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Implement bigDecimal host API (#62)

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* Handle negative bigInt in store host API

* Increase size of bigInt in fromString API to support UInt256

* Implement bigDecimal divideBy host API

* Implement bigDecimal plus, minus and times host API

* Implement bigInt dividedByDecimal and mod host API

* Change BN js version to that used by ethers js
This commit is contained in:
prathamesh0
2021-12-28 16:08:05 +05:30
committed by nabarun
parent 129ba694fb
commit b04f6f2fba
5 changed files with 304 additions and 56 deletions
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packages/graph-node/test/subgraph/example1/src/mapping.ts
+84 -9
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@@ -171,13 +171,12 @@ export function testStringToH160 (): string {
return res;
}
export function testBigDecimalToString (): string {
export function testBigDecimalToString (value: string): string {
log.debug('In test bigDecimalToString', []);
const bigInt = BigInt.fromString('1000000000000000000');
const bigDecimal = bigInt.toBigDecimal();
const bigDecimal = BigDecimal.fromString(value);
const res = bigDecimal.toString();
log.debug('typeConversion.bigIntToString from hex result: {}', [res]);
log.debug('typeConversion.bigIntToString result: {}', [res]);
return res;
}
@@ -192,20 +191,54 @@ export function testBigDecimalFromString (value: string): string {
return res;
}
export function testBigDecimalDividedBy (): string {
export function testBigDecimalDividedBy (value1: string, value2: string): string {
log.debug('In test bigDecimal.dividedBy', []);
const bigInt1 = BigInt.fromString('1000000000000000000');
const bigInt2 = BigInt.fromString('100');
const bigDecimal1 = BigDecimal.fromString(value1);
const bigDecimal2 = BigDecimal.fromString(value2);
const bigDecimal1 = new BigDecimal(bigInt1);
const bigDecimal2 = new BigDecimal(bigInt2);
const res = bigDecimal1 / bigDecimal2;
log.debug('bigDecimal.dividedBy result: {}', [res.toString()]);
return res.toString();
}
export function testBigDecimalPlus (value1: string, value2: string): string {
log.debug('In test bigDecimal.plus', []);
const bigDecimal1 = BigDecimal.fromString(value1);
const bigDecimal2 = BigDecimal.fromString(value2);
const res = bigDecimal1 + bigDecimal2;
log.debug('bigDecimal.plus result: {}', [res.toString()]);
return res.toString();
}
export function testBigDecimalMinus (value1: string, value2: string): string {
log.debug('In test bigDecimal.minus', []);
const bigDecimal1 = BigDecimal.fromString(value1);
const bigDecimal2 = BigDecimal.fromString(value2);
const res = bigDecimal1 - bigDecimal2;
log.debug('bigDecimal.minus result: {}', [res.toString()]);
return res.toString();
}
export function testBigDecimalTimes (value1: string, value2: string): string {
log.debug('In test bigDecimal.times', []);
const bigDecimal1 = BigDecimal.fromString(value1);
const bigDecimal2 = BigDecimal.fromString(value2);
const res = bigDecimal1 * bigDecimal2;
log.debug('bigDecimal.times result: {}', [res.toString()]);
return res.toString();
}
export function testBigIntPlus (): string {
log.debug('In test bigInt.plus', []);
@@ -250,6 +283,28 @@ export function testBigIntDividedBy (): string {
return res.toString();
}
export function testBigIntDividedByDecimal (value1: string, value2: string): string {
log.debug('In test bigInt.dividedByDecimal', []);
const bigInt = BigInt.fromString(value1);
const bigDecimal = BigDecimal.fromString(value2);
const res = bigInt.divDecimal(bigDecimal);
log.debug('bigInt.dividedByDecimal result: {}', [res.toString()]);
return res.toString();
}
export function testBigIntMod (value1: string, value2: string): string {
log.debug('In test bigInt.mod', []);
const bigInt1 = BigInt.fromString(value1);
const bigInt2 = BigInt.fromString(value2);
const res = bigInt1.mod(bigInt2);
log.debug('bigInt.mod result: {}', [res.toString()]);
return res.toString();
}
export function testBigIntFromString (value: string): string {
log.debug('In test bigInt.fromString', []);
@@ -259,3 +314,23 @@ export function testBigIntFromString (value: string): string {
return res;
}
export function testBigIntWithI32 (value: string): string[] {
log.debug('In testBigIntWithI32', []);
const variableI32: i32 = parseInt(value) as i32;
const bigInt1 = BigInt.fromI32(variableI32);
const bigInt2 = BigInt.fromString(value);
const res1 = bigInt1.toString();
log.debug('bigInt.FromString result 1: {}', [res1]);
const res2 = bigInt2.toString();
log.debug('bigInt.FromString result 2: {}', [res2]);
const res3 = BigInt.compare(bigInt1, bigInt2).toString();
log.debug('bigInt.FromString result 3: {}', [res3]);
return [res1, res2, res3];
}