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83 lines
3.2 KiB
83 lines
3.2 KiB
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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*
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* @format
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*/
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.parse = parse;
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var _HermesParserDeserializer = _interopRequireDefault(require("./HermesParserDeserializer"));
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var _HermesParserWASM = _interopRequireDefault(require("./HermesParserWASM"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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const hermesParse = _HermesParserWASM.default.cwrap('hermesParse', 'number', ['number', 'number', 'number', 'number', 'number']);
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const hermesParseResult_free = _HermesParserWASM.default.cwrap('hermesParseResult_free', 'void', ['number']);
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const hermesParseResult_getError = _HermesParserWASM.default.cwrap('hermesParseResult_getError', 'string', ['number']);
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const hermesParseResult_getErrorLine = _HermesParserWASM.default.cwrap('hermesParseResult_getErrorLine', 'number', ['number']);
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const hermesParseResult_getErrorColumn = _HermesParserWASM.default.cwrap('hermesParseResult_getErrorColumn', 'number', ['number']);
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const hermesParseResult_getProgramBuffer = _HermesParserWASM.default.cwrap('hermesParseResult_getProgramBuffer', 'number', ['number']);
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const hermesParseResult_getPositionBuffer = _HermesParserWASM.default.cwrap('hermesParseResult_getPositionBuffer', 'number', ['number']);
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const hermesParseResult_getPositionBufferSize = _HermesParserWASM.default.cwrap('hermesParseResult_getPositionBufferSize', 'number', ['number']); // Copy a string into the WASM heap and null-terminate
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function copyToHeap(buffer, addr) {
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_HermesParserWASM.default.HEAP8.set(buffer, addr);
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_HermesParserWASM.default.HEAP8[addr + buffer.length] = 0;
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}
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function parse(source, options) {
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// Allocate space on heap for source text
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const sourceBuffer = Buffer.from(source, 'utf8');
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const sourceAddr = _HermesParserWASM.default._malloc(sourceBuffer.length + 1);
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if (!sourceAddr) {
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throw new Error('Parser out of memory');
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}
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try {
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// Copy source text onto WASM heap
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copyToHeap(sourceBuffer, sourceAddr);
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const parseResult = hermesParse(sourceAddr, sourceBuffer.length + 1, options.flow === 'detect', options.tokens, options.allowReturnOutsideFunction);
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try {
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// Extract and throw error from parse result if parsing failed
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const err = hermesParseResult_getError(parseResult);
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if (err) {
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const syntaxError = new SyntaxError(err); // $FlowExpectedError[prop-missing]
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syntaxError.loc = {
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line: hermesParseResult_getErrorLine(parseResult),
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column: hermesParseResult_getErrorColumn(parseResult)
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};
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throw syntaxError;
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}
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const deserializer = new _HermesParserDeserializer.default(hermesParseResult_getProgramBuffer(parseResult), hermesParseResult_getPositionBuffer(parseResult), hermesParseResult_getPositionBufferSize(parseResult), _HermesParserWASM.default, options);
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return deserializer.deserialize();
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} finally {
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hermesParseResult_free(parseResult);
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}
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} finally {
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_HermesParserWASM.default._free(sourceAddr);
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}
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} |