Package com.intellij.lang.folding

Examples of com.intellij.lang.folding.FoldingDescriptor

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        PsiElement child = psiElement.getFirstChild();
        while (child != null) {
            if (child instanceof PsiComment) {
                String text = child.getText();
                if (text.startsWith("/*") && text.indexOf('\n') > -1) {
                    FoldingDescriptor foldingDescriptor = new FoldingDescriptor(
                            child.getNode(),
                            child.getTextRange());

                    foldingDescriptors.add(foldingDescriptor);
                }
            }
            if (child instanceof BasePsiElement) {
                BasePsiElement basePsiElement = (BasePsiElement) child;
                ElementType elementType = basePsiElement.getElementType();
                int blockEndOffset = basePsiElement.getTextOffset() + basePsiElement.getTextLength();

                boolean folded = false;

                if (elementType.is(ElementTypeAttribute.FOLDABLE_BLOCK)) {
                    BasePsiElement subjectPsiElement = basePsiElement.lookupFirstPsiElement(ElementTypeAttribute.SUBJECT);
                    if (subjectPsiElement == null) {
                        PsiElement firstChild = basePsiElement.getFirstChild();
                        if (firstChild instanceof TokenPsiElement) {
                            subjectPsiElement = (BasePsiElement) firstChild;
                        }
                    }
                    if (subjectPsiElement != null && subjectPsiElement.getParent() == basePsiElement) {

                        int subjectEndOffset = subjectPsiElement.getTextOffset() + subjectPsiElement.getTextLength();

                        int subjectLineNumber = document.getLineNumber(subjectEndOffset);
                        int blockEndOffsetLineNumber = document.getLineNumber(blockEndOffset);

                        if (subjectLineNumber < blockEndOffsetLineNumber) {
                            TextRange textRange = new TextRange(subjectEndOffset, blockEndOffset);

                            FoldingDescriptor foldingDescriptor = new FoldingDescriptor(basePsiElement.getNode(), textRange);

                            foldingDescriptors.add(foldingDescriptor);
                            nestingIndex++;
                            folded = true;
                        }
                    }
                }

                if (!folded && elementType.is(ElementTypeAttribute.STATEMENT)) {
                    if (basePsiElement.containsLineBreaks()) {
                        TextRange textRange = null;

                        BasePsiElement firstPsiElement = basePsiElement.lookupFirstLeafPsiElement();
                        int firstElementEndOffset = firstPsiElement.getTextOffset() + firstPsiElement.getTextLength();
                        int firstElementLineNumber = document.getLineNumber(firstElementEndOffset);


                        BasePsiElement subjectPsiElement = basePsiElement.lookupFirstPsiElement(ElementTypeAttribute.SUBJECT);
                        if (subjectPsiElement != null && subjectPsiElement.getParent() == basePsiElement) {
                            int subjectEndOffset = subjectPsiElement.getTextOffset() + subjectPsiElement.getTextLength();
                            int subjectLineNumber = document.getLineNumber(subjectEndOffset);

                            if (subjectLineNumber == firstElementLineNumber) {
                                textRange = new TextRange(subjectEndOffset, blockEndOffset);
                            }
                        }

                        if (textRange == null) {
                            textRange = new TextRange(firstElementEndOffset, blockEndOffset);
                        }

                        FoldingDescriptor foldingDescriptor = new FoldingDescriptor(basePsiElement.getNode(), textRange);
                        foldingDescriptors.add(foldingDescriptor);
                        nestingIndex++;
                    }
                }

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                            rootPsiElement.getAstNode(),
                            rootPsiElement.getTextRange());
                foldingDescriptors.add(rootFoldingDescriptor);*/

                for (ExecutablePsiElement executablePsiElement : rootPsiElement.getExecutablePsiElements()) {
                    FoldingDescriptor foldingDescriptor = new FoldingDescriptor(
                            executablePsiElement.getNode(),
                            executablePsiElement.getTextRange());
                    descriptors.add(foldingDescriptor);
                }
            } else if (child instanceof ChameleonPsiElement) {
                ChameleonPsiElement chameleonPsiElement = (ChameleonPsiElement) child;
                FoldingDescriptor foldingDescriptor = new FoldingDescriptor(
                        chameleonPsiElement.getNode(),
                        chameleonPsiElement.getTextRange());
                descriptors.add(foldingDescriptor);


