WIP: geth-tavum

27 files changed, 85 insertions, 4456 deletions

diff --git a/accounts/abi/abi.go b/accounts/abi/abi.go
deleted file mode 100644
index 7af6685..0000000
--- a/accounts/abi/abi.go
+++ /dev/null
@@ -1,192 +0,0 @@
-// Copyright 2015 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/>.
-
-package abi
-
-import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"io"
-
-	"github.com/ava-labs/go-ethereum/common"
-)
-
-// The ABI holds information about a contract's context and available
-// invokable methods. It will allow you to type check function calls and
-// packs data accordingly.
-type ABI struct {
-	Constructor Method
-	Methods     map[string]Method
-	Events      map[string]Event
-}
-
-// JSON returns a parsed ABI interface and error if it failed.
-func JSON(reader io.Reader) (ABI, error) {
-	dec := json.NewDecoder(reader)
-
-	var abi ABI
-	if err := dec.Decode(&abi); err != nil {
-		return ABI{}, err
-	}
-
-	return abi, nil
-}
-
-// Pack the given method name to conform the ABI. Method call's data
-// will consist of method_id, args0, arg1, ... argN. Method id consists
-// of 4 bytes and arguments are all 32 bytes.
-// Method ids are created from the first 4 bytes of the hash of the
-// methods string signature. (signature = baz(uint32,string32))
-func (abi ABI) Pack(name string, args ...interface{}) ([]byte, error) {
-	// Fetch the ABI of the requested method
-	if name == "" {
-		// constructor
-		arguments, err := abi.Constructor.Inputs.Pack(args...)
-		if err != nil {
-			return nil, err
-		}
-		return arguments, nil
-	}
-	method, exist := abi.Methods[name]
-	if !exist {
-		return nil, fmt.Errorf("method '%s' not found", name)
-	}
-	arguments, err := method.Inputs.Pack(args...)
-	if err != nil {
-		return nil, err
-	}
-	// Pack up the method ID too if not a constructor and return
-	return append(method.ID(), arguments...), nil
-}
-
-// Unpack output in v according to the abi specification
-func (abi ABI) Unpack(v interface{}, name string, data []byte) (err error) {
-	if len(data) == 0 {
-		return fmt.Errorf("abi: unmarshalling empty output")
-	}
-	// since there can't be naming collisions with contracts and events,
-	// we need to decide whether we're calling a method or an event
-	if method, ok := abi.Methods[name]; ok {
-		if len(data)%32 != 0 {
-			return fmt.Errorf("abi: improperly formatted output: %s - Bytes: [%+v]", string(data), data)
-		}
-		return method.Outputs.Unpack(v, data)
-	}
-	if event, ok := abi.Events[name]; ok {
-		return event.Inputs.Unpack(v, data)
-	}
-	return fmt.Errorf("abi: could not locate named method or event")
-}
-
-// UnpackIntoMap unpacks a log into the provided map[string]interface{}
-func (abi ABI) UnpackIntoMap(v map[string]interface{}, name string, data []byte) (err error) {
-	if len(data) == 0 {
-		return fmt.Errorf("abi: unmarshalling empty output")
-	}
-	// since there can't be naming collisions with contracts and events,
-	// we need to decide whether we're calling a method or an event
