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VVVVVV/desktop_version/src/UtilityClass.h

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Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
#ifndef UTILITYCLASS_H
#define UTILITYCLASS_H
#include <SDL.h>
#include <string>
Refactor ss_toi() to not use stringstreams Apart from the std::string, this function no longer uses the STL. ss_toi() is a simple function - it converts the input into an int, taking as many digits as possible until it reaches a non-digit character, at which point it stops. It's trivial to implement this without the STL. I could've used Int() here, but that would've required copying the string to a temporary buffer to insert a null-terminator (we can't just use a pointer-and-length data type either, the string functions don't operate like that - one disadvantage of C strings!). Instead, I decided to implement my own conversion to int here, because I don't think the way we humans write our Arabic numerals is going to change anytime soon. Also, the std::string input is now passed by const reference, instead of making a copy - cutting down on unnecessary memory operations.
2021-02-07 22:09:47 +01:00
int ss_toi(const std::string& str);
Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
Refactor loading arrays from XML to not use the STL The current way "arrays" from XML files are loaded (before this commit is applied) goes something like this: 1. Read the buffer of the contents of the tag using TinyXML-2. 2. Allocate a buffer on the heap of the same size, and copy the existing buffer to it. (This is what the statement `std::string TextString = pText;` does.) 3. For each delimiter in the heap-allocated buffer... a. Allocate another buffer on the heap, and copy the characters from the previous delimiter to the delimiter you just hit. b. Then allocate the buffer AGAIN, to copy it into an std::vector. 4. Then re-allocate every single buffer YET AGAIN, because you need to make a copy of the std::vector in split() to return it to the caller. As you can see, the existing way uses a lot of memory allocations and data marshalling, just to split some text. The problem here is mostly making a temporary std::vector of split text, before doing any actual useful work (most likely, putting it into an array or ANOTHER std::vector - if the latter, then that's yet another memory allocation on top of the memory allocation you already did; this memory allocation is unavoidable, unlike the ones mentioned earlier, which should be removed). So I noticed that since we're iterating over the entire string once (just to shove its contents into a temporary std::vector), and then basically iterating over it again - why can't the whole thing just be more immediate, and just be iterated over once? So that's what I've done here. I've axed the split() function (both of them, actually), and made next_split() and next_split_s(). next_split() will take an existing string and a starting index, and it will find the next occurrence of the given delimiter in the string. Once it does so, it will return the length from the previous starting index, and modify your starting index as well. The price for immediateness is that you're supposed to handle keeping the index of the previous starting index around in order to be able to use the function; updating it after each iteration is also your responsibility. (By the way, next_split() doesn't use SDL_strchr(), because we can't get the length of the substring for the last substring. We could handle this special case specifically, but it'd be uglier; it also introduces iterating over the last substring twice, when we only need to do it once.) next_split_s() does the same thing as next_split(), except it will copy the resulting substring into a buffer that you provide (along with its size). Useful if you don't particularly care about the length of the substring. All callers have been updated accordingly. This new system does not make ANY heap allocations at all; at worst, it allocates a temporary buffer on the stack, but that's only if you use next_split_s(); plus, it'd be a fixed-size buffer, and stack allocations are negligible anyway. This improves performance when loading any sort of XML file, especially loading custom levels - which, on my system at least, I can noticeably tell (there's less of a freeze when I load in to a custom level with lots of scripts). It also decreases memory usage, because the heap isn't being used just to iterate over some delimiters when XML files are loaded.
