weex_core/Source/include/JavaScriptCore/dfg/DFGCFG.h

/*
 * Copyright (C) 2015 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

#pragma once

#if ENABLE(DFG_JIT)

#include "DFGBasicBlock.h"
#include "DFGBlockMapInlines.h"
#include "DFGBlockSet.h"
#include "DFGGraph.h"

namespace JSC { namespace DFG {

class CFG {
    WTF_MAKE_NONCOPYABLE(CFG);
    WTF_MAKE_FAST_ALLOCATED;
public:
    typedef BasicBlock* Node;
    typedef BlockSet Set;
    template<typename T> using Map = BlockMap<T>;
    typedef BlockList List;

    CFG(Graph& graph)
        : m_graph(graph)
    {
    }

    Node root() { return m_graph.block(0); }

    template<typename T>
    Map<T> newMap() { return BlockMap<T>(m_graph); }

    DFG::Node::SuccessorsIterable successors(Node node) { return node->successors(); }
    PredecessorList& predecessors(Node node) { return node->predecessors; }

    unsigned index(Node node) const { return node->index; }
    Node node(unsigned index) const { return m_graph.block(index); }
    unsigned numNodes() const { return m_graph.numBlocks(); }

    PointerDump<BasicBlock> dump(Node node) const { return pointerDump(node); }

    void dump(PrintStream& out) const
    {
        m_graph.dump(out);
    }

private:
    Graph& m_graph;
};

} } // namespace JSC::DFG

#endif // ENABLE(DFG_JIT)