CFG.h revision 53de134e7b4686eed40bc031438d8a4560a2cda4
1fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek//===--- CFG.h - Classes for representing and building CFGs------*- C++ -*-===// 2fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// 3fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// The LLVM Compiler Infrastructure 4fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 7fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// 8fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek//===----------------------------------------------------------------------===// 9fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// 10fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// This file defines the CFG and CFGBuilder classes for representing and 11fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// building Control-Flow Graphs (CFGs) from ASTs. 12fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek// 13fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek//===----------------------------------------------------------------------===// 14fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 15cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek#ifndef LLVM_CLANG_CFG_H 16cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek#define LLVM_CLANG_CFG_H 17cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek 18852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek#include "llvm/ADT/PointerIntPair.h" 197dba8607e59096014b7139ff20ef00870041d518Ted Kremenek#include "llvm/ADT/GraphTraits.h" 20ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek#include "llvm/Support/Allocator.h" 21852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek#include "llvm/Support/Casting.h" 22ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek#include "clang/Analysis/Support/BumpVector.h" 23079bd72439448b78629a28da6b1f8abe2cdeaf4dMike Stump#include "clang/Basic/SourceLocation.h" 24c1581a0d64b0ee4f822ed2fca4442a111d03569aHartmut Kaiser#include <cassert> 25fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 26e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattnernamespace llvm { 27e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner class raw_ostream; 28e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner} 292a4cd498ff9b2b126de3e370b768ab307c221ab8Marcin Swiderski 30fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremeneknamespace clang { 31b978a441c7d8bf59e7fede938e1f3b672573b443Mike Stump class Decl; 3242a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class Stmt; 3363f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek class Expr; 341cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski class VarDecl; 351cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski class CXXBaseOrMemberInitializer; 3642a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class CFG; 3742a509f6a4f71bb805cc4abbb26722a34dffdddeTed Kremenek class PrinterHelper; 38e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner class LangOptions; 39e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump class ASTContext; 40e5af3ce53ec58995b09381ba645ab2117a46647bMike Stump 41852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek/// CFGElement - Represents a top-level expression in a basic block. 42852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenekclass CFGElement { 43852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenekpublic: 44b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu enum Kind { 45b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // main kind 46b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Statement, 47b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu StatementAsLValue, 48b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Initializer, 49b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Dtor, 50b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // dtor kind 51b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu AutomaticObjectDtor, 52b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu BaseDtor, 53b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu MemberDtor, 54b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu TemporaryDtor, 55b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu DTOR_BEGIN = AutomaticObjectDtor 56b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu }; 57b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 58b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuprotected: 59b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // The int bits are used to mark the main kind. 60b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu llvm::PointerIntPair<void *, 2> Data1; 61b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu // The int bits are used to mark the dtor kind. 62b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu llvm::PointerIntPair<void *, 2> Data2; 63b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 641cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGElement(void *Ptr, unsigned Int) : Data1(Ptr, Int) {} 651cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGElement(void *Ptr1, unsigned Int1, void *Ptr2, unsigned Int2) 661cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski : Data1(Ptr1, Int1), Data2(Ptr2, Int2) {} 671cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 68b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 69b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement() {} 70b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 71b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Kind getKind() const { return static_cast<Kind>(Data1.getInt()); } 72b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 73b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Kind getDtorKind() const { 74b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu assert(getKind() == Dtor); 75b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return static_cast<Kind>(Data2.getInt() + DTOR_BEGIN); 76b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 77b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 78b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu bool isValid() const { return Data1.getPointer(); } 79b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 80b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu operator bool() const { return isValid(); } 81b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 82b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu template<class ElemTy> ElemTy getAs() const { 83b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu if (llvm::isa<ElemTy>(this)) 84b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return *static_cast<const ElemTy*>(this); 85b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return ElemTy(); 86b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 87b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 88b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { return true; } 89b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 90b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 91b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGStmt : public CFGElement { 92b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 93b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGStmt() {} 94b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGStmt(Stmt *S, bool asLValue) : CFGElement(S, asLValue) {} 95b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 96b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Stmt *getStmt() const { return static_cast<Stmt *>(Data1.getPointer()); } 97b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 98852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek operator Stmt*() const { return getStmt(); } 99b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 100b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu bool asLValue() const { 101b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return static_cast<Kind>(Data1.getInt()) == StatementAsLValue; 102b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 103b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 104b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 105b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Statement || E->getKind() == StatementAsLValue; 106b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 107b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 108b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1091cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// CFGInitializer - Represents C++ base or member initializer from 1101cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// constructor's initialization list. 111b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGInitializer : public CFGElement { 112b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1131cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGInitializer() {} 1141cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGInitializer(CXXBaseOrMemberInitializer* I) 1151cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski : CFGElement(I, Initializer) {} 1161cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1171cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CXXBaseOrMemberInitializer* getInitializer() const { 1181cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<CXXBaseOrMemberInitializer*>(Data1.getPointer()); 1191cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1201cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski operator CXXBaseOrMemberInitializer*() const { return getInitializer(); } 1211cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 122b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 123b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Initializer; 124b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 125b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 126b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 12753de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski/// CFGImplicitDtor - Represents C++ object destructor implicitly generated 1281cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// by compiler on various occasions. 129b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGImplicitDtor : public CFGElement { 1301cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderskiprotected: 1311cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGImplicitDtor(unsigned K, void* P, void* S) 1321cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski : CFGElement(P, Dtor, S, K - DTOR_BEGIN) {} 1331cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 134b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1351cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGImplicitDtor() {} 1361cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 137b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 138b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Dtor; 139b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 140b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 141b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 1421cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// CFGAutomaticObjDtor - Represents C++ object destructor implicit generated 1431cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// for automatic object or temporary bound to const reference at the point 1441cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski/// of leaving its local scope. 145b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGAutomaticObjDtor: public CFGImplicitDtor { 146b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 1471cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGAutomaticObjDtor() {} 1481cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski CFGAutomaticObjDtor(VarDecl* VD, Stmt* S) 1491cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski : CFGImplicitDtor(AutomaticObjectDtor, VD, S) {} 1501cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1511cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski VarDecl* getVarDecl() const { 1521cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<VarDecl*>(Data1.getPointer()); 1531cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1541cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 1551cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski // Get statement end of which triggered the destructor call. 1561cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski Stmt* getTriggerStmt() const { 1571cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski return static_cast<Stmt*>(Data2.getPointer()); 1581cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski } 1591cff132e48e0ccc253c34e5a2fb12718bd4e7d2eMarcin Swiderski 160b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 161b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Dtor && E->getDtorKind() == AutomaticObjectDtor; 162b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 163b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 164b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 165b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGBaseDtor : public CFGImplicitDtor { 166b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 167b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 168b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Dtor && E->getDtorKind() == BaseDtor; 169b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 170b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 171b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 172b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGMemberDtor : public CFGImplicitDtor { 173b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 174b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 175b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Dtor && E->getDtorKind() == MemberDtor; 176b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 177b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 178b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu}; 179b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu 180b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xuclass CFGTemporaryDtor : public CFGImplicitDtor { 181b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xupublic: 182b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu static bool classof(const CFGElement *E) { 183b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu return E->getKind() == Dtor && E->getDtorKind() == TemporaryDtor; 184b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 185852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek}; 186852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek 187fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlock - Represents a single basic block in a source-level CFG. 188fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// It consists of: 189fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 190fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (1) A set of statements/expressions (which may contain subexpressions). 191fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (2) A "terminator" statement (not in the set of statements). 192fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// (3) A list of successors and predecessors. 193fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 194fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator: The terminator represents the type of control-flow that occurs 195fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// at the end of the basic block. The terminator is a Stmt* referring to an 196fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// AST node that has control-flow: if-statements, breaks, loops, etc. 197fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// If the control-flow is conditional, the condition expression will appear 198fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// within the set of statements in the block (usually the last statement). 199fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 200fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Predecessors: the order in the set of predecessors is arbitrary. 201fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 202fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Successors: the order in the set of successors is NOT arbitrary. We 203fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// currently have the following orderings based on the terminator: 204fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 205fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Terminator Successor Ordering 206fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// ----------------------------------------------------- 207fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// if Then Block; Else Block 2089cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// ? operator LHS expression; RHS expression 2099cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek/// &&, || expression that uses result of && or ||, RHS 210fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// 211fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFGBlock { 212b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu class ElementList { 213852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef BumpVector<CFGElement> ImplTy; 2146c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek ImplTy Impl; 2156c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek public: 216b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu ElementList(BumpVectorContext &C) : Impl(C, 4) {} 217ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 2186c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::iterator> iterator; 2196c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef std::reverse_iterator<ImplTy::const_iterator> const_iterator; 2206c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef ImplTy::iterator reverse_iterator; 2216c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek typedef ImplTy::const_iterator const_reverse_iterator; 2226c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 223852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek void push_back(CFGElement e, BumpVectorContext &C) { Impl.push_back(e, C); } 22453de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski reverse_iterator insert(reverse_iterator I, size_t Cnt, CFGElement E, 22553de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski BumpVectorContext& C) { 22653de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return Impl.insert(I, Cnt, E, C); 22753de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 22853de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski 229852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement front() const { return Impl.back(); } 230852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement back() const { return Impl.front(); } 2316c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 2326c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator begin() { return Impl.rbegin(); } 2336c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek iterator end() { return Impl.rend(); } 2346c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator begin() const { return Impl.rbegin(); } 2356c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_iterator end() const { return Impl.rend(); } 2366c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rbegin() { return Impl.begin(); } 2376c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek reverse_iterator rend() { return Impl.end(); } 2386c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rbegin() const { return Impl.begin(); } 2396c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek const_reverse_iterator rend() const { return Impl.end(); } 2406c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 241852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek CFGElement operator[](size_t i) const { 2426c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek assert(i < Impl.size()); 2436c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek return Impl[Impl.size() - 1 - i]; 2446c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek } 2456c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 2466c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek size_t size() const { return Impl.size(); } 2476c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek bool empty() const { return Impl.empty(); } 2486c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek }; 2496c2497248bc4f7fd8e5fb0a206d20abbf0e16645Ted Kremenek 250fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Stmts - The set of statements in the basic block. 251b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu ElementList Elements; 2529cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 2539cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Label - An (optional) label that prefixes the executable 2549cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// statements in the block. When this variable is non-NULL, it is 2554c45aa1b00b91847acfb082acfaced3ffa294d1dMike Stump /// either an instance of LabelStmt, SwitchCase or CXXCatchStmt. 2563575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek Stmt *Label; 2571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2589cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek /// Terminator - The terminator for a basic block that 259fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// indicates the type of control-flow that occurs between a block 260fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// and its successors. 2613575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek Stmt *Terminator; 2621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2633575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// LoopTarget - Some blocks are used to represent the "loop edge" to 2643575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// the start of a loop from within the loop body. This Stmt* will be 2653575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek /// refer to the loop statement for such blocks (and be null otherwise). 