90 lines
2.3 KiB
C++
90 lines
2.3 KiB
C++
#include "master.hpp"
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namespace factor
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{
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/* make a new array with an initial element */
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array *factor_vm::allot_array(cell capacity, cell fill_)
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{
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gc_root<object> fill(fill_,this);
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gc_root<array> new_array(allot_array_internal<array>(capacity),this);
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if(fill.value() == tag_fixnum(0))
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memset(new_array->data(),'\0',capacity * sizeof(cell));
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else
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{
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/* No need for write barrier here. Either the object is in
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the nursery, or it was allocated directly in tenured space
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and the write barrier is already hit for us in that case. */
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cell i;
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for(i = 0; i < capacity; i++)
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new_array->data()[i] = fill.value();
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}
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return new_array.untagged();
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}
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/* push a new array on the stack */
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void factor_vm::primitive_array()
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{
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cell initial = dpop();
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cell size = unbox_array_size();
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dpush(tag<array>(allot_array(size,initial)));
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}
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cell factor_vm::allot_array_1(cell obj_)
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{
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gc_root<object> obj(obj_,this);
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gc_root<array> a(allot_array_internal<array>(1),this);
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set_array_nth(a.untagged(),0,obj.value());
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return a.value();
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}
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cell factor_vm::allot_array_2(cell v1_, cell v2_)
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{
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gc_root<object> v1(v1_,this);
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gc_root<object> v2(v2_,this);
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gc_root<array> a(allot_array_internal<array>(2),this);
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set_array_nth(a.untagged(),0,v1.value());
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set_array_nth(a.untagged(),1,v2.value());
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return a.value();
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}
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cell factor_vm::allot_array_4(cell v1_, cell v2_, cell v3_, cell v4_)
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{
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gc_root<object> v1(v1_,this);
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gc_root<object> v2(v2_,this);
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gc_root<object> v3(v3_,this);
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gc_root<object> v4(v4_,this);
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gc_root<array> a(allot_array_internal<array>(4),this);
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set_array_nth(a.untagged(),0,v1.value());
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set_array_nth(a.untagged(),1,v2.value());
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set_array_nth(a.untagged(),2,v3.value());
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set_array_nth(a.untagged(),3,v4.value());
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return a.value();
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}
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void factor_vm::primitive_resize_array()
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{
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array* a = untag_check<array>(dpop());
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cell capacity = unbox_array_size();
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dpush(tag<array>(reallot_array(a,capacity)));
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}
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void growable_array::add(cell elt_)
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{
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factor_vm* parent_vm = elements.parent_vm;
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gc_root<object> elt(elt_,parent_vm);
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if(count == array_capacity(elements.untagged()))
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elements = parent_vm->reallot_array(elements.untagged(),count * 2);
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parent_vm->set_array_nth(elements.untagged(),count++,elt.value());
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}
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void growable_array::trim()
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{
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factor_vm *parent_vm = elements.parent_vm;
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elements = parent_vm->reallot_array(elements.untagged(),count);
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}
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}
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