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//===-- GRExprEngineBuilders.h - "Builder" classes for GRExprEngine -*- C++ -*-=
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines smart builder "references" which are used to marshal
// builders between GRExprEngine objects and their related components.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_ANALYSIS_GREXPRENGINE_BUILDERS
#define LLVM_CLANG_ANALYSIS_GREXPRENGINE_BUILDERS
#include "clang/Analysis/PathSensitive/GRExprEngine.h"
#include "clang/Analysis/Support/SaveAndRestore.h"
namespace clang {
class GRStmtNodeBuilderRef {
ExplodedNodeSet &Dst;
GRStmtNodeBuilder &B;
GRExprEngine& Eng;
ExplodedNode* Pred;
const GRState* state;
const Stmt* stmt;
const unsigned OldSize;
const bool AutoCreateNode;
SaveAndRestore<bool> OldSink;
SaveAndRestore<const void*> OldTag;
SaveOr OldHasGen;
private:
friend class GRExprEngine;
GRStmtNodeBuilderRef(); // do not implement
void operator=(const GRStmtNodeBuilderRef&); // do not implement
GRStmtNodeBuilderRef(ExplodedNodeSet &dst,
GRStmtNodeBuilder &builder,
GRExprEngine& eng,
ExplodedNode* pred,
const GRState *st,
const Stmt* s, bool auto_create_node)
: Dst(dst), B(builder), Eng(eng), Pred(pred),
state(st), stmt(s), OldSize(Dst.size()), AutoCreateNode(auto_create_node),
OldSink(B.BuildSinks), OldTag(B.Tag), OldHasGen(B.HasGeneratedNode) {}
public:
~GRStmtNodeBuilderRef() {
// Handle the case where no nodes where generated. Auto-generate that
// contains the updated state if we aren't generating sinks.
if (!B.BuildSinks && Dst.size() == OldSize && !B.HasGeneratedNode) {
if (AutoCreateNode)
B.MakeNode(Dst, const_cast<Stmt*>(stmt), Pred, state);
else
Dst.Add(Pred);
}
}
const GRState *getState() { return state; }
GRStateManager& getStateManager() {
return Eng.getStateManager();
}
ExplodedNode* MakeNode(const GRState* state) {
return B.MakeNode(Dst, const_cast<Stmt*>(stmt), Pred, state);
}
};
} // end clang namespace
#endif
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