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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 1.37 by root, Mon Jul 21 16:51:31 2008 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
71static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } 96static inline int ctz (unsigned int x) { return __builtin_ctz (x); }
72static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); } 97static inline int popcount (unsigned int x) { return __builtin_popcount (x); }
73#else 98#else
74// count trailing zero bits and count # of one bits 99// count trailing zero bits and count # of one bits
75int ctz (unsigned int x) CONST; 100int ctz (unsigned int x) CONST;
76int popcount (unsigned int x) CONST; 101int popcount (unsigned int x) CONST;
77#endif 102#endif
… …
82 107
83// in range excluding end 108// in range excluding end
84#define IN_RANGE_EXC(val,beg,end) \ 109#define IN_RANGE_EXC(val,beg,end) \
85 ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) 110 ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg))
86 111
112// for m >= -n, ensure remainder lies between 0..n-1
113#define MOD(m,n) (((m) + (n)) % (n))
114
87// makes dynamically allocated objects zero-initialised 115// makes dynamically allocated objects zero-initialised
88struct zero_initialized { 116struct zero_initialized {
89 void *operator new (size_t s); 117 void *operator new (size_t s);
90 void operator delete (void *p, size_t s); 118 void operator delete (void *p, size_t s);
91}; 119};
92 120
93/* simplevec taken (and heavily modified), from: 121/* simplevec taken (and heavily modified), from:
94 * 122 *
95 * MICO --- a free CORBA implementation 123 * MICO --- a free CORBA implementation
96 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 124 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
97 */ 125 */
98template<class T> 126template<class T>
99struct simplevec { 127struct simplevec {
… …
345} 373}
346 374
347 375
348template<typename T> 376template<typename T>
349struct vector : simplevec<T> 377struct vector : simplevec<T>
350{ }; 378{
379};
380
381struct stringvec : simplevec<char *>
382{
383 ~stringvec ()
384 {
385 for (char **c = begin (); c != end (); c++)
386 free (*c);
387 }
388};
351 389
352#if 0 390#if 0
353template<typename T> 391template<typename T>
354struct rxvt_vec : simplevec<void *> { 392struct rxvt_vec : simplevec<void *> {
355 typedef T *iterator; 393 typedef T *iterator;
… …
363 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } 401 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])); } 402 const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); }
365}; 403};
366#endif 404#endif
367 405
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> 406template<typename T>
378struct auto_ptr { 407struct auto_ptr {
379 T *p; 408 T *p;
380 409
381 auto_ptr () : p (0) { } 410 auto_ptr () : p (0) { }
… …
432 } 461 }
433}; 462};
434 463
435typedef auto_ptr<char> auto_str; 464typedef auto_ptr<char> auto_str;
436 465
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 466#endif
457 467

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