2661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const Stmt *LoopTarget; 2671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 268fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// BlockID - A numerical ID assigned to a CFGBlock during construction 269fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// of the CFG. 270fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned BlockID; 2711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 272fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// Predecessors/Successors - Keep track of the predecessor / successor 273fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek /// CFG blocks. 274ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek typedef BumpVector<CFGBlock*> AdjacentBlocks; 275fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Preds; 276fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek AdjacentBlocks Succs; 2771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 278fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 279ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek explicit CFGBlock(unsigned blockid, BumpVectorContext &C) 280b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu : Elements(C), Label(NULL), Terminator(NULL), LoopTarget(NULL), 281ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BlockID(blockid), Preds(C, 1), Succs(C, 1) {} 2827177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar ~CFGBlock() {} 283fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 284fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Statement iterators 285b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::iterator iterator; 286b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::const_iterator const_iterator; 287b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::reverse_iterator reverse_iterator; 288b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu typedef ElementList::const_reverse_iterator const_reverse_iterator; 2891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 290b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement front() const { return Elements.front(); } 291b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement back() const { return Elements.back(); } 2921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 293b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu iterator begin() { return Elements.begin(); } 294b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu iterator end() { return Elements.end(); } 295b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_iterator begin() const { return Elements.begin(); } 296b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_iterator end() const { return Elements.end(); } 297fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 298b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu reverse_iterator rbegin() { return Elements.rbegin(); } 299b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu reverse_iterator rend() { return Elements.rend(); } 300b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_reverse_iterator rbegin() const { return Elements.rbegin(); } 301b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu const_reverse_iterator rend() const { return Elements.rend(); } 3021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 303b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu unsigned size() const { return Elements.size(); } 304b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu bool empty() const { return Elements.empty(); } 305be7a7d6f2e5b86807afd08a568863df973baaa38Ted Kremenek 306b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu CFGElement operator[](size_t i) const { return Elements[i]; } 3071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 308fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // CFG iterators 309fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator pred_iterator; 310fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_pred_iterator; 311fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator pred_reverse_iterator; 312fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_pred_reverse_iterator; 313fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 314fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::iterator succ_iterator; 315fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_iterator const_succ_iterator; 316fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::reverse_iterator succ_reverse_iterator; 317fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek typedef AdjacentBlocks::const_reverse_iterator const_succ_reverse_iterator; 3181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 319fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_begin() { return Preds.begin(); } 320fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_iterator pred_end() { return Preds.end(); } 321fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_begin() const { return Preds.begin(); } 322fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_iterator pred_end() const { return Preds.end(); } 3231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 324fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek pred_reverse_iterator pred_rbegin() { return Preds.rbegin(); } 3251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump pred_reverse_iterator pred_rend() { return Preds.rend(); } 326fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rbegin() const { return Preds.rbegin(); } 327fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_pred_reverse_iterator pred_rend() const { return Preds.rend(); } 328fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 3291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump succ_iterator succ_begin() { return Succs.begin(); } 330fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_iterator succ_end() { return Succs.end(); } 331fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_iterator succ_begin() const { return Succs.begin(); } 3321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_succ_iterator succ_end() const { return Succs.end(); } 3331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 334fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rbegin() { return Succs.rbegin(); } 335fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek succ_reverse_iterator succ_rend() { return Succs.rend(); } 336fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rbegin() const { return Succs.rbegin(); } 337fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek const_succ_reverse_iterator succ_rend() const { return Succs.rend(); } 338fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 339fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned succ_size() const { return Succs.size(); } 340fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool succ_empty() const { return Succs.empty(); } 341fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 342fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned pred_size() const { return Preds.size(); } 343fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek bool pred_empty() const { return Preds.empty(); } 