File Manager

003 File Manager

Current Path: /usr/src/contrib/llvm-project/clang/lib/Analysis

usr / src / contrib / llvm-project / clang / lib / Analysis /

📁 ..
📄 AnalysisDeclContext.cpp(20.62 KB)
📄 BodyFarm.cpp(30.09 KB)
📄 CFG.cpp(199.8 KB)
📄 CFGReachabilityAnalysis.cpp(2.55 KB)
📄 CFGStmtMap.cpp(2.37 KB)
📄 CallGraph.cpp(7.69 KB)
📄 CloneDetection.cpp(22.11 KB)
📄 CocoaConventions.cpp(4.49 KB)
📄 CodeInjector.cpp(501 B)
📄 ConstructionContext.cpp(9.16 KB)
📄 Consumed.cpp(43.16 KB)
📄 Dominators.cpp(611 B)
📄 ExprMutationAnalyzer.cpp(19.82 KB)
📄 LiveVariables.cpp(20.74 KB)
📄 ObjCNoReturn.cpp(1.95 KB)
📄 PathDiagnostic.cpp(42.18 KB)
📄 PostOrderCFGView.cpp(1.74 KB)
📄 ProgramPoint.cpp(7.59 KB)
📄 ReachableCode.cpp(24.67 KB)
📄 RetainSummaryManager.cpp(47.54 KB)
📄 ThreadSafety.cpp(91.72 KB)
📄 ThreadSafetyCommon.cpp(33.56 KB)
📄 ThreadSafetyLogical.cpp(4.1 KB)
📄 ThreadSafetyTIL.cpp(11.12 KB)
📄 UninitializedValues.cpp(31.88 KB)
📁 plugins

Editing: CocoaConventions.cpp

//===- CocoaConventions.h - Special handling of Cocoa conventions -*- 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 implements cocoa naming convention analysis.
//
//===----------------------------------------------------------------------===//

#include "clang/Analysis/DomainSpecific/CocoaConventions.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/Type.h"
#include "clang/Basic/CharInfo.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/ErrorHandling.h"

using namespace clang;
using namespace ento;

bool cocoa::isRefType(QualType RetTy, StringRef Prefix,
                      StringRef Name) {
  // Recursively walk the typedef stack, allowing typedefs of reference types.
  while (const TypedefType *TD = RetTy->getAs<TypedefType>()) {
    StringRef TDName = TD->getDecl()->getIdentifier()->getName();
    if (TDName.startswith(Prefix) && TDName.endswith("Ref"))
      return true;
    // XPC unfortunately uses CF-style function names, but aren't CF types.
    if (TDName.startswith("xpc_"))
      return false;
    RetTy = TD->getDecl()->getUnderlyingType();
  }

if (Name.empty())
    return false;

// Is the type void*?
  const PointerType* PT = RetTy->castAs<PointerType>();
  if (!PT || !PT->getPointeeType().getUnqualifiedType()->isVoidType())
    return false;

// Does the name start with the prefix?
  return Name.startswith(Prefix);
}

/// Returns true when the passed-in type is a CF-style reference-counted
/// type from the DiskArbitration framework.
static bool isDiskArbitrationAPIRefType(QualType T) {
  return cocoa::isRefType(T, "DADisk") ||
      cocoa::isRefType(T, "DADissenter") ||
      cocoa::isRefType(T, "DASessionRef");
}

bool coreFoundation::isCFObjectRef(QualType T) {
  return cocoa::isRefType(T, "CF") || // Core Foundation.
         cocoa::isRefType(T, "CG") || // Core Graphics.
         cocoa::isRefType(T, "CM") || // Core Media.
         isDiskArbitrationAPIRefType(T);
}

bool cocoa::isCocoaObjectRef(QualType Ty) {
  if (!Ty->isObjCObjectPointerType())
    return false;

const ObjCObjectPointerType *PT = Ty->getAs<ObjCObjectPointerType>();

// Can be true for objects with the 'NSObject' attribute.
  if (!PT)
    return true;

// We assume that id<..>, id, Class, and Class<..> all represent tracked
  // objects.
  if (PT->isObjCIdType() || PT->isObjCQualifiedIdType() ||
      PT->isObjCClassType() || PT->isObjCQualifiedClassType())
    return true;

// Does the interface subclass NSObject?
  // FIXME: We can memoize here if this gets too expensive.
  const ObjCInterfaceDecl *ID = PT->getInterfaceDecl();

// Assume that anything declared with a forward declaration and no
  // @interface subclasses NSObject.
  if (!ID->hasDefinition())
    return true;

for ( ; ID ; ID = ID->getSuperClass())
    if (ID->getIdentifier()->getName() == "NSObject")
      return true;

return false;
}

bool coreFoundation::followsCreateRule(const FunctionDecl *fn) {
  // For now, *just* base this on the function name, not on anything else.

const IdentifierInfo *ident = fn->getIdentifier();
  if (!ident) return false;
  StringRef functionName = ident->getName();

StringRef::iterator it = functionName.begin();
  StringRef::iterator start = it;
  StringRef::iterator endI = functionName.end();

while (true) {
    // Scan for the start of 'create' or 'copy'.
    for ( ; it != endI ; ++it) {
      // Search for the first character.  It can either be 'C' or 'c'.
      char ch = *it;
      if (ch == 'C' || ch == 'c') {
        // Make sure this isn't something like 'recreate' or 'Scopy'.
        if (ch == 'c' && it != start && isLetter(*(it - 1)))
          continue;

++it;
        break;
      }
    }

// Did we hit the end of the string?  If so, we didn't find a match.
    if (it == endI)
      return false;

// Scan for *lowercase* 'reate' or 'opy', followed by no lowercase
    // character.
    StringRef suffix = functionName.substr(it - start);
    if (suffix.startswith("reate")) {
      it += 5;
    }
    else if (suffix.startswith("opy")) {
      it += 3;
    } else {
      // Keep scanning.
      continue;
    }

if (it == endI || !isLowercase(*it))
      return true;

// If we matched a lowercase character, it isn't the end of the
    // word.  Keep scanning.
  }
}

003 File Manager

Editing: CocoaConventions.cpp

Upload File

Create Folder