Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 1 | //===-- Transforms.h - Tranformations to ARC mode ---------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #ifndef LLVM_CLANG_LIB_ARCMIGRATE_TRANSFORMS_H |
| 11 | #define LLVM_CLANG_LIB_ARCMIGRATE_TRANSFORMS_H |
| 12 | |
| 13 | #include "clang/AST/RecursiveASTVisitor.h" |
Argyrios Kyrtzidis | e0ac745 | 2011-11-04 15:58:08 +0000 | [diff] [blame] | 14 | #include "clang/AST/ParentMap.h" |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 15 | #include "llvm/ADT/DenseSet.h" |
| 16 | |
| 17 | namespace clang { |
| 18 | class Decl; |
| 19 | class Stmt; |
| 20 | class BlockDecl; |
| 21 | class ObjCMethodDecl; |
| 22 | class FunctionDecl; |
| 23 | |
| 24 | namespace arcmt { |
| 25 | class MigrationPass; |
| 26 | |
| 27 | namespace trans { |
| 28 | |
Argyrios Kyrtzidis | e0ac745 | 2011-11-04 15:58:08 +0000 | [diff] [blame] | 29 | class MigrationContext; |
| 30 | |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 31 | //===----------------------------------------------------------------------===// |
| 32 | // Transformations. |
| 33 | //===----------------------------------------------------------------------===// |
| 34 | |
| 35 | void rewriteAutoreleasePool(MigrationPass &pass); |
| 36 | void rewriteUnbridgedCasts(MigrationPass &pass); |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 37 | void makeAssignARCSafe(MigrationPass &pass); |
Argyrios Kyrtzidis | e7ef855 | 2011-11-04 15:58:22 +0000 | [diff] [blame^] | 38 | void removeRetainReleaseDeallocFinalize(MigrationPass &pass); |
| 39 | void removeZeroOutPropsInDeallocFinalize(MigrationPass &pass); |
Argyrios Kyrtzidis | 14c4b44 | 2011-07-13 19:22:00 +0000 | [diff] [blame] | 40 | void rewriteProperties(MigrationPass &pass); |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 41 | void rewriteBlockObjCVariable(MigrationPass &pass); |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 42 | void rewriteUnusedInitDelegate(MigrationPass &pass); |
Argyrios Kyrtzidis | fd10398 | 2011-07-18 07:44:45 +0000 | [diff] [blame] | 43 | void checkAPIUses(MigrationPass &pass); |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 44 | |
Argyrios Kyrtzidis | e7ef855 | 2011-11-04 15:58:22 +0000 | [diff] [blame^] | 45 | void removeEmptyStatementsAndDeallocFinalize(MigrationPass &pass); |
Argyrios Kyrtzidis | fd3455a | 2011-06-21 20:20:42 +0000 | [diff] [blame] | 46 | |
Argyrios Kyrtzidis | e0ac745 | 2011-11-04 15:58:08 +0000 | [diff] [blame] | 47 | class BodyContext { |
| 48 | MigrationContext &MigrateCtx; |
| 49 | ParentMap PMap; |
| 50 | Stmt *TopStmt; |
| 51 | |
| 52 | public: |
| 53 | BodyContext(MigrationContext &MigrateCtx, Stmt *S) |
| 54 | : MigrateCtx(MigrateCtx), PMap(S), TopStmt(S) {} |
| 55 | |
| 56 | MigrationContext &getMigrationContext() { return MigrateCtx; } |
| 57 | ParentMap &getParentMap() { return PMap; } |
| 58 | Stmt *getTopStmt() { return TopStmt; } |
| 59 | }; |
| 60 | |
| 61 | class ASTTraverser { |
| 62 | public: |
| 63 | virtual ~ASTTraverser(); |
| 64 | virtual void traverseBody(BodyContext &BodyCtx) { } |
| 65 | }; |
| 66 | |
| 67 | class MigrationContext { |
| 68 | MigrationPass &Pass; |
| 69 | std::vector<ASTTraverser *> Traversers; |
| 70 | |
| 71 | public: |
| 72 | explicit MigrationContext(MigrationPass &pass) : Pass(pass) {} |
| 73 | ~MigrationContext(); |
| 74 | |
| 75 | MigrationPass &getPass() { return Pass; } |
| 76 | |
| 77 | typedef std::vector<ASTTraverser *>::iterator traverser_iterator; |
| 78 | traverser_iterator traversers_begin() { return Traversers.begin(); } |
