Examples of BidiRun

com.ibm.icu.text.BidiRun
A BidiRun represents a sequence of characters at the same embedding level. The Bidi algorithm decomposes a piece of text into sequences of characters at the same embedding level, each such sequence is called a run.
A BidiRun represents such a run by storing its essential properties, but does not duplicate the characters which form the run.
The "limit" of the run is the position just after the last character, i.e., one more than that position.
This class has no public constructor, and its members cannot be modified by users. @see com.ibm.icu.text.Bidi @stable ICU 3.8

Examples of com.ibm.icu.text.BidiRun

            } catch (IllegalStateException e) {
                errln("Bidi.countRuns(test[" + testNumber + "]) failed");
            }
        }


        BidiRun run;


        for (logicalIndex = 0; logicalIndex < len; ) {
            level = bidi.getLevelAt(logicalIndex);
            run = bidi.getLogicalRun(logicalIndex);
            logicalIndex = run.getLimit();
            level2 = run.getEmbeddingLevel();
            assertEquals("Logical " + run.toString() +
                         " in test[" + testNumber + "]: wrong level",
                         level, level2);
            if (--runCount < 0) {
                errln("Bidi.getLogicalRun(test[" + testNumber
                      + "]): wrong number of runs compared to Bidi.countRuns() = "

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Examples of com.ibm.icu.text.BidiRun

            runCount = 0;
        }


        logln("\n---- " + runCount + " runs");
        visualIndex = 0;
        BidiRun run;
        for (i = 0; i < runCount; ++i) {
            run = bidi.getVisualRun(i);
            if (run == null) {
                errln("null visual run encountered at index " + i +
                      ", in test " + testNumber);
                continue;
            }
            odd = run.isOddRun();
            logicalStart = run.getStart();
            runLength = run.getLength();
            log("(" + (run.isOddRun() ? "R" : "L"));
            log(" @" + run.getStart() + '[' + run.getLength() + "])\n");
            if (!odd) {
                do {    /* LTR */
                    visualMap4[visualIndex++] = logicalStart++;
                } while (--runLength > 0);
            } else {

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Examples of com.ibm.icu.text.BidiRun

        /* check paragraph count and boundaries */
        if (paraCount != (count = bidi.countParagraphs())) {
            errln("1st Bidi.countParagraphs returned " + count + ", should be " +
                  paraCount);
        }
        BidiRun run;
        for (i = 0; i < paraCount; i++) {
            run = bidi.getParagraphByIndex(i);
            paraStart = run.getStart();
            paraLimit = run.getLimit();
            if ((paraStart != paraBounds[i]) ||
                (paraLimit != paraBounds[i + 1])) {
                errln("Found boundaries of paragraph " + i + ": " +
                      paraStart + "-" + paraLimit + "; expected: " +
                      paraBounds[i] + "-" + paraBounds[i + 1]);
            }
        }


        /* check with last paragraph not terminated by B */
        char[] chars = text.toCharArray();
        chars[chars.length - 1] = 'L';
        src = new String(chars);
        try {
            bidi.setPara(src, Bidi.LTR, null);
        } catch (IllegalArgumentException e) {
            errln("2nd Bidi.setPara failed, paraLevel = " + Bidi.LTR);
        }
        if (paraCount != (count = bidi.countParagraphs())) {
            errln("2nd Bidi.countParagraphs returned " + count +
                  ", should be " + paraCount);
        }
        i = paraCount - 1;
        run = bidi.getParagraphByIndex(i);
        paraStart = run.getStart();
        paraLimit = run.getLimit();
        if ((paraStart != paraBounds[i]) ||
            (paraLimit != paraBounds[i + 1])) {
            errln("2nd Found boundaries of paragraph " + i + ": " +
                  paraStart + "-" + paraLimit + "; expected: " +
                  paraBounds[i] + "-" + paraBounds[i + 1]);
        }


