Package org.joni

Examples of org.joni.Regex

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     */
    @JRubyMethod(name = "sub!", frame = true, reads = BACKREF, writes = BACKREF)
    public IRubyObject sub_bang(ThreadContext context, IRubyObject arg0, Block block) {
        if (block.isGiven()) {
            RubyRegexp rubyRegex = getPattern(arg0, true);
            Regex regex = rubyRegex.getPattern();
            return subBangCommon(regex, context, true, rubyRegex, block, null, false);
        } else {
            throw context.getRuntime().newArgumentError("wrong number of arguments (1 for 2)");
        }
    }
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     */
    @JRubyMethod(name = "sub!", frame = true, reads = BACKREF, writes = BACKREF)
    public IRubyObject sub_bang(ThreadContext context, IRubyObject arg0, IRubyObject arg1, Block block) {
        RubyString repl = arg1.convertToString();
        RubyRegexp rubyRegex = getPattern(arg0, true);
        Regex regex = rubyRegex.getPattern();
        return subBangCommon(regex, context, false, rubyRegex, block, repl, repl.isTaint());
    }
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    }

    private final IRubyObject gsub(ThreadContext context, IRubyObject arg0, Block block, final boolean bang) {
        if (block.isGiven()) {
            RubyRegexp rubyRegex = getPattern(arg0, true);
            Regex regex = rubyRegex.getPattern();
            return gsubCommon(regex, context, bang, true, rubyRegex, block, null, false);
        } else {
            throw context.getRuntime().newArgumentError("wrong number of arguments (1 for 2)");
        }
    }
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    }

    private final IRubyObject gsub(ThreadContext context, IRubyObject arg0, IRubyObject arg1, Block block, final boolean bang) {
        IRubyObject repl = arg1.convertToString();
        RubyRegexp rubyRegex = getPattern(arg0, true);
        Regex regex = rubyRegex.getPattern();
        return gsubCommon(regex, context, bang, false, rubyRegex, block, repl, repl.isTaint());
    }
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    }
   
    private RubyArray split(ThreadContext context, IRubyObject pat, boolean limit, int lim, int i) {
        Ruby runtime = context.getRuntime();

        final Regex regex = getPattern(pat, true).getPattern();
        int beg, end, start;

        int begin = value.begin;
        start = begin;
        beg = 0;
       
        int range = begin + value.realSize;
        byte[]bytes = value.bytes;
        final Matcher matcher = regex.matcher(bytes, begin, range);
       
        boolean lastNull = false;
        RubyArray result = runtime.newArray();
        final Encoding enc = regex.getEncoding();
       
        if (regex.numberOfCaptures() == 0) { // shorter path, no captures defined, no region will be returned
            while ((end = matcher.search(start, range, Option.NONE)) >= 0) {
                if (start == end + begin && matcher.getBegin() == matcher.getEnd()) {
                    if (value.realSize == 0) {
                        result.append(newEmptyString(runtime, getMetaClass()));
                        break;
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    public IRubyObject scan(ThreadContext context, IRubyObject arg, Block block) {
        Ruby runtime = context.getRuntime();
        Frame frame = context.getPreviousFrame();
       
        final RubyRegexp rubyRegex = getPattern(arg, true);
        final Regex regex = rubyRegex.getPattern();
       
        int range = value.begin + value.realSize;
        final Matcher matcher = regex.matcher(value.bytes, value.begin, range);
        matcher.value = 0; // implicit start argument to scanOnce(NG)
       
        IRubyObject result;
        if (!block.isGiven()) {
            RubyArray ary = runtime.newArray();
           
            if (regex.numberOfCaptures() == 0) {
                while ((result = scanOnceNG(rubyRegex, matcher, range)) != null) ary.append(result);
            } else {
                while ((result = scanOnce(rubyRegex, matcher, range)) != null) ary.append(result);
            }

            if (ary.size() > 0) {
                rubyRegex.updateBackRef(context, this, frame, matcher);
            } else {
                frame.setBackRef(runtime.getNil());
            }
            return ary;
        } else {
            byte[]bytes = value.bytes;
            int size = value.realSize;
            RubyMatchData match = null;
           
            if (regex.numberOfCaptures() == 0) {
                while ((result = scanOnceNG(rubyRegex, matcher, range)) != null) {
                    match = rubyRegex.updateBackRef(context, this, frame, matcher);
                    match.use();
                    block.yield(context, result);
                    modifyCheck(bytes, size);
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        if (isLiteral()) throw getRuntime().newSecurityError("can't modify literal regexp");

        setKCode(options);

        Map<ByteList, Regex> cache = getPatternCache();
        Regex pat = cache.get(bytes);

        if (pat != null &&
            pat.getEncoding() == kcode.getEncoding() &&
            pat.getOptions() == (options & 0xf) &&
            ((pat.getUserOptions() & REGEX_QUOTED) != 0) == quote) { // cache hit
            pattern = pat;
        } else {
            if (quote) bytes = quote(bytes, getRuntime().getKCode());
            makeRegexp(bytes, bytes.begin, bytes.realSize, options & 0xf, kcode.getEncoding());
            if (quote) pattern.setUserOptions(REGEX_QUOTED);
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        str = bytes;
    }

    private void makeRegexp(ByteList bytes, int start, int len, int flags, Encoding enc) {
        try {
            pattern = new Regex(bytes.bytes, start, start + len, flags, enc, Syntax.DEFAULT, this);
        } catch(Exception e) {
            rb_reg_raise(bytes.bytes, start, len, e.getMessage(), flags);
        }
    }
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                    continue again;
                }

                if (bytes[ptr] == ':' && bytes[ptr + len - 1] == ')') {
                    try {
                        new Regex(bytes, ++ptr, ptr + (len-=2) ,Option.DEFAULT, kcode.getEncoding(), Syntax.DEFAULT);
                        err = false;
                    } catch (JOniException e) {
                        err = true;
                    }
                }
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    private IRubyObject scan(IRubyObject regex, boolean succptr, boolean getstr, boolean headonly) {
        if (!(regex instanceof RubyRegexp)) throw getRuntime().newTypeError("wrong argument type " + regex.getMetaClass() + " (expected Regexp)");
        check();
       
        Regex pattern = ((RubyRegexp)regex).getPattern();

        clearMatched();
        int rest = str.getByteList().realSize - pos;
        if (rest < 0) return getRuntime().getNil();

        ByteList value = str.getByteList();
        Matcher matcher = pattern.matcher(value.bytes, value.begin + pos, value.begin + value.realSize);

        final int ret;
        if (headonly) {
            ret = matcher.match(value.begin + pos, value.begin + value.realSize, Option.NONE);           
        } else {
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