import org.eclipse.wst.jsdt.core.ToolFactory; //导入依赖的package包/类
private TextEdit jsdtFormat(String sourceString) {
  CodeFormatter jsdtFormatter = ToolFactory.createCodeFormatter(
      JavaScriptCore.getDefaultOptions());

  TextEdit textEdit = jsdtFormatter.format(CodeFormatter.K_JAVASCRIPT_UNIT,
      sourceString, 0, sourceString.length(), 0, LINE_END_STRING);
  return textEdit;
}
 

import org.eclipse.wst.jsdt.core.ToolFactory; //导入依赖的package包/类
public TextEdit format(IDocument document, TypedPosition partition, Map<String, String> javaFormattingPrefs,
					   Map<String, String> javaScriptFormattingPrefs, String original) {
	try {
		// Extract the JSNI block out of the document
		int offset = partition.getOffset();
		int length = partition.getLength();

		// Determine the line delimiter, indent string, and tab/indent widths
		String lineDelimiter = Settings.LINE_SEPARATOR;
		int tabWidth = IndentManipulation.getTabWidth(javaFormattingPrefs);
		int indentWidth = IndentManipulation.getIndentWidth(javaFormattingPrefs);

		// Get indentation level of the first line of the JSNI block (this should
		// be the line containing the JSNI method declaration)
		int methodDeclarationOffset = getMethodDeclarationOffset(document, offset);

		int jsniLine1 = document.getLineOfOffset(methodDeclarationOffset);
		int methodIndentLevel = getLineIndentLevel(document, jsniLine1, tabWidth, indentWidth);
		DefaultCodeFormatter defaultCodeFormatter = new DefaultCodeFormatter(javaFormattingPrefs);
		String indentLine = defaultCodeFormatter.createIndentationString(methodIndentLevel);

		// Extract the JSNI body out of the block and split it up by line
		String jsniSource = document.get(offset, length);
		String body = JsniParser.extractMethodBody(jsniSource);

		String formattedJs;

		// JSNI Java references mess up the JS formatter, so replace them
		// with place holder values
		JsniJavaRefReplacementResult replacementResults = replaceJsniJavaRefs(body);
		body = replacementResults.getJsni();
		CodeFormatter codeFormatter = ToolFactory.createCodeFormatter(javaScriptFormattingPrefs);

		TextEdit formatEdit = codeFormatter.format(CodeFormatter.K_STATEMENTS, body, 0, body.length(),
				methodIndentLevel + 1, lineDelimiter);

		if (formatEdit != null) {

			body = restoreJsniJavaRefs(replacementResults);

			Document d = new Document(body);
			formatEdit.apply(d);

			formattedJs = d.get();

			if (!formattedJs.startsWith(lineDelimiter)) {
				formattedJs = lineDelimiter + formattedJs;
			}

			if (!formattedJs.endsWith(lineDelimiter)) {
				formattedJs = formattedJs + lineDelimiter;
			}

			formattedJs = formattedJs + indentLine;

			formattedJs = "/*-{" + formattedJs + "}-*/";

		} else {

			if (original == null) {
				return null;
			}

			formattedJs = original; // formatting failed, use the original string
		}

		return new ReplaceEdit(offset, length, formattedJs);

	} catch (Exception e) {
		throw new RuntimeException(e);
	}
}
 

import org.eclipse.wst.jsdt.core.ToolFactory; //导入依赖的package包/类
@Override
public void init(Map<String, String> options, ConfigurationSource cfg) {
	super.initCfg(cfg);

	this.formatter = ToolFactory.createCodeFormatter(options);
}