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Comparing version 6.0.0 to 6.1.0

20

bson.d.ts

@@ -384,2 +384,22 @@ /**

static fromString(representation: string): Decimal128;
/**
* Create a Decimal128 instance from a string representation, allowing for rounding to 34
* significant digits
*
* @example Example of a number that will be rounded
* ```ts
* > let d = Decimal128.fromString('37.499999999999999196428571428571375')
* Uncaught:
* BSONError: "37.499999999999999196428571428571375" is not a valid Decimal128 string - inexact rounding
* at invalidErr (/home/wajames/js-bson/lib/bson.cjs:1402:11)
* at Decimal128.fromStringInternal (/home/wajames/js-bson/lib/bson.cjs:1633:25)
* at Decimal128.fromString (/home/wajames/js-bson/lib/bson.cjs:1424:27)
*
* > d = Decimal128.fromStringWithRounding('37.499999999999999196428571428571375')
* new Decimal128("37.49999999999999919642857142857138")
* ```
* @param representation - a numeric string representation.
*/
static fromStringWithRounding(representation: string): Decimal128;
private static _fromString;
/** Create a string representation of the raw Decimal128 value */

@@ -386,0 +406,0 @@ toString(): string;

2

package.json

@@ -17,3 +17,3 @@ {

"types": "bson.d.ts",
"version": "6.0.0",
"version": "6.1.0",
"author": {

@@ -20,0 +20,0 @@ "name": "The MongoDB NodeJS Team",

@@ -161,2 +161,28 @@ import { BSONValue } from './bson_value';

static fromString(representation: string): Decimal128 {
return Decimal128._fromString(representation, { allowRounding: false });
}
/**
* Create a Decimal128 instance from a string representation, allowing for rounding to 34
* significant digits
*
* @example Example of a number that will be rounded
* ```ts
* > let d = Decimal128.fromString('37.499999999999999196428571428571375')
* Uncaught:
* BSONError: "37.499999999999999196428571428571375" is not a valid Decimal128 string - inexact rounding
* at invalidErr (/home/wajames/js-bson/lib/bson.cjs:1402:11)
* at Decimal128.fromStringInternal (/home/wajames/js-bson/lib/bson.cjs:1633:25)
* at Decimal128.fromString (/home/wajames/js-bson/lib/bson.cjs:1424:27)
*
* > d = Decimal128.fromStringWithRounding('37.499999999999999196428571428571375')
* new Decimal128("37.49999999999999919642857142857138")
* ```
* @param representation - a numeric string representation.
*/
static fromStringWithRounding(representation: string): Decimal128 {
return Decimal128._fromString(representation, { allowRounding: true });
}
private static _fromString(representation: string, options: { allowRounding: boolean }) {
// Parse state tracking

@@ -355,55 +381,143 @@ let isNegative = false;

