1 files changed, 80 insertions, 0 deletions
diff --git a/clang/lib/StaticAnalyzer/Core/CheckerHelpers.cpp b/clang/lib/StaticAnalyzer/Core/CheckerHelpers.cpp
new file mode 100644
index 0000000..28df695
--- /dev/null
+++ b/clang/lib/StaticAnalyzer/Core/CheckerHelpers.cpp
@@ -0,0 +1,80 @@
+//===---- CheckerHelpers.cpp - Helper functions for checkers ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines several static functions for use in checkers.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerHelpers.h"
+#include "clang/AST/Expr.h"
+
+// Recursively find any substatements containing macros
+bool clang::ento::containsMacro(const Stmt *S) {
+  if (S->getLocStart().isMacroID())
+    return true;
+
+  if (S->getLocEnd().isMacroID())
+    return true;
+
+  for (Stmt::const_child_iterator I = S->child_begin(); I != S->child_end();
+      ++I)
+    if (const Stmt *child = *I)
+      if (containsMacro(child))
+        return true;
+
+  return false;
+}
+
+// Recursively find any substatements containing enum constants
+bool clang::ento::containsEnum(const Stmt *S) {
+  const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(S);
+
+  if (DR && isa<EnumConstantDecl>(DR->getDecl()))
+    return true;
+
+  for (Stmt::const_child_iterator I = S->child_begin(); I != S->child_end();
+      ++I)
+    if (const Stmt *child = *I)
+      if (containsEnum(child))
+        return true;
+
+  return false;
+}
+
+// Recursively find any substatements containing static vars
+bool clang::ento::containsStaticLocal(const Stmt *S) {
+  const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(S);
+
+  if (DR)
+    if (const VarDecl *VD = dyn_cast<VarDecl>(DR->getDecl()))
+      if (VD->isStaticLocal())
+        return true;
+
+  for (Stmt::const_child_iterator I = S->child_begin(); I != S->child_end();
+      ++I)
+    if (const Stmt *child = *I)
+      if (containsStaticLocal(child))
+        return true;
+
+  return false;
+}
+
+// Recursively find any substatements containing __builtin_offsetof
+bool clang::ento::containsBuiltinOffsetOf(const Stmt *S) {
+  if (isa<OffsetOfExpr>(S))
+    return true;
+
+  for (Stmt::const_child_iterator I = S->child_begin(); I != S->child_end();
+      ++I)
+    if (const Stmt *child = *I)
+      if (containsBuiltinOffsetOf(child))
+        return true;
+
+  return false;
+}