DFGAdjacencyList.h [plain text]
#ifndef DFGAdjacencyList_h
#define DFGAdjacencyList_h
#include <wtf/Platform.h>
#if ENABLE(DFG_JIT)
#include "DFGCommon.h"
#include "DFGEdge.h"
namespace JSC { namespace DFG {
class AdjacencyList {
public:
enum Kind {
Fixed,
Variable
};
AdjacencyList(Kind kind)
#if !ASSERT_DISABLED
: m_kind(kind)
#endif
{
if (kind == Variable) {
m_words[0].m_encodedWord = UINT_MAX;
m_words[1].m_encodedWord = UINT_MAX;
}
}
AdjacencyList(Kind kind, NodeIndex child1, NodeIndex child2, NodeIndex child3)
#if !ASSERT_DISABLED
: m_kind(Fixed)
#endif
{
ASSERT_UNUSED(kind, kind == Fixed);
initialize(child1, child2, child3);
}
AdjacencyList(Kind kind, unsigned firstChild, unsigned numChildren)
#if !ASSERT_DISABLED
: m_kind(Variable)
#endif
{
ASSERT_UNUSED(kind, kind == Variable);
setFirstChild(firstChild);
setNumChildren(numChildren);
}
const Edge& child(unsigned i) const
{
ASSERT(i < 3);
ASSERT(m_kind == Fixed);
return m_words[i];
}
Edge& child(unsigned i)
{
ASSERT(i < 3);
ASSERT(m_kind == Fixed);
return m_words[i];
}
void setChild(unsigned i, Edge nodeUse)
{
ASSERT(i < 30);
ASSERT(m_kind == Fixed);
m_words[i] = nodeUse;
}
Edge child1() const { return child(0); }
Edge child2() const { return child(1); }
Edge child3() const { return child(2); }
Edge& child1() { return child(0); }
Edge& child2() { return child(1); }
Edge& child3() { return child(2); }
void setChild1(Edge nodeUse) { setChild(0, nodeUse); }
void setChild2(Edge nodeUse) { setChild(1, nodeUse); }
void setChild3(Edge nodeUse) { setChild(2, nodeUse); }
Edge child1Unchecked() const { return m_words[0]; }
void initialize(Edge child1, Edge child2, Edge child3)
{
child(0) = child1;
child(1) = child2;
child(2) = child3;
}
void initialize(NodeIndex child1, NodeIndex child2, NodeIndex child3)
{
initialize(Edge(child1), Edge(child2), Edge(child3));
}
unsigned firstChild() const
{
ASSERT(m_kind == Variable);
return m_words[0].m_encodedWord;
}
void setFirstChild(unsigned firstChild)
{
ASSERT(m_kind == Variable);
m_words[0].m_encodedWord = firstChild;
}
unsigned numChildren() const
{
ASSERT(m_kind == Variable);
return m_words[1].m_encodedWord;
}
void setNumChildren(unsigned numChildren)
{
ASSERT(m_kind == Variable);
m_words[1].m_encodedWord = numChildren;
}
private:
Edge m_words[3];
#if !ASSERT_DISABLED
Kind m_kind;
#endif
};
} }
#endif // ENABLE(DFG_JIT)
#endif // DFGAdjacencyList_h