如何在vscode中使用erlang插件调试rebar3 erlang?

mgdq6dx1  于 2022-12-08  发布在  Erlang
关注(0)|答案(1)|浏览(258)

我正在使用Erlang语言的vscode插件。我创建了一个新的rebar3应用程序,并创建了一个简单的应用程序,不使用监督:

-module(test_app_app).

-behaviour(application).

-export([start/2, stop/1]).

start(_StartType, _StartArgs) ->
    load_file("input.txt").

stop(_State) ->
    ok.

load_file(Filename) ->
    case file:read_file(Filename) of
        {ok, Bin} ->
            Bin;
        {error, Reason} ->
            erlang:error(Reason)
    end.

我配置了一个launch.json文件,如下所示:

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Launch erlang",
            "type": "erlang",
            "request": "launch",
            "cwd": "${workspaceRoot}",
            "arguments": "-s test_app_app start",
            "preLaunchTask": "rebar3 compile"
        }
    ]
}

和用于编译的tasks.json:

{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "rebar3 compile",
            "type": "shell",
            "command": "rebar3 compile",
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "problemMatcher": "$erlang"
        }
    ]
}

当我按F5键时,得到以下输出:

compiling erlang bridge to '/home/peter/.vscode/extensions/pgourlain.erlang-0.8.1/_build/default/lib/ebin'
Compiling arguments file  "/tmp/bp_1454870.erl"
Compile result: sucess 
Module bp_1454870 loaded
{"init terminating in do_boot",{undef,[{t
est_app_app,start,[],[]},{init,start_em,1,[]},{init,do_boot,3,[]}]}}
init terminating in do_boot ({undef,[{test_app_app,start,[],[]},{init,start_em,1,[]},{init,do_boot,3,[]}]})

Crash dump is being written to: erl_crash.dump...
done
erl exit code:1
erl exit with code 1

有人知道为什么这对我不起作用吗?

qaxu7uf2

qaxu7uf21#

问题出在您的launch.json中。您尝试运行模块test_app_app中的函数start/0,但该函数不存在。
尝试使用

"arguments": "-eval \"application:start(test_app)\""

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