1. vscode runs and debugs rust programs

Environment: Use vscode (1) in WSL (ubuntu20.04)
to install rust and cargo in WSL

wangji@script-wang:~/code/rust/greeting/src$ sudo apt install rustc -y
wangji@script-wang:~/code/rust/greeting/src$ sudo apt install rustfmt -y
wangji@script-wang:~/code/rust/greeting/src$ sudo apt-get -y install cargo

(2) Install rust-analyzer in vscode

(3) Configure vscode compilation: open vscode, terminal -> run task -> configure task -> use template to generate task.json file -> others, tasks.json will be generated in .vscode in the project directory

The reference configuration is as follows:

{
    
    
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
    
    
            "label": "wangji rust build debug",
            "type": "shell",
            "command": "cargo",
            "args": [
                "build"
            ]
        },
        {
    
    
            "label": "wangji rust build release",
            "type": "shell",
            "command": "cargo",
            "args": [
                "build --release"
            ]
        }
    ]
}

Compile: Terminal -> Run Task -> wangji rust build ->

After installing rust-analyzer, in fact, you can see the running task of rust in the terminal->running task, but it feels not easy to use, because the command cannot add custom parameters
The running configuration is similar, just add a task in tasks.json

(4) Configure vscode debugging: Clicking vscode here
insert image description here
will also generate a launch.json file in .vscode under the project directory.
The available configurations are as follows:

{
    
    
    // 使用 IntelliSense 了解相关属性。 
    // 悬停以查看现有属性的描述。
    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
    
    
            "name": "Debug",
            "type": "gdb",
            "request": "launch",
            "target": "${workspaceFolder}/target/debug/${workspaceFolderBasename}",
            "cwd": "${workspaceRoot}",
            "valuesFormatting": "parseText"
        },
        {
    
    
            "name": "Release",
            "type": "gdb",
            "request": "launch",
            "target": "${workspaceFolder}/target/release/${workspaceFolderBasename}",
            "cwd": "${workspaceRoot}",
            "valuesFormatting": "parseText"
        }
    ]
}

debugging:
insert image description here

2. Frequently asked questions

1.rust: Request textDocument/formatting failed.

[Error - 10:02:32 AM] Request textDocument/formatting failed.
  Message: Failed to spawn cd "/home/wangji/code/rust/greeting/src" && "rustfmt" "--edition" "2021"
  Code: -32603

Observe the vscode output and find that the rustfmt command is not installed, just install it:

wangji@script-wang:~/code/rust/greeting/src$ sudo apt install rustfmt -y

2.cargo command

cargo clippy: 类似eslint，lint工具检查代码可以优化的地方
cargo fmt: 类似go fmt，代码格式化
cargo tree: 查看第三方库的版本和依赖关系
cargo bench: 运行benchmark(基准测试,性能测试)
cargo udeps(第三方): 检查项目中未使用的依赖
另外 cargo build/run --release 使用 release 编译会比默认的 debug 编译性能提升 10 倍以上，但是 release 缺点是编译速度较慢，而且不会显示 panic backtrace 的具体行号

3. Use rust-gdb to debug rust programs

For specific usage, see: Debugging Rust apps with GDB

4. Cargo build is too slow

Open or create a new /.cargo/config file in the user directory
Add configuration to the file

[source.crates-io]
registry = "https://github.com/rust-lang/crates.io-index"

replace-with = 'tuna'
[source.tuna]
registry = "https://mirrors.tuna.tsinghua.edu.cn/git/crates.io-index.git"

ref：

Debug rust program in vscode

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