iOS Naming Conventions Checker

Validate Swift code naming against Payoo Merchant project standards for clarity and consistency.

When to Activate

• "check naming", "naming conventions", "code readability"
• "abbreviations", "variable names", "rename"
• Reviewing code quality or consistency
• Onboarding new developers

Naming Rules Summary

Types (Classes, Structs, Enums, Protocols)

• PascalCase: PaymentViewModel, TransactionRepository
• Descriptive: Purpose immediately clear
• Proper suffixes: ViewModel, ViewController, UseCase, Repository

Variables & Properties

• camelCase: paymentAmount, isProcessing
• Meaningful: No abbreviations (except URL, ID, VC, UC)
• Booleans: Prefix is, has, should, can
• Collections: Plural names (transactions, stores)

Functions & Methods

• camelCase with verb prefix
• Actions: loadTransactions(), processPayment()
• Queries: getTransaction(), hasPermission()

IBOutlets

• Type suffix: amountTextField, confirmButton, tableView

Review Process

Step 1: Scan Code

Read files and identify all declarations:

• Class/struct/enum/protocol declarations
• Variable and property declarations
• Function declarations
• IBOutlet declarations

Step 2: Check Against Rules

For each identifier, verify:

Classes/Types:

• ✅ PascalCase
• ✅ Descriptive (not generic like "Manager")
• ✅ No abbreviations (except standard ones)
• ✅ Proper suffix (ViewModel, UseCase, etc.)

Variables:

• ✅ camelCase
• ✅ Meaningful names
• ✅ Boolean prefixes (is/has/should/can)
• ✅ Plural for collections
• ✅ No single letters (except loop indices)

Functions:

• ✅ Verb-based names
• ✅ Clear action or query intent
• ✅ No generic names (doSomething, handle)

IBOutlets:

• ✅ Type suffix included

Step 3: Generate Report

# Naming Conventions Review

## Summary
- 🔴 Critical (meaningless): X
- 🟠 High (abbreviations): X
- 🟡 Medium (missing prefixes): X
- 🟢 Low (style): X

## Issues by Type

### Classes/Structs/Enums
**File**: `path/to/file.swift:line`
Current: `PayVC`
Should be: `PaymentViewController`
Reason: [Explanation]

### Variables/Properties
[List with specific fixes]

### Functions
[List with specific fixes]

### IBOutlets
[List with specific fixes]

## Batch Rename Suggestions
Found `amt` in 5 locations → Rename all to `paymentAmount`

## Good Examples Found ✅
[Acknowledge well-named elements]

Common Violations

❌ Abbreviations

class PayVC { }        → PaymentViewController
let amt: Double        → paymentAmount
func procPmt() { }     → processPayment()

❌ Single Letters

let x = transaction    → currentTransaction
let a = amount         → paymentAmount

❌ Generic/Meaningless

class Manager { }      → PaymentManager
func doSomething() { } → processRefundRequest()
func handle() { }      → handlePaymentError()

❌ Missing Prefixes

let loading: Bool      → isLoading: Bool
let valid: Bool        → isValid: Bool

❌ Missing Type Suffix

@IBOutlet weak var amount: UITextField!  → amountTextField
@IBOutlet weak var btn: UIButton!       → confirmButton

Search Patterns

Use Grep to find:

• Abbreviations: (let|var)\s+[a-z]{1,3}\s*[=:]
• IBOutlets: @IBOutlet.*weak var
• Booleans: (let|var)\s+[a-z]+.*:\s*Bool

Output Guidelines

For each violation:

1. File path and line number
2. Current name
3. Recommended name
4. Reason for change
5. Impact on code clarity

Prioritize:

• Critical: Meaningless names (hurts maintainability)
• High: Abbreviations (reduces clarity)
• Medium: Missing prefixes/suffixes
• Low: Style inconsistencies

Quick Fixes

1. Expand Abbreviation: Use Xcode refactor tool
2. Add Boolean Prefix: Rename with is/has/should/can
3. Add Type Suffix: Update IBOutlet names

Common Abbreviations to Fix

❌ Bad	✅ Good
amt	paymentAmount
trx, tx	transaction
btn	button
lbl	label
vc	viewController
uc	useCase
repo	repository

Reference

Detailed Examples: See examples.md for extensive naming patterns and scenarios.