File: use_system_re2.patch

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qtwebengine-opensource-src 5.7.1%2Bdfsg-6.1
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--- a/src/3rdparty/chromium/third_party/re2/src/re2/re2.h
+++ b/src/3rdparty/chromium/third_party/re2/src/re2/re2.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#ifndef RE2_RE2_H
-#define RE2_RE2_H
+#ifndef RE2_RE2_H_
+#define RE2_RE2_H_
 
 // C++ interface to the re2 regular-expression library.
 // RE2 supports Perl-style regular expressions (with extensions like
@@ -179,38 +179,25 @@
 //         RE2::Octal(&a), RE2::Hex(&b), RE2::CRadix(&c), RE2::CRadix(&d));
 // will leave 64 in a, b, c, and d.
 
+#include <stddef.h>
 #include <stdint.h>
+#include <sys/types.h>
+#include <algorithm>
 #include <map>
+#include <mutex>
 #include <string>
-#include "re2/stringpiece.h"
-#include "re2/variadic_function.h"
 
-#ifndef RE2_HAVE_LONGLONG
-#define RE2_HAVE_LONGLONG 1
-#endif
+#include "re2/stringpiece.h"
 
 namespace re2 {
-
-using std::string;
-using std::map;
-class Mutex;
 class Prog;
 class Regexp;
+}  // namespace re2
+
+namespace re2 {
 
-// The following enum should be used only as a constructor argument to indicate
-// that the variable has static storage class, and that the constructor should
-// do nothing to its state.  It indicates to the reader that it is legal to
-// declare a static instance of the class, provided the constructor is given
-// the LINKER_INITIALIZED argument.  Normally, it is unsafe to declare a
-// static variable that has a constructor or a destructor because invocation
-// order is undefined.  However, IF the type can be initialized by filling with
-// zeroes (which the loader does for static variables), AND the type's
-// destructor does nothing to the storage, then a constructor for static
-// initialization can be declared as
-//       explicit MyClass(LinkerInitialized x) {}
-// and invoked as
-//       static MyClass my_variable_name(LINKER_INITIALIZED);
-enum LinkerInitialized { LINKER_INITIALIZED };
+// TODO(junyer): Get rid of this.
+using std::string;
 
 // Interface for regular expression matching.  Also corresponds to a
 // pre-compiled regular expression.  An "RE2" object is safe for
@@ -266,7 +253,7 @@ class RE2 {
   RE2(const string& pattern);
 #endif
   RE2(const StringPiece& pattern);
-  RE2(const StringPiece& pattern, const Options& option);
+  RE2(const StringPiece& pattern, const Options& options);
   ~RE2();
 
   // Returns whether RE2 was created properly.
@@ -296,7 +283,7 @@ class RE2 {
   // EXPERIMENTAL! SUBJECT TO CHANGE!
   // Outputs the program fanout as a histogram bucketed by powers of 2.
   // Returns the number of the largest non-empty bucket.
-  int ProgramFanout(map<int, int>* histogram) const;
+  int ProgramFanout(std::map<int, int>* histogram) const;
 
   // Returns the underlying Regexp; not for general use.
   // Returns entire_regexp_ so that callers don't need
@@ -305,21 +292,21 @@ class RE2 {
 
   /***** The useful part: the matching interface *****/
 
-  // Matches "text" against "pattern".  If pointer arguments are
+  // Matches "text" against "re".  If pointer arguments are
   // supplied, copies matched sub-patterns into them.
   //
   // You can pass in a "const char*" or a "string" for "text".
-  // You can pass in a "const char*" or a "string" or a "RE2" for "pattern".
+  // You can pass in a "const char*" or a "string" or a "RE2" for "re".
   //
   // The provided pointer arguments can be pointers to any scalar numeric
   // type, or one of:
   //    string          (matched piece is copied to string)
   //    StringPiece     (StringPiece is mutated to point to matched piece)
-  //    T               (where "bool T::ParseFrom(const char*, int)" exists)
+  //    T               (where "bool T::ParseFrom(const char*, size_t)" exists)
   //    (void*)NULL     (the corresponding matched sub-pattern is not copied)
   //
   // Returns true iff all of the following conditions are satisfied:
-  //   a. "text" matches "pattern" exactly
+  //   a. "text" matches "re" exactly
   //   b. The number of matched sub-patterns is >= number of supplied pointers
   //   c. The "i"th argument has a suitable type for holding the
   //      string captured as the "i"th sub-pattern.  If you pass in
@@ -335,32 +322,65 @@ class RE2 {
   //    RE2::FullMatch("abc", "[a-z]+(\\d+)?", &number);
   static bool FullMatchN(const StringPiece& text, const RE2& re,
                          const Arg* const args[], int argc);
-  static const VariadicFunction2<
-      bool, const StringPiece&, const RE2&, Arg, RE2::FullMatchN> FullMatch;
 