2021-02-13 01:37:29 +01:00
bool next_split(
size_t* start,
size_t* len,
const char* str,
const char delim
);
Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
Refactor loading arrays from XML to not use the STL The current way "arrays" from XML files are loaded (before this commit is applied) goes something like this: 1. Read the buffer of the contents of the tag using TinyXML-2. 2. Allocate a buffer on the heap of the same size, and copy the existing buffer to it. (This is what the statement `std::string TextString = pText;` does.) 3. For each delimiter in the heap-allocated buffer... a. Allocate another buffer on the heap, and copy the characters from the previous delimiter to the delimiter you just hit. b. Then allocate the buffer AGAIN, to copy it into an std::vector. 4. Then re-allocate every single buffer YET AGAIN, because you need to make a copy of the std::vector in split() to return it to the caller. As you can see, the existing way uses a lot of memory allocations and data marshalling, just to split some text. The problem here is mostly making a temporary std::vector of split text, before doing any actual useful work (most likely, putting it into an array or ANOTHER std::vector - if the latter, then that's yet another memory allocation on top of the memory allocation you already did; this memory allocation is unavoidable, unlike the ones mentioned earlier, which should be removed). So I noticed that since we're iterating over the entire string once (just to shove its contents into a temporary std::vector), and then basically iterating over it again - why can't the whole thing just be more immediate, and just be iterated over once? So that's what I've done here. I've axed the split() function (both of them, actually), and made next_split() and next_split_s(). next_split() will take an existing string and a starting index, and it will find the next occurrence of the given delimiter in the string. Once it does so, it will return the length from the previous starting index, and modify your starting index as well. The price for immediateness is that you're supposed to handle keeping the index of the previous starting index around in order to be able to use the function; updating it after each iteration is also your responsibility. (By the way, next_split() doesn't use SDL_strchr(), because we can't get the length of the substring for the last substring. We could handle this special case specifically, but it'd be uglier; it also introduces iterating over the last substring twice, when we only need to do it once.) next_split_s() does the same thing as next_split(), except it will copy the resulting substring into a buffer that you provide (along with its size). Useful if you don't particularly care about the length of the substring. All callers have been updated accordingly. This new system does not make ANY heap allocations at all; at worst, it allocates a temporary buffer on the stack, but that's only if you use next_split_s(); plus, it'd be a fixed-size buffer, and stack allocations are negligible anyway. This improves performance when loading any sort of XML file, especially loading custom levels - which, on my system at least, I can noticeably tell (there's less of a freeze when I load in to a custom level with lots of scripts). It also decreases memory usage, because the heap isn't being used just to iterate over some delimiters when XML files are loaded.
2021-02-13 01:37:29 +01:00
bool next_split_s(
char buffer[],
const size_t buffer_size,
size_t* start,
const char* str,
const char delim
);
Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
Add is_number() This will be used to check if a string is a valid integer. So negative numbers are accepted, unlike is_positive_num().
2020-08-07 06:22:10 +02:00
bool is_number(const char* str);
Refactor is_positive_num() to use C-strings This makes the future move to C easier, as well as just shows that it's plain unnecessary to use an std::string here.
2021-02-12 01:36:22 +01:00
bool is_positive_num(const char* str, const bool hex);
Add is_positive_num() to UtilityClass.cpp This is a convenience function to tell if a string is not only a number (and can thus be passed into atoi()), but is also positive in particular.
2020-04-17 23:52:09 +02:00
Refactor endsWith() to not use the STL There's not really any reason for this function to use heap-allocated strings. So I've refactored it to not do that. I would've used SDL_strrstr(), if it existed. It does not appear to exist. But that's okay.
2021-02-27 00:29:37 +01:00
bool endsWith(const char* str, const char* suffix);
Move endsWith() to UtilityClass.cpp and put it in header file This ensures that endsWith() can be used outside of editor.cpp. When leo60228 originally wrote endsWith(), it was static, but I asked him on Discord just now and he more-or-less confirmed that it's fine if it's not static. If it was static, it would be confined to UtilityClass.cpp now instead!
2020-06-21 23:25:23 +02:00
Add VVV_fillstring() This function is simple - it takes a given buffer and its size, fills it with a certain character, and null-terminates it. It's meant to be used with freshly-created buffers, so we don't copy-paste code.
2021-04-12 02:19:53 +02:00
void VVV_fillstring(
char* buffer,
const size_t buffer_size,
const char fillchar
);
Rename INBOUNDS() macro to INBOUNDS_VEC() Since there's an INBOUNDS_ARR() macro, it's much better to specify the macro for the vector is a macro for the vector, to avoid confusion. All usages of this macro have been renamed accordingly.
2020-09-08 09:31:44 +02:00
#define INBOUNDS_VEC(index, vector) ((int) index >= 0 && (int) index < (int) vector.size())
Turn obj.collect and obj.customcollect into plain arrays Since they're always fixed-size, there's no need for them to be vectors. Also added an INBOUNDS_ARR() macro to do bounds checks with plain arrays.
