Flatbuffers Merge commit '8cd6f0538a362ceefbcfcbf6c7b8b3f341d1fb41' into master
Upgrade flatbuffers to the latest.
Change-Id: I901787ac6fc5d7ce2c4019cc0d275de68086b4d8
diff --git a/third_party/flatbuffers/js/flexbuffers/builder.js b/third_party/flatbuffers/js/flexbuffers/builder.js
new file mode 100644
index 0000000..3243417
--- /dev/null
+++ b/third_party/flatbuffers/js/flexbuffers/builder.js
@@ -0,0 +1,541 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Builder = void 0;
+var bit_width_1 = require("./bit-width");
+var bit_width_util_1 = require("./bit-width-util");
+var flexbuffers_util_1 = require("./flexbuffers-util");
+var value_type_1 = require("./value-type");
+var value_type_util_1 = require("./value-type-util");
+var stack_value_1 = require("./stack-value");
+var Builder = /** @class */ (function () {
+ function Builder(size, dedupStrings, dedupKeys, dedupKeyVectors) {
+ if (size === void 0) { size = 2048; }
+ if (dedupStrings === void 0) { dedupStrings = true; }
+ if (dedupKeys === void 0) { dedupKeys = true; }
+ if (dedupKeyVectors === void 0) { dedupKeyVectors = true; }
+ this.dedupStrings = dedupStrings;
+ this.dedupKeys = dedupKeys;
+ this.dedupKeyVectors = dedupKeyVectors;
+ this.stack = [];
+ this.stackPointers = [];
+ this.offset = 0;
+ this.finished = false;
+ this.stringLookup = {};
+ this.keyLookup = {};
+ this.keyVectorLookup = {};
+ this.indirectIntLookup = {};
+ this.indirectUIntLookup = {};
+ this.indirectFloatLookup = {};
+ this.buffer = new ArrayBuffer(size > 0 ? size : 2048);
+ this.view = new DataView(this.buffer);
+ }
+ Builder.prototype.align = function (width) {
+ var byteWidth = bit_width_util_1.toByteWidth(width);
+ this.offset += bit_width_util_1.paddingSize(this.offset, byteWidth);
+ return byteWidth;
+ };
+ Builder.prototype.computeOffset = function (newValueSize) {
+ var targetOffset = this.offset + newValueSize;
+ var size = this.buffer.byteLength;
+ var prevSize = size;
+ while (size < targetOffset) {
+ size <<= 1;
+ }
+ if (prevSize < size) {
+ var prevBuffer = this.buffer;
+ this.buffer = new ArrayBuffer(size);
+ this.view = new DataView(this.buffer);
+ new Uint8Array(this.buffer).set(new Uint8Array(prevBuffer), 0);
+ }
+ return targetOffset;
+ };
+ Builder.prototype.pushInt = function (value, width) {
+ if (width === bit_width_1.BitWidth.WIDTH8) {
+ this.view.setInt8(this.offset, value);
+ }
+ else if (width === bit_width_1.BitWidth.WIDTH16) {
+ this.view.setInt16(this.offset, value, true);
+ }
+ else if (width === bit_width_1.BitWidth.WIDTH32) {
+ this.view.setInt32(this.offset, value, true);
+ }
+ else if (width === bit_width_1.BitWidth.WIDTH64) {
+ this.view.setBigInt64(this.offset, BigInt(value), true);
+ }
+ else {
+ throw "Unexpected width: " + width + " for value: " + value;
+ }
+ };
+ Builder.prototype.pushUInt = function (value, width) {
+ if (width === bit_width_1.BitWidth.WIDTH8) {
+ this.view.setUint8(this.offset, value);
+ }
+ else if (width === bit_width_1.BitWidth.WIDTH16) {
+ this.view.setUint16(this.offset, value, true);
+ }
+ else if (width === bit_width_1.BitWidth.WIDTH32) {
+ this.view.setUint32(this.offset, value, true);
+ }
