dart_monty_platform_interface

Part of dart_monty — pure Dart bindings for Monty, a restricted, sandboxed Python interpreter built in Rust.

Bob This package is co-designed by human and AI — nearly all code is AI-generated.

Pure Dart platform interface for dart_monty. Defines the shared API contract (MontyPlatform) implemented by native and web backends, along with common types like MontyResult, MontyException, and MontyResourceUsage.

This package has no Flutter dependency and can be used in CLI tools, server-side Dart, or any Dart project.

Flutter apps should import dart_monty instead — the federated plugin selects the correct backend automatically.
Pure Dart projects (CLI, server) can depend on this package directly alongside dart_monty_ffi or dart_monty_wasm.

Key Types

Type	Description
`MontyPlatform`	Abstract contract for running Python code
`BaseMontyPlatform`	Shared translation logic with `MontyCoreBindings` adapter
`MontyResult`	Execution result with value, error, and resource usage
`MontyProgress`	Sealed type: `MontyPending` (awaiting external call) or `MontyComplete`
`MontyError`	Sealed error hierarchy: `MontyCancelledError`, `MontyScriptError`, `MontyPanicError`, `MontyCrashError`, `MontyDisposedError`, `MontyResourceError`
`MontyCancelToken`	Extension type for cross-isolate cancellation via `cancelById`/`isHandleAlive`
`MontySession`	Stateful session with snapshot/restore under the hood
`MontyLimits`	Resource constraints (timeout, memory, stack depth)
`MontyException`	Python error with message, filename, line/column, traceback
`MontyResourceUsage`	Memory, time, and stack depth statistics

Usage

import 'package:dart_monty_platform_interface/dart_monty_platform_interface.dart';

// Construct a result from JSON (as returned by native/web backends).
final result = MontyResult.fromJson({
  'value': 42,
  'usage': {
    'memory_bytes_used': 1024,
    'time_elapsed_ms': 5,
    'stack_depth_used': 2,
  },
});

print(result.value); // 42
print(result.usage.memoryBytesUsed); // 1024

See the main dart_monty repository for full documentation.

dart_monty_platform_interface

Key Types

Usage

Libraries

dart_monty_platform_interface package