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//== CheckerHelpers.h - Helper functions for checkers ------------*- 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
//
//===----------------------------------------------------------------------===//
//
// This file defines CheckerVisitor.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_CHECKERHELPERS_H
#define LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_CHECKERHELPERS_H
#include "clang/AST/Stmt.h"
#include <tuple>
namespace clang {
class Expr;
class VarDecl;
class QualType;
class AttributedType;
namespace ento {
bool containsMacro(const Stmt *S);
bool containsEnum(const Stmt *S);
bool containsStaticLocal(const Stmt *S);
bool containsBuiltinOffsetOf(const Stmt *S);
template <class T> bool containsStmt(const Stmt *S) {
if (isa<T>(S))
return true;
for (const Stmt *Child : S->children())
if (Child && containsStmt<T>(Child))
return true;
return false;
}
std::pair<const clang::VarDecl *, const clang::Expr *>
parseAssignment(const Stmt *S);
// Do not reorder! The getMostNullable method relies on the order.
// Optimization: Most pointers expected to be unspecified. When a symbol has an
// unspecified or nonnull type non of the rules would indicate any problem for
// that symbol. For this reason only nullable and contradicted nullability are
// stored for a symbol. When a symbol is already contradicted, it can not be
// casted back to nullable.
enum class Nullability : char {
Contradicted, // Tracked nullability is contradicted by an explicit cast. Do
// not report any nullability related issue for this symbol.
// This nullability is propagated aggressively to avoid false
// positive results. See the comment on getMostNullable method.
Nullable,
Unspecified,
Nonnull
};
/// Get nullability annotation for a given type.
Nullability getNullabilityAnnotation(QualType Type);
} // end GR namespace
} // end clang namespace
#endif
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