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Diffstat (limited to 'Source/Utility/simple_vector.h')
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+//-----------------------------------------------------------------------------
+// Name: simple_vector.h
+// Developer: Wolfire Games LLC
+// Description:
+// License: Read below
+//-----------------------------------------------------------------------------
+//
+// Copyright 2022 Wolfire Games LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//-----------------------------------------------------------------------------
+#include <Internal/integer.h>
+#include <Utility/assert.h>
+#include <Memory/allocation.h>
+
+#include <algorithm>
+#include <vector>
+
+/*
+ * Very simple vector construct that doesn't call constructors or destructors on the memory allocated.
+ */
+
+static bool SortDescending( int a, int b ) { return a > b; }
+
+template<typename T>
+class SimpleVector {
+private:
+ T* v;
+ uint32_t v_count;
+ uint32_t v_size;
+ uint32_t step;
+
+public:
+ SimpleVector( uint32_t initial_size, uint32_t resize_step ) : v(NULL), v_count(0), v_size(0), step(resize_step)
+ {
+ v = static_cast<T*>(realloc(v,initial_size*sizeof(T)));
+ }
+
+ ~SimpleVector( )
+ {
+ OG_FREE(v);
+ v = NULL;
+ v_count = 0;
+ v_size = 0;
+ }
+
+ uint32_t Allocate()
+ {
+ if(v_count >= v_size)
+ {
+ v_size += step;
+ v = static_cast<T*>(realloc(v,v_size*sizeof(T)));
+ }
+
+ return v_count++;
+ }
+
+ void Deallocate( uint32_t index )
+ {
+ for( unsigned int i = index+1; i < v_count; i++ )
+ {
+ v[i-1] = v[i];
+ }
+ }
+
+ void Deallocate( std::vector<uint32_t> indexes )
+ {
+ std::sort(indexes.begin(), indexes.end(), SortDescending);
+
+ for( unsigned int i = 0; i < indexes.size(); i++ ) {
+ Deallocate(indexes[i]);
+ if( i > 0 ) {
+ LOG_ASSERT(indexes[i] < indexes[i-1]);
+ }
+ }
+
+ }
+
+ size_t Count()
+ {
+ return v_count;
+ }
+
+ T& operator[](uint32_t index)
+ {
+ return v[index];
+ }
+};