resize_impl()

void fl::vector_basic::resize_impl

(

fl::size

n

)

Resize to n elements. New elements are default-constructed (zeroed for trivial).

Definition at line 308 of file basic_vector.cpp.hpp.

                                                    {
    if (n == mSize) return;
 
    if (n < mSize) {
        // Shrink: destroy excess elements
        if (mOps) {
            mOps->destroy_n(element_ptr(n), mSize - n);
        }
        mSize = n;
        return;
    }
 
    // Grow: ensure capacity and default-construct new elements
    ensure_capacity(n);
    if (mCapacity < n) return;  // allocation failed
 
    if (mOps) {
        if (mOps->default_construct) {
            for (fl::size i = mSize; i < n; ++i) {
                mOps->default_construct(element_ptr(i));
            }
        } else {
            // Type has no default constructor — zero-fill as fallback
            trivial_default_construct(element_ptr(mSize), n - mSize);
        }
    } else {
        trivial_default_construct(element_ptr(mSize), n - mSize);
    }
    mSize = n;
}

References element_ptr(), ensure_capacity(), fl::FL_NO_EXCEPT, mCapacity, mOps, mSize, and trivial_default_construct().

Referenced by fl::vector< fl::i16 >::resize().

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