From 78745551c077bf54151202138c2629f288769561 Mon Sep 17 00:00:00 2001 From: Determinant Date: Tue, 15 Sep 2020 23:55:34 -0400 Subject: WIP: geth-tavum --- accounts/abi/bind/topics.go | 241 -------------------------------------------- 1 file changed, 241 deletions(-) delete mode 100644 accounts/abi/bind/topics.go (limited to 'accounts/abi/bind/topics.go') diff --git a/accounts/abi/bind/topics.go b/accounts/abi/bind/topics.go deleted file mode 100644 index 58e4ff3..0000000 --- a/accounts/abi/bind/topics.go +++ /dev/null @@ -1,241 +0,0 @@ -// Copyright 2018 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 . - -package bind - -import ( - "encoding/binary" - "errors" - "fmt" - "math/big" - "reflect" - - "github.com/ava-labs/coreth/accounts/abi" - "github.com/ava-labs/go-ethereum/common" - "github.com/ava-labs/go-ethereum/crypto" -) - -// makeTopics converts a filter query argument list into a filter topic set. -func makeTopics(query ...[]interface{}) ([][]common.Hash, error) { - topics := make([][]common.Hash, len(query)) - for i, filter := range query { - for _, rule := range filter { - var topic common.Hash - - // Try to generate the topic based on simple types - switch rule := rule.(type) { - case common.Hash: - copy(topic[:], rule[:]) - case common.Address: - copy(topic[common.HashLength-common.AddressLength:], rule[:]) - case *big.Int: - blob := rule.Bytes() - copy(topic[common.HashLength-len(blob):], blob) - case bool: - if rule { - topic[common.HashLength-1] = 1 - } - case int8: - blob := big.NewInt(int64(rule)).Bytes() - copy(topic[common.HashLength-len(blob):], blob) - case int16: - blob := big.NewInt(int64(rule)).Bytes() - copy(topic[common.HashLength-len(blob):], blob) - case int32: - blob := big.NewInt(int64(rule)).Bytes() - copy(topic[common.HashLength-len(blob):], blob) - case int64: - blob := big.NewInt(rule).Bytes() - copy(topic[common.HashLength-len(blob):], blob) - case uint8: - blob := new(big.Int).SetUint64(uint64(rule)).Bytes() - copy(topic[common.HashLength-len(blob):], blob) - case uint16: - blob := new(big.Int).SetUint64(uint64(rule)).Bytes() - copy(topic[common.HashLength-len(blob):], blob) - case uint32: - blob := new(big.Int).SetUint64(uint64(rule)).Bytes() - copy(topic[common.HashLength-len(blob):], blob) - case uint64: - blob := new(big.Int).SetUint64(rule).Bytes() - copy(topic[common.HashLength-len(blob):], blob) - case string: - hash := crypto.Keccak256Hash([]byte(rule)) - copy(topic[:], hash[:]) - case []byte: - hash := crypto.Keccak256Hash(rule) - copy(topic[:], hash[:]) - - default: - // Attempt to generate the topic from funky types - val := reflect.ValueOf(rule) - - switch { - - // static byte array - case val.Kind() == reflect.Array && reflect.TypeOf(rule).Elem().Kind() == reflect.Uint8: - reflect.Copy(reflect.ValueOf(topic[:val.Len()]), val) - - default: - return nil, fmt.Errorf("unsupported indexed type: %T", rule) - } - } - topics[i] = append(topics[i], topic) - } - } - return topics, nil -} - -// Big batch of reflect types for topic reconstruction. -var ( - reflectHash = reflect.TypeOf(common.Hash{}) - reflectAddress = reflect.TypeOf(common.Address{}) - reflectBigInt = reflect.TypeOf(new(big.Int)) -) - -// parseTopics converts the indexed topic fields into actual log field values. -// -// Note, dynamic types cannot be reconstructed since they get mapped to Keccak256 -// hashes as the topic value! -func parseTopics(out interface{}, fields abi.Arguments, topics []common.Hash) error { - // Sanity check that the fields and topics match up - if len(fields) != len(topics) { - return errors.New("topic/field count mismatch") - } - // Iterate over all the fields and reconstruct them from topics - for _, arg := range fields { - if !arg.Indexed { - return errors.New("non-indexed field in topic reconstruction") - } - field := reflect.ValueOf(out).Elem().FieldByName(capitalise(arg.Name)) - - // Try to parse the topic back into the fields based on primitive types - switch field.Kind() { - case reflect.Bool: - if topics[0][common.HashLength-1] == 1 { - field.Set(reflect.ValueOf(true)) - } - case reflect.Int8: - num := new(big.Int).SetBytes(topics[0][:]) - field.Set(reflect.ValueOf(int8(num.Int64()))) - - case reflect.Int16: - num := new(big.Int).SetBytes(topics[0][:]) - field.Set(reflect.ValueOf(int16(num.Int64()))) - - case reflect.Int32: - num := new(big.Int).SetBytes(topics[0][:]) - field.Set(reflect.ValueOf(int32(num.Int64()))) - - case reflect.Int64: - num := new(big.Int).SetBytes(topics[0][:]) - field.Set(reflect.ValueOf(num.Int64())) - - case reflect.Uint8: - num := new(big.Int).SetBytes(topics[0][:]) - field.Set(reflect.ValueOf(uint8(num.Uint64()))) - - case reflect.Uint16: - num := new(big.Int).SetBytes(topics[0][:]) - field.Set(reflect.ValueOf(uint16(num.Uint64()))) - - case reflect.Uint32: - num := new(big.Int).SetBytes(topics[0][:]) - field.Set(reflect.ValueOf(uint32(num.Uint64()))) - - case reflect.Uint64: - num := new(big.Int).SetBytes(topics[0][:]) - field.Set(reflect.ValueOf(num.Uint64())) - - default: - // Ran out of plain primitive types, try custom types - switch field.Type() { - case reflectHash: // Also covers all dynamic types - field.Set(reflect.ValueOf(topics[0])) - - case reflectAddress: - var addr common.Address - copy(addr[:], topics[0][common.HashLength-common.AddressLength:]) - field.Set(reflect.ValueOf(addr)) - - case reflectBigInt: - num := new(big.Int).SetBytes(topics[0][:]) - field.Set(reflect.ValueOf(num)) - - default: - // Ran out of custom types, try the crazies - switch { - - // static byte array - case arg.Type.T == abi.FixedBytesTy: - reflect.Copy(field, reflect.ValueOf(topics[0][:arg.Type.Size])) - - default: - return fmt.Errorf("unsupported indexed type: %v", arg.Type) - } - } - } - topics = topics[1:] - } - return nil -} - -// parseTopicsIntoMap converts the indexed topic field-value pairs into map key-value pairs -func parseTopicsIntoMap(out map[string]interface{}, fields abi.Arguments, topics []common.Hash) error { - // Sanity check that the fields and topics match up - if len(fields) != len(topics) { - return errors.New("topic/field count mismatch") - } - // Iterate over all the fields and reconstruct them from topics - for _, arg := range fields { - if !arg.Indexed { - return errors.New("non-indexed field in topic reconstruction") - } - - switch arg.Type.T { - case abi.BoolTy: - out[arg.Name] = topics[0][common.HashLength-1] == 1 - case abi.IntTy, abi.UintTy: - num := new(big.Int).SetBytes(topics[0][:]) - out[arg.Name] = num - case abi.AddressTy: - var addr common.Address - copy(addr[:], topics[0][common.HashLength-common.AddressLength:]) - out[arg.Name] = addr - case abi.HashTy: - out[arg.Name] = topics[0] - case abi.FixedBytesTy: - out[arg.Name] = topics[0][:] - case abi.StringTy, abi.BytesTy, abi.SliceTy, abi.ArrayTy: - // Array types (including strings and bytes) have their keccak256 hashes stored in the topic- not a hash - // whose bytes can be decoded to the actual value- so the best we can do is retrieve that hash - out[arg.Name] = topics[0] - case abi.FunctionTy: - if garbage := binary.BigEndian.Uint64(topics[0][0:8]); garbage != 0 { - return fmt.Errorf("bind: got improperly encoded function type, got %v", topics[0].Bytes()) - } - var tmp [24]byte - copy(tmp[:], topics[0][8:32]) - out[arg.Name] = tmp - default: // Not handling tuples - return fmt.Errorf("unsupported indexed type: %v", arg.Type) - } - - topics = topics[1:] - } - - return nil -} -- cgit v1.2.3-70-g09d2