-	if method, ok := abi.Methods[name]; ok {
-		if len(data)%32 != 0 {
-			return fmt.Errorf("abi: improperly formatted output")
-		}
-		return method.Outputs.UnpackIntoMap(v, data)
-	}
-	if event, ok := abi.Events[name]; ok {
-		return event.Inputs.UnpackIntoMap(v, data)
-	}
-	return fmt.Errorf("abi: could not locate named method or event")
-}
-
-// UnmarshalJSON implements json.Unmarshaler interface
-func (abi *ABI) UnmarshalJSON(data []byte) error {
-	var fields []struct {
-		Type      string
-		Name      string
-		Constant  bool
-		Anonymous bool
-		Inputs    []Argument
-		Outputs   []Argument
-	}
-	if err := json.Unmarshal(data, &fields); err != nil {
-		return err
-	}
-	abi.Methods = make(map[string]Method)
-	abi.Events = make(map[string]Event)
-	for _, field := range fields {
-		switch field.Type {
-		case "constructor":
-			abi.Constructor = Method{
-				Inputs: field.Inputs,
-			}
-		// empty defaults to function according to the abi spec
-		case "function", "":
-			name := field.Name
-			_, ok := abi.Methods[name]
-			for idx := 0; ok; idx++ {
-				name = fmt.Sprintf("%s%d", field.Name, idx)
-				_, ok = abi.Methods[name]
-			}
-			abi.Methods[name] = Method{
-				Name:    name,
-				RawName: field.Name,
-				Const:   field.Constant,
-				Inputs:  field.Inputs,
-				Outputs: field.Outputs,
-			}
-		case "event":
-			name := field.Name
-			_, ok := abi.Events[name]
-			for idx := 0; ok; idx++ {
-				name = fmt.Sprintf("%s%d", field.Name, idx)
-				_, ok = abi.Events[name]
-			}
-			abi.Events[name] = Event{
-				Name:      name,
-				RawName:   field.Name,
-				Anonymous: field.Anonymous,
-				Inputs:    field.Inputs,
-			}
-		}
-	}
-
-	return nil
-}
-
-// MethodById looks up a method by the 4-byte id
-// returns nil if none found
-func (abi *ABI) MethodById(sigdata []byte) (*Method, error) {
-	if len(sigdata) < 4 {
-		return nil, fmt.Errorf("data too short (%d bytes) for abi method lookup", len(sigdata))
-	}
-	for _, method := range abi.Methods {
-		if bytes.Equal(method.ID(), sigdata[:4]) {
-			return &method, nil
-		}
-	}
-	return nil, fmt.Errorf("no method with id: %#x", sigdata[:4])
-}
-
-// EventByID looks an event up by its topic hash in the
-// ABI and returns nil if none found.
-func (abi *ABI) EventByID(topic common.Hash) (*Event, error) {
-	for _, event := range abi.Events {
-		if bytes.Equal(event.ID().Bytes(), topic.Bytes()) {
-			return &event, nil
-		}
-	}
-	return nil, fmt.Errorf("no event with id: %#x", topic.Hex())
-}
diff --git a/accounts/abi/argument.go b/accounts/abi/argument.go
deleted file mode 100644
index 4dae586..0000000
--- a/accounts/abi/argument.go
+++ /dev/null
@@ -1,365 +0,0 @@
-// Copyright 2015 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/>.
-
-package abi
-
-import (
-	"encoding/json"
-	"fmt"
-	"reflect"
-	"strings"
-)
-
-// Argument holds the name of the argument and the corresponding type.
-// Types are used when packing and testing arguments.
