Beispiel #1
0
 void visitNode(LighterASTNode element) {
   IElementType type = element.getTokenType();
   if (type == ASSIGNMENT_EXPRESSION) {
     mutatedRefs.add(tree.getChildren(element).get(0));
   } else if (type == RETURN_STATEMENT
       && JavaLightTreeUtil.findExpressionChild(tree, element) != null) {
     hasReturns = true;
   } else if ((type == PREFIX_EXPRESSION || type == POSTFIX_EXPRESSION)
       && isMutatingOperation(element)) {
     ContainerUtil.addIfNotNull(
         mutatedRefs, JavaLightTreeUtil.findExpressionChild(tree, element));
   } else if (isCall(element, type)) {
     calls.add(element);
   }
 }
 public static boolean leftMarkerIs(PsiBuilder builder, IElementType type) {
   LighterASTNode marker = builder.getLatestDoneMarker();
   return marker != null && marker.getTokenType() == type;
 }
  public static boolean parseAsTree(
      ErrorState state,
      final PsiBuilder builder,
      int level,
      final IElementType chunkType,
      boolean checkBraces,
      final Parser parser,
      final Parser eatMoreCondition) {
    final LinkedList<Pair<PsiBuilder.Marker, PsiBuilder.Marker>> parenList =
        new LinkedList<Pair<PsiBuilder.Marker, PsiBuilder.Marker>>();
    final LinkedList<Pair<PsiBuilder.Marker, Integer>> siblingList =
        new LinkedList<Pair<PsiBuilder.Marker, Integer>>();
    PsiBuilder.Marker marker = null;

    final Runnable checkSiblingsRunnable =
        new Runnable() {
          @Override
          public void run() {
            main:
            while (!siblingList.isEmpty()) {
              final Pair<PsiBuilder.Marker, PsiBuilder.Marker> parenPair = parenList.peek();
              final int rating = siblingList.getFirst().second;
              int count = 0;
              for (Pair<PsiBuilder.Marker, Integer> pair : siblingList) {
                if (pair.second != rating || parenPair != null && pair.first == parenPair.second)
                  break main;
                if (++count >= MAX_CHILDREN_IN_TREE) {
                  PsiBuilder.Marker parentMarker = pair.first.precede();
                  parentMarker.setCustomEdgeTokenBinders(
                      WhitespacesBinders.GREEDY_LEFT_BINDER, null);
                  while (count-- > 0) {
                    siblingList.removeFirst();
                  }
                  parentMarker.done(chunkType);
                  siblingList.addFirst(Pair.create(parentMarker, rating + 1));
                  continue main;
                }
              }
              break;
            }
          }
        };
    boolean checkParens = state.braces != null && checkBraces;
    int totalCount = 0;
    int tokenCount = 0;
    if (checkParens) {
      int tokenIdx = -1;
      while (builder.rawLookup(tokenIdx) == TokenType.WHITE_SPACE) tokenIdx--;
      LighterASTNode doneMarker =
          builder.rawLookup(tokenIdx) == state.braces[0].getLeftBraceType()
              ? builder.getLatestDoneMarker()
              : null;
      if (doneMarker != null
          && doneMarker.getStartOffset() == builder.rawTokenTypeStart(tokenIdx)
          && doneMarker.getTokenType() == TokenType.ERROR_ELEMENT) {
        parenList.add(
            Pair.create(((PsiBuilder.Marker) doneMarker).precede(), (PsiBuilder.Marker) null));
      }
    }
    while (true) {
      final IElementType tokenType = builder.getTokenType();
      if (checkParens
          && (tokenType == state.braces[0].getLeftBraceType()
              || tokenType == state.braces[0].getRightBraceType() && !parenList.isEmpty())) {
        if (marker != null) {
          marker.done(chunkType);
          siblingList.addFirst(Pair.create(marker, 1));
          marker = null;
          tokenCount = 0;
        }
        if (tokenType == state.braces[0].getLeftBraceType()) {
          final Pair<PsiBuilder.Marker, Integer> prev = siblingList.peek();
          parenList.addFirst(Pair.create(builder.mark(), prev == null ? null : prev.first));
        }
        checkSiblingsRunnable.run();
        builder.advanceLexer();
        if (tokenType == state.braces[0].getRightBraceType()) {
          final Pair<PsiBuilder.Marker, PsiBuilder.Marker> pair = parenList.removeFirst();
          pair.first.done(chunkType);
          // drop all markers inside parens
          while (!siblingList.isEmpty() && siblingList.getFirst().first != pair.second) {
            siblingList.removeFirst();
          }
          siblingList.addFirst(Pair.create(pair.first, 1));
          checkSiblingsRunnable.run();
        }
      } else {
        if (marker == null) {
          marker = builder.mark();
          marker.setCustomEdgeTokenBinders(WhitespacesBinders.GREEDY_LEFT_BINDER, null);
        }
        final boolean result =
            (!parenList.isEmpty() || eatMoreCondition.parse(builder, level + 1))
                && parser.parse(builder, level + 1);
        if (result) {
          tokenCount++;
          totalCount++;
        }
        if (!result) {
          break;
        }
      }

      if (tokenCount >= MAX_CHILDREN_IN_TREE && marker != null) {
        marker.done(chunkType);
        siblingList.addFirst(Pair.create(marker, 1));
        checkSiblingsRunnable.run();
        marker = null;
        tokenCount = 0;
      }
    }
    if (marker != null) {
      marker.drop();
    }
    for (Pair<PsiBuilder.Marker, PsiBuilder.Marker> pair : parenList) {
      pair.first.drop();
    }
    return totalCount != 0;
  }
  public static boolean exitErrorRecordingSection(
      PsiBuilder builder_,
      int level,
      boolean result,
      boolean pinned,
      @NotNull String sectionType,
      @Nullable Parser eatMore) {
    ErrorState state = ErrorState.get(builder_);

