source: libcfa/src/iostream.hfa@ b1c220a

Last change on this file since b1c220a was 96ef156, checked in by Michael Brooks <mlbrooks@…>, 9 months ago

Fix IO stream to be warning-free.
  • Property mode set to 100644
File size: 23.5 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// iostream.hfa --
8//
9// Author : Peter A. Buhr
10// Created On : Wed May 27 17:56:53 2015
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Sun Oct 13 10:49:40 2024
13// Update Count : 765
14//
15
16#pragma once
17
18#include "iterator.hfa"
19#include "Exception.hfa"
20
21// *********************************** ostream ***********************************
22
23forall( ostype & )
24trait basic_ostream {
25 // private
26 bool sepPrt$( ostype & ); // get separator state (on/off)
27 void sepReset$( ostype & ); // set separator state to default state
28 void sepReset$( ostype &, bool ); // set separator and default state
29 const char * sepGetCur$( ostype & ); // get current separator string
30 void sepSetCur$( ostype &, const char [] ); // set current separator string
31 bool getNL$( ostype & ); // get newline
32 bool setNL$( ostype &, bool ); // set newline
33 bool getANL$( ostype & ); // get auto newline (on/off)
34 bool setANL$( ostype &, bool ); // set auto newline (on/off), and return previous state
35 bool getPrt$( ostype & ); // get fmt called in output cascade
36 bool setPrt$( ostype &, bool ); // set fmt called in output cascade
37 // public
38 void nlOn( ostype & ); // turn auto-newline state on
39 void nlOff( ostype & ); // turn auto-newline state off
40
41 void sep( ostype & ); // turn separator state on
42 void nosep( ostype & ); // turn separator state off
43 bool sepOn( ostype & ); // set default state to on, and return previous state
44 bool sepOff( ostype & ); // set default state to off, and return previous state
45 const char * sepGet( ostype & ); // get separator string
46 void sepSet( ostype &, const char [] ); // set separator to string (15 character maximum)
47 const char * sepGetTuple( ostype & ); // get tuple separator string
48 void sepSetTuple( ostype &, const char [] ); // set tuple separator to string (15 character maximum)
49
50 void ends( ostype & ); // end of output statement
51 int fmt( ostype &, const char format[], ... ) __attribute__(( format(printf, 2, 3) ));
52}; // basic_ostream
53
54forall( ostype & | basic_ostream( ostype ) )
55trait ostream {
56 bool fail( ostype & ); // operation failed?
57 void clear( ostype & );
58 int flush( ostype & );
59 void open( ostype &, const char name[], const char mode[] );
60 void close( ostype & );
61 ostype & write( ostype &, const char [], size_t );
62}; // ostream
63
64// forall( T )
65// trait writeable {
66// forall( ostype & | ostream( ostype ) ) ostype & ?|?( ostype &, T );
67// }; // writeable
68
69forall( T, ostype & | ostream( ostype ) )
70trait writeable {
71 ostype & ?|?( ostype &, T );
72}; // writeable
73
74// implement writable for intrinsic types
75
76#define OSTYPE_VOID( T ) void ?|?( ostype &, T )
77#define OSTYPE_VOID_IMPL( os, T ) \
78 void ?|?( ostype & os, T t ) { \
79 (ostype &)(os | t); ends( os ); \
80 } // ?|?
81
82forall( ostype & | basic_ostream( ostype ) ) {
83 ostype & ?|?( ostype &, bool );
84 OSTYPE_VOID( bool );
85
86 ostype & ?|?( ostype &, char );
87 OSTYPE_VOID( char );
88 ostype & ?|?( ostype &, signed char );
89 OSTYPE_VOID( signed char );
90 ostype & ?|?( ostype &, unsigned char );
91 OSTYPE_VOID( unsigned char );
92
93 ostype & ?|?( ostype &, short int );
94 OSTYPE_VOID( short int );
95 ostype & ?|?( ostype &, unsigned short int );
96 OSTYPE_VOID( unsigned short int );
97 ostype & ?|?( ostype &, int );
98 OSTYPE_VOID( int );
99 ostype & ?|?( ostype &, unsigned int );
100 OSTYPE_VOID( unsigned int );
101 ostype & ?|?( ostype &, long int );
102 OSTYPE_VOID( long int );
103 ostype & ?|?( ostype &, long long int );
104 OSTYPE_VOID( long long int );
105 ostype & ?|?( ostype &, unsigned long int );
106 OSTYPE_VOID( unsigned long int );
107 ostype & ?|?( ostype &, unsigned long long int );
108 OSTYPE_VOID( unsigned long long int );
109 #if defined( __SIZEOF_INT128__ )
110 ostype & ?|?( ostype &, int128 );
111 OSTYPE_VOID( int128 );
112 ostype & ?|?( ostype &, unsigned int128 );
113 OSTYPE_VOID( unsigned int128 );
114 #endif // __SIZEOF_INT128__
115
116 ostype & ?|?( ostype &, float );
117 OSTYPE_VOID( float );
118 ostype & ?|?( ostype &, double );
119 OSTYPE_VOID( double );
120 ostype & ?|?( ostype &, long double );
121 OSTYPE_VOID( long double );
122
123 ostype & ?|?( ostype &, float _Complex );
124 OSTYPE_VOID( float _Complex );
125 ostype & ?|?( ostype &, double _Complex );
