[experiment] add alternative wasm sqlite3 implementation available via build-tag (#2863)

This allows for building GoToSocial with [SQLite transpiled to WASM](https://github.com/ncruces/go-sqlite3) and accessed through [Wazero](https://wazero.io/).

1 files changed, 32 insertions, 0 deletions

diff --git a/vendor/github.com/tetratelabs/wazero/internal/wasm/binary/export.go b/vendor/github.com/tetratelabs/wazero/internal/wasm/binary/export.go
new file mode 100644
index 000000000..925e9c499
--- /dev/null
+++ b/vendor/github.com/tetratelabs/wazero/internal/wasm/binary/export.go
@@ -0,0 +1,32 @@
+package binary
+
+import (
+	"bytes"
+	"fmt"
+
+	"github.com/tetratelabs/wazero/internal/leb128"
+	"github.com/tetratelabs/wazero/internal/wasm"
+)
+
+func decodeExport(r *bytes.Reader, ret *wasm.Export) (err error) {
+	if ret.Name, _, err = decodeUTF8(r, "export name"); err != nil {
+		return
+	}
+
+	b, err := r.ReadByte()
+	if err != nil {
+		err = fmt.Errorf("error decoding export kind: %w", err)
+		return
+	}
+
+	ret.Type = b
+	switch ret.Type {
+	case wasm.ExternTypeFunc, wasm.ExternTypeTable, wasm.ExternTypeMemory, wasm.ExternTypeGlobal:
+		if ret.Index, _, err = leb128.DecodeUint32(r); err != nil {
+			err = fmt.Errorf("error decoding export index: %w", err)
+		}
+	default:
+		err = fmt.Errorf("%w: invalid byte for exportdesc: %#x", ErrInvalidByte, b)
+	}
+	return
+}