-  // Exactly like FullMatch(), except that "pattern" is allowed to match
+  // Exactly like FullMatch(), except that "re" is allowed to match
   // a substring of "text".
-  static bool PartialMatchN(const StringPiece& text, const RE2& re, // 3..16 args
+  static bool PartialMatchN(const StringPiece& text, const RE2& re,
                             const Arg* const args[], int argc);
-  static const VariadicFunction2<
-      bool, const StringPiece&, const RE2&, Arg, RE2::PartialMatchN> PartialMatch;
 
-  // Like FullMatch() and PartialMatch(), except that pattern has to
-  // match a prefix of "text", and "input" is advanced past the matched
+  // Like FullMatch() and PartialMatch(), except that "re" has to match
+  // a prefix of the text, and "input" is advanced past the matched
   // text.  Note: "input" is modified iff this routine returns true.
-  static bool ConsumeN(StringPiece* input, const RE2& pattern, // 3..16 args
+  static bool ConsumeN(StringPiece* input, const RE2& re,
                        const Arg* const args[], int argc);
-  static const VariadicFunction2<
-      bool, StringPiece*, const RE2&, Arg, RE2::ConsumeN> Consume;
 
-  // Like Consume(..), but does not anchor the match at the beginning of the
-  // string.  That is, "pattern" need not start its match at the beginning of
-  // "input".  For example, "FindAndConsume(s, "(\\w+)", &word)" finds the next
-  // word in "s" and stores it in "word".
-  static bool FindAndConsumeN(StringPiece* input, const RE2& pattern,
-                             const Arg* const args[], int argc);
-  static const VariadicFunction2<
-      bool, StringPiece*, const RE2&, Arg, RE2::FindAndConsumeN> FindAndConsume;
+  // Like Consume(), but does not anchor the match at the beginning of
+  // the text.  That is, "re" need not start its match at the beginning
+  // of "input".  For example, "FindAndConsume(s, "(\\w+)", &word)" finds
+  // the next word in "s" and stores it in "word".
+  static bool FindAndConsumeN(StringPiece* input, const RE2& re,
+                              const Arg* const args[], int argc);
+
+#ifndef SWIG
+ private:
+  template <typename F, typename SP>
+  static inline bool Apply(F f, SP sp, const RE2& re) {
+    return f(sp, re, NULL, 0);
+  }
+
+  template <typename F, typename SP, typename... A>
+  static inline bool Apply(F f, SP sp, const RE2& re, const A&... a) {
+    const Arg* const args[] = {&a...};
+    const int argc = sizeof...(a);
+    return f(sp, re, args, argc);
+  }
+
+ public:
+  // In order to allow FullMatch() et al. to be called with a varying number
+  // of arguments of varying types, we use two layers of variadic templates.
+  // The first layer constructs the temporary Arg objects. The second layer
+  // (above) constructs the array of pointers to the temporary Arg objects.
+
+  template <typename... A>
+  static bool FullMatch(const StringPiece& text, const RE2& re, A&&... a) {
+    return Apply(FullMatchN, text, re, Arg(std::forward<A>(a))...);
+  }
+
+  template <typename... A>
+  static bool PartialMatch(const StringPiece& text, const RE2& re, A&&... a) {
+    return Apply(PartialMatchN, text, re, Arg(std::forward<A>(a))...);
+  }
+
+  template <typename... A>
+  static bool Consume(StringPiece* input, const RE2& re, A&&... a) {
+    return Apply(ConsumeN, input, re, Arg(std::forward<A>(a))...);
+  }
+
+  template <typename... A>
+  static bool FindAndConsume(StringPiece* input, const RE2& re, A&&... a) {
+    return Apply(FindAndConsumeN, input, re, Arg(std::forward<A>(a))...);
+  }
+#endif
 
   // Replace the first match of "pattern" in "str" with "rewrite".
   // Within "rewrite", backslash-escaped digits (\1 to \9) can be
@@ -451,12 +471,12 @@ class RE2 {
   // The map records the index of the leftmost group
   // with the given name.
   // Only valid until the re is deleted.
-  const map<string, int>& NamedCapturingGroups() const;
+  const std::map<string, int>& NamedCapturingGroups() const;
 
   // Return a map from capturing indices to names.
   // The map has no entries for unnamed groups.
   // Only valid until the re is deleted.
-  const map<int, string>& CapturingGroupNames() const;
+  const std::map<int, string>& CapturingGroupNames() const;
 
   // General matching routine.
   // Match against text starting at offset startpos
@@ -465,8 +485,8 @@ class RE2 {
   // On a successful match, fills in match[] (up to nmatch entries)
   // with information about submatches.
   // I.e. matching RE2("(foo)|(bar)baz") on "barbazbla" will return true,
-  // setting match[0] = "barbaz", match[1] = NULL, match[2] = "bar",
-  // match[3] = NULL, ..., up to match[nmatch-1] = NULL.
+  // setting match[0] = "barbaz", match[1].data() = NULL, match[2] = "bar",
+  // match[3].data() = NULL, ..., up to match[nmatch-1].data() = NULL.
   //
   // Don't ask for more match information than you will use:
   // runs much faster with nmatch == 1 than nmatch > 1, and
@@ -477,10 +497,10 @@ class RE2 {
   // Passing text == StringPiece(NULL, 0) will be handled like any other
   // empty string, but note that on return, it will not be possible to tell
   // whether submatch i matched the empty string or did not match:
-  // either way, match[i] == NULL.
+  // either way, match[i].data() == NULL.
   bool Match(const StringPiece& text,
-             int startpos,
-             int endpos,
+             size_t startpos,
+             size_t endpos,
              Anchor anchor,
              StringPiece *match,
              int nmatch) const;
@@ -638,19 +658,7 @@ class RE2 {
     void set_one_line(bool b) { one_line_ = b; }
 
