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diff --git a/clang-r353983e/include/clang/Analysis/CodeInjector.h b/clang-r353983e/include/clang/Analysis/CodeInjector.h
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+//===-- CodeInjector.h ------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// Defines the clang::CodeInjector interface which is responsible for
+/// injecting AST of function definitions that may not be available in the
+/// original source.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_ANALYSIS_CODEINJECTOR_H
+#define LLVM_CLANG_ANALYSIS_CODEINJECTOR_H
+
+namespace clang {
+
+class Stmt;
+class FunctionDecl;
+class ObjCMethodDecl;
+
+/// CodeInjector is an interface which is responsible for injecting AST
+/// of function definitions that may not be available in the original source.
+///
+/// The getBody function will be called each time the static analyzer examines a
+/// function call that has no definition available in the current translation
+/// unit. If the returned statement is not a null pointer, it is assumed to be
+/// the body of a function which will be used for the analysis. The source of
+/// the body can be arbitrary, but it is advised to use memoization to avoid
+/// unnecessary reparsing of the external source that provides the body of the
+/// functions.
+class CodeInjector {
+public:
+  CodeInjector();
+  virtual ~CodeInjector();
+
+  virtual Stmt *getBody(const FunctionDecl *D) = 0;
+  virtual Stmt *getBody(const ObjCMethodDecl *D) = 0;
+};
+}
+
+#endif