aitbc
816e258d4c
Development Artifact Cleanup: ✅ BROTHER_NODE REORGANIZATION: Moved development test node to appropriate location - dev/test-nodes/brother_node/: Moved from root directory for better organization - Contains development configuration, test logs, and test chain data - No impact on production systems - purely development/testing artifact ✅ DEVELOPMENT ARTIFACTS IDENTIFIED: - Chain ID: aitbc-brother-chain (test/development chain) - Ports: 8010 (P2P) and 8011 (RPC) - different from production - Environment: .env file with test configuration - Logs: rpc.log and node.log from development testing session (March 15, 2026) ✅ ROOT DIRECTORY CLEANUP: Removed development clutter from production directory - brother_node/ moved to dev/test-nodes/brother_node/ - Root directory now contains only production-ready components - Development artifacts properly organized in dev/ subdirectory DIRECTORY STRUCTURE IMPROVEMENT: 📁 dev/test-nodes/: Development and testing node configurations 🏗️ Root Directory: Clean production structure with only essential components 🧪 Development Isolation: Test environments separated from production BENEFITS: ✅ Clean Production Directory: No development artifacts in root ✅ Better Organization: Development nodes grouped in dev/ subdirectory ✅ Clear Separation: Production vs development environments clearly distinguished ✅ Maintainability: Easier to identify and manage development components RESULT: Successfully moved brother_node development artifact to dev/test-nodes/ subdirectory, cleaning up the root directory while preserving development testing environment for future use.
734 lines
35 KiB
JavaScript
Executable File
734 lines
35 KiB
JavaScript
Executable File
import { charset, escapedSequences } from "./utils/utf-8.js";
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import { NonBufferedString, BufferedString, } from "./utils/bufferedString.js";
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import TokenType from "./utils/types/tokenType.js";
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// Tokenizer States
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var TokenizerStates;
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(function (TokenizerStates) {
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TokenizerStates[TokenizerStates["START"] = 0] = "START";
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TokenizerStates[TokenizerStates["ENDED"] = 1] = "ENDED";
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TokenizerStates[TokenizerStates["ERROR"] = 2] = "ERROR";
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TokenizerStates[TokenizerStates["TRUE1"] = 3] = "TRUE1";
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TokenizerStates[TokenizerStates["TRUE2"] = 4] = "TRUE2";
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TokenizerStates[TokenizerStates["TRUE3"] = 5] = "TRUE3";
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TokenizerStates[TokenizerStates["FALSE1"] = 6] = "FALSE1";
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TokenizerStates[TokenizerStates["FALSE2"] = 7] = "FALSE2";
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TokenizerStates[TokenizerStates["FALSE3"] = 8] = "FALSE3";
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TokenizerStates[TokenizerStates["FALSE4"] = 9] = "FALSE4";
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TokenizerStates[TokenizerStates["NULL1"] = 10] = "NULL1";
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TokenizerStates[TokenizerStates["NULL2"] = 11] = "NULL2";
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TokenizerStates[TokenizerStates["NULL3"] = 12] = "NULL3";
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TokenizerStates[TokenizerStates["STRING_DEFAULT"] = 13] = "STRING_DEFAULT";
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TokenizerStates[TokenizerStates["STRING_AFTER_BACKSLASH"] = 14] = "STRING_AFTER_BACKSLASH";
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TokenizerStates[TokenizerStates["STRING_UNICODE_DIGIT_1"] = 15] = "STRING_UNICODE_DIGIT_1";
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TokenizerStates[TokenizerStates["STRING_UNICODE_DIGIT_2"] = 16] = "STRING_UNICODE_DIGIT_2";
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TokenizerStates[TokenizerStates["STRING_UNICODE_DIGIT_3"] = 17] = "STRING_UNICODE_DIGIT_3";
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TokenizerStates[TokenizerStates["STRING_UNICODE_DIGIT_4"] = 18] = "STRING_UNICODE_DIGIT_4";
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TokenizerStates[TokenizerStates["STRING_INCOMPLETE_CHAR"] = 19] = "STRING_INCOMPLETE_CHAR";
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TokenizerStates[TokenizerStates["NUMBER_AFTER_INITIAL_MINUS"] = 20] = "NUMBER_AFTER_INITIAL_MINUS";
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TokenizerStates[TokenizerStates["NUMBER_AFTER_INITIAL_ZERO"] = 21] = "NUMBER_AFTER_INITIAL_ZERO";
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TokenizerStates[TokenizerStates["NUMBER_AFTER_INITIAL_NON_ZERO"] = 22] = "NUMBER_AFTER_INITIAL_NON_ZERO";
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TokenizerStates[TokenizerStates["NUMBER_AFTER_FULL_STOP"] = 23] = "NUMBER_AFTER_FULL_STOP";
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TokenizerStates[TokenizerStates["NUMBER_AFTER_DECIMAL"] = 24] = "NUMBER_AFTER_DECIMAL";
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TokenizerStates[TokenizerStates["NUMBER_AFTER_E"] = 25] = "NUMBER_AFTER_E";
