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@thedavidmeister thedavidmeister commented Dec 1, 2025

Motivation

Solution

Checks

By submitting this for review, I'm confirming I've done the following:

  • made this PR as small as possible
  • unit-tested any new functionality
  • linked any relevant issues or PRs
  • included screenshots (if this involves a front-end change)

Summary by CodeRabbit

  • Chores
    • Updated EVM target to Cancun.
    • Updated several library dependencies to newer revisions (interpreter interface, memkv, metadata, string utils, binmaskflag).
  • Tests
    • Adjusted test expectations to use signed integer string formatting where applicable.

✏️ Tip: You can customize this high-level summary in your review settings.

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coderabbitai bot commented Dec 1, 2025

Walkthrough

Changed the EVM version in foundry.toml from "paris" to "cancun", advanced several library submodule commit pointers, and updated test expectations to use signed integer string formatting; no other source or config edits.

Changes

Cohort / File(s) Summary
Configuration
foundry.toml
EVM version changed from "paris" to "cancun".
Submodule updates — rain libs
lib/rain.interpreter.interface, lib/rain.lib.memkv, lib/rain.metadata, lib/rain.string
Advanced submodule commit pointers for each library; diffs show only updated submodule references, no visible source/config changes.
Submodule update — solidity util
lib/sol.lib.binmaskflag
Advanced submodule commit pointer; no functional changes in this diff.
Tests
test/src/lib/parse/LibParseOperand.parseOperand.t.sol
Replaced value.toString() with value.toStringSigned() in multiple test expectations (changes how signed integers are rendered in expected strings).

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

  • Areas to inspect:
    • Confirm submodule target commits for lib/rain.interpreter.interface and compatibility with the current codebase.
    • Ensure the EVM version bump to cancun is intentional and compatible with CI/tooling.
    • Verify test expectation changes (signed formatting) are correct and sufficient.

Possibly related PRs

  • 2025 10 19 deps #416 — Advances the same set of lib submodule pointers; likely the same update series.
  • paris evm #321 — Modifies the foundry.toml EVM version setting (related configuration change).
  • bump int #319 — Updates the lib/rain.interpreter.interface submodule pointer (related submodule bump).

Suggested reviewers

  • hardyjosh
  • findolor

Pre-merge checks and finishing touches

❌ Failed checks (1 inconclusive)
Check name Status Explanation Resolution
Title check ❓ Inconclusive The title 'interface update' is vague and generic, failing to convey the actual scope of changes which include EVM version upgrade, multiple submodule updates, and test modifications. Clarify the title to accurately reflect the main changes, such as 'Upgrade EVM version to cancun and update dependencies' or 'Update submodules and EVM configuration'.
✅ Passed checks (2 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage ✅ Passed No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
✨ Finishing touches
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Post copyable unit tests in a comment
  • Commit unit tests in branch 2025-12-01-deps

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Actionable comments posted: 1

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)
foundry.toml (1)

1-46: Explain the rationale for re-introducing Cancun EVM support in PR description.

This repository previously rolled back Cancun support in August 2024 (commit 1fee36f, PR #279 "nocancun"). The current PR appears to reintroduce evm_version = "cancun" as part of the dependency update. This reversal warrants clear documentation: explain what changed in the codebase or dependencies that now makes Cancun safe or necessary. Include any specific features or compatibility requirements that justify this decision.

📜 Review details

Configuration used: CodeRabbit UI

Review profile: ASSERTIVE

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between d1fee1b and 1fddbc7.

⛔ Files ignored due to path filters (1)
  • foundry.lock is excluded by !**/*.lock
📒 Files selected for processing (2)
  • foundry.toml (1 hunks)
  • lib/rain.interpreter.interface (1 hunks)
🧰 Additional context used
🧠 Learnings (1)
📚 Learning: 2025-07-15T11:31:28.010Z
Learnt from: thedavidmeister
Repo: rainlanguage/rain.interpreter PR: 360
File: src/lib/op/erc20/LibOpERC20Allowance.sol:0-0
Timestamp: 2025-07-15T11:31:28.010Z
Learning: In the rainlanguage/rain.interpreter project, forge (Foundry's formatting tool) handles code formatting automatically, so formatting-related suggestions are not actionable.

Applied to files:

  • lib/rain.interpreter.interface
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (8)
  • GitHub Check: rainix (ubuntu-latest, rainix-rs-static)
  • GitHub Check: rainix (ubuntu-latest, rainix-sol-static)
  • GitHub Check: rainix (ubuntu-latest, rainix-sol-artifacts)
  • GitHub Check: rainix (ubuntu-latest, rainix-sol-test)
  • GitHub Check: rainix (ubuntu-latest, test-wasm-build)
  • GitHub Check: rainix (ubuntu-latest, rainix-rs-test)
  • GitHub Check: rainix (ubuntu-latest, rainix-rs-artifacts)
  • GitHub Check: git-clean
🔇 Additional comments (2)
lib/rain.interpreter.interface (2)

1-1: Provide PR context and motivation for the submodule bump.