| 79 | traverser_iterator traversers_end() { return Traversers.end(); } |
| 80 | |
| 81 | void addTraverser(ASTTraverser *traverser) { |
| 82 | Traversers.push_back(traverser); |
| 83 | } |
| 84 | |
| 85 | void traverse(TranslationUnitDecl *TU); |
| 86 | }; |
| 87 | |
| 88 | // GC transformations |
| 89 | |
| 90 | class GCCollectableCallsTraverser : public ASTTraverser { |
| 91 | public: |
| 92 | virtual void traverseBody(BodyContext &BodyCtx); |
| 93 | }; |
| 94 | |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 95 | //===----------------------------------------------------------------------===// |
| 96 | // Helpers. |
| 97 | //===----------------------------------------------------------------------===// |
| 98 | |
Argyrios Kyrtzidis | 86625b5 | 2011-07-12 22:05:17 +0000 | [diff] [blame] | 99 | /// \brief Determine whether we can add weak to the given type. |
| 100 | bool canApplyWeak(ASTContext &Ctx, QualType type); |
| 101 | |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 102 | /// \brief 'Loc' is the end of a statement range. This returns the location |
| 103 | /// immediately after the semicolon following the statement. |
| 104 | /// If no semicolon is found or the location is inside a macro, the returned |
| 105 | /// source location will be invalid. |
| 106 | SourceLocation findLocationAfterSemi(SourceLocation loc, ASTContext &Ctx); |
| 107 | |
Argyrios Kyrtzidis | aec230d | 2011-09-01 20:53:18 +0000 | [diff] [blame] | 108 | /// \brief \arg Loc is the end of a statement range. This returns the location |
| 109 | /// of the semicolon following the statement. |
| 110 | /// If no semicolon is found or the location is inside a macro, the returned |
| 111 | /// source location will be invalid. |
| 112 | SourceLocation findSemiAfterLocation(SourceLocation loc, ASTContext &Ctx); |
| 113 | |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 114 | bool hasSideEffects(Expr *E, ASTContext &Ctx); |
Argyrios Kyrtzidis | 2c18ca0 | 2011-07-14 23:32:04 +0000 | [diff] [blame] | 115 | bool isGlobalVar(Expr *E); |
Argyrios Kyrtzidis | 18fd0c6 | 2011-07-27 05:28:18 +0000 | [diff] [blame] | 116 | /// \brief Returns "nil" or "0" if 'nil' macro is not actually defined. |
| 117 | StringRef getNilString(ASTContext &Ctx); |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 118 | |
| 119 | template <typename BODY_TRANS> |
| 120 | class BodyTransform : public RecursiveASTVisitor<BodyTransform<BODY_TRANS> > { |
| 121 | MigrationPass &Pass; |
| 122 | |
| 123 | public: |
| 124 | BodyTransform(MigrationPass &pass) : Pass(pass) { } |
| 125 | |
Argyrios Kyrtzidis | b1094a0 | 2011-06-23 21:21:33 +0000 | [diff] [blame] | 126 | bool TraverseStmt(Stmt *rootS) { |
Argyrios Kyrtzidis | fd10398 | 2011-07-18 07:44:45 +0000 | [diff] [blame] | 127 | if (rootS) |
| 128 | BODY_TRANS(Pass).transformBody(rootS); |
Argyrios Kyrtzidis | 7196d06 | 2011-06-21 20:20:39 +0000 | [diff] [blame] | 129 | return true; |
| 130 | } |
| 131 | }; |
| 132 | |
| 133 | typedef llvm::DenseSet<Expr *> ExprSet; |
| 134 | |
| 135 | void clearRefsIn(Stmt *S, ExprSet &refs); |
| 136 | template <typename iterator> |
| 137 | void clearRefsIn(iterator begin, iterator end, ExprSet &refs) { |
| 138 | for (; begin != end; ++begin) |
| 139 | clearRefsIn(*begin, refs); |
| 140 | } |
| 141 | |
| 142 | void collectRefs(ValueDecl *D, Stmt *S, ExprSet &refs); |
| 143 | |
| 144 | void collectRemovables(Stmt *S, ExprSet &exprs); |
| 145 | |
| 146 | } // end namespace trans |
| 147 | |
| 148 | } // end namespace arcmt |
| 149 | |
| 150 | } // end namespace clang |
| 151 | |
| 152 | #endif |