PkmnLib/src/ScriptResolving/AngelScript/ContextPool.hpp

#ifndef PKMNLIB_CONTEXTPOOL_HPP
#define PKMNLIB_CONTEXTPOOL_HPP

#include <angelscript.h>
#include <vector>

class ContextPool {
    std::vector<asIScriptContext*> _pool;
    asIScriptEngine* _engine;

public:
    ContextPool(asIScriptEngine* engine) : _engine(engine) {}

    ~ContextPool() {
        for (auto ctx : _pool) {
            ctx->Release();
        }
    }

    asIScriptContext* RequestContext() {
        // Get a context from the pool, or create a new
        asIScriptContext* ctx = nullptr;
        if (!_pool.empty()) {
            ctx = *_pool.rbegin();
            _pool.pop_back();
        } else
            ctx = _engine->CreateContext();
        return ctx;
    }

    void ReturnContextToPool(asIScriptContext* ctx) {
        ctx->Unprepare();
        _pool.push_back(ctx);
    }
};

#endif // PKMNLIB_CONTEXTPOOL_HPP