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TokenizerStates[TokenizerStates["NUMBER_AFTER_E_AND_SIGN"] = 26] = "NUMBER_AFTER_E_AND_SIGN";
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TokenizerStates[TokenizerStates["NUMBER_AFTER_E_AND_DIGIT"] = 27] = "NUMBER_AFTER_E_AND_DIGIT";
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TokenizerStates[TokenizerStates["SEPARATOR"] = 28] = "SEPARATOR";
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TokenizerStates[TokenizerStates["BOM_OR_START"] = 29] = "BOM_OR_START";
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TokenizerStates[TokenizerStates["BOM"] = 30] = "BOM";
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})(TokenizerStates || (TokenizerStates = {}));
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function TokenizerStateToString(tokenizerState) {
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return [
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"START",
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"ENDED",
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"ERROR",
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"TRUE1",
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"TRUE2",
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"TRUE3",
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"FALSE1",
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"FALSE2",
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"FALSE3",
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"FALSE4",
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"NULL1",
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"NULL2",
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"NULL3",
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"STRING_DEFAULT",
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"STRING_AFTER_BACKSLASH",
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"STRING_UNICODE_DIGIT_1",
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"STRING_UNICODE_DIGIT_2",
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"STRING_UNICODE_DIGIT_3",
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"STRING_UNICODE_DIGIT_4",
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"STRING_INCOMPLETE_CHAR",
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"NUMBER_AFTER_INITIAL_MINUS",
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"NUMBER_AFTER_INITIAL_ZERO",
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"NUMBER_AFTER_INITIAL_NON_ZERO",
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"NUMBER_AFTER_FULL_STOP",
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"NUMBER_AFTER_DECIMAL",
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"NUMBER_AFTER_E",
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"NUMBER_AFTER_E_AND_SIGN",
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"NUMBER_AFTER_E_AND_DIGIT",
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"SEPARATOR",
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"BOM_OR_START",
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"BOM",
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][tokenizerState];
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}
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const defaultOpts = {
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stringBufferSize: 0,
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numberBufferSize: 0,
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separator: undefined,
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emitPartialTokens: false,
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};
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export class TokenizerError extends Error {
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constructor(message) {
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super(message);
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// Typescript is broken. This is a workaround
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Object.setPrototypeOf(this, TokenizerError.prototype);
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}
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}
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export default class Tokenizer {
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constructor(opts) {
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this.state = TokenizerStates.BOM_OR_START;
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this.bomIndex = 0;
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this.separatorIndex = 0;
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this.escapedCharsByteLength = 0;
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this.bytes_remaining = 0; // number of bytes remaining in multi byte utf8 char to read after split boundary
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this.bytes_in_sequence = 0; // bytes in multi byte utf8 char to read
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this.char_split_buffer = new Uint8Array(4); // for rebuilding chars split before boundary is reached
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this.encoder = new TextEncoder();
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this.offset = -1;
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opts = Object.assign(Object.assign({}, defaultOpts), opts);
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this.emitPartialTokens = opts.emitPartialTokens === true;
