Tim Starling
82 linhas
2.5 KiB
C++
82 linhas
2.5 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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*/
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#ifndef incl_HPHP_DICTIONARY_H_
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#define incl_HPHP_DICTIONARY_H_
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#include "hphp/compiler/hphp.h"
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#include "hphp/compiler/analysis/data_flow.h"
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namespace HPHP {
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///////////////////////////////////////////////////////////////////////////////
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class AliasManager;
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DECLARE_BOOST_TYPES(Statement);
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DECLARE_BOOST_TYPES(Expression);
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DECLARE_BOOST_TYPES(MethodStatement);
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class Dictionary {
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public:
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typedef std::vector<ExpressionPtr> IdMap;
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explicit Dictionary(AliasManager &am);
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void build(MethodStatementPtr s);
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void build(StatementPtr s);
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void build(ExpressionPtr s);
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virtual void visit(ExpressionPtr e) = 0;
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void record(ExpressionPtr e);
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int size() const { return m_idMap.size(); }
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void resize(int s) { m_idMap.resize(s); }
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ExpressionPtr get(int id) const { return m_idMap[id]; }
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AliasManager &am() { return m_am; }
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void beginBlock(ControlBlock *b);
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protected:
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AliasManager &m_am;
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BitOps::Bits *m_altered;
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BitOps::Bits *m_available;
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BitOps::Bits *m_anticipated;
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size_t m_width;
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private:
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IdMap m_idMap;
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};
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template <class Dict>
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class AttributeTagger : public DataFlowWalker {
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public:
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AttributeTagger(ControlFlowGraph *g, Dict &d) :
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DataFlowWalker(g), m_dict(d) {}
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void walk() { DataFlowWalker::walk(*this); }
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void processAccess(ExpressionPtr e) {
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m_dict.updateAccess(e);
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}
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void beforeBlock(ControlBlock *b) {
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m_dict.beginBlock(b);
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}
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void afterBlock(ControlBlock *b) {
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m_dict.endBlock(b);
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}
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private:
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Dict &m_dict;
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};
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///////////////////////////////////////////////////////////////////////////////
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}
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#endif // incl_HPHP_DICTIONARY_H_
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