open.c

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/*
 * This file is part of the Fun programming language.
 * https://fun-lang.xyz/
 *
 * Copyright 2025 Johannes Findeisen <you@hanez.org>
 * Licensed under the terms of the Apache-2.0 license.
 * https://opensource.org/license/apache-2-0
 */
 
/**
 * @file open.c
 * @brief Implements the OP_SQLITE_OPEN opcode (conditional build).
 *
 * Opens a SQLite database and registers a handle when FUN_WITH_SQLITE is
 * enabled. On failure or when SQLite support is disabled, pushes 0.
 * 
 * OP_SQLITE_OPEN: (path:string) -> handle:int (>0) or 0 on error
 */
 
case OP_SQLITE_OPEN: {
#ifdef FUN_WITH_SQLITE
  Value vpath = pop_value(vm);
  char *path = value_to_string_alloc(&vpath);
  free_value(vpath);
  if (!path) {
    push_value(vm, make_int(0));
    break;
  }
  sqlite3 *db = NULL;
  int rc = sqlite3_open(path, &db);
  free(path);
  if (rc != SQLITE_OK || !db) {
    if (db) sqlite3_close(db);
    push_value(vm, make_int(0));
    break;
  }
  SqlHandle *h = sql_reg_add(db);
  if (!h) {
    sqlite3_close(db);
    push_value(vm, make_int(0));
    break;
  }
  push_value(vm, make_int(h->id));
#else
  Value v = pop_value(vm);
  free_value(v);
  push_value(vm, make_int(0));
#endif
  break;
}