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//===---- 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;
}
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