3441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 345ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 346ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek class FilterOptions { 347ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek public: 348ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek FilterOptions() { 349ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek IgnoreDefaultsWithCoveredEnums = 0; 350be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek } 351ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 352ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek unsigned IgnoreDefaultsWithCoveredEnums : 1; 353ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek }; 354ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 355ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek static bool FilterEdge(const FilterOptions &F, const CFGBlock *Src, 356be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const CFGBlock *Dst); 357ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 358ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek template <typename IMPL, bool IsPred> 359ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek class FilteredCFGBlockIterator { 360ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek private: 361ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek IMPL I, E; 362ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const FilterOptions F; 363ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const CFGBlock *From; 364ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek public: 365ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek explicit FilteredCFGBlockIterator(const IMPL &i, const IMPL &e, 366be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const CFGBlock *from, 367be39a566a914df8561d7a1e9654708297f0908c1Ted Kremenek const FilterOptions &f) 368ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek : I(i), E(e), F(f), From(from) {} 369ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 370ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek bool hasMore() const { return I != E; } 371ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 372ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek FilteredCFGBlockIterator &operator++() { 373ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek do { ++I; } while (hasMore() && Filter(*I)); 374ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return *this; 375ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 376ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 377ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek const CFGBlock *operator*() const { return *I; } 378ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek private: 379ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek bool Filter(const CFGBlock *To) { 380ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return IsPred ? FilterEdge(F, To, From) : FilterEdge(F, From, To); 381ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 382ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek }; 383ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 384ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek typedef FilteredCFGBlockIterator<const_pred_iterator, true> 385ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_pred_iterator; 386ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 387ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek typedef FilteredCFGBlockIterator<const_succ_iterator, false> 388ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_succ_iterator; 389ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 390ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_pred_iterator filtered_pred_start_end(const FilterOptions &f) const { 391ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return filtered_pred_iterator(pred_begin(), pred_end(), this, f); 392ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 393ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 394ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek filtered_succ_iterator filtered_succ_start_end(const FilterOptions &f) const { 395ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek return filtered_succ_iterator(succ_begin(), succ_end(), this, f); 396ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek } 397ee7f84d509c6382491673883598eb9ed2d3a6a8bTed Kremenek 398fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek // Manipulation of block contents 3991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4009cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek void setTerminator(Stmt* Statement) { Terminator = Statement; } 4019cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek void setLabel(Stmt* Statement) { Label = Statement; } 4023575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek void setLoopTarget(const Stmt *loopTarget) { LoopTarget = loopTarget; } 4039cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek 4049cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek Stmt* getTerminator() { return Terminator; } 4059cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek const Stmt* getTerminator() const { return Terminator; } 4061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 407390e48b15ad93f85bfd1e33b9992c198fa0db475Ted Kremenek Stmt* getTerminatorCondition(); 4081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 409390e48b15ad93f85bfd1e33b9992c198fa0db475Ted Kremenek const Stmt* getTerminatorCondition() const { 410411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek return const_cast<CFGBlock*>(this)->getTerminatorCondition(); 411411cdee0b490f79428c9eb977f25199eb7d21cd8Ted Kremenek } 4121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4133575f84e459033d6427b84b4b795b22c85c4d27dTed Kremenek const Stmt *getLoopTarget() const { return LoopTarget; } 4141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4159c2535a35db35b3a821a0d0c36a01a16f52f1ad0Ted Kremenek bool hasBinaryBranchTerminator() const; 4161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4179cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek Stmt* getLabel() { return Label; } 4189cffe7366ea3beb33c2d58f43a8c3a04c1873e11Ted Kremenek const Stmt* getLabel() const { return Label; } 4191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 420fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek unsigned getBlockID() const { return BlockID; } 4211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 422e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void dump(const CFG *cfg, const LangOptions &LO) const; 423e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void print(llvm::raw_ostream &OS, const CFG* cfg, const LangOptions &LO) const; 424e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void printTerminator(llvm::raw_ostream &OS, const LangOptions &LO) const; 425ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 426ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek void addSuccessor(CFGBlock* Block, BumpVectorContext &C) { 427ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek if (Block) 428ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek Block->Preds.push_back(this, C); 429ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek Succs.push_back(Block, C); 430ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek } 431ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 432852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek void appendStmt(Stmt* Statement, BumpVectorContext &C, bool asLValue) { 433b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu Elements.push_back(CFGStmt(Statement, asLValue), C); 434079bd72439448b78629a28da6b1f8abe2cdeaf4dMike Stump } 43553de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski 43653de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // Destructors must be inserted in reversed order. So insertion is in two 43753de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // steps. First we prepare space for some number of elements, then we insert 43853de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski // the elements beginning at the last position in prepared space. 