Name Description Size
crashtests 1515
nsASCIIMask.cpp 1423
nsASCIIMask.h 2470
nsAString.h ASCII case-insensitive comparator. (for Unicode case-insensitive comparision, see nsUnicharUtils.h) 1154
nsCharTraits.h Some macros for converting char16_t (UTF-16) to and from Unicode scalar values. Note that UTF-16 represents all Unicode scalar values up to U+10FFFF by using "surrogate pairs". These consist of a high surrogate, i.e. a code point in the range U+D800 - U+DBFF, and a low surrogate, i.e. a code point in the range U+DC00 - U+DFFF, like this: U+D800 U+DC00 = U+10000 U+D800 U+DC01 = U+10001 ... U+DBFF U+DFFE = U+10FFFE U+DBFF U+DFFF = U+10FFFF These surrogate code points U+D800 - U+DFFF are not themselves valid Unicode scalar values and are not well-formed UTF-16 except as high-surrogate / low-surrogate pairs. 15093
nsDependentString.h !defined(nsDependentString_h___) 513
nsDependentSubstring.h !defined(nsDependentSubstring_h___) 504
nsLiteralString.h !defined(nsLiteralString_h___) 962
nsPrintfCString.h nsPrintfCString lets you create a nsCString using a printf-style format string. For example: NS_WARNING(nsPrintfCString("Unexpected value: %f", 13.917).get()); nsPrintfCString has a small built-in auto-buffer. For larger strings, it will allocate on the heap. See also nsCString::AppendPrintf(). 1770
nsPromiseFlatString.h !defined(nsPromiseFlatString_h___) 500
nsReadableUtils.cpp A helper function that allocates a buffer of the desired character type big enough to hold a copy of the supplied string (plus a zero terminator). @param aSource an string you will eventually be making a copy of @return a new buffer which you must free with |free|. 18856
nsReadableUtils.h I guess all the routines in this file are all mis-named. According to our conventions, they should be |NS_xxx|. 23934
nsString.h A helper class that converts a UTF-16 string to ASCII in a lossy manner 5135
nsStringBuffer.cpp Alloc returns a pointer to a new string header with set capacity. 6259
nsStringBuffer.h This structure precedes the string buffers "we" allocate. It may be the case that nsTAString::mData does not point to one of these special buffers. The mDataFlags member variable distinguishes the buffer type. When this header is in use, it enables reference counting, and capacity tracking. NOTE: A string buffer can be modified only if its reference count is 1. 8057
nsStringFlags.h 3560
nsStringFwd.h nsStringFwd.h --- forward declarations for string classes 3003
nsStringIterator.h @see nsTAString 3396
nsStringStats.cpp 1955
nsStringStats.h 873
nsTDependentString.cpp 1764
nsTDependentString.h nsTDependentString Stores a null-terminated, immutable sequence of characters. Subclass of nsTString that restricts string value to an immutable character sequence. This class does not own its data, so the creator of objects of this type must take care to ensure that a nsTDependentString continues to reference valid memory for the duration of its use. 4172
nsTDependentSubstring.cpp 4065
nsTDependentSubstring.h nsTDependentSubstring_CharT A string class which wraps an external array of string characters. It is the client code's responsibility to ensure that the external buffer remains valid for a long as the string is alive. NAMES: nsDependentSubstring for wide characters nsDependentCSubstring for narrow characters 6076
nsTextFormatter.cpp Portable safe sprintf code. Code based on mozilla/nsprpub/src/io/prprf.c rev 3.7 Contributor(s): Kipp E.B. Hickman <> (original author) Frank Yung-Fong Tang <> Daniele Nicolodi <> 22123
nsTextFormatter.h This code was copied from xpcom/ds/nsTextFormatter r1.3 Memory model and Frozen linkage changes only. -- Prasad <> 5464
nsTLiteralString.cpp 440
nsTLiteralString.h nsTLiteralString_CharT Stores a null-terminated, immutable sequence of characters. nsTString-lookalike that restricts its string value to a literal character sequence. Can be implicitly cast to const nsTString& (the const is essential, since this class's data are not writable). The data are assumed to be static (permanent) and therefore, as an optimization, this class does not have a destructor. 3929
nsTPromiseFlatString.cpp 947
nsTPromiseFlatString.h NOTE: Try to avoid flat strings. |PromiseFlat[C]String| will help you as a last resort, and this may be necessary when dealing with legacy or OS calls, but in general, requiring a null-terminated array of characters kills many of the performance wins the string classes offer. Write your own code to use |nsA[C]String&|s for parameters. Write your string proccessing algorithms to exploit iterators. If you do this, you will benefit from being able to chain operations without copying or allocating and your code will be significantly more efficient. Remember, a function that takes an |const nsA[C]String&| can always be passed a raw character pointer by wrapping it (for free) in a |nsDependent[C]String|. But a function that takes a character pointer always has the potential to force allocation and copying. How to use it: A |nsPromiseFlat[C]String| doesn't necessarily own the characters it promises. You must never use it to promise characters