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this.bufferedString =
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opts.stringBufferSize && opts.stringBufferSize > 4
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? new BufferedString(opts.stringBufferSize)
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: new NonBufferedString();
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this.bufferedNumber =
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opts.numberBufferSize && opts.numberBufferSize > 0
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? new BufferedString(opts.numberBufferSize)
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: new NonBufferedString();
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this.separator = opts.separator;
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this.separatorBytes = opts.separator
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? this.encoder.encode(opts.separator)
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: undefined;
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}
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get isEnded() {
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return this.state === TokenizerStates.ENDED;
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}
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write(input) {
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try {
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let buffer;
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if (input instanceof Uint8Array) {
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buffer = input;
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}
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else if (typeof input === "string") {
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buffer = this.encoder.encode(input);
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}
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else if (Array.isArray(input)) {
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buffer = Uint8Array.from(input);
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}
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else if (ArrayBuffer.isView(input)) {
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buffer = new Uint8Array(input.buffer, input.byteOffset, input.byteLength);
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}
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else {
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throw new TypeError("Unexpected type. The `write` function only accepts Arrays, TypedArrays and Strings.");
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}
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for (let i = 0; i < buffer.length; i += 1) {
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const n = buffer[i]; // get current byte from buffer
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switch (this.state) {
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// @ts-expect-error fall through case
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case TokenizerStates.BOM_OR_START:
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if (input instanceof Uint8Array && n === 0xef) {
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this.bom = [0xef, 0xbb, 0xbf];
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this.bomIndex += 1;
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this.state = TokenizerStates.BOM;
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continue;
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}
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if (input instanceof Uint16Array) {
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if (n === 0xfe) {
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this.bom = [0xfe, 0xff];
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this.bomIndex += 1;
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this.state = TokenizerStates.BOM;
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continue;
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}
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if (n === 0xff) {
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this.bom = [0xff, 0xfe];
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this.bomIndex += 1;
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this.state = TokenizerStates.BOM;
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continue;
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}
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}
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if (input instanceof Uint32Array) {
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if (n === 0x00) {
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this.bom = [0x00, 0x00, 0xfe, 0xff];
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this.bomIndex += 1;
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this.state = TokenizerStates.BOM;
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continue;
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}
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if (n === 0xff) {
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this.bom = [0xff, 0xfe, 0x00, 0x00];
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this.bomIndex += 1;
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this.state = TokenizerStates.BOM;
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continue;