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  }

  private static void buildFolding(ASTNode node, List<FoldingDescriptor> list) {
    if (node.getElementType() == HaxeTokenTypes.BLOCK_STATEMENT) {
      final TextRange range = node.getTextRange();
      list.add(new FoldingDescriptor(node, range));
    }
    for (ASTNode child : node.getChildren(null)) {
      buildFolding(child, list);
    }
  }
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    private static ASTNode doAppend(final ASTNode node, final Document document, final List<FoldingDescriptor> descriptors) {

        if (node.getElementType() == NginxElementTypes.DIRECTIVE) {
            //let's fold multiline directives only
            if (document.getLineNumber(node.getStartOffset()) < document.getLineNumber(node.getTextRange().getEndOffset())) {
                descriptors.add(new FoldingDescriptor(node, node.getTextRange()));
            }
        }

        if (node.getElementType() == NginxElementTypes.FILE) {
            node.getPsi().getFirstChild();
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                if (foldToVal)
                    checkFoldToVal(var, range, node);

                if (doFold && rangeMakesSenseToFold(range.get())) {
                    descriptors.add(new FoldingDescriptor(node.get(), range.get(), group));
                }
            }

            for (final PsiForeachStatement iter : iters) {
                PsiParameter param = iter.getIterationParameter();
                PsiType vartype = param.getType();
                PsiType iterType = (PsiType)iter.getIteratedValue().getType();

                if ((iterType instanceof PsiClassType && isIterableOf((PsiClassType)iterType, vartype))
                        ||
                        (iterType instanceof PsiArrayType && ((PsiArrayType)iterType).getComponentType().equals(vartype))
                    ) {
                    Ref<TextRange> range = new Ref<TextRange>(param.getTypeElement().getTextRange());
                    Ref<ASTNode> node = new Ref<ASTNode>(param.getTypeElement().getNode());
                    if (foldToVal)
                        checkFoldToVal(param, range, node);
                    if (rangeMakesSenseToFold(range.get()))
                        descriptors.add(new FoldingDescriptor(node.get(), range.get(), group));
                }
            }
        }
        return descriptors.toArray(new FoldingDescriptor[descriptors.size()]);
    }
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      final TextRange fileHeaderCommentsRange = new UnfairTextRange(firstComment.getTextOffset(), nextAfterComments.getTextOffset());
      if (fileHeaderCommentsRange.getLength() > 1 &&
          document.getLineNumber(fileHeaderCommentsRange.getEndOffset()) >
          document.getLineNumber(fileHeaderCommentsRange.getStartOffset())) {
        if (!containsCustomRegionMarker) {
          descriptors.add(new FoldingDescriptor(dartFile, fileHeaderCommentsRange));
        }
        return fileHeaderCommentsRange;
      }
    }
    return null;
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    }

    if (lastImport != firstImport) {
      final int startOffset = firstImport.getTextOffset() + firstImport.getFirstChild().getTextLength() + 1; // after "import " or "export "
      final int endOffset = lastImport.getTextRange().getEndOffset();
      descriptors.add(new FoldingDescriptor(firstImport, TextRange.create(startOffset, endOffset)));
    }
  }
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      }

      final IElementType elementType = psiElement.getNode().getElementType();
      if ((elementType == DartTokenTypesSets.MULTI_LINE_DOC_COMMENT || elementType == DartTokenTypesSets.MULTI_LINE_COMMENT)
          && !isCustomRegionElement(psiElement)) {
        descriptors.add(new FoldingDescriptor(psiElement, psiElement.getTextRange()));
      }
      else if (elementType == DartTokenTypesSets.SINGLE_LINE_DOC_COMMENT || elementType == DartTokenTypesSets.SINGLE_LINE_COMMENT) {
        final PsiElement firstCommentInSequence = psiElement;
        PsiElement lastCommentInSequence = firstCommentInSequence;
        PsiElement nextElement = firstCommentInSequence;
        boolean containsCustomRegionMarker = isCustomRegionElement(nextElement);
        while (iter.hasNext() && (nextElement = nextElement.getNextSibling()) != null &&
               (nextElement instanceof PsiWhiteSpace || nextElement.getNode().getElementType() == elementType)) {
          if (nextElement.getNode().getElementType() == elementType) {
            // advance iterator to skip processed comments sequence
            iter.next();
            lastCommentInSequence = nextElement;
            containsCustomRegionMarker |= isCustomRegionElement(nextElement);
          }
        }

        if (lastCommentInSequence != firstCommentInSequence && !containsCustomRegionMarker) {
          final TextRange range =
            TextRange.create(firstCommentInSequence.getTextOffset(), lastCommentInSequence.getTextRange().getEndOffset());
          descriptors.add(new FoldingDescriptor(firstCommentInSequence, range));
        }
      }
    }
  }
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  private static void foldClassBodies(@NotNull final List<FoldingDescriptor> descriptors, @NotNull final DartFile dartFile) {
    for (DartClassDefinition dartClass : PsiTreeUtil.getChildrenOfTypeAsList(dartFile, DartClassDefinition.class)) {
      final DartClassBody body = dartClass.getClassBody();
      if (body != null && body.getTextLength() > 2) {
        descriptors.add(new FoldingDescriptor(body, body.getTextRange()));
      }
    }
  }
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  private static void foldFunctionBody(@NotNull final List<FoldingDescriptor> descriptors,
                                       @NotNull final PsiElement dartComponentOrOperatorDeclaration) {
    final DartFunctionBody functionBody = PsiTreeUtil.getChildOfType(dartComponentOrOperatorDeclaration, DartFunctionBody.class);
    final DartBlock block = functionBody == null ? null : functionBody.getBlock();
    if (block != null && block.getTextLength() > 2) {
      descriptors.add(new FoldingDescriptor(functionBody, block.getTextRange()));
    }
  }
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