1 //== CheckerContext.h - Context info for path-sensitive checkers--*- C++ -*--=//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines CheckerContext that provides contextual info for
11 // path-sensitive checkers.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_CLANG_SA_CORE_PATHSENSITIVE_CHECKERCONTEXT
16 #define LLVM_CLANG_SA_CORE_PATHSENSITIVE_CHECKERCONTEXT
18 #include "clang/Analysis/Support/SaveAndRestore.h"
19 #include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h"
25 class CheckerContext {
30 SaveAndRestore<bool> OldSink;
31 const void *checkerTag;
32 SaveAndRestore<ProgramPoint::Kind> OldPointKind;
35 const Stmt *statement;
38 bool *respondsToCallback;
40 CheckerContext(ExplodedNodeSet &dst, StmtNodeBuilder &builder,
41 ExprEngine &eng, ExplodedNode *pred,
42 const void *tag, ProgramPoint::Kind K,
43 bool *respondsToCB = 0,
44 const Stmt *stmt = 0, const GRState *st = 0)
45 : Dst(dst), B(builder), Eng(eng), Pred(pred),
46 OldSink(B.BuildSinks),
48 OldPointKind(B.PointKind, K),
49 OldHasGen(B.hasGeneratedNode),
50 ST(st), statement(stmt), size(Dst.size()),
51 respondsToCallback(respondsToCB) {}
55 ExprEngine &getEngine() {
59 AnalysisManager &getAnalysisManager() {
60 return Eng.getAnalysisManager();
63 ConstraintManager &getConstraintManager() {
64 return Eng.getConstraintManager();
67 StoreManager &getStoreManager() {
68 return Eng.getStoreManager();
71 ExplodedNodeSet &getNodeSet() { return Dst; }
72 StmtNodeBuilder &getNodeBuilder() { return B; }
73 ExplodedNode *&getPredecessor() { return Pred; }
74 const GRState *getState() { return ST ? ST : B.GetState(Pred); }
75 const Stmt *getStmt() const { return statement; }
77 ASTContext &getASTContext() {
78 return Eng.getContext();
81 BugReporter &getBugReporter() {
82 return Eng.getBugReporter();
85 SourceManager &getSourceManager() {
86 return getBugReporter().getSourceManager();
89 SValBuilder &getSValBuilder() {
90 return Eng.getSValBuilder();
93 ExplodedNode *generateNode(bool autoTransition = true) {
94 assert(statement && "Only transitions with statements currently supported");
95 ExplodedNode *N = generateNodeImpl(statement, getState(), false,
97 if (N && autoTransition)
102 ExplodedNode *generateNode(const Stmt *stmt, const GRState *state,
103 bool autoTransition = true, const void *tag = 0) {
105 ExplodedNode *N = generateNodeImpl(stmt, state, false,
106 tag ? tag : checkerTag);
107 if (N && autoTransition)
112 ExplodedNode *generateNode(const GRState *state, ExplodedNode *pred,
113 bool autoTransition = true) {
114 assert(statement && "Only transitions with statements currently supported");
115 ExplodedNode *N = generateNodeImpl(statement, state, pred, false);
116 if (N && autoTransition)
121 ExplodedNode *generateNode(const GRState *state, bool autoTransition = true,
122 const void *tag = 0) {
123 assert(statement && "Only transitions with statements currently supported");
124 ExplodedNode *N = generateNodeImpl(statement, state, false,
125 tag ? tag : checkerTag);
126 if (N && autoTransition)
131 ExplodedNode *generateSink(const Stmt *stmt, const GRState *state = 0) {
132 return generateNodeImpl(stmt, state ? state : getState(), true,
136 ExplodedNode *generateSink(const GRState *state = 0) {
137 assert(statement && "Only transitions with statements currently supported");
138 return generateNodeImpl(statement, state ? state : getState(), true,
142 void addTransition(ExplodedNode *node) {
146 void addTransition(const GRState *state, const void *tag = 0) {
148 // If the 'state' is not new, we need to check if the cached state 'ST'
150 if (state != getState() || (ST && ST != B.GetState(Pred)))
151 // state is new or equals to ST.
152 generateNode(state, true, tag);
157 void EmitReport(BugReport *R) {
158 Eng.getBugReporter().EmitReport(R);
161 AnalysisContext *getCurrentAnalysisContext() const {
162 return Pred->getLocationContext()->getAnalysisContext();
166 ExplodedNode *generateNodeImpl(const Stmt* stmt, const GRState *state,
167 bool markAsSink, const void *tag) {
168 ExplodedNode *node = B.generateNode(stmt, state, Pred, tag);
169 if (markAsSink && node)
174 ExplodedNode *generateNodeImpl(const Stmt* stmt, const GRState *state,
175 ExplodedNode *pred, bool markAsSink) {
176 ExplodedNode *node = B.generateNode(stmt, state, pred, checkerTag);
177 if (markAsSink && node)
183 } // end GR namespace
185 } // end clang namespace