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Update JsonWriter.java

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更改了Json的writeInt方法
This commit is contained in:
RedKale
2016-03-01 17:49:56 +08:00
parent 0d431e07f3
commit 40887738b3
1 changed files with 2 additions and 123 deletions
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125
src/main/java/org/redkale/convert/json/JsonWriter.java
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@@ -189,97 +189,12 @@ public class JsonWriter extends Writer {
@Override
public final void writeInt(int value) {
final char sign = value > 0 ? 0 : '-';
if (value < 0) value = -value;
int size;
for (int i = 0;; i++) {
if (value <= sizeTable[i]) {
size = i + 1;
break;
}
}
if (sign != 0) size++; //负数
expand(size);
int q, r;
int charPos = count + size;
// Generate two digits per iteration
while (value >= 65536) {
q = value / 100;
// really: r = i - (q * 100);
r = value - ((q << 6) + (q << 5) + (q << 2));
value = q;
content[--charPos] = DigitOnes[r];
content[--charPos] = DigitTens[r];
}
// Fall thru to fast mode for smaller numbers
// assert(i <= 65536, i);
for (;;) {
q = (value * 52429) >>> (16 + 3);
r = value - ((q << 3) + (q << 1)); // r = i-(q*10) ...
content[--charPos] = digits[r];
value = q;
if (value == 0) break;
}
if (sign != 0) content[--charPos] = sign;
count += size;
writeTo(false, String.valueOf(value));
}
@Override
public final void writeLong(long value) {
final char sign = value > 0 ? 0 : '-';
if (value < 0) value = -value;
int size = 19;
long p = 10;
for (int i = 1; i < 19; i++) {
if (value < p) {
size = i;
break;
}
p = 10 * p;
}
if (sign != 0) size++; //负数
expand(size);
long q;
int r;
int charPos = count + size;
// Get 2 digits/iteration using longs until quotient fits into an int
while (value > Integer.MAX_VALUE) {
q = value / 100;
// really: r = i - (q * 100);
r = (int) (value - ((q << 6) + (q << 5) + (q << 2)));
value = q;
content[--charPos] = DigitOnes[r];
content[--charPos] = DigitTens[r];
}
// Get 2 digits/iteration using ints
int q2;
int i2 = (int) value;
while (i2 >= 65536) {
q2 = i2 / 100;
// really: r = i2 - (q * 100);
r = i2 - ((q2 << 6) + (q2 << 5) + (q2 << 2));
i2 = q2;
content[--charPos] = DigitOnes[r];
content[--charPos] = DigitTens[r];
}
// Fall thru to fast mode for smaller numbers
// assert(i2 <= 65536, i2);
for (;;) {
q2 = (i2 * 52429) >>> (16 + 3);
r = i2 - ((q2 << 3) + (q2 << 1)); // r = i2-(q2*10) ...
content[--charPos] = digits[r];
i2 = q2;
if (i2 == 0) break;
}
if (sign != 0) content[--charPos] = sign;
count += size;
writeTo(false, String.valueOf(value));
}
@Override
@@ -342,40 +257,4 @@ public class JsonWriter extends Writer {
writeTo('}');
}
final static char[] DigitTens = {
'0', '0', '0', '0', '0', '0', '0', '0', '0', '0',
'1', '1', '1', '1', '1', '1', '1', '1', '1', '1',
'2', '2', '2', '2', '2', '2', '2', '2', '2', '2',
'3', '3', '3', '3', '3', '3', '3', '3', '3', '3',
'4', '4', '4', '4', '4', '4', '4', '4', '4', '4',
'5', '5', '5', '5', '5', '5', '5', '5', '5', '5',
'6', '6', '6', '6', '6', '6', '6', '6', '6', '6',
'7', '7', '7', '7', '7', '7', '7', '7', '7', '7',
'8', '8', '8', '8', '8', '8', '8', '8', '8', '8',
'9', '9', '9', '9', '9', '9', '9', '9', '9', '9'
};
final static char[] DigitOnes = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'
};
final static char[] digits = {
'0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', 'a', 'b',
'c', 'd', 'e', 'f', 'g', 'h',
'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't',
'u', 'v', 'w', 'x', 'y', 'z'
};
final static int[] sizeTable = {9, 99, 999, 9999, 99999, 999999, 9999999, 99999999, 999999999, Integer.MAX_VALUE};
}