Input/Output Stream Redirection

[iamrecursion]

Summary

In addition to the standard language server functionality that we aim to provide over time (compile-time diagnostics, auto-completion, and so on), the nature of Enso and its visual environment means that we need to

Value

This functionality is the main building block for letting the GUI get updates on watched portions of the program.

Specification

The following points are based on the design provided at the completion of #445.

• Implement the message for redirecting stdout, stderr and stdin to and from the IDE.
• Implement the messages for disconnecting these from the IDE.
• Implement the corresponding Akka messages between the gateway and language server.
• Connect up the language server to the runtime to provide this functionality.
• Implement the responses for these messages.

Acceptance Criteria & Test Cases

• We have execution management functionality as specified above.
• This functionality is rigorously tested.