blob: 720961798580cc840971c77754cc95512ca2d2a3 [file] [log] [blame]
/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "PathOpsExtendedTest.h"
#include "PathOpsThreadedCommon.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkForceLinking.h"
#include "SkMatrix.h"
#include "SkMutex.h"
#include "SkPaint.h"
#include "SkRTConf.h"
#include "SkStream.h"
#include <stdlib.h>
#ifdef SK_BUILD_FOR_MAC
#include <sys/sysctl.h>
#endif
__SK_FORCE_IMAGE_DECODER_LINKING;
DEFINE_bool2(runFail, f, false, "run tests known to fail.");
DEFINE_bool2(runBinary, f, false, "run tests known to fail binary sect.");
static const char marker[] =
"</div>\n"
"\n"
"<script type=\"text/javascript\">\n"
"\n"
"var testDivs = [\n";
static const char* opStrs[] = {
"kDifference_SkPathOp",
"kIntersect_SkPathOp",
"kUnion_SkPathOp",
"kXor_PathOp",
"kReverseDifference_SkPathOp",
};
static const char* opSuffixes[] = {
"d",
"i",
"u",
"o",
};
#if DEBUG_SHOW_TEST_NAME
static void showPathData(const SkPath& path) {
SkPath::RawIter iter(path);
uint8_t verb;
SkPoint pts[4];
SkPoint firstPt = {0, 0}, lastPt = {0, 0};
bool firstPtSet = false;
bool lastPtSet = true;
while ((verb = iter.next(pts)) != SkPath::kDone_Verb) {
switch (verb) {
case SkPath::kMove_Verb:
if (firstPtSet && lastPtSet && firstPt != lastPt) {
SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", lastPt.fX, lastPt.fY,
firstPt.fX, firstPt.fY);
lastPtSet = false;
}
firstPt = pts[0];
firstPtSet = true;
continue;
case SkPath::kLine_Verb:
SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", pts[0].fX, pts[0].fY,
pts[1].fX, pts[1].fY);
lastPt = pts[1];
lastPtSet = true;
break;
case SkPath::kQuad_Verb:
SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}},\n",
pts[0].fX, pts[0].fY, pts[1].fX, pts[1].fY, pts[2].fX, pts[2].fY);
lastPt = pts[2];
lastPtSet = true;
break;
case SkPath::kConic_Verb:
SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}}, //weight=%1.9g\n",
pts[0].fX, pts[0].fY, pts[1].fX, pts[1].fY, pts[2].fX, pts[2].fY,
iter.conicWeight());
lastPt = pts[2];
lastPtSet = true;
break;
case SkPath::kCubic_Verb:
SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}},\n",
pts[0].fX, pts[0].fY, pts[1].fX, pts[1].fY, pts[2].fX, pts[2].fY,
pts[3].fX, pts[3].fY);
lastPt = pts[3];
lastPtSet = true;
break;
case SkPath::kClose_Verb:
if (firstPtSet && lastPtSet && firstPt != lastPt) {
SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", lastPt.fX, lastPt.fY,
firstPt.fX, firstPt.fY);
}
firstPtSet = lastPtSet = false;
break;
default:
SkDEBUGFAIL("bad verb");
return;
}
}
if (firstPtSet && lastPtSet && firstPt != lastPt) {
SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", lastPt.fX, lastPt.fY,
firstPt.fX, firstPt.fY);
}
}
#endif
void showOp(const SkPathOp op) {
switch (op) {
case kDifference_SkPathOp:
SkDebugf("op difference\n");
break;
case kIntersect_SkPathOp:
SkDebugf("op intersect\n");
break;
case kUnion_SkPathOp:
SkDebugf("op union\n");
break;
case kXOR_SkPathOp:
SkDebugf("op xor\n");
break;
case kReverseDifference_SkPathOp:
SkDebugf("op reverse difference\n");
break;
default:
SkASSERT(0);
