fix(ext/sqlite): add sourceSQL and expandedSQL getters (#27921)

Author: littledivy

ext/node/ops/sqlite/mod.rs

@@ -42,6 +42,9 @@ pub enum SqliteError {
   #[class(generic)]
   #[error("Invalid constructor")]
   InvalidConstructor,
+  #[class(generic)]
+  #[error("Expanded SQL text would exceed configured limits")]
+  InvalidExpandedSql,
   #[class(range)]
   #[error("The value of column {0} is too large to be represented as a JavaScript number: {1}")]
   NumberTooLarge(i32, i64),

ext/node/ops/sqlite/statement.rs

@@ -373,4 +373,38 @@ impl StatementSync {
   fn set_read_big_ints(&self, enabled: bool) {
     self.use_big_ints.set(enabled);
   }
+
+  #[getter]
+  #[rename("sourceSQL")]
+  #[string]
+  fn source_sql(&self) -> String {
+    // SAFETY: `self.inner` is a valid pointer to a sqlite3_stmt
+    // as it lives as long as the StatementSync instance.
+    unsafe {
+      let raw = ffi::sqlite3_sql(self.inner);
+      std::ffi::CStr::from_ptr(raw as _)
+        .to_string_lossy()
+        .into_owned()
+    }
+  }
+
+  #[getter]
+  #[rename("expandedSQL")]
+  #[string]
+  fn expanded_sql(&self) -> Result<String, SqliteError> {
+    // SAFETY: `self.inner` is a valid pointer to a sqlite3_stmt
+    // as it lives as long as the StatementSync instance.
+    unsafe {
+      let raw = ffi::sqlite3_expanded_sql(self.inner);
+      if raw.is_null() {
+        return Err(SqliteError::InvalidExpandedSql);
+      }
+      let sql = std::ffi::CStr::from_ptr(raw as _)
+        .to_string_lossy()
+        .into_owned();
+      ffi::sqlite3_free(raw as _);
+
+      Ok(sql)
+    }
+  }
 }

tests/unit_node/sqlite_test.ts

@@ -72,6 +72,9 @@ Deno.test("[node/sqlite] StatementSync read bigints are supported", () => {
 
   stmt.setReadBigInts(true);
   assertEquals(stmt.get(), { key: 1n, __proto__: null });
+
+  assertEquals(stmt.sourceSQL, "SELECT * FROM data");
+  assertEquals(stmt.expandedSQL, "SELECT * FROM data");
 });
 
 Deno.test("[node/sqlite] StatementSync integer too large", () => {