Add bindings to multiset

multiset.go

@@ -0,0 +1,80 @@
+package secp256k1
+
+// #include "./depend/secp256k1/include/secp256k1_multiset.h"
+import "C"
+import "errors"
+
+type MultiSet struct {
+	set C.secp256k1_multiset
+}
+
+func NewMultiset() MultiSet {
+	multiset := MultiSet{}
+	ret := C.secp256k1_multiset_init(context, &multiset.set)
+	if ret != 1 {
+		panic("failed intializing a multiset. should never happen")
+	}
+	return multiset
+}
+
+func (multiset *MultiSet) Reset() {
+	ret := C.secp256k1_multiset_init(context, &multiset.set)
+	if ret != 1 {
+		panic("failed intializing a multiset. should never happen")
+	}
+}
+
+func (multiset *MultiSet) Add(data []byte) {
+	cPtrData := (*C.uchar)(&data[0])
+	CLenData := (C.size_t)(len(data))
+	ret := C.secp256k1_multiset_add(context, &multiset.set, cPtrData, CLenData)
+	if ret != 1 {
+		panic("failed adding to the multiset. should never happen")
+	}
+}
+
+func (multiset *MultiSet) Remove(data []byte) {
+	cPtrData := (*C.uchar)(&data[0])
+	CLenData := (C.size_t)(len(data))
+	ret := C.secp256k1_multiset_remove(context, &multiset.set, cPtrData, CLenData)
+	if ret != 1 {
+		panic("failed removing from the multiset. should never happen")
+	}
+}
+
+func (multiset *MultiSet) Combine(input MultiSet) {
+	ret := C.secp256k1_multiset_combine(context, &multiset.set, &input.set)
+	if ret != 1 {
+		panic("failed combining 2 multisets. should never happen")
+	}
+}
+
+func (multiset *MultiSet) Finalize() [32]byte {
+	hash := [32]byte{}
+	cPtrHash := (*C.uchar)(&hash[0])
+	ret := C.secp256k1_multiset_finalize(context, cPtrHash, &multiset.set)
+	if ret != 1 {
+		panic("failed finalizing the multiset. should never happen")
+	}
+	return hash
+}
+
+func (multiset *MultiSet) Serialize() [64]byte {
+	serialized := [64]byte{}
+	cPtrData := (*C.uchar)(&serialized[0])
+	ret := C.secp256k1_multiset_serialize(context, cPtrData, &multiset.set)
+	if ret != 1 {
+		panic("failed serializing the multiset. should never happen")
+	}
+	return serialized
+}
+
+func ParseMultiSet(serialized [64]byte) (multiset *MultiSet, err error) {
+	multiset = &MultiSet{}
+	cPtrData := (*C.uchar)(&serialized[0])
+	ret := C.secp256k1_multiset_parse(context, &multiset.set, cPtrData)
+	if ret != 1 {
+		return nil, errors.New("failed parsing the multiset")
+	}
+	return
+}