Squashed 'third_party/flatbuffers/' content from commit acc9990ab
Change-Id: I48550d40d78fea996ebe74e9723a5d1f910de491
git-subtree-dir: third_party/flatbuffers
git-subtree-split: acc9990abd2206491480291b0f85f925110102ea
diff --git a/php/Table.php b/php/Table.php
new file mode 100644
index 0000000..bf6fe21
--- /dev/null
+++ b/php/Table.php
@@ -0,0 +1,145 @@
+<?php
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+namespace Google\FlatBuffers;
+
+abstract class Table
+{
+ /**
+ * @var int $bb_pos
+ */
+ protected $bb_pos;
+ /**
+ * @var ByteBuffer $bb
+ */
+ protected $bb;
+
+ public function __construct()
+ {
+ }
+
+ public function setByteBufferPos($pos)
+ {
+ $this->bb_pos = $pos;
+ }
+
+ public function setByteBuffer($bb)
+ {
+ $this->bb = $bb;
+ }
+
+ /**
+ * returns actual vtable offset
+ *
+ * @param $vtable_offset
+ * @return int offset > 0 means exist value. 0 means not exist
+ */
+ protected function __offset($vtable_offset)
+ {
+ $vtable = $this->bb_pos - $this->bb->getInt($this->bb_pos);
+ return $vtable_offset < $this->bb->getShort($vtable) ? $this->bb->getShort($vtable + $vtable_offset) : 0;
+ }
+
+ /**
+ * @param $offset
+ * @return mixed
+ */
+ protected function __indirect($offset)
+ {
+ return $offset + $this->bb->getInt($offset);
+ }
+
+ /**
+ * fetch utf8 encoded string.
+ *
+ * @param $offset
+ * @return string
+ */
+ protected function __string($offset)
+ {
+ $offset += $this->bb->getInt($offset);
+ $len = $this->bb->getInt($offset);
+ $startPos = $offset + Constants::SIZEOF_INT;
+ return substr($this->bb->_buffer, $startPos, $len);
+ }
+
+ /**
+ * @param $offset
+ * @return int
+ */
+ protected function __vector_len($offset)
+ {
+ $offset += $this->bb_pos;
+ $offset += $this->bb->getInt($offset);
+ return $this->bb->getInt($offset);
+ }
+
+ /**
+ * @param $offset
+ * @return int
+ */
+ protected function __vector($offset)
+ {
+ $offset += $this->bb_pos;
+ // data starts after the length
+ return $offset + $this->bb->getInt($offset) + Constants::SIZEOF_INT;
+ }
+
+ protected function __vector_as_bytes($vector_offset, $elem_size=1)
+ {
+ $o = $this->__offset($vector_offset);
+ if ($o == 0) {
+ return null;
+ }
+
+ return substr($this->bb->_buffer, $this->__vector($o), $this->__vector_len($o) * $elem_size);
+ }
+
+ /**
+ * @param Table $table
+ * @param int $offset
+ * @return Table
+ */
+ protected function __union($table, $offset)
+ {
+ $offset += $this->bb_pos;
+ $table->setByteBufferPos($offset + $this->bb->getInt($offset));
+ $table->setByteBuffer($this->bb);
+ return $table;
+ }
+
+ /**
+ * @param ByteBuffer $bb
+ * @param string $ident
+ * @return bool
+ * @throws \ArgumentException
+ */
+ protected static function __has_identifier($bb, $ident)
+ {
+ if (strlen($ident) != Constants::FILE_IDENTIFIER_LENGTH) {
+ throw new \ArgumentException("FlatBuffers: file identifier must be length " . Constants::FILE_IDENTIFIER_LENGTH);
+ }
+
+ for ($i = 0; $i < 4; $i++) {
+ if ($ident[$i] != $bb->get($bb->getPosition() + Constants::SIZEOF_INT + $i)) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+}