+ else if (width === bit_width_1.BitWidth.WIDTH64) {
+ this.view.setBigUint64(this.offset, BigInt(value), true);
+ }
+ else {
+ throw "Unexpected width: " + width + " for value: " + value;
+ }
+ };
+ Builder.prototype.writeInt = function (value, byteWidth) {
+ var newOffset = this.computeOffset(byteWidth);
+ this.pushInt(value, bit_width_util_1.fromByteWidth(byteWidth));
+ this.offset = newOffset;
+ };
+ Builder.prototype.writeUInt = function (value, byteWidth) {
+ var newOffset = this.computeOffset(byteWidth);
+ this.pushUInt(value, bit_width_util_1.fromByteWidth(byteWidth));
+ this.offset = newOffset;
+ };
+ Builder.prototype.writeBlob = function (arrayBuffer) {
+ var length = arrayBuffer.byteLength;
+ var bitWidth = bit_width_util_1.uwidth(length);
+ var byteWidth = this.align(bitWidth);
+ this.writeUInt(length, byteWidth);
+ var blobOffset = this.offset;
+ var newOffset = this.computeOffset(length);
+ new Uint8Array(this.buffer).set(new Uint8Array(arrayBuffer), blobOffset);
+ this.stack.push(this.offsetStackValue(blobOffset, value_type_1.ValueType.BLOB, bitWidth));
+ this.offset = newOffset;
+ };
+ Builder.prototype.writeString = function (str) {
+ if (this.dedupStrings && Object.prototype.hasOwnProperty.call(this.stringLookup, str)) {
+ this.stack.push(this.stringLookup[str]);
+ return;
+ }
+ var utf8 = flexbuffers_util_1.toUTF8Array(str);
+ var length = utf8.length;
+ var bitWidth = bit_width_util_1.uwidth(length);
+ var byteWidth = this.align(bitWidth);
+ this.writeUInt(length, byteWidth);
+ var stringOffset = this.offset;
+ var newOffset = this.computeOffset(length + 1);
+ new Uint8Array(this.buffer).set(utf8, stringOffset);
+ var stackValue = this.offsetStackValue(stringOffset, value_type_1.ValueType.STRING, bitWidth);
+ this.stack.push(stackValue);
+ if (this.dedupStrings) {
+ this.stringLookup[str] = stackValue;
+ }
+ this.offset = newOffset;
+ };
+ Builder.prototype.writeKey = function (str) {
+ if (this.dedupKeys && Object.prototype.hasOwnProperty.call(this.keyLookup, str)) {
+ this.stack.push(this.keyLookup[str]);
+ return;
+ }
+ var utf8 = flexbuffers_util_1.toUTF8Array(str);
+ var length = utf8.length;
+ var newOffset = this.computeOffset(length + 1);
+ new Uint8Array(this.buffer).set(utf8, this.offset);
+ var stackValue = this.offsetStackValue(this.offset, value_type_1.ValueType.KEY, bit_width_1.BitWidth.WIDTH8);
+ this.stack.push(stackValue);
+ if (this.dedupKeys) {
+ this.keyLookup[str] = stackValue;
+ }
+ this.offset = newOffset;
+ };
+ Builder.prototype.writeStackValue = function (value, byteWidth) {
+ var newOffset = this.computeOffset(byteWidth);
+ if (value.isOffset()) {
+ var relativeOffset = this.offset - value.offset;
+ if (byteWidth === 8 || BigInt(relativeOffset) < (BigInt(1) << BigInt(byteWidth * 8))) {
+ this.writeUInt(relativeOffset, byteWidth);
+ }
+ else {
+ throw "Unexpected size " + byteWidth + ". This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new";
+ }
+ }
+ else {
+ value.writeToBuffer(byteWidth);
+ }
+ this.offset = newOffset;
+ };
+ Builder.prototype.integrityCheckOnValueAddition = function () {
+ if (this.finished) {
+ throw "Adding values after finish is prohibited";
+ }