}
}
#if DEBUG_SHOW_TEST_NAME
static char hexorator(int x) {
if (x < 10) {
return x + '0';
}
x -= 10;
SkASSERT(x < 26);
return x + 'A';
}
#endif
void ShowTestName(PathOpsThreadState* state, int a, int b, int c, int d) {
#if DEBUG_SHOW_TEST_NAME
state->fSerialNo[0] = hexorator(state->fA);
state->fSerialNo[1] = hexorator(state->fB);
state->fSerialNo[2] = hexorator(state->fC);
state->fSerialNo[3] = hexorator(state->fD);
state->fSerialNo[4] = hexorator(a);
state->fSerialNo[5] = hexorator(b);
state->fSerialNo[6] = hexorator(c);
state->fSerialNo[7] = hexorator(d);
state->fSerialNo[8] = '\0';
SkDebugf("%s\n", state->fSerialNo);
if (strcmp(state->fSerialNo, state->fKey) == 0) {
SkDebugf("%s\n", state->fPathStr);
}
#endif
}
const int bitWidth = 64;
const int bitHeight = 64;
static void scaleMatrix(const SkPath& one, const SkPath& two, SkMatrix& scale) {
SkRect larger = one.getBounds();
larger.join(two.getBounds());
SkScalar largerWidth = larger.width();
if (largerWidth < 4) {
largerWidth = 4;
}
SkScalar largerHeight = larger.height();
if (largerHeight < 4) {
largerHeight = 4;
}
SkScalar hScale = (bitWidth - 2) / largerWidth;
SkScalar vScale = (bitHeight - 2) / largerHeight;
scale.reset();
scale.preScale(hScale, vScale);
}
static int pathsDrawTheSame(SkBitmap& bits, const SkPath& scaledOne, const SkPath& scaledTwo,
int& error2x2) {
if (bits.width() == 0) {
bits.allocN32Pixels(bitWidth * 2, bitHeight);
}
SkCanvas canvas(bits);
canvas.drawColor(SK_ColorWHITE);
SkPaint paint;
canvas.save();
const SkRect& bounds1 = scaledOne.getBounds();
canvas.translate(-bounds1.fLeft + 1, -bounds1.fTop + 1);
canvas.drawPath(scaledOne, paint);
canvas.restore();
canvas.save();
canvas.translate(-bounds1.fLeft + 1 + bitWidth, -bounds1.fTop + 1);
canvas.drawPath(scaledTwo, paint);
canvas.restore();
int errors2 = 0;
int errors = 0;
for (int y = 0; y < bitHeight - 1; ++y) {
uint32_t* addr1 = bits.getAddr32(0, y);
uint32_t* addr2 = bits.getAddr32(0, y + 1);
uint32_t* addr3 = bits.getAddr32(bitWidth, y);
uint32_t* addr4 = bits.getAddr32(bitWidth, y + 1);
for (int x = 0; x < bitWidth - 1; ++x) {
// count 2x2 blocks
bool err = addr1[x] != addr3[x];
if (err) {
errors2 += addr1[x + 1] != addr3[x + 1]
&& addr2[x] != addr4[x] && addr2[x + 1] != addr4[x + 1];
errors++;
}
}
}
error2x2 = errors2;
return errors;
}
static int pathsDrawTheSame(const SkPath& one, const SkPath& two, SkBitmap& bits, SkPath& scaledOne,
SkPath& scaledTwo, int& error2x2) {
SkMatrix scale;
scaleMatrix(one, two, scale);
one.transform(scale, &scaledOne);
two.transform(scale, &scaledTwo);
return pathsDrawTheSame(bits, scaledOne, scaledTwo, error2x2);
}
bool drawAsciiPaths(const SkPath& one, const SkPath& two, bool drawPaths) {
if (!drawPaths) {
return true;
}
const SkRect& bounds1 = one.getBounds();
const SkRect& bounds2 = two.getBounds();
SkRect larger = bounds1;
larger.join(bounds2);
SkBitmap bits;
char out[256];
int bitWidth = SkScalarCeilToInt(larger.width()) + 2;
if (bitWidth * 2 + 1 >= (int) sizeof(out)) {
return false;
}
int bitHeight = SkScalarCeilToInt(larger.height()) + 2;