        /* check paraLevel for all paragraphs under various paraLevel specs */
        for (k = 0; k < 6; k++) {
            try {
                bidi.setPara(src, paraLevels[k], null);
            } catch (IllegalArgumentException e) {
                errln("3nd Bidi.setPara failed, paraLevel = " + paraLevels[k]);
            }
            for (i = 0; i < paraCount; i++) {
                paraIndex = bidi.getParagraphIndex(paraBounds[i]);
                run = bidi.getParagraph(paraBounds[i]);
                if (paraIndex != i) {
                    errln("#1 For paraLevel = " + paraLevels[k] +
                          " paragraph = " + i + ", found paragraph" +
                          " index = " + paraIndex + " expected = " + i);
                }
                gotLevel = run.getEmbeddingLevel();
                if (gotLevel != multiLevels[k][i]) {
                    errln("#2 For paraLevel = " + paraLevels[k] +
                          " paragraph = " + i + ", found level = " + gotLevel +
                          ", expected = " + multiLevels[k][i]);
                }
            }
            gotLevel = bidi.getParaLevel();
            if (gotLevel != multiLevels[k][0]) {
                errln("#3 For paraLevel = " + paraLevels[k] +
                      " getParaLevel = " + gotLevel + ", expected " +
                      multiLevels[k][0]);
            }
        }


        /* check that the result of Bidi.getParaLevel changes if the first
         * paragraph has a different level
         */
        chars[0] = '\u05d2';            /* Hebrew letter Gimel */
        src = new String(chars);
        try {
            bidi.setPara(src, Bidi.LEVEL_DEFAULT_LTR, null);
        } catch (IllegalArgumentException e) {
            errln("Bidi.setPara failed, paraLevel = " + Bidi.LEVEL_DEFAULT_LTR);
        }
        gotLevel = bidi.getParaLevel();
        if (gotLevel != Bidi.RTL) {
            errln("#4 For paraLevel = Bidi.LEVEL_DEFAULT_LTR getParaLevel = " +
                  gotLevel + ", expected = " + Bidi.RTL);
        }


        /* check that line cannot overlap paragraph boundaries */
        bidiLine = new Bidi();
        i = paraBounds[1];
        k = paraBounds[2] + 1;
        try {
            bidiLine = bidi.setLine(i, k);
            errln("For line limits " + i + "-" + k
                    + " got success, while expected failure");
        } catch (Exception e) {}


        i = paraBounds[1];
        k = paraBounds[2];
        try {
            bidiLine = bidi.setLine(i, k);
        } catch (Exception e) {
            errln("For line limits " + i + "-" + k + " got failure");
        }


        /* check level of block separator at end of paragraph when orderParagraphsLTR==FALSE */
        try {
            bidi.setPara(src, Bidi.RTL, null);
        } catch (IllegalArgumentException e) {
            errln("Bidi.setPara failed, paraLevel = " + Bidi.RTL);
        }
        /* get levels through para Bidi block */
        try {
            gotLevels = bidi.getLevels();
        } catch (Exception e) {
            errln("Error on Bidi.getLevels");
            gotLevels = new byte[bidi.getLength()];
            Arrays.fill(gotLevels, (byte)-1);
        }
        for (i = 26; i < 32; i++) {
            if (gotLevels[i] != Bidi.RTL) {
                errln("For char " + i + "(0x" + Utility.hex(chars[i]) +
                      "), level = " + gotLevels[i] + ", expected = " + Bidi.RTL);
            }
        }
        /* get levels through para Line block */
        i = paraBounds[1];
        k = paraBounds[2];
        try {
            bidiLine = bidi.setLine(i, k);
        } catch (Exception e) {
            errln("For line limits " + i + "-" + k + " got failure");
            return;
        }
        paraIndex = bidiLine.getParagraphIndex(i);
        run = bidiLine.getParagraph(i);
        try {
            gotLevels = bidiLine.getLevels();
        } catch (Exception e) {
            errln("Error on bidiLine.getLevels");
            gotLevels = new byte[bidiLine.getLength()];
            Arrays.fill(gotLevels, (byte)-1);
        }
        length = bidiLine.getLength();
        gotLevel = run.getEmbeddingLevel();
        if ((gotLevel != Bidi.RTL) || (gotLevels[length - 1] != Bidi.RTL)) {
            errln("For paragraph " + paraIndex + " with limits " +
                  run.getStart() + "-" + run.getLimit() +
                  ", paraLevel = " + gotLevel +
                  "expected = " + Bidi.RTL +
                  ", level of separator = " + gotLevels[length - 1] +
                  " expected = " + Bidi.RTL);
        }
        orderParagraphsLTR = bidi.isOrderParagraphsLTR();
        assertFalse("orderParagraphsLTR is true", orderParagraphsLTR);
        bidi.orderParagraphsLTR(true);
        orderParagraphsLTR = bidi.isOrderParagraphsLTR();
        assertTrue("orderParagraphsLTR is false", orderParagraphsLTR);