     void Copy(const Options& src) {
-      encoding_ = src.encoding_;
-      posix_syntax_ = src.posix_syntax_;
-      longest_match_ = src.longest_match_;
-      log_errors_ = src.log_errors_;
-      max_mem_ = src.max_mem_;
-      literal_ = src.literal_;
-      never_nl_ = src.never_nl_;
-      dot_nl_ = src.dot_nl_;
-      never_capture_ = src.never_capture_;
-      case_sensitive_ = src.case_sensitive_;
-      perl_classes_ = src.perl_classes_;
-      word_boundary_ = src.word_boundary_;
-      one_line_ = src.one_line_;
+      *this = src;
     }
 
     int ParseFlags() const;
@@ -669,10 +677,6 @@ class RE2 {
     bool perl_classes_;
     bool word_boundary_;
     bool one_line_;
-
-    //DISALLOW_COPY_AND_ASSIGN(Options);
-    Options(const Options&);
-    void operator=(const Options&);
   };
 
   // Returns the options set in the constructor.
@@ -685,10 +689,8 @@ class RE2 {
   static inline Arg CRadix(unsigned int* x);
   static inline Arg CRadix(long* x);
   static inline Arg CRadix(unsigned long* x);
-  #if RE2_HAVE_LONGLONG
   static inline Arg CRadix(long long* x);
   static inline Arg CRadix(unsigned long long* x);
-  #endif
 
   static inline Arg Hex(short* x);
   static inline Arg Hex(unsigned short* x);
@@ -696,10 +698,8 @@ class RE2 {
   static inline Arg Hex(unsigned int* x);
   static inline Arg Hex(long* x);
   static inline Arg Hex(unsigned long* x);
-  #if RE2_HAVE_LONGLONG
   static inline Arg Hex(long long* x);
   static inline Arg Hex(unsigned long long* x);
-  #endif
 
   static inline Arg Octal(short* x);
   static inline Arg Octal(unsigned short* x);
@@ -707,47 +707,50 @@ class RE2 {
   static inline Arg Octal(unsigned int* x);
   static inline Arg Octal(long* x);
   static inline Arg Octal(unsigned long* x);
-  #if RE2_HAVE_LONGLONG
   static inline Arg Octal(long long* x);
   static inline Arg Octal(unsigned long long* x);
-  #endif
 
  private:
   void Init(const StringPiece& pattern, const Options& options);
 
   bool DoMatch(const StringPiece& text,
-                   Anchor anchor,
-                   int* consumed,
-                   const Arg* const args[],
-                   int n) const;
+               Anchor anchor,
+               size_t* consumed,
+               const Arg* const args[],
+               int n) const;
 
   re2::Prog* ReverseProg() const;
 
-  mutable Mutex*           mutex_;
-  string                   pattern_;       // string regular expression
-  Options                  options_;       // option flags
+  string        pattern_;          // string regular expression
+  Options       options_;          // option flags
   string        prefix_;           // required prefix (before regexp_)
   bool          prefix_foldcase_;  // prefix is ASCII case-insensitive
   re2::Regexp*  entire_regexp_;    // parsed regular expression
   re2::Regexp*  suffix_regexp_;    // parsed regular expression, prefix removed
   re2::Prog*    prog_;             // compiled program for regexp
-  mutable re2::Prog* rprog_;       // reverse program for regexp
-  bool                     is_one_pass_;   // can use prog_->SearchOnePass?
-  mutable const string*    error_;         // Error indicator
-                                           // (or points to empty string)
-  mutable ErrorCode        error_code_;    // Error code
-  mutable string           error_arg_;     // Fragment of regexp showing error
-  mutable int              num_captures_;  // Number of capturing groups
+  bool          is_one_pass_;      // can use prog_->SearchOnePass?
+
+  mutable re2::Prog*     rprog_;         // reverse program for regexp
+  mutable const string*  error_;         // Error indicator
+                                         // (or points to empty string)
+  mutable ErrorCode      error_code_;    // Error code
+  mutable string         error_arg_;     // Fragment of regexp showing error
+  mutable int            num_captures_;  // Number of capturing groups
 
   // Map from capture names to indices
-  mutable const map<string, int>* named_groups_;
+  mutable const std::map<string, int>* named_groups_;
 