126 OSTYPE_VOID( double _Complex );
127 ostype & ?|?( ostype &, long double _Complex );
128 OSTYPE_VOID( long double _Complex );
129
130 ostype & ?|?( ostype &, const char [] );
131 OSTYPE_VOID( const char [] );
132 // ostype & ?|?( ostype &, const char16_t [] );
133 #if ! ( __ARM_ARCH_ISA_ARM == 1 && __ARM_32BIT_STATE == 1 ) // char32_t == wchar_t => ambiguous
134 // ostype & ?|?( ostype &, const char32_t [] );
135 #endif // ! ( __ARM_ARCH_ISA_ARM == 1 && __ARM_32BIT_STATE == 1 )
136 // ostype & ?|?( ostype &, const wchar_t [] );
137 ostype & ?|?( ostype &, const void * );
138 OSTYPE_VOID( const void * );
139
140 // FIX-ME: does not work so using macros
141 // forall( T | { ostype & ?|?( ostype &, T ); } )
142 // void ?|?( ostype & os, T );
143
144 // manipulators
145 ostype & ?|?( ostype &, ostype & (*)( ostype & ) );
146 OSTYPE_VOID( ostype & (*)( ostype & ) );
147
148 ostype & nl( ostype & );
149 ostype & nonl( ostype & );
150 ostype & nlOn( ostype & );
151 ostype & nlOff( ostype & );
152
153 ostype & sepVal( ostype & );
154 ostype & sepTupleVal( ostype & );
155 ostype & sep( ostype & );
156 ostype & nosep( ostype & );
157 ostype & sepOn( ostype & );
158 ostype & sepOff( ostype & );
159} // distribution
160
161// tuples
162forall( ostype &, T, List ... | writeable( T, ostype ) | { ostype & ?|?( ostype &, List ); } ) {
163 ostype & ?|?( ostype & os, T arg, List rest );
164 void ?|?( ostype & os, T arg, List rest );
165} // distribution
166
167// writes the range [begin, end) to the given stream
168forall( ostype &, elt_type | writeable( elt_type, ostype ), iterator_type | iterator( iterator_type, elt_type ) ) {
169 void write( iterator_type begin, iterator_type end, ostype & os );
170 void write_reverse( iterator_type begin, iterator_type end, ostype & os );
171} // distribution
172
173// *********************************** manipulators ***********************************
174
175struct _Ostream_Flags {
176 unsigned char eng:1; // engineering notation
177 unsigned char neg:1; // val is negative
178 unsigned char pc:1; // precision specified
179 unsigned char left:1; // left justify
180 unsigned char nobsdp:1; // base prefix / decimal point
181 unsigned char sign:1; // plus / minus sign
182 unsigned char pad0:1; // zero pad
183};
184
185// FIXME: Should be an anonymous inner union of _Ostream_Manip.
186// Hoisting manually to work around warning of #294.
187union _Ostream_Manip_Mode {
188 unsigned char all;
189 _Ostream_Flags flags;
190};
191
192forall( T )
193struct _Ostream_Manip {
194 T val; // polymorphic base-type
195 int wd, pc; // width, precision: signed for computations
196 char base; // numeric base / floating-point style
197 inline _Ostream_Manip_Mode;
198}; // _Ostream_Manip
199
200// *********************************** integral ***********************************
201
202#define INTEGRAL_FMT_DECL( T, CODE ) \
203static inline { \
204 _Ostream_Manip(T) bin( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'b', { .all = 0 } }; } \
205 _Ostream_Manip(T) oct( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'o', { .all = 0 } }; } \
206 _Ostream_Manip(T) hex( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'x', { .all = 0 } }; } \
207 _Ostream_Manip(T) wd( unsigned int wd, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = 0, .base = CODE, { .all = 0 } }; } \
208 _Ostream_Manip(T) wd( unsigned int wd, unsigned int pc, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = pc, .base = CODE, { .flags.pc = true } }; } \
209 _Ostream_Manip(T) & wd( unsigned int wd, _Ostream_Manip(T) & fmt ) { fmt.wd = wd; return fmt; } \
210 _Ostream_Manip(T) & wd( unsigned int wd, unsigned int pc, _Ostream_Manip(T) & fmt ) { fmt.wd = wd; fmt.pc = pc; fmt.flags.pc = true; return fmt; } \
211 _Ostream_Manip(T) & left( _Ostream_Manip(T) & fmt ) { fmt.flags.left = true; return fmt; } \
212 _Ostream_Manip(T) & upcase( _Ostream_Manip(T) & fmt ) { if ( fmt.base == 'x' || fmt.base == 'b' ) fmt.base -= 32; /* upper case */ return fmt; } \
213 _Ostream_Manip(T) & nobase( _Ostream_Manip(T) & fmt ) { fmt.flags.nobsdp = true; return fmt; } \
214 _Ostream_Manip(T) & pad0( _Ostream_Manip(T) & fmt ) { fmt.flags.pad0 = true; return fmt; } \
215 _Ostream_Manip(T) sign( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = CODE, { .flags.sign = true } }; } \
216 _Ostream_Manip(T) & sign( _Ostream_Manip(T) & fmt ) { fmt.flags.sign = true; return fmt; } \
217} /* distribution */ \
218forall( ostype & | basic_ostream( ostype ) ) { \
219 ostype & ?|?( ostype & os, _Ostream_Manip(T) f ); \
220 OSTYPE_VOID( _Ostream_Manip(T) ); \
221} // ?|?
