FromInterface converts an interface to a big.Int element input must be primitive (uintXX, intXX, []byte, string) or implement BigInt(res *big.Int) (which is the case for gnark-crypto field elements) if the input is a string, it calls (big.Int).SetString(input, 0). In particular: The number prefix
(input interface{})
| 36 | // |
| 37 | // panics if the input is invalid |
| 38 | func FromInterface(input interface{}) big.Int { |
| 39 | var r big.Int |
| 40 | |
| 41 | switch v := input.(type) { |
| 42 | case big.Int: |
| 43 | r.Set(&v) |
| 44 | case *big.Int: |
| 45 | r.Set(v) |
| 46 | case uint8: |
| 47 | r.SetUint64(uint64(v)) |
| 48 | case uint16: |
| 49 | r.SetUint64(uint64(v)) |
| 50 | case uint32: |
| 51 | r.SetUint64(uint64(v)) |
| 52 | case uint64: |
| 53 | r.SetUint64(v) |
| 54 | case uint: |
| 55 | r.SetUint64(uint64(v)) |
| 56 | case int8: |
| 57 | r.SetInt64(int64(v)) |
| 58 | case int16: |
| 59 | r.SetInt64(int64(v)) |
| 60 | case int32: |
| 61 | r.SetInt64(int64(v)) |
| 62 | case int64: |
| 63 | r.SetInt64(v) |
| 64 | case int: |
| 65 | r.SetInt64(int64(v)) |
| 66 | case string: |
| 67 | if _, ok := r.SetString(v, 0); !ok { |
| 68 | panic("unable to set big.Int from string " + v) |
| 69 | } |
| 70 | case []byte: |
| 71 | r.SetBytes(v) |
| 72 | default: |
| 73 | if v, ok := input.(toBigIntInterface); ok { |
| 74 | v.ToBigIntRegular(&r) |
| 75 | return r |
| 76 | } else if reflect.ValueOf(input).Kind() == reflect.Pointer { |
| 77 | vv := reflect.ValueOf(input) |
| 78 | if vv.CanInterface() { |
| 79 | if v, ok := vv.Interface().(toBigIntInterface); ok { |
| 80 | v.ToBigIntRegular(&r) |
| 81 | return r |
| 82 | } |
| 83 | } |
| 84 | } |
| 85 | panic(reflect.TypeOf(input).String() + " to big.Int not supported") |
| 86 | } |
| 87 | |
| 88 | return r |
| 89 | } |
no test coverage detected