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}
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}
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// eslint-disable-next-line no-fallthrough
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case TokenizerStates.START:
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this.offset += 1;
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if (this.separatorBytes && n === this.separatorBytes[0]) {
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if (this.separatorBytes.length === 1) {
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this.state = TokenizerStates.START;
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this.onToken({
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token: TokenType.SEPARATOR,
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value: this.separator,
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offset: this.offset + this.separatorBytes.length - 1,
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});
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continue;
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}
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this.state = TokenizerStates.SEPARATOR;
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continue;
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}
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if (n === charset.SPACE ||
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n === charset.NEWLINE ||
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n === charset.CARRIAGE_RETURN ||
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n === charset.TAB) {
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// whitespace
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continue;
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}
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if (n === charset.LEFT_CURLY_BRACKET) {
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this.onToken({
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token: TokenType.LEFT_BRACE,
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value: "{",
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offset: this.offset,
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});
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continue;
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}
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if (n === charset.RIGHT_CURLY_BRACKET) {
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this.onToken({
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token: TokenType.RIGHT_BRACE,
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value: "}",
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offset: this.offset,
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});
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continue;
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}
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if (n === charset.LEFT_SQUARE_BRACKET) {
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this.onToken({
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token: TokenType.LEFT_BRACKET,
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value: "[",
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offset: this.offset,
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});
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continue;
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}
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if (n === charset.RIGHT_SQUARE_BRACKET) {
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this.onToken({
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token: TokenType.RIGHT_BRACKET,
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value: "]",
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offset: this.offset,
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});
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continue;
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}
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if (n === charset.COLON) {
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this.onToken({
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token: TokenType.COLON,
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value: ":",
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offset: this.offset,
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});
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continue;
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}
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if (n === charset.COMMA) {
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this.onToken({
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token: TokenType.COMMA,
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value: ",",
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offset: this.offset,
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});
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continue;
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}
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if (n === charset.LATIN_SMALL_LETTER_T) {
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this.state = TokenizerStates.TRUE1;
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continue;
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}