The PR description is empty—it only contains an unfilled template. Before merging, clarify:

  • What functionality or fixes does the new submodule commit introduce?
  • Why is the Foundry EVM version being bumped from "paris" to "cancun"?
  • Are there any breaking changes or compatibility considerations?

1-1: Verify submodule commit and validate Cancun EVM compatibility.

This PR updates rain.interpreter.interface (3c834ad → 2d06b79) and upgrades the EVM version from Paris to Cancun in foundry.toml. Cancun introduces new opcodes (MCOPY) and modifies gas costs, requiring explicit validation:

  • Confirm the new submodule commit (2d06b797698d3ed2555e93162176479127a02b1a) has been reviewed
  • Verify unit tests pass against Cancun EVM configuration (comprehensive test suite exists in .gas-snapshot but re-validation is needed)
  • Confirm CI workflows (rainix-sol-test, rainix-rs-test) have completed successfully on this branch

Please share CI logs or test results confirming both the submodule integration and Cancun compatibility.


solc = "0.8.25"
evm_version = "paris"
evm_version = "cancun"
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⚠️ Potential issue | 🟠 Major

🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
# Examine foundry.toml and verify the EVM version change details

echo "=== Current foundry.toml (full file) ==="
cat foundry.toml

echo ""
echo "=== Check for git history of foundry.toml ==="
git log --oneline -n 10 -- foundry.toml 2>/dev/null || echo "Git history not available"

echo ""
echo "=== Check for test files ==="
find . -name "*.t.sol" -o -name "*test*" -type f | head -20

echo ""
echo "=== Check for lib/rain.interpreter.interface references ==="
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Repository: rainlanguage/rain.interpreter

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echo "=== Project structure (top-level) ==="
ls -la | grep -E "^d|\.toml|\.md"

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find . -maxdepth 2 -name "*.sol" -type f 2>/dev/null | head -20

echo ""
echo "=== Solidity files count by directory ==="
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git diff HEAD~1 foundry.toml 2>/dev/null || git show HEAD:foundry.toml 2>/dev/null | head -20

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echo ""
echo "=== Current branch info ==="
git branch -a
git status

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echo ""
echo "=== Look for any recent changes in README or similar ==="
cat README.md | head -50

echo ""
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find . -maxdepth 1 -type f \( -name "CHANGELOG*" -o -name "HISTORY*" -o -name "CHANGES*" \) 2>/dev/null | xargs cat 2>/dev/null || echo "No changelog found"

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Clarify motivation and provide evidence that Cancun EVM upgrade has been tested.

Upgrading from Paris to Cancun EVM is a significant change affecting new opcodes, gas costs, and bytecode generation. The PR description lacks motivation for this change, and there's no evidence in the PR that the configuration has been validated with the existing test suite.

Before merging:

  1. Update the PR description explaining why the EVM version is being upgraded and any alignment needed with the submodule update to lib/rain.interpreter.interface
  2. Confirm that all tests pass with the Cancun configuration and document the results in the PR
  3. If this change affects deployment, verify contract bytecode and deployment behavior remain as expected
🤖 Prompt for AI Agents
In foundry.toml around line 9, the EVM version was changed to "cancun" without
justification or test evidence; update the PR by (1) adding a clear motivation
in the PR description explaining why Cancun is required and how it aligns with
the lib/rain.interpreter.interface submodule update, (2) running the full test
suite with foundry configured to use Cancun, documenting and attaching test
results (pass/fail, any flaky tests, CI logs) to the PR, and (3) verifying
contract bytecode and deployment by comparing compiled artifacts and a test
deploy (or dry-run) against the Paris baseline and noting any differences or
required migration steps in the PR description.

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Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI

Review profile: ASSERTIVE

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 0885338 and f4a2288.

⛔ Files ignored due to path filters (1)
  • foundry.lock is excluded by !**/*.lock
📒 Files selected for processing (1)
  • lib/rain.metadata (1 hunks)
🧰 Additional context used
🧠 Learnings (1)
📓 Common learnings
Learnt from: thedavidmeister
Repo: rainlanguage/rain.interpreter PR: 360
File: src/lib/op/erc20/LibOpERC20Allowance.sol:0-0
Timestamp: 2025-07-15T11:31:28.010Z
Learning: In the rainlanguage/rain.interpreter project, forge (Foundry's formatting tool) handles code formatting automatically, so formatting-related suggestions are not actionable.
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (10)
  • GitHub Check: git-clean
  • GitHub Check: rainix (ubuntu-latest, rainix-sol-static)
  • GitHub Check: rainix (ubuntu-latest, test-wasm-build)
  • GitHub Check: rainix (macos-latest, rainix-rs-artifacts)
  • GitHub Check: rainix (ubuntu-latest, rainix-rs-static)
  • GitHub Check: rainix (macos-latest, rainix-rs-test)
  • GitHub Check: rainix (ubuntu-latest, rainix-sol-artifacts)
  • GitHub Check: rainix (ubuntu-latest, rainix-sol-test)
  • GitHub Check: rainix (ubuntu-latest, rainix-rs-test)
  • GitHub Check: rainix (ubuntu-latest, rainix-rs-artifacts)
🔇 Additional comments (1)
lib/rain.metadata (1)

1-1: Document the PR motivation and rationale.

The PR description is incomplete—the Motivation and Solution sections are empty, and all pre-merge checks remain unchecked. This blocks proper review and understanding of the architectural or compatibility intent.

Please update the PR description to include:

  1. Motivation: Why are the EVM version and these three submodules being updated now?
  2. Solution: What do these updates achieve or fix?
  3. Compatibility notes: Any breaking changes, migration steps, or version constraints?

@@ -1 +1 @@
Subproject commit 0fc7d0f21e28ab5360b23ba45a298d56313c5ab5
Subproject commit ce6a8fc92676cbd7eeb0019a22026e10fcd4273d
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⚠️ Potential issue | 🟠 Major

❓ Verification inconclusive

🏁 Script executed:

# Check .gitmodules to verify rain.metadata is a declared submodule
if [ -f .gitmodules ]; then
  echo "=== .gitmodules content ==="
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fi

# List git submodules
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git config --file .gitmodules --name-only --get-regexp path | head -20

# Check if lib/rain.metadata exists and its status
echo -e "\n=== lib/rain.metadata status ==="
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Repository: rainlanguage/rain.interpreter

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echo -e "\n=== Check all branches ==="
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git show ce6a8fc92676cbd7eeb0019a22026e10fcd4273d --no-patch --format="%H %s" 2>&1 || echo "Commit not found in current branch"

Repository: rainlanguage/rain.interpreter

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echo "=== Show foundry.toml change ==="
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Repository: rainlanguage/rain.interpreter

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Coordinated infrastructure changes require complete documentation and compatibility verification before merge.

This PR updates the EVM version from paris to cancun alongside three submodule pointer updates (lib/rain.metadata, lib/rain.interpreter.interface, lib/rain.lib.memkv), but provides only a generic commit message ("update metadata") with no explanation of motivation, breaking changes, or compatibility considerations.

Before merging, ensure:

  1. The PR description is completed with rationale for the EVM version upgrade and how it relates to the submodule updates.
  2. All three submodule updates are verified to be compatible with the cancun EVM version and with each other.
  3. Any breaking changes, state migrations, or interface modifications are documented and tested.
  4. Changelog or release notes are updated to reflect these coordinated changes.
🤖 Prompt for AI Agents
In lib/rain.metadata around lines 1-1, the commit updates EVM from `paris` to
`cancun` and advances three submodule pointers but provides no rationale,
compatibility verification, or documentation; update the PR description with a
clear rationale for the EVM bump and why each submodule pointer was advanced,
run and report compatibility tests (unit/integration and any CI EVM matrix)
proving lib/rain.interpreter.interface and lib/rain.lib.memkv work with `cancun`
and with each other, list any breaking changes or interface/state-migration
steps and add automated tests covering them, and update changelog/release notes
with these coordinated infrastructure changes before merging.

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Actionable comments posted: 2

📜 Review details

Configuration used: CodeRabbit UI

Review profile: ASSERTIVE

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between f4a2288 and 727a995.

⛔ Files ignored due to path filters (1)
  • foundry.lock is excluded by !**/*.lock
📒 Files selected for processing (1)
  • lib/rain.string (1 hunks)

@@ -1 +1 @@
Subproject commit 85d0074c8cd1fdca3285366c15bc9b44b84ad5e9
Subproject commit 0b1ca08aed6d9c06b83fe127a7d20ee7002ead28
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⚠️ Potential issue | 🟠 Major

Complete the PR checklist and provide context in the PR description.

The PR body is an empty template, yet the checklist items—unit testing, issue linking, and verification that the PR is minimal—are all unchecked. For a multi-submodule + EVM version bump change, thorough documentation is essential.

Required before merge:

  • Fill in the Motivation and Solution sections explaining why these specific versions are being pinned
  • Check off each checklist item or explain why it doesn't apply
  • Link to any related issues or breaking-change discussions
  • Confirm the EVM version change (Paris → Cancun) is intentional and tested
🤖 Prompt for AI Agents
In lib/rain.string around lines 1 to 1, the PR body is an empty template and the
checklist items are unchecked; before merging, update the PR description to
include a filled Motivation and Solution explaining why these specific versions
are pinned, mark each checklist item as completed or justify why it doesn't
apply (unit tests, issue linkage, minimality), add links to any related issues
or breaking-change discussions, and explicitly confirm that the EVM version
change (Paris → Cancun) is intentional and include a short summary of the tests
performed to validate it.

⚠️ Potential issue | 🟠 Major

🧩 Analysis chain

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Repository: rainlanguage/rain.interpreter

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Verify compatibility of coordinated submodule updates and complete PR documentation.

This PR updates four submodules (lib/rain.string, lib/rain.interpreter.interface, lib/rain.lib.memkv, lib/rain.metadata) alongside an EVM version bump in foundry.toml (Paris → Cancun). These coordinated changes require comprehensive testing and clear documentation.

Required actions:

  1. Confirm the full test suite passes with all changes applied together
  2. Verify the EVM version upgrade is compatible with all updated library versions
  3. Document the reason for these updates and any breaking changes in the PR description
  4. Complete the PR checklist (unit tests, issue linking, etc.)
🤖 Prompt for AI Agents
In lib/rain.string around lines 1 to 1: the review requests verification and
documentation for coordinated updates (four submodules plus EVM bump). Run the
full test suite with all submodule changes applied together and fix any failing
tests; confirm the `foundry.toml` EVM upgrade (Paris→Cancun) is compatible with
the updated library versions (update code or pin versions if incompatibilities
appear); update the PR description to explain why each submodule was updated and
note any breaking changes; and complete the PR checklist (add/verify unit tests,
link related issues, and confirm CI/test status) before merging.

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Actionable comments posted: 1

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  • test/src/lib/parse/LibParseOperand.parseOperand.t.sol (4 hunks)
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test/src/lib/parse/LibParseOperand.parseOperand.t.sol (3)

81-81: toStringSigned use is consistent with bounded positive domain; confirm library support

Given value is fuzz-bounded to [0, type(int224).max], both the uint256(value).toHexString() and value.toStringSigned() branches are safe and behave as expected for positive values. Please just confirm that your openzeppelin-contracts Strings implementation (or fork) actually defines toStringSigned(int256), since this is not present in older standard releases and would otherwise be a compile error.


120-122: Two-literal case mirrors single-literal behaviour

The dual use of toStringSigned() for valueA and valueB is consistent with the single-literal test, and the hex/decimal branching plus bound(..., 0, type(int224).max) keep casts safe. No issues from a testing perspective.


177-181: Three-literal case remains consistent and locally scoped

The local valueAString/BString/CString construction with toStringSigned() matches the earlier patterns and keeps expectedLength in sync with the rendered operand string. Logic is sound and side‑effect free.

Comment on lines +239 to +242
string memory valueAString = asHex[0] ? uint256(values[0]).toHexString() : values[0].toStringSigned();
string memory valueBString = asHex[1] ? uint256(values[1]).toHexString() : values[1].toStringSigned();
string memory valueCString = asHex[2] ? uint256(values[2]).toHexString() : values[2].toStringSigned();
string memory valueDString = asHex[3] ? uint256(values[3]).toHexString() : values[3].toStringSigned();
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🧹 Nitpick | 🔵 Trivial

Four-literal case matches prior patterns; optional helper extraction

The four uses of toStringSigned() are consistent with the other tests, and expectedLength correctly incorporates all four string lengths plus whitespace/suffix. If this pattern grows further, consider a small helper like formatLiteral(bool asHex, int256 v) to reduce duplication across these tests, but it’s not required for correctness.

🤖 Prompt for AI Agents
In test/src/lib/parse/LibParseOperand.parseOperand.t.sol around lines 239 to
242, the four repeated expressions that choose between toHexString() and
toStringSigned() can be refactored into a small helper to reduce duplication;
create a private helper function formatLiteral(bool asHex, int256 v) that
returns the appropriate string by selecting uint256(v).toHexString() when asHex
is true or v.toStringSigned() otherwise, then replace the four inline ternaries
with calls to that helper and update any expected length calculations to use the
helper results.

@thedavidmeister thedavidmeister merged commit 018871e into main Dec 1, 2025
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github-actions bot commented Dec 1, 2025

@coderabbitai assess this PR size classification for the totality of the PR with the following criterias and report it in your comment:

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SIZE=M

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