> int Mapping<T, s>::CalculateValue(uchar c, uchar n,
- uchar* result) {
- bool allow_caching = true;
- int length = T::Convert(c, n, result, &allow_caching);
- if (allow_caching) {
- if (length == 1) {
- entries_[c & kMask] = CacheEntry(c, result[0] - c);
- return 1;
- } else {
- entries_[c & kMask] = CacheEntry(c, 0);
- return 0;
- }
- } else {
- return length;
- }
-}
-
-
-unsigned Utf8::Encode(char* str, uchar c) {
- static const int kMask = ~(1 << 6);
- if (c <= kMaxOneByteChar) {
- str[0] = c;
- return 1;
- } else if (c <= kMaxTwoByteChar) {
- str[0] = 0xC0 | (c >> 6);
- str[1] = 0x80 | (c & kMask);
- return 2;
- } else if (c <= kMaxThreeByteChar) {
- str[0] = 0xE0 | (c >> 12);
- str[1] = 0x80 | ((c >> 6) & kMask);
- str[2] = 0x80 | (c & kMask);
- return 3;
- } else {
- str[0] = 0xF0 | (c >> 18);
- str[1] = 0x80 | ((c >> 12) & kMask);
- str[2] = 0x80 | ((c >> 6) & kMask);
- str[3] = 0x80 | (c & kMask);
- return 4;
- }
-}
-
-
-uchar Utf8::ValueOf(const byte* bytes, unsigned length, unsigned* cursor) {
- if (length <= 0) return kBadChar;
- byte first = bytes[0];
- // Characters between 0000 and 0007F are encoded as a single character
- if (first <= kMaxOneByteChar) {
- *cursor += 1;
- return first;
- }
- return CalculateValue(bytes, length, cursor);
-}
-
-unsigned Utf8::Length(uchar c) {
- if (c <= kMaxOneByteChar) {
- return 1;
- } else if (c <= kMaxTwoByteChar) {
- return 2;
- } else if (c <= kMaxThreeByteChar) {
- return 3;
- } else {
- return 4;
- }
-}
-
-uchar CharacterStream::GetNext() {
- uchar result = DecodeCharacter(buffer_, &cursor_);
- if (remaining_ == 1) {
- cursor_ = 0;
- FillBuffer();
- } else {
- remaining_--;
- }
- return result;
-}
-
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-#define IF_LITTLE(expr) expr
-#define IF_BIG(expr) ((void) 0)
-#elif __BYTE_ORDER == __BIG_ENDIAN
-#define IF_LITTLE(expr) ((void) 0)
-#define IF_BIG(expr) expr
-#else
-#warning Unknown byte ordering
-#endif
-
-bool CharacterStream::EncodeAsciiCharacter(uchar c, byte* buffer,
- unsigned capacity, unsigned& offset) {
- if (offset >= capacity) return false;
- buffer[offset] = c;
- offset += 1;
- return true;
-}
-
-bool CharacterStream::EncodeNonAsciiCharacter(uchar c, byte* buffer,
- unsigned capacity, unsigned& offset) {
- unsigned aligned = (offset + 0x3) & ~0x3;
- if ((aligned + sizeof(uchar)) > capacity)
- return false;
- if (offset == aligned) {
- IF_LITTLE(*reinterpret_cast<uchar*>(buffer + aligned) = (c << 8) | 0x80);
- IF_BIG(*reinterpret_cast<uchar*>(buffer + aligned) = c | (1 << 31));
- } else {
- buffer[offset] = 0x80;
- IF_LITTLE(*reinterpret_cast<uchar*>(buffer + aligned) = c << 8);
- IF_BIG(*reinterpret_cast<uchar*>(buffer + aligned) = c);
- }
- offset = aligned + sizeof(uchar);
- return true;
-}
-
-bool CharacterStream::EncodeCharacter(uchar c, byte* buffer, unsigned capacity,
- unsigned& offset) {
- if (c <= Utf8::kMaxOneByteChar) {
- return EncodeAsciiCharacter(c, buffer, capacity, offset);
- } else {
- return EncodeNonAsciiCharacter(c, buffer, capacity, offset);
- }
-}
-
-uchar CharacterStream::DecodeCharacter(const byte* buffer, unsigned* offset) {
- byte b = buffer[*offset];
- if (b <= Utf8::kMaxOneByteChar) {
- (*offset)++;
- return b;
- } else {
- unsigned aligned = (*offset + 0x3) & ~0x3;
- *offset = aligned + sizeof(uchar);
- IF_LITTLE(return *reinterpret_cast<const uchar*>(buffer + aligned) >> 8);
- IF_BIG(return *reinterpret_cast<const uchar*>(buffer + aligned) &
- ~(1 << 31));
- }
-}
-
-#undef IF_LITTLE
-#undef IF_BIG
-
-template <class R, class I, unsigned s>
-void InputBuffer<R, I, s>::FillBuffer() {
- buffer_ = R::ReadBlock(input_, util_buffer_, s, &remaining_, &offset_);
-}
-
-template <class R, class I, unsigned s>
-void InputBuffer<R, I, s>::Rewind() {
- Reset(input_);
-}
-
-template <class R, class I, unsigned s>
-void InputBuffer<R, I, s>::Reset(unsigned position, I input) {
- input_ = input;
- remaining_ = 0;
- cursor_ = 0;
- offset_ = position;
- buffer_ = R::ReadBlock(input_, util_buffer_, s, &remaining_, &offset_);
-}
-
-template <class R, class I, unsigned s>
-void InputBuffer<R, I, s>::Reset(I input) {
- Reset(0, input);
-}
-
-template <class R, class I, unsigned s>
-void InputBuffer<R, I, s>::Seek(unsigned position) {
- offset_ = position;
- buffer_ = R::ReadBlock(input_, util_buffer_, s, &remaining_, &offset_);
-}
-
-template <unsigned s>
-Utf8InputBuffer<s>::Utf8InputBuffer(const char* data, unsigned length)
- : InputBuffer<Utf8, Buffer<const char*>, s>(Buffer<const char*>(data,
- length)) {
-}
-
-} // namespace unibrow
-
-#endif // V8_UNICODE_INL_H_
generated by cgit v1.1 at 2024-06-10 05:21:21 +0000