70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
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//===-- ModelInjector.h -----------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// This file defines the clang::ento::ModelInjector class which implements the
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/// clang::CodeInjector interface. This class is responsible for injecting
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/// function definitions that were synthesized from model files.
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///
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/// Model files allow definitions of functions to be lazily constituted for functions
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/// which lack bodies in the original source code. This allows the analyzer
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/// to more precisely analyze code that calls such functions, analyzing the
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/// artificial definitions (which typically approximate the semantics of the
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/// called function) when called by client code. These definitions are
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/// reconstituted lazily, on-demand, by the static analyzer engine.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_SA_FRONTEND_MODELINJECTOR_H
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#define LLVM_CLANG_SA_FRONTEND_MODELINJECTOR_H
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#include "clang/Analysis/CodeInjector.h"
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#include "llvm/ADT/StringMap.h"
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namespace clang {
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class CompilerInstance;
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class ASTUnit;
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class ASTReader;
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class NamedDecl;
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class Module;
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namespace ento {
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class ModelInjector : public CodeInjector {
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public:
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ModelInjector(CompilerInstance &CI);
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Stmt *getBody(const FunctionDecl *D) override;
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Stmt *getBody(const ObjCMethodDecl *D) override;
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private:
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/// Synthesize a body for a declaration
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///
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/// This method first looks up the appropriate model file based on the
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/// model-path configuration option and the name of the declaration that is
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/// looked up. If no model were synthesized yet for a function with that name
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/// it will create a new compiler instance to parse the model file using the
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/// ASTContext, Preprocessor, SourceManager of the original compiler instance.
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/// The former resources are shared between the two compiler instance, so the
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/// newly created instance have to "leak" these objects, since they are owned
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/// by the original instance.
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///
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/// The model-path should be either an absolute path or relative to the
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/// working directory of the compiler.
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void onBodySynthesis(const NamedDecl *D);
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CompilerInstance &CI;
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// FIXME: double memoization is redundant, with memoization both here and in
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// BodyFarm.
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llvm::StringMap<Stmt *> Bodies;
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};
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}
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}
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#endif
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