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From 1767fdf19ccf9dea510371641360e1ed65965db6 Mon Sep 17 00:00:00 2001
Date: Fri, 22 Jan 2021 15:16:23 +0800
Subject: backport of JDK-8031085
Summary: <class DateTimeFormatterBuilder.java>: DateTimeFormatter won't parse dates with custom format "yyyyMMddHHmmssSSS"
LLT: jdk/test/java/time/tck/java/time/format/TCKDateTimeFormatterBuilder.java
Bug url: https://bugs.openjdk.java.net/browse/JDK-8031085
---
.../time/format/DateTimeFormatterBuilder.java | 79 ++++++++++++++++---
.../format/TCKDateTimeFormatterBuilder.java | 20 ++++-
2 files changed, 86 insertions(+), 13 deletions(-)
diff --git a/jdk/src/share/classes/java/time/format/DateTimeFormatterBuilder.java b/jdk/src/share/classes/java/time/format/DateTimeFormatterBuilder.java
index 7e0698dfc..d57a16730 100644
--- a/jdk/src/share/classes/java/time/format/DateTimeFormatterBuilder.java
+++ b/jdk/src/share/classes/java/time/format/DateTimeFormatterBuilder.java
@@ -664,8 +664,11 @@ public final class DateTimeFormatterBuilder {
* No rounding occurs due to the maximum width - digits are simply dropped.
* <p>
* When parsing in strict mode, the number of parsed digits must be between
- * the minimum and maximum width. When parsing in lenient mode, the minimum
- * width is considered to be zero and the maximum is nine.
+ * the minimum and maximum width. In strict mode, if the minimum and maximum widths
+ * are equal and there is no decimal point then the parser will
+ * participate in adjacent value parsing, see
+ * {@link appendValue(java.time.temporal.TemporalField, int)}. When parsing in lenient mode,
+ * the minimum width is considered to be zero and the maximum is nine.
* <p>
* If the value cannot be obtained then an exception will be thrown.
* If the value is negative an exception will be thrown.
@@ -684,7 +687,12 @@ public final class DateTimeFormatterBuilder {
*/
public DateTimeFormatterBuilder appendFraction(
TemporalField field, int minWidth, int maxWidth, boolean decimalPoint) {
- appendInternal(new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint));
+ if (minWidth == maxWidth && decimalPoint == false) {
+ // adjacent parsing
+ appendValue(new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint));
+ } else {
+ appendInternal(new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint));
+ }
return this;
}
@@ -2907,10 +2915,7 @@ public final class DateTimeFormatterBuilder {
/**
* Prints and parses a numeric date-time field with optional padding.
*/
- static final class FractionPrinterParser implements DateTimePrinterParser {
- private final TemporalField field;
- private final int minWidth;
- private final int maxWidth;
+ static final class FractionPrinterParser extends NumberPrinterParser {
private final boolean decimalPoint;
/**
@@ -2922,6 +2927,7 @@ public final class DateTimeFormatterBuilder {
* @param decimalPoint whether to output the localized decimal point symbol
*/
FractionPrinterParser(TemporalField field, int minWidth, int maxWidth, boolean decimalPoint) {
+ this(field, minWidth, maxWidth, decimalPoint, 0);
Objects.requireNonNull(field, "field");
if (field.range().isFixed() == false) {
throw new IllegalArgumentException("Field must have a fixed set of values: " + field);
@@ -2936,12 +2942,61 @@ public final class DateTimeFormatterBuilder {
throw new IllegalArgumentException("Maximum width must exceed or equal the minimum width but " +
maxWidth + " < " + minWidth);
}
- this.field = field;
- this.minWidth = minWidth;
- this.maxWidth = maxWidth;
+ }
+
+ /**
+ * Constructor.
+ *
+ * @param field the field to output, not null
+ * @param minWidth the minimum width to output, from 0 to 9
+ * @param maxWidth the maximum width to output, from 0 to 9
+ * @param decimalPoint whether to output the localized decimal point symbol
+ * @param subsequentWidth the subsequentWidth for this instance
+ */
+ FractionPrinterParser(TemporalField field, int minWidth, int maxWidth, boolean decimalPoint, int subsequentWidth) {
+ super(field, minWidth, maxWidth, SignStyle.NOT_NEGATIVE, subsequentWidth);
this.decimalPoint = decimalPoint;
}
+ /**
+ * Returns a new instance with fixed width flag set.
