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import SqliteError from "./error.ts";
// Move string to Cexport function setStr(  wasm: any,  str: string,  closure: (ptr: number) => void,) {  const bytes = new TextEncoder().encode(str);  const ptr = wasm.malloc(bytes.length + 1);  if (ptr === 0) {    throw new SqliteError("Out of memory.");  }  const mem = new Uint8Array(wasm.memory.buffer, ptr, bytes.length + 1);  mem.set(bytes);  mem[bytes.length] = 0; // \0 terminator  closure(ptr);  wasm.free(ptr);}
// Move Uint8Array to Cexport function setArr(  wasm: any,  arr: Uint8Array,  closure: (ptr: number) => void,) {  const ptr = wasm.malloc(arr.length);  if (ptr === 0) {    throw new SqliteError("Out of memory.");  }  const mem = new Uint8Array(wasm.memory.buffer, ptr, arr.length);  mem.set(arr);  closure(ptr);  wasm.free(ptr);}
// Read string from Cexport function getStr(wasm: any, ptr: number): string {  const len = wasm.str_len(ptr);  const bytes = new Uint8Array(wasm.memory.buffer, ptr, len);  if (len > 16) {    return new TextDecoder().decode(bytes);  } else {    // This optimization is lifted from EMSCRIPTEN's glue code    let str = "";    let idx = 0;    while (idx < len) {      var u0 = bytes[idx++];      if (!(u0 & 0x80)) {        str += String.fromCharCode(u0);        continue;      }      var u1 = bytes[idx++] & 63;      if ((u0 & 0xE0) == 0xC0) {        str += String.fromCharCode(((u0 & 31) << 6) | u1);        continue;      }      var u2 = bytes[idx++] & 63;      if ((u0 & 0xF0) == 0xE0) {        u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;      } else {        // cut warning        u0 = ((u0 & 7) << 18) | (u1 << 12) | (u2 << 6) | (bytes[idx++] & 63);      }      if (u0 < 0x10000) {        str += String.fromCharCode(u0);      } else {        var ch = u0 - 0x10000;        str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));      }    }    return str;  }}