Package com.intellij.openapi.util

Examples of com.intellij.openapi.util.TextRange

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             }
           });
  }

  private static Collection<String> suggestKeywords(PsiElement position) {
    final TextRange posRange = position.getTextRange();
    final PsiElement posFile = position.getContainingFile();

    final List<PsiElement> pathToBlockStatement = UsefulPsiTreeUtil.getPathToParentOfType(position, DartBlock.class);
    final DartPsiCompositeElement classInterface = PsiTreeUtil.getParentOfType(position, DartClassMembers.class);

    final String text;
    final int offset;
    if (pathToBlockStatement != null) {
      final Pair<String, Integer> pair = DartCodeGenerateUtil.wrapStatement(posRange.substring(posFile.getText()));
      text = pair.getFirst();
      offset = pair.getSecond();
    }
    else if (classInterface != null) {
      final Pair<String, Integer> pair = DartCodeGenerateUtil.wrapFunction(posRange.substring(posFile.getText()));
      text = pair.getFirst();
      offset = pair.getSecond();
    }
    else {
      DartEmbeddedContent embeddedContent = PsiTreeUtil.getParentOfType(position, DartEmbeddedContent.class);
      int startOffset = embeddedContent != null ? embeddedContent.getTextOffset() : 0;
      text = posRange.getStartOffset() == 0 ? "" : posFile.getText().substring(startOffset, posRange.getStartOffset());
      offset = 0;
    }

    final List<String> result = new ArrayList<String>();
    if (pathToBlockStatement != null && pathToBlockStatement.size() > 2) {
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  @Override
  public int getTextStartOffset(@NotNull PsiElement element) {
    if (element instanceof DartComponentName) {
      element = element.getParent();
    }
    final TextRange textRange = element.getTextRange();
    return textRange.getStartOffset();
  }
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  @Override
  public int getTextEndOffset(@NotNull PsiElement element) {
    if (element instanceof DartComponentName) {
      element = element.getParent();
    }
    final TextRange textRange = element.getTextRange();
    return textRange.getEndOffset();
  }
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    return result.toString();
  }

  public TextRange getParameterRange(int index) {
    if (index == -1) {
      return new TextRange(0, 0);
    }
    int startOffset = 0;
    for (int i = 0, length = myParameters.length; i < length; i++) {
      if (i == index) {
        int shift = i == 0 ? 0 : ", ".length();
        return new TextRange(startOffset + shift, startOffset + shift + myParameters[i].toString().length());
      }
      if (i > 0) {
        startOffset += ", ".length();
      }
      startOffset += myParameters[i].toString().length();
    }
    startOffset += ", [".length();
    for (int i = 0, length = myNamedParameters.length; i < length; i++) {
      if ((i + myParameters.length) == index) {
        int shift = i == 0 ? 0 : ", ".length();
        return new TextRange(startOffset + shift, startOffset + shift + myNamedParameters[i].toString().length());
      }
      if (i > 0) {
        startOffset += ", ".length();
      }
      startOffset += myNamedParameters[i].toString().length();
    }
    return new TextRange(0, 0);
  }
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  private static ProblemDescriptor computeProblemDescriptor(final @NotNull InspectionManager manager,
                                                            final @NotNull PsiFile psiFile,
                                                            final @NotNull AnalysisError analysisError) {

    final int startOffset = analysisError.getOffset();
    final TextRange textRange = new TextRange(startOffset, startOffset + analysisError.getLength());
    PsiElement element = psiFile.findElementAt(startOffset + analysisError.getLength() / 2);
    while (element != null && textRange.getStartOffset() < element.getTextOffset()) {
      element = element.getParent();
    }

    if (element != null && textRange.equals(element.getTextRange())) {
      return computeProblemDescriptor(manager, analysisError, element);
    }
    return computeProblemDescriptor(manager, analysisError, psiFile, textRange);
  }
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    }

    if (element instanceof DartMetadata) {
      final DartArguments arguments = ((DartMetadata)element).getArguments();
      final int endOffset = arguments == null ? element.getTextRange().getEndOffset() : arguments.getTextRange().getStartOffset();
      final TextRange range = TextRange.create(element.getTextRange().getStartOffset(), endOffset);
      createInfoAnnotation(holder, range, DartSyntaxHighlighterColors.DART_METADATA);
      return;
    }