-type Argument struct {
-	Name    string
-	Type    Type
-	Indexed bool // indexed is only used by events
-}
-
-type Arguments []Argument
-
-type ArgumentMarshaling struct {
-	Name       string
-	Type       string
-	Components []ArgumentMarshaling
-	Indexed    bool
-}
-
-// UnmarshalJSON implements json.Unmarshaler interface
-func (argument *Argument) UnmarshalJSON(data []byte) error {
-	var arg ArgumentMarshaling
-	err := json.Unmarshal(data, &arg)
-	if err != nil {
-		return fmt.Errorf("argument json err: %v", err)
-	}
-
-	argument.Type, err = NewType(arg.Type, arg.Components)
-	if err != nil {
-		return err
-	}
-	argument.Name = arg.Name
-	argument.Indexed = arg.Indexed
-
-	return nil
-}
-
-// LengthNonIndexed returns the number of arguments when not counting 'indexed' ones. Only events
-// can ever have 'indexed' arguments, it should always be false on arguments for method input/output
-func (arguments Arguments) LengthNonIndexed() int {
-	out := 0
-	for _, arg := range arguments {
-		if !arg.Indexed {
-			out++
-		}
-	}
-	return out
-}
-
-// NonIndexed returns the arguments with indexed arguments filtered out
-func (arguments Arguments) NonIndexed() Arguments {
-	var ret []Argument
-	for _, arg := range arguments {
-		if !arg.Indexed {
-			ret = append(ret, arg)
-		}
-	}
-	return ret
-}
-
-// isTuple returns true for non-atomic constructs, like (uint,uint) or uint[]
-func (arguments Arguments) isTuple() bool {
-	return len(arguments) > 1
-}
-
-// Unpack performs the operation hexdata -> Go format
-func (arguments Arguments) Unpack(v interface{}, data []byte) error {
-	// make sure the passed value is arguments pointer
-	if reflect.Ptr != reflect.ValueOf(v).Kind() {
-		return fmt.Errorf("abi: Unpack(non-pointer %T)", v)
-	}
-	marshalledValues, err := arguments.UnpackValues(data)
-	if err != nil {
-		return err
-	}
-	if arguments.isTuple() {
-		return arguments.unpackTuple(v, marshalledValues)
-	}
-	return arguments.unpackAtomic(v, marshalledValues[0])
-}
-
-// UnpackIntoMap performs the operation hexdata -> mapping of argument name to argument value
-func (arguments Arguments) UnpackIntoMap(v map[string]interface{}, data []byte) error {
-	marshalledValues, err := arguments.UnpackValues(data)
-	if err != nil {
-		return err
-	}
-
-	return arguments.unpackIntoMap(v, marshalledValues)
-}
-
-// unpack sets the unmarshalled value to go format.
-// Note the dst here must be settable.
-func unpack(t *Type, dst interface{}, src interface{}) error {
-	var (
-		dstVal = reflect.ValueOf(dst).Elem()
-		srcVal = reflect.ValueOf(src)
-	)
-	tuple, typ := false, t
-	for {
-		if typ.T == SliceTy || typ.T == ArrayTy {
-			typ = typ.Elem
-			continue
-		}
-		tuple = typ.T == TupleTy
-		break
-	}
-	if !tuple {
-		return set(dstVal, srcVal)
-	}
-
-	// Dereferences interface or pointer wrapper
-	dstVal = indirectInterfaceOrPtr(dstVal)
-
-	switch t.T {
-	case TupleTy:
-		if dstVal.Kind() != reflect.Struct {
-			return fmt.Errorf("abi: invalid dst value for unpack, want struct, got %s", dstVal.Kind())
-		}
-		fieldmap, err := mapArgNamesToStructFields(t.TupleRawNames, dstVal)
-		if err != nil {
-			return err
-		}
-		for i, elem := range t.TupleElems {
-			fname := fieldmap[t.TupleRawNames[i]]
-			field := dstVal.FieldByName(fname)
-			if !field.IsValid() {
-				return fmt.Errorf("abi: field %s can't found in the given value", t.TupleRawNames[i])
-			}
-			if err := unpack(elem, field.Addr().Interface(), srcVal.Field(i).Interface()); err != nil {
-				return err
-			}
-		}
-		return nil
-	case SliceTy:
-		if dstVal.Kind() != reflect.Slice {
-			return fmt.Errorf("abi: invalid dst value for unpack, want slice, got %s", dstVal.Kind())
-		}
-		slice := reflect.MakeSlice(dstVal.Type(), srcVal.Len(), srcVal.Len())