+ *
+ * @return a new updated printer-parser, not null
+ */
+ @Override
+ FractionPrinterParser withFixedWidth() {
+ if (subsequentWidth == -1) {
+ return this;
+ }
+ return new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint, -1);
+ }
+
+ /**
+ * Returns a new instance with an updated subsequent width.
+ *
+ * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater
+ * @return a new updated printer-parser, not null
+ */
+ @Override
+ FractionPrinterParser withSubsequentWidth(int subsequentWidth) {
+ return new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint, this.subsequentWidth + subsequentWidth);
+ }
+
+ /**
+ * For FractionPrinterPrinterParser, the width is fixed if context is sttrict,
+ * minWidth equal to maxWidth and decimalpoint is absent.
+ * @param context the context
+ * @return if the field is fixed width
+ * @see DateTimeFormatterBuilder#appendValueFraction(java.time.temporal.TemporalField, int, int, boolean)
+ */
+ @Override
+ boolean isFixedWidth(DateTimeParseContext context) {
+ if (context.isStrict() && minWidth == maxWidth && decimalPoint == false) {
+ return true;
+ }
+ return false;
+ }
+
@Override
public boolean format(DateTimePrintContext context, StringBuilder buf) {
Long value = context.getValue(field);
@@ -2974,8 +3029,8 @@ public final class DateTimeFormatterBuilder {
@Override
public int parse(DateTimeParseContext context, CharSequence text, int position) {
- int effectiveMin = (context.isStrict() ? minWidth : 0);
- int effectiveMax = (context.isStrict() ? maxWidth : 9);
+ int effectiveMin = (context.isStrict() || isFixedWidth(context) ? minWidth : 0);
+ int effectiveMax = (context.isStrict() || isFixedWidth(context) ? maxWidth : 9);
int length = text.length();
if (position == length) {
// valid if whole field is optional, invalid if minimum width
diff --git a/jdk/test/java/time/tck/java/time/format/TCKDateTimeFormatterBuilder.java b/jdk/test/java/time/tck/java/time/format/TCKDateTimeFormatterBuilder.java
index c5a017c91..f689cf651 100644
--- a/jdk/test/java/time/tck/java/time/format/TCKDateTimeFormatterBuilder.java
+++ b/jdk/test/java/time/tck/java/time/format/TCKDateTimeFormatterBuilder.java
@@ -69,6 +69,7 @@ import static org.testng.Assert.assertEquals;
import java.text.ParsePosition;
import java.time.LocalDate;
+import java.time.LocalDateTime;
import java.time.YearMonth;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;
@@ -868,7 +869,7 @@ public class TCKDateTimeFormatterBuilder {
@Test
public void test_adjacent_lenient_fractionFollows_0digit() throws Exception {
- // succeeds because hour/min are fixed width
+ // succeeds because hour, min and fraction of seconds are fixed width
DateTimeFormatter f = builder.parseLenient().appendValue(HOUR_OF_DAY, 2).appendValue(MINUTE_OF_HOUR, 2).appendFraction(NANO_OF_SECOND, 3, 3, false).toFormatter(Locale.UK);
ParsePosition pp = new ParsePosition(0);
TemporalAccessor parsed = f.parseUnresolved("1230", pp);
@@ -878,4 +879,21 @@ public class TCKDateTimeFormatterBuilder {
assertEquals(parsed.getLong(MINUTE_OF_HOUR), 30L);
}
+ @DataProvider(name="adjacentFractionParseData")
+ Object[][] data_adjacent_fraction_parse() {
+ return new Object[][] {
+ {"20130812214600025", "yyyyMMddHHmmssSSS", LocalDateTime.of(2013, 8, 12, 21, 46, 00, 25000000)},
+ {"201308122146000256", "yyyyMMddHHmmssSSSS", LocalDateTime.of(2013, 8, 12, 21, 46, 00, 25600000)},
+ };
+ }
+
+ @Test(dataProvider = "adjacentFractionParseData")
+ public void test_adjacent_fraction(String input, String pattern, LocalDateTime expected) {
+ DateTimeFormatter dtf = DateTimeFormatter.ofPattern(pattern);
+ LocalDateTime actual = LocalDateTime.parse(input, dtf);
+ assertEquals(actual, expected);
+ }
+
+
+
}
--
2.19.0
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