    if (element instanceof DartSymbolLiteralExpression) {
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    }
    else if (element instanceof DartNamedConstructorDeclaration) {
      final DartNamedConstructorDeclaration decl = (DartNamedConstructorDeclaration)element;
      final PsiElement child = decl.getFirstChild();
      final DartComponentName name = decl.getComponentName();
      final TextRange textRange = new TextRange(child.getTextOffset(), name.getTextRange().getEndOffset());
      createInfoAnnotation(holder, textRange, DartSyntaxHighlighterColors.DART_CONSTRUCTOR_DECLARATION);
    }
    else if (element instanceof DartFactoryConstructorDeclaration) {
      final DartFactoryConstructorDeclaration decl = (DartFactoryConstructorDeclaration)element;
      final DartReference dartReference = PsiTreeUtil.findChildOfType(decl, DartReference.class);
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  }

  private static void highlightEscapeSequences(final PsiElement node, final AnnotationHolder holder) {
    final List<Pair<TextRange, Boolean>> escapeSequenceRangesAndValidity = getEscapeSequenceRangesAndValidity(node.getText());
    for (Pair<TextRange, Boolean> rangeAndValidity : escapeSequenceRangesAndValidity) {
      final TextRange range = rangeAndValidity.first.shiftRight(node.getTextRange().getStartOffset());
      final TextAttributesKey attribute = rangeAndValidity.second ? DartSyntaxHighlighterColors.VALID_STRING_ESCAPE
                                                                  : DartSyntaxHighlighterColors.INVALID_STRING_ESCAPE;
      if (rangeAndValidity.second) {
        holder.createInfoAnnotation(range, null).setTextAttributes(attribute);
      }
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    int currentIndex = -1;
    while ((currentIndex = text.indexOf('\\', currentIndex)) != -1) {
      final int startIndex = currentIndex;

      if (text.length() <= currentIndex + 1) {
        result.add(Pair.create(new TextRange(startIndex, text.length()), false));
        break;
      }

      final char nextChar = text.charAt(++currentIndex);

      if (nextChar == 'x') {
        if (text.length() <= currentIndex + 2) {
          result.add(Pair.create(new TextRange(startIndex, text.length()), false));
          break;
        }

        final char hexChar1 = text.charAt(++currentIndex);
        final char hexChar2 = text.charAt(++currentIndex);
        final boolean valid = StringUtil.isHexDigit(hexChar1) && StringUtil.isHexDigit(hexChar2);
        currentIndex++;
        result.add(Pair.create(new TextRange(startIndex, currentIndex), valid));
      }
      else if (nextChar == 'u') {
        if (text.length() <= currentIndex + 1) {
          result.add(Pair.create(new TextRange(startIndex, text.length()), false));
          break;
        }

        final char hexOrBraceChar1 = text.charAt(++currentIndex);

        if (hexOrBraceChar1 == '{') {
          currentIndex++;

          final int closingBraceIndex = text.indexOf('}', currentIndex);
          if (closingBraceIndex == -1) {
            result.add(Pair.create(new TextRange(startIndex, currentIndex), false));
          }
          else {
            final String textInBrackets = text.substring(currentIndex, closingBraceIndex);
            currentIndex = closingBraceIndex + 1;

            final boolean valid = textInBrackets.length() > 0 && textInBrackets.length() <= 6 && isHexString(textInBrackets);
            result.add(Pair.create(new TextRange(startIndex, currentIndex), valid));
          }
        }
        else {
          //noinspection UnnecessaryLocalVariable
          final char hexChar1 = hexOrBraceChar1;

          if (text.length() <= currentIndex + 3) {
            result.add(Pair.create(new TextRange(startIndex, text.length()), false));
            break;
          }

          final char hexChar2 = text.charAt(++currentIndex);
          final char hexChar3 = text.charAt(++currentIndex);
          final char hexChar4 = text.charAt(++currentIndex);
          final boolean valid = StringUtil.isHexDigit(hexChar1) &&
                                StringUtil.isHexDigit(hexChar2) &&
                                StringUtil.isHexDigit(hexChar3) &&
                                StringUtil.isHexDigit(hexChar4);
          currentIndex++;
          result.add(Pair.create(new TextRange(startIndex, currentIndex), valid));
        }
      }
      else {
        // not 'x' and not 'u', just any other single character escape
        currentIndex++;
        result.add(Pair.create(new TextRange(startIndex, currentIndex), true));
      }
    }

    return result;
  }
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    return this;
  }

  @Override
  public TextRange getRangeInElement() {
    final TextRange textRange = getTextRange();

    DartReference[] dartReferences = PsiTreeUtil.getChildrenOfType(this, DartReference.class);
    if (dartReferences != null && dartReferences.length > 0) {
      TextRange lastReferenceRange = dartReferences[dartReferences.length - 1].getTextRange();
      return new UnfairTextRange(
        lastReferenceRange.getStartOffset() - textRange.getStartOffset(),
        lastReferenceRange.getEndOffset() - textRange.getEndOffset()
      );
    }

    return new UnfairTextRange(0, textRange.getEndOffset() - textRange.getStartOffset());
  }
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