2020-07-03 04:17:32 +02:00
#define INBOUNDS_ARR(index, array) ((int) index >= 0 && (int) index < (int) SDL_arraysize(array))
Add INBOUNDS macro I mean, I probably should've done this earlier, but using this saves on typing and improves readability.
2020-06-14 03:22:05 +02:00
Add one-time OoB logs to tile-drawing functions These functions will only complain once if they receive an out-of-bounds tile. And it's only once because these functions are called frequently in rendering code. A macro WHINE_ONCE() has been added in order to not duplicate code.
2020-07-01 00:01:30 +02:00
#define WHINE_ONCE(message) \
static bool whine = true; \
if (whine) \
{ \
whine = false; \
Replace all print calls with vlog calls This is pretty straight-forward to do.
2021-02-24 00:21:29 +01:00
vlog_error(message); \
Enforce semicolons after usage of WHINE_ONCE For consistency. Since WHINE_ONCE ends with a block, the only way to make the compiler enforce it is to end it with a `do { } while (false)`.
2021-08-07 06:05:03 +02:00
} \
do { } while (false)
Add one-time OoB logs to tile-drawing functions These functions will only complain once if they receive an out-of-bounds tile. And it's only once because these functions are called frequently in rendering code. A macro WHINE_ONCE() has been added in order to not duplicate code.
2020-07-01 00:01:30 +02:00
Move from surfaces to the SDL render system Ever since VVVVVV was initially ported to C++ in 2.0, it has used surfaces from SDL. The downside is, that's all software rendering. This commit moves most things off of surfaces, and all into GPU, by using textures and SDL_Renderer. Pixel-perfect collision has been kept by keeping a copy of sprites as surfaces. There's plans for pixel-perfect collision to use masks instead of reading pixel data directly, but that's out of scope for this commit. - `graphics.reloadresources()` is now called later in `main`, because textures cannot be created without a renderer. - This commit also removes a bunch of surface functions which are no longer needed. - This also recaches target textures in certain places for d3d9. - graphics.images was converted to a fixed-size array. - fillbox and fillboxabs use SDL_RenderDrawRect instead of drawing an outline using four filled rectangles - Update my name in the credits
2023-01-07 19:28:07 +01:00
#define WHINE_ONCE_ARGS(args) \
static bool whine = true; \
if (whine) \
{ \
whine = false; \
vlog_error args; \
} \
do { } while (false)
Factor out "between" calculation to macro and func FILESYSTEM_mountAssets() has a big comment describing the magic numbers needed to grab FILENAME from a string that looks like "levels/FILENAME.vvvvvv". Instead of doing that (and having to write a comment every time the similar happens), I've written a macro (and helper function) instead that does the same thing, but clearly conveys the intent. I mean, just look at the diff. Using VVV_between() is much better than having to read that comment, and the corresponding SDL_strlcpy().
2021-05-20 23:14:08 +02:00
/* Don't call this directly; use the VVV_between macro. */
void _VVV_between(
const char* original,
const size_t left_length,
char* middle,
const size_t right_length,
const size_t middle_size
);
/* If original is "LEFTMIDDLERIGHT", VVV_between(original, "LEFT", buffer, "RIGHT")
* will put "MIDDLE" into buffer - assuming that sizeof(buffer) refers to length
* of buffer and not length of pointer to buffer.
*/
#define VVV_between(original, left, middle, right) \
_VVV_between( \
original, \
SDL_arraysize(left) - 1, \
middle, \
SDL_arraysize(right) - 1, \
sizeof(middle) \
)
Do not close game if custom level has assets issues It's quite rude to close the game entirely if there is trouble with assets. Instead, just unload the assets and gracefully return to the title screen.