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if (n === charset.LATIN_SMALL_LETTER_F) {
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this.state = TokenizerStates.FALSE1;
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continue;
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}
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if (n === charset.LATIN_SMALL_LETTER_N) {
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this.state = TokenizerStates.NULL1;
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continue;
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}
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if (n === charset.QUOTATION_MARK) {
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this.bufferedString.reset();
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this.escapedCharsByteLength = 0;
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this.state = TokenizerStates.STRING_DEFAULT;
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continue;
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}
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if (n >= charset.DIGIT_ONE && n <= charset.DIGIT_NINE) {
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this.bufferedNumber.reset();
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this.bufferedNumber.appendChar(n);
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this.state = TokenizerStates.NUMBER_AFTER_INITIAL_NON_ZERO;
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continue;
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}
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if (n === charset.DIGIT_ZERO) {
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this.bufferedNumber.reset();
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this.bufferedNumber.appendChar(n);
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this.state = TokenizerStates.NUMBER_AFTER_INITIAL_ZERO;
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continue;
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}
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if (n === charset.HYPHEN_MINUS) {
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this.bufferedNumber.reset();
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this.bufferedNumber.appendChar(n);
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this.state = TokenizerStates.NUMBER_AFTER_INITIAL_MINUS;
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continue;
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}
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break;
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// STRING
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case TokenizerStates.STRING_DEFAULT:
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if (n === charset.QUOTATION_MARK) {
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const string = this.bufferedString.toString();
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this.state = TokenizerStates.START;
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this.onToken({
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token: TokenType.STRING,
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value: string,
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offset: this.offset,
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});
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this.offset +=
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this.escapedCharsByteLength +
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this.bufferedString.byteLength +
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1;
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continue;
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}
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if (n === charset.REVERSE_SOLIDUS) {
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this.state = TokenizerStates.STRING_AFTER_BACKSLASH;
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continue;
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}
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if (n >= 128) {
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// Parse multi byte (>=128) chars one at a time
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if (n >= 194 && n <= 223) {
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this.bytes_in_sequence = 2;
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}
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else if (n <= 239) {
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this.bytes_in_sequence = 3;
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}
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else {
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this.bytes_in_sequence = 4;
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}
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if (this.bytes_in_sequence <= buffer.length - i) {
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// if bytes needed to complete char fall outside buffer length, we have a boundary split
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this.bufferedString.appendBuf(buffer, i, i + this.bytes_in_sequence);
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i += this.bytes_in_sequence - 1;
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continue;
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}
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this.bytes_remaining = i + this.bytes_in_sequence - buffer.length;