43953de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski iterator beginAutomaticObjDtorsInsert(iterator I, size_t Cnt, 44053de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski BumpVectorContext& C) { 44153de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return iterator(Elements.insert(I.base(), Cnt, CFGElement(), C)); 44253de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 44353de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski iterator insertAutomaticObjDtor(iterator I, VarDecl* VD, Stmt* S) { 44453de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski *I = CFGAutomaticObjDtor(VD, S); 44553de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski return ++I; 44653de134e7b4686eed40bc031438d8a4560a2cda4Marcin Swiderski } 447fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 4481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 449fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFG - Represents a source-level, intra-procedural CFG that represents the 450fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// control-flow of a Stmt. The Stmt can represent an entire function body, 451fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// or a single expression. A CFG will always contain one empty block that 452fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// represents the Exit point of the CFG. A CFG will also contain a designated 453fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// Entry block. The CFG solely represents control-flow; it consists of 454fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// CFGBlocks which are simply containers of Stmt*'s in the AST the CFG 455fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek/// was constructed from. 456fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekclass CFG { 457fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenekpublic: 458a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 459a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Construction & Manipulation. 460a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 461a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 4626c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek class BuildOptions { 4636c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek public: 4646c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek bool PruneTriviallyFalseEdges:1; 4656c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek bool AddEHEdges:1; 4666c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek bool AddInitializers:1; 4676c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek bool AddImplicitDtors:1; 4686c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek 4696c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek BuildOptions() 4706c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek : PruneTriviallyFalseEdges(true) 4716c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek , AddEHEdges(false) 4726c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek , AddInitializers(false) 4736c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek , AddImplicitDtors(false) {} 4746c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek }; 4756c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek 476a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// buildCFG - Builds a CFG from an AST. The responsibility to free the 4771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// constructed CFG belongs to the caller. 478b978a441c7d8bf59e7fede938e1f3b672573b443Mike Stump static CFG* buildCFG(const Decl *D, Stmt* AST, ASTContext *C, 4796c52c7850bccb6991470668429a1e1edf01b0873Ted Kremenek BuildOptions BO = BuildOptions()); 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 481a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// createBlock - Create a new block in the CFG. The CFG owns the block; 482a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// the caller should not directly free it. 483a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* createBlock(); 4841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 485a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// setEntry - Set the entry block of the CFG. This is typically used 486a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// only during CFG construction. Most CFG clients expect that the 487a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek /// entry block has no predecessors and contains no statements. 488a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek void setEntry(CFGBlock *B) { Entry = B; } 4891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 490e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// setIndirectGotoBlock - Set the block used for indirect goto jumps. 491e38158de9236dfcded7da56126134e5e3e49cb01Ted Kremenek /// This is typically used only during CFG construction. 492a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek void setIndirectGotoBlock(CFGBlock* B) { IndirectGotoBlock = B; } 4931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 494a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 495a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Block Iterators 496a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 497a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 498ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek typedef BumpVector<CFGBlock*> CFGBlockListTy; 499a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::iterator iterator; 500a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef CFGBlockListTy::const_iterator const_iterator; 501a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<iterator> reverse_iterator; 502a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 503fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek 504ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek CFGBlock& front() { return *Blocks.front(); } 505ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek CFGBlock& back() { return *Blocks.back(); } 5061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 50719bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator begin() { return Blocks.begin(); } 50819bb356317952445b03ee341c02f6147083c9eeaTed Kremenek iterator end() { return Blocks.end(); } 50919bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_iterator begin() const { return Blocks.begin(); } 5101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_iterator end() const { return Blocks.end(); } 5111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 