-		for i := 0; i < slice.Len(); i++ {
-			if err := unpack(t.Elem, slice.Index(i).Addr().Interface(), srcVal.Index(i).Interface()); err != nil {
-				return err
-			}
-		}
-		dstVal.Set(slice)
-	case ArrayTy:
-		if dstVal.Kind() != reflect.Array {
-			return fmt.Errorf("abi: invalid dst value for unpack, want array, got %s", dstVal.Kind())
-		}
-		array := reflect.New(dstVal.Type()).Elem()
-		for i := 0; i < array.Len(); i++ {
-			if err := unpack(t.Elem, array.Index(i).Addr().Interface(), srcVal.Index(i).Interface()); err != nil {
-				return err
-			}
-		}
-		dstVal.Set(array)
-	}
-	return nil
-}
-
-// unpackIntoMap unpacks marshalledValues into the provided map[string]interface{}
-func (arguments Arguments) unpackIntoMap(v map[string]interface{}, marshalledValues []interface{}) error {
-	// Make sure map is not nil
-	if v == nil {
-		return fmt.Errorf("abi: cannot unpack into a nil map")
-	}
-
-	for i, arg := range arguments.NonIndexed() {
-		v[arg.Name] = marshalledValues[i]
-	}
-	return nil
-}
-
-// unpackAtomic unpacks ( hexdata -> go ) a single value
-func (arguments Arguments) unpackAtomic(v interface{}, marshalledValues interface{}) error {
-	if arguments.LengthNonIndexed() == 0 {
-		return nil
-	}
-	argument := arguments.NonIndexed()[0]
-	elem := reflect.ValueOf(v).Elem()
-
-	if elem.Kind() == reflect.Struct && argument.Type.T != TupleTy {
-		fieldmap, err := mapArgNamesToStructFields([]string{argument.Name}, elem)
-		if err != nil {
-			return err
-		}
-		field := elem.FieldByName(fieldmap[argument.Name])
-		if !field.IsValid() {
-			return fmt.Errorf("abi: field %s can't be found in the given value", argument.Name)
-		}
-		return unpack(&argument.Type, field.Addr().Interface(), marshalledValues)
-	}
-	return unpack(&argument.Type, elem.Addr().Interface(), marshalledValues)
-}
-
-// unpackTuple unpacks ( hexdata -> go ) a batch of values.
-func (arguments Arguments) unpackTuple(v interface{}, marshalledValues []interface{}) error {
-	var (
-		value = reflect.ValueOf(v).Elem()
-		typ   = value.Type()
-		kind  = value.Kind()
-	)
-	if err := requireUnpackKind(value, typ, kind, arguments); err != nil {
-		return err
-	}
-
-	// If the interface is a struct, get of abi->struct_field mapping
-	var abi2struct map[string]string
-	if kind == reflect.Struct {
-		var (
-			argNames []string
-			err      error
-		)
-		for _, arg := range arguments.NonIndexed() {
-			argNames = append(argNames, arg.Name)
-		}
-		abi2struct, err = mapArgNamesToStructFields(argNames, value)
-		if err != nil {
-			return err
-		}
-	}
-	for i, arg := range arguments.NonIndexed() {
-		switch kind {
-		case reflect.Struct:
-			field := value.FieldByName(abi2struct[arg.Name])
-			if !field.IsValid() {
-				return fmt.Errorf("abi: field %s can't be found in the given value", arg.Name)
-			}
-			if err := unpack(&arg.Type, field.Addr().Interface(), marshalledValues[i]); err != nil {
-				return err
-			}
-		case reflect.Slice, reflect.Array:
-			if value.Len() < i {
-				return fmt.Errorf("abi: insufficient number of arguments for unpack, want %d, got %d", len(arguments), value.Len())
-			}
-			v := value.Index(i)
-			if err := requireAssignable(v, reflect.ValueOf(marshalledValues[i])); err != nil {
-				return err
-			}
-			if err := unpack(&arg.Type, v.Addr().Interface(), marshalledValues[i]); err != nil {
-				return err
-			}
-		default:
-			return fmt.Errorf("abi:[2] cannot unmarshal tuple in to %v", typ)
-		}
-	}
-	return nil
-
-}
-
-// UnpackValues can be used to unpack ABI-encoded hexdata according to the ABI-specification,
-// without supplying a struct to unpack into. Instead, this method returns a list containing the
-// values. An atomic argument will be a list with one element.