   // Map from capture indices to names
-  mutable const map<int, string>* group_names_;
+  mutable const std::map<int, string>* group_names_;
+
+  // Onces for lazy computations.
+  mutable std::once_flag rprog_once_;
+  mutable std::once_flag num_captures_once_;
+  mutable std::once_flag named_groups_once_;
+  mutable std::once_flag group_names_once_;
 
-  //DISALLOW_COPY_AND_ASSIGN(RE2);
-  RE2(const RE2&);
-  void operator=(const RE2&);
+  RE2(const RE2&) = delete;
+  RE2& operator=(const RE2&) = delete;
 };
 
 /***** Implementation details *****/
@@ -758,7 +761,7 @@ class RE2 {
 template <class T>
 class _RE2_MatchObject {
  public:
-  static inline bool Parse(const char* str, int n, void* dest) {
+  static inline bool Parse(const char* str, size_t n, void* dest) {
     if (dest == NULL) return true;
     T* object = reinterpret_cast<T*>(dest);
     return object->ParseFrom(str, n);
@@ -773,31 +776,29 @@ class RE2::Arg {
   // Constructor specially designed for NULL arguments
   Arg(void*);
 
-  typedef bool (*Parser)(const char* str, int n, void* dest);
+  typedef bool (*Parser)(const char* str, size_t n, void* dest);
 
 // Type-specific parsers
-#define MAKE_PARSER(type,name) \
-  Arg(type* p) : arg_(p), parser_(name) { } \
-  Arg(type* p, Parser parser) : arg_(p), parser_(parser) { } \
-
+#define MAKE_PARSER(type, name)            \
+  Arg(type* p) : arg_(p), parser_(name) {} \
+  Arg(type* p, Parser parser) : arg_(p), parser_(parser) {}
 
   MAKE_PARSER(char,               parse_char);
-  MAKE_PARSER(signed char,        parse_char);
+  MAKE_PARSER(signed char,        parse_schar);
   MAKE_PARSER(unsigned char,      parse_uchar);
+  MAKE_PARSER(float,              parse_float);
+  MAKE_PARSER(double,             parse_double);
+  MAKE_PARSER(string,             parse_string);
+  MAKE_PARSER(StringPiece,        parse_stringpiece);
+
   MAKE_PARSER(short,              parse_short);
   MAKE_PARSER(unsigned short,     parse_ushort);
   MAKE_PARSER(int,                parse_int);
   MAKE_PARSER(unsigned int,       parse_uint);
   MAKE_PARSER(long,               parse_long);
   MAKE_PARSER(unsigned long,      parse_ulong);
-  #if RE2_HAVE_LONGLONG
   MAKE_PARSER(long long,          parse_longlong);
   MAKE_PARSER(unsigned long long, parse_ulonglong);
-  #endif
-  MAKE_PARSER(float,              parse_float);
-  MAKE_PARSER(double,             parse_double);
-  MAKE_PARSER(string,             parse_string);
-  MAKE_PARSER(StringPiece,        parse_stringpiece);
 
 #undef MAKE_PARSER
 
@@ -808,29 +809,31 @@ class RE2::Arg {
       : arg_(p), parser_(parser) { }
 
   // Parse the data
-  bool Parse(const char* str, int n) const;
+  bool Parse(const char* str, size_t n) const;
 
  private:
   void*         arg_;
   Parser        parser_;
 
-  static bool parse_null          (const char* str, int n, void* dest);
-  static bool parse_char          (const char* str, int n, void* dest);
-  static bool parse_uchar         (const char* str, int n, void* dest);
-  static bool parse_float         (const char* str, int n, void* dest);
-  static bool parse_double        (const char* str, int n, void* dest);
-  static bool parse_string        (const char* str, int n, void* dest);
-  static bool parse_stringpiece   (const char* str, int n, void* dest);
-
-#define DECLARE_INTEGER_PARSER(name)                                        \
- private:                                                                   \
-  static bool parse_ ## name(const char* str, int n, void* dest);           \
-  static bool parse_ ## name ## _radix(                                     \
-    const char* str, int n, void* dest, int radix);                         \
- public:                                                                    \
-  static bool parse_ ## name ## _hex(const char* str, int n, void* dest);   \
-  static bool parse_ ## name ## _octal(const char* str, int n, void* dest); \
-  static bool parse_ ## name ## _cradix(const char* str, int n, void* dest)
+  static bool parse_null          (const char* str, size_t n, void* dest);
+  static bool parse_char          (const char* str, size_t n, void* dest);
+  static bool parse_schar         (const char* str, size_t n, void* dest);
+  static bool parse_uchar         (const char* str, size_t n, void* dest);
+  static bool parse_float         (const char* str, size_t n, void* dest);
+  static bool parse_double        (const char* str, size_t n, void* dest);
+  static bool parse_string        (const char* str, size_t n, void* dest);
+  static bool parse_stringpiece   (const char* str, size_t n, void* dest);
+
+#define DECLARE_INTEGER_PARSER(name)                                       \
+ private:                                                                  \
+  static bool parse_##name(const char* str, size_t n, void* dest);         \
+  static bool parse_##name##_radix(const char* str, size_t n, void* dest,  \
+                                   int radix);                             \
+                                                                           \
+ public:                                                                   \
+  static bool parse_##name##_hex(const char* str, size_t n, void* dest);   \
+  static bool parse_##name##_octal(const char* str, size_t n, void* dest); \
+  static bool parse_##name##_cradix(const char* str, size_t n, void* dest)
 
