clang-tools  10.0.0
GlobList.cpp
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1 //===--- tools/extra/clang-tidy/GlobList.cpp ------------------------------===//
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 "GlobList.h"
10 #include "llvm/ADT/SmallString.h"
11 
12 using namespace clang;
13 using namespace tidy;
14 
15 // Returns true if GlobList starts with the negative indicator ('-'), removes it
16 // from the GlobList.
17 static bool ConsumeNegativeIndicator(StringRef &GlobList) {
18  GlobList = GlobList.trim(" \r\n");
19  if (GlobList.startswith("-")) {
20  GlobList = GlobList.substr(1);
21  return true;
22  }
23  return false;
24 }
25 
26 // Converts first glob from the comma-separated list of globs to Regex and
27 // removes it and the trailing comma from the GlobList.
28 static llvm::Regex ConsumeGlob(StringRef &GlobList) {
29  StringRef UntrimmedGlob = GlobList.substr(0, GlobList.find(','));
30  StringRef Glob = UntrimmedGlob.trim(' ');
31  GlobList = GlobList.substr(UntrimmedGlob.size() + 1);
32  SmallString<128> RegexText("^");
33  StringRef MetaChars("()^$|*+?.[]\\{}");
34  for (char C : Glob) {
35  if (C == '*')
36  RegexText.push_back('.');
37  else if (MetaChars.find(C) != StringRef::npos)
38  RegexText.push_back('\\');
39  RegexText.push_back(C);
40  }
41  RegexText.push_back('$');
42  return llvm::Regex(RegexText);
43 }
44 
45 GlobList::GlobList(StringRef Globs) {
46  do {
47  GlobListItem Item;
48  Item.IsPositive = !ConsumeNegativeIndicator(Globs);
49  Item.Regex = ConsumeGlob(Globs);
50  Items.push_back(std::move(Item));
51  } while (!Globs.empty());
52 }
53 
54 bool GlobList::contains(StringRef S) {
55  bool Contains = false;
56  for (const GlobListItem &Item : Items) {
57  if (Item.Regex.match(S))
58  Contains = Item.IsPositive;
59  }
60  return Contains;
61 }
Read-only set of strings represented as a list of positive and negative globs.
Definition: GlobList.h:25
static llvm::Regex ConsumeGlob(StringRef &GlobList)
Definition: GlobList.cpp:28
GlobList(StringRef Globs)
Globs is a comma-separated list of globs (only the &#39;*&#39; metacharacter is supported) with an optional &#39;...
Definition: GlobList.cpp:45
static bool ConsumeNegativeIndicator(StringRef &GlobList)
Definition: GlobList.cpp:17
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
bool contains(StringRef S)
Returns true if the pattern matches S.
Definition: GlobList.cpp:54