VSCode Redhat 语言对 Java 格式化程序的支持强制最大行长度

Question

我正在为 Java 项目使用 VS Code IDE。我安装 Language Support for Java(TM) by Red Hat 用于格式化代码。

settings.json:

{
    "java.configuration.updateBuildConfiguration": "automatic",
    "java.debug.settings.hotCodeReplace": "auto",
    "java.format.settings.url": "https://raw.githubusercontent.com/google/styleguide/gh-pages/eclipse-java-google-style.xml",
    "java.format.settings.profile": "GoogleStyle",
}

我正在写一个这样的 class:

public class Foo {
    private int theFirstVariable, theSecondVariable, theThirdVariable, theFourthVariable, theFifthVariable, theSixthVariable;
    Foo(
        int theFirstVariable,
        int theSecondVariable,
        int theThirdVariable,
        int theFourthVariable,
        int theFifthVariable,
        int theSixthVariable
    ) {
        this.theFirstVariable = theFirstVariable;
        this.theSecondVariable = theSecondVariable;
        this.theThirdVariable = theThirdVariable;
        this.theFourthVariable = theFourthVariable;
        this.theFifthVariable = theFifthVariable;
        this.theSixthVariable = theSixthVariable;
    }
}

当我格式化代码时（按Ctrl + s），它变成：

public class Foo {
    private int theFirstVariable, theSecondVariable, theThirdVariable, theFourthVariable,
            theFifthVariable, theSixthVariable;

    Foo(int theFirstVariable, int theSecondVariable, int theThirdVariable, int theFourthVariable,
            int theFifthVariable, int theSixthVariable) {
        this.theFirstVariable = theFirstVariable;
        this.theSecondVariable = theSecondVariable;
        this.theThirdVariable = theThirdVariable;
        this.theFourthVariable = theFourthVariable;
        this.theFifthVariable = theFifthVariable;
        this.theSixthVariable = theSixthVariable;
    }
}

在构造函数中，格式化程序似乎试图将每个参数填充到一行中，直到超过最大行长度。我们可以保留前者的格式吗？如果可以的话该怎么做？

Answer 1

无法保存所有您想要的格式样式。但是有可选的设置。

下载 GoogleStyle.xml 并更改设置：

<setting id="org.eclipse.jdt.core.formatter.join_wrapped_lines" value="false"/>

然后在 Settings.json:

"java.format.settings.url": "<local path to java-google-style.xml>",

这不会让你的代码和你写下来的一样，但至少参数被分成了行。虽然不是很好:

Answer 2

我尝试创建自定义 eclipse-java-google-style.xml 并按照@Molly Wang 的建议进行修改。而且我发现了一些可以给出我想要的结果的修改：

<setting id="org.eclipse.jdt.core.formatter.continuation_indentation" value="1" />
<setting id="org.eclipse.jdt.core.formatter.join_wrapped_lines" value="false"/>

格式化后代码变为：

public class Foo {
    private int theFirstVariable, theSecondVariable, theThirdVariable, theFourthVariable, theFifthVariable, theSixthVariable;
    Foo(
        int theFirstVariable,
        int theSecondVariable,
        int theThirdVariable,
        int theFourthVariable,
        int theFifthVariable,
        int theSixthVariable) {
        this.theFirstVariable = theFirstVariable;
        this.theSecondVariable = theSecondVariable;
        this.theThirdVariable = theThirdVariable;
        this.theFourthVariable = theFourthVariable;
        this.theFifthVariable = theFifthVariable;
        this.theSixthVariable = theSixthVariable;
    }
}

如果您希望构造函数的闭括号位于下一行，请添加一个空行，如下所示：

public class Foo {
    private int theFirstVariable, theSecondVariable, theThirdVariable, theFourthVariable,
        theFifthVariable, theSixthVariable;

    Foo(
        int theFirstVariable,
        int theSecondVariable,
        int theThirdVariable,
        int theFourthVariable,
        int theFifthVariable,
        int theSixthVariable

    ) {
        this.theFirstVariable = theFirstVariable;
        this.theSecondVariable = theSecondVariable;
        this.theThirdVariable = theThirdVariable;
        this.theFourthVariable = theFourthVariable;
        this.theFifthVariable = theFifthVariable;
        this.theSixthVariable = theSixthVariable;
    }
}

VSCode Redhat 语言对 Java 格式化程序的支持强制最大行长度

VSCode Redhat language support for Java's formatter forces max line length

java

redhat

visual-studio-code