        /* check level of block separator at end of paragraph when orderParagraphsLTR==TRUE */
        try {
            bidi.setPara(src, Bidi.RTL, null);
        } catch (IllegalArgumentException e) {
            errln("Bidi.setPara failed, paraLevel = " + Bidi.RTL);
        }
        /* get levels through para Bidi block */
        try {
            gotLevels = bidi.getLevels();
        } catch (Exception e) {
            errln("Error on Bidi.getLevels");
            gotLevels = new byte[bidi.getLength()];
            Arrays.fill(gotLevels, (byte)-1);
        }
        for (i = 26; i < 32; i++) {
            if (gotLevels[i] != 0) {
                errln("For char " + i + "(0x" + Utility.hex(chars[i]) +
                      "), level = "+ gotLevels[i] + ", expected = 0");
            }
        }
        /* get levels through para Line block */
        i = paraBounds[1];
        k = paraBounds[2];
        paraStart = run.getStart();
        paraLimit = run.getLimit();
        try {
            bidiLine = bidi.setLine(paraStart, paraLimit);
        } catch (Exception e) {
            errln("For line limits " + paraStart + "-" + paraLimit +
                  " got failure");
        }
        paraIndex = bidiLine.getParagraphIndex(i);
        run = bidiLine.getParagraph(i);
        try {
            gotLevels = bidiLine.getLevels();
        } catch (Exception e) {
            errln("Error on bidiLine.getLevels");
            gotLevels = new byte[bidiLine.getLength()];
            Arrays.fill(gotLevels, (byte)-1);
        }
        length = bidiLine.getLength();
        gotLevel = run.getEmbeddingLevel();
        if ((gotLevel != Bidi.RTL) || (gotLevels[length - 1] != 0)) {
            err("\nFor paragraph " + paraIndex + " with limits " +
                run.getStart() + "-" + run.getLimit() +
                ", paraLevel = " + gotLevel + "expected = " + Bidi.RTL +
                ", level of separator = " + gotLevels[length - 1] +
                " expected = 0\nlevels = ");
            for (count = 0; count < length; count++) {
                errcont(gotLevels[count] + "  ");

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Examples of com.ibm.icu.text.BidiRun

        errcontln("paraLevel: " + Byte.toString(bidi.getParaLevel()));
        errcontln("reorderingMode: " + modeToString(bidi.getReorderingMode()));
        errcontln("reorderingOptions: " + spOptionsToString(bidi.getReorderingOptions()));
        errcont("Runs: " + runCount + " => logicalStart.length/level: ");
        for (int i = 0; i < runCount; i++) {
            BidiRun run;
            run = bidi.getVisualRun(i);
            errcont(" " + run.getStart() + "." + run.getLength() + "/" +
                    run.getEmbeddingLevel());
        }
        errcont("\n");
    }

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