/// @file
/// @addtogroup flatbuffers_javascript_api
/// @{
/// @cond FLATBUFFERS_INTERNAL
/**
* @fileoverview
*
* Need to suppress 'global this' error so the Node.js export line doesn't cause
* closure compile to error out.
* @suppress {globalThis}
*/
/**
* @const
* @namespace
*/
var flatbuffers = {};
/**
* @typedef {number}
*/
flatbuffers.Offset;
/**
* @typedef {{
* bb: flatbuffers.ByteBuffer,
* bb_pos: number
* }}
*/
flatbuffers.Table;
/**
* @type {number}
* @const
*/
flatbuffers.SIZEOF_SHORT = 2;
/**
* @type {number}
* @const
*/
flatbuffers.SIZEOF_INT = 4;
/**
* @type {number}
* @const
*/
flatbuffers.FILE_IDENTIFIER_LENGTH = 4;
/**
* @enum {number}
*/
flatbuffers.Encoding = {
UTF8_BYTES: 1,
UTF16_STRING: 2
};
/**
* @type {Int32Array}
* @const
*/
flatbuffers.int32 = new Int32Array(2);
/**
* @type {Float32Array}
* @const
*/
flatbuffers.float32 = new Float32Array(flatbuffers.int32.buffer);
/**
* @type {Float64Array}
* @const
*/
flatbuffers.float64 = new Float64Array(flatbuffers.int32.buffer);
/**
* @type {boolean}
* @const
*/
flatbuffers.isLittleEndian = new Uint16Array(new Uint8Array([1, 0]).buffer)[0] === 1;
////////////////////////////////////////////////////////////////////////////////
/**
* @constructor
* @param {number} low
* @param {number} high
*/
flatbuffers.Long = function(low, high) {
/**
* @type {number}
* @const
*/
this.low = low | 0;
/**
* @type {number}
* @const
*/
this.high = high | 0;
};
/**
* @param {number} low
* @param {number} high
* @returns {flatbuffers.Long}
*/
flatbuffers.Long.create = function(low, high) {
// Special-case zero to avoid GC overhead for default values
return low == 0 && high == 0 ? flatbuffers.Long.ZERO : new flatbuffers.Long(low, high);
};
/**
* @returns {number}
*/
flatbuffers.Long.prototype.toFloat64 = function() {
return (this.low >>> 0) + this.high * 0x100000000;
};
/**
* @param {flatbuffers.Long} other
* @returns {boolean}
*/
flatbuffers.Long.prototype.equals = function(other) {
return this.low == other.low && this.high == other.high;
};
/**
* @type {flatbuffers.Long}
* @const
*/
flatbuffers.Long.ZERO = new flatbuffers.Long(0, 0);
/// @endcond
////////////////////////////////////////////////////////////////////////////////
/**
* Create a FlatBufferBuilder.
*
* @constructor
* @param {number=} opt_initial_size
*/
flatbuffers.Builder = function(opt_initial_size) {
if (!opt_initial_size) {
var initial_size = 1024;
} else {
var initial_size = opt_initial_size;
}
/**
* @type {flatbuffers.ByteBuffer}
* @private
*/
this.bb = flatbuffers.ByteBuffer.allocate(initial_size);
/**
* Remaining space in the ByteBuffer.
*
* @type {number}
* @private
*/
this.space = initial_size;
/**
* Minimum alignment encountered so far.
*
* @type {number}
* @private
*/
this.minalign = 1;
/**
* The vtable for the current table.
*
* @type {Array.<number>}
* @private
*/
this.vtable = null;
/**
* The amount of fields we're actually using.
*
* @type {number}
* @private
*/
this.vtable_in_use = 0;
/**
* Whether we are currently serializing a table.
*
* @type {boolean}
* @private
*/
this.isNested = false;
/**
* Starting offset of the current struct/table.
*
* @type {number}
* @private
*/
this.object_start = 0;
/**
* List of offsets of all vtables.
*
* @type {Array.<number>}
* @private
*/
this.vtables = [];
/**
* For the current vector being built.
