refactor(store): update tightcoder codegen, optimize TightCoder libra…

…ry (#1210) Co-authored-by: alvarius <alvarius@lattice.xyz>
latticexyz · Aug 6, 2023 · cc2c8da · cc2c8da
1 parent b6c8f3d
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diff --git a/.changeset/witty-jokes-serve.md b/.changeset/witty-jokes-serve.md
@@ -0,0 +1,9 @@
+---
+"@latticexyz/common": patch
+"@latticexyz/store": patch
+"@latticexyz/world": patch
+---
+
+- Refactor tightcoder to use typescript functions instead of ejs
+- Optimize `TightCoder` library
+- Add `isLeftAligned` and `getLeftPaddingBits` common codegen helpers
diff --git a/packages/common/src/codegen/render-solidity/common.ts b/packages/common/src/codegen/render-solidity/common.ts
@@ -180,6 +180,18 @@ export function renderValueTypeToBytes32(name: string, { typeUnwrap, internalTyp
   }
 }
 
+export function isLeftAligned(field: Pick<RenderType, "internalTypeId">): boolean {
+  return field.internalTypeId.match(/^bytes\d{1,2}$/) !== null;
+}
+
+export function getLeftPaddingBits(field: Pick<RenderType, "internalTypeId" | "staticByteLength">): number {
+  if (isLeftAligned(field)) {
+    return 0;
+  } else {
+    return 256 - field.staticByteLength * 8;
+  }
+}
+
 function internalRenderList<T>(
   lineTerminator: string,
   list: T[],