+ if (this.stackPointers.length !== 0 && this.stackPointers[this.stackPointers.length - 1].isVector === false) {
+ if (this.stack[this.stack.length - 1].type !== value_type_1.ValueType.KEY) {
+ throw "Adding value to a map before adding a key is prohibited";
+ }
+ }
+ };
+ Builder.prototype.integrityCheckOnKeyAddition = function () {
+ if (this.finished) {
+ throw "Adding values after finish is prohibited";
+ }
+ if (this.stackPointers.length === 0 || this.stackPointers[this.stackPointers.length - 1].isVector) {
+ throw "Adding key before starting a map is prohibited";
+ }
+ };
+ Builder.prototype.startVector = function () {
+ this.stackPointers.push({ stackPosition: this.stack.length, isVector: true });
+ };
+ Builder.prototype.startMap = function (presorted) {
+ if (presorted === void 0) { presorted = false; }
+ this.stackPointers.push({ stackPosition: this.stack.length, isVector: false, presorted: presorted });
+ };
+ Builder.prototype.endVector = function (stackPointer) {
+ var vecLength = this.stack.length - stackPointer.stackPosition;
+ var vec = this.createVector(stackPointer.stackPosition, vecLength, 1);
+ this.stack.splice(stackPointer.stackPosition, vecLength);
+ this.stack.push(vec);
+ };
+ Builder.prototype.endMap = function (stackPointer) {
+ if (!stackPointer.presorted) {
+ this.sort(stackPointer);
+ }
+ var keyVectorHash = "";
+ for (var i = stackPointer.stackPosition; i < this.stack.length; i += 2) {
+ keyVectorHash += "," + this.stack[i].offset;
+ }
+ var vecLength = (this.stack.length - stackPointer.stackPosition) >> 1;
+ if (this.dedupKeyVectors && !Object.prototype.hasOwnProperty.call(this.keyVectorLookup, keyVectorHash)) {
+ this.keyVectorLookup[keyVectorHash] = this.createVector(stackPointer.stackPosition, vecLength, 2);
+ }
+ var keysStackValue = this.dedupKeyVectors ? this.keyVectorLookup[keyVectorHash] : this.createVector(stackPointer.stackPosition, vecLength, 2);
+ var valuesStackValue = this.createVector(stackPointer.stackPosition + 1, vecLength, 2, keysStackValue);
+ this.stack.splice(stackPointer.stackPosition, vecLength << 1);
+ this.stack.push(valuesStackValue);
+ };
+ Builder.prototype.sort = function (stackPointer) {
+ var view = this.view;
+ var stack = this.stack;
+ function shouldFlip(v1, v2) {
+ if (v1.type !== value_type_1.ValueType.KEY || v2.type !== value_type_1.ValueType.KEY) {
+ throw "Stack values are not keys " + v1 + " | " + v2 + ". Check if you combined [addKey] with add... method calls properly.";
+ }
+ var c1, c2;
+ var index = 0;
+ do {
+ c1 = view.getUint8(v1.offset + index);
+ c2 = view.getUint8(v2.offset + index);
+ if (c2 < c1)
+ return true;
+ if (c1 < c2)
+ return false;
+ index += 1;
+ } while (c1 !== 0 && c2 !== 0);
+ return false;
+ }
+ function swap(stack, flipIndex, i) {
+ if (flipIndex === i)
+ return;
+ var k = stack[flipIndex];
+ var v = stack[flipIndex + 1];
+ stack[flipIndex] = stack[i];
+ stack[flipIndex + 1] = stack[i + 1];
+ stack[i] = k;
+ stack[i + 1] = v;
+ }
+ function selectionSort() {
+ for (var i = stackPointer.stackPosition; i < stack.length; i += 2) {
+ var flipIndex = i;
+ for (var j = i + 2; j < stack.length; j += 2) {
