Fast Refactoring with MorphLLM
MorphLLM edit_file provides semantic code merging at 10,500+ tokens/sec with 98% accuracy.
When to Use edit_file
| Use edit_file | Use Built-in Edit/MultiEdit | | ------------------------------- | -------------------------------- | | Multi-file batch refactoring | Single file, clear edit | | Style/pattern update everywhere | 2-3 targeted replacements | | Complex prompt → many changes | Need clear diff to review/tune | | Structural refactoring at scale | Simple rename (replace_all) | | 5+ files need same pattern | Straightforward single-file work |
Key Features
- Semantic merge: Understands code structure, not just text
- Speed: 10,500 tok/s vs 180 tok/s streaming
- Accuracy: 98% success rate on edge cases
- dryRun: Preview changes before applying
Workflow
Standard Refactoring
1. Use WarpGrep to find all locations needing change
2. For each file: call edit_file with changes
3. Verify with lint/test
High-Stakes Changes (dryRun)
1. Call edit_file with dryRun: true
2. Review preview output
3. If approved, call again with dryRun: false
Parameters
path: "/absolute/path/to/file"
code_edit: "changed lines with // ... existing code ... markers"
instruction: "brief description of changes"
dryRun: false (set true to preview)
Edit Format
Use // ... existing code ... markers for unchanged sections:
// ... existing code ...
function updatedFunction() {
// new implementation
}
// ... existing code ...
Common Patterns
Batch Error Handling
instruction: "Add error wrapping to all repository methods"
code_edit: Shows only changed functions with context markers
Import Updates
instruction: "Update imports from old-pkg to new-pkg"
code_edit: Shows import section with changes
Multi-Location Rename
instruction: "Rename getUserById to findUser throughout file"
code_edit: Shows all locations with changes
Tips
- Batch all edits to same file in one call
- Include enough context to locate changes precisely
- Preserve exact indentation in code_edit
- Use WarpGrep first to understand scope
- Run tests after each file to catch issues early