phoityne-vscode: Haskell Debug Adapter for Visual Studio Code.

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Please see README.md


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Change log Changelog.md
Dependencies aeson, base (>=4.7 && <5), bytestring, Cabal, cmdargs, conduit, conduit-extra, containers, data-default, directory, filepath, fsnotify, hslogger, lens, MissingH, mtl, parsec, process, resourcet, safe, safe-exceptions, split, text, transformers [details]
License BSD-3-Clause
Copyright 2016-2019 phoityne_hs
Author phoityne_hs
Maintainer phoityne.hs@gmail.com
Category Development
Home page https://github.com/phoityne/phoityne-vscode
Bug tracker https://github.com/phoityne/phoityne-vscode/issues
Uploaded by phoityne_hs at 2019-02-03T03:14:48Z
Distributions NixOS:0.0.28.0
Executables phoityne-vscode
Downloads 15778 total (243 in the last 30 days)
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Status Hackage Matrix CI
Docs not available [build log]
Last success reported on 2019-02-03 [all 3 reports]

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Readme for phoityne-vscode-0.0.28.0

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Requirements

Install phoityne-vscode from hackage.

Especially for GHC8

Install phoityne-vscode and haskell-dap.
In the launch.json, add "--with-ghc=haskell-dap" to ghciCmd variable.

> stack install phoityne-vscode haskell-dap

Limitations

  • The source file extension must be ".hs"
  • Can not use STDIN handle while debugging.
  • Using GHC7, see the README.

Features

Continue & Steps

01_F5_F10_F11.gif

Stacktrace

The variable added to watch will be forced.

03_stacktrace.gif

Bindings

04_variables.gif

Break condition

05_break_cond.gif

Console output

02_console_out.gif

Quick Start

This is a new experimental feature.
Note!!, This function will automatically change the .vscode / launch.json file. 06_quick_start.gif

Shortcut keys

When you start debugging for the first time, .vscode/tasks.json will be created automatically. Then you can use F6, F7, F8 shortcut keys.

  • F5 : start debug
  • F6 : show command menu (for stack watch)
  • Shift + F6 : stop stack watch
  • F7 : stack clean & build
  • F8 : stack test
  • F9 : put a breakpoint on the current line
  • Shift + F9 : put a breakpoint on the current column

While debugging, you can use F5, F9, F10, F11 shortcut keys.

  • F5 : jump to next bp
  • F9 : put bp on the line
  • Shift + F9 : put bp on the column
  • F10 : step next
  • F11 : step into

Configuration

.vscode/launch.json

NAME REQUIRED OR OPTIONAL DEFAULT SETTING DESCRIPTION
startup required ${workspaceRoot}/test/Spec.hs debug startup file, will be loaded automatically.
startupFunc optional "" (empty string) debug startup function, will be run instead of main function.
startupArgs optional "" (empty string) arguments for startup function. set as string type.
ghciCmd required stack ghci --test --no-load --no-build --main-is TARGET --ghci-options -fprint-evld-with-show launch ghci command, must be Prelude module loaded. For example, "ghci -i\({workspaceRoot}/src", "cabal exec -- ghci -i\){workspaceRoot}/src"
ghciPrompt required H>>= ghci command prompt string.
ghciInitialPrompt optional "Prelude> " initial pormpt of ghci. set it when using custom prompt. e.g. set in .ghci
stopOnEntry required true stop or not after debugger launched.
mainArgs optional "" (empty string) main arguments.
logFile required ${workspaceRoot}/.vscode/phoityne.log internal log file.
logLevel required WARNING internal log level.

changing ghci initial prompt

If you change ghci prompt in .ghci file, or ghci prompt is changed from "Prelude>" by applying NoImplicitPrelude extension, set the initial prompt variable to same prompt string.

% diff .vscode/launch.json.old .vscode/launch.json
19c19
<             "ghciInitialPrompt": "Prelude> "      // default value.
---
>             "ghciInitialPrompt": "> "             // e.g.
%

Make sure needs of the last space, and don't forget adding it.

setting the startup hs file

Set the startup variable to the path of .hs file in which main function is defined.

% diff .vscode/launch.json.old .vscode/launch.json
10c10
<             "startup": "${workspaceRoot}/test/Spec.hs",    // default value.
---
>             "startup": "${workspaceRoot}/app/run.hs",     // e.g.
%

setting the startup function

If you want to run the specific function instead of main function, set the startupFunc variable.
For example, when specifying the following startDebug function,

startDebug :: String -> IO ()
startDebug name = do
  putStrLn "hello"
  putStrLn name 

set the valiavles in the launch.json file.

% diff .vscode/launch.json.old .vscode/launch.json
11c12
<             "startupFunc": "",    // default value.
<             "startupArgs": "",    // default value.
---
>             "startupFunc": "startDebug",       // e.g.
>             "startupArgs": "\"phoityne\"",     // e.g.
%

changing log level

For debugging phoityne itself, change the log level to DEBUG.
Adding Issue with the debug log.

% diff .vscode/launch.json.old .vscode/launch.json
12c12
<             "logLevel": "WARNING",               // default value.
---
>             "logLevel": "DEBUG",                 // e.g.
%

.vscode/tasks.json

TASK NAME REQUIRED OR OPTIONAL DEFAULT SETTING DESCRIPTION
stack build required stack build task definition for F6 shortcut key.
stack clean & build required stack clean && stack build task definition for F7 shortcut key.
stack test required stack test task definition for F8 shortcut key.
stack watch required stack build --test --no-run-tests --file-watch task definition for F6 shortcut key.

Thanks

Thank you for your contribution for this project.