asherkin@263: /*
asherkin@263:  * Copyright (C) 2012 David Anderson
asherkin@263:  *
asherkin@263:  * This file is part of SourcePawn.
asherkin@263:  *
asherkin@263:  * SourcePawn is free software: you can redistribute it and/or modify it under
asherkin@263:  * the terms of the GNU General Public License as published by the Free
asherkin@263:  * Software Foundation, either version 3 of the License, or (at your option)
asherkin@263:  * any later version.
asherkin@263:  * 
asherkin@263:  * SourcePawn is distributed in the hope that it will be useful, but WITHOUT ANY
asherkin@263:  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
asherkin@263:  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
asherkin@263:  *
asherkin@263:  * You should have received a copy of the GNU General Public License along with
asherkin@263:  * SourcePawn. If not, see http://www.gnu.org/licenses/.
asherkin@263:  */
asherkin@263: #include <limits.h>
asherkin@263: #include <string.h>
asherkin@263: #include "FixedArray.h"
asherkin@263: #include "Zone.h"
asherkin@263: #include "Heap-inl.h"
asherkin@263: 
asherkin@263: using namespace ke;
asherkin@263: 
asherkin@263: static const unsigned kMaxFixedArrayLength = ((INT_MAX - sizeof(FixedArray)) / sizeof(ke::Object *));
asherkin@263: 
asherkin@263: FixedArray *
asherkin@263: FixedArray::New(Zone *zone, unsigned length, Heap::Tenure tenure)
asherkin@263: {
asherkin@263:     if (length >= kMaxFixedArrayLength) {
asherkin@263:         zone->reportError(Message_ArrayTooBig);
asherkin@263:         return NULL;
asherkin@263:     }
asherkin@263: 
asherkin@263:     Local<FixedArray> array(zone, FixedArray::cast(zone->allocate(MapKind_FixedArray, SizeFor(length), tenure)));
asherkin@263:     if (!array)
asherkin@263:         return NULL;
asherkin@263: 
asherkin@263:     array->length_ = length;
asherkin@263:     memset(array->vec(), 0, length * sizeof(Object *));
asherkin@263:     return array;
asherkin@263: }
asherkin@263: 
asherkin@263: ByteArray *
asherkin@263: ByteArray::New(Zone *zone, unsigned length, Heap::Tenure tenure)
asherkin@263: {
asherkin@263:     if (length >= kMaxFixedArrayLength) {
asherkin@263:         zone->reportError(Message_ArrayTooBig);
asherkin@263:         return NULL;
asherkin@263:     }
asherkin@263: 
asherkin@263:     Local<ByteArray> array(zone, ByteArray::cast(zone->allocate(MapKind_ByteArray, SizeFor(length), tenure)));
asherkin@263:     if (!array)
asherkin@263:         return NULL;
asherkin@263: 
asherkin@263:     array->length_ = length;
asherkin@263:     memset(array->raw(), 0, length);
asherkin@263:     return array;
asherkin@263: }
asherkin@263: 
asherkin@263: ByteArray *
asherkin@263: ByteArray::New(Zone *zone, Handle<Map> map, unsigned length, Heap::Tenure tenure)
asherkin@263: {
asherkin@263:     if (length >= kMaxFixedArrayLength) {
asherkin@263:         zone->reportError(Message_ArrayTooBig);
asherkin@263:         return NULL;
asherkin@263:     }
asherkin@263: 
asherkin@263:     Local<ByteArray> array(zone, ByteArray::cast(zone->allocate(map, SizeFor(length), tenure)));
asherkin@263:     if (!array)
asherkin@263:         return NULL;
asherkin@263: 
asherkin@263:     array->length_ = length;
asherkin@263:     memset(array->raw(), 0, length);
asherkin@263:     return array;
asherkin@263: }
asherkin@263: