dart_monty_platform_interface 0.8.0

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

dart_monty_platform_interface

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

Live Demo | GitHub | Monty

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.

• Most users should import dart_monty instead — it selects the native or web backend at compile time via conditional imports.
• Direct usage is for backend implementers or projects that need fine-grained type access.

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.