*
* @type {number}
* @private
*/
this.vector_num_elems = 0;
/**
* False omits default values from the serialized data
*
* @type {boolean}
* @private
*/
this.force_defaults = false;
};
flatbuffers.Builder.prototype.clear = function() {
this.bb.clear();
this.space = this.bb.capacity();
this.minalign = 1;
this.vtable = null;
this.vtable_in_use = 0;
this.isNested = false;
this.object_start = 0;
this.vtables = [];
this.vector_num_elems = 0;
this.force_defaults = false;
};
/**
* In order to save space, fields that are set to their default value
* don't get serialized into the buffer. Forcing defaults provides a
* way to manually disable this optimization.
*
* @param {boolean} forceDefaults true always serializes default values
*/
flatbuffers.Builder.prototype.forceDefaults = function(forceDefaults) {
this.force_defaults = forceDefaults;
};
/**
* Get the ByteBuffer representing the FlatBuffer. Only call this after you've
* called finish(). The actual data starts at the ByteBuffer's current position,
* not necessarily at 0.
*
* @returns {flatbuffers.ByteBuffer}
*/
flatbuffers.Builder.prototype.dataBuffer = function() {
return this.bb;
};
/**
* Get the bytes representing the FlatBuffer. Only call this after you've
* called finish().
*
* @returns {Uint8Array}
*/
flatbuffers.Builder.prototype.asUint8Array = function() {
return this.bb.bytes().subarray(this.bb.position(), this.bb.position() + this.offset());
};
/// @cond FLATBUFFERS_INTERNAL
/**
* Prepare to write an element of `size` after `additional_bytes` have been
* written, e.g. if you write a string, you need to align such the int length
* field is aligned to 4 bytes, and the string data follows it directly. If all
* you need to do is alignment, `additional_bytes` will be 0.
*
* @param {number} size This is the of the new element to write
* @param {number} additional_bytes The padding size
*/
flatbuffers.Builder.prototype.prep = function(size, additional_bytes) {
// Track the biggest thing we've ever aligned to.
if (size > this.minalign) {
this.minalign = size;
}
// Find the amount of alignment needed such that `size` is properly
// aligned after `additional_bytes`
var align_size = ((~(this.bb.capacity() - this.space + additional_bytes)) + 1) & (size - 1);
// Reallocate the buffer if needed.
while (this.space < align_size + size + additional_bytes) {
var old_buf_size = this.bb.capacity();
this.bb = flatbuffers.Builder.growByteBuffer(this.bb);
this.space += this.bb.capacity() - old_buf_size;
}
this.pad(align_size);
};
/**
* @param {number} byte_size
*/
flatbuffers.Builder.prototype.pad = function(byte_size) {
for (var i = 0; i < byte_size; i++) {
this.bb.writeInt8(--this.space, 0);
}
};
/**
* @param {number} value
*/
flatbuffers.Builder.prototype.writeInt8 = function(value) {
this.bb.writeInt8(this.space -= 1, value);
};
/**
* @param {number} value
*/
flatbuffers.Builder.prototype.writeInt16 = function(value) {
this.bb.writeInt16(this.space -= 2, value);
};
/**
* @param {number} value
*/
flatbuffers.Builder.prototype.writeInt32 = function(value) {
this.bb.writeInt32(this.space -= 4, value);
};
/**
* @param {flatbuffers.Long} value
*/
flatbuffers.Builder.prototype.writeInt64 = function(value) {
this.bb.writeInt64(this.space -= 8, value);
};
/**
* @param {number} value
*/
flatbuffers.Builder.prototype.writeFloat32 = function(value) {
this.bb.writeFloat32(this.space -= 4, value);
};
/**
* @param {number} value
*/
flatbuffers.Builder.prototype.writeFloat64 = function(value) {
this.bb.writeFloat64(this.space -= 8, value);
};
/// @endcond
/**
* Add an `int8` to the buffer, properly aligned, and grows the buffer (if necessary).
* @param {number} value The `int8` to add the the buffer.
*/
flatbuffers.Builder.prototype.addInt8 = function(value) {
this.prep(1, 0);
this.writeInt8(value);
};
/**
* Add an `int16` to the buffer, properly aligned, and grows the buffer (if necessary).
* @param {number} value The `int16` to add the the buffer.
