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Optimize pattern matcher.

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chriseth
2017-01-12 17:52:26 +01:00
parent afad40ac5a
commit 652d8dab19
2 changed files with 22 additions and 16 deletions
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libevmasm/ExpressionClasses.h
+4 -2
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@@ -135,7 +135,7 @@ public:
// Matches a specific constant value.
Pattern(unsigned _value): Pattern(u256(_value)) {}
// Matches a specific constant value.
Pattern(u256 const& _value): m_type(Push), m_requireDataMatch(true), m_data(_value) {}
Pattern(u256 const& _value): m_type(Push), m_requireDataMatch(true), m_data(std::make_shared<u256>(_value)) {}
// Matches a specific assembly item type or anything if not given.
Pattern(AssemblyItemType _type = UndefinedItem): m_type(_type) {}
// Matches a given instruction with given arguments
@@ -160,10 +160,12 @@ public:
private:
bool matchesBaseItem(AssemblyItem const* _item) const;
Expression const& matchGroupValue() const;
u256 const& data() const;
AssemblyItemType m_type;
bool m_requireDataMatch = false;
u256 m_data = 0;
Instruction m_instruction; ///< Only valid if m_type is Operation
std::shared_ptr<u256> m_data; ///< Only valid if m_type is not Operation
std::vector<Pattern> m_arguments;
unsigned m_matchGroup = 0;
std::map<unsigned, Expression const*>* m_matchGroups = nullptr;