65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
//= ProgramPoint.cpp - Program Points for Path-Sensitive Analysis --*- C++ -*-//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements methods for subclasses of ProgramPoint.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/CFG.h"
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#include "clang/Analysis/ProgramPoint.h"
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using namespace clang;
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BlockEdge::BlockEdge(CFG& cfg, const CFGBlock* B1, const CFGBlock* B2) {
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if (B1->succ_size() == 1) {
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assert (*(B1->succ_begin()) == B2);
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setRawData(B1, BlockEdgeSrcKind);
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}
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else if (B2->pred_size() == 1) {
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assert (*(B2->pred_begin()) == B1);
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setRawData(B2, BlockEdgeDstKind);
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}
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else
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setRawData(cfg.getBlockEdgeImpl(B1,B2), BlockEdgeAuxKind);
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}
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CFGBlock* BlockEdge::getSrc() const {
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switch (getKind()) {
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default:
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assert (false && "Invalid BlockEdgeKind.");
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return NULL;
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case BlockEdgeSrcKind:
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return reinterpret_cast<CFGBlock*>(getRawPtr());
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case BlockEdgeDstKind:
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return *(reinterpret_cast<CFGBlock*>(getRawPtr())->pred_begin());
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case BlockEdgeAuxKind:
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return reinterpret_cast<BPair*>(getRawPtr())->first;
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}
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}
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CFGBlock* BlockEdge::getDst() const {
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switch (getKind()) {
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default:
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assert (false && "Invalid BlockEdgeKind.");
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return NULL;
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case BlockEdgeSrcKind:
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return *(reinterpret_cast<CFGBlock*>(getRawPtr())->succ_begin());
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case BlockEdgeDstKind:
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return reinterpret_cast<CFGBlock*>(getRawPtr());
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case BlockEdgeAuxKind:
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return reinterpret_cast<BPair*>(getRawPtr())->second;
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}
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}
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