*/
flatbuffers.Builder.prototype.addInt16 = function(value) {
this.prep(2, 0);
this.writeInt16(value);
};
/**
* Add an `int32` to the buffer, properly aligned, and grows the buffer (if necessary).
* @param {number} value The `int32` to add the the buffer.
*/
flatbuffers.Builder.prototype.addInt32 = function(value) {
this.prep(4, 0);
this.writeInt32(value);
};
/**
* Add an `int64` to the buffer, properly aligned, and grows the buffer (if necessary).
* @param {flatbuffers.Long} value The `int64` to add the the buffer.
*/
flatbuffers.Builder.prototype.addInt64 = function(value) {
this.prep(8, 0);
this.writeInt64(value);
};
/**
* Add a `float32` to the buffer, properly aligned, and grows the buffer (if necessary).
* @param {number} value The `float32` to add the the buffer.
*/
flatbuffers.Builder.prototype.addFloat32 = function(value) {
this.prep(4, 0);
this.writeFloat32(value);
};
/**
* Add a `float64` to the buffer, properly aligned, and grows the buffer (if necessary).
* @param {number} value The `float64` to add the the buffer.
*/
flatbuffers.Builder.prototype.addFloat64 = function(value) {
this.prep(8, 0);
this.writeFloat64(value);
};
/// @cond FLATBUFFERS_INTERNAL
/**
* @param {number} voffset
* @param {number} value
* @param {number} defaultValue
*/
flatbuffers.Builder.prototype.addFieldInt8 = function(voffset, value, defaultValue) {
if (this.force_defaults || value != defaultValue) {
this.addInt8(value);
this.slot(voffset);
}
};
/**
* @param {number} voffset
* @param {number} value
* @param {number} defaultValue
*/
flatbuffers.Builder.prototype.addFieldInt16 = function(voffset, value, defaultValue) {
if (this.force_defaults || value != defaultValue) {
this.addInt16(value);
this.slot(voffset);
}
};
/**
* @param {number} voffset
* @param {number} value
* @param {number} defaultValue
*/
flatbuffers.Builder.prototype.addFieldInt32 = function(voffset, value, defaultValue) {
if (this.force_defaults || value != defaultValue) {
this.addInt32(value);
this.slot(voffset);
}
};
/**
* @param {number} voffset
* @param {flatbuffers.Long} value
* @param {flatbuffers.Long} defaultValue
*/
flatbuffers.Builder.prototype.addFieldInt64 = function(voffset, value, defaultValue) {
if (this.force_defaults || !value.equals(defaultValue)) {
this.addInt64(value);
this.slot(voffset);
}
};
/**
* @param {number} voffset
* @param {number} value
* @param {number} defaultValue
*/
flatbuffers.Builder.prototype.addFieldFloat32 = function(voffset, value, defaultValue) {
if (this.force_defaults || value != defaultValue) {
this.addFloat32(value);
this.slot(voffset);
}
};
/**
* @param {number} voffset
* @param {number} value
* @param {number} defaultValue
*/
flatbuffers.Builder.prototype.addFieldFloat64 = function(voffset, value, defaultValue) {
if (this.force_defaults || value != defaultValue) {
this.addFloat64(value);
this.slot(voffset);
}
};
/**
* @param {number} voffset
* @param {flatbuffers.Offset} value
* @param {flatbuffers.Offset} defaultValue
*/
flatbuffers.Builder.prototype.addFieldOffset = function(voffset, value, defaultValue) {
if (this.force_defaults || value != defaultValue) {
this.addOffset(value);
this.slot(voffset);
}
};
/**
* Structs are stored inline, so nothing additional is being added. `d` is always 0.
*
* @param {number} voffset
* @param {flatbuffers.Offset} value
* @param {flatbuffers.Offset} defaultValue
*/
flatbuffers.Builder.prototype.addFieldStruct = function(voffset, value, defaultValue) {
if (value != defaultValue) {
this.nested(value);
this.slot(voffset);
}
};
/**
* Structures are always stored inline, they need to be created right
* where they're used. You'll get this assertion failure if you
* created it elsewhere.
