jcfa/src/jp/igapyon/jcfa/util/JcfaEclipseUtil.java

   1 package jp.igapyon.jcfa.util;
   2
   3 import java.util.Map;
   4
   5 import org.eclipse.jdt.core.JavaCore;
   6 import org.eclipse.jdt.core.ToolFactory;
   7 import org.eclipse.jdt.core.formatter.CodeFormatter;
   8 import org.eclipse.jdt.core.formatter.DefaultCodeFormatterConstants;
   9 import org.eclipse.jface.text.BadLocationException;
  10 import org.eclipse.jface.text.Document;
  11 import org.eclipse.jface.text.IDocument;
  12 import org.eclipse.text.edits.MalformedTreeException;
  13 import org.eclipse.text.edits.TextEdit;
  14
  15 public class JcfaEclipseUtil {
  16         /**
  17          * Format source using eclipse.
  18          *
  19          * @param source
  20          *            Input source.
  21          * @return Formatted source.
  22          */
  23         public static String formatSource(final String source) {
  24                 if (false)
  25                         System.out.println("TRACE: " + source);
  26
  27                 final Map options = DefaultCodeFormatterConstants
  28                                 .getEclipseDefaultSettings();
  29
  30                 options.put(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_1_7);
  31                 options.put(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM,
  32                                 JavaCore.VERSION_1_7);
  33                 options.put(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_1_7);
  34
  35                 options.put(
  36                                 DefaultCodeFormatterConstants.FORMATTER_ALIGNMENT_FOR_ENUM_CONSTANTS,
  37                                 DefaultCodeFormatterConstants.createAlignmentValue(true,
  38                                                 DefaultCodeFormatterConstants.WRAP_ONE_PER_LINE,
  39                                                 DefaultCodeFormatterConstants.INDENT_ON_COLUMN));
  40
  41                 final CodeFormatter cf = ToolFactory.createCodeFormatter(options);
  42                 cf.createIndentationString(4);
  43                 final TextEdit te = cf.format(CodeFormatter.K_COMPILATION_UNIT
  44                                 | CodeFormatter.F_INCLUDE_COMMENTS, source, 0, source.length(),
  45                                 0, null);
  46                 IDocument doc = new Document(source);
  47                 try {
  48                         te.apply(doc);
  49
  50                         if (false)
  51                                 System.out.println("TRACE: " + doc.get());
  52
  53                         return doc.get();
  54                 } catch (MalformedTreeException e) {
  55                         e.printStackTrace();
  56                         throw new IllegalArgumentException(e);
  57                 } catch (BadLocationException e) {
  58                         e.printStackTrace();
  59                         throw new IllegalArgumentException(e);
  60                 }
  61         }
  62 }