cmd, core, eth/tracers: support fancier js tracing (#15516)

* cmd, core, eth/tracers: support fancier js tracing

* eth, internal/web3ext: rework trace API, concurrency, chain tracing

* eth/tracers: add three more JavaScript tracers

* eth/tracers, vendor: swap ottovm to duktape for tracing

* core, eth, internal: finalize call tracer and needed extras

* eth, tests: prestate tracer, call test suite, rewinding

* vendor: fix windows builds for tracer js engine

* vendor: temporary duktape fix

* eth/tracers: fix up 4byte and evmdis tracer

* vendor: pull in latest duktape with my upstream fixes

* eth: fix some review comments

* eth: rename rewind to reexec to make it more obvious

* core/vm: terminate tracing using defers

1 files changed, 0 insertions, 147 deletions

diff --git a/internal/ethapi/tracer_test.go b/internal/ethapi/tracer_test.go
deleted file mode 100644
index 0ef450ce3..000000000
--- a/internal/ethapi/tracer_test.go
+++ /dev/null
@@ -1,147 +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 ethapi
-
-import (
-	"errors"
-	"math/big"
-	"reflect"
-	"testing"
-	"time"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core/vm"
-	"github.com/ethereum/go-ethereum/params"
-)
-
-type account struct{}
-
-func (account) SubBalance(amount *big.Int)                          {}
-func (account) AddBalance(amount *big.Int)                          {}
-func (account) SetAddress(common.Address)                           {}
-func (account) Value() *big.Int                                     { return nil }
-func (account) SetBalance(*big.Int)                                 {}
-func (account) SetNonce(uint64)                                     {}
-func (account) Balance() *big.Int                                   { return nil }
-func (account) Address() common.Address                             { return common.Address{} }
-func (account) ReturnGas(*big.Int)                                  {}
-func (account) SetCode(common.Hash, []byte)                         {}
-func (account) ForEachStorage(cb func(key, value common.Hash) bool) {}
-
-func runTrace(tracer *JavascriptTracer) (interface{}, error) {
-	env := vm.NewEVM(vm.Context{}, nil, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer})
-
-	contract := vm.NewContract(account{}, account{}, big.NewInt(0), 10000)
-	contract.Code = []byte{byte(vm.PUSH1), 0x1, byte(vm.PUSH1), 0x1, 0x0}
-
-	_, err := env.Interpreter().Run(contract, []byte{})
-	if err != nil {
-		return nil, err
-	}
-
-	return tracer.GetResult()
-}
-
-func TestTracing(t *testing.T) {
-	tracer, err := NewJavascriptTracer("{count: 0, step: function() { this.count += 1; }, result: function() { return this.count; }}")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	ret, err := runTrace(tracer)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	value, ok := ret.(float64)
-	if !ok {
-		t.Errorf("Expected return value to be float64, was %T", ret)
-	}
-	if value != 3 {
-		t.Errorf("Expected return value to be 3, got %v", value)
-	}
-}
-
-func TestStack(t *testing.T) {
-	tracer, err := NewJavascriptTracer("{depths: [], step: function(log) { this.depths.push(log.stack.length()); }, result: function() { return this.depths; }}")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	ret, err := runTrace(tracer)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	expected := []int{0, 1, 2}
-	if !reflect.DeepEqual(ret, expected) {
-		t.Errorf("Expected return value to be %#v, got %#v", expected, ret)
-	}
-}
-
-func TestOpcodes(t *testing.T) {
-	tracer, err := NewJavascriptTracer("{opcodes: [], step: function(log) { this.opcodes.push(log.op.toString()); }, result: function() { return this.opcodes; }}")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	ret, err := runTrace(tracer)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	expected := []string{"PUSH1", "PUSH1", "STOP"}
-	if !reflect.DeepEqual(ret, expected) {
-		t.Errorf("Expected return value to be %#v, got %#v", expected, ret)
-	}
-}
-
-func TestHalt(t *testing.T) {
-	timeout := errors.New("stahp")
-	tracer, err := NewJavascriptTracer("{step: function() { while(1); }, result: function() { return null; }}")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	go func() {
-		time.Sleep(1 * time.Second)
-		tracer.Stop(timeout)
-	}()
-
-	if _, err = runTrace(tracer); err.Error() != "stahp    in server-side tracer function 'step'" {
-		t.Errorf("Expected timeout error, got %v", err)
-	}
-}
-
-func TestHaltBetweenSteps(t *testing.T) {
-	tracer, err := NewJavascriptTracer("{step: function() {}, result: function() { return null; }}")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	env := vm.NewEVM(vm.Context{}, nil, params.TestChainConfig, vm.Config{Debug: true, Tracer: tracer})
-	contract := vm.NewContract(&account{}, &account{}, big.NewInt(0), 0)
-
-	tracer.CaptureState(env, 0, 0, 0, 0, nil, nil, contract, 0, nil)
-	timeout := errors.New("stahp")
-	tracer.Stop(timeout)
-	tracer.CaptureState(env, 0, 0, 0, 0, nil, nil, contract, 0, nil)
-
-	if _, err := tracer.GetResult(); err.Error() != "stahp    in server-side tracer function 'step'" {
-		t.Errorf("Expected timeout error, got %v", err)
-	}
-}