1.1 --- a/src/CompactBuffer.h Mon Jun 10 00:46:29 2013 +0100
1.2 +++ b/src/CompactBuffer.h Mon Jun 10 01:04:43 2013 +0100
1.3 @@ -1,100 +1,100 @@
1.4 -/* vim: set ts=4 sw=4 tw=99 et:
1.5 - *
1.6 - * Copyright (C) 2012 David Anderson
1.7 - *
1.8 - * This file is part of JITCraft.
1.9 - *
1.10 - * JITCraft is free software: you can redistribute it and/or modify it under
1.11 - * the terms of the GNU General Public License as published by the Free
1.12 - * Software Foundation, either version 3 of the License, or (at your option)
1.13 - * any later version.
1.14 - *
1.15 - * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY
1.16 - * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
1.17 - * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
1.18 - *
1.19 - * You should have received a copy of the GNU General Public License along with
1.20 - * JITCraft. If not, see http://www.gnu.org/licenses/.
1.21 - */
1.22 -#ifndef _include_jc_compact_buffer_h_
1.23 -#define _include_jc_compact_buffer_h_
1.24 -
1.25 -#include "AllocatorPolicies.h"
1.26 -#include "Utility.h"
1.27 -#include "Vector.h"
1.28 -
1.29 -namespace ke {
1.30 -
1.31 -class CompactBufferReader
1.32 -{
1.33 - const uint8 *pos_;
1.34 - const uint8 *end_;
1.35 -
1.36 - public:
1.37 - CompactBufferReader(const uint8 *start, const uint8 *end)
1.38 - : pos_(start),
1.39 - end_(end)
1.40 - {
1.41 - }
1.42 -
1.43 - uint8 readUint8() {
1.44 - assert(pos_ < end_);
1.45 - return *pos_++;
1.46 - }
1.47 -
1.48 - uint32 readUint32() {
1.49 - uint32 value = 0;
1.50 - uint32 shift = 0;
1.51 -
1.52 - uint8 byte;
1.53 - do {
1.54 - byte = readUint8();
1.55 - value |= (byte >> 1) << shift;
1.56 - shift += 7;
1.57 - } while (byte & 1);
1.58 -
1.59 - assert(shift < 32);
1.60 - return value;
1.61 - }
1.62 -
1.63 - bool done() const {
1.64 - return pos_ == end_;
1.65 - }
1.66 -};
1.67 -
1.68 -class CompactBufferWriter
1.69 -{
1.70 - Vector<uint8, ZoneAllocatorPolicy> buffer_;
1.71 - bool enoughMemory_;
1.72 -
1.73 - public:
1.74 - CompactBufferWriter()
1.75 - : enoughMemory_(true)
1.76 - {
1.77 - }
1.78 -
1.79 - void writeUint8(unsigned value) {
1.80 - enoughMemory_ &= buffer_.append(value);
1.81 - }
1.82 - void writeUint32(unsigned value) {
1.83 - do {
1.84 - writeUint8(((value & 0x7F) << 1) | (value > 0x7F));
1.85 - value >>= 7;
1.86 - } while (value);
1.87 - }
1.88 -
1.89 - uint8 *buffer() const {
1.90 - return buffer_.buffer();
1.91 - }
1.92 - size_t length() const {
1.93 - return buffer_.length();
1.94 - }
1.95 -
1.96 - bool oom() const {
1.97 - return !enoughMemory_;
1.98 - }
1.99 -};
1.100 -
1.101 -}
1.102 -
1.103 -#endif // _include_jc_compact_buffer_h_
1.104 +/* vim: set ts=4 sw=4 tw=99 et:
1.105 + *
1.106 + * Copyright (C) 2012 David Anderson
1.107 + *
1.108 + * This file is part of JITCraft.
1.109 + *
1.110 + * JITCraft is free software: you can redistribute it and/or modify it under
1.111 + * the terms of the GNU General Public License as published by the Free
1.112 + * Software Foundation, either version 3 of the License, or (at your option)
1.113 + * any later version.
1.114 + *
1.115 + * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY
1.116 + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
1.117 + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
1.118 + *
1.119 + * You should have received a copy of the GNU General Public License along with
1.120 + * JITCraft. If not, see http://www.gnu.org/licenses/.
1.121 + */
1.122 +#ifndef _include_jc_compact_buffer_h_
1.123 +#define _include_jc_compact_buffer_h_
1.124 +
1.125 +#include "AllocatorPolicies.h"
1.126 +#include "Utility.h"
1.127 +#include "Vector.h"
1.128 +
1.129 +namespace ke {
1.130 +
1.131 +class CompactBufferReader
1.132 +{
1.133 + const uint8 *pos_;
1.134 + const uint8 *end_;
1.135 +
1.136 + public:
1.137 + CompactBufferReader(const uint8 *start, const uint8 *end)
1.138 + : pos_(start),
1.139 + end_(end)
1.140 + {
1.141 + }
1.142 +
1.143 + uint8 readUint8() {
1.144 + assert(pos_ < end_);
1.145 + return *pos_++;
1.146 + }
1.147 +
1.148 + uint32 readUint32() {
1.149 + uint32 value = 0;
1.150 + uint32 shift = 0;
1.151 +
1.152 + uint8 byte;
1.153 + do {
1.154 + byte = readUint8();
1.155 + value |= (byte >> 1) << shift;
1.156 + shift += 7;
1.157 + } while (byte & 1);
1.158 +
1.159 + assert(shift < 32);
1.160 + return value;
1.161 + }
1.162 +
1.163 + bool done() const {
1.164 + return pos_ == end_;
1.165 + }
1.166 +};
1.167 +
1.168 +class CompactBufferWriter
1.169 +{
1.170 + Vector<uint8, ZoneAllocatorPolicy> buffer_;
1.171 + bool enoughMemory_;
1.172 +
1.173 + public:
1.174 + CompactBufferWriter()
1.175 + : enoughMemory_(true)
1.176 + {
1.177 + }
1.178 +
1.179 + void writeUint8(unsigned value) {
1.180 + enoughMemory_ &= buffer_.append(value);
1.181 + }
1.182 + void writeUint32(unsigned value) {
1.183 + do {
1.184 + writeUint8(((value & 0x7F) << 1) | (value > 0x7F));
1.185 + value >>= 7;
1.186 + } while (value);
1.187 + }
1.188 +
1.189 + uint8 *buffer() const {
1.190 + return buffer_.buffer();
1.191 + }
1.192 + size_t length() const {
1.193 + return buffer_.length();
1.194 + }
1.195 +
1.196 + bool oom() const {
1.197 + return !enoughMemory_;
1.198 + }
1.199 +};
1.200 +
1.201 +}
1.202 +
1.203 +#endif // _include_jc_compact_buffer_h_