2021-08-07 05:57:34 +02:00
#define MAYBE_FAIL(expr) \
do \
{ \
if (!expr) \
{ \
goto fail; \
} \
} \
while (false)
Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
Add `POS_MOD` macro and use for all positive modulos This macro is to make it so it won't be error-prone to write the semi-confusing `(a % b + b) % b` statement, and you can just use an easy macro instead. Currently, the only places a positive modulo is needed is when switching tilesets, enemies, and warp directions in the editor, as well as when getting a tile in the tower, since towers just repeat themselves vertically. Towers used this weird while-loop to sort of emulate a modulo, which isn't half-bad, but is unnecessary, and I don't think any compiler would recognize it as a modulo. (And if it's not optimized to a proper modulo... what happens if the number being moduloed is really, really big?)
2021-09-25 02:48:15 +02:00
/* Positive modulo, because C/C++'s modulo operator sucks and is negative given
* negative divisors.
* WARNING! This double- and triple- evaluates. */
#define POS_MOD(a, b) (((a) % (b) + (b)) % (b))
Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
//helperClass
class UtilityClass
{
public:
Explicitly declare void for all void parameter functions (#628) Apparently in C, if you have `void test();`, it's completely okay to do `test(2);`. The function will take in the argument, but just discard it and throw it away. It's like a trash can, and a rude one at that. If you declare it like `void test(void);`, this is prevented. This is not a problem in C++ - doing `void test();` and `test(2);` is guaranteed to result in a compile error (this also means that right now, at least in all `.cpp` files, nobody is ever calling a void parameter function with arguments and having their arguments be thrown away). However, we may not be using C++ in the future, so I just want to lay down the precedent that if a function takes in no arguments, you must explicitly declare it as such. I would've added `-Wstrict-prototypes`, but it produces an annoying warning message saying it doesn't work in C++ mode if you're compiling in C++ mode. So it can be added later.
2021-02-25 23:23:59 +01:00
UtilityClass(void);
Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
static std::string String(int _v);
Add fallback parameter to UtilityClass::Int() If necessary, the caller can provide a fallback to be returned in case the input given isn't a valid integer, instead of having to duplicate the is_number() check.
2020-08-07 06:56:35 +02:00
static int Int(const char* str, int fallback = 0);
Add UtilityClass::Int() This is simply a wrapper function around SDL_atoi(), because SDL_atoi() could call libc atoi(), and whether or not invalid input passed into the libc atoi() is undefined behavior depends on the given libc. So it's safer to just add a wrapper function that checks that the string given isn't bogus.
2020-08-07 06:28:51 +02:00
Simplify time formatting functions Here's my notes on all the existing functions and what kind of time formats they output: - Game::giventimestring(int hrs, int min, int sec) H:MM:SS MM:SS - Game::timestring() // uses game.hours/minutes/seconds H:MM:SS MM:SS - Game::partimestring() // uses game.timetrialpar (seconds) MM:SS - Game::resulttimestring() // uses game.timetrialresulttime (sec) + timetrialresultframes (1/30s) MM:SS.CC - Game::timetstring(int t) // t = seconds MM:SS - Game::timestringcenti(char* buffer, const size_t buffer_size) // uses game.hours/minutes/seconds/frames H:MM:SS.CC MM:SS.CC - UtilityClass::timestring(int t) // t = frames, 30 frames = 1 second S:CC M:SS:CC This is kind of a mess, and there's a lot of functions that do the same thing except using different variables. For localization, I also want translators to be able to localize all these time formats - many languages use the decimal comma instead of the decimal point (12:34,56) maybe some languages really prefer something like 1時02分11秒44瞬... Which I don't know to be correct, but it's good to be prepared for it and not restrict translators arbitrarily to only changing ":" and "." when we can start making the system better in the first place. I added a new function, UtilityClass::format_time. This is the place where all time formats come together, given the number of seconds and optionally frames. I have simplified the above-mentioned functions somewhat, but I haven't given them a complete refactor or renaming - I mainly made sure that they all use the same backend so I can make the formats consistent and properly localizable. (And before we start shoving more temporary char buffers everywhere just to get rid of the std::string's, maybe we need to think of a globally used working buffer of size SCREEN_WIDTH_CHARS+1, as a register of sorts, for when any line of text needs to be made or processed, then printed, and then goes unused. Maybe help.textrow, or something like