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/cvs/rxvt-unicode/src/rxvtutil.h
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Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.26 by root, Tue Jan 31 16:57:35 2006 UTC vs.
Revision 1.39 by root, Fri Sep 4 15:40:13 2009 UTC

1#ifndef RXVT_UTIL_H 1#ifndef RXVT_UTIL_H
2#define RXVT_UTIL_H 2#define RXVT_UTIL_H
3 3
4#include <cstdlib> 4#include <cstdlib>
5#include <cstring> 5#include <cstring>
6
7using namespace std;
6 8
7#define PP_CONCAT_(a, b) a ## b 9#define PP_CONCAT_(a, b) a ## b
8#define PP_CONCAT(a, b) PP_CONCAT_(a, b) 10#define PP_CONCAT(a, b) PP_CONCAT_(a, b)
9#define PP_STRINGIFY_(a) #a 11#define PP_STRINGIFY_(a) #a
10#define PP_STRINGIFY(a) PP_STRINGIFY_(a) 12#define PP_STRINGIFY(a) PP_STRINGIFY_(a)
11 13
12// actually, some gcc-3.x versions work, too 14#define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4))
13#define HAVE_GCC_BUILTINS (__GNUC__ >= 4)
14 15
15#ifndef __attribute__
16# if __GNUC__ 16#if __GNUC__ >= 4
17# if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2) 17# define rxvt_attribute(x) __attribute__(x)
18# define __attribute__(x) 18# define expect(expr,value) __builtin_expect ((expr),(value))
19# endif 19#else
20# endif
21# define __attribute__(x) 20# define rxvt_attribute(x)
21# define expect(expr,value) (expr)
22#endif 22#endif
23 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)
29
24#define NORETURN __attribute__ ((noreturn)) 30#define NORETURN rxvt_attribute ((noreturn))
25#define UNUSED __attribute__ ((unused)) 31#define UNUSED rxvt_attribute ((unused))
26#define CONST __attribute__ ((const)) 32#define CONST rxvt_attribute ((const))
27 33
28// increases code size unless -fno-enforce-eh-specs 34// increases code size unless -fno-enforce-eh-specs
29#if __GNUC__ 35#if __GNUC__
30# define NOTHROW 36# define NOTHROW
31# define THROW(x) 37# define THROW(x)
… …
64T lerp (T a, U b, P p) 70T lerp (T a, U b, P p)
65{ 71{
66 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;
67} 73}
68 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
69// some bit functions, xft fuck me plenty 94// some bit functions, xft fuck me plenty
70#if HAVE_GCC_BUILTINS 95#if HAVE_GCC_BUILTINS
96/* netbsd stupidly defines popcount itself and puts it into string.h */
71static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } 97static inline int rxvt_ctz (unsigned int x) { return __builtin_ctz (x); }
72static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); } 98static inline int rxvt_popcount (unsigned int x) { return __builtin_popcount (x); }
73#else 99#else
74// count trailing zero bits and count # of one bits 100// count trailing zero bits and count # of one bits
75int ctz (unsigned int x) CONST; 101int rxvt_ctz (unsigned int x) CONST;
76int popcount (unsigned int x) CONST; 102int rxvt_popcount (unsigned int x) CONST;
77#endif 103#endif
78 104
79// in range including end 105// in range including end
80#define IN_RANGE_INC(val,beg,end) \ 106#define IN_RANGE_INC(val,beg,end) \
81 ((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))
82 108
83// in range excluding end 109// in range excluding end
84#define IN_RANGE_EXC(val,beg,end) \ 110#define IN_RANGE_EXC(val,beg,end) \
85 ((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))
86 112
113// for m >= -n, ensure remainder lies between 0..n-1
114#define MOD(m,n) (((m) + (n)) % (n))
115
87// makes dynamically allocated objects zero-initialised 116// makes dynamically allocated objects zero-initialised
88struct zero_initialized { 117struct zero_initialized
118{
89 void *operator new (size_t s); 119 void *operator new (size_t s);
90 void operator delete (void *p, size_t s); 120 void operator delete (void *p, size_t s);
91}; 121};
92 122
93/* simplevec taken (and heavily modified), from: 123/* simplevec taken (and heavily modified), from:
94 * 124 *
95 * MICO --- a free CORBA implementation 125 * MICO --- a free CORBA implementation
96 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 126 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
97 */ 127 */
98template<class T> 128template<class T>
99struct simplevec { 129struct simplevec
130{
100 typedef T* iterator; 131 typedef T* iterator;
101 typedef const T* const_iterator; 132 typedef const T* const_iterator;
102 typedef unsigned long size_type; 133 typedef unsigned long size_type;
103 134
104private: 135private:
… …
345} 376}
346 377
347 378
348template<typename T> 379template<typename T>
349struct vector : simplevec<T> 380struct vector : simplevec<T>
350{ }; 381{
382};
383
384struct stringvec : simplevec<char *>
385{
386 ~stringvec ()
387 {
388 for (char **c = begin (); c != end (); c++)
389 free (*c);
390 }
391};
351 392
352#if 0 393#if 0
353template<typename T> 394template<typename T>
354struct rxvt_vec : simplevec<void *> { 395struct rxvt_vec : simplevec<void *>
396{
355 typedef T *iterator; 397 typedef T *iterator;
356 398
357 void push_back (T d) { simplevec<void *>::push_back ((void *)d); } 399 void push_back (T d) { simplevec<void *>::push_back ((void *)d); }
358 T pop_back () { return (T*)simplevec<void *>::pop_back (); } 400 T pop_back () { return (T*)simplevec<void *>::pop_back (); }
359 void erase (int i) { erase (begin () + i); } 401 void erase (int i) { erase (begin () + i); }
… …
363 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } 405 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); }
364 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])); }
365}; 407};
366#endif 408#endif
367 409
368template <typename I, typename T>
369I find (I first, I last, const T& value)
370{
371 while (first != last && *first != value)
372 ++first;
373
374 return first;
375}
376
377template<typename T> 410template<typename T>
378struct auto_ptr { 411struct auto_ptr
412{
379 T *p; 413 T *p;
380 414
381 auto_ptr () : p (0) { } 415 auto_ptr () : p (0) { }
382 auto_ptr (T *a) : p (a) { } 416 auto_ptr (T *a) : p (a) { }
383 417
… …
432 } 466 }
433}; 467};
434 468
435typedef auto_ptr<char> auto_str; 469typedef auto_ptr<char> auto_str;
436 470
437struct stringvec : simplevec<char *>
438{
439 ~stringvec ()
440 {
441 for (char **c = begin (); c != end (); c++)
442 free (*c);
443 }
444};
445
446// return a very temporary (and never deallocated) buffer. keep small.
447void *rxvt_temp_buf (int len);
448
449template<typename T>
450static inline T *
451rxvt_temp_buf (int len)
452{
453 return (T *)rxvt_temp_buf (len * sizeof (T));
454}
455
456#endif 471#endif
457 472

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