refactor(core,eth,internal): switch EVM tx context in ApplyMessage #30809

[gzliudan]

Proposed changes

Move EVM tx context switching into ApplyMessage and remove the redundant caller-side setup.

Keep the execution gas price visible to tracers in XDPoS, because TransactionToMessage can rewrite msg.GasPrice for TRC21 and fixed-price fee paths before execution.

Seed the tx context before OnTxStart and restore VMContext.GasPrice so tracers observe the execution-time pricing instead of the raw transaction price. Update tracer tests to cover the execution gas price path.

Ref: ethereum#30809

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• fix: A bug fix
• perf: A code change that improves performance
• refactor: A code change that neither fixes a bug nor adds a feature
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• test: Adding missing tests or correcting existing tests

Impacted Components

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• Consensus
• Account
• Network
• Geth
• Smart Contract
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Checklist

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• This PR has sufficient test coverage (unit/integration test) OR I have provided reason in the PR description for not having test coverage
• Tested on a private network from the genesis block and monitored the chain operating correctly for multiple epochs.
• Provide an end-to-end test plan in the PR description on how to manually test it on the devnet/testnet.
• Tested the backwards compatibility.
• Tested with XDC nodes running this version co-exist with those running the previous version.
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[Copilot]

Pull request overview

This PR refactors EVM transaction-context handling by moving evm.SetTxContext(core.NewEVMTxContext(msg)) into core.ApplyMessage, removing redundant caller-side setup across RPC/simulation/test paths. It also updates tracer plumbing/tests so tracers can observe execution-time gas price (which may differ from raw tx price in XDPoS due to TRC21/fixed-price fee handling).

Changes:

• Centralize EVM tx-context seeding inside core.ApplyMessage and refactor state transition internals accordingly.
• Remove caller-side SetTxContext in multiple call sites; switch one simulated backend path from direct transition execution to ApplyMessage.
• Extend tracer VM context and update JS tracer/tests to read gas price from execution context.

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
core/state_transition.go	ApplyMessage now seeds tx context; state transition refactored to unexported internals.
core/state_processor.go	Ensures tx context is set before OnTxStart hooks (XDPoS execution pricing visibility).
core/tracing/hooks.go	Extends VMContext with BaseFee and clarifies GasPrice semantics for XDPoS tracers.
core/vm/evm.go	Populates BaseFee and GasPrice into tracer VMContext.
eth/tracers/js/goja.go	JS tracer reads execution-time gas price from VMContext.
eth/tracers/js/tracer_test.go	Adjusts harness and adds coverage for execution-time gas price on OnTxStart.
eth/tracers/api.go	Removes redundant tx-context setup before ApplyMessage calls.
eth/tracers/api_test.go	Drops redundant tx-context setup in test backend transaction replay.
eth/tracers/tracers_test.go	Benchmark path updated to use ApplyMessage and per-iteration tx context.
eth/tracers/internal/tracetest/calltrace_test.go	Updates tracer bench/tests to align with new ApplyMessage behavior.
internal/ethapi/api.go	Removes redundant SetTxContext before applyMessageWithEVM.
internal/ethapi/simulate.go	Removes redundant SetTxContext in simulated block processing.
eth/gasestimator/gasestimator.go	Drops redundant tx-context creation; uses ApplyMessage seeding.
eth/state_accessor.go	Removes redundant tx-context setup during historical tx replay.
ethclient/simulated/backend.go	Switches from manual state transition execution to core.ApplyMessage.
core/state_prefetcher.go	Uses ApplyMessage directly for prefetch, removes helper.
core/token_validator.go	Updates call path to new state transition internals.
tests/state_test_util.go	Drops redundant tx-context setup; relies on ApplyMessage.

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[Copilot]

Pull request overview

Copilot reviewed 18 out of 18 changed files in this pull request and generated 1 comment.

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[Copilot]

Pull request overview

Copilot reviewed 19 out of 19 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (1)

core/state_transition.go:239

• The exported StateTransition/NewStateTransition API appears to have been removed/hidden by renaming to stateTransition/newStateTransition. If external packages import core and rely on these symbols, this is a breaking change; consider keeping exported wrappers (possibly deprecated) or otherwise ensuring downstream users are migrated as part of the same release.

type stateTransition struct {
	gp           *GasPool
	msg          *Message
	gasRemaining uint64
	initialGas   uint64

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[Copilot]

Pull request overview

Copilot reviewed 19 out of 19 changed files in this pull request and generated 1 comment.

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