*
* @param {flatbuffers.Offset} obj The offset of the created object
*/
flatbuffers.Builder.prototype.nested = function(obj) {
if (obj != this.offset()) {
throw new Error('FlatBuffers: struct must be serialized inline.');
}
};
/**
* Should not be creating any other object, string or vector
* while an object is being constructed
*/
flatbuffers.Builder.prototype.notNested = function() {
if (this.isNested) {
throw new Error('FlatBuffers: object serialization must not be nested.');
}
};
/**
* Set the current vtable at `voffset` to the current location in the buffer.
*
* @param {number} voffset
*/
flatbuffers.Builder.prototype.slot = function(voffset) {
this.vtable[voffset] = this.offset();
};
/**
* @returns {flatbuffers.Offset} Offset relative to the end of the buffer.
*/
flatbuffers.Builder.prototype.offset = function() {
return this.bb.capacity() - this.space;
};
/**
* Doubles the size of the backing ByteBuffer and copies the old data towards
* the end of the new buffer (since we build the buffer backwards).
*
* @param {flatbuffers.ByteBuffer} bb The current buffer with the existing data
* @returns {flatbuffers.ByteBuffer} A new byte buffer with the old data copied
* to it. The data is located at the end of the buffer.
*
* uint8Array.set() formally takes {Array<number>|ArrayBufferView}, so to pass
* it a uint8Array we need to suppress the type check:
* @suppress {checkTypes}
*/
flatbuffers.Builder.growByteBuffer = function(bb) {
var old_buf_size = bb.capacity();
// Ensure we don't grow beyond what fits in an int.
if (old_buf_size & 0xC0000000) {
throw new Error('FlatBuffers: cannot grow buffer beyond 2 gigabytes.');
}
var new_buf_size = old_buf_size << 1;
var nbb = flatbuffers.ByteBuffer.allocate(new_buf_size);
nbb.setPosition(new_buf_size - old_buf_size);
nbb.bytes().set(bb.bytes(), new_buf_size - old_buf_size);
return nbb;
};
/// @endcond
/**
* Adds on offset, relative to where it will be written.
*
* @param {flatbuffers.Offset} offset The offset to add.
*/
flatbuffers.Builder.prototype.addOffset = function(offset) {
this.prep(flatbuffers.SIZEOF_INT, 0); // Ensure alignment is already done.
this.writeInt32(this.offset() - offset + flatbuffers.SIZEOF_INT);
};
/// @cond FLATBUFFERS_INTERNAL
/**
* Start encoding a new object in the buffer. Users will not usually need to
* call this directly. The FlatBuffers compiler will generate helper methods
* that call this method internally.
*
* @param {number} numfields
*/
flatbuffers.Builder.prototype.startObject = function(numfields) {
this.notNested();
if (this.vtable == null) {
this.vtable = [];
}
this.vtable_in_use = numfields;
for (var i = 0; i < numfields; i++) {
this.vtable[i] = 0; // This will push additional elements as needed
}
this.isNested = true;
this.object_start = this.offset();
};
/**
* Finish off writing the object that is under construction.
*
* @returns {flatbuffers.Offset} The offset to the object inside `dataBuffer`
*/
flatbuffers.Builder.prototype.endObject = function() {
if (this.vtable == null || !this.isNested) {
throw new Error('FlatBuffers: endObject called without startObject');
}
this.addInt32(0);
var vtableloc = this.offset();
// Trim trailing zeroes.
var i = this.vtable_in_use - 1;
for (; i >= 0 && this.vtable[i] == 0; i--) {}
var trimmed_size = i + 1;
// Write out the current vtable.
for (; i >= 0; i--) {
// Offset relative to the start of the table.
this.addInt16(this.vtable[i] != 0 ? vtableloc - this.vtable[i] : 0);
}
var standard_fields = 2; // The fields below:
this.addInt16(vtableloc - this.object_start);
var len = (trimmed_size + standard_fields) * flatbuffers.SIZEOF_SHORT;
this.addInt16(len);
// Search for an existing vtable that matches the current one.
