Cpp Naming Check

C++ Naming Convention Checker

Verify names follow Google C++ Style Guide conventions.

Naming Rules Quick Check

| Entity | Convention | Pattern | Examples |

|--------|------------|---------|----------|

| Files | lowercase + _ or - | snake_case.cc | my_class.cc, http-parser.h |

| Classes | PascalCase | [A-Z][a-zA-Z0-9]* | MyClass, UrlParser |

| Structs | PascalCase | [A-Z][a-zA-Z0-9]* | Point, HttpRequest |

| Type aliases | PascalCase | [A-Z][a-zA-Z0-9]* | DataMap, StringList |

| Enums | PascalCase | [A-Z][a-zA-Z0-9]* | ErrorCode, State |

| Enumerators | kPascalCase | k[A-Z][a-zA-Z0-9]* | kOk, kNotFound |

| Functions | PascalCase | [A-Z][a-zA-Z0-9]* | ProcessData(), GetValue() |

| Accessors | snake_case | [a-z][a-z0-9_]* | count(), set_count() |

| Variables | snake_case | [a-z][a-z0-9_]* | table_name, num_items |

| Class members | snake_case_ | [a-z][a-z0-9_]*_ | value_, data_map_ |

| Struct members | snake_case | [a-z][a-z0-9_]* | width, height |

| Constants | kPascalCase | k[A-Z][a-zA-Z0-9]* | kMaxSize, kPi |

| Macros | UPPER_CASE | [A-Z][A-Z0-9_]* | MY_MACRO, DEBUG_LOG |

| Namespaces | snake_case | [a-z][a-z0-9_]* | my_project, internal |

| Template params | Varies | Type=T, value=n | T, InputIterator, N |

Common Mistakes

❌ Wrong → ✅ Correct

// Classes
class myClass;        → class MyClass;
class HTTPParser;     → class HttpParser;  // Treat acronyms as words

// Variables
int TableName;        → int table_name;
int tablename;        → int table_name;    // Use underscores

// Class members
int value;            → int value_;        // Trailing underscore
int m_value;          → int value_;        // No Hungarian notation

// Functions
void process_data();  → void ProcessData();
void getValue();      → void GetValue();   // Or get_value() if accessor

// Constants
const int MAX_SIZE;   → const int kMaxSize;
const int maxSize;    → const int kMaxSize;

// Enumerators
enum { ERROR_OK };    → enum { kErrorOk };
enum { Ok };          → enum { kOk };

// Macros (must be UPPER_CASE with prefix)
#define DEBUG         → #define MYPROJECT_DEBUG

Abbreviations

• OK: Listed in Wikipedia or universally known (i, n, id, url)
• Capitalize as word: StartRpc() not StartRPC()
• Don't delete letters: customer not cstmr

Check Process

• Identify the entity type (class, function, variable, etc.)
• Apply the corresponding naming rule
• Check for consistency with surrounding code
• Flag any Hungarian notation or other outdated styles