-func (arguments Arguments) UnpackValues(data []byte) ([]interface{}, error) {
-	retval := make([]interface{}, 0, arguments.LengthNonIndexed())
-	virtualArgs := 0
-	for index, arg := range arguments.NonIndexed() {
-		marshalledValue, err := toGoType((index+virtualArgs)*32, arg.Type, data)
-		if arg.Type.T == ArrayTy && !isDynamicType(arg.Type) {
-			// If we have a static array, like [3]uint256, these are coded as
-			// just like uint256,uint256,uint256.
-			// This means that we need to add two 'virtual' arguments when
-			// we count the index from now on.
-			//
-			// Array values nested multiple levels deep are also encoded inline:
-			// [2][3]uint256: uint256,uint256,uint256,uint256,uint256,uint256
-			//
-			// Calculate the full array size to get the correct offset for the next argument.
-			// Decrement it by 1, as the normal index increment is still applied.
-			virtualArgs += getTypeSize(arg.Type)/32 - 1
-		} else if arg.Type.T == TupleTy && !isDynamicType(arg.Type) {
-			// If we have a static tuple, like (uint256, bool, uint256), these are
-			// coded as just like uint256,bool,uint256
-			virtualArgs += getTypeSize(arg.Type)/32 - 1
-		}
-		if err != nil {
-			return nil, err
-		}
-		retval = append(retval, marshalledValue)
-	}
-	return retval, nil
-}
-
-// PackValues performs the operation Go format -> Hexdata
-// It is the semantic opposite of UnpackValues
-func (arguments Arguments) PackValues(args []interface{}) ([]byte, error) {
-	return arguments.Pack(args...)
-}
-
-// Pack performs the operation Go format -> Hexdata
-func (arguments Arguments) Pack(args ...interface{}) ([]byte, error) {
-	// Make sure arguments match up and pack them
-	abiArgs := arguments
-	if len(args) != len(abiArgs) {
-		return nil, fmt.Errorf("argument count mismatch: %d for %d", len(args), len(abiArgs))
-	}
-	// variable input is the output appended at the end of packed
-	// output. This is used for strings and bytes types input.
-	var variableInput []byte
-
-	// input offset is the bytes offset for packed output
-	inputOffset := 0
-	for _, abiArg := range abiArgs {
-		inputOffset += getTypeSize(abiArg.Type)
-	}
-	var ret []byte
-	for i, a := range args {
-		input := abiArgs[i]
-		// pack the input
-		packed, err := input.Type.pack(reflect.ValueOf(a))
-		if err != nil {
-			return nil, err
-		}
-		// check for dynamic types
-		if isDynamicType(input.Type) {
-			// set the offset
-			ret = append(ret, packNum(reflect.ValueOf(inputOffset))...)
-			// calculate next offset
-			inputOffset += len(packed)
-			// append to variable input
-			variableInput = append(variableInput, packed...)
-		} else {
-			// append the packed value to the input
-			ret = append(ret, packed...)
-		}
-	}
-	// append the variable input at the end of the packed input
-	ret = append(ret, variableInput...)
-
-	return ret, nil
-}
-
-// ToCamelCase converts an under-score string to a camel-case string
-func ToCamelCase(input string) string {
-	parts := strings.Split(input, "_")
-	for i, s := range parts {
-		if len(s) > 0 {
-			parts[i] = strings.ToUpper(s[:1]) + s[1:]
-		}
-	}
-	return strings.Join(parts, "")
-}
diff --git a/accounts/abi/bind/auth.go b/accounts/abi/bind/auth.go
deleted file mode 100644
index c916cc4..0000000
--- a/accounts/abi/bind/auth.go
+++ /dev/null
@@ -1,96 +0,0 @@
-// 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/>.
