From 8f0e8d22960d56f8390f4971e2c0f2f0a0884602 Mon Sep 17 00:00:00 2001
From: John McCall <rjmccall@apple.com>
Date: Wed, 15 Jun 2011 23:25:17 +0000
Subject: The ARC Migration Tool.  All the credit goes to Argyrios and Fariborz
 for this.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133104 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/ARCMigrate/Internals.h | 146 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 lib/ARCMigrate/Internals.h

(limited to 'lib/ARCMigrate/Internals.h')

diff --git a/lib/ARCMigrate/Internals.h b/lib/ARCMigrate/Internals.h
new file mode 100644
index 0000000000..fdc0aad176
--- /dev/null
+++ b/lib/ARCMigrate/Internals.h
@@ -0,0 +1,146 @@
+//===-- Internals.h - Implementation Details---------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_ARCMIGRATE_INTERNALS_H
+#define LLVM_CLANG_LIB_ARCMIGRATE_INTERNALS_H
+
+#include "clang/ARCMigrate/ARCMT.h"
+#include "llvm/ADT/ArrayRef.h"
+
+namespace clang {
+  class Sema;
+  class Stmt;
+
+namespace arcmt {
+
+class CapturedDiagList {
+  typedef std::list<StoredDiagnostic> ListTy;
+  ListTy List;
+  
+public:
+  void push_back(const StoredDiagnostic &diag) { List.push_back(diag); }
+
+  bool clearDiagnostic(llvm::ArrayRef<unsigned> IDs, SourceRange range);
+  bool hasDiagnostic(llvm::ArrayRef<unsigned> IDs, SourceRange range);
+
+  void reportDiagnostics(Diagnostic &diags);
+};
+
+class TransformActions {
+  Diagnostic &Diags;
+  CapturedDiagList &CapturedDiags;
+  void *Impl; // TransformActionsImpl.
+
+public:
+  TransformActions(Diagnostic &diag, CapturedDiagList &capturedDiags,
+                   ASTContext &ctx, Preprocessor &PP);
+  ~TransformActions();
+
+  void startTransaction();
+  bool commitTransaction();
+  void abortTransaction();
+
+  void insert(SourceLocation loc, llvm::StringRef text);
+  void insertAfterToken(SourceLocation loc, llvm::StringRef text);
+  void remove(SourceRange range);
+  void removeStmt(Stmt *S);
+  void replace(SourceRange range, llvm::StringRef text);
+  void replace(SourceRange range, SourceRange replacementRange);
+  void replaceStmt(Stmt *S, llvm::StringRef text);
+  void replaceText(SourceLocation loc, llvm::StringRef text,
+                   llvm::StringRef replacementText);
+  void increaseIndentation(SourceRange range,
+                           SourceLocation parentIndent);
+
+  bool clearDiagnostic(llvm::ArrayRef<unsigned> IDs, SourceRange range);
+  bool clearAllDiagnostics(SourceRange range) {
+    return clearDiagnostic(llvm::ArrayRef<unsigned>(), range);
+  }
+  bool clearDiagnostic(unsigned ID1, unsigned ID2, SourceRange range) {
+    unsigned IDs[] = { ID1, ID2 };
+    return clearDiagnostic(IDs, range);
+  }
+  bool clearDiagnostic(unsigned ID1, unsigned ID2, unsigned ID3,
+                       SourceRange range) {
+    unsigned IDs[] = { ID1, ID2, ID3 };
+    return clearDiagnostic(IDs, range);
+  }
+
+  bool hasDiagnostic(unsigned ID, SourceRange range) {
+    return CapturedDiags.hasDiagnostic(ID, range);
+  }
+
+  bool hasDiagnostic(unsigned ID1, unsigned ID2, SourceRange range) {
+    unsigned IDs[] = { ID1, ID2 };
+    return CapturedDiags.hasDiagnostic(IDs, range);
+  }
+
+  void reportError(llvm::StringRef error, SourceLocation loc,
+                   SourceRange range = SourceRange());
+  void reportNote(llvm::StringRef note, SourceLocation loc,
+                  SourceRange range = SourceRange());
+
+  class RewriteReceiver {
+  public:
+    virtual ~RewriteReceiver();
+
+    virtual void insert(SourceLocation loc, llvm::StringRef text) = 0;
+    virtual void remove(CharSourceRange range) = 0;
+    virtual void increaseIndentation(CharSourceRange range,
+                                     SourceLocation parentIndent) = 0;
+  };
+
+  void applyRewrites(RewriteReceiver &receiver);
+};
+
+class Transaction {
+  TransformActions &TA;
+  bool Aborted;
+
+public:
+  Transaction(TransformActions &TA) : TA(TA), Aborted(false) {
+    TA.startTransaction();
+  }
+
+  ~Transaction() {
+    if (!isAborted())
+      TA.commitTransaction();
+  }
+
+  void abort() {
+    TA.abortTransaction();
+    Aborted = true;
+  }
+
+  bool isAborted() const { return Aborted; }
+};
+
+class MigrationPass {
+public:
+  ASTContext &Ctx;
+  Sema &SemaRef;
+  TransformActions &TA;
+  std::vector<SourceLocation> &ARCMTMacroLocs;
+
+  MigrationPass(ASTContext &Ctx, Sema &sema, TransformActions &TA,
+                std::vector<SourceLocation> &ARCMTMacroLocs)
+    : Ctx(Ctx), SemaRef(sema), TA(TA), ARCMTMacroLocs(ARCMTMacroLocs) { }
+};
+
+bool isARCDiagnostic(unsigned diagID, Diagnostic &Diag);
+
+static inline llvm::StringRef getARCMTMacroName() {
+  return "__IMPL_ARCMT_REMOVED_EXPR__";
+}
+
+} // end namespace arcmt
+
+} // end namespace clang
+
+#endif
-- 
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