mobile: initial wrappers for mobile support

1 files changed, 148 insertions, 0 deletions

diff --git a/mobile/interface.go b/mobile/interface.go
new file mode 100644
index 000000000..b585b8642
--- /dev/null
+++ b/mobile/interface.go
@@ -0,0 +1,148 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Contains perverted wrappers to allow crossing over empty interfaces.
+
+package geth
+
+import (
+	"errors"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+)
+
+// Interface represents a wrapped version of Go's interface{}, with the capacity
+// to store arbitrary data types.
+//
+// Since it's impossible to get the arbitrary-ness converted between Go and mobile
+// platforms, we're using explicit getters and setters for the conversions. There
+// is of course no point in enumerating everything, just enough to support the
+// contract bindins requiring client side generated code.
+type Interface struct {
+	object interface{}
+}
+
+// NewInterface creates a new empty interface that can be used to pass around
+// generic types.
+func NewInterface() *Interface {
+	return new(Interface)
+}
+
+func (i *Interface) SetBool(b bool)                { i.object = &b }
+func (i *Interface) SetBools(bs []bool)            { i.object = &bs }
+func (i *Interface) SetString(str string)          { i.object = &str }
+func (i *Interface) SetStrings(strs *Strings)      { i.object = &strs.strs }
+func (i *Interface) SetBinary(binary []byte)       { i.object = &binary }
+func (i *Interface) SetBinaries(binaries [][]byte) { i.object = &binaries }
+func (i *Interface) SetAddress(address *Address)   { i.object = &address.address }
+func (i *Interface) SetAddresses(addrs *Addresses) { i.object = &addrs.addresses }
+func (i *Interface) SetHash(hash *Hash)            { i.object = &hash.hash }
+func (i *Interface) SetHashes(hashes *Hashes)      { i.object = &hashes.hashes }
+func (i *Interface) SetInt8(n int8)                { i.object = &n }
+func (i *Interface) SetInt16(n int16)              { i.object = &n }
+func (i *Interface) SetInt32(n int32)              { i.object = &n }
+func (i *Interface) SetInt64(n int64)              { i.object = &n }
+func (i *Interface) SetUint8(bigint *BigInt)       { n := uint8(bigint.bigint.Uint64()); i.object = &n }
+func (i *Interface) SetUint16(bigint *BigInt)      { n := uint16(bigint.bigint.Uint64()); i.object = &n }
+func (i *Interface) SetUint32(bigint *BigInt)      { n := uint32(bigint.bigint.Uint64()); i.object = &n }
+func (i *Interface) SetUint64(bigint *BigInt)      { n := uint64(bigint.bigint.Uint64()); i.object = &n }
+func (i *Interface) SetBigInt(bigint *BigInt)      { i.object = &bigint.bigint }
+func (i *Interface) SetBigInts(bigints *BigInts)   { i.object = &bigints.bigints }
+
+func (i *Interface) SetDefaultBool()      { i.object = new(bool) }
+func (i *Interface) SetDefaultBools()     { i.object = new([]bool) }
+func (i *Interface) SetDefaultString()    { i.object = new(string) }
+func (i *Interface) SetDefaultStrings()   { i.object = new([]string) }
+func (i *Interface) SetDefaultBinary()    { i.object = new([]byte) }
+func (i *Interface) SetDefaultBinaries()  { i.object = new([][]byte) }
+func (i *Interface) SetDefaultAddress()   { i.object = new(common.Address) }
+func (i *Interface) SetDefaultAddresses() { i.object = new([]common.Address) }
+func (i *Interface) SetDefaultHash()      { i.object = new(common.Hash) }
+func (i *Interface) SetDefaultHashes()    { i.object = new([]common.Hash) }