that.) As for this commit, the available time formats are now more consistent and changed a little in some places. Leading zeroes for the first unit are now no longer included, time trial results and the Super Gravitron can now display hours when they went to 60 minutes before, and we now always use .CC instead of :CC. These are the formats: - H:MM:SS - H:MM:SS.CC - M:SS - M:SS.CC - S.CC (only used when always_minutes=false, for the Gravitrons) Here's what changes to the current functions: - Game::partimestring() is removed - it was used in two places, and could be replaced by game.timetstring(game.timetrialpar) - Game::giventimestring(h,m,s) and Game::timestring() are now wrappers for the other functions - The four remaining functions (Game::resulttimestring(), Game::timetstring(t), Game::timestringcenti(buffer, buffer_size) and UtilityClass::timestring(t)) are now wrappers for the "central function", UtilityClass::format_time. - UtilityClass::twodigits(int t) is now unused so it's also removed. - I also added int UtilityClass::hms_to_seconds(int h, int m, int s)
2021-12-25 17:13:46 +01:00
int hms_to_seconds(int h, int m, int s);
void format_time(char* buffer, const size_t buffer_size, int seconds, int frames, bool always_minutes);
Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
std::string timestring(int t);
Add a system for selecting between wordy/wordy2 Some languages have different spellings of wordy numbers based on the gender of the things they're counting (uno crewmate versus una trinket) or what a number's role is in the sentence (e.g. twenta out of twentu). We've always had the idea we couldn't support such complex differences though, because the game can't be adapted to know what gender each object will have and what word classes might exist in other languages, so translators would in those cases just have to forgo the wordy numbers and just let the game use "20 out of 20". A solution we came up semi-recently though (after all translations were finished except for Arabic), was to allow the translator to define however many classes of wordy numbers they need, and fill them all out. This would not need the game to be *adapted* for every language's specific grammar and word genders/classes. Instead, the translator would just choose their correct self-defined class at the time they use `wordy` in the VFormat placeholder. Something like {n|wordy|class=feminine}, or {n|wordy_feminine}. So this would benefit several languages, but we came up with the solution a little late for all languages to benefit from it. The Arabic translators asked for two separate classes of wordy numbers though, so my plan is to first just have a second list of wordy numbers (translation2 in numbers.xml), which can be accessed by passing the `wordy2` flag to VFormat, instead of `wordy`. Once 2.4 is released, we can take our time to do it properly. This would involve the ability for translators to define however many classes they need, to name them what they want, and this name would then be useable in VFormat placeholders. We can convert all existing translations to have one class defined by default, such as "wordy", or "translation" depending on implementation, but there's not so much concern for maintaining backwards compatibility here, so we can do a mass-switchover for all language files. That said, it wouldn't be too hard to add a special case for "translation" being "wordy" either. We can then ask translators if they would like to change anything with the new system in place. For now, we can use this system for Arabic, maybe Spanish since there were complaints about uno/una, and *maybe* Dutch (it has a thing where the number "one" is often capitalized differently, but it's not mandatory per se)
2024-01-06 04:15:06 +01:00
std::string number_words(int _t, const char* number_class);
Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
static bool intersects( SDL_Rect A, SDL_Rect B );
Explicitly declare void for all void parameter functions (#628) Apparently in C, if you have `void test();`, it's completely okay to do `test(2);`. The function will take in the argument, but just discard it and throw it away. It's like a trash can, and a rude one at that. If you declare it like `void test(void);`, this is prevented. This is not a problem in C++ - doing `void test();` and `test(2);` is guaranteed to result in a compile error (this also means that right now, at least in all `.cpp` files, nobody is ever calling a void parameter function with arguments and having their arguments be thrown away). However, we may not be using C++ in the future, so I just want to lay down the precedent that if a function takes in no arguments, you must explicitly declare it as such. I would've added `-Wstrict-prototypes`, but it produces an annoying warning message saying it doesn't work in C++ mode if you're compiling in C++ mode. So it can be added later.
