feat: use geth abi parsing and inherit gobindings for ops gen

[RayXpub]

Summary

This PR introduces the following changes

Type-safe ABI parsing via go-ethereum/accounts/abi

Previous implementation parsed the ABI using encoding/json and a static typeMap for Solidity→Go type conversion. The map only covers explicitly listed sizes (uint96, uint128, uint256; bytes4, bytes16, bytes32; etc.); any type not in the map silently falls back to any.

The code now relies on github.com/ethereum/go-ethereum/accounts/abi directly, which gives the same complete, size-aware type resolution that abigen uses. It also gives TupleRawName (the exact struct name abigen assigns to tuple types) and automatic overloaded-function disambiguation.

No generated contract struct or interface

Previous implementation generated a XxxContract struct wrapping bind.BoundContract, with a NewXxxContract constructor and delegating implementations of every selected method plus Address(), Owner(), etc.

Go bindings already generate XxxInterface with all contract methods. So the new generator instead uses geth_bindings.XxxInterface directly as the contract type parameter in WriteParams and ReadParams. Essentially, generated operations now rely as much as possible on the pre existing gobindings.

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[Copilot]

Pull request overview

This PR updates the EVM operations generator to rely on go-ethereum’s ABI parsing and to generate operations that leverage existing abigen gobindings (interfaces + metadata) rather than generating a custom BoundContract wrapper per contract.

Changes:

• Add gobindings_package to EVM contract YAML config and pass it through to templates for importing gobindings.
• Switch ABI parsing to github.com/ethereum/go-ethereum/accounts/abi and update function/parameter extraction accordingly (including overload handling).
• Update the EVM operations template + golden fixtures to use gobindings metadata/interfaces and adjust generator tests.

Reviewed changes

Copilot reviewed 13 out of 14 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
tools/operations-gen/testdata/evm/operations_gen_mcms_config.yaml	Adds gobindings_package to MCMS test config fixture.
tools/operations-gen/testdata/evm/operations_gen_config.yaml	Adds gobindings_package to LinkToken test config fixture.
tools/operations-gen/testdata/evm/many_chain_multi_sig.golden.go	Updates expected generated output for MCMS to use gobindings (golden).
tools/operations-gen/testdata/evm/link_token.golden.go	Updates expected generated output for LinkToken to use gobindings (golden).
tools/operations-gen/templates/evm/operations.tmpl	Changes the generated code shape to reference gobindings metadata/interfaces and new op constructors.
tools/operations-gen/internal/families/evm/evm.go	Simplifies access-control constants used by the EVM generator.
tools/operations-gen/internal/families/evm/contract.go	Adds gobindings package to ContractInfo, switches to geth ABI parsing, updates function extraction.
tools/operations-gen/internal/families/evm/config.go	Adds required gobindings_package field to YAML config struct.
tools/operations-gen/internal/families/evm/codegen_test.go	Updates tests to avoid removed ABI-entry parsing helpers.
tools/operations-gen/internal/families/evm/codegen.go	Updates template data types and adds multi-return packing support.
tools/operations-gen/internal/families/evm/abi_test.go	Reworks ABI type mapping tests to use geth abi.Type.
tools/operations-gen/internal/families/evm/abi.go	Replaces string-based ABI parsing/type mapping with geth ABI parsing + new mapping logic.
tools/operations-gen/go.mod	Adds go-ethereum dependency (and tidies module).
tools/operations-gen/go.sum	Adds corresponding checksums for new dependencies.

Comments suppressed due to low confidence (1)

tools/operations-gen/internal/families/evm/contract.go:154

• EvmFunctionConfig.Access is tagged omitempty (implying it’s optional), but extractFunctions currently treats an empty access value as an error (falls into the default case). This is a breaking behavior change for configs that omit access. Consider treating "" the same as public (as the previous implementation did), or remove omitempty / document it as required.

			switch funcCfg.Access {
			case accessOwner:
				fi.AccessControl = accessOwner
			case accessPublic:
			default:
				return fmt.Errorf("unknown access control '%s' for function %s (use 'owner' or 'public')",
					funcCfg.Access, funcCfg.Name)
			}

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[graham-chainlink]

Some of the copliot comments may be worth looking into.

Also we can also update the readme to include gobindings_package or we can do it at the end as well

[graham-chainlink]

we cant get rid of abi_file field yet right?

[RayXpub]

Not yet, I'll remove it in next PR to source it directly from the bindings.

[Copilot]

Pull request overview

Copilot reviewed 19 out of 20 changed files in this pull request and generated 9 comments.

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[Copilot]

Pull request overview

Copilot reviewed 19 out of 20 changed files in this pull request and generated 2 comments.

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[cl-sonarqube-production]

Quality Gate failed

Failed conditions
8.7% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube