Implement regex operation for Agentflow Condition

[DEVELOPER-DEEVEN]

Summary

• add regex handler to the Agentflow Condition backend compare map so the frontend "Regex" option executes instead of throwing
• support simple /pattern/flags parsing and safely fall back to plain patterns; invalid regex input returns false instead of crashing
• guard against unknown operations before execution to avoid runtime TypeErrors

Fixes #5650.

Testing

• not run (not configured in this environment)

[gemini-code-assist]

Summary of Changes

Hello @DEVELOPER-DEEVEN, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the Agentflow Condition node by integrating regular expression capabilities, allowing for more flexible and powerful conditional logic. It introduces a new regex operator that not only performs pattern matching but also includes comprehensive error handling to ensure stability when dealing with potentially malformed regex patterns. Furthermore, the changes improve the overall resilience of the condition evaluation process by preventing crashes when an unrecognized comparison operation is encountered.

Highlights

• Regex Operation Added: A new regex comparison operation has been introduced to the Agentflow Condition backend, allowing for pattern matching within conditions.
• Robust Regex Handling: The implementation includes robust parsing for regex patterns and flags (e.g., /pattern/flags). It gracefully handles invalid regex input by returning false instead of causing a crash.
• Error Prevention for Unknown Operations: A safeguard has been added to prevent runtime TypeErrors by checking if a comparison operation exists before attempting to execute it. Unknown operations are now safely skipped.

Changelog

• packages/components/nodes/agentflow/Condition/Condition.ts
  • Added a new regex function to the compareOperationFunctions map to enable regular expression comparisons.
  • Implemented logic within the regex function to parse raw pattern strings, extract regex patterns and flags, and handle RegExp creation with a try-catch block to prevent errors from invalid patterns.
  • Introduced a null check for compareOperationFunctions[operation] before execution, ensuring that unknown operations do not lead to runtime errors.

Activity

• No specific activity (comments, reviews, or progress updates) has been recorded for this pull request yet.

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[gemini-code-assist]

Code Review

This pull request introduces a regex operation for Agentflow Conditions and adds a safeguard against unknown operations. The implementation of the regex handler is robust, correctly parsing patterns with and without flags, and includes error handling for invalid regex expressions. The addition of a check for unknown operations prevents potential runtime errors, improving the overall stability of the code. The changes are well-implemented and align with the goals stated in the pull request description.