0x1998 - MANAGER

Düzenlenen Dosya: HermesParser.js

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * 
 * @format
 */
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.parse = parse;

var _HermesParserDeserializer = _interopRequireDefault(require("./HermesParserDeserializer"));

var _HermesParserWASM = _interopRequireDefault(require("./HermesParserWASM"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

let HermesParserWASM;
let hermesParse;
let hermesParseResult_free;
let hermesParseResult_getError;
let hermesParseResult_getErrorLine;
let hermesParseResult_getErrorColumn;
let hermesParseResult_getProgramBuffer;
let hermesParseResult_getPositionBuffer;
let hermesParseResult_getPositionBufferSize;
/**
 * Init the WASM wrapper code generated by `emscripten` to preparse the
 * HermesParser WASM code.
 */

function initHermesParserWASM() {
  if (HermesParserWASM != null) {
    return;
  }

HermesParserWASM = (0, _HermesParserWASM.default)({
    /**
     * The emscripten version of `quit` unconditionally assigns the `status` to
     * `process.exitCode` which overrides any pre-existing code that has been
     * set, even if it is non zero. For our use case we never want an
     * `exitCode` to be set so this override removes that functionality.
     */
    quit(_status, toThrow) {
      throw toThrow;
    }

});
  hermesParse = HermesParserWASM.cwrap('hermesParse', 'number', ['number', 'number', 'number', 'number', 'number', 'number']);
  hermesParseResult_free = HermesParserWASM.cwrap('hermesParseResult_free', 'void', ['number']);
  hermesParseResult_getError = HermesParserWASM.cwrap('hermesParseResult_getError', 'string', ['number']);
  hermesParseResult_getErrorLine = HermesParserWASM.cwrap('hermesParseResult_getErrorLine', 'number', ['number']);
  hermesParseResult_getErrorColumn = HermesParserWASM.cwrap('hermesParseResult_getErrorColumn', 'number', ['number']);
  hermesParseResult_getProgramBuffer = HermesParserWASM.cwrap('hermesParseResult_getProgramBuffer', 'number', ['number']);
  hermesParseResult_getPositionBuffer = HermesParserWASM.cwrap('hermesParseResult_getPositionBuffer', 'number', ['number']);
  hermesParseResult_getPositionBufferSize = HermesParserWASM.cwrap('hermesParseResult_getPositionBufferSize', 'number', ['number']);
} // Copy a string into the WASM heap and null-terminate

function copyToHeap(buffer, addr) {
  HermesParserWASM.HEAP8.set(buffer, addr);
  HermesParserWASM.HEAP8[addr + buffer.length] = 0;
}

function parse(source, options) {
  initHermesParserWASM(); // Allocate space on heap for source text

const sourceBuffer = Buffer.from(source, 'utf8');

const sourceAddr = HermesParserWASM._malloc(sourceBuffer.length + 1);

if (!sourceAddr) {
    throw new Error('Parser out of memory');
  }

try {
    // Copy source text onto WASM heap
    copyToHeap(sourceBuffer, sourceAddr);
    const parseResult = hermesParse(sourceAddr, sourceBuffer.length + 1, options.flow === 'detect', options.enableExperimentalComponentSyntax, options.tokens, options.allowReturnOutsideFunction);

try {
      // Extract and throw error from parse result if parsing failed
      const err = hermesParseResult_getError(parseResult);

if (err) {
        const syntaxError = new SyntaxError(err); // $FlowExpectedError[prop-missing]

syntaxError.loc = {
          line: hermesParseResult_getErrorLine(parseResult),
          column: hermesParseResult_getErrorColumn(parseResult)
        };
        throw syntaxError;
      }

const deserializer = new _HermesParserDeserializer.default(hermesParseResult_getProgramBuffer(parseResult), hermesParseResult_getPositionBuffer(parseResult), hermesParseResult_getPositionBufferSize(parseResult), HermesParserWASM, options);
      return deserializer.deserialize();
    } finally {
      hermesParseResult_free(parseResult);
    }
  } finally {
    HermesParserWASM._free(sourceAddr);
  }
}

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