xpcom/string/public/nsTSubstringTuple.h@6474c204b198 (annotated)
xpcom/string/public/nsTSubstringTuple.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | //* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim:set ts=2 sw=2 sts=2 et cindent: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | // IWYU pragma: private, include "nsString.h" |
| michael@0 | 7 | |
| michael@0 | 8 | /** |
| michael@0 | 9 | * nsTSubstringTuple_CharT |
| michael@0 | 10 | * |
| michael@0 | 11 | * Represents a tuple of string fragments. Built as a recursive binary tree. |
| michael@0 | 12 | * It is used to implement the concatenation of two or more string objects. |
| michael@0 | 13 | * |
| michael@0 | 14 | * NOTE: This class is a private implementation detail and should never be |
| michael@0 | 15 | * referenced outside the string code. |
| michael@0 | 16 | */ |
| michael@0 | 17 | class nsTSubstringTuple_CharT |
| michael@0 | 18 | { |
| michael@0 | 19 | public: |
| michael@0 | 20 | |
| michael@0 | 21 | typedef CharT char_type; |
| michael@0 | 22 | typedef nsCharTraits<char_type> char_traits; |
| michael@0 | 23 | |
| michael@0 | 24 | typedef nsTSubstringTuple_CharT self_type; |
| michael@0 | 25 | typedef nsTSubstring_CharT substring_type; |
| michael@0 | 26 | typedef nsTSubstring_CharT base_string_type; |
| michael@0 | 27 | typedef uint32_t size_type; |
| michael@0 | 28 | |
| michael@0 | 29 | public: |
| michael@0 | 30 | |
| michael@0 | 31 | nsTSubstringTuple_CharT(const base_string_type* a, const base_string_type* b) |
| michael@0 | 32 | : mHead(nullptr) |
| michael@0 | 33 | , mFragA(a) |
| michael@0 | 34 | , mFragB(b) {} |
| michael@0 | 35 | |
| michael@0 | 36 | nsTSubstringTuple_CharT(const self_type& head, const base_string_type* b) |
| michael@0 | 37 | : mHead(&head) |
| michael@0 | 38 | , mFragA(nullptr) // this fragment is ignored when head != nullptr |
| michael@0 | 39 | , mFragB(b) {} |
| michael@0 | 40 | |
| michael@0 | 41 | /** |
| michael@0 | 42 | * computes the aggregate string length |
| michael@0 | 43 | */ |
| michael@0 | 44 | size_type Length() const; |
| michael@0 | 45 | |
| michael@0 | 46 | /** |
| michael@0 | 47 | * writes the aggregate string to the given buffer. bufLen is assumed |
| michael@0 | 48 | * to be equal to or greater than the value returned by the Length() |
| michael@0 | 49 | * method. the string written to |buf| is not null-terminated. |
| michael@0 | 50 | */ |
| michael@0 | 51 | void WriteTo(char_type *buf, uint32_t bufLen) const; |
| michael@0 | 52 | |
| michael@0 | 53 | /** |
| michael@0 | 54 | * returns true if this tuple is dependent on (i.e., overlapping with) |
| michael@0 | 55 | * the given char sequence. |
| michael@0 | 56 | */ |
| michael@0 | 57 | bool IsDependentOn(const char_type *start, const char_type *end) const; |
| michael@0 | 58 | |
| michael@0 | 59 | private: |
| michael@0 | 60 | |
| michael@0 | 61 | const self_type* mHead; |
| michael@0 | 62 | const base_string_type* mFragA; |
| michael@0 | 63 | const base_string_type* mFragB; |
| michael@0 | 64 | }; |
| michael@0 | 65 | |
| michael@0 | 66 | inline |
| michael@0 | 67 | const nsTSubstringTuple_CharT |
| michael@0 | 68 | operator+(const nsTSubstringTuple_CharT::base_string_type& a, const nsTSubstringTuple_CharT::base_string_type& b) |
| michael@0 | 69 | { |
| michael@0 | 70 | return nsTSubstringTuple_CharT(&a, &b); |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | inline |
| michael@0 | 74 | const nsTSubstringTuple_CharT |
| michael@0 | 75 | operator+(const nsTSubstringTuple_CharT& head, const nsTSubstringTuple_CharT::base_string_type& b) |
| michael@0 | 76 | { |
| michael@0 | 77 | return nsTSubstringTuple_CharT(head, &b); |
| michael@0 | 78 | } |