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this.char_split_buffer.set(buffer.subarray(i));
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i = buffer.length - 1;
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this.state = TokenizerStates.STRING_INCOMPLETE_CHAR;
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continue;
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}
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if (n >= charset.SPACE) {
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this.bufferedString.appendChar(n);
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continue;
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}
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break;
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case TokenizerStates.STRING_INCOMPLETE_CHAR:
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// check for carry over of a multi byte char split between data chunks
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// & fill temp buffer it with start of this data chunk up to the boundary limit set in the last iteration
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this.char_split_buffer.set(buffer.subarray(i, i + this.bytes_remaining), this.bytes_in_sequence - this.bytes_remaining);
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this.bufferedString.appendBuf(this.char_split_buffer, 0, this.bytes_in_sequence);
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i = this.bytes_remaining - 1;
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this.state = TokenizerStates.STRING_DEFAULT;
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continue;
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case TokenizerStates.STRING_AFTER_BACKSLASH:
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// eslint-disable-next-line no-case-declarations
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const controlChar = escapedSequences[n];
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if (controlChar) {
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this.bufferedString.appendChar(controlChar);
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this.escapedCharsByteLength += 1; // len(\")=2 minus the fact you're appending len(controlChar)=1
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this.state = TokenizerStates.STRING_DEFAULT;
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continue;
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}
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if (n === charset.LATIN_SMALL_LETTER_U) {
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this.unicode = "";
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this.state = TokenizerStates.STRING_UNICODE_DIGIT_1;
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continue;
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}
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break;
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case TokenizerStates.STRING_UNICODE_DIGIT_1:
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case TokenizerStates.STRING_UNICODE_DIGIT_2:
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case TokenizerStates.STRING_UNICODE_DIGIT_3:
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if ((n >= charset.DIGIT_ZERO && n <= charset.DIGIT_NINE) ||
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(n >= charset.LATIN_CAPITAL_LETTER_A &&
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n <= charset.LATIN_CAPITAL_LETTER_F) ||
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(n >= charset.LATIN_SMALL_LETTER_A &&
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n <= charset.LATIN_SMALL_LETTER_F)) {
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this.unicode += String.fromCharCode(n);
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this.state += 1;
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continue;
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}
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break;
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case TokenizerStates.STRING_UNICODE_DIGIT_4:
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if ((n >= charset.DIGIT_ZERO && n <= charset.DIGIT_NINE) ||
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(n >= charset.LATIN_CAPITAL_LETTER_A &&
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n <= charset.LATIN_CAPITAL_LETTER_F) ||
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(n >= charset.LATIN_SMALL_LETTER_A &&
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n <= charset.LATIN_SMALL_LETTER_F)) {
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const intVal = parseInt(this.unicode + String.fromCharCode(n), 16);
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let unicodeString;
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if (this.highSurrogate === undefined) {
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if (intVal >= 0xd800 && intVal <= 0xdbff) {
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//<55296,56319> - highSurrogate
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this.highSurrogate = intVal;
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this.state = TokenizerStates.STRING_DEFAULT;
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continue;
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}
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else {
