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read double value by BigDecimal #235

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read double value by BigDecimal #235

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ba6babd
fix checking a surrogate pair
t-mangoe Apr 7, 2019
ec7bb60
read double value by BigDecimal
t-mangoe Apr 13, 2019
24f9551
Revert "read double value by BigDecimal"
t-mangoe Apr 13, 2019
c5caefa
read double value by BigDecimal
t-mangoe Apr 13, 2019
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13 changes: 9 additions & 4 deletions 13 src/main/java/com/jsoniter/IterImpl.java
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Original file line number Diff line number Diff line change
@@ -1,12 +1,13 @@
package com.jsoniter;

import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;

import com.jsoniter.any.Any;
import com.jsoniter.spi.JsonException;
import com.jsoniter.spi.Slice;

import java.io.IOException;
import java.math.BigInteger;

class IterImpl {

private static BigInteger maxLong = BigInteger.valueOf(Long.MAX_VALUE);
Expand Down Expand Up @@ -469,7 +470,11 @@ static final double readDouble(final JsonIterator iter) throws IOException {
decimalPart = -decimalPart;
int decimalPlaces = iter.head - start;
if (decimalPlaces > 0 && decimalPlaces < IterImplNumber.POW10.length && (iter.head - oldHead) < 10) {
return value + (decimalPart / (double) IterImplNumber.POW10[decimalPlaces]);
BigDecimal integerPart = new BigDecimal(value);
BigDecimal fractionalPart = new BigDecimal((decimalPart / (double) IterImplNumber.POW10[decimalPlaces]));
BigDecimal result = integerPart.add(fractionalPart).setScale(decimalPlaces,BigDecimal.ROUND_HALF_UP);
double dvalue = result.doubleValue();
return dvalue;
} else {
iter.head = oldHead;
return IterImplForStreaming.readDoubleSlowPath(iter);
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7 changes: 4 additions & 3 deletions 7 src/main/java/com/jsoniter/output/StreamImplString.java
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Expand Up @@ -175,10 +175,11 @@ private static void writeStringSlowPathWithoutEscapeUnicode(JsonStream stream, S
int firstPart = _surrogate;
_surrogate = 0;
// Ok, then, is the second part valid?
if (c < SURR2_FIRST || c > SURR2_LAST) {
throw new JsonException("Broken surrogate pair: first char 0x" + Integer.toHexString(firstPart) + ", second 0x" + Integer.toHexString(c) + "; illegal combination");
int secondPart = val.charAt(++i);
if (secondPart < SURR2_FIRST || secondPart > SURR2_LAST) {
throw new JsonException("Broken surrogate pair: first char 0x" + Integer.toHexString(firstPart) + ", second 0x" + Integer.toHexString(secondPart) + "; illegal combination");
}
c = 0x10000 + ((firstPart - SURR1_FIRST) << 10) + (c - SURR2_FIRST);
c = 0x10000 + ((firstPart - SURR1_FIRST) << 10) + (secondPart - SURR2_FIRST);
if (c > 0x10FFFF) { // illegal in JSON as well as in XML
throw new JsonException("illegalSurrogate");
}
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