pkg/wasm_builder/lib/src/builder/memories.dart

// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import '../ir/ir.dart' as ir;
import 'builder.dart';
import 'util.dart';

class MemoriesBuilder with Builder<ir.Memories> {
  final ir.Module _module;

  MemoriesBuilder(this._module);

  final _definedMemories = <ir.DefinedMemory>[];
  final _importedMemories = <ir.ImportedMemory>[];

  /// Add a new memory to the module.
  ir.DefinedMemory define(bool shared, int minSize, [int? maxSize]) {
    final memory = ir.DefinedMemory(
      _module,
      ir.FinalizableIndex(),
      shared,
      minSize,
      maxSize,
    );
    _definedMemories.add(memory);
    return memory;
  }

  /// Imports a memory into this module.
  ir.ImportedMemory import(
    String module,
    String name,
    bool shared,
    int minSize, [
    int? maxSize,
  ]) {
    final memory = ir.ImportedMemory(
      _module,
      module,
      name,
      ir.FinalizableIndex(),
      shared,
      minSize,
      maxSize,
    );
    _importedMemories.add(memory);
    return memory;
  }

  @override
  ir.Memories forceBuild() {
    finalizeImportsAndDefinitions(_importedMemories, _definedMemories);
    return ir.Memories(_importedMemories, _definedMemories);
  }
}