var existing_vtable = 0;
var vt1 = this.space;
outer_loop:
for (i = 0; i < this.vtables.length; i++) {
var vt2 = this.bb.capacity() - this.vtables[i];
if (len == this.bb.readInt16(vt2)) {
for (var j = flatbuffers.SIZEOF_SHORT; j < len; j += flatbuffers.SIZEOF_SHORT) {
if (this.bb.readInt16(vt1 + j) != this.bb.readInt16(vt2 + j)) {
continue outer_loop;
}
}
existing_vtable = this.vtables[i];
break;
}
}
if (existing_vtable) {
// Found a match:
// Remove the current vtable.
this.space = this.bb.capacity() - vtableloc;
// Point table to existing vtable.
this.bb.writeInt32(this.space, existing_vtable - vtableloc);
} else {
// No match:
// Add the location of the current vtable to the list of vtables.
this.vtables.push(this.offset());
// Point table to current vtable.
this.bb.writeInt32(this.bb.capacity() - vtableloc, this.offset() - vtableloc);
}
this.isNested = false;
return vtableloc;
};
/// @endcond
/**
* Finalize a buffer, poiting to the given `root_table`.
*
* @param {flatbuffers.Offset} root_table
* @param {string=} opt_file_identifier
*/
flatbuffers.Builder.prototype.finish = function(root_table, opt_file_identifier) {
if (opt_file_identifier) {
var file_identifier = opt_file_identifier;
this.prep(this.minalign, flatbuffers.SIZEOF_INT +
flatbuffers.FILE_IDENTIFIER_LENGTH);
if (file_identifier.length != flatbuffers.FILE_IDENTIFIER_LENGTH) {
throw new Error('FlatBuffers: file identifier must be length ' +
flatbuffers.FILE_IDENTIFIER_LENGTH);
}
for (var i = flatbuffers.FILE_IDENTIFIER_LENGTH - 1; i >= 0; i--) {
this.writeInt8(file_identifier.charCodeAt(i));
}
}
this.prep(this.minalign, flatbuffers.SIZEOF_INT);
this.addOffset(root_table);
this.bb.setPosition(this.space);
};
/// @cond FLATBUFFERS_INTERNAL
/**
* This checks a required field has been set in a given table that has
* just been constructed.
*
* @param {flatbuffers.Offset} table
* @param {number} field
*/
flatbuffers.Builder.prototype.requiredField = function(table, field) {
var table_start = this.bb.capacity() - table;
var vtable_start = table_start - this.bb.readInt32(table_start);
var ok = this.bb.readInt16(vtable_start + field) != 0;
// If this fails, the caller will show what field needs to be set.
if (!ok) {
throw new Error('FlatBuffers: field ' + field + ' must be set');
}
};
/**
* Start a new array/vector of objects. Users usually will not call
* this directly. The FlatBuffers compiler will create a start/end
* method for vector types in generated code.
*
* @param {number} elem_size The size of each element in the array
* @param {number} num_elems The number of elements in the array
* @param {number} alignment The alignment of the array
*/
flatbuffers.Builder.prototype.startVector = function(elem_size, num_elems, alignment) {
this.notNested();
this.vector_num_elems = num_elems;
this.prep(flatbuffers.SIZEOF_INT, elem_size * num_elems);
this.prep(alignment, elem_size * num_elems); // Just in case alignment > int.
};
/**
* Finish off the creation of an array and all its elements. The array must be
* created with `startVector`.
*
* @returns {flatbuffers.Offset} The offset at which the newly created array
* starts.
*/
flatbuffers.Builder.prototype.endVector = function() {
this.writeInt32(this.vector_num_elems);
return this.offset();
};
/// @endcond
/**
* Encode the string `s` in the buffer using UTF-8. If a Uint8Array is passed
* instead of a string, it is assumed to contain valid UTF-8 encoded data.
