Tim Starling
67 linhas
2.2 KiB
C++
67 linhas
2.2 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_REF_DICT_H_
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#define incl_HPHP_REF_DICT_H_
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#include "hphp/compiler/analysis/dictionary.h"
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namespace HPHP {
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///////////////////////////////////////////////////////////////////////////////
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class RefDict : public Dictionary {
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public:
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explicit RefDict(AliasManager &am) : Dictionary(am), first_pass(true) {}
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/* Building the dictionary */
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void build(MethodStatementPtr m);
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void visit(ExpressionPtr e);
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/* Computing the attributes */
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void beginBlock(ControlBlock *b);
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void endBlock(ControlBlock *b);
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void updateParams();
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void updateAccess(ExpressionPtr e);
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void togglePass() { first_pass = !first_pass; }
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private:
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bool first_pass;
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BitOps::Bits *m_referenced;
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BitOps::Bits *m_killed;
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BitOps::Bits *m_obj;
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BitOps::Bits *m_noobj;
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MethodStatementPtr m_method_stmt;
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};
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class RefDictWalker : public ControlFlowGraphWalker {
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public:
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explicit RefDictWalker(ControlFlowGraph *g) :
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ControlFlowGraphWalker(g), first_pass(true) {}
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void walk() { ControlFlowGraphWalker::walk(*this); }
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int after(ConstructRawPtr cp);
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void togglePass() { first_pass = !first_pass; }
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private:
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bool first_pass;
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};
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///////////////////////////////////////////////////////////////////////////////
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}
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#endif // incl_HPHP_REF_DICT_H_
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