ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame^] | 1 | // Copyright 2008 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include <string.h> |
| 29 | #include "v8.h" |
| 30 | #include "ast.h" |
| 31 | #include "assembler.h" |
| 32 | #include "regexp-macro-assembler.h" |
| 33 | |
| 34 | namespace v8 { namespace internal { |
| 35 | |
| 36 | RegExpMacroAssembler::RegExpMacroAssembler() { |
| 37 | } |
| 38 | |
| 39 | |
| 40 | RegExpMacroAssembler::~RegExpMacroAssembler() { |
| 41 | } |
| 42 | |
| 43 | |
| 44 | ByteArrayProvider::ByteArrayProvider(unsigned int initial_size) |
| 45 | : byte_array_size_(initial_size), |
| 46 | current_byte_array_(), |
| 47 | current_byte_array_free_offset_(initial_size) {} |
| 48 | |
| 49 | |
| 50 | ArraySlice ByteArrayProvider::GetBuffer(unsigned int size, |
| 51 | unsigned int elem_size) { |
| 52 | ASSERT(size > 0); |
| 53 | size_t byte_size = size * elem_size; |
| 54 | int free_offset = current_byte_array_free_offset_; |
| 55 | // align elements |
| 56 | free_offset += elem_size - 1; |
| 57 | free_offset = free_offset - (free_offset % elem_size); |
| 58 | |
| 59 | if (free_offset + byte_size > byte_array_size_) { |
| 60 | if (byte_size > (byte_array_size_ / 2)) { |
| 61 | Handle<ByteArray> solo_buffer(Factory::NewByteArray(byte_size, TENURED)); |
| 62 | return ArraySlice(solo_buffer, 0); |
| 63 | } |
| 64 | current_byte_array_ = Factory::NewByteArray(byte_array_size_, TENURED); |
| 65 | free_offset = 0; |
| 66 | } |
| 67 | current_byte_array_free_offset_ = free_offset + size; |
| 68 | return ArraySlice(current_byte_array_, free_offset); |
| 69 | } |
| 70 | |
| 71 | template <typename T> |
| 72 | ArraySlice ByteArrayProvider::GetBuffer(Vector<T> values) { |
| 73 | ArraySlice slice = GetBuffer(values.length(), sizeof(T)); |
| 74 | memcpy(slice.location(), values.start(), values.length() * sizeof(T)); |
| 75 | return slice; |
| 76 | } |
| 77 | } } |