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f57351570e
along the way. Important changes: 1) To generate a sink node, use GenerateSink(); GenerateNode() is for generating regular transitions. This makes the API clearer and also allows us to use the 'bool' option to GenerateNode() for a different purpose. 2) GenerateNode() now automatically adds the generated node to the destination ExplodedNodeSet (autotransition) unless the client specifies otherwise with a bool flag. Several checkers did not call 'addTransition()' after calling 'GenerateNode()', causing the simulation path to be prematurely culled when a non-fail stop bug was encountered. 3) Add variants of GenerateNode()/GenerateSink() that take neither a Stmt* or a GRState*; most callers of GenerateNode() just pass in the same Stmt* as provided when the CheckerContext object is created; we can just use that the majority of the time. This cleanup also allows us to potentially coelesce the APIs for evaluating branches and end-of-paths (which currently directly use builders). 4) addTransition() no longer needs to be called except for a few cases. We now have a variant of addTransition() that takes a GRState*; this allows one to propagate the updated state without caring about generating a new node explicitly. This nicely cleaned up a bunch of cases that called autoTransition() with a bunch of conditional logic surround the call (that common logic has now been swallowed up by addTransition() itself). llvm-svn: 89707
36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
//== Checker.h - Abstract interface for checkers -----------------*- 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 Checker and CheckerVisitor, classes used for creating
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// domain-specific checks.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Analysis/PathSensitive/Checker.h"
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using namespace clang;
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Checker::~Checker() {}
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CheckerContext::~CheckerContext() {
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// Do we need to autotransition? 'Dst' can get populated in a variety of
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// ways, including 'addTransition()' adding the predecessor node to Dst
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// without actually generated a new node. We also shouldn't autotransition
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// if we are building sinks or we generated a node and decided to not
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// add it as a transition.
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if (Dst.size() == size && !B.BuildSinks && !B.HasGeneratedNode) {
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if (state && state != B.GetState(Pred)) {
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static int autoTransitionTag = 0;
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B.Tag = &autoTransitionTag;
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addTransition(state);
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}
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else
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Dst.Add(Pred);
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}
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}
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