+ if (shouldFlip(stack[flipIndex], stack[j])) {
+ flipIndex = j;
+ }
+ }
+ if (flipIndex !== i) {
+ swap(stack, flipIndex, i);
+ }
+ }
+ }
+ function smaller(v1, v2) {
+ if (v1.type !== value_type_1.ValueType.KEY || v2.type !== value_type_1.ValueType.KEY) {
+ throw "Stack values are not keys " + v1 + " | " + v2 + ". Check if you combined [addKey] with add... method calls properly.";
+ }
+ if (v1.offset === v2.offset) {
+ return false;
+ }
+ var c1, c2;
+ var index = 0;
+ do {
+ c1 = view.getUint8(v1.offset + index);
+ c2 = view.getUint8(v2.offset + index);
+ if (c1 < c2)
+ return true;
+ if (c2 < c1)
+ return false;
+ index += 1;
+ } while (c1 !== 0 && c2 !== 0);
+ return false;
+ }
+ function quickSort(left, right) {
+ if (left < right) {
+ var mid = left + (((right - left) >> 2)) * 2;
+ var pivot = stack[mid];
+ var left_new = left;
+ var right_new = right;
+ do {
+ while (smaller(stack[left_new], pivot)) {
+ left_new += 2;
+ }
+ while (smaller(pivot, stack[right_new])) {
+ right_new -= 2;
+ }
+ if (left_new <= right_new) {
+ swap(stack, left_new, right_new);
+ left_new += 2;
+ right_new -= 2;
+ }
+ } while (left_new <= right_new);
+ quickSort(left, right_new);
+ quickSort(left_new, right);
+ }
+ }
+ var sorted = true;
+ for (var i = stackPointer.stackPosition; i < this.stack.length - 2; i += 2) {
+ if (shouldFlip(this.stack[i], this.stack[i + 2])) {
+ sorted = false;
+ break;
+ }
+ }
+ if (!sorted) {
+ if (this.stack.length - stackPointer.stackPosition > 40) {
+ quickSort(stackPointer.stackPosition, this.stack.length - 2);
+ }
+ else {
+ selectionSort();
+ }
+ }
+ };
+ Builder.prototype.end = function () {
+ if (this.stackPointers.length < 1)
+ return;
+ var pointer = this.stackPointers.pop();
+ if (pointer.isVector) {
+ this.endVector(pointer);
+ }
+ else {
+ this.endMap(pointer);
+ }
+ };
+ Builder.prototype.createVector = function (start, vecLength, step, keys) {
+ if (keys === void 0) { keys = null; }
+ var bitWidth = bit_width_util_1.uwidth(vecLength);
+ var prefixElements = 1;
+ if (keys !== null) {
+ var elementWidth = keys.elementWidth(this.offset, 0);
+ if (elementWidth > bitWidth) {
+ bitWidth = elementWidth;
+ }
+ prefixElements += 2;
+ }
+ var vectorType = value_type_1.ValueType.KEY;
+ var typed = keys === null;
+ for (var i = start; i < this.stack.length; i += step) {
+ var elementWidth = this.stack[i].elementWidth(this.offset, i + prefixElements);
+ if (elementWidth > bitWidth) {
+ bitWidth = elementWidth;
+ }
+ if (i === start) {
+ vectorType = this.stack[i].type;
+ typed = typed && value_type_util_1.isTypedVectorElement(vectorType);
+ }
+ else {
+ if (vectorType !== this.stack[i].type) {
+ typed = false;
+ }
+ }
+ }
+ var byteWidth = this.align(bitWidth);
+ var fix = typed && value_type_util_1.isNumber(vectorType) && vecLength >= 2 && vecLength <= 4;
+ if (keys !== null) {
+ this.writeStackValue(keys, byteWidth);
+ this.writeUInt(1 << keys.width, byteWidth);
+ }
+ if (!fix) {
+ this.writeUInt(vecLength, byteWidth);
+ }
+ var vecOffset = this.offset;
+ for (var i = start; i < this.stack.length; i += step) {
+ this.writeStackValue(this.stack[i], byteWidth);
+ }
+ if (!typed) {
+ for (var i = start; i < this.stack.length; i += step) {