-
-package bind
-
-import (
-	"crypto/ecdsa"
-	"errors"
-	"io"
-	"io/ioutil"
-
-	"github.com/ava-labs/coreth/accounts"
-	"github.com/ava-labs/coreth/accounts/external"
-	"github.com/ava-labs/coreth/accounts/keystore"
-	"github.com/ava-labs/coreth/core/types"
-	"github.com/ava-labs/go-ethereum/common"
-	"github.com/ava-labs/go-ethereum/crypto"
-)
-
-// NewTransactor is a utility method to easily create a transaction signer from
-// an encrypted json key stream and the associated passphrase.
-func NewTransactor(keyin io.Reader, passphrase string) (*TransactOpts, error) {
-	json, err := ioutil.ReadAll(keyin)
-	if err != nil {
-		return nil, err
-	}
-	key, err := keystore.DecryptKey(json, passphrase)
-	if err != nil {
-		return nil, err
-	}
-	return NewKeyedTransactor(key.PrivateKey), nil
-}
-
-// NewKeyStoreTransactor is a utility method to easily create a transaction signer from
-// an decrypted key from a keystore
-func NewKeyStoreTransactor(keystore *keystore.KeyStore, account accounts.Account) (*TransactOpts, error) {
-	return &TransactOpts{
-		From: account.Address,
-		Signer: func(signer types.Signer, address common.Address, tx *types.Transaction) (*types.Transaction, error) {
-			if address != account.Address {
-				return nil, errors.New("not authorized to sign this account")
-			}
-			signature, err := keystore.SignHash(account, signer.Hash(tx).Bytes())
-			if err != nil {
-				return nil, err
-			}
-			return tx.WithSignature(signer, signature)
-		},
-	}, nil
-}
-
-// NewKeyedTransactor is a utility method to easily create a transaction signer
-// from a single private key.
-func NewKeyedTransactor(key *ecdsa.PrivateKey) *TransactOpts {
-	keyAddr := crypto.PubkeyToAddress(key.PublicKey)
-	return &TransactOpts{
-		From: keyAddr,
-		Signer: func(signer types.Signer, address common.Address, tx *types.Transaction) (*types.Transaction, error) {
-			if address != keyAddr {
-				return nil, errors.New("not authorized to sign this account")
-			}
-			signature, err := crypto.Sign(signer.Hash(tx).Bytes(), key)
-			if err != nil {
-				return nil, err
-			}
-			return tx.WithSignature(signer, signature)
-		},
-	}
-}
-
-// NewClefTransactor is a utility method to easily create a transaction signer
-// with a clef backend.
-func NewClefTransactor(clef *external.ExternalSigner, account accounts.Account) *TransactOpts {
-	return &TransactOpts{
-		From: account.Address,
-		Signer: func(signer types.Signer, address common.Address, transaction *types.Transaction) (*types.Transaction, error) {
-			if address != account.Address {
-				return nil, errors.New("not authorized to sign this account")
-			}
-			return clef.SignTx(account, transaction, nil) // Clef enforces its own chain id
-		},
-	}
-}
diff --git a/accounts/abi/bind/backend.go b/accounts/abi/bind/backend.go
deleted file mode 100644
index 556394f..0000000
--- a/accounts/abi/bind/backend.go
+++ /dev/null
@@ -1,112 +0,0 @@
-// Copyright 2015 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/>.
-
-package bind
-
-import (
-	"context"
-	"errors"
-	"math/big"
-
-	"github.com/ava-labs/coreth/core/types"
-	"github.com/ava-labs/go-ethereum"
-	"github.com/ava-labs/go-ethereum/common"
-)
-
-var (
-	// ErrNoCode is returned by call and transact operations for which the requested
-	// recipient contract to operate on does not exist in the state db or does not
-	// have any code associated with it (i.e. suicided).
-	ErrNoCode = errors.New("no contract code at given address")
-
-	// This error is raised when attempting to perform a pending state action
-	// on a backend that doesn't implement PendingContractCaller.
-	ErrNoPendingState = errors.New("backend does not support pending state")
-
-	// This error is returned by WaitDeployed if contract creation leaves an
-	// empty contract behind.