if (bitHeight >= (int) sizeof(out)) {
return false;
}
bits.allocN32Pixels(bitWidth * 2, bitHeight);
SkCanvas canvas(bits);
canvas.drawColor(SK_ColorWHITE);
SkPaint paint;
canvas.save();
canvas.translate(-bounds1.fLeft + 1, -bounds1.fTop + 1);
canvas.drawPath(one, paint);
canvas.restore();
canvas.save();
canvas.translate(-bounds1.fLeft + 1 + bitWidth, -bounds1.fTop + 1);
canvas.drawPath(two, paint);
canvas.restore();
for (int y = 0; y < bitHeight; ++y) {
uint32_t* addr1 = bits.getAddr32(0, y);
int x;
char* outPtr = out;
for (x = 0; x < bitWidth; ++x) {
*outPtr++ = addr1[x] == (uint32_t) -1 ? '_' : 'x';
}
*outPtr++ = '|';
for (x = bitWidth; x < bitWidth * 2; ++x) {
*outPtr++ = addr1[x] == (uint32_t) -1 ? '_' : 'x';
}
*outPtr++ = '\0';
SkDebugf("%s\n", out);
}
return true;
}
int comparePaths(skiatest::Reporter* reporter, const char* filename, const SkPath& one,
const SkPath& two, SkBitmap& bitmap) {
int errors2x2;
SkPath scaledOne, scaledTwo;
(void) pathsDrawTheSame(one, two, bitmap, scaledOne, scaledTwo, errors2x2);
if (errors2x2 == 0) {
return 0;
}
const int MAX_ERRORS = 9;
return errors2x2 > MAX_ERRORS ? errors2x2 : 0;
}
const int gTestFirst = 41;
static int gTestNo = gTestFirst;
static SkTDArray<SkPathOp> gTestOp;
static void showPathOpPath(const char* testName, const SkPath& one, const SkPath& two,
const SkPath& a, const SkPath& b, const SkPath& scaledOne, const SkPath& scaledTwo,
const SkPathOp shapeOp, const SkMatrix& scale) {
SkASSERT((unsigned) shapeOp < SK_ARRAY_COUNT(opStrs));
if (!testName) {
testName = "xOp";
}
SkDebugf("static void %s%d%s(skiatest::Reporter* reporter, const char* filename) {\n",
testName, gTestNo, opSuffixes[shapeOp]);
*gTestOp.append() = shapeOp;
++gTestNo;
SkDebugf(" SkPath path, pathB;\n");
SkPathOpsDebug::ShowOnePath(a, "path", false);
SkPathOpsDebug::ShowOnePath(b, "pathB", false);
SkDebugf(" testPathOp(reporter, path, pathB, %s, filename);\n", opStrs[shapeOp]);
SkDebugf("}\n");
drawAsciiPaths(scaledOne, scaledTwo, false);
}
void ShowTestArray(const char* testName) {
if (!testName) {
testName = "xOp";
}
for (int x = gTestFirst; x < gTestNo; ++x) {
SkDebugf(" TEST(%s%d%s),\n", testName, x, opSuffixes[gTestOp[x - gTestFirst]]);
}
}
SK_DECLARE_STATIC_MUTEX(compareDebugOut3);
static int comparePaths(skiatest::Reporter* reporter, const char* testName, const SkPath& one,
const SkPath& scaledOne, const SkPath& two, const SkPath& scaledTwo, SkBitmap& bitmap,
const SkPath& a, const SkPath& b, const SkPathOp shapeOp, const SkMatrix& scale,
bool expectSuccess) {
int errors2x2;
const int MAX_ERRORS = 8;
(void) pathsDrawTheSame(bitmap, scaledOne, scaledTwo, errors2x2);
if (!expectSuccess) {
if (errors2x2 < MAX_ERRORS) {
REPORTER_ASSERT(reporter, 0);
}
return 0;
}
if (errors2x2 == 0) {
return 0;
}
if (errors2x2 >= MAX_ERRORS) {
SkAutoMutexAcquire autoM(compareDebugOut3);
showPathOpPath(testName, one, two, a, b, scaledOne, scaledTwo, shapeOp, scale);
SkDebugf("\n/*");
REPORTER_ASSERT(reporter, 0);
SkDebugf(" */\n");
}
return errors2x2 >= MAX_ERRORS ? errors2x2 : 0;
}
// Default values for when reporter->verbose() is false.