+ this.writeUInt(this.stack[i].storedPackedType(), 1);
+ }
+ }
+ if (keys !== null) {
+ return this.offsetStackValue(vecOffset, value_type_1.ValueType.MAP, bitWidth);
+ }
+ if (typed) {
+ var vType = value_type_util_1.toTypedVector(vectorType, fix ? vecLength : 0);
+ return this.offsetStackValue(vecOffset, vType, bitWidth);
+ }
+ return this.offsetStackValue(vecOffset, value_type_1.ValueType.VECTOR, bitWidth);
+ };
+ Builder.prototype.nullStackValue = function () {
+ return new stack_value_1.StackValue(this, value_type_1.ValueType.NULL, bit_width_1.BitWidth.WIDTH8);
+ };
+ Builder.prototype.boolStackValue = function (value) {
+ return new stack_value_1.StackValue(this, value_type_1.ValueType.BOOL, bit_width_1.BitWidth.WIDTH8, value);
+ };
+ Builder.prototype.intStackValue = function (value) {
+ return new stack_value_1.StackValue(this, value_type_1.ValueType.INT, bit_width_util_1.iwidth(value), value);
+ };
+ Builder.prototype.uintStackValue = function (value) {
+ return new stack_value_1.StackValue(this, value_type_1.ValueType.UINT, bit_width_util_1.uwidth(value), value);
+ };
+ Builder.prototype.floatStackValue = function (value) {
+ return new stack_value_1.StackValue(this, value_type_1.ValueType.FLOAT, bit_width_util_1.fwidth(value), value);
+ };
+ Builder.prototype.offsetStackValue = function (offset, valueType, bitWidth) {
+ return new stack_value_1.StackValue(this, valueType, bitWidth, null, offset);
+ };
+ Builder.prototype.finishBuffer = function () {
+ if (this.stack.length !== 1) {
+ throw "Stack has to be exactly 1, but it is " + this.stack.length + ". You have to end all started vectors and maps before calling [finish]";
+ }
+ var value = this.stack[0];
+ var byteWidth = this.align(value.elementWidth(this.offset, 0));
+ this.writeStackValue(value, byteWidth);
+ this.writeUInt(value.storedPackedType(), 1);
+ this.writeUInt(byteWidth, 1);
+ this.finished = true;
+ };
+ Builder.prototype.add = function (value) {
+ this.integrityCheckOnValueAddition();
+ if (typeof value === 'undefined') {
+ throw "You need to provide a value";
+ }
+ if (value === null) {
+ this.stack.push(this.nullStackValue());
+ }
+ else if (typeof value === "boolean") {
+ this.stack.push(this.boolStackValue(value));
+ }
+ else if (typeof value === "bigint") {
+ this.stack.push(this.intStackValue(value));
+ }
+ else if (typeof value == 'number') {
+ if (Number.isInteger(value)) {
+ this.stack.push(this.intStackValue(value));
+ }
+ else {
+ this.stack.push(this.floatStackValue(value));
+ }
+ }
+ else if (ArrayBuffer.isView(value)) {
+ this.writeBlob(value.buffer);
+ }
+ else if (typeof value === 'string' || value instanceof String) {
+ this.writeString(value);
+ }
+ else if (Array.isArray(value)) {
+ this.startVector();
+ for (var i = 0; i < value.length; i++) {
+ this.add(value[i]);
+ }
+ this.end();
+ }
+ else if (typeof value === 'object') {
+ var properties = Object.getOwnPropertyNames(value).sort();
+ this.startMap(true);
+ for (var i = 0; i < properties.length; i++) {
+ var key = properties[i];
+ this.addKey(key);
+ this.add(value[key]);
+ }
+ this.end();
+ }
+ else {
+ throw "Unexpected value input " + value;