-	ErrNoCodeAfterDeploy = errors.New("no contract code after deployment")
-)
-
-// ContractCaller defines the methods needed to allow operating with contract on a read
-// only basis.
-type ContractCaller interface {
-	// CodeAt returns the code of the given account. This is needed to differentiate
-	// between contract internal errors and the local chain being out of sync.
-	CodeAt(ctx context.Context, contract common.Address, blockNumber *big.Int) ([]byte, error)
-	// ContractCall executes an Ethereum contract call with the specified data as the
-	// input.
-	CallContract(ctx context.Context, call ethereum.CallMsg, blockNumber *big.Int) ([]byte, error)
-}
-
-// PendingContractCaller defines methods to perform contract calls on the pending state.
-// Call will try to discover this interface when access to the pending state is requested.
-// If the backend does not support the pending state, Call returns ErrNoPendingState.
-type PendingContractCaller interface {
-	// PendingCodeAt returns the code of the given account in the pending state.
-	PendingCodeAt(ctx context.Context, contract common.Address) ([]byte, error)
-	// PendingCallContract executes an Ethereum contract call against the pending state.
-	PendingCallContract(ctx context.Context, call ethereum.CallMsg) ([]byte, error)
-}
-
-// ContractTransactor defines the methods needed to allow operating with contract
-// on a write only basis. Beside the transacting method, the remainder are helpers
-// used when the user does not provide some needed values, but rather leaves it up
-// to the transactor to decide.
-type ContractTransactor interface {
-	// PendingCodeAt returns the code of the given account in the pending state.
-	PendingCodeAt(ctx context.Context, account common.Address) ([]byte, error)
-	// PendingNonceAt retrieves the current pending nonce associated with an account.
-	PendingNonceAt(ctx context.Context, account common.Address) (uint64, error)
-	// SuggestGasPrice retrieves the currently suggested gas price to allow a timely
-	// execution of a transaction.
-	SuggestGasPrice(ctx context.Context) (*big.Int, error)
-	// EstimateGas tries to estimate the gas needed to execute a specific
-	// transaction based on the current pending state of the backend blockchain.
-	// There is no guarantee that this is the true gas limit requirement as other
-	// transactions may be added or removed by miners, but it should provide a basis
-	// for setting a reasonable default.
-	EstimateGas(ctx context.Context, call ethereum.CallMsg) (gas uint64, err error)
-	// SendTransaction injects the transaction into the pending pool for execution.
-	SendTransaction(ctx context.Context, tx *types.Transaction) error
-}
-
-// ContractFilterer defines the methods needed to access log events using one-off
-// queries or continuous event subscriptions.
-type ContractFilterer interface {
-	// FilterLogs executes a log filter operation, blocking during execution and
-	// returning all the results in one batch.
-	//
-	// TODO(karalabe): Deprecate when the subscription one can return past data too.
-	FilterLogs(ctx context.Context, query ethereum.FilterQuery) ([]types.Log, error)
-
-	// SubscribeFilterLogs creates a background log filtering operation, returning
-	// a subscription immediately, which can be used to stream the found events.
-	SubscribeFilterLogs(ctx context.Context, query ethereum.FilterQuery, ch chan<- types.Log) (ethereum.Subscription, error)
-}
-
-// DeployBackend wraps the operations needed by WaitMined and WaitDeployed.
-type DeployBackend interface {
-	TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error)
-	CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error)
-}
-
-// ContractBackend defines the methods needed to work with contracts on a read-write basis.
-type ContractBackend interface {
-	ContractCaller
-	ContractTransactor
-	ContractFilterer
-}
diff --git a/accounts/abi/bind/backends/simulated.go b/accounts/abi/bind/backends/simulated.go
deleted file mode 100644
index 88610a4..0000000
--- a/accounts/abi/bind/backends/simulated.go
+++ /dev/null
@@ -1,523 +0,0 @@
-// Copyright 2015 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