使用 launch.json 中的“输入”选择在 Visual Studio Code 中的 preLaunchTask 中使用

Question

In a project there are a number of helper utilities. In the launch and tasks json files they are configured to allow the user to select the particular utility to build or debug. What I would like to do is have the selection from launch to be passed to the tasks and the task use that selection. The launch.json configuration file looks like:

launch.json
{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Debug: <Utility App>",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/apps/${input:utility}/${input:utility}",
            "args": ["--notimeout", "--pit"],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}/apps/${input:utility}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "preLaunchTask": "make utility",
        },
    "inputs": [
        {
          "type": "pickString",
          "id": "utility",
          "description": "Which utility app do you want to run?",
          "options": [
            "utility_1",
            "utility_2",
            "utility_3",
            "utility_4",
          ]
        },
    ]
}

The tasks.json configuration file looks like:

tasks.json
{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "make utility",
            "type": "process",
            "command": "make",
            "args": [ "${input:BuildUtility}" ],
            "group": "build",
            "problemMatcher": "$gcc"
        },
    ],
    "inputs": [
        {
            "type": "pickString",
            "id": "BuildUtility",
            "description": "Which utility do you want to build?",
            "options": [
                "utility_1",
                "utility_2",
                "utility_3",
                "utility_4",
            ]
        }
    ]
}

How would I pass the selection made from launch via preLaunchTask so the task uses that selection, effectively overriding "${input:BuildUtility}" so the user wouldn't be promoted to make a selection for the "args" field? Bonus would be having the tasks still ask for a selection if nothing was passed to it? Thanks.

Answer 1

Visual Studio 代码现在通过新的输入类型支持这一点pickString。

文档中参考：

pickString：显示“快速选择”下拉列表，让用户从多个选项中进行选择。

以下是如何创建选择输入的示例：

{
  "inputs": [
    {
      "type": "pickString",
      "id": "myString",
      "description": "Pick an option:",
      "options": [
        "foo",
        "bar",
        "baz"
      ],
      "default": "foo"
    }
  ]
}