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unicodeString = String.fromCharCode(intVal);
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}
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}
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else {
|
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if (intVal >= 0xdc00 && intVal <= 0xdfff) {
|
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//<56320,57343> - lowSurrogate
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unicodeString = String.fromCharCode(this.highSurrogate, intVal);
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}
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else {
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unicodeString = String.fromCharCode(this.highSurrogate);
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}
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this.highSurrogate = undefined;
|
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}
|
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const unicodeBuffer = this.encoder.encode(unicodeString);
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this.bufferedString.appendBuf(unicodeBuffer);
|
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// len(\u0000)=6 minus the fact you're appending len(buf)
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this.escapedCharsByteLength += 6 - unicodeBuffer.byteLength;
|
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this.state = TokenizerStates.STRING_DEFAULT;
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continue;
|
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}
|
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break;
|
|
// Number
|
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case TokenizerStates.NUMBER_AFTER_INITIAL_MINUS:
|
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if (n === charset.DIGIT_ZERO) {
|
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this.bufferedNumber.appendChar(n);
|
|
this.state = TokenizerStates.NUMBER_AFTER_INITIAL_ZERO;
|
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continue;
|
|
}
|
|
if (n >= charset.DIGIT_ONE && n <= charset.DIGIT_NINE) {
|
|
this.bufferedNumber.appendChar(n);
|
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this.state = TokenizerStates.NUMBER_AFTER_INITIAL_NON_ZERO;
|
|
continue;
|
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}
|
|
break;
|
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case TokenizerStates.NUMBER_AFTER_INITIAL_ZERO:
|
|
if (n === charset.FULL_STOP) {
|
|
this.bufferedNumber.appendChar(n);
|
|
this.state = TokenizerStates.NUMBER_AFTER_FULL_STOP;
|
|
continue;
|
|
}
|
|
if (n === charset.LATIN_SMALL_LETTER_E ||
|
|
n === charset.LATIN_CAPITAL_LETTER_E) {
|
|
this.bufferedNumber.appendChar(n);
|
|
this.state = TokenizerStates.NUMBER_AFTER_E;
|
|
continue;
|
|
}
|
|
i -= 1;
|
|
this.state = TokenizerStates.START;
|
|
this.emitNumber();
|
|
continue;
|
|
case TokenizerStates.NUMBER_AFTER_INITIAL_NON_ZERO:
|
|
if (n >= charset.DIGIT_ZERO && n <= charset.DIGIT_NINE) {
|
|
this.bufferedNumber.appendChar(n);
|
|
continue;
|
|
}
|
|
if (n === charset.FULL_STOP) {
|
|
this.bufferedNumber.appendChar(n);
|
|
this.state = TokenizerStates.NUMBER_AFTER_FULL_STOP;
|
|
continue;
|
|
}
|
|
if (n === charset.LATIN_SMALL_LETTER_E ||
|
|
n === charset.LATIN_CAPITAL_LETTER_E) {
|
|
this.bufferedNumber.appendChar(n);
|
|
this.state = TokenizerStates.NUMBER_AFTER_E;
|
|
continue;
|
|
}
|
|
i -= 1;
|
|
this.state = TokenizerStates.START;
|
|
this.emitNumber();
|
|
continue;
|
|
case TokenizerStates.NUMBER_AFTER_FULL_STOP:
|
|
if (n >= charset.DIGIT_ZERO && n <= charset.DIGIT_NINE) {
|
|
this.bufferedNumber.appendChar(n);
|
|
this.state = TokenizerStates.NUMBER_AFTER_DECIMAL;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.NUMBER_AFTER_DECIMAL:
|
|
if (n >= charset.DIGIT_ZERO && n <= charset.DIGIT_NINE) {
|
|
this.bufferedNumber.appendChar(n);
|
|
continue;
|
|
}
|
|
if (n === charset.LATIN_SMALL_LETTER_E ||
|
|
n === charset.LATIN_CAPITAL_LETTER_E) {
|
|
this.bufferedNumber.appendChar(n);
|
|
this.state = TokenizerStates.NUMBER_AFTER_E;
|
|
continue;
|
|
}
|
|
i -= 1;
|
|
this.state = TokenizerStates.START;
|
|
this.emitNumber();
|
|
continue;
|
|
// @ts-expect-error fall through case
|
|
case TokenizerStates.NUMBER_AFTER_E:
|
|
if (n === charset.PLUS_SIGN || n === charset.HYPHEN_MINUS) {
|
|
this.bufferedNumber.appendChar(n);
|
|
this.state = TokenizerStates.NUMBER_AFTER_E_AND_SIGN;
|
|
continue;
|
|
}
|
|
// eslint-disable-next-line no-fallthrough
|
|
case TokenizerStates.NUMBER_AFTER_E_AND_SIGN:
|
|
if (n >= charset.DIGIT_ZERO && n <= charset.DIGIT_NINE) {
|
|
this.bufferedNumber.appendChar(n);
|
|
this.state = TokenizerStates.NUMBER_AFTER_E_AND_DIGIT;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.NUMBER_AFTER_E_AND_DIGIT:
|
|
if (n >= charset.DIGIT_ZERO && n <= charset.DIGIT_NINE) {
|
|
this.bufferedNumber.appendChar(n);
|
|
continue;
|
|
}
|
|
i -= 1;
|
|
this.state = TokenizerStates.START;
|
|
this.emitNumber();
|
|
continue;
|
|
// TRUE
|
|
case TokenizerStates.TRUE1:
|
|
if (n === charset.LATIN_SMALL_LETTER_R) {
|
|
this.state = TokenizerStates.TRUE2;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.TRUE2:
|
|
if (n === charset.LATIN_SMALL_LETTER_U) {
|
|
this.state = TokenizerStates.TRUE3;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.TRUE3:
|
|
if (n === charset.LATIN_SMALL_LETTER_E) {
|
|
this.state = TokenizerStates.START;
|
|
this.onToken({
|
|
token: TokenType.TRUE,
|
|
value: true,
|