while (exponent < EXPONENT_MIN || nDigitsStored < nDigits) {
// Shift last digit. can only do this if < significant digits than # stored.
if (lastDigit === 0) {
if (significantDigits === 0) {
if (options.allowRounding) {
while (exponent < EXPONENT_MIN || nDigitsStored < nDigits) {
// Shift last digit. can only do this if < significant digits than # stored.
if (lastDigit === 0 && significantDigits < nDigitsStored) {
exponent = EXPONENT_MIN;
significantDigits = 0;
break;
}
invalidErr(representation, 'exponent underflow');
if (nDigitsStored < nDigits) {
// adjust to match digits not stored
nDigits = nDigits - 1;
} else {
// adjust to round
lastDigit = lastDigit - 1;
}
if (exponent < EXPONENT_MAX) {
exponent = exponent + 1;
} else {
// Check if we have a zero then just hard clamp, otherwise fail
const digitsString = digits.join('');
if (digitsString.match(/^0+$/)) {
exponent = EXPONENT_MAX;
break;
}
invalidErr(representation, 'overflow');
}
}
if (nDigitsStored < nDigits) {
if (
representation[nDigits - 1 + Number(sawSign) + Number(sawRadix)] !== '0' &&
significantDigits !== 0
) {
invalidErr(representation, 'inexact rounding');
// Round
// We've normalized the exponent, but might still need to round.
if (lastDigit + 1 < significantDigits) {
let endOfString = nDigitsRead;
// If we have seen a radix point, 'string' is 1 longer than we have
// documented with ndigits_read, so inc the position of the first nonzero
// digit and the position that digits are read to.
if (sawRadix) {
firstNonZero = firstNonZero + 1;
endOfString = endOfString + 1;
}
// adjust to match digits not stored
nDigits = nDigits - 1;
} else {
if (digits[lastDigit] !== 0) {
invalidErr(representation, 'inexact rounding');
// if negative, we need to increment again to account for - sign at start.
if (sawSign) {
firstNonZero = firstNonZero + 1;
endOfString = endOfString + 1;
}
// adjust to round
lastDigit = lastDigit - 1;
}
if (exponent < EXPONENT_MAX) {
exponent = exponent + 1;
} else {
invalidErr(representation, 'overflow');
const roundDigit = parseInt(representation[firstNonZero + lastDigit + 1], 10);
let roundBit = 0;
if (roundDigit >= 5) {
roundBit = 1;
if (roundDigit === 5) {
roundBit = digits[lastDigit] % 2 === 1 ? 1 : 0;
for (let i = firstNonZero + lastDigit + 2; i < endOfString; i++) {
if (parseInt(representation[i], 10)) {
roundBit = 1;
break;
}
}
}
}
if (roundBit) {
let dIdx = lastDigit;
for (; dIdx >= 0; dIdx--) {
if (++digits[dIdx] > 9) {
digits[dIdx] = 0;
// overflowed most significant digit
if (dIdx === 0) {
if (exponent < EXPONENT_MAX) {
exponent = exponent + 1;
digits[dIdx] = 1;
} else {
return new Decimal128(isNegative ? INF_NEGATIVE_BUFFER : INF_POSITIVE_BUFFER);
}
}
} else {
break;
}
}
}
}
}
} else {
while (exponent < EXPONENT_MIN || nDigitsStored < nDigits) {
// Shift last digit. can only do this if < significant digits than # stored.
if (lastDigit === 0) {
if (significantDigits === 0) {
exponent = EXPONENT_MIN;
break;
}
// Round
// We've normalized the exponent, but might still need to round.
if (lastDigit + 1 < significantDigits) {
// If we have seen a radix point, 'string' is 1 longer than we have
// documented with ndigits_read, so inc the position of the first nonzero
// digit and the position that digits are read to.
if (sawRadix) {
firstNonZero = firstNonZero + 1;
invalidErr(representation, 'exponent underflow');
}
if (nDigitsStored < nDigits) {
if (
representation[nDigits - 1 + Number(sawSign) + Number(sawRadix)] !== '0' &&
significantDigits !== 0
) {
invalidErr(representation, 'inexact rounding');
}
// adjust to match digits not stored
nDigits = nDigits - 1;
} else {
if (digits[lastDigit] !== 0) {
invalidErr(representation, 'inexact rounding');
}
// adjust to round
lastDigit = lastDigit - 1;
}
if (exponent < EXPONENT_MAX) {
exponent = exponent + 1;
} else {
invalidErr(representation, 'overflow');
}
}
// if saw sign, we need to increment again to account for - or + sign at start.
if (sawSign) {
firstNonZero = firstNonZero + 1;
}
const roundDigit = parseInt(representation[firstNonZero + lastDigit + 1], 10);
// Round
// We've normalized the exponent, but might still need to round.
if (lastDigit + 1 < significantDigits) {
// If we have seen a radix point, 'string' is 1 longer than we have
// documented with ndigits_read, so inc the position of the first nonzero
// digit and the position that digits are read to.
if (sawRadix) {
firstNonZero = firstNonZero + 1;
}
// if saw sign, we need to increment again to account for - or + sign at start.
if (sawSign) {
firstNonZero = firstNonZero + 1;
}
if (roundDigit !== 0) {
invalidErr(representation, 'inexact rounding');
const roundDigit = parseInt(representation[firstNonZero + lastDigit + 1], 10);
if (roundDigit !== 0) {
invalidErr(representation, 'inexact rounding');
}
}

@@ -512,3 +626,2 @@ }

}
/** Create a string representation of the raw Decimal128 value */

@@ -515,0 +628,0 @@ toString(): string {

@@ -260,4 +260,8 @@ import { Binary } from '../binary';

// Write the objectId into the shared buffer
if (isUint8Array(value.id)) {
buffer.set(value.id.subarray(0, 12), index);
const idValue = value.id;
if (isUint8Array(idValue)) {
for (let i = 0; i < 12; i++) {
buffer[index++] = idValue[i];
}
} else {

@@ -268,3 +272,3 @@ throw new BSONError('object [' + JSON.stringify(value) + '] is not a valid ObjectId');

// Adjust index
return index + 12;
return index;
}

@@ -271,0 +275,0 @@

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