out of a string with a shorter lifespan. The typical use will be something like this: SomeOSFunction( PromiseFlatCString(aCSubstring).get() ); // GOOD Here's a BAD use: const char* buffer = PromiseFlatCString(aCSubstring).get(); SomeOSFunction(buffer); // BAD!! |buffer| is a dangling pointer The only way to make one is with the function |PromiseFlat[C]String|, which produce a |const| instance. ``What if I need to keep a promise around for a little while?'' you might ask. In that case, you can keep a reference, like so: const nsCString& flat = PromiseFlatString(aCSubstring); // Temporaries usually die after the full expression containing the // expression that created the temporary is evaluated. But when a // temporary is assigned to a local reference, the temporary's lifetime // is extended to the reference's lifetime (C++11 [class.temporary]p5). // // This reference holds the anonymous temporary alive. But remember: it // must _still_ have a lifetime shorter than that of |aCSubstring|, and // |aCSubstring| must not be changed while the PromiseFlatString lives. SomeOSFunction(flat.get()); SomeOtherOSFunction(flat.get()); How does it work? A |nsPromiseFlat[C]String| is just a wrapper for another string. If you apply it to a string that happens to be flat, your promise is just a dependent reference to the string's data. If you apply it to a non-flat string, then a temporary flat string is created for you, by allocating and copying. In the event that you end up assigning the result into a sharing string (e.g., |nsTString|), the right thing happens. 5395
nsTString.cpp nsTString::SetCharAt 1138
nsTString.h This is the canonical null-terminated string class. All subclasses promise null-terminated storage. Instances of this class allocate strings on the heap. NAMES: nsString for wide characters nsCString for narrow characters This class is also known as nsAFlat[C]String, where "flat" is used to denote a null-terminated string. 13105
nsTStringComparator.cpp 3229
nsTStringHasher.h 892
nsTStringRepr.cpp 10174
nsTStringRepr.h 20903
nsTSubstring.h This handle represents permission to perform low-level writes the storage buffer of a string in a manner that's aware of the actual capacity of the storage buffer allocation and that's cache-friendly in the sense that the writing of zero terminator for C compatibility can happen in linear memory access order (i.e. the zero terminator write takes place after writing new content to the string as opposed to the zero terminator write happening first causing a non-linear memory write for cache purposes). If you requested a prefix to be preserved when starting or restarting the bulk write, the prefix is present at the start of the buffer exposed by this handle as Span or as a raw pointer, and it's your responsibility to start writing after after the preserved prefix (which you presumably wanted not to overwrite since you asked for it to be preserved). In a success case, you must call Finish() with the new length of the string. In failure cases, it's OK to return early from the function whose local variable this handle is. The destructor of this class takes care of putting the string in a valid and mostly harmless state in that case by setting the value of a non-empty string to a single REPLACEMENT CHARACTER or in the case of nsACString that's too short for a REPLACEMENT CHARACTER to fit, an ASCII SUBSTITUTE. You must not allow this handle to outlive the string you obtained it from. You must not access the string you obtained this handle from in any way other than through this handle until you call Finish() on the handle or the handle goes out of scope. Once you've called Finish(), you must not call any methods on this handle and must not use values previously obtained. Once you call RestartBulkWrite(), you must not use values previously obtained from this handle and must reobtain the new corresponding values. 52834
nsTSubstringTuple.cpp computes the aggregate string length 2962
nsTSubstringTuple.h nsTSubstringTuple Represents a tuple of string fragments. Built as a recursive binary tree. It is used to implement the concatenation of two or more string objects. NOTE: This class is a private implementation detail and should never be referenced outside the string code. 2880
nsUTF8Utils.h Extract the next Unicode scalar value from the buffer and return it. The pointer passed in is advanced to the start of the next character in the buffer. Upon error, the return value is 0xFFFD, *aBuffer is advanced over the maximal valid prefix and *aErr is set to true (if aErr is not null). Note: This method never sets *aErr to false to allow error accumulation across multiple calls. Precondition: *aBuffer < aEnd 7712
README.html 385
RustRegex.h RustRegexCaptures represents storage for sub-capture locations of a match. Computing the capture groups of a match can carry a significant performance penalty, so their use in the API is optional. A RustRegexCaptures value may outlive its corresponding RustRegex and can be freed independently. It is not safe to use from multiple threads simultaneously. 23686
RustStringAPI.cpp 3886