emsdk/upstream/emscripten/src/parseTools_legacy.mjs

/**
 * @license
 * Copyright 2010 The Emscripten Authors
 * SPDX-License-Identifier: MIT
 */

import {warn, addToCompileTimeContext} from './utility.mjs';
import {POINTER_SIZE, runIfMainThread} from './parseTools.mjs';

// Replaced (at least internally) with receiveI64ParamAsI53 that does
// bounds checking.
function receiveI64ParamAsDouble(name) {
  warn('use of legacy parseTools function: receiveI64ParamAsDouble');
  if (WASM_BIGINT) {
    // Just convert the bigint into a double.
    return `${name} = Number(${name});`;
  }
  // Combine the i32 params. Use an unsigned operator on low and shift high by
  // 32 bits.
  return `var ${name} = ${name}_high * 0x100000000 + (${name}_low >>> 0);`;
}

function receiveI64ParamAsI32s(name) {
  warn('use of legacy parseTools function: receiveI64ParamAsI32s');
  if (WASM_BIGINT) {
    return `var ${name}_low = Number(${name} & 0xffffffffn) | 0, ${name}_high = Number(${name} >> 32n) | 0;`;
  }
  return '';
}

function makeMalloc(source, param) {
  warn('use of legacy parseTools function: makeMalloc');
  return `_malloc(${param})`;
}

const Runtime = {
  POINTER_SIZE,
  QUANTUM_SIZE: POINTER_SIZE,
};

// Legacy name for runIfMainThread.
const runOnMainThread = runIfMainThread;

addToCompileTimeContext({
  Runtime,
  makeMalloc,
  receiveI64ParamAsDouble,
  receiveI64ParamAsI32s,
  runOnMainThread,
});