rxvt-unicode/src/rxvtutil.h

#ifndef RXVT_UTIL_H
#define RXVT_UTIL_H

#include <stdlib.h>
#include <string.h>
#include "ecb.h"
#include "estl.h"

#include "emman.h"

// increases code size unless -fno-enforce-eh-specs
#if __GNUC__
# define NOTHROW
# define THROW(x)
#else
# define NOTHROW  throw()
# define THROW(x) throw x
#endif

// various utility functions
template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; }
template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; }

template<typename T, typename U, typename V> static inline T    clamp    (T  v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; }
template<typename T, typename U, typename V> static inline void clamp_it (T &v, U a, V b) {    v = v < (T)a ? a : v >(T)b ? b : v; }

template<typename T> static inline T squared_diff (T a, T b) { return (a - b) * (a - b); }

// linear interpolation
template<typename T, typename U, typename P>
static inline T
lerp (T a, U b, P p)
{
  return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
}

// return a very temporary (and never deallocated) buffer. keep small.
void *rxvt_temp_buf (int len);

template<typename T>
static inline T *
rxvt_temp_buf (int len)
{
  return (T *)rxvt_temp_buf (len * sizeof (T));
}

// in range including end
#define IN_RANGE_INC(val,beg,end) \
  ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))

// in range excluding end
#define IN_RANGE_EXC(val,beg,end) \
  ((unsigned int)(val) - (unsigned int)(beg) <  (unsigned int)(end) - (unsigned int)(beg))

// for m >= -n, ensure remainder lies between 0..n-1
#define MOD(m,n) (((m) + (n)) % (n))

// makes dynamically allocated objects zero-initialised
struct zero_initialized
{
  void *operator new (size_t s);
  void operator delete (void *p, size_t s);
};

struct stringvec : simplevec<char *>
{
  ~stringvec ()
  {
    for (char **c = begin (); c != end (); c++)
      free (*c);
  }
};

#if 0
template<typename T>
struct rxvt_vec : simplevec<void *>
{
  typedef T *iterator;

  void push_back (T d) { simplevec<void *>::push_back ((void *)d); }
  T pop_back () { return (T*)simplevec<void *>::pop_back (); }
  void erase (int i) { erase (begin () + i); }
  void erase (iterator i) { simplevec<void *>::erase ((void **)i); }
  iterator begin () const { return (iterator)simplevec<void *>::begin (); }
  iterator end () const { return (iterator)simplevec<void *>::end (); }
  T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); }
  const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); }
};
#endif

typedef estl::scoped_array<char> auto_str;

#endif

Revision:	1.62
Committed:	Wed Nov 12 12:12:02 2014 UTC (9 years, 6 months ago) by sf-exg
Content type:	text/plain
Branch:	MAIN
Changes since 1.61:	+0 -5 lines
Log Message:	Make new/delete compatible with C++11 and change new to use rxvt_malloc.
#	User	Rev	Content
1	root	1.1	#ifndef RXVT_UTIL_H
2			#define RXVT_UTIL_H
3
4	sf-exg	1.47	#include <stdlib.h>
5			#include <string.h>
6	sf-exg	1.45	#include "ecb.h"
7	sf-exg	1.49	#include "estl.h"
8	root	1.4
9	root	1.58	#include "emman.h"
10
11	root	1.24	// increases code size unless -fno-enforce-eh-specs
12			#if __GNUC__
13			# define NOTHROW
14			# define THROW(x)
15			#else
16			# define NOTHROW throw()
17			# define THROW(x) throw x
18			#endif
19
20	root	1.16	// various utility functions
21	sf-exg	1.51	template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; }
22			template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; }
23	root	1.13
24			template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; }
25			template<typename T, typename U, typename V> static inline void clamp_it (T &v, U a, V b) { v = v < (T)a ? a : v >(T)b ? b : v; }
26
27	sf-exg	1.51	template<typename T> static inline T squared_diff (T a, T b) { return (a - b) * (a - b); }
28	root	1.25
29	root	1.21	// linear interpolation
30			template<typename T, typename U, typename P>
31	root	1.55	static inline T
32			lerp (T a, U b, P p)
33	root	1.21	{
34	root	1.26	return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
35	root	1.21	}
36
37	ayin	1.32	// return a very temporary (and never deallocated) buffer. keep small.
38			void *rxvt_temp_buf (int len);
39
40			template<typename T>
41			static inline T *
42			rxvt_temp_buf (int len)
43			{
44			return (T )rxvt_temp_buf (len sizeof (T));
45			}
46
47	root	1.11	// in range including end
48			#define IN_RANGE_INC(val,beg,end) \
49	root	1.9	((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
50	root	1.1
51	root	1.11	// in range excluding end
52			#define IN_RANGE_EXC(val,beg,end) \
53			((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg))
54
55	ayin	1.36	// for m >= -n, ensure remainder lies between 0..n-1
56			#define MOD(m,n) (((m) + (n)) % (n))
57
58	root	1.16	// makes dynamically allocated objects zero-initialised
59	root	1.38	struct zero_initialized
60			{
61	root	1.4	void *operator new (size_t s);
62			void operator delete (void *p, size_t s);
63			};
64
65	ayin	1.32	struct stringvec : simplevec<char *>
66			{
67			~stringvec ()
68			{
69			for (char **c = begin (); c != end (); c++)
70			free (*c);
71			}
72			};
73
74	root	1.34	#if 0
75	root	1.1	template<typename T>
76	root	1.38	struct rxvt_vec : simplevec<void *>
77			{
78	root	1.1	typedef T *iterator;
79
80			void push_back (T d) { simplevec<void >::push_back ((void )d); }
81			T pop_back () { return (T)simplevec<void >::pop_back (); }
82			void erase (int i) { erase (begin () + i); }
83			void erase (iterator i) { simplevec<void >::erase ((void *)i); }
84			iterator begin () const { return (iterator)simplevec<void *>::begin (); }
85			iterator end () const { return (iterator)simplevec<void *>::end (); }
86			T &operator [] (int i) { return * (T ) (& (( (simplevec<void > )this)[i])); }
87			const T &operator [] (int i) const { return * (const T ) (& (( (const simplevec<void > )this)[i])); }
88			};
89	root	1.34	#endif
90	root	1.1
91	sf-exg	1.61	typedef estl::scoped_array<char> auto_str;
92	root	1.20
93	root	1.1	#endif
94