+func (i *Interface) SetDefaultInt8()      { i.object = new(int8) }
+func (i *Interface) SetDefaultInt16()     { i.object = new(int16) }
+func (i *Interface) SetDefaultInt32()     { i.object = new(int32) }
+func (i *Interface) SetDefaultInt64()     { i.object = new(int64) }
+func (i *Interface) SetDefaultUint8()     { i.object = new(uint8) }
+func (i *Interface) SetDefaultUint16()    { i.object = new(uint16) }
+func (i *Interface) SetDefaultUint32()    { i.object = new(uint32) }
+func (i *Interface) SetDefaultUint64()    { i.object = new(uint64) }
+func (i *Interface) SetDefaultBigInt()    { i.object = new(*big.Int) }
+func (i *Interface) SetDefaultBigInts()   { i.object = new([]*big.Int) }
+
+func (i *Interface) GetBool() bool            { return *i.object.(*bool) }
+func (i *Interface) GetBools() []bool         { return *i.object.(*[]bool) }
+func (i *Interface) GetString() string        { return *i.object.(*string) }
+func (i *Interface) GetStrings() *Strings     { return &Strings{*i.object.(*[]string)} }
+func (i *Interface) GetBinary() []byte        { return *i.object.(*[]byte) }
+func (i *Interface) GetBinaries() [][]byte    { return *i.object.(*[][]byte) }
+func (i *Interface) GetAddress() *Address     { return &Address{*i.object.(*common.Address)} }
+func (i *Interface) GetAddresses() *Addresses { return &Addresses{*i.object.(*[]common.Address)} }
+func (i *Interface) GetHash() *Hash           { return &Hash{*i.object.(*common.Hash)} }
+func (i *Interface) GetHashes() *Hashes       { return &Hashes{*i.object.(*[]common.Hash)} }
+func (i *Interface) GetInt8() int8            { return *i.object.(*int8) }
+func (i *Interface) GetInt16() int16          { return *i.object.(*int16) }
+func (i *Interface) GetInt32() int32          { return *i.object.(*int32) }
+func (i *Interface) GetInt64() int64          { return *i.object.(*int64) }
+func (i *Interface) GetUint8() *BigInt {
+	return &BigInt{new(big.Int).SetUint64(uint64(*i.object.(*uint8)))}
+}
+func (i *Interface) GetUint16() *BigInt {
+	return &BigInt{new(big.Int).SetUint64(uint64(*i.object.(*uint16)))}
+}
+func (i *Interface) GetUint32() *BigInt {
+	return &BigInt{new(big.Int).SetUint64(uint64(*i.object.(*uint32)))}
+}
+func (i *Interface) GetUint64() *BigInt {
+	return &BigInt{new(big.Int).SetUint64(*i.object.(*uint64))}
+}
+func (i *Interface) GetBigInt() *BigInt   { return &BigInt{*i.object.(**big.Int)} }
+func (i *Interface) GetBigInts() *BigInts { return &BigInts{*i.object.(*[]*big.Int)} }
+
+// Interfaces is a slices of wrapped generic objects.
+type Interfaces struct {
+	objects []interface{}
+}
+
+// NewInterfaces creates a slice of uninitialized interfaces.
+func NewInterfaces(size int) *Interfaces {
+	return &Interfaces{
+		objects: make([]interface{}, size),
+	}
+}
+
+// Size returns the number of interfaces in the slice.
+func (i *Interfaces) Size() int {
+	return len(i.objects)
+}
+
+// Get returns the bigint at the given index from the slice.
+func (i *Interfaces) Get(index int) (*Interface, error) {
+	if index < 0 || index >= len(i.objects) {
+		return nil, errors.New("index out of bounds")
+	}
+	return &Interface{i.objects[index]}, nil
+}
+
+// Set sets the big int at the given index in the slice.
+func (i *Interfaces) Set(index int, object *Interface) error {
+	if index < 0 || index >= len(i.objects) {
+		return errors.New("index out of bounds")
+	}
+	i.objects[index] = object.object
+	return nil
+}