|
offset: this.offset,
|
|
});
|
|
this.offset += 3;
|
|
continue;
|
|
}
|
|
break;
|
|
// FALSE
|
|
case TokenizerStates.FALSE1:
|
|
if (n === charset.LATIN_SMALL_LETTER_A) {
|
|
this.state = TokenizerStates.FALSE2;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.FALSE2:
|
|
if (n === charset.LATIN_SMALL_LETTER_L) {
|
|
this.state = TokenizerStates.FALSE3;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.FALSE3:
|
|
if (n === charset.LATIN_SMALL_LETTER_S) {
|
|
this.state = TokenizerStates.FALSE4;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.FALSE4:
|
|
if (n === charset.LATIN_SMALL_LETTER_E) {
|
|
this.state = TokenizerStates.START;
|
|
this.onToken({
|
|
token: TokenType.FALSE,
|
|
value: false,
|
|
offset: this.offset,
|
|
});
|
|
this.offset += 4;
|
|
continue;
|
|
}
|
|
break;
|
|
// NULL
|
|
case TokenizerStates.NULL1:
|
|
if (n === charset.LATIN_SMALL_LETTER_U) {
|
|
this.state = TokenizerStates.NULL2;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.NULL2:
|
|
if (n === charset.LATIN_SMALL_LETTER_L) {
|
|
this.state = TokenizerStates.NULL3;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.NULL3:
|
|
if (n === charset.LATIN_SMALL_LETTER_L) {
|
|
this.state = TokenizerStates.START;
|
|
this.onToken({
|
|
token: TokenType.NULL,
|
|
value: null,
|
|
offset: this.offset,
|
|
});
|
|
this.offset += 3;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.SEPARATOR:
|
|
this.separatorIndex += 1;
|
|
if (!this.separatorBytes ||
|
|
n !== this.separatorBytes[this.separatorIndex]) {
|
|
break;
|
|
}
|
|
if (this.separatorIndex === this.separatorBytes.length - 1) {
|
|
this.state = TokenizerStates.START;
|
|
this.onToken({
|
|
token: TokenType.SEPARATOR,
|
|
value: this.separator,
|
|
offset: this.offset + this.separatorIndex,
|
|
});
|
|
this.separatorIndex = 0;
|
|
}
|
|
continue;
|
|
// BOM support
|
|
case TokenizerStates.BOM:
|
|
if (n === this.bom[this.bomIndex]) {
|
|
if (this.bomIndex === this.bom.length - 1) {
|
|
this.state = TokenizerStates.START;
|
|
this.bom = undefined;
|
|
this.bomIndex = 0;
|
|
continue;
|
|
}
|
|
this.bomIndex += 1;
|
|
continue;
|
|
}
|
|
break;
|
|
case TokenizerStates.ENDED:
|
|
if (n === charset.SPACE ||
|
|
n === charset.NEWLINE ||
|
|
n === charset.CARRIAGE_RETURN ||
|
|
n === charset.TAB) {
|
|
// whitespace
|
|
continue;
|
|
}
|
|
}
|
|
throw new TokenizerError(`Unexpected "${String.fromCharCode(n)}" at position "${i}" in state ${TokenizerStateToString(this.state)}`);
|
|
}
|
|
if (this.emitPartialTokens) {
|
|
switch (this.state) {
|
|
case TokenizerStates.TRUE1:
|
|
case TokenizerStates.TRUE2:
|
|
case TokenizerStates.TRUE3:
|
|
this.onToken({
|
|
token: TokenType.TRUE,
|
|
value: true,
|
|
offset: this.offset,
|
|
partial: true,
|
|
});
|
|
break;
|
|
case TokenizerStates.FALSE1:
|
|
case TokenizerStates.FALSE2:
|
|
case TokenizerStates.FALSE3:
|
|
case TokenizerStates.FALSE4:
|
|
this.onToken({
|
|
token: TokenType.FALSE,
|
|
value: false,
|
|
offset: this.offset,
|
|
partial: true,
|
|
});
|
|
break;
|
|
case TokenizerStates.NULL1:
|
|
case TokenizerStates.NULL2:
|
|
case TokenizerStates.NULL3:
|
|
this.onToken({
|
|
token: TokenType.NULL,
|
|
value: null,
|
|
offset: this.offset,
|
|
partial: true,
|
|
});
|
|
break;
|
|
case TokenizerStates.STRING_DEFAULT: {
|
|
const string = this.bufferedString.toString();
|
|
this.onToken({
|
|
token: TokenType.STRING,
|
|
value: string,
|
|
offset: this.offset,
|
|
partial: true,
|
|
});
|
|
break;
|
|
}
|
|
case TokenizerStates.NUMBER_AFTER_INITIAL_ZERO:
|
|
case TokenizerStates.NUMBER_AFTER_INITIAL_NON_ZERO:
|
|
case TokenizerStates.NUMBER_AFTER_DECIMAL:
|
|
case TokenizerStates.NUMBER_AFTER_E_AND_DIGIT:
|
|
try {
|
|
this.onToken({
|
|
token: TokenType.NUMBER,
|
|
value: this.parseNumber(this.bufferedNumber.toString()),
|
|
offset: this.offset,
|
|
partial: true,
|
|
});
|
|
}
|
|
catch (_a) {
|
|
// Number couldn't be parsed. Do nothing.
|
|
}
|
|
}
|
|
}
|
|
}
|
|
catch (err) {
|
|
this.error(err);
|
|
}
|
|
}
|
|
emitNumber() {
|
|
this.onToken({
|
|
token: TokenType.NUMBER,
|
|
value: this.parseNumber(this.bufferedNumber.toString()),
|
|
offset: this.offset,
|
|
});
|
|
this.offset += this.bufferedNumber.byteLength - 1;
|
|
}
|
|
parseNumber(numberStr) {
|
|
return Number(numberStr);
|
|
}
|
|
error(err) {
|
|
if (this.state !== TokenizerStates.ENDED) {
|
|
this.state = TokenizerStates.ERROR;
|
|
}
|
|
this.onError(err);
|
|
}
|
|
end() {
|
|
switch (this.state) {
|
|
case TokenizerStates.NUMBER_AFTER_INITIAL_ZERO:
|
|
case TokenizerStates.NUMBER_AFTER_INITIAL_NON_ZERO:
|
|
case TokenizerStates.NUMBER_AFTER_DECIMAL:
|
|
case TokenizerStates.NUMBER_AFTER_E_AND_DIGIT:
|
|
this.state = TokenizerStates.ENDED;
|
|
this.emitNumber();
|
|
this.onEnd();
|
|
break;
|
|
case TokenizerStates.BOM_OR_START:
|
|
case TokenizerStates.START:
|
|
case TokenizerStates.ERROR:
|
|
case TokenizerStates.SEPARATOR:
|
|
this.state = TokenizerStates.ENDED;
|
|
this.onEnd();
|
|
break;
|
|
default:
|
|
this.error(new TokenizerError(`Tokenizer ended in the middle of a token (state: ${TokenizerStateToString(this.state)}). Either not all the data was received or the data was invalid.`));
|
|
}
|
|
}
|
|
// eslint-disable-next-line @typescript-eslint/no-unused-vars
|
|
onToken(parsedToken) {
|
|
// Override me
|
|
throw new TokenizerError('Can\'t emit tokens before the "onToken" callback has been set up.');
|
|
}
|
|
onError(err) {
|
|
// Override me
|
|
throw err;
|
|
}
|
|
onEnd() {
|
|
// Override me
|
|
}
|
|
}
|
|
//# sourceMappingURL=tokenizer.js.map
|