src/library_getvalue.js

/**
 * @license
 * Copyright 2022 The Emscripten Authors
 * SPDX-License-Identifier: MIT
 */

var LibraryMemOps = {
  $setValue__docs: `
  /**
   * @param {number} ptr
   * @param {number} value
   * @param {string} type
   */`,
  $setValue: function(ptr, value, type = 'i8') {
    if (type.endsWith('*')) type = '*';
    switch (type) {
      case 'i1': {{{ makeSetValue('ptr', '0', 'value', 'i1') }}}; break;
      case 'i8': {{{ makeSetValue('ptr', '0', 'value', 'i8') }}}; break;
      case 'i16': {{{ makeSetValue('ptr', '0', 'value', 'i16') }}}; break;
      case 'i32': {{{ makeSetValue('ptr', '0', 'value', 'i32') }}}; break;
      case 'i64': {{{ makeSetValue('ptr', '0', 'value', 'i64') }}}; break;
      case 'float': {{{ makeSetValue('ptr', '0', 'value', 'float') }}}; break;
      case 'double': {{{ makeSetValue('ptr', '0', 'value', 'double') }}}; break;
      case '*': {{{ makeSetValue('ptr', '0', 'value', '*') }}}; break;
      default: abort('invalid type for setValue: ' + type);
    }
  },

  $getValue__docs: `
  /**
   * @param {number} ptr
   * @param {string} type
   */`,
  $getValue: function(ptr, type = 'i8') {
    if (type.endsWith('*')) type = '*';
    switch (type) {
      case 'i1': return {{{ makeGetValue('ptr', '0', 'i1') }}};
      case 'i8': return {{{ makeGetValue('ptr', '0', 'i8') }}};
      case 'i16': return {{{ makeGetValue('ptr', '0', 'i16') }}};
      case 'i32': return {{{ makeGetValue('ptr', '0', 'i32') }}};
      case 'i64': return {{{ makeGetValue('ptr', '0', 'i64') }}};
      case 'float': return {{{ makeGetValue('ptr', '0', 'float') }}};
      case 'double': return {{{ makeGetValue('ptr', '0', 'double') }}};
      case '*': return {{{ makeGetValue('ptr', '0', '*') }}};
      default: abort('invalid type for getValue: ' + type);
    }
    return null;
  },

#if SAFE_HEAP
  // Identical to above two functions, but known to the safeHeap pass
  // in tools/acorn-optimizer.js.  The heap accesses here in these two
  // functions will not get re-written.
  $setValue_safe__internal: true,
  $setValue_safe: function(ptr, value, type) {
    switch (type) {
      case 'i1': {{{ makeSetValue('ptr', '0', 'value', 'i1') }}}; break;
      case 'i8': {{{ makeSetValue('ptr', '0', 'value', 'i8') }}}; break;
      case 'i16': {{{ makeSetValue('ptr', '0', 'value', 'i16') }}}; break;
      case 'i32': {{{ makeSetValue('ptr', '0', 'value', 'i32') }}}; break;
      case 'i64': {{{ makeSetValue('ptr', '0', 'value', 'i64') }}}; break;
      case 'float': {{{ makeSetValue('ptr', '0', 'value', 'float') }}}; break;
      case 'double': {{{ makeSetValue('ptr', '0', 'value', 'double') }}}; break;
      default: abort('invalid type for setValue: ' + type);
    }
  },

  $getValue_safe__internal: true,
  $getValue_safe: function(ptr, type) {
    switch (type) {
      case 'i1': return {{{ makeGetValue('ptr', '0', 'i1') }}};
      case 'i8': return {{{ makeGetValue('ptr', '0', 'i8') }}};
      case 'i16': return {{{ makeGetValue('ptr', '0', 'i16') }}};
      case 'i32': return {{{ makeGetValue('ptr', '0', 'i32') }}};
      case 'i64': return {{{ makeGetValue('ptr', '0', 'i64') }}};
      case 'float': return {{{ makeGetValue('ptr', '0', 'float') }}};
      case 'double': return {{{ makeGetValue('ptr', '0', 'double') }}};
      default: abort('invalid type for getValue: ' + type);
    }
  },
#endif
};

mergeInto(LibraryManager.library, LibraryMemOps);