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Merged
jtenner merged 3 commits into from
Aug 6, 2019
Merged

[Implement] Read/Write BigInt and Double #21

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5b133be
[Implement] Read/Write BigInt and Double
RedDwarfian Aug 2, 2019
6ae4821
Merge branch 'master' into buffer-64
jtenner Aug 6, 2019
ab4257d
[Fix] Small changes
jtenner Aug 6, 2019
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66 changes: 66 additions & 0 deletions assembly/buffer/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -171,6 +171,72 @@ export class Buffer extends Uint8Array {
store<i32>(this.dataStart + offset, bswap<i32>(reinterpret<i32>(value)));
return offset + 4;
}

readBigInt64LE(offset: i32 = 0): i64 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
return load<i64>(this.dataStart + <usize>offset);
}

readBigInt64BE(offset: i32 = 0): i64 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
return bswap<i64>(load<i64>(this.dataStart + <usize>offset));
}

readBigUInt64LE(offset: i32 = 0): u64 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
return load<u64>(this.dataStart + <usize>offset);
}

readBigUInt64BE(offset: i32 = 0): u64 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
return bswap<u64>(load<u64>(this.dataStart + <usize>offset));
}

writeBigInt64LE(value: i64, offset: i32 = 0): i32 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
store<i64>(this.dataStart + offset, value);
return offset + 8;
}

writeBigInt64BE(value: i64, offset: i32 = 0): i32 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
store<i64>(this.dataStart + offset, bswap<i64>(value));
return offset + 8;
}

writeBigUInt64LE(value: u64, offset: i32 = 0): i32 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
store<u64>(this.dataStart + offset, value);
return offset + 8;
}

writeBigUInt64BE(value: u64, offset: i32 = 0): i32 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
store<u64>(this.dataStart + offset, bswap<u64>(value));
return offset + 8;
}

readDoubleLE(offset: i32 = 0): f64 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
return load<f64>(this.dataStart + <usize>offset);
}

readDoubleBE(offset: i32 = 0): f64 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
return reinterpret<f64>(bswap<i64>(load<i64>(this.dataStart + <usize>offset)));
}

writeDoubleLE(value: f64, offset: i32 = 0): i32 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
store<f64>(this.dataStart + offset, value);
return offset + 8;
}

writeDoubleBE(value: f64, offset: i32 = 0): i32 {
if (i32(offset < 0) | i32(<u32>offset + 8 > this.dataLength)) throw new RangeError(E_INDEXOUTOFRANGE);
store<i64>(this.dataStart + offset, bswap<i64>(reinterpret<i64>(value)));
return offset + 8;
}
}

export namespace Buffer {
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24 changes: 24 additions & 0 deletions assembly/node.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,30 @@ declare class Buffer extends Uint8Array {
writeFloatLE(value: f32, offset?: i32): i32;
/** Writes an inputted 32-bit float at the designated offset, stored in Big Endian format */
writeFloatBE(value: f32, offset?: i32): i32;
/** Reads a signed 64-bit integer, stored in Little Endian format at the designated offset. */
readBigInt64LE(offset?: i32): i64;
/** Reads a signed 64-bit integer, stored in Big Endian format at the designated offset. */
readBigInt64BE(offset?: i32): i64;
/** Reads an unsigned 64-bit integer, stored in Little Endian format at the designated offset. */
readBigUInt64LE(offset?: i32): u64;
/** Reads an unsigned 64-bit integer, stored in Big Endian format at the designated offset. */
readBigUInt64BE(offset?: i32): u64;
/** Writes an inputted 64-bit integer at the designated offset, stored in Little Endian format */
writeBigInt64LE(value: i64, offset?: i32): i32;
/** Writes an inputted 64-bit integer at the designated offset, stored in Big Endian format */
writeBigInt64BE(value: i64, offset?: i32): i32;
/** Writes an inputted unsigned 64-bit integer at the designated offset, stored in Little Endian format */
writeBigUInt64LE(value: u64, offset?: i32): i32;
/** Writes an inputted unsigned 64-bit integer at the designated offset, stored in Big Endian format */
writeBigUInt64BE(value: u64, offset?: i32): i32;
/** Reads a signed 64-bit double, stored in Little Endian format at the designated offset. */
readDoubleLE(offset?: i32): f64;
/** Reads a signed 64-bit double, stored in Big Endian format at the designated offset. */
readDoubleBE(offset?: i32): f64;
/** Writes an inputted 64-bit double at the designated offset, stored in Little Endian format */
writeDoubleLE(value: f64, offset?: i32): i32;
/** Writes an inputted 64-bit double at the designated offset, stored in Big Endian format */
writeDoubleBE(value: f64, offset?: i32): i32;
}

declare namespace Buffer {
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144 changes: 144 additions & 0 deletions tests/buffer.spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -358,6 +358,150 @@ describe("buffer", () => {
// }).toThrow();
});

test("#readBigInt64LE", () => {
let buff = create<Buffer>([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00]);
expect<i64>(buff.readBigInt64LE()).toBe(-4294967296);
expect<i64>(buff.readBigInt64LE(8)).toBe(4294967295);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.readBigInt64LE(0);
// }).toThrow();
});

