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3 | |
3 | |
4 | #include <cstdlib> |
4 | #include <cstdlib> |
5 | #include <cstring> |
5 | #include <cstring> |
6 | |
6 | |
7 | using namespace std; |
7 | using namespace std; |
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8 | |
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9 | #define ARRAY_LENGTH(v) (sizeof (v) / sizeof ((v)[0])) |
8 | |
10 | |
9 | #define PP_CONCAT_(a, b) a ## b |
11 | #define PP_CONCAT_(a, b) a ## b |
10 | #define PP_CONCAT(a, b) PP_CONCAT_(a, b) |
12 | #define PP_CONCAT(a, b) PP_CONCAT_(a, b) |
11 | #define PP_STRINGIFY_(a) #a |
13 | #define PP_STRINGIFY_(a) #a |
12 | #define PP_STRINGIFY(a) PP_STRINGIFY_(a) |
14 | #define PP_STRINGIFY(a) PP_STRINGIFY_(a) |
13 | |
15 | |
14 | // actually, some gcc-3.x versions work, too |
16 | #define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4)) |
15 | #define HAVE_GCC_BUILTINS (__GNUC__ >= 4) |
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16 | |
17 | |
17 | #ifndef __attribute__ |
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18 | # if __GNUC__ |
18 | #if __GNUC__ >= 4 |
19 | # if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2) |
19 | # define rxvt_attribute(x) __attribute__(x) |
20 | # define __attribute__(x) |
20 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
21 | # endif |
21 | #else |
22 | # endif |
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23 | # define __attribute__(x) |
22 | # define rxvt_attribute(x) |
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23 | # define expect(expr,value) (expr) |
24 | #endif |
24 | #endif |
25 | |
25 | |
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26 | // put into ifs if you are very sure that the expression |
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27 | // is mostly true or mostly false. note that these return |
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28 | // booleans, not the expression. |
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29 | #define expect_false(expr) expect ((expr) != 0, 0) |
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30 | #define expect_true(expr) expect ((expr) != 0, 1) |
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31 | |
26 | #define NORETURN __attribute__ ((noreturn)) |
32 | #define NORETURN rxvt_attribute ((noreturn)) |
27 | #define UNUSED __attribute__ ((unused)) |
33 | #define UNUSED rxvt_attribute ((unused)) |
28 | #define CONST __attribute__ ((const)) |
34 | #define CONST rxvt_attribute ((const)) |
29 | |
35 | |
30 | // increases code size unless -fno-enforce-eh-specs |
36 | // increases code size unless -fno-enforce-eh-specs |
31 | #if __GNUC__ |
37 | #if __GNUC__ |
32 | # define NOTHROW |
38 | # define NOTHROW |
33 | # define THROW(x) |
39 | # define THROW(x) |
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66 | T lerp (T a, U b, P p) |
72 | T lerp (T a, U b, P p) |
67 | { |
73 | { |
68 | return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; |
74 | return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; |
69 | } |
75 | } |
70 | |
76 | |
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77 | template <typename I, typename T> |
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78 | I find (I first, I last, const T& value) |
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79 | { |
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80 | while (first != last && *first != value) |
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81 | ++first; |
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82 | |
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83 | return first; |
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84 | } |
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85 | |
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86 | // return a very temporary (and never deallocated) buffer. keep small. |
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87 | void *rxvt_temp_buf (int len); |
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88 | |
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89 | template<typename T> |
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90 | static inline T * |
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91 | rxvt_temp_buf (int len) |
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92 | { |
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93 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
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94 | } |
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95 | |
71 | // some bit functions, xft fuck me plenty |
96 | // some bit functions, xft fuck me plenty |
72 | #if HAVE_GCC_BUILTINS |
97 | #if HAVE_GCC_BUILTINS |
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98 | /* netbsd stupidly defines popcount itself and puts it into string.h */ |
73 | static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } |
99 | static inline int rxvt_ctz (unsigned int x) { return __builtin_ctz (x); } |
74 | static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); } |
100 | static inline int rxvt_popcount (unsigned int x) { return __builtin_popcount (x); } |
75 | #else |
101 | #else |
76 | // count trailing zero bits and count # of one bits |
102 | // count trailing zero bits and count # of one bits |
77 | int ctz (unsigned int x) CONST; |
103 | int rxvt_ctz (unsigned int x) CONST; |
78 | int popcount (unsigned int x) CONST; |
104 | int rxvt_popcount (unsigned int x) CONST; |
79 | #endif |
105 | #endif |
80 | |
106 | |
81 | // in range including end |
107 | // in range including end |
82 | #define IN_RANGE_INC(val,beg,end) \ |
108 | #define IN_RANGE_INC(val,beg,end) \ |
83 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
109 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
84 | |
110 | |
85 | // in range excluding end |
111 | // in range excluding end |
86 | #define IN_RANGE_EXC(val,beg,end) \ |
112 | #define IN_RANGE_EXC(val,beg,end) \ |
87 | ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) |
113 | ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) |
88 | |
114 | |
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115 | // for m >= -n, ensure remainder lies between 0..n-1 |
