OptionUtils.cpp revision 360784 
1//===--- OptionUtils.cpp - Utilities for command line arguments -----------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "clang/Basic/Diagnostic.h"
10#include "clang/Basic/DiagnosticDriver.h"
11#include "clang/Driver/OptionUtils.h"
12#include "llvm/Option/ArgList.h"
13
14using namespace clang;
15using namespace llvm::opt;
16
17namespace {
18template <typename IntTy>
19IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
20                             IntTy Default, DiagnosticsEngine *Diags,
21                             unsigned Base) {
22  IntTy Res = Default;
23  if (Arg *A = Args.getLastArg(Id)) {
24    if (StringRef(A->getValue()).getAsInteger(Base, Res)) {
25      if (Diags)
26        Diags->Report(diag::err_drv_invalid_int_value)
27            << A->getAsString(Args) << A->getValue();
28    }
29  }
30  return Res;
31}
32} // namespace
33
34namespace clang {
35
36int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
37                       DiagnosticsEngine *Diags, unsigned Base) {
38  return getLastArgIntValueImpl<int>(Args, Id, Default, Diags, Base);
39}
40
41uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
42                               uint64_t Default, DiagnosticsEngine *Diags,
43                               unsigned Base) {
44  return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags, Base);
45}
46
47} // namespace clang
48