+ }
+ };
+ Builder.prototype.finish = function () {
+ if (!this.finished) {
+ this.finishBuffer();
+ }
+ var result = this.buffer.slice(0, this.offset);
+ return new Uint8Array(result);
+ };
+ Builder.prototype.isFinished = function () {
+ return this.finished;
+ };
+ Builder.prototype.addKey = function (key) {
+ this.integrityCheckOnKeyAddition();
+ this.writeKey(key);
+ };
+ Builder.prototype.addInt = function (value, indirect, deduplicate) {
+ if (indirect === void 0) { indirect = false; }
+ if (deduplicate === void 0) { deduplicate = false; }
+ this.integrityCheckOnValueAddition();
+ if (!indirect) {
+ this.stack.push(this.intStackValue(value));
+ return;
+ }
+ if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectIntLookup, value)) {
+ this.stack.push(this.indirectIntLookup[value]);
+ return;
+ }
+ var stackValue = this.intStackValue(value);
+ var byteWidth = this.align(stackValue.width);
+ var newOffset = this.computeOffset(byteWidth);
+ var valueOffset = this.offset;
+ stackValue.writeToBuffer(byteWidth);
+ var stackOffset = this.offsetStackValue(valueOffset, value_type_1.ValueType.INDIRECT_INT, stackValue.width);
+ this.stack.push(stackOffset);
+ this.offset = newOffset;
+ if (deduplicate) {
+ this.indirectIntLookup[value] = stackOffset;
+ }
+ };
+ Builder.prototype.addUInt = function (value, indirect, deduplicate) {
+ if (indirect === void 0) { indirect = false; }
+ if (deduplicate === void 0) { deduplicate = false; }
+ this.integrityCheckOnValueAddition();
+ if (!indirect) {
+ this.stack.push(this.uintStackValue(value));
+ return;
+ }
+ if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectUIntLookup, value)) {
+ this.stack.push(this.indirectUIntLookup[value]);
+ return;
+ }
+ var stackValue = this.uintStackValue(value);
+ var byteWidth = this.align(stackValue.width);
+ var newOffset = this.computeOffset(byteWidth);
+ var valueOffset = this.offset;
+ stackValue.writeToBuffer(byteWidth);
+ var stackOffset = this.offsetStackValue(valueOffset, value_type_1.ValueType.INDIRECT_UINT, stackValue.width);
+ this.stack.push(stackOffset);
+ this.offset = newOffset;
+ if (deduplicate) {
+ this.indirectUIntLookup[value] = stackOffset;
+ }
+ };
+ Builder.prototype.addFloat = function (value, indirect, deduplicate) {
+ if (indirect === void 0) { indirect = false; }
+ if (deduplicate === void 0) { deduplicate = false; }
+ this.integrityCheckOnValueAddition();
+ if (!indirect) {
+ this.stack.push(this.floatStackValue(value));
+ return;
+ }
+ if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectFloatLookup, value)) {
+ this.stack.push(this.indirectFloatLookup[value]);
+ return;
+ }
+ var stackValue = this.floatStackValue(value);
+ var byteWidth = this.align(stackValue.width);
+ var newOffset = this.computeOffset(byteWidth);
+ var valueOffset = this.offset;
+ stackValue.writeToBuffer(byteWidth);
+ var stackOffset = this.offsetStackValue(valueOffset, value_type_1.ValueType.INDIRECT_FLOAT, stackValue.width);
+ this.stack.push(stackOffset);
+ this.offset = newOffset;
+ if (deduplicate) {
+ this.indirectFloatLookup[value] = stackOffset;
+ }
+ };
+ return Builder;
+}());
+exports.Builder = Builder;