common array: revise code.

maintain code with an optimial size.

src/lib/sw_engine/tvgSwMath.cpp

@@ -467,7 +467,7 @@ bool mathUpdateOutlineBBox(const SwOutline* outline, const SwBBox& clipRegion, S
 
     auto pt = outline->pts.data;
 
-    if (outline->pts.count == 0 || outline->cntrs.count <= 0) {
+    if (outline->pts.empty() || outline->cntrs.empty()) {
         renderRegion.reset();
         return false;
     }

src/lib/sw_engine/tvgSwShape.cpp

@@ -63,7 +63,7 @@ static void _lineSplitAt(const Line& cur, float at, Line& left, Line& right)
 
 static void _outlineEnd(SwOutline& outline)
 {
-    if (outline.pts.count == 0) return;
+    if (outline.pts.empty()) return;
     outline.cntrs.push(outline.pts.count - 1);
 }
 

src/lib/tvgArray.h

@@ -39,15 +39,15 @@ struct Array
 
     Array(const Array& rhs)
     {
-        reserve(rhs.reserved);
-        count = rhs.count;
-        memcpy(data, rhs.data, sizeof(T) * count);
+        reset();
+        *this = rhs;
     }
 
     void push(T element)
     {
         if (count + 1 > reserved) {
-            if (!reserve(count + (count >> 1) + 1)) return;
+            reserved = count + (count + 2) / 2;
+            data = static_cast<T*>(realloc(data, sizeof(T) * reserved));
         }
         data[count++] = element;
     }
@@ -63,12 +63,7 @@ struct Array
     {
         if (size > reserved) {
             reserved = size;
-            auto p = data;
             data = static_cast<T*>(realloc(data, sizeof(T) * reserved));
-            if (!data) {
-                data = p;
-                return false;
-            }
         }
         return true;
     }
@@ -100,10 +95,8 @@ struct Array
 
     void reset()
     {
-        if (data) {
-            free(data);
-            data = nullptr;
-        }
+        free(data);
+        data = nullptr;
         count = reserved = 0;
     }
 
@@ -112,6 +105,11 @@ struct Array
         count = 0;
     }
 
+    bool empty() const
+    {
+        return count == 0;
+    }
+
     void operator=(const Array& rhs)
     {
         reserve(rhs.count);

src/loaders/svg/tvgSvgLoader.cpp

@@ -2671,7 +2671,7 @@ static void _inheritGradient(SvgLoaderData* loader, SvgStyleGradient* to, SvgSty
         }
     }
 
-    if (to->stops.count == 0) _cloneGradStops(to->stops, from->stops);
+    if (to->stops.empty()) _cloneGradStops(to->stops, from->stops);
 }