Create gearhash function from rust source

Author: coyotte508

packages/gearhash/assembly/index.ts

@@ -1,5 +1,19 @@
 // The entry file of your WebAssembly module.
 
-export function add(a: i32, b: i32): i32 {
-  return a + b;
+import { DEFAULT_TABLE } from "./table";
+
+export { DEFAULT_TABLE };
+
+// Function to find the next match in the buffer
+export function nextMatch(hash: u64, buf: Uint8Array, mask: u64, table: StaticArray<u64> = DEFAULT_TABLE): i32 {
+	for (let i = 0; i < buf.length; i++) {
+		const b = buf[i];
+		hash = (hash << 1) + table[b];
+
+		if ((hash & mask) == 0) {
+			return i + 1;
+		}
+	}
+
+	return -1; // Return -1 to indicate no match found (equivalent to None in Rust)
 }

packages/gearhash/assembly/table.ts

@@ -0,0 +1,57 @@
+/* eslint-disable @typescript-eslint/no-loss-of-precision */
+
+// Define the Table type as a static array of u64 values
+export const DEFAULT_TABLE: StaticArray<u64> = [
+	0xb088d3a9e840f559, 0x5652c7f739ed20d6, 0x45b28969898972ab, 0x6b0a89d5b68ec777, 0x368f573e8b7a31b7,
+	0x1dc636dce936d94b, 0x207a4c4e5554d5b6, 0xa474b34628239acb, 0x3b06a83e1ca3b912, 0x90e78d6c2f02baf7,
+	0xe1c92df7150d9a8a, 0x8e95053a1086d3ad, 0x5a2ef4f1b83a0722, 0xa50fac949f807fae, 0x0e7303eb80d8d681,
+	0x99b07edc1570ad0f, 0x689d2fb555fd3076, 0x00005082119ea468, 0xc4b08306a88fcc28, 0x3eb0678af6374afd,
+	0xf19f87ab86ad7436, 0xf2129fbfbe6bc736, 0x481149575c98a4ed, 0x0000010695477bc5, 0x1fba37801a9ceacc,
+	0x3bf06fd663a49b6d, 0x99687e9782e3874b, 0x79a10673aa50d8e3, 0xe4accf9e6211f420, 0x2520e71f87579071,
+	0x2bd5d3fd781a8a9b, 0x00de4dcddd11c873, 0xeaa9311c5a87392f, 0xdb748eb617bc40ff, 0xaf579a8df620bf6f,
+	0x86a6e5da1b09c2b1, 0xcc2fc30ac322a12e, 0x355e2afec1f74267, 0x2d99c8f4c021a47b, 0xbade4b4a9404cfc3,
+	0xf7b518721d707d69, 0x3286b6587bf32c20, 0x0000b68886af270c, 0xa115d6e4db8a9079, 0x484f7e9c97b2e199,
+	0xccca7bb75713e301, 0xbf2584a62bb0f160, 0xade7e813625dbcc8, 0x000070940d87955a, 0x8ae69108139e626f,
+	0xbd776ad72fde38a2, 0xfb6b001fc2fcc0cf, 0xc7a474b8e67bc427, 0xbaf6f11610eb5d58, 0x09cb1f5b6de770d1,
+	0xb0b219e6977d4c47, 0x00ccbc386ea7ad4a, 0xcc849d0adf973f01, 0x73a3ef7d016af770, 0xc807d2d386bdbdfe,
+	0x7f2ac9966c791730, 0xd037a86bc6c504da, 0xf3f17c661eaa609d, 0xaca626b04daae687, 0x755a99374f4a5b07,
+	0x90837ee65b2caede, 0x6ee8ad93fd560785, 0x0000d9e11053edd8, 0x9e063bb2d21cdbd7, 0x07ab77f12a01d2b2,
+	0xec550255e6641b44, 0x78fb94a8449c14c6, 0xc7510e1bc6c0f5f5, 0x0000320b36e4cae3, 0x827c33262c8b1a2d,
+	0x14675f0b48ea4144, 0x267bd3a6498deceb, 0xf1916ff982f5035e, 0x86221b7ff434fb88, 0x9dbecee7386f49d8,
+	0xea58f8cac80f8f4a, 0x008d198692fc64d8, 0x6d38704fbabf9a36, 0xe032cb07d1e7be4c, 0x228d21f6ad450890,
+	0x635cb1bfc02589a5, 0x4620a1739ca2ce71, 0xa7e7dfe3aae5fb58, 0x0c10ca932b3c0deb, 0x2727fee884afed7b,
+	0xa2df1c6df9e2ab1f, 0x4dcdd1ac0774f523, 0x000070ffad33e24e, 0xa2ace87bc5977816, 0x9892275ab4286049,
+	0xc2861181ddf18959, 0xbb9972a042483e19, 0xef70cd3766513078, 0x00000513abfc9864, 0xc058b61858c94083,
+	0x09e850859725e0de, 0x9197fb3bf83e7d94, 0x7e1e626d12b64bce, 0x520c54507f7b57d1, 0xbee1797174e22416,