static int testNumber = 55;
static const char* testName = "pathOpTest";
static void writeTestName(const char* nameSuffix, SkMemoryWStream& outFile) {
outFile.writeText(testName);
outFile.writeDecAsText(testNumber);
++testNumber;
if (nameSuffix) {
outFile.writeText(nameSuffix);
}
}
static void outputToStream(const char* pathStr, const char* pathPrefix, const char* nameSuffix,
const char* testFunction, bool twoPaths, SkMemoryWStream& outFile) {
#if 0
outFile.writeText("\n<div id=\"");
writeTestName(nameSuffix, outFile);
outFile.writeText("\">\n");
if (pathPrefix) {
outFile.writeText(pathPrefix);
}
outFile.writeText(pathStr);
outFile.writeText("</div>\n\n");
outFile.writeText(marker);
outFile.writeText(" ");
writeTestName(nameSuffix, outFile);
outFile.writeText(",\n\n\n");
#endif
outFile.writeText("static void ");
writeTestName(nameSuffix, outFile);
outFile.writeText("(skiatest::Reporter* reporter) {\n SkPath path");
if (twoPaths) {
outFile.writeText(", pathB");
}
outFile.writeText(";\n");
if (pathPrefix) {
outFile.writeText(pathPrefix);
}
outFile.writeText(pathStr);
outFile.writeText(" ");
outFile.writeText(testFunction);
outFile.writeText("\n}\n\n");
#if 0
outFile.writeText("static void (*firstTest)() = ");
writeTestName(nameSuffix, outFile);
outFile.writeText(";\n\n");
outFile.writeText("static struct {\n");
outFile.writeText(" void (*fun)();\n");
outFile.writeText(" const char* str;\n");
outFile.writeText("} tests[] = {\n");
outFile.writeText(" TEST(");
writeTestName(nameSuffix, outFile);
outFile.writeText("),\n");
#endif
outFile.flush();
}
SK_DECLARE_STATIC_MUTEX(simplifyDebugOut);
bool testSimplify(SkPath& path, bool useXor, SkPath& out, PathOpsThreadState& state,
const char* pathStr) {
SkPath::FillType fillType = useXor ? SkPath::kEvenOdd_FillType : SkPath::kWinding_FillType;
path.setFillType(fillType);
state.fReporter->bumpTestCount();
if (!Simplify(path, &out)) {
SkDebugf("%s did not expect failure\n", __FUNCTION__);
REPORTER_ASSERT(state.fReporter, 0);
return false;
}
if (!state.fReporter->verbose()) {
return true;
}
int result = comparePaths(state.fReporter, nullptr, path, out, *state.fBitmap);
if (result) {
SkAutoMutexAcquire autoM(simplifyDebugOut);
char temp[8192];
sk_bzero(temp, sizeof(temp));
SkMemoryWStream stream(temp, sizeof(temp));
const char* pathPrefix = nullptr;
const char* nameSuffix = nullptr;
if (fillType == SkPath::kEvenOdd_FillType) {
pathPrefix = " path.setFillType(SkPath::kEvenOdd_FillType);\n";
nameSuffix = "x";
}
const char testFunction[] = "testSimplify(reporter, path);";
outputToStream(pathStr, pathPrefix, nameSuffix, testFunction, false, stream);
SkDebugf("%s", temp);
REPORTER_ASSERT(state.fReporter, 0);
}
state.fReporter->bumpTestCount();
return result == 0;
}
static bool inner_simplify(skiatest::Reporter* reporter, const SkPath& path, const char* filename,
bool checkFail) {
#if 0 && DEBUG_SHOW_TEST_NAME
showPathData(path);
#endif
SkPath out;
if (!Simplify(path, &out)) {
SkDebugf("%s did not expect %s failure\n", __FUNCTION__, filename);
REPORTER_ASSERT(reporter, 0);
return false;
}
SkBitmap bitmap;
int errors = comparePaths(reporter, filename, path, out, bitmap);
if (!checkFail) {
if (!errors) {