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116 | #define MOD(m,n) (((m) + (n)) % (n)) |
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117 | |
89 | // makes dynamically allocated objects zero-initialised |
118 | // makes dynamically allocated objects zero-initialised |
90 | struct zero_initialized { |
119 | struct zero_initialized |
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120 | { |
91 | void *operator new (size_t s); |
121 | void *operator new (size_t s); |
92 | void operator delete (void *p, size_t s); |
122 | void operator delete (void *p, size_t s); |
93 | }; |
123 | }; |
94 | |
124 | |
95 | /* simplevec taken (and heavily modified), from: |
125 | /* simplevec taken (and heavily modified), from: |
96 | * |
126 | * |
97 | * MICO --- a free CORBA implementation |
127 | * MICO --- a free CORBA implementation |
98 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
128 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
99 | */ |
129 | */ |
100 | template<class T> |
130 | template<class T> |
101 | struct simplevec { |
131 | struct simplevec |
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132 | { |
102 | typedef T* iterator; |
133 | typedef T* iterator; |
103 | typedef const T* const_iterator; |
134 | typedef const T* const_iterator; |
104 | typedef unsigned long size_type; |
135 | typedef unsigned long size_type; |
105 | |
136 | |
106 | private: |
137 | private: |
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347 | } |
378 | } |
348 | |
379 | |
349 | |
380 | |
350 | template<typename T> |
381 | template<typename T> |
351 | struct vector : simplevec<T> |
382 | struct vector : simplevec<T> |
352 | { }; |
383 | { |
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384 | }; |
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385 | |
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386 | struct stringvec : simplevec<char *> |
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387 | { |
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388 | ~stringvec () |
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389 | { |
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390 | for (char **c = begin (); c != end (); c++) |
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391 | free (*c); |
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392 | } |
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393 | }; |
353 | |
394 | |
354 | #if 0 |
395 | #if 0 |
355 | template<typename T> |
396 | template<typename T> |
356 | struct rxvt_vec : simplevec<void *> { |
397 | struct rxvt_vec : simplevec<void *> |
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398 | { |
357 | typedef T *iterator; |
399 | typedef T *iterator; |
358 | |
400 | |
359 | void push_back (T d) { simplevec<void *>::push_back ((void *)d); } |
401 | void push_back (T d) { simplevec<void *>::push_back ((void *)d); } |
360 | T pop_back () { return (T*)simplevec<void *>::pop_back (); } |
402 | T pop_back () { return (T*)simplevec<void *>::pop_back (); } |
361 | void erase (int i) { erase (begin () + i); } |
403 | void erase (int i) { erase (begin () + i); } |
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365 | T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } |
407 | T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } |
366 | const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); } |
408 | const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); } |
367 | }; |
409 | }; |
368 | #endif |
410 | #endif |
369 | |
411 | |
370 | template <typename I, typename T> |
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371 | I find (I first, I last, const T& value) |
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372 | { |
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373 | while (first != last && *first != value) |
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374 | ++first; |
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375 | |
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376 | return first; |
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377 | } |
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378 | |
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379 | template<typename T> |
412 | template<typename T> |
380 | struct auto_ptr { |
413 | struct auto_ptr |
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414 | { |
381 | T *p; |
415 | T *p; |
382 | |
416 | |
383 | auto_ptr () : p (0) { } |
417 | auto_ptr () : p (0) { } |
384 | auto_ptr (T *a) : p (a) { } |
418 | auto_ptr (T *a) : p (a) { } |
385 | |
419 | |
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434 | } |
468 | } |
435 | }; |
469 | }; |
436 | |
470 | |
437 | typedef auto_ptr<char> auto_str; |
471 | typedef auto_ptr<char> auto_str; |
438 | |
472 | |
439 | struct stringvec : simplevec<char *> |
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440 | { |
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441 | ~stringvec () |
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442 | { |
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443 | for (char **c = begin (); c != end (); c++) |
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444 | free (*c); |
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445 | } |
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446 | }; |
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447 | |
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448 | // return a very temporary (and never deallocated) buffer. keep small. |
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449 | void *rxvt_temp_buf (int len); |
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450 | |
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451 | template<typename T> |
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452 | static inline T * |
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453 | rxvt_temp_buf (int len) |
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454 | { |
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455 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
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456 | } |
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457 | |
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458 | #endif |
473 | #endif |
459 | |
474 | |