native-integration

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name: native-integration description: Essential skill covering C++ programming, FFI (Foreign Function Interface), ANI (Ark Native Interface), ICU4C integration for internationalization, and native method implementation for ETS stdlib. Use this skill when: (1) Implementing native methods, (2) Integrating with C++ code, (3) Using ICU for i18n, (4) Handling native/ETS boundary, (5) Debugging native crashes, or (6) Optimizing native code.

Native Integration

Quick Start

Native method declaration:

// ETS side
export class Math {
    public native static sqrt(x: double): double;
}

C++ implementation:

// C++ side
double Math_sqrt(double x) {
    return std::sqrt(x);
}

Type conversions:

// ETS string to C++
std::string str = etsToCppString(etsStr);

// C++ to ETS string
EtsString* etsStr = cppToEtsString(str);

Key Concepts

ANI (Ark Native Interface):

• StringHelper for string conversions
• ArrayHelper for array conversions
• ExceptionHelper for error handling

ICU Integration:

• Locale handling
• Number/date formatting
• Collation

Script Utilities

• check_native_integration.sh - Validate native methods