1 files changed, 23 insertions, 0 deletions
diff --git a/src/codegen/create-hash-table.ts b/src/codegen/create-hash-table.ts
new file mode 100644
index 000000000..776abfdea
--- /dev/null
+++ b/src/codegen/create-hash-table.ts
@@ -0,0 +1,23 @@
+import { spawn } from "bun";
+import path from "path";
+
+const input = process.argv[2];
+const out_dir = process.argv[3];
+
+const create_hash_table = path.join(import.meta.dir, "./create_hash_table");
+
+console.time("Generate LUT");
+const { stdout, exited } = spawn({
+  cmd: [create_hash_table, input],
+  stdout: "pipe",
+  stderr: "inherit",
+});
+await exited;
+let str = await new Response(stdout).text();
+str = str.replaceAll(/^\/\/.*$/gm, "");
+str = str.replaceAll(/^#include.*$/gm, "");
+str = str.replaceAll(`namespace JSC {`, "");
+str = str.replaceAll(`} // namespace JSC`, "");
+str = "// File generated via `make static-hash-table` / `make cpp`\n" + str.trim() + "\n";
+await Bun.write(input.replace(/\.cpp$/, ".lut.h").replace(/(\.lut)?\.txt$/, ".lut.h"), str);
+console.log("Wrote", path.join(out_dir, path.basename(process.cwd(), input.replace(/\.cpp$/, ".lut.h"))));