   DECLARE_INTEGER_PARSER(short);
   DECLARE_INTEGER_PARSER(ushort);
@@ -838,29 +841,31 @@ class RE2::Arg {
   DECLARE_INTEGER_PARSER(uint);
   DECLARE_INTEGER_PARSER(long);
   DECLARE_INTEGER_PARSER(ulong);
-  #if RE2_HAVE_LONGLONG
   DECLARE_INTEGER_PARSER(longlong);
   DECLARE_INTEGER_PARSER(ulonglong);
-  #endif
 
 #undef DECLARE_INTEGER_PARSER
+
 };
 
 inline RE2::Arg::Arg() : arg_(NULL), parser_(parse_null) { }
 inline RE2::Arg::Arg(void* p) : arg_(p), parser_(parse_null) { }
 
-inline bool RE2::Arg::Parse(const char* str, int n) const {
+inline bool RE2::Arg::Parse(const char* str, size_t n) const {
   return (*parser_)(str, n, arg_);
 }
 
 // This part of the parser, appropriate only for ints, deals with bases
-#define MAKE_INTEGER_PARSER(type, name) \
-  inline RE2::Arg RE2::Hex(type* ptr) { \
-    return RE2::Arg(ptr, RE2::Arg::parse_ ## name ## _hex); } \
-  inline RE2::Arg RE2::Octal(type* ptr) { \
-    return RE2::Arg(ptr, RE2::Arg::parse_ ## name ## _octal); } \
-  inline RE2::Arg RE2::CRadix(type* ptr) { \
-    return RE2::Arg(ptr, RE2::Arg::parse_ ## name ## _cradix); }
+#define MAKE_INTEGER_PARSER(type, name)                    \
+  inline RE2::Arg RE2::Hex(type* ptr) {                    \
+    return RE2::Arg(ptr, RE2::Arg::parse_##name##_hex);    \
+  }                                                        \
+  inline RE2::Arg RE2::Octal(type* ptr) {                  \
+    return RE2::Arg(ptr, RE2::Arg::parse_##name##_octal);  \
+  }                                                        \
+  inline RE2::Arg RE2::CRadix(type* ptr) {                 \
+    return RE2::Arg(ptr, RE2::Arg::parse_##name##_cradix); \
+  }
 
 MAKE_INTEGER_PARSER(short,              short)
 MAKE_INTEGER_PARSER(unsigned short,     ushort)
@@ -868,15 +873,62 @@ MAKE_INTEGER_PARSER(int,
 MAKE_INTEGER_PARSER(unsigned int,       uint)
 MAKE_INTEGER_PARSER(long,               long)
 MAKE_INTEGER_PARSER(unsigned long,      ulong)
-#if RE2_HAVE_LONGLONG
 MAKE_INTEGER_PARSER(long long,          longlong)
 MAKE_INTEGER_PARSER(unsigned long long, ulonglong)
-#endif
 
 #undef MAKE_INTEGER_PARSER
 
+#ifndef SWIG
+// Helper for writing global or static RE2s safely.
+// Write
+//     static LazyRE2 re = {".*"};
+// and then use *re instead of writing
+//     static RE2 re(".*");
+// The former is more careful about multithreaded
+// situations than the latter.
+//
+// N.B. This class never deletes the RE2 object that
+// it constructs: that's a feature, so that it can be used
+// for global and function static variables.
+class LazyRE2 {
+ private:
+  struct NoArg {};
+
+ public:
+  typedef RE2 element_type;  // support std::pointer_traits
+
+  // Constructor omitted to preserve braced initialization in C++98.
+
+  // Pretend to be a pointer to Type (never NULL due to on-demand creation):
+  RE2& operator*() const { return *get(); }
+  RE2* operator->() const { return get(); }
+
+  // Named accessor/initializer:
+  RE2* get() const {
+    std::call_once(once_, &LazyRE2::Init, this);
+    return ptr_;
+  }
+
+  // All data fields must be public to support {"foo"} initialization.
+  const char* pattern_;
+  RE2::CannedOptions options_;
+  NoArg barrier_against_excess_initializers_;
+
+  mutable RE2* ptr_;
+  mutable std::once_flag once_;
+
+ private:
+  static void Init(const LazyRE2* lazy_re2) {
+    lazy_re2->ptr_ = new RE2(lazy_re2->pattern_, lazy_re2->options_);
+  }
+
+  void operator=(const LazyRE2&);  // disallowed
+};
+#endif  // SWIG
+
 }  // namespace re2
 
 using re2::RE2;
+using re2::LazyRE2;
 
-#endif /* RE2_RE2_H */
+#endif  // RE2_RE2_H_
--- a/src/3rdparty/chromium/third_party/re2/src/re2/filtered_re2.h
+++ b/src/3rdparty/chromium/third_party/re2/src/re2/filtered_re2.h
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+#ifndef RE2_FILTERED_RE2_H_
+#define RE2_FILTERED_RE2_H_
+
 // The class FilteredRE2 is used as a wrapper to multiple RE2 regexps.
 // It provides a prefilter mechanism that helps in cutting down the
 // number of regexps that need to be actually searched.
@@ -18,20 +21,19 @@
 // indices of strings that were found in the text to get the actual
 // regexp matches.
 