test("#readBigInt64BE", () => {
let buff = create<Buffer>([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00]);
expect<i64>(buff.readBigInt64BE()).toBe(4294967295);
expect<i64>(buff.readBigInt64BE(8)).toBe(-4294967296);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.readBigInt64BE(0);
// }).toThrow();
});

test("#readBigUInt64LE", () => {
let buff = create<Buffer>([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00]);
expect<u64>(buff.readBigUInt64LE()).toBe(18446744069414584320);
expect<u64>(buff.readBigUInt64LE(8)).toBe(4294967295);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.readBigUInt64LE(0);
// }).toThrow();
});

test("#readBigUInt64BE", () => {
let buff = create<Buffer>([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00]);
expect<u64>(buff.readBigUInt64BE()).toBe(4294967295);
expect<u64>(buff.readBigUInt64BE(8)).toBe(18446744069414584320);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.readBigUInt64BE(0);
// }).toThrow();
});

test("#writeBigInt64LE", () => {
let buff = new Buffer(16);
expect<i64>(buff.writeBigInt64LE(-559038737)).toBe(8);
expect<i64>(buff.writeBigInt64LE(283033613,8)).toBe(16);
let result = create<Buffer>([0xEF,0xBE,0xAD,0xDE,0xFF,0xFF,0xFF,0xFF,0x0d,0xc0,0xde,0x10,0x00,0x00,0x00,0x00]);
expect<Buffer>(buff).toStrictEqual(result);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.writeBigInt64LE(0);
// }).toThrow();
});

test("#writeBigInt64BE", () => {
let buff = new Buffer(16);
expect<i64>(buff.writeBigInt64BE(-559038737)).toBe(8);
expect<i64>(buff.writeBigInt64BE(283033613,8)).toBe(16);
let result = create<Buffer>([0xFF,0xFF,0xFF,0xFF,0xDE,0xAD,0xBE,0xEF,0x00,0x00,0x00,0x00,0x10,0xde,0xc0,0x0d]);
expect<Buffer>(buff).toStrictEqual(result);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.writeBigInt64BE(0);
// }).toThrow();
});

test("#writeBigUInt64LE", () => {
let buff = new Buffer(16);
expect<i64>(buff.writeBigUInt64LE(3735928559)).toBe(8);
expect<i64>(buff.writeBigUInt64LE(283033613,8)).toBe(16);
let result = create<Buffer>([0xEF,0xBE,0xAD,0xDE,0x00,0x00,0x00,0x00,0x0d,0xc0,0xde,0x10,0x00,0x00,0x00,0x00]);
expect<Buffer>(buff).toStrictEqual(result);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.writeBigUInt64LE(0);
// }).toThrow();
});

test("#writeBigUInt64BE", () => {
let buff = new Buffer(16);
expect<i64>(buff.writeBigUInt64BE(3735928559)).toBe(8);
expect<i64>(buff.writeBigUInt64BE(283033613,8)).toBe(16);
let result = create<Buffer>([0x00,0x00,0x00,0x00,0xDE,0xAD,0xBE,0xEF,0x00,0x00,0x00,0x00,0x10,0xde,0xc0,0x0d]);
expect<Buffer>(buff).toStrictEqual(result);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.writeBigUInt64BE(0);
// }).toThrow();
});

test("#readDoubleLE", () => {
let buff = create<Buffer>([0x77, 0xbe, 0x9f, 0x1a, 0x2f, 0xdd, 0x5e, 0x40, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08]);
expect<f64>(buff.readDoubleLE()).toBe(123.456);
expect<f64>(buff.readDoubleLE(8)).toBe(5.447603722011605e-270);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.readDoubleLE(0);
// }).toThrow();
});

test("#readDoubleBE", () => {
let buff = create<Buffer>([0x40, 0x5e, 0xdd, 0x2f, 0x1a, 0x9f, 0xbe, 0x77, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08]);
expect<f64>(buff.readDoubleBE()).toBe(123.456);
expect<f64>(buff.readDoubleBE(8)).toBe(8.20788039913184e-304);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.readDoubleBE(0);
// }).toThrow();
});

test("#writeDoubleLE", () => {
let buff = new Buffer(16);
expect<i32>(buff.writeDoubleLE(123.456)).toBe(8);
expect<i32>(buff.writeDoubleLE(5.447603722011605e-270,8)).toBe(16);
let result = create<Buffer>([0x77, 0xbe, 0x9f, 0x1a, 0x2f, 0xdd, 0x5e, 0x40, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08]);
expect<Buffer>(buff).toStrictEqual(result);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.writeDoubleLE(0);
// }).toThrow();
});

test("#writeDoubleBE", () => {
let buff = new Buffer(16);
expect<i32>(buff.writeDoubleBE(123.456)).toBe(8);
expect<i32>(buff.writeDoubleBE(8.20788039913184e-304,8)).toBe(16);
let result = create<Buffer>([0x40, 0x5e, 0xdd, 0x2f, 0x1a, 0x9f, 0xbe, 0x77, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08]);
expect<Buffer>(buff).toStrictEqual(result);
// TODO:
// expectFn(() => {
// let newBuff = new Buffer(1);
// newBuff.writeDoubleBE(0);
// }).toThrow();
});

test("#subarray", () => {
let example = create<Buffer>([1, 2, 3, 4, 5, 6, 7, 8]);

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