*
* @param {string|Uint8Array} s The string to encode
* @return {flatbuffers.Offset} The offset in the buffer where the encoded string starts
*/
flatbuffers.Builder.prototype.createString = function(s) {
if (s instanceof Uint8Array) {
var utf8 = s;
} else {
var utf8 = [];
var i = 0;
while (i < s.length) {
var codePoint;
// Decode UTF-16
var a = s.charCodeAt(i++);
if (a < 0xD800 || a >= 0xDC00) {
codePoint = a;
} else {
var b = s.charCodeAt(i++);
codePoint = (a << 10) + b + (0x10000 - (0xD800 << 10) - 0xDC00);
}
// Encode UTF-8
if (codePoint < 0x80) {
utf8.push(codePoint);
} else {
if (codePoint < 0x800) {
utf8.push(((codePoint >> 6) & 0x1F) | 0xC0);
} else {
if (codePoint < 0x10000) {
utf8.push(((codePoint >> 12) & 0x0F) | 0xE0);
} else {
utf8.push(
((codePoint >> 18) & 0x07) | 0xF0,
((codePoint >> 12) & 0x3F) | 0x80);
}
utf8.push(((codePoint >> 6) & 0x3F) | 0x80);
}
utf8.push((codePoint & 0x3F) | 0x80);
}
}
}
this.addInt8(0);
this.startVector(1, utf8.length, 1);
this.bb.setPosition(this.space -= utf8.length);
for (var i = 0, offset = this.space, bytes = this.bb.bytes(); i < utf8.length; i++) {
bytes[offset++] = utf8[i];
}
return this.endVector();
};
/**
* A helper function to avoid generated code depending on this file directly.
*
* @param {number} low
* @param {number} high
* @returns {flatbuffers.Long}
*/
flatbuffers.Builder.prototype.createLong = function(low, high) {
return flatbuffers.Long.create(low, high);
};
////////////////////////////////////////////////////////////////////////////////
/// @cond FLATBUFFERS_INTERNAL
/**
* Create a new ByteBuffer with a given array of bytes (`Uint8Array`).
*
* @constructor
* @param {Uint8Array} bytes
*/
flatbuffers.ByteBuffer = function(bytes) {
/**
* @type {Uint8Array}
* @private
*/
this.bytes_ = bytes;
/**
* @type {number}
* @private
*/
this.position_ = 0;
};
/**
* Create and allocate a new ByteBuffer with a given size.
*
* @param {number} byte_size
* @returns {flatbuffers.ByteBuffer}
*/
flatbuffers.ByteBuffer.allocate = function(byte_size) {
return new flatbuffers.ByteBuffer(new Uint8Array(byte_size));
};
flatbuffers.ByteBuffer.prototype.clear = function() {
this.position_ = 0;
};
/**
* Get the underlying `Uint8Array`.
*
* @returns {Uint8Array}
*/
flatbuffers.ByteBuffer.prototype.bytes = function() {
return this.bytes_;
};
/**
* Get the buffer's position.
*
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.position = function() {
return this.position_;
};
/**
* Set the buffer's position.
*
* @param {number} position
*/
flatbuffers.ByteBuffer.prototype.setPosition = function(position) {
this.position_ = position;
};
/**
* Get the buffer's capacity.
*
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.capacity = function() {
return this.bytes_.length;
};
/**
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.readInt8 = function(offset) {
return this.readUint8(offset) << 24 >> 24;
};
/**
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.readUint8 = function(offset) {
return this.bytes_[offset];
};
/**
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.readInt16 = function(offset) {
return this.readUint16(offset) << 16 >> 16;
};
/**
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.readUint16 = function(offset) {
return this.bytes_[offset] | this.bytes_[offset + 1] << 8;
};
/**
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.readInt32 = function(offset) {
return this.bytes_[offset] | this.bytes_[offset + 1] << 8 | this.bytes_[offset + 2] << 16 | this.bytes_[offset + 3] << 24;
};
/**
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.readUint32 = function(offset) {
return this.readInt32(offset) >>> 0;
};
/**
* @param {number} offset
* @returns {flatbuffers.Long}
*/
flatbuffers.ByteBuffer.prototype.readInt64 = function(offset) {
