llvm-project/lldb/source/Utility/NameMatches.cpp
Pavel Labath c4a3395103 Fix a couple of corner cases in NameMatches
Summary:
I originally set out to move the NameMatches closer to the relevant
function and add some unit tests. However, in the process I've found a
couple of bugs in the implementation:
- the early exits where not always correct:
  - (test==pattern) does not mean the match will always suceed because
    of regular expressions
  - pattern.empty() does not mean the match will fail because the "" is
    a valid prefix of any string

So I cleaned up those and added some tests. The only tricky part here
was that regcomp() implementation on darwin did not recognise the empty
string as a regular expression and returned an REG_EMPTY error instead.
The simples fix here seemed to be to replace the empty expression with
an equivalent non-empty one.

Reviewers: clayborg, zturner

Subscribers: mgorny, lldb-commits

Differential Revision: https://reviews.llvm.org/D30094

llvm-svn: 295651
2017-02-20 11:35:33 +00:00

36 lines
1.0 KiB
C++

//===-- NameMatches.cpp -----------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Utility/NameMatches.h"
#include "lldb/Utility/RegularExpression.h"
#include "llvm/ADT/StringRef.h"
using namespace lldb_private;
bool lldb_private::NameMatches(llvm::StringRef name, NameMatch match_type,
llvm::StringRef match) {
switch (match_type) {
case NameMatch::Ignore:
return true;
case NameMatch::Equals:
return name == match;
case NameMatch::Contains:
return name.contains(match);
case NameMatch::StartsWith:
return name.startswith(match);
case NameMatch::EndsWith:
return name.endswith(match);
case NameMatch::RegularExpression: {
RegularExpression regex(match);
return regex.Execute(name);
}
}
return false;
}