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//===-- ExprEngineBuilders.h - "Builder" classes for ExprEngine ---*- 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 ExprEngine objects and their related components.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_GR_EXPRENGINE_BUILDERS
#define LLVM_CLANG_GR_EXPRENGINE_BUILDERS
#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h"
#include "clang/Analysis/Support/SaveAndRestore.h"
namespace clang {
namespace ento {
class StmtNodeBuilderRef {
ExplodedNodeSet &Dst;
StmtNodeBuilder &B;
ExprEngine& Eng;
ExplodedNode *Pred;
const ProgramState *state;
const Stmt *stmt;
const unsigned OldSize;
const bool AutoCreateNode;
SaveAndRestore<bool> OldSink;
SaveOr OldHasGen;
private:
friend class ExprEngine;
StmtNodeBuilderRef(); // do not implement
void operator=(const StmtNodeBuilderRef&); // do not implement
StmtNodeBuilderRef(ExplodedNodeSet &dst,
StmtNodeBuilder &builder,
ExprEngine& eng,
ExplodedNode *pred,
const ProgramState *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), OldHasGen(B.hasGeneratedNode) {}
public:
~StmtNodeBuilderRef() {
// 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 ProgramState *getState() { return state; }
ProgramStateManager& getStateManager() {
return Eng.getStateManager();
}
ExplodedNode *MakeNode(const ProgramState *state) {
return B.MakeNode(Dst, const_cast<Stmt*>(stmt), Pred, state);
}
};
} // end GR namespace
} // end clang namespace
#endif
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