| // Copyright 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. |
| |
| #include <string.h> |
| #include "v8.h" |
| #include "ast.h" |
| #include "assembler.h" |
| #include "regexp-macro-assembler.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| RegExpMacroAssembler::RegExpMacroAssembler() { |
| } |
| |
| |
| RegExpMacroAssembler::~RegExpMacroAssembler() { |
| } |
| |
| |
| ByteArrayProvider::ByteArrayProvider(unsigned int initial_size) |
| : byte_array_size_(initial_size), |
| current_byte_array_(), |
| current_byte_array_free_offset_(initial_size) {} |
| |
| |
| ArraySlice ByteArrayProvider::GetBuffer(unsigned int size, |
| unsigned int elem_size) { |
| ASSERT(size > 0); |
| size_t byte_size = size * elem_size; |
| int free_offset = current_byte_array_free_offset_; |
| // align elements |
| free_offset += elem_size - 1; |
| free_offset = free_offset - (free_offset % elem_size); |
| |
| if (free_offset + byte_size > byte_array_size_) { |
| if (byte_size > (byte_array_size_ / 2)) { |
| Handle<ByteArray> solo_buffer(Factory::NewByteArray(byte_size, TENURED)); |
| return ArraySlice(solo_buffer, 0); |
| } |
| current_byte_array_ = Factory::NewByteArray(byte_array_size_, TENURED); |
| free_offset = 0; |
| } |
| current_byte_array_free_offset_ = free_offset + byte_size; |
| return ArraySlice(current_byte_array_, free_offset); |
| } |
| |
| |
| template <typename T> |
| ArraySlice ByteArrayProvider::GetBuffer(Vector<T> values) { |
| ArraySlice slice = GetBuffer(values.length(), sizeof(T)); |
| memcpy(slice.location(), values.start(), values.length() * sizeof(T)); |
| return slice; |
| } |
| } } // namespace v8::internal |