/**
* Parses the text to a builder.
*
* <p>This parses to a {@code DateTimeBuilder} ensuring that the text is fully parsed. This method
* throws {@link DateTimeParseException} if unable to parse, or some other {@code
* DateTimeException} if another date/time problem occurs.
*
* @param text the text to parse, not null
* @return the engine representing the result of the parse, not null
* @throws DateTimeParseException if the parse fails
* @throws DateTimeException if there is a date/time problem
*/
public DateTimeBuilder parseToBuilder(CharSequence text) {
Objects.requireNonNull(text, "text");
String str = text.toString(); // parsing whole String, so this makes sense
ParsePosition pos = new ParsePosition(0);
DateTimeBuilder result = parseToBuilder(str, pos);
if (result == null || pos.getErrorIndex() >= 0 || pos.getIndex() < str.length()) {
String abbr = str.toString();
if (abbr.length() > 64) {
abbr = abbr.substring(0, 64) + "...";
}
if (pos.getErrorIndex() >= 0) {
throw new DateTimeParseException(
"Text '" + abbr + "' could not be parsed at index " + pos.getErrorIndex(),
str,
pos.getErrorIndex());
} else {
throw new DateTimeParseException(
"Text '"
+ abbr
+ "' could not be parsed, unparsed text found at index "
+ pos.getIndex(),
str,
pos.getIndex());
}
}
return result;
}
@Override
public Object parseObject(String text, ParsePosition pos) {
Objects.requireNonNull(text, "text");
DateTimeBuilder builder;
try {
builder = formatter.parseToBuilder(text, pos);
} catch (IndexOutOfBoundsException ex) {
if (pos.getErrorIndex() < 0) {
pos.setErrorIndex(0);
}
return null;
}
if (builder == null) {
if (pos.getErrorIndex() < 0) {
pos.setErrorIndex(0);
}
return null;
}
if (parseType == null) {
return builder;
}
try {
return builder.resolve().build(parseType);
} catch (RuntimeException ex) {
pos.setErrorIndex(0);
return null;
}
}
@Override
public Object parseObject(String s, ParsePosition pos) {
if (pos.getErrorIndex() >= 0)
throw new IllegalArgumentException(pos + " has en error at " + pos.getErrorIndex());
boolean success = false;
Object tmpRes = null;
final ParsePosition tmpPos = new ParsePosition(pos.getIndex());
final Iterator<? extends Format> iter = this.formats.iterator();
while (iter.hasNext() && !success) {
final Format f = iter.next();
mutateTo(tmpPos, pos);
tmpRes = f.parseObject(s, tmpPos);
success = tmpPos.getIndex() != pos.getIndex() && tmpPos.getErrorIndex() < 0;
}
final Object res;
if (!success) {
// fail with the same as format()
res = this.formats.get(this.formatIndex).parseObject(s, pos);
} else {
res = tmpRes;
mutateTo(pos, tmpPos);
}
return res;
}
public void test(TestHarness harness) {
ParsePosition pp = new ParsePosition(69);
harness.check(pp.getIndex(), 69, "getIndex() post-create");
pp.setIndex(666);
harness.check(pp.getIndex(), 666, "set/getIndex()");
harness.check(pp.getErrorIndex(), -1, "getErrorIndex() no error");
pp.setErrorIndex(65536);
harness.check(pp.getErrorIndex(), 65536, "set/getErrorIndex()");
harness.debug(pp.toString());
}
/**
* Checks if the value can safely be converted to a byte primitive.
*
* @param value The value validation is being performed on.
* @param locale The locale to use to parse the number (system default if null)
* @return the converted Byte value.
*/
public static Byte formatByte(String value, Locale locale) {
Byte result = null;
if (value != null) {
NumberFormat formatter = null;
if (locale != null) {
formatter = NumberFormat.getNumberInstance(locale);
} else {
formatter = NumberFormat.getNumberInstance(Locale.getDefault());
}
formatter.setParseIntegerOnly(true);
ParsePosition pos = new ParsePosition(0);
Number num = formatter.parse(value, pos);
// If there was no error and we used the whole string
if (pos.getErrorIndex() == -1
&& pos.getIndex() == value.length()
&& num.doubleValue() >= Byte.MIN_VALUE
&& num.doubleValue() <= Byte.MAX_VALUE) {
result = new Byte(num.byteValue());
}
}
return result;
}
/**
* @generated
*/
public IParserEditStatus isValidEditString(IAdaptable adapter,
String editString) {
ParsePosition pos = new ParsePosition(0);
Object[] values = getEditProcessor().parse(editString, pos);
if (values == null) {
return new ParserEditStatus(ScribbleDiagramEditorPlugin.ID,
IParserEditStatus.UNEDITABLE, NLS.bind(
Messages.MessageFormatParser_InvalidInputError,
new Integer(pos.getErrorIndex())));
}
return validateNewValues(values);
}
@Override
public Date parse(String i, ParsePosition p) {
/* delegate to SimpleDateFormat for easy stuff */
Date d = super.parse(i, p);
int milliIndex = p.getIndex();
/* worry about the milliseconds ourselves */
if (null != d
&& -1 == p.getErrorIndex()
&& milliIndex + 1 < i.length()
&& '.' == i.charAt(milliIndex)) {
p.setIndex(++milliIndex); // NOTE: ++ to chomp '.'
