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/cvs/rxvt-unicode/src/rxvtutil.h
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Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.30 by root, Tue Nov 20 17:44:44 2007 UTC vs.
Revision 1.39 by root, Fri Sep 4 15:40:13 2009 UTC

… …
11#define PP_STRINGIFY_(a) #a 11#define PP_STRINGIFY_(a) #a
12#define PP_STRINGIFY(a) PP_STRINGIFY_(a) 12#define PP_STRINGIFY(a) PP_STRINGIFY_(a)
13 13
14#define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4)) 14#define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4))
15 15
16#if __GNUC__ >= 3 16#if __GNUC__ >= 4
17# define rxvt_attribute(x) __attribute__(x) 17# define rxvt_attribute(x) __attribute__(x)
18# define expect(expr,value) __builtin_expect ((expr),(value))
18#else 19#else
19# define rxvt_attribute(x) 20# define rxvt_attribute(x)
21# define expect(expr,value) (expr)
20#endif 22#endif
23
24// put into ifs if you are very sure that the expression
25// is mostly true or mosty false. note that these return
26// booleans, not the expression.
27#define expect_false(expr) expect ((expr) != 0, 0)
28#define expect_true(expr) expect ((expr) != 0, 1)
21 29
22#define NORETURN rxvt_attribute ((noreturn)) 30#define NORETURN rxvt_attribute ((noreturn))
23#define UNUSED rxvt_attribute ((unused)) 31#define UNUSED rxvt_attribute ((unused))
24#define CONST rxvt_attribute ((const)) 32#define CONST rxvt_attribute ((const))
25 33
… …
62T lerp (T a, U b, P p) 70T lerp (T a, U b, P p)
63{ 71{
64 return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; 72 return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
65} 73}
66 74
75template <typename I, typename T>
76I find (I first, I last, const T& value)
77{
78 while (first != last && *first != value)
79 ++first;
80
81 return first;
82}
83
84// return a very temporary (and never deallocated) buffer. keep small.
85void *rxvt_temp_buf (int len);
86
87template<typename T>
88static inline T *
89rxvt_temp_buf (int len)
90{
91 return (T *)rxvt_temp_buf (len * sizeof (T));
92}
93
67// some bit functions, xft fuck me plenty 94// some bit functions, xft fuck me plenty
68#if HAVE_GCC_BUILTINS 95#if HAVE_GCC_BUILTINS
96/* netbsd stupidly defines popcount itself and puts it into string.h */
69static inline int ctz (unsigned int x) { return __builtin_ctz (x); } 97static inline int rxvt_ctz (unsigned int x) { return __builtin_ctz (x); }
70static inline int popcount (unsigned int x) { return __builtin_popcount (x); } 98static inline int rxvt_popcount (unsigned int x) { return __builtin_popcount (x); }
71#else 99#else
72// count trailing zero bits and count # of one bits 100// count trailing zero bits and count # of one bits
73int ctz (unsigned int x) CONST; 101int rxvt_ctz (unsigned int x) CONST;
74int popcount (unsigned int x) CONST; 102int rxvt_popcount (unsigned int x) CONST;
75#endif 103#endif
76 104
77// in range including end 105// in range including end
78#define IN_RANGE_INC(val,beg,end) \ 106#define IN_RANGE_INC(val,beg,end) \
79 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) 107 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
80 108
81// in range excluding end 109// in range excluding end
82#define IN_RANGE_EXC(val,beg,end) \ 110#define IN_RANGE_EXC(val,beg,end) \
83 ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) 111 ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg))
84 112
113// for m >= -n, ensure remainder lies between 0..n-1
114#define MOD(m,n) (((m) + (n)) % (n))
115
85// makes dynamically allocated objects zero-initialised 116// makes dynamically allocated objects zero-initialised
86struct zero_initialized { 117struct zero_initialized
118{
87 void *operator new (size_t s); 119 void *operator new (size_t s);
88 void operator delete (void *p, size_t s); 120 void operator delete (void *p, size_t s);
89}; 121};
90 122
91/* simplevec taken (and heavily modified), from: 123/* simplevec taken (and heavily modified), from:
92 * 124 *
93 * MICO --- a free CORBA implementation 125 * MICO --- a free CORBA implementation
94 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 126 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
95 */ 127 */
96template<class T> 128template<class T>
97struct simplevec { 129struct simplevec
130{
98 typedef T* iterator; 131 typedef T* iterator;
99 typedef const T* const_iterator; 132 typedef const T* const_iterator;
100 typedef unsigned long size_type; 133 typedef unsigned long size_type;
101 134
102private: 135private:
… …
343} 376}
344 377
345 378
346template<typename T> 379template<typename T>
347struct vector : simplevec<T> 380struct vector : simplevec<T>
348{ }; 381{
382};
383
384struct stringvec : simplevec<char *>
385{
386 ~stringvec ()
387 {
388 for (char **c = begin (); c != end (); c++)
389 free (*c);
390 }
391};
349 392
350#if 0 393#if 0
351template<typename T> 394template<typename T>
352struct rxvt_vec : simplevec<void *> { 395struct rxvt_vec : simplevec<void *>
396{
353 typedef T *iterator; 397 typedef T *iterator;
354 398
355 void push_back (T d) { simplevec<void *>::push_back ((void *)d); } 399 void push_back (T d) { simplevec<void *>::push_back ((void *)d); }
356 T pop_back () { return (T*)simplevec<void *>::pop_back (); } 400 T pop_back () { return (T*)simplevec<void *>::pop_back (); }
357 void erase (int i) { erase (begin () + i); } 401 void erase (int i) { erase (begin () + i); }
… …
361 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } 405 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); }
362 const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); } 406 const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); }
363}; 407};
364#endif 408#endif
365 409
366template <typename I, typename T>
367I find (I first, I last, const T& value)
368{
369 while (first != last && *first != value)
370 ++first;
371
372 return first;
373}
374
375template<typename T> 410template<typename T>
376struct auto_ptr { 411struct auto_ptr
412{
377 T *p; 413 T *p;
378 414
379 auto_ptr () : p (0) { } 415 auto_ptr () : p (0) { }
380 auto_ptr (T *a) : p (a) { } 416 auto_ptr (T *a) : p (a) { }
381 417
… …
430 } 466 }
431}; 467};
432 468
433typedef auto_ptr<char> auto_str; 469typedef auto_ptr<char> auto_str;
434 470
435struct stringvec : simplevec<char *>
436{
437 ~stringvec ()
438 {
439 for (char **c = begin (); c != end (); c++)
440 free (*c);
441 }
442};
443
444// return a very temporary (and never deallocated) buffer. keep small.
445void *rxvt_temp_buf (int len);
446
447template<typename T>
448static inline T *
449rxvt_temp_buf (int len)
450{
451 return (T *)rxvt_temp_buf (len * sizeof (T));
452}
453
454#endif 471#endif
455 472

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