-#ifndef RE2_FILTERED_RE2_H_
-#define RE2_FILTERED_RE2_H_
-
+#include <string>
 #include <vector>
+
 #include "re2/re2.h"
 
 namespace re2 {
-using std::vector;
 
 class PrefilterTree;
 
 class FilteredRE2 {
  public:
   FilteredRE2();
+  explicit FilteredRE2(int min_atom_len);
   ~FilteredRE2();
 
   // Uses RE2 constructor to create a RE2 object (re). Returns
@@ -47,7 +49,7 @@ class FilteredRE2 {
   // the search text should be lowercased first to find matching
   // strings from the set of strings returned by Compile.  Call after
   // all Add calls are done.
-  void Compile(vector<string>* strings_to_match);
+  void Compile(std::vector<string>* strings_to_match);
 
   // Returns the index of the first matching regexp.
   // Returns -1 on no match. Can be called prior to Compile.
@@ -59,21 +61,21 @@ class FilteredRE2 {
   // Returns -1 on no match. Compile has to be called before
   // calling this.
   int FirstMatch(const StringPiece& text,
-                 const vector<int>& atoms) const;
+                 const std::vector<int>& atoms) const;
 
   // Returns the indices of all matching regexps, after first clearing
   // matched_regexps.
   bool AllMatches(const StringPiece& text,
-                  const vector<int>& atoms,
-                  vector<int>* matching_regexps) const;
+                  const std::vector<int>& atoms,
+                  std::vector<int>* matching_regexps) const;
 
   // Returns the indices of all potentially matching regexps after first
   // clearing potential_regexps.
   // A regexp is potentially matching if it passes the filter.
   // If a regexp passes the filter it may still not match.
   // A regexp that does not pass the filter is guaranteed to not match.
-  void AllPotentials(const vector<int>& atoms,
-                     vector<int>* potential_regexps) const;
+  void AllPotentials(const std::vector<int>& atoms,
+                     std::vector<int>* potential_regexps) const;
 
   // The number of regexps added.
   int NumRegexps() const { return static_cast<int>(re2_vec_.size()); }
@@ -87,11 +89,11 @@ class FilteredRE2 {
   void PrintPrefilter(int regexpid);
 
   // Useful for testing and debugging.
-  void RegexpsGivenStrings(const vector<int>& matched_atoms,
-                           vector<int>* passed_regexps);
+  void RegexpsGivenStrings(const std::vector<int>& matched_atoms,
+                           std::vector<int>* passed_regexps);
 
   // All the regexps in the FilteredRE2.
-  vector<RE2*> re2_vec_;
+  std::vector<RE2*> re2_vec_;
 
   // Has the FilteredRE2 been compiled using Compile()
   bool compiled_;
@@ -99,9 +101,8 @@ class FilteredRE2 {
   // An AND-OR tree of string atoms used for filtering regexps.
   PrefilterTree* prefilter_tree_;
 
-  //DISALLOW_COPY_AND_ASSIGN(FilteredRE2);
-  FilteredRE2(const FilteredRE2&);
-  void operator=(const FilteredRE2&);
+  FilteredRE2(const FilteredRE2&) = delete;
+  FilteredRE2& operator=(const FilteredRE2&) = delete;
 };
 
 }  // namespace re2
--- a/src/3rdparty/chromium/third_party/re2/src/re2/set.h
+++ b/src/3rdparty/chromium/third_party/re2/src/re2/set.h
@@ -2,16 +2,20 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#ifndef RE2_SET_H
-#define RE2_SET_H
+#ifndef RE2_SET_H_
+#define RE2_SET_H_
 
-#include <utility>
+#include <string>
 #include <vector>
 
 #include "re2/re2.h"
 
 namespace re2 {
-using std::vector;
+class Prog;
+class Regexp;
+}  // namespace re2
+
+namespace re2 {
 
 // An RE2::Set represents a collection of regexps that can
 // be searched for simultaneously.
@@ -31,25 +35,25 @@ class RE2::Set {
 
   // Compile prepares the Set for matching.
   // Add must not be called again after Compile.
-  // Compile must be called before FullMatch or PartialMatch.
+  // Compile must be called before Match.
   // Compile may return false if it runs out of memory.
   bool Compile();
 
