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//===--- SemaUtil.h - Utility functions for semantic analysis -------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Ted Kremenek and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides a few static inline functions that are useful for
// performing semantic analysis.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_SEMA_UTIL_H
#define LLVM_CLANG_SEMA_UTIL_H
#include "clang/AST/Expr.h"
namespace clang {
/// Utility method to plow through parentheses to get the first nested
/// non-ParenExpr expr.
static inline Expr* IgnoreParen(Expr* E) {
while (ParenExpr* P = dyn_cast<ParenExpr>(E))
E = P->getSubExpr();
return E;
}
/// Utility method to plow through parenthesis and casts.
static inline Expr* IgnoreParenCasts(Expr* E) {
while(true) {
if (ParenExpr* P = dyn_cast<ParenExpr>(E))
E = P->getSubExpr();
else if (CastExpr* P = dyn_cast<CastExpr>(E))
E = P->getSubExpr();
else if (ImplicitCastExpr* P = dyn_cast<ImplicitCastExpr>(E))
E = P->getSubExpr();
else
break;
}
return E;
}
/// Utility method to determine if a CallExpr is a call to a builtin.
static inline bool isCallBuiltin(CallExpr* cexp) {
Expr* sub = IgnoreParenCasts(cexp->getCallee());
if (DeclRefExpr* E = dyn_cast<DeclRefExpr>(sub))
if (E->getDecl()->getIdentifier()->getBuiltinID() > 0)
return true;
return false;
}
} // end namespace clang
#endif
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