| //===---- 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/GR/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; |
| } |