contracts-bedrock: remove cannon deps on bindings (#10280)

* contracts-bedrock: remove cannon deps on bindings

Removes `cannon` deps on `op-bindings` package following
a pattern similar to #10225.
Includes test coverage of the new functions and is the minimal diff to
get things working.

Ideally there was a canonical forge artifact type that is used but for
now we don't worry about it. This unblocks further work on removing the
bindings from the monorepo, greatly improving devex.

* cannon: cleanup, new approach

* ci: attempt fix

* ci: attempt fix

* ci: fixup

.circleci/config.yml

@@ -123,6 +123,8 @@ jobs:
       - checkout
       - check-changed:
           patterns: cannon,packages/contracts-bedrock/src/cannon,op-preimage,go.mod
+      - attach_workspace:
+          at: "."
       - run:
           name: prep Cannon results dir
           command: mkdir -p /tmp/test-results
@@ -783,12 +785,19 @@ jobs:
       on_changes:
         description: changed pattern to fire fuzzer on
         type: string
+      uses_artifacts:
+        description: should load in foundry artifacts
+        type: boolean
+        default: false
     docker:
       - image: <<pipeline.parameters.ci_builder_image>>
     steps:
       - checkout
       - check-changed:
           patterns: "<<parameters.package_name>>"
+      - attach_workspace:
+          at: "."
+          if: ${{ uses_artifacts }}
       - restore_cache:
           name: Restore Go modules cache
           key: gomod-{{ checksum "go.sum" }}
@@ -1708,7 +1717,8 @@ workflows:
           name: cannon-fuzz
           package_name: cannon
           on_changes: cannon,packages/contracts-bedrock/src/cannon
-          requires: ["go-mod-download"]
+          uses_artifacts: true
+          requires: ["go-mod-download", "pnpm-monorepo"]
       - go-test:
           name: op-heartbeat-tests
           module: op-heartbeat
@@ -1907,7 +1917,9 @@ workflows:
           docker_tags: <<pipeline.git.revision>>,<<pipeline.git.branch>>
       - check-generated-mocks-op-node
       - check-generated-mocks-op-service
-      - cannon-go-lint-and-test
+      - cannon-go-lint-and-test:
+          requires:
+            - pnpm-monorepo
       - cannon-build-test-vectors
       - shellcheck/check:
           name: shell-check

cannon/mipsevm/evm.go

@@ -2,8 +2,10 @@ package mipsevm
 
 import (
 	"encoding/binary"
+	"encoding/json"
 	"fmt"
 	"math/big"
+	"os"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
@@ -15,28 +17,48 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/params"
-
-	"github.com/ethereum-optimism/optimism/op-bindings/bindings"
 )
 
-// LoadContracts loads the Cannon contracts, from op-bindings package
+// LoadContracts loads the Cannon contracts, from the contracts package.
 func LoadContracts() (*Contracts, error) {
-	var mips, oracle Contract
-	mips.DeployedBytecode.Object = hexutil.MustDecode(bindings.MIPSDeployedBin)
-	oracle.DeployedBytecode.Object = hexutil.MustDecode(bindings.PreimageOracleDeployedBin)
+	mips, err := loadContract("../../packages/contracts-bedrock/forge-artifacts/MIPS.sol/MIPS.json")
+	if err != nil {
+		return nil, fmt.Errorf("failed to load MIPS contract: %w", err)
+	}
+
+	oracle, err := loadContract("../../packages/contracts-bedrock/forge-artifacts/PreimageOracle.sol/PreimageOracle.json")
+	if err != nil {
+		return nil, fmt.Errorf("failed to load Oracle contract: %w", err)
+	}
+
 	return &Contracts{
-		MIPS:   &mips,
-		Oracle: &oracle,
+		MIPS:   mips,
+		Oracle: oracle,
 	}, nil
 }
 
+func loadContract(path string) (*Contract, error) {
+	file, err := os.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("artifact at %s not found: %w", path, err)
+	}
+
+	contract := Contract{}
+	if err := json.Unmarshal(file, &contract); err != nil {
+		return nil, err
+	}
+	return &contract, nil
+}
+
 type Contract struct {
 	DeployedBytecode struct {
 		Object    hexutil.Bytes `json:"object"`
 		SourceMap string        `json:"sourceMap"`
 	} `json:"deployedBytecode"`
-
-	// ignore abi,bytecode,etc.
+	Bytecode struct {
+		Object hexutil.Bytes `json:"object"`
+	} `json:"bytecode"`
+	// ignore abi,etc.
 }
 
 type Contracts struct {
@@ -76,7 +98,7 @@ func NewEVMEnv(contracts *Contracts, addrs *Addresses) (*vm.EVM, *state.StateDB)
 
 	var mipsCtorArgs [32]byte
 	copy(mipsCtorArgs[12:], addrs.Oracle[:])
-	mipsDeploy := append(hexutil.MustDecode(bindings.MIPSMetaData.Bin), mipsCtorArgs[:]...)
+	mipsDeploy := append(hexutil.MustDecode(contracts.MIPS.Bytecode.Object.String()), mipsCtorArgs[:]...)
 	startingGas := uint64(30_000_000)
 	_, deployedMipsAddr, leftOverGas, err := env.Create(vm.AccountRef(addrs.Sender), mipsDeploy, startingGas, common.U2560)
 	if err != nil {