    Frame frame = state.levelCheck.pollLast();
    int initialOffset = builder_.getCurrentOffset();
    if (frame == null || level != frame.level || !sectionType.equals(frame.section)) {
      LOG.error(
          "Unbalanced error section: got "
              + new Frame().init(initialOffset, level, sectionType, "", 0)
              + ", expected "
              + frame);
      if (frame != null) state.FRAMES.recycle(frame);
      return result;
    }
    if (sectionType == _SECTION_AND_ || sectionType == _SECTION_NOT_) {
      state.predicateCount--;
      if (sectionType == _SECTION_NOT_) state.predicateSign = !state.predicateSign;
      state.FRAMES.recycle(frame);
      return result;
    }
    if (!result
        && !pinned
        && initialOffset == frame.offset
        && state.lastExpectedVariantOffset == frame.offset
        && frame.name != null
        && state.variants.size() - frame.variantCount > 1) {
      state.clearVariants(true, frame.variantCount);
      addVariantInner(state, initialOffset, frame.name);
    }
    if (sectionType == _SECTION_RECOVER_ && !state.suppressErrors && eatMore != null) {
      state.suppressErrors = true;
      final boolean eatMoreFlagOnce = !builder_.eof() && eatMore.parse(builder_, frame.level + 1);
      final int lastErrorPos = getLastVariantOffset(state, initialOffset);
      boolean eatMoreFlag =
          eatMoreFlagOnce || frame.offset == initialOffset && lastErrorPos > frame.offset;

      final LighterASTNode latestDoneMarker =
          (pinned || result) && (state.altMode || lastErrorPos > initialOffset) && eatMoreFlagOnce
              ? builder_.getLatestDoneMarker()
              : null;
      PsiBuilder.Marker extensionMarker = null;
      IElementType extensionTokenType = null;
      if (latestDoneMarker instanceof PsiBuilder.Marker) {
        extensionMarker = ((PsiBuilder.Marker) latestDoneMarker).precede();
        extensionTokenType = latestDoneMarker.getTokenType();
        ((PsiBuilder.Marker) latestDoneMarker).drop();
      }
      // advance to the last error pos
      // skip tokens until lastErrorPos. parseAsTree might look better here...
      int parenCount = 0;
      while (eatMoreFlag && builder_.getCurrentOffset() < lastErrorPos) {
        if (state.braces != null) {
          if (builder_.getTokenType() == state.braces[0].getLeftBraceType()) parenCount++;
          else if (builder_.getTokenType() == state.braces[0].getRightBraceType()) parenCount--;
        }
        builder_.advanceLexer();
        eatMoreFlag = parenCount != 0 || eatMore.parse(builder_, frame.level + 1);
      }
      boolean errorReported = frame.errorReportedAt == initialOffset;
      if (errorReported) {
        if (eatMoreFlag) {
          builder_.advanceLexer();
          parseAsTree(state, builder_, frame.level + 1, DUMMY_BLOCK, true, TOKEN_ADVANCER, eatMore);
        }
      } else if (eatMoreFlag) {
        String tokenText = builder_.getTokenText();
        String expectedText = state.getExpectedText(builder_);
        PsiBuilder.Marker mark = builder_.mark();
        builder_.advanceLexer();
        final String gotText =
            !expectedText.isEmpty() ? "got '" + tokenText + "'" : "'" + tokenText + "' unexpected";
        mark.error(expectedText + gotText);
        parseAsTree(state, builder_, frame.level + 1, DUMMY_BLOCK, true, TOKEN_ADVANCER, eatMore);
        errorReported = true;
      } else if (eatMoreFlagOnce || (!result && frame.offset != builder_.getCurrentOffset())) {
        reportError(state, builder_, true);
        errorReported = true;
      }
      if (extensionMarker != null) {
        extensionMarker.done(extensionTokenType);
      }
      state.suppressErrors = false;
      if (errorReported || result) {
        state.clearVariants(true, 0);
        state.clearVariants(false, 0);
        state.lastExpectedVariantOffset = -1;
      }
      if (!result && eatMoreFlagOnce && frame.offset != builder_.getCurrentOffset()) result = true;
    } else if (!result && pinned && frame.errorReportedAt < 0) {
      // do not report if there're errors after current offset
      if (getLastVariantOffset(state, initialOffset) == initialOffset) {
        // do not force, inner recoverRoot might have skipped some tokens
        if (reportError(state, builder_, false)) {
          frame.errorReportedAt = initialOffset;
        }
      }
    }
    // propagate errorReportedAt up the stack to avoid duplicate reporting
    Frame prevFrame = state.levelCheck.isEmpty() ? null : state.levelCheck.getLast();
    if (prevFrame != null && prevFrame.errorReportedAt < frame.errorReportedAt)
      prevFrame.errorReportedAt = frame.errorReportedAt;
    state.FRAMES.recycle(frame);
    return result;
  }