@Nullable
private Commenter findCommenter(final int line) {
final FileType fileType = myFile.getFileType();
if (fileType instanceof AbstractFileType) {
return ((AbstractFileType) fileType).getCommenter();
}
int lineStartOffset = myDocument.getLineStartOffset(line);
int lineEndOffset = myDocument.getLineEndOffset(line) - 1;
final CharSequence charSequence = myDocument.getCharsSequence();
lineStartOffset = CharArrayUtil.shiftForward(charSequence, lineStartOffset, " \t");
lineEndOffset =
CharArrayUtil.shiftBackward(charSequence, lineEndOffset < 0 ? 0 : lineEndOffset, " \t");
final Language lineStartLanguage = PsiUtilBase.getLanguageAtOffset(myFile, lineStartOffset);
final Language lineEndLanguage = PsiUtilBase.getLanguageAtOffset(myFile, lineEndOffset);
return CommentByBlockCommentHandler.getCommenter(
myFile, myEditor, lineStartLanguage, lineEndLanguage);
}
private void uncommentRange(int startOffset, int endOffset, @NotNull Commenter commenter) {
final String commentedSuffix = commenter.getCommentedBlockCommentSuffix();
final String commentedPrefix = commenter.getCommentedBlockCommentPrefix();
final String prefix = commenter.getBlockCommentPrefix();
final String suffix = commenter.getBlockCommentSuffix();
if (prefix == null || suffix == null) {
return;
}
if (endOffset >= suffix.length()
&& CharArrayUtil.regionMatches(
myDocument.getCharsSequence(), endOffset - suffix.length(), suffix)) {
myDocument.deleteString(endOffset - suffix.length(), endOffset);
}
if (commentedPrefix != null && commentedSuffix != null) {
CommentByBlockCommentHandler.commentNestedComments(
myDocument, new TextRange(startOffset, endOffset), commenter);
}
myDocument.deleteString(startOffset, startOffset + prefix.length());
}