Number millis = millisParser.parse(i, p);
if (-1 == p.getErrorIndex()) {
int endIndex = p.getIndex();
d =
new Date(
d.getTime()
+ (long) (millis.doubleValue() * Math.pow(10, (3 - endIndex + milliIndex))));
}
}
return d;
}
protected String isCorrectString(String value) {
String text = value.trim();
if (sMinValue.equalsIgnoreCase(text) || sMaxValue.equalsIgnoreCase(text)) return null;
Number result = null;
if ((fNumberType == DOUBLE || fNumberType == FLOAT)
&& (text.indexOf('e') != -1 || text.indexOf('E') != -1)) {
// We have a double/float with an exponent. This is scientific notation. Formatter handles
// them badly, so use parse instead.
try {
if (fNumberType == DOUBLE) {
result = new Double(Double.parseDouble(text));
} else {
result = new Float(Float.parseFloat(text));
}
} catch (NumberFormatException e) {
}
} else {
// integral or not scientific notation. Let formatter handle it.
ParsePosition parsePosition = new ParsePosition(0);
result = fFormatter.parse(text, parsePosition);
if (parsePosition.getErrorIndex() != -1 || parsePosition.getIndex() != text.length())
result = null; // Some error
// Check for out of bounds with long type
if (fNumberType == LONG && result instanceof Double) {
result =
(result.doubleValue() < 0)
? MinmaxValidator.LONG_UNDERFLOW
: MinmaxValidator.LONG_OVERFLOW;
}
}
if (result != null) {
// Now see if it is valid for the requested type.
MinmaxValidator v = sMinMaxValidators[fNumberType];
// Double/Float are special because the min/MIN are on the absolute value, not signed value.
if (fNumberType == DOUBLE || fNumberType == FLOAT) {
double d = result.doubleValue();
if (d == 0.0 || d == -0.0) return null; // +/- zero are valid values.
result = new Double(Math.abs(d));
}
if (v != null) {
String e = v.isValid(result);
if (e == null || e.length() == 0) return null;
return e; // It didn't fit in a the number type.
}
}
return (fFormatter.isParseIntegerOnly() ? sNotIntegerError : sNotNumberError);
}
/**
* @tests java.text.MessageFormat#parseObject(java.lang.String, java.text.ParsePosition) Test of
* method java.text.MessageFormat#parseObject(java.lang.String, java.text.ParsePosition). Case
* 1: Parsing of correct data string. Case 2: Parsing of partial correct data string. Case 3:
* Try to use argument ParsePosition as null.
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "parseObject",
args = {java.lang.String.class, java.text.ParsePosition.class})
public void test_parseObjectLjava_lang_StringLjavajava_text_ParsePosition() {
MessageFormat mf = new MessageFormat("{0,number,#.##}, {0,number,#.#}");
try {
// case 1: Try to parse correct data string.
Object[] objs = {new Double(3.1415)};
String result = mf.format(objs);
// result now equals "3.14, 3.1"
Object[] res = null;
ParsePosition pp = new ParsePosition(0);
int parseIndex = pp.getIndex();
res = (Object[]) mf.parseObject(result, pp);
assertTrue("Parse operation return null", res != null);
assertTrue("parse operation return array with incorrect length", 1 == res.length);
assertTrue("ParseIndex is incorrect", pp.getIndex() != parseIndex);
assertTrue("Result object is incorrect", new Double(3.1).equals(res[0]));
// case 2: Try to parse partially correct data string.
pp.setIndex(0);
char[] cur = result.toCharArray();
cur[cur.length / 2] = 'Z';
String partialCorrect = new String(cur);
res = (Object[]) mf.parseObject(partialCorrect, pp);
assertTrue("Parse operation return null", res == null);
assertTrue("ParseIndex is incorrect", pp.getIndex() == 0);
assertTrue("ParseErrorIndex is incorrect", pp.getErrorIndex() == cur.length / 2);
// case 3: Try to use argument ParsePosition as null.
try {
mf.parseObject(result, null);
fail("Expected NullPointerException was not thrown");
} catch (NullPointerException e) {
// expected
}
} catch (Exception e) {
fail("Unexpected exception " + e.toString());
}
}
/**
* Parse a String into a <code>Calendar</code> object using the specified <code>DateFormat</code>.
*
* @param sourceType The type of the value being converted
* @param targetType The type to convert the value to
* @param value The String date value.