return new flatbuffers.Long(this.readInt32(offset), this.readInt32(offset + 4));
};
/**
* @param {number} offset
* @returns {flatbuffers.Long}
*/
flatbuffers.ByteBuffer.prototype.readUint64 = function(offset) {
return new flatbuffers.Long(this.readUint32(offset), this.readUint32(offset + 4));
};
/**
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.readFloat32 = function(offset) {
flatbuffers.int32[0] = this.readInt32(offset);
return flatbuffers.float32[0];
};
/**
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.readFloat64 = function(offset) {
flatbuffers.int32[flatbuffers.isLittleEndian ? 0 : 1] = this.readInt32(offset);
flatbuffers.int32[flatbuffers.isLittleEndian ? 1 : 0] = this.readInt32(offset + 4);
return flatbuffers.float64[0];
};
/**
* @param {number} offset
* @param {number|boolean} value
*/
flatbuffers.ByteBuffer.prototype.writeInt8 = function(offset, value) {
this.bytes_[offset] = /** @type {number} */(value);
};
/**
* @param {number} offset
* @param {number} value
*/
flatbuffers.ByteBuffer.prototype.writeUint8 = function(offset, value) {
this.bytes_[offset] = value;
};
/**
* @param {number} offset
* @param {number} value
*/
flatbuffers.ByteBuffer.prototype.writeInt16 = function(offset, value) {
this.bytes_[offset] = value;
this.bytes_[offset + 1] = value >> 8;
};
/**
* @param {number} offset
* @param {number} value
*/
flatbuffers.ByteBuffer.prototype.writeUint16 = function(offset, value) {
this.bytes_[offset] = value;
this.bytes_[offset + 1] = value >> 8;
};
/**
* @param {number} offset
* @param {number} value
*/
flatbuffers.ByteBuffer.prototype.writeInt32 = function(offset, value) {
this.bytes_[offset] = value;
this.bytes_[offset + 1] = value >> 8;
this.bytes_[offset + 2] = value >> 16;
this.bytes_[offset + 3] = value >> 24;
};
/**
* @param {number} offset
* @param {number} value
*/
flatbuffers.ByteBuffer.prototype.writeUint32 = function(offset, value) {
this.bytes_[offset] = value;
this.bytes_[offset + 1] = value >> 8;
this.bytes_[offset + 2] = value >> 16;
this.bytes_[offset + 3] = value >> 24;
};
/**
* @param {number} offset
* @param {flatbuffers.Long} value
*/
flatbuffers.ByteBuffer.prototype.writeInt64 = function(offset, value) {
this.writeInt32(offset, value.low);
this.writeInt32(offset + 4, value.high);
};
/**
* @param {number} offset
* @param {flatbuffers.Long} value
*/
flatbuffers.ByteBuffer.prototype.writeUint64 = function(offset, value) {
this.writeUint32(offset, value.low);
this.writeUint32(offset + 4, value.high);
};
/**
* @param {number} offset
* @param {number} value
*/
flatbuffers.ByteBuffer.prototype.writeFloat32 = function(offset, value) {
flatbuffers.float32[0] = value;
this.writeInt32(offset, flatbuffers.int32[0]);
};
/**
* @param {number} offset
* @param {number} value
*/
flatbuffers.ByteBuffer.prototype.writeFloat64 = function(offset, value) {
flatbuffers.float64[0] = value;
this.writeInt32(offset, flatbuffers.int32[flatbuffers.isLittleEndian ? 0 : 1]);
this.writeInt32(offset + 4, flatbuffers.int32[flatbuffers.isLittleEndian ? 1 : 0]);
};
/**
* Return the file identifier. Behavior is undefined for FlatBuffers whose
* schema does not include a file_identifier (likely points at padding or the
* start of a the root vtable).
* @returns {string}
*/
flatbuffers.ByteBuffer.prototype.getBufferIdentifier = function() {
if (this.bytes_.length < this.position_ + flatbuffers.SIZEOF_INT +
flatbuffers.FILE_IDENTIFIER_LENGTH) {
throw new Error(
'FlatBuffers: ByteBuffer is too short to contain an identifier.');
}
var result = "";
for (var i = 0; i < flatbuffers.FILE_IDENTIFIER_LENGTH; i++) {
result += String.fromCharCode(
this.readInt8(this.position_ + flatbuffers.SIZEOF_INT + i));
}
return result;
};
/**
* Look up a field in the vtable, return an offset into the object, or 0 if the
* field is not present.