   // Match returns true if text matches any of the regexps in the set.
-  // If so, it fills v with the indices of the matching regexps.
-  bool Match(const StringPiece& text, vector<int>* v) const;
+  // If so, it fills v (if not NULL) with the indices of the matching regexps.
+  bool Match(const StringPiece& text, std::vector<int>* v) const;
 
  private:
   RE2::Options options_;
   RE2::Anchor anchor_;
-  vector<re2::Regexp*> re_;
+  std::vector<re2::Regexp*> re_;
   re2::Prog* prog_;
   bool compiled_;
-  //DISALLOW_COPY_AND_ASSIGN(Set);
-  Set(const Set&);
-  void operator=(const Set&);
+
+  Set(const Set&) = delete;
+  Set& operator=(const Set&) = delete;
 };
 
 }  // namespace re2
 
-#endif  // RE2_SET_H
+#endif  // RE2_SET_H_
--- a/src/3rdparty/chromium/third_party/re2/src/re2/stringpiece.h
+++ b/src/3rdparty/chromium/third_party/re2/src/re2/stringpiece.h
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+#ifndef RE2_STRINGPIECE_H_
+#define RE2_STRINGPIECE_H_
+
 // A string-like object that points to a sized piece of memory.
 //
 // Functions or methods may use const StringPiece& parameters to accept either
@@ -16,143 +19,139 @@
 //
 // Arghh!  I wish C++ literals were "string".
 
-#ifndef STRINGS_STRINGPIECE_H__
-#define STRINGS_STRINGPIECE_H__
-
+#include <stddef.h>
 #include <string.h>
 #include <algorithm>
-#include <cstddef>
 #include <iosfwd>
+#include <iterator>
 #include <string>
 
 namespace re2 {
 
 class StringPiece {
- private:
-  const char*   ptr_;
-  int           length_;
-
  public:
+  typedef char value_type;
+  typedef char* pointer;
+  typedef const char* const_pointer;
+  typedef char& reference;
+  typedef const char& const_reference;
+  typedef const char* const_iterator;
+  typedef const_iterator iterator;
+  typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+  typedef const_reverse_iterator reverse_iterator;
+  typedef size_t size_type;
+  typedef ptrdiff_t difference_type;
+  static const size_type npos = static_cast<size_type>(-1);
+
   // We provide non-explicit singleton constructors so users can pass
   // in a "const char*" or a "string" wherever a "StringPiece" is
   // expected.
-  StringPiece() : ptr_(NULL), length_(0) { }
-  StringPiece(const char* str)
-    : ptr_(str), length_((str == NULL) ? 0 : static_cast<int>(strlen(str))) { }
+  StringPiece()
+      : data_(NULL), size_(0) {}
   StringPiece(const std::string& str)
-    : ptr_(str.data()), length_(static_cast<int>(str.size())) { }
-  StringPiece(const char* offset, int len) : ptr_(offset), length_(len) { }
-
-  // data() may return a pointer to a buffer with embedded NULs, and the
-  // returned buffer may or may not be null terminated.  Therefore it is
-  // typically a mistake to pass data() to a routine that expects a NUL
-  // terminated string.
-  const char* data() const { return ptr_; }
-  int size() const { return length_; }
-  int length() const { return length_; }
-  bool empty() const { return length_ == 0; }
+      : data_(str.data()), size_(str.size()) {}
+  StringPiece(const char* str)
+      : data_(str), size_(str == NULL ? 0 : strlen(str)) {}
+  StringPiece(const char* str, size_type len)
+      : data_(str), size_(len) {}
 
-  void clear() { ptr_ = NULL; length_ = 0; }
-  void set(const char* data, int len) { ptr_ = data; length_ = len; }
-  void set(const char* str) {
-    ptr_ = str;
-    if (str != NULL)
-      length_ = static_cast<int>(strlen(str));
-    else
-      length_ = 0;
+  const_iterator begin() const { return data_; }
+  const_iterator end() const { return data_ + size_; }
+  const_reverse_iterator rbegin() const {
+    return const_reverse_iterator(data_ + size_);
   }
-  void set(const void* data, int len) {
-    ptr_ = reinterpret_cast<const char*>(data);
-    length_ = len;
+  const_reverse_iterator rend() const {
+    return const_reverse_iterator(data_);
   }
 
-  char operator[](int i) const { return ptr_[i]; }
+  size_type size() const { return size_; }
+  size_type length() const { return size_; }
+  bool empty() const { return size_ == 0; }
 
-  void remove_prefix(int n) {
-    ptr_ += n;
-    length_ -= n;
+  const_reference operator[](size_type i) const { return data_[i]; }
+  const_pointer data() const { return data_; }
+
+  void remove_prefix(size_type n) {
+    data_ += n;
+    size_ -= n;
   }
 
-  void remove_suffix(int n) {
-    length_ -= n;
+  void remove_suffix(size_type n) {
+    size_ -= n;
   }
 
