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//===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include <vector>
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/iterator_range.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
template <class T, class Fn>
auto map_range(const T &range, Fn fn)
-> decltype(make_range(map_iterator(range.begin(), fn),
map_iterator(range.end(), fn))) {
return make_range(map_iterator(range.begin(), fn),
map_iterator(range.end(), fn));
}
static char add1(char C) { return C + 1; }
TEST(MappedIterator, FnTest) {
std::string S("abc");
std::string T;
for (char C : map_range(S, add1)) {
T.push_back(C);
}
EXPECT_STREQ("bcd", T.c_str());
}
TEST(MappedIterator, LambdaTest) {
std::string S("abc");
std::string T;
for (char C : map_range(S, [](char C) { return C + 1; })) {
T.push_back(C);
}
EXPECT_STREQ("bcd", T.c_str());
}
}
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