*
* @param {number} bb_pos
* @param {number} vtable_offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.__offset = function(bb_pos, vtable_offset) {
var vtable = bb_pos - this.readInt32(bb_pos);
return vtable_offset < this.readInt16(vtable) ? this.readInt16(vtable + vtable_offset) : 0;
};
/**
* Initialize any Table-derived type to point to the union at the given offset.
*
* @param {flatbuffers.Table} t
* @param {number} offset
* @returns {flatbuffers.Table}
*/
flatbuffers.ByteBuffer.prototype.__union = function(t, offset) {
t.bb_pos = offset + this.readInt32(offset);
t.bb = this;
return t;
};
/**
* Create a JavaScript string from UTF-8 data stored inside the FlatBuffer.
* This allocates a new string and converts to wide chars upon each access.
*
* To avoid the conversion to UTF-16, pass flatbuffers.Encoding.UTF8_BYTES as
* the "optionalEncoding" argument. This is useful for avoiding conversion to
* and from UTF-16 when the data will just be packaged back up in another
* FlatBuffer later on.
*
* @param {number} offset
* @param {flatbuffers.Encoding=} opt_encoding Defaults to UTF16_STRING
* @returns {string|Uint8Array}
*/
flatbuffers.ByteBuffer.prototype.__string = function(offset, opt_encoding) {
offset += this.readInt32(offset);
var length = this.readInt32(offset);
var result = '';
var i = 0;
offset += flatbuffers.SIZEOF_INT;
if (opt_encoding === flatbuffers.Encoding.UTF8_BYTES) {
return this.bytes_.subarray(offset, offset + length);
}
while (i < length) {
var codePoint;
// Decode UTF-8
var a = this.readUint8(offset + i++);
if (a < 0xC0) {
codePoint = a;
} else {
var b = this.readUint8(offset + i++);
if (a < 0xE0) {
codePoint =
((a & 0x1F) << 6) |
(b & 0x3F);
} else {
var c = this.readUint8(offset + i++);
if (a < 0xF0) {
codePoint =
((a & 0x0F) << 12) |
((b & 0x3F) << 6) |
(c & 0x3F);
} else {
var d = this.readUint8(offset + i++);
codePoint =
((a & 0x07) << 18) |
((b & 0x3F) << 12) |
((c & 0x3F) << 6) |
(d & 0x3F);
}
}
}
// Encode UTF-16
if (codePoint < 0x10000) {
result += String.fromCharCode(codePoint);
} else {
codePoint -= 0x10000;
result += String.fromCharCode(
(codePoint >> 10) + 0xD800,
(codePoint & ((1 << 10) - 1)) + 0xDC00);
}
}
return result;
};
/**
* Retrieve the relative offset stored at "offset"
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.__indirect = function(offset) {
return offset + this.readInt32(offset);
};
/**
* Get the start of data of a vector whose offset is stored at "offset" in this object.
*
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.__vector = function(offset) {
return offset + this.readInt32(offset) + flatbuffers.SIZEOF_INT; // data starts after the length
};
/**
* Get the length of a vector whose offset is stored at "offset" in this object.
*
* @param {number} offset
* @returns {number}
*/
flatbuffers.ByteBuffer.prototype.__vector_len = function(offset) {
return this.readInt32(offset + this.readInt32(offset));
};
/**
* @param {string} ident
* @returns {boolean}
*/
flatbuffers.ByteBuffer.prototype.__has_identifier = function(ident) {
if (ident.length != flatbuffers.FILE_IDENTIFIER_LENGTH) {
throw new Error('FlatBuffers: file identifier must be length ' +
flatbuffers.FILE_IDENTIFIER_LENGTH);
}
for (var i = 0; i < flatbuffers.FILE_IDENTIFIER_LENGTH; i++) {
if (ident.charCodeAt(i) != this.readInt8(this.position_ + flatbuffers.SIZEOF_INT + i)) {
return false;
}
}
return true;
};
/**
* A helper function to avoid generated code depending on this file directly.
*
* @param {number} low
* @param {number} high
* @returns {flatbuffers.Long}
*/
flatbuffers.ByteBuffer.prototype.createLong = function(low, high) {
return flatbuffers.Long.create(low, high);
};
// Exports for Node.js and RequireJS
this.flatbuffers = flatbuffers;
/// @endcond
/// @}