summaryrefslogtreecommitdiff
path: root/vendor/github.com/tetratelabs/wazero/internal/wasm/binary/export.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/github.com/tetratelabs/wazero/internal/wasm/binary/export.go')
-rw-r--r--vendor/github.com/tetratelabs/wazero/internal/wasm/binary/export.go32
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
+}