release: 1.1.25

Author: JairusSW

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Change Log
 
+## 2025-12-21 - 1.1.25
+
+- feat: Implement SWAR-based string serialization
+
 ## 2025-11-28 - 1.1.24
 
 - feat: Implement a moving average window to determine buffer size (essentially, allow the buffer size to shrink) [#163](https://github.com/JairusSW/json-as/pull/163)

assembly/serialize/swar/string.ts

@@ -41,7 +41,7 @@ export function serializeString_SWAR(src: string): void {
 
     while (mask != 0) {
       const lane_index = usize(ctz(mask) >> 3);
-      // console.log("lane index "  + lane_index.toString());
+      console.log("lane index " + lane_index.toString());
       const src_offset = srcStart + lane_index;
       const code = load<u16>(src_offset) << 2;
       const escaped = load<u32>(SERIALIZE_ESCAPE_TABLE + code);
@@ -51,13 +51,15 @@ export function serializeString_SWAR(src: string): void {
         const dst_offset = bs.offset + lane_index;
         store<u64>(dst_offset, U00_MARKER);
         store<u32>(dst_offset, escaped, 8);
-        store<u64>(dst_offset, load<u64>(src_offset, 2), 12); // unsafe. can overflow here
+        // store<u64>(dst_offset, load<u64>(src_offset, 2), 12); // unsafe. can overflow here
+        memory.copy(dst_offset + 12, src_offset + 2, (4 - lane_index) << 1);
         bs.offset += 10;
       } else {
         bs.growSize(2);
         const dst_offset = bs.offset + lane_index;
         store<u32>(dst_offset, escaped);
-        store<u64>(dst_offset, load<u64>(src_offset, 2), 4);
+        // store<u64>(dst_offset, load<u64>(src_offset, 2), 4);
+        memory.copy(dst_offset + 4, src_offset + 2, (4 - lane_index) << 1);
         bs.offset += 2;
       }
 

assembly/test.tmp.ts

@@ -2,6 +2,6 @@ import { bs } from "../lib/as-bs";
 import { serializeString_SIMD } from "./serialize/simd/string";
 import { serializeString_SWAR } from "./serialize/swar/string";
 
-serializeString_SWAR("a\0b\"\nd");
-serializeString_SIMD("a\0b\"\nd");
+serializeString_SWAR("a\"cd");
+// serializeString_SIMD("a\0b\"\nd");
 console.log(bs.out<string>());