Examples with ReversedList org.apache.groovy.util.ReversedList used on opensource projects

Example 1 with ReversedList

use of org.apache.groovy.util.ReversedList in project groovy by apache.

the class SmartDocumentFilter method findTokensToRender.

private List<Token> findTokensToRender(List<Token> tokenList) {
    final Tuple2<Integer, Integer> renderRange = getRenderRange();
    if (null != renderRange) {
        long startLine = lineNumber(renderRange.getV1());
        long stopLine = lineNumber(renderRange.getV2());
        // should never happen
        if (startLine < 0 || stopLine < 0)
            return tokenList;
        return tokenList.stream().filter(e -> e.getLine() >= startLine && PositionConfigureUtils.endPosition(e).getV1() <= stopLine).collect(Collectors.toList());
    }
    List<Token> tmpLatestTokenList = filterNewlines(this.latestTokenList);
    int latestTokenListSize = tmpLatestTokenList.size();
    if (0 == latestTokenListSize) {
        return tokenList;
    }
    List<Token> tmpTokenList = filterNewlines(tokenList);
    int tmpTokenListSize = tmpTokenList.size();
    if (0 == tmpTokenListSize) {
        return tokenList;
    }
    int startTokenIndex = 0;
    int minSize = Math.min(tmpTokenListSize, latestTokenListSize);
    for (int i = 0; i < minSize; i++) {
        Token token = tmpTokenList.get(i);
        Token latestToken = tmpLatestTokenList.get(i);
        if (token.getType() == latestToken.getType() && token.getStartIndex() == latestToken.getStartIndex() && token.getStopIndex() == latestToken.getStopIndex()) {
            continue;
        }
        startTokenIndex = i;
        break;
    }
    List<Token> newTokenList = new ReversedList<>(tmpTokenList);
    List<Token> newLatestTokenList = new ReversedList<>(tmpLatestTokenList);
    int stopTokenIndex = tmpTokenListSize;
    Token lastToken = newTokenList.get(0);
    Token lastLatestToken = newLatestTokenList.get(0);
    for (int i = 0; i < minSize; i++) {
        Token token = newTokenList.get(i);
        Token latestToken = newLatestTokenList.get(i);
        if ((token.getType() == latestToken.getType()) && (token.getStartIndex() - lastToken.getStartIndex()) == (latestToken.getStartIndex() - lastLatestToken.getStartIndex()) && ((token.getStopIndex() - lastToken.getStopIndex()) == (latestToken.getStopIndex() - lastLatestToken.getStopIndex()))) {
            continue;
        }
        stopTokenIndex = tmpTokenListSize - i;
        break;
    }
    if (startTokenIndex == stopTokenIndex) {
        return tmpTokenListSize != latestTokenListSize ? tokenList : Collections.emptyList();
    } else if (startTokenIndex < stopTokenIndex) {
        return tmpTokenList.subList(startTokenIndex, stopTokenIndex);
    }
    // should never reach here. If unexpected error occurred, it's better to render all tokens
    return tokenList;
}