SkDebugf("%s failing test %s now succeeds\n", __FUNCTION__, filename);
REPORTER_ASSERT(reporter, 0);
return false;
}
} else if (errors) {
REPORTER_ASSERT(reporter, 0);
}
reporter->bumpTestCount();
return errors == 0;
}
bool testSimplify(skiatest::Reporter* reporter, const SkPath& path, const char* filename) {
return inner_simplify(reporter, path, filename, true);
}
bool testSimplifyCheck(skiatest::Reporter* reporter, const SkPath& path, const char* filename,
bool checkFail) {
return inner_simplify(reporter, path, filename, checkFail);
}
#if DEBUG_SHOW_TEST_NAME
static void showName(const SkPath& a, const SkPath& b, const SkPathOp shapeOp) {
SkDebugf("\n");
showPathData(a);
showOp(shapeOp);
showPathData(b);
}
#endif
bool OpDebug(const SkPath& one, const SkPath& two, SkPathOp op, SkPath* result,
bool expectSuccess SkDEBUGPARAMS(const char* testName));
static bool innerPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
const SkPathOp shapeOp, const char* testName, bool expectSuccess) {
#if 0 && DEBUG_SHOW_TEST_NAME
showName(a, b, shapeOp);
#endif
SkPath out;
if (!OpDebug(a, b, shapeOp, &out, expectSuccess SkDEBUGPARAMS(testName))) {
SkDebugf("%s did not expect failure\n", __FUNCTION__);
REPORTER_ASSERT(reporter, 0);
return false;
}
if (!reporter->verbose()) {
return true;
}
SkPath pathOut, scaledPathOut;
SkRegion rgnA, rgnB, openClip, rgnOut;
openClip.setRect(-16000, -16000, 16000, 16000);
rgnA.setPath(a, openClip);
rgnB.setPath(b, openClip);
rgnOut.op(rgnA, rgnB, (SkRegion::Op) shapeOp);
rgnOut.getBoundaryPath(&pathOut);
SkMatrix scale;
scaleMatrix(a, b, scale);
SkRegion scaledRgnA, scaledRgnB, scaledRgnOut;
SkPath scaledA, scaledB;
scaledA.addPath(a, scale);
scaledA.setFillType(a.getFillType());
scaledB.addPath(b, scale);
scaledB.setFillType(b.getFillType());
scaledRgnA.setPath(scaledA, openClip);
scaledRgnB.setPath(scaledB, openClip);
scaledRgnOut.op(scaledRgnA, scaledRgnB, (SkRegion::Op) shapeOp);
scaledRgnOut.getBoundaryPath(&scaledPathOut);
SkBitmap bitmap;
SkPath scaledOut;
scaledOut.addPath(out, scale);
scaledOut.setFillType(out.getFillType());
int result = comparePaths(reporter, testName, pathOut, scaledPathOut, out, scaledOut, bitmap,
a, b, shapeOp, scale, expectSuccess);
reporter->bumpTestCount();
return result == 0;
}
bool testPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
const SkPathOp shapeOp, const char* testName) {
return innerPathOp(reporter, a, b, shapeOp, testName, true);
}
bool testPathOpCheck(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
const SkPathOp shapeOp, const char* testName, bool checkFail) {
return innerPathOp(reporter, a, b, shapeOp, testName, checkFail);
}
bool testPathOpFailCheck(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
const SkPathOp shapeOp, const char* testName) {
return innerPathOp(reporter, a, b, shapeOp, testName, false);
}
bool testPathFailOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
const SkPathOp shapeOp, const char* testName) {
#if DEBUG_SHOW_TEST_NAME
showName(a, b, shapeOp);
#endif
SkPath orig;
orig.lineTo(54, 43);
SkPath out = orig;
if (Op(a, b, shapeOp, &out) ) {
SkDebugf("%s test is expected to fail\n", __FUNCTION__);
REPORTER_ASSERT(reporter, 0);