+	0x6fd9ac3222e95587, 0x0023957c9adfbf3e, 0xa01c7d7e234bbe15, 0xaba2c758b8a38cbb, 0x0d1fa0ceec3e2b30,
+	0x0bb6a58b7e60b991, 0x4333dd5b9fa26635, 0xc2fd3b7d4001c1a3, 0xfb41802454731127, 0x65a56185a50d18cb,
+	0xf67a02bd8784b54f, 0x696f11dd67e65063, 0x00002022fca814ab, 0x8cd6be912db9d852, 0x695189b6e9ae8a57,
+	0xee9453b50ada0c28, 0xd8fc5ea91a78845e, 0xab86bf191a4aa767, 0x0000c6b5c86415e5, 0x267310178e08a22e,
+	0xed2d101b078bca25, 0x3b41ed84b226a8fb, 0x13e622120f28dc06, 0xa315f5ebfb706d26, 0x8816c34e3301bace,
+	0xe9395b9cbb71fdae, 0x002ce9202e721648, 0x4283db1d2bb3c91c, 0xd77d461ad2b1a6a5, 0xe2ec17e46eeb866b,
+	0xb8e0be4039fbc47c, 0xdea160c4d5299d04, 0x7eec86c8d28c3634, 0x2119ad129f98a399, 0xa6ccf46b61a283ef,
+	0x2c52cedef658c617, 0x2db4871169acdd83, 0x0000f0d6f39ecbe9, 0x3dd5d8c98d2f9489, 0x8a1872a22b01f584,
+	0xf282a4c40e7b3cf2, 0x8020ec2ccb1ba196, 0x6693b6e09e59e313, 0x0000ce19cc7c83eb, 0x20cb5735f6479c3b,
+	0x762ebf3759d75a5b, 0x207bfe823d693975, 0xd77dc112339cd9d5, 0x9ba7834284627d03, 0x217dc513e95f51e9,
+	0xb27b1a29fc5e7816, 0x00d5cd9831bb662d, 0x71e39b806d75734c, 0x7e572af006fb1a23, 0xa2734f2f6ae91f85,
+	0xbf82c6b5022cddf2, 0x5c3beac60761a0de, 0xcdc893bb47416998, 0x6d1085615c187e01, 0x77f8ae30ac277c5d,
+	0x917c6b81122a2c91, 0x5b75b699add16967, 0x0000cf6ae79a069b, 0xf3c40afa60de1104, 0x2063127aa59167c3,
+	0x621de62269d1894d, 0xd188ac1de62b4726, 0x107036e2154b673c, 0x0000b85f28553a1d, 0xf2ef4e4c18236f3d,
+	0xd9d6de6611b9f602, 0xa1fc7955fb47911c, 0xeb85fd032f298dbd, 0xbe27502fb3befae1, 0xe3034251c4cd661e,
+	0x441364d354071836, 0x0082b36c75f2983e, 0xb145910316fa66f0, 0x021c069c9847caf7, 0x2910dfc75a4b5221,
+	0x735b353e1c57a8b5, 0xce44312ce98ed96c, 0xbc942e4506bdfa65, 0xf05086a71257941b, 0xfec3b215d351cead,
+	0x00ae1055e0144202, 0xf54b40846f42e454, 0x00007fd9c8bcbcc8, 0xbfbd9ef317de9bfe, 0xa804302ff2854e12,
+	0x39ce4957a5e5d8d4, 0xffb9e2a45637ba84, 0x55b9ad1d9ea0818b, 0x00008acbf319178a, 0x48e2bfc8d0fbfb38,
+	0x8be39841e848b5e8, 0x0e2712160696a08b, 0xd51096e84b44242a, 0x1101ba176792e13a, 0xc22e770f4531689d,
+	0x1689eff272bbc56c, 0x00a92a197f5650ec, 0xbc765990bda1784e, 0xc61441e392fcb8ae, 0x07e13a2ced31e4a0,
+	0x92cbe984234e9d4d, 0x8f4ff572bb7d8ac5, 0x0b9670c00b963bd0, 0x62955a581a03eb01, 0x645f83e5ea000254,
+	0x41fce516cd88f299, 0xbbda9748da7a98cf, 0x0000aab2fe4845fa, 0x19761b069bf56555, 0x8b8f5e8343b6ad56,
+	0x3e5d1cfd144821d9, 0xec5c1e2ca2b0cd8f, 0xfaf7e0fea7fbb57f, 0x000000d3ba12961b, 0xda3f90178401b18e,
+	0x70ff906de33a5feb, 0x0527d5a7c06970e7, 0x22d8e773607c13e9, 0xc9ab70df643c3bac, 0xeda4c6dc8abe12e3,
+	0xecef1f410033e78a, 0x0024c2b274ac72cb, 0x06740d954fa900b4, 0x1d7a299b323d6304, 0xb3c37cb298cbead5,
+	0xc986e3c76178739b, 0x9fabea364b46f58a, 0x6da214c5af85cc56, 0x17a43ed8b7a38f84, 0x6eccec511d9adbeb,
+	0xf9cab30913335afb, 0x4a5e60c5f415eed2, 0x00006967503672b4, 0x9da51d121454bb87, 0x84321e13b9bbc816,
+	0xfb3d6fb6ab2fdd8d, 0x60305eed8e160a8d, 0xcbbf4b14e9946ce8, 0x00004f63381b10c3, 0x07d5b7816fcc4e10,
+	0xe5a536726a6a8155, 0x57afb23447a07fdd, 0x18f346f7abc9d394, 0x636dc655d61ad33d, 0xcc8bab4939f7f3f6,
+	0x63c7a906c1dd187b,
+];