-  int compare(const StringPiece& x) const {
-    int r = memcmp(ptr_, x.ptr_, std::min(length_, x.length_));
-    if (r == 0) {
-      if (length_ < x.length_) r = -1;
-      else if (length_ > x.length_) r = +1;
-    }
-    return r;
+  void set(const char* str) {
+    data_ = str;
+    size_ = str == NULL ? 0 : strlen(str);
+  }
+
+  void set(const char* str, size_type len) {
+    data_ = str;
+    size_ = len;
   }
 
   std::string as_string() const {
-    return std::string(data(), size());
+    return std::string(data_, size_);
   }
+
   // We also define ToString() here, since many other string-like
   // interfaces name the routine that converts to a C++ string
   // "ToString", and it's confusing to have the method that does that
   // for a StringPiece be called "as_string()".  We also leave the
   // "as_string()" method defined here for existing code.
   std::string ToString() const {
-    return std::string(data(), size());
+    return std::string(data_, size_);
   }
 
-  void CopyToString(std::string* target) const;
-  void AppendToString(std::string* target) const;
-
-  // Does "this" start with "x"
-  bool starts_with(const StringPiece& x) const {
-    return ((length_ >= x.length_) &&
-            (memcmp(ptr_, x.ptr_, x.length_) == 0));
+  void CopyToString(std::string* target) const {
+    target->assign(data_, size_);
   }
 
-  // Does "this" end with "x"
-  bool ends_with(const StringPiece& x) const {
-    return ((length_ >= x.length_) &&
-            (memcmp(ptr_ + (length_-x.length_), x.ptr_, x.length_) == 0));
+  void AppendToString(std::string* target) const {
+    target->append(data_, size_);
   }
 
-  // standard STL container boilerplate
-  typedef char value_type;
-  typedef const char* pointer;
-  typedef const char& reference;
-  typedef const char& const_reference;
-  typedef size_t size_type;
-  typedef ptrdiff_t difference_type;
-  static const size_type npos;
-  typedef const char* const_iterator;
-  typedef const char* iterator;
-  typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
-  typedef std::reverse_iterator<iterator> reverse_iterator;
-  iterator begin() const { return ptr_; }
-  iterator end() const { return ptr_ + length_; }
-  const_reverse_iterator rbegin() const {
-    return const_reverse_iterator(ptr_ + length_);
+  size_type copy(char* buf, size_type n, size_type pos = 0) const;
+  StringPiece substr(size_type pos = 0, size_type n = npos) const;
+
+  int compare(const StringPiece& x) const {
+    int r = memcmp(data_, x.data_, std::min(size_, x.size_));
+    if (r == 0) {
+      if (size_ < x.size_) r = -1;
+      else if (size_ > x.size_) r = +1;
+    }
+    return r;
   }
-  const_reverse_iterator rend() const {
-    return const_reverse_iterator(ptr_);
+
+  // Does "this" start with "x"?
+  bool starts_with(const StringPiece& x) const {
+    return size_ >= x.size_ &&
+           memcmp(data_, x.data_, x.size_) == 0;
   }
-  // STLS says return size_type, but Google says return int
-  int max_size() const { return length_; }
-  int capacity() const { return length_; }
 
-  size_type copy(char* buf, size_type n, size_type pos = 0) const;
+  // Does "this" end with "x"?
+  bool ends_with(const StringPiece& x) const {
+    return size_ >= x.size_ &&
+           memcmp(data_ + size_ - x.size_, x.data_, x.size_) == 0;
+  }
 
-  bool contains(StringPiece s) const;
+  bool contains(const StringPiece& s) const {
+    return find(s) != npos;
+  }
 
   size_type find(const StringPiece& s, size_type pos = 0) const;
   size_type find(char c, size_type pos = 0) const;
   size_type rfind(const StringPiece& s, size_type pos = npos) const;
   size_type rfind(char c, size_type pos = npos) const;
 
-  StringPiece substr(size_type pos, size_type n = npos) const;
-
-  static bool _equal(const StringPiece&, const StringPiece&);
+ private:
+  const_pointer data_;
+  size_type size_;
 };
 
 inline bool operator==(const StringPiece& x, const StringPiece& y) {
-  return StringPiece::_equal(x, y);
+  return x.size() == y.size() &&
+         memcmp(x.data(), y.data(), x.size()) == 0;
 }
 
 inline bool operator!=(const StringPiece& x, const StringPiece& y) {
@@ -160,8 +159,7 @@ inline bool operator!=(const StringPiece
 }
 
 inline bool operator<(const StringPiece& x, const StringPiece& y) {
-  const int r = memcmp(x.data(), y.data(),
-                       std::min(x.size(), y.size()));
+  int r = memcmp(x.data(), y.data(), std::min(x.size(), y.size()));
   return ((r < 0) || ((r == 0) && (x.size() < y.size())));
 }
 
@@ -179,7 +177,7 @@ inline bool operator>=(const StringPiece
 
 }  // namespace re2
 
-// allow StringPiece to be logged
-extern std::ostream& operator<<(std::ostream& o, const re2::StringPiece& piece);
+// Allow StringPiece to be logged.
+std::ostream& operator<<(std::ostream& o, const re2::StringPiece& p);
 
-#endif  // STRINGS_STRINGPIECE_H__
+#endif  // RE2_STRINGPIECE_H_