public void initMarkers(Place shreds) {
    SmartPointerManager smartPointerManager = SmartPointerManager.getInstance(myProject);
    int curOffset = -1;
    for (PsiLanguageInjectionHost.Shred shred : shreds) {
      final RangeMarker rangeMarker =
          myNewDocument.createRangeMarker(
              shred.getRange().getStartOffset() + shred.getPrefix().length(),
              shred.getRange().getEndOffset() - shred.getSuffix().length());
      final TextRange rangeInsideHost = shred.getRangeInsideHost();
      PsiLanguageInjectionHost host = shred.getHost();
      RangeMarker origMarker =
          myOrigDocument.createRangeMarker(
              rangeInsideHost.shiftRight(host.getTextRange().getStartOffset()));
      SmartPsiElementPointer<PsiLanguageInjectionHost> elementPointer =
          smartPointerManager.createSmartPsiElementPointer(host);
      Trinity<RangeMarker, RangeMarker, SmartPsiElementPointer> markers =
          Trinity.<RangeMarker, RangeMarker, SmartPsiElementPointer>create(
              origMarker, rangeMarker, elementPointer);
      myMarkers.add(markers);

      origMarker.setGreedyToRight(true);
      rangeMarker.setGreedyToRight(true);
      if (origMarker.getStartOffset() > curOffset) {
        origMarker.setGreedyToLeft(true);
        rangeMarker.setGreedyToLeft(true);
      }
      curOffset = origMarker.getEndOffset();
    }
    initGuardedBlocks(shreds);
  }
  private static Trinity<PsiElement, TextRange, Value> getSelectedExpression(
      final Project project, final Editor editor, final Point point, final ValueHintType type) {
    final Ref<PsiElement> selectedExpression = Ref.create(null);
    final Ref<TextRange> currentRange = Ref.create(null);
    final Ref<Value> preCalculatedValue = Ref.create(null);

    PsiDocumentManager.getInstance(project)
        .commitAndRunReadAction(
            new Runnable() {
              public void run() {
                // Point -> offset
                final int offset = calculateOffset(editor, point);

                PsiFile psiFile =
                    PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument());

                if (psiFile == null || !psiFile.isValid()) return;

                int selectionStart = editor.getSelectionModel().getSelectionStart();
                int selectionEnd = editor.getSelectionModel().getSelectionEnd();

                if ((type == ValueHintType.MOUSE_CLICK_HINT
                        || type == ValueHintType.MOUSE_ALT_OVER_HINT)
                    && (selectionStart <= offset && offset <= selectionEnd)) {
                  PsiElement ctx =
                      (selectionStart > 0)
                          ? psiFile.findElementAt(selectionStart - 1)
                          : psiFile.findElementAt(selectionStart);
                  try {
                    String text = editor.getSelectionModel().getSelectedText();
                    if (text != null && ctx != null) {
                      selectedExpression.set(
                          JVMElementFactories.getFactory(ctx.getLanguage(), project)
                              .createExpressionFromText(text, ctx));
                      currentRange.set(
                          new TextRange(
                              editor.getSelectionModel().getSelectionStart(),
                              editor.getSelectionModel().getSelectionEnd()));
                    }
                  } catch (IncorrectOperationException ignored) {
                  }
                }

                if (currentRange.get() == null) {
                  PsiElement elementAtCursor = psiFile.findElementAt(offset);
                  if (elementAtCursor == null) {
                    return;
                  }
                  Pair<PsiElement, TextRange> pair =
                      findExpression(
                          elementAtCursor,
                          type == ValueHintType.MOUSE_CLICK_HINT
                              || type == ValueHintType.MOUSE_ALT_OVER_HINT);
                  if (pair == null) {
                    if (type == ValueHintType.MOUSE_OVER_HINT) {
                      final DebuggerSession debuggerSession =
                          DebuggerManagerEx.getInstanceEx(project)
                              .getContext()
                              .getDebuggerSession();
                      if (debuggerSession != null && debuggerSession.isPaused()) {
                        final Pair<Method, Value> lastExecuted =
                            debuggerSession.getProcess().getLastExecutedMethod();
                        if (lastExecuted != null) {
                          final Method method = lastExecuted.getFirst();
                          if (method != null) {
                            final Pair<PsiElement, TextRange> expressionPair =
                                findExpression(elementAtCursor, true);
                            if (expressionPair != null
                                && expressionPair.getFirst() instanceof PsiMethodCallExpression) {
                              final PsiMethodCallExpression methodCallExpression =
                                  (PsiMethodCallExpression) expressionPair.getFirst();
                              final PsiMethod psiMethod = methodCallExpression.resolveMethod();
                              if (psiMethod != null) {
                                final JVMName jvmSignature = JVMNameUtil.getJVMSignature(psiMethod);
                                try {
                                  if (method.name().equals(psiMethod.getName())
                                      && method
                                          .signature()
                                          .equals(
                                              jvmSignature.getName(debuggerSession.getProcess()))) {
                                    pair = expressionPair;
                                    preCalculatedValue.set(lastExecuted.getSecond());
                                  }
                                } catch (EvaluateException ignored) {
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                  if (pair == null) {
                    return;
                  }
                  selectedExpression.set(pair.getFirst());
                  currentRange.set(pair.getSecond());
                }
              }
            });
    return Trinity.create(selectedExpression.get(), currentRange.get(), preCalculatedValue.get());
  }