return false;
}
SkASSERT(out == orig);
return true;
}
SK_DECLARE_STATIC_MUTEX(gMutex);
void initializeTests(skiatest::Reporter* reporter, const char* test) {
#if 0 // doesn't work yet
SK_CONF_SET("images.jpeg.suppressDecoderWarnings", true);
SK_CONF_SET("images.png.suppressDecoderWarnings", true);
#endif
if (reporter->verbose()) {
SkAutoMutexAcquire lock(gMutex);
testName = test;
size_t testNameSize = strlen(test);
SkFILEStream inFile("../../experimental/Intersection/op.htm");
if (inFile.isValid()) {
SkTDArray<char> inData;
inData.setCount((int) inFile.getLength());
size_t inLen = inData.count();
inFile.read(inData.begin(), inLen);
inFile.setPath(nullptr);
char* insert = strstr(inData.begin(), marker);
if (insert) {
insert += sizeof(marker) - 1;
const char* numLoc = insert + 4 /* indent spaces */ + testNameSize - 1;
testNumber = atoi(numLoc) + 1;
}
}
}
}
void outputProgress(char* ramStr, const char* pathStr, SkPath::FillType pathFillType) {
const char testFunction[] = "testSimplify(path);";
const char* pathPrefix = nullptr;
const char* nameSuffix = nullptr;
if (pathFillType == SkPath::kEvenOdd_FillType) {
pathPrefix = " path.setFillType(SkPath::kEvenOdd_FillType);\n";
nameSuffix = "x";
}
SkMemoryWStream rRamStream(ramStr, PATH_STR_SIZE);
outputToStream(pathStr, pathPrefix, nameSuffix, testFunction, false, rRamStream);
}
void outputProgress(char* ramStr, const char* pathStr, SkPathOp op) {
const char testFunction[] = "testOp(path);";
SkASSERT((size_t) op < SK_ARRAY_COUNT(opSuffixes));
const char* nameSuffix = opSuffixes[op];
SkMemoryWStream rRamStream(ramStr, PATH_STR_SIZE);
outputToStream(pathStr, nullptr, nameSuffix, testFunction, true, rRamStream);
}
void RunTestSet(skiatest::Reporter* reporter, TestDesc tests[], size_t count,
void (*firstTest)(skiatest::Reporter* , const char* filename),
void (*skipTest)(skiatest::Reporter* , const char* filename),
void (*stopTest)(skiatest::Reporter* , const char* filename), bool reverse) {
size_t index;
if (firstTest) {
index = count - 1;
while (index > 0 && tests[index].fun != firstTest) {
--index;
}
#if DEBUG_SHOW_TEST_NAME
SkDebugf("\n<div id=\"%s\">\n", tests[index].str);
#endif
(*tests[index].fun)(reporter, tests[index].str);
if (tests[index].fun == stopTest) {
return;
}
}
index = reverse ? count - 1 : 0;
size_t last = reverse ? 0 : count - 1;
bool foundSkip = !skipTest;
do {
if (tests[index].fun == skipTest) {
foundSkip = true;
}
if (foundSkip && tests[index].fun != firstTest) {
#if DEBUG_SHOW_TEST_NAME
SkDebugf("\n<div id=\"%s\">\n", tests[index].str);
#endif
(*tests[index].fun)(reporter, tests[index].str);
}
if (tests[index].fun == stopTest || index == last) {
break;
}
index += reverse ? -1 : 1;
} while (true);
#if DEBUG_SHOW_TEST_NAME
SkDebugf(
"\n"
"</div>\n"
"\n"
"<script type=\"text/javascript\">\n"
"\n"
"var testDivs = [\n"
);
index = reverse ? count - 1 : 0;
last = reverse ? 0 : count - 1;
foundSkip = !skipTest;
do {
if (tests[index].fun == skipTest) {
foundSkip = true;
}
if (foundSkip && tests[index].fun != firstTest) {
SkDebugf(" %s,\n", tests[index].str);
}
if (tests[index].fun == stopTest || index == last) {
break;
}
index += reverse ? -1 : 1;
} while (true);
#endif
}