2021-02-25 23:23:59 +01:00
void updateglow(void);
Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
int glow;
int slowsine;
int glowdir;
};
Clean up and prevent unnecessary qualifiers to self By "unnecessary qualifiers to self", I mean something like using the 'game.' qualifier for a variable on the Game class when you're inside a function on the Game class itself. This patch is to enforce consistency as most of the code doesn't have these unnecessary qualifiers. To prevent further unnecessary qualifiers to self, I made it so the extern in each header file can be omitted by using a define. That way, if someone writes something referring to 'game.' on a Game function, there will be a compile error. However, if you really need to have a reference to the global name, and you're within the same .cpp file as the implementation of that object, you can just do the extern at the function-level. A good example of this is editorinput()/editorrender()/editorlogic() in editor.cpp. In my opinion, they should probably be split off into their own separate file because editor.cpp is getting way too big, but this will do for now.
2020-09-28 04:15:06 +02:00
#ifndef HELP_DEFINITION
Allow using help/graphics/music/game/key/map/obj everywhere This commit makes `help`, `graphics`, `music`, `game`, `key`, `map`, and `obj` essentially static global objects that can be used everywhere. This is useful in case we ever need to add a new function in the future, so we don't have to bother with passing a new argument in which means we have to pass a new argument in to the function that calls that function which means having to pass a new argument into the function that calls THAT function, etc. which is a real headache when working on fan mods of the source code. Note that this changes NONE of the existing function signatures, it merely just makes those variables accessible everywhere in the same way `script` and `ed` are. Also note that some classes had to be initialized after the filesystem was initialized, but C++ would keep initializing them before the filesystem got initialized, because I *had* to put them at the top of `main.cpp`, or else they wouldn't be global variables. The only way to work around this was to use entityclass's initialization style (which I'm pretty sure entityclass of all things doesn't need to be initialized this way), where you actually initialize the class in an `init()` function, and so then you do `graphics.init()` after the filesystem initialization, AFTER doing `Graphics graphics` up at the top. I've had to do this for `graphics` (but only because its child GraphicsResources `grphx` needs to be initialized this way), `music`, and `game`. I don't think this will affect anything. Other than that, `help`, `key`, and `map` are still using the C++-intended method of having ClassName::ClassName() functions.
2020-01-29 08:35:03 +01:00
extern UtilityClass help;
Clean up and prevent unnecessary qualifiers to self By "unnecessary qualifiers to self", I mean something like using the 'game.' qualifier for a variable on the Game class when you're inside a function on the Game class itself. This patch is to enforce consistency as most of the code doesn't have these unnecessary qualifiers. To prevent further unnecessary qualifiers to self, I made it so the extern in each header file can be omitted by using a define. That way, if someone writes something referring to 'game.' on a Game function, there will be a compile error. However, if you really need to have a reference to the global name, and you're within the same .cpp file as the implementation of that object, you can just do the extern at the function-level. A good example of this is editorinput()/editorrender()/editorlogic() in editor.cpp. In my opinion, they should probably be split off into their own separate file because editor.cpp is getting way too big, but this will do for now.
2020-09-28 04:15:06 +02:00
#endif
Allow using help/graphics/music/game/key/map/obj everywhere This commit makes `help`, `graphics`, `music`, `game`, `key`, `map`, and `obj` essentially static global objects that can be used everywhere. This is useful in case we ever need to add a new function in the future, so we don't have to bother with passing a new argument in which means we have to pass a new argument in to the function that calls that function which means having to pass a new argument into the function that calls THAT function, etc. which is a real headache when working on fan mods of the source code. Note that this changes NONE of the existing function signatures, it merely just makes those variables accessible everywhere in the same way `script` and `ed` are. Also note that some classes had to be initialized after the filesystem was initialized, but C++ would keep initializing them before the filesystem got initialized, because I *had* to put them at the top of `main.cpp`, or else they wouldn't be global variables. The only way to work around this was to use entityclass's initialization style (which I'm pretty sure entityclass of all things doesn't need to be initialized this way), where you actually initialize the class in an `init()` function, and so then you do `graphics.init()` after the filesystem initialization, AFTER doing `Graphics graphics` up at the top. I've had to do this for `graphics` (but only because its child GraphicsResources `grphx` needs to be initialized this way), `music`, and `game`. I don't think this will affect anything. Other than that, `help`, `key`, and `map` are still using the C++-intended method of having ClassName::ClassName() functions.
2020-01-29 08:35:03 +01:00
Hello WWWWWWorld!
2020-01-01 21:29:24 +01:00
#endif /* UTILITYCLASS_H */
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