* @param format The DateFormat to parse the String value.
* @return The converted Calendar object.
* @throws ConversionException if the String cannot be converted.
*/
private Calendar parse(
final Class sourceType, final Class targetType, final String value, final DateFormat format) {
format.setLenient(false);
ParsePosition pos = new ParsePosition(0);
Date parsedDate = format.parse(value, pos); // ignore the result (use the Calendar)
if (pos.getErrorIndex() >= 0 || pos.getIndex() != value.length() || parsedDate == null) {
String msg =
"Error converting '"
+ this.toString(sourceType)
+ "' to '"
+ this.toString(targetType)
+ "'";
if (format instanceof SimpleDateFormat) {
msg += " using pattern '" + ((SimpleDateFormat) format).toPattern() + "'";
}
throw new ConversionException(msg);
}
Calendar calendar = format.getCalendar();
return calendar;
}
/**
* Checks if the value can safely be converted to a double primitive.
*
* @param value The value validation is being performed on.
* @param locale The locale to use to parse the number (system default if null)
* @return the converted Double value.
*/
public static Double formatDouble(String value, Locale locale) {
Double result = null;
if (value != null) {
NumberFormat formatter = null;
if (locale != null) {
formatter = NumberFormat.getInstance(locale);
} else {
formatter = NumberFormat.getInstance(Locale.getDefault());
}
ParsePosition pos = new ParsePosition(0);
Number num = formatter.parse(value, pos);
// If there was no error and we used the whole string
if (pos.getErrorIndex() == -1
&& pos.getIndex() == value.length()
&& num.doubleValue() >= (Double.MAX_VALUE * -1)
&& num.doubleValue() <= Double.MAX_VALUE) {
result = new Double(num.doubleValue());
}
}
return result;
}
/**
* Parse a TimeUnitAmount.
*
* @see java.text.Format#parseObject(java.lang.String, java.text.ParsePosition)
* @stable ICU 4.0
*/
public Object parseObject(String source, ParsePosition pos) {
if (!isReady) {
setup();
}
Number resultNumber = null;
TimeUnit resultTimeUnit = null;
int oldPos = pos.getIndex();
int newPos = -1;
int longestParseDistance = 0;
String countOfLongestMatch = null;
// we don't worry too much about speed on parsing, but this can be optimized later if needed.
// Parse by iterating through all available patterns
// and looking for the longest match.
for (TimeUnit timeUnit : timeUnitToCountToPatterns.keySet()) {
Map<String, Object[]> countToPattern = timeUnitToCountToPatterns.get(timeUnit);
for (Entry<String, Object[]> patternEntry : countToPattern.entrySet()) {
String count = patternEntry.getKey();
for (int styl = FULL_NAME; styl < TOTAL_STYLES; ++styl) {
MessageFormat pattern = (MessageFormat) (patternEntry.getValue())[styl];
pos.setErrorIndex(-1);
pos.setIndex(oldPos);
// see if we can parse
Object parsed = pattern.parseObject(source, pos);
if (pos.getErrorIndex() != -1 || pos.getIndex() == oldPos) {
// nothing parsed
continue;
}
Number temp = null;
if (((Object[]) parsed).length != 0) {
// pattern with Number as beginning,
// such as "{0} d".
// check to make sure that the timeUnit is consistent
temp = (Number) ((Object[]) parsed)[0];
String select = pluralRules.select(temp.doubleValue());
if (!count.equals(select)) {
continue;
}
}
int parseDistance = pos.getIndex() - oldPos;
if (parseDistance > longestParseDistance) {
resultNumber = temp;
resultTimeUnit = timeUnit;
newPos = pos.getIndex();
longestParseDistance = parseDistance;
countOfLongestMatch = count;
}
}
}
}
/* After find the longest match, parse the number.
* Result number could be null for the pattern without number pattern.
* such as unit pattern in Arabic.
* When result number is null, use plural rule to set the number.
*/
if (resultNumber == null && longestParseDistance != 0) {
// set the number using plurrual count
if (countOfLongestMatch.equals("zero")) {
resultNumber = Integer.valueOf(0);
} else if (countOfLongestMatch.equals("one")) {
resultNumber = Integer.valueOf(1);
} else if (countOfLongestMatch.equals("two")) {
resultNumber = Integer.valueOf(2);
} else {
// should not happen.
// TODO: how to handle?
resultNumber = Integer.valueOf(3);
}
}
if (longestParseDistance == 0) {
pos.setIndex(oldPos);
pos.setErrorIndex(0);
return null;
} else {
pos.setIndex(newPos);
pos.setErrorIndex(-1);
return new TimeUnitAmount(resultNumber, resultTimeUnit);
}
}
private void mutateTo(ParsePosition tmpPos, ParsePosition pos) {
tmpPos.setIndex(pos.getIndex());
tmpPos.setErrorIndex(pos.getErrorIndex());
}