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80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
//===-- ExprEngineBuilders.h - "Builder" classes for ExprEngine ---*- 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 defines smart builder "references" which are used to marshal
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// builders between ExprEngine objects and their related components.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_GR_EXPRENGINE_BUILDERS
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#define LLVM_CLANG_GR_EXPRENGINE_BUILDERS
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#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h"
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#include "clang/Analysis/Support/SaveAndRestore.h"
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namespace clang {
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namespace ento {
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class StmtNodeBuilderRef {
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ExplodedNodeSet &Dst;
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StmtNodeBuilder &B;
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ExprEngine& Eng;
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ExplodedNode* Pred;
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const GRState* state;
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const Stmt* stmt;
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const unsigned OldSize;
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const bool AutoCreateNode;
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SaveAndRestore<bool> OldSink;
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SaveOr OldHasGen;
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private:
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friend class ExprEngine;
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StmtNodeBuilderRef(); // do not implement
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void operator=(const StmtNodeBuilderRef&); // do not implement
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StmtNodeBuilderRef(ExplodedNodeSet &dst,
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StmtNodeBuilder &builder,
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ExprEngine& eng,
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ExplodedNode* pred,
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const GRState *st,
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const Stmt* s, bool auto_create_node)
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: Dst(dst), B(builder), Eng(eng), Pred(pred),
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state(st), stmt(s), OldSize(Dst.size()), AutoCreateNode(auto_create_node),
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OldSink(B.BuildSinks), OldHasGen(B.hasGeneratedNode) {}
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public:
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~StmtNodeBuilderRef() {
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// Handle the case where no nodes where generated. Auto-generate that
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// contains the updated state if we aren't generating sinks.
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if (!B.BuildSinks && Dst.size() == OldSize && !B.hasGeneratedNode) {
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if (AutoCreateNode)
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B.MakeNode(Dst, const_cast<Stmt*>(stmt), Pred, state);
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else
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Dst.Add(Pred);
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}
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}
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const GRState *getState() { return state; }
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GRStateManager& getStateManager() {
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return Eng.getStateManager();
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}
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ExplodedNode* MakeNode(const GRState* state) {
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return B.MakeNode(Dst, const_cast<Stmt*>(stmt), Pred, state);
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}
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};
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} // end GR namespace
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} // end clang namespace
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#endif
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