Eclipse JDT：调用“正确缩进”以编程方式？

发布于 2024-09-02 19:06:25 字数 387 浏览 5 评论 0原文

我正在开发一个 Eclipse 插件，该插件可以修改用户项目中的 Java 代码。

基本上这个插件的结果是Java注释被添加到一些方法中，所以

void foo() { ... }

变成了

@MyAnnotation
void foo() { ... }

除了它看起来不太像那样；新插入的注释上的缩进很奇怪（具体来说，新注释一直到该行的左侧）。我想对文件进行所有更改，然后以编程方式调用“正确缩进”。

有谁知道该怎么做？我在这里或 JDT 论坛中找不到答案，所有看起来相关的类（IndentAction、JavaIndenter）都在我不应该使用的内部包中......

谢谢！

原文

I am working on an Eclipse plugin that modifies Java code in a user's project.

Basically the result of this plugin is that Java annotations are added to some methods, so

void foo() { ... }

becomes

@MyAnnotation
void foo() { ... }

Except that it doesn't quite look like that; the indentation on the newly inserted annotation is wack (specifically, the new annotation is all the way to the left-hand side of the line). I'd like to make all my changes to the file, and then programmatically call "Correct Indentation."

Does anyone know how to do this? I can't find the answer here or in the JDT forums, and all the classes that look relevant (IndentAction, JavaIndenter) are in internal packages which I'm not supposed to use...

Thanks!

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单身情人 2024-09-09 19:06:25

好吧，我想我可能已经找到了我想要的解决方案。我想我应该在询问之前花更多时间搜索...但为了将来的参考，这就是我所做的！好东西在 ToolFactory 中...

import org.eclipse.jdt.core.ToolFactory;
import org.eclipse.jdt.core.formatter.CodeFormatter;
import org.eclipse.jdt.core.ISourceRange;
import org.eclipse.text.edits.TextEdit;
import org.eclipse.jdt.core.ICompilationUnit;

...

ICompilationUnit cu = ...

...

CodeFormatter formatter = ToolFactory.createCodeFormatter(null);
ISourceRange range = cu.getSourceRange();
TextEdit indent_edit =
  formatter.format(CodeFormatter.K_COMPILATION_UNIT, 
    cu.getSource(), range.getOffset(), range.getLength(), 0, null);
cu.applyTextEdit(indent_edit, null);

cu.reconcile();

这会重新格式化整个文件。如果您需要重新格式化更少，还有其他选择...

Well I think I may have figured out the solution I want. Guess I should have spend more time searching before asking... but for future reference, here's what I did! The good stuff was in the ToolFactory...

import org.eclipse.jdt.core.ToolFactory;
import org.eclipse.jdt.core.formatter.CodeFormatter;
import org.eclipse.jdt.core.ISourceRange;
import org.eclipse.text.edits.TextEdit;
import org.eclipse.jdt.core.ICompilationUnit;

...

ICompilationUnit cu = ...

...

CodeFormatter formatter = ToolFactory.createCodeFormatter(null);
ISourceRange range = cu.getSourceRange();
TextEdit indent_edit =
  formatter.format(CodeFormatter.K_COMPILATION_UNIT, 
    cu.getSource(), range.getOffset(), range.getLength(), 0, null);
cu.applyTextEdit(indent_edit, null);

cu.reconcile();

This reformats the entire file. There are other options if you need to reformat less...

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