Daco Harkes
3cfcc5a8e5
Revert submission 177862 Reason for revert: breaks g3 without https://github.com/flutter/engine/pull/23808 Reverted Changes: I50b3b4c31:[vm/ffi] Roll `package:ffi` to `Allocator` and `Op... I3f5b08c08:[vm/ffi] Change `Pointer<T extends Struct>.ref` to... I6141c193b:[vm/ffi] Disallow empty structs Change-Id: I128e7b096faea650e0ba0850a411eed3e97c00e6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/180185 Reviewed-by: Daco Harkes <dacoharkes@google.com>
Sample code dart:ffi
This is an illustrative sample for how to use dart:ffi.
Prerequirement
For Windows, Linux, and MacOS, you should make sure, sqlite dev lib installed on your system.
Windows user can download dll from https://www.sqlite.org/download.html
If you do not have any sqlite3.dll or so file, you may found error message:
Unhandled exception:
Invalid argument(s): Failed to load dynamic library (126)
#0 _open (dart:ffi-patch/ffi_dynamic_library_patch.dart:13:55)
#1 new DynamicLibrary.open (dart:ffi-patch/ffi_dynamic_library_patch.dart:22:12)
Building and Running this Sample
Building and running this sample is done through pub.
Running pub get and pub run example/main should produce the following output.
$ pub get
Resolving dependencies... (6.8s)
+ analyzer 0.35.4
...
+ yaml 2.1.15
Downloading analyzer 0.35.4...
Downloading kernel 0.3.14...
Downloading front_end 0.1.14...
Changed 47 dependencies!
Precompiling executables... (18.0s)
Precompiled test:test.
$ pub run example/main
1 Chocolade chip cookie Chocolade cookie foo
2 Ginger cookie null 42
3 Cinnamon roll null null
1 Chocolade chip cookie Chocolade cookie foo
2 Ginger cookie null 42
expected exception on accessing result data after close: The result has already been closed.
expected this query to fail: no such column: non_existing_column (Code 1: SQL logic error)
Tutorial
A tutorial walking through the code is available in docs/sqlite-tutorial.md. For information on how to use this package within a Flutter app, see docs/android.md. (Note: iOS is not yet supported).