llvm/clang-tools-extra/clang-tidy/objc/NSDateFormatterCheck.cpp

//===--- NSDateFormatterCheck.cpp - clang-tidy ----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "NSDateFormatterCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/ASTMatchers/ASTMatchers.h"

usingnamespaceclang::ast_matchers;

namespace clang::tidy::objc {

void NSDateFormatterCheck::registerMatchers(MatchFinder *Finder) { … }

static char ValidDatePatternChars[] = …;

// Checks if the string pattern used as a date format specifier is valid.
// A string pattern is valid if all the letters(a-z, A-Z) in it belong to the
// set of reserved characters. See:
// https://www.unicode.org/reports/tr35/tr35.html#Invalid_Patterns
bool isValidDatePattern(StringRef Pattern) { … }

// Checks if the string pattern used as a date format specifier contains
// any incorrect pattern and reports it as a warning.
// See: http://www.unicode.org/reports/tr35/tr35-dates.html#Date_Format_Patterns
void NSDateFormatterCheck::check(const MatchFinder::MatchResult &Result) { … }

} // namespace clang::tidy::objc