#pragma once
#include "CodeBlockHash.h"
#include "JSCJSValue.h"
#include <wtf/PrintStream.h>
namespace JSC {
class CodeBlock;
namespace Profiler {
class Bytecodes;
class Database;
class Origin {
public:
Origin()
: m_bytecodeIndex(std::numeric_limits<unsigned>::max())
{
}
Origin(WTF::HashTableDeletedValueType)
: m_bytecodeIndex(std::numeric_limits<unsigned>::max() - 1)
{
}
Origin(Bytecodes* bytecodes, unsigned bytecodeIndex)
: m_bytecodes(bytecodes)
, m_bytecodeIndex(bytecodeIndex)
{
ASSERT(m_bytecodeIndex < std::numeric_limits<unsigned>::max() - 1);
}
Origin(Database&, CodeBlock*, unsigned bytecodeIndex);
bool operator!() const { return m_bytecodeIndex == std::numeric_limits<unsigned>::max(); }
Bytecodes* bytecodes() const { return m_bytecodes; }
unsigned bytecodeIndex() const { return m_bytecodeIndex; }
bool operator==(const Origin&) const;
bool operator!=(const Origin& other) const { return !(*this == other); }
unsigned hash() const;
bool isHashTableDeletedValue() const;
void dump(PrintStream&) const;
JSValue toJS(ExecState*) const;
private:
Bytecodes* m_bytecodes;
unsigned m_bytecodeIndex;
};
inline bool Origin::operator==(const Origin& other) const
{
return m_bytecodes == other.m_bytecodes
&& m_bytecodeIndex == other.m_bytecodeIndex;
}
inline unsigned Origin::hash() const
{
return WTF::PtrHash<Bytecodes*>::hash(m_bytecodes) + m_bytecodeIndex;
}
inline bool Origin::isHashTableDeletedValue() const
{
return m_bytecodeIndex == std::numeric_limits<unsigned>::max();
}
struct OriginHash {
static unsigned hash(const Origin& key) { return key.hash(); }
static bool equal(const Origin& a, const Origin& b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = true;
};
} }
namespace WTF {
template<typename T> struct DefaultHash;
template<> struct DefaultHash<JSC::Profiler::Origin> {
typedef JSC::Profiler::OriginHash Hash;
};
template<typename T> struct HashTraits;
template<> struct HashTraits<JSC::Profiler::Origin> : SimpleClassHashTraits<JSC::Profiler::Origin> { };
}