51219bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rbegin() { return Blocks.rbegin(); } 51319bb356317952445b03ee341c02f6147083c9eeaTed Kremenek reverse_iterator rend() { return Blocks.rend(); } 51419bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rbegin() const { return Blocks.rbegin(); } 51519bb356317952445b03ee341c02f6147083c9eeaTed Kremenek const_reverse_iterator rend() const { return Blocks.rend(); } 5161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 51719bb356317952445b03ee341c02f6147083c9eeaTed Kremenek CFGBlock& getEntry() { return *Entry; } 5187dba8607e59096014b7139ff20ef00870041d518Ted Kremenek const CFGBlock& getEntry() const { return *Entry; } 51919bb356317952445b03ee341c02f6147083c9eeaTed Kremenek CFGBlock& getExit() { return *Exit; } 5207dba8607e59096014b7139ff20ef00870041d518Ted Kremenek const CFGBlock& getExit() const { return *Exit; } 5217dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 5227dba8607e59096014b7139ff20ef00870041d518Ted Kremenek CFGBlock* getIndirectGotoBlock() { return IndirectGotoBlock; } 5237dba8607e59096014b7139ff20ef00870041d518Ted Kremenek const CFGBlock* getIndirectGotoBlock() const { return IndirectGotoBlock; } 5241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 525a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 526a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek // Member templates useful for various batch operations over CFGs. 527a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 5281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 529a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek template <typename CALLBACK> 530a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek void VisitBlockStmts(CALLBACK& O) const { 531a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek for (const_iterator I=begin(), E=end(); I != E; ++I) 532ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek for (CFGBlock::const_iterator BI=(*I)->begin(), BE=(*I)->end(); 533b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu BI != BE; ++BI) { 534b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu if (CFGStmt S = BI->getAs<CFGStmt>()) 535b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu O(S); 536b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 5371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 5381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 539a90b0d1e585d993621a342d0b2874e61941372d5Ted Kremenek //===--------------------------------------------------------------------===// 540a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Introspection. 541a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 542a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 54363f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek struct BlkExprNumTy { 54463f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek const signed Idx; 54563f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek explicit BlkExprNumTy(signed idx) : Idx(idx) {} 54663f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek explicit BlkExprNumTy() : Idx(-1) {} 54763f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek operator bool() const { return Idx >= 0; } 54863f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek operator unsigned() const { assert(Idx >=0); return (unsigned) Idx; } 54963f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek }; 5501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 55186946745225096243f6969dc745267b78fc211a6Ted Kremenek bool isBlkExpr(const Stmt* S) { return getBlkExprNum(S); } 55286946745225096243f6969dc745267b78fc211a6Ted Kremenek BlkExprNumTy getBlkExprNum(const Stmt* S); 55363f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek unsigned getNumBlkExprs(); 5541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5550c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// getNumBlockIDs - Returns the total number of BlockIDs allocated (which 5560c8c5365be0176e8399e97d7da3293c79bc9da24Mike Stump /// start at 0). 5579438252ad2ecae5338df565ca33c6969e4fbfa41Ted Kremenek unsigned getNumBlockIDs() const { return NumBlockIDs; } 558a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 559a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 560a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // CFG Debugging: Pretty-Printing and Visualization. 561a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 562a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 563e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void viewCFG(const LangOptions &LO) const; 564e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void print(llvm::raw_ostream& OS, const LangOptions &LO) const; 565e4f2142d00fa5fdb580c4e2413da91882d955381Chris Lattner void dump(const LangOptions &LO) const; 566a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 567a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 568a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek // Internal: constructors and data. 569a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek //===--------------------------------------------------------------------===// 570a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek 5711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CFG() : Entry(NULL), Exit(NULL), IndirectGotoBlock(NULL), NumBlockIDs(0), 5727177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar BlkExprMap(NULL), Blocks(BlkBVC, 10) {} 5731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 57463f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek ~CFG(); 5751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 576ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek llvm::BumpPtrAllocator& getAllocator() { 577ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek return BlkBVC.getAllocator(); 578ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek } 579ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 580ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BumpVectorContext &getBumpVectorContext() { 581ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek return BlkBVC; 582ce1eb34bbea1e0408f1952776d7d52ccde1bd275Ted Kremenek } 5831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 584a36c6540346266f570b2fc7457950dea45d89988Ted Kremenekprivate: 585a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* Entry; 586a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* Exit; 587a36c6540346266f570b2fc7457950dea45d89988Ted Kremenek CFGBlock* IndirectGotoBlock; // Special block to contain collective dispatch 588ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek // for indirect gotos 58963f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek unsigned NumBlockIDs; 5901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 59186d1777a6b7723865c1e67a7aafc797ec0a574ffTed Kremenek // BlkExprMap - An opaque pointer to prevent inclusion of DenseMap.h. 5921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // It represents a map from Expr* to integers to record the set of 59386d1777a6b7723865c1e67a7aafc797ec0a574ffTed Kremenek // block-level expressions and their "statement number" in the CFG. 59463f5887f316fb52d243fcbb3631c039de6c4b993Ted Kremenek void* BlkExprMap; 595ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 596ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek BumpVectorContext BlkBVC; 597ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek 598ee82d9bdc5025b82de8ce2a4ad4685e0a8b79da9Ted Kremenek CFGBlockListTy Blocks; 5991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 600fddd51853f8ccaa1df2476376e6fd74d2f315c73Ted Kremenek}; 601fa2be43dbd6fdc4414e261db69aaf35dfb21a416Ted Kremenek} // end namespace clang 6027dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6037dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 6047dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// GraphTraits specializations for CFG basic block graphs (source-level CFGs) 6057dba8607e59096014b7139ff20ef00870041d518Ted Kremenek//===----------------------------------------------------------------------===// 6067dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6077dba8607e59096014b7139ff20ef00870041d518Ted Kremeneknamespace llvm { 6087dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6097dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFGBlock 6107dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 611852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits< ::clang::CFGBlock* > { 612852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock NodeType; 613852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::succ_iterator ChildIteratorType; 6141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 615852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType* getEntryNode(::clang::CFGBlock* BB) 6167dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 6177dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6187dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 6197dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 6201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6217dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 6227dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 6237dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 6247dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 625852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits< const ::clang::CFGBlock* > { 626852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef const ::clang::CFGBlock NodeType; 627852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::const_succ_iterator ChildIteratorType; 6281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6297dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static NodeType* getEntryNode(const clang::CFGBlock* BB) 6307dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return BB; } 6311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6327dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 6337dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_begin(); } 6341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6357dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 6367dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->succ_end(); } 6377dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 6387dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 639852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<Inverse<const ::clang::CFGBlock*> > { 640852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef const ::clang::CFGBlock NodeType; 641852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFGBlock::const_pred_iterator ChildIteratorType; 6427dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 643852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(Inverse<const ::clang::CFGBlock*> G) 6447dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return G.Graph; } 6457dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6467dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) 6477dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_begin(); } 6481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6497dba8607e59096014b7139ff20ef00870041d518Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) 6507dba8607e59096014b7139ff20ef00870041d518Ted Kremenek { return N->pred_end(); } 6517dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 6527dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 6537dba8607e59096014b7139ff20ef00870041d518Ted Kremenek// Traits for: CFG 6547dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 655852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits< ::clang::CFG* > 656852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek : public GraphTraits< ::clang::CFGBlock* > { 6577dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 658852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFG::iterator nodes_iterator; 6591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 660852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(::clang::CFG* F) { return &F->getEntry(); } 661852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin(::clang::CFG* F) { return F->begin(); } 662852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end(::clang::CFG* F) { return F->end(); } 6637dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 6647dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 665852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<const ::clang::CFG* > 666852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek : public GraphTraits<const ::clang::CFGBlock* > { 6677dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 668852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFG::const_iterator nodes_iterator; 6697dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 670852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode( const ::clang::CFG* F) { 671852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return &F->getEntry(); 672852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 673852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin( const ::clang::CFG* F) { 674852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return F->begin(); 675852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 676852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end( const ::clang::CFG* F) { 677852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return F->end(); 678852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek } 6797dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 6807dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 681852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenektemplate <> struct GraphTraits<Inverse<const ::clang::CFG*> > 682852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek : public GraphTraits<Inverse<const ::clang::CFGBlock*> > { 6837dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 684852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek typedef ::clang::CFG::const_iterator nodes_iterator; 6857dba8607e59096014b7139ff20ef00870041d518Ted Kremenek 686852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static NodeType *getEntryNode(const ::clang::CFG* F) { return &F->getExit(); } 687852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_begin(const ::clang::CFG* F) { return F->begin();} 688852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek static nodes_iterator nodes_end(const ::clang::CFG* F) { return F->end(); } 6897dba8607e59096014b7139ff20ef00870041d518Ted Kremenek}; 6907dba8607e59096014b7139ff20ef00870041d518Ted Kremenek} // end llvm namespace 691cd881d534517f09a2fae10445f9b865f49ccc6c8Ted Kremenek#endif 692