222
223INTEGRAL_FMT_DECL( signed char, 'd' )
224INTEGRAL_FMT_DECL( unsigned char, 'u' )
225INTEGRAL_FMT_DECL( signed short int, 'd' )
226INTEGRAL_FMT_DECL( unsigned short int, 'u' )
227INTEGRAL_FMT_DECL( signed int, 'd' )
228INTEGRAL_FMT_DECL( unsigned int, 'u' )
229INTEGRAL_FMT_DECL( signed long int, 'd' )
230INTEGRAL_FMT_DECL( unsigned long int, 'u' )
231INTEGRAL_FMT_DECL( signed long long int, 'd' )
232INTEGRAL_FMT_DECL( unsigned long long int, 'u' )
233#if defined( __SIZEOF_INT128__ )
234INTEGRAL_FMT_DECL( int128, 'd' )
235INTEGRAL_FMT_DECL( unsigned int128, 'u' )
236#endif // __SIZEOF_INT128__
237
238// *********************************** floating point ***********************************
239
240// Default suffix for values with no fraction is "."
241#define FLOATING_POINT_FMT_DECL( T ) \
242static inline { \
243 _Ostream_Manip(T) hex( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'a', { .all = 0 } }; } \
244 _Ostream_Manip(T) sci( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'e', { .all = 0 } }; } \
245 _Ostream_Manip(T) eng( T val ) { return (_Ostream_Manip(T))@{ .val = val, 1, -1, .base = 'g', { .flags.eng = true } }; } \
246 _Ostream_Manip(T) wd( unsigned int wd, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = 0, .base = 'g', { .all = 0 } }; } \
247 _Ostream_Manip(T) wd( unsigned int wd, unsigned int pc, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = pc, .base = 'f', { .flags.pc = true } }; } \
248 _Ostream_Manip(T) ws( unsigned int wd, unsigned int pc, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = pc, .base = 'g', { .flags.pc = true } }; } \
249 _Ostream_Manip(T) & wd( unsigned int wd, _Ostream_Manip(T) & fmt ) { if ( fmt.flags.eng ) fmt.base = 'f'; fmt.wd = wd; return fmt; } \
250 _Ostream_Manip(T) & wd( unsigned int wd, unsigned int pc, _Ostream_Manip(T) & fmt ) { \
251 if ( fmt.flags.eng ) fmt.base = 'f'; fmt.wd = wd; fmt.pc = pc; fmt.flags.pc = true; return fmt; } \
252 _Ostream_Manip(T) & ws( unsigned int wd, unsigned int pc, _Ostream_Manip(T) & fmt ) { fmt.wd = wd; fmt.pc = pc; fmt.flags.pc = true; return fmt; } \
253 _Ostream_Manip(T) & left( _Ostream_Manip(T) & fmt ) { fmt.flags.left = true; return fmt; } \
254 _Ostream_Manip(T) upcase( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'G', { .all = 0 } }; } \
255 _Ostream_Manip(T) & upcase( _Ostream_Manip(T) & fmt ) { fmt.base -= 32; /* upper case */ return fmt; } \
256 _Ostream_Manip(T) & pad0( _Ostream_Manip(T) & fmt ) { fmt.flags.pad0 = true; return fmt; } \
257 _Ostream_Manip(T) sign( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'g', { .flags.sign = true } }; } \
258 _Ostream_Manip(T) & sign( _Ostream_Manip(T) & fmt ) { fmt.flags.sign = true; return fmt; } \
259 _Ostream_Manip(T) nodp( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'g', { .flags.nobsdp = true } }; } \
260 _Ostream_Manip(T) & nodp( _Ostream_Manip(T) & fmt ) { fmt.flags.nobsdp = true; return fmt; } \
261 _Ostream_Manip(T) unit( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'g', { .flags.nobsdp = true } }; } \
262 _Ostream_Manip(T) & unit( _Ostream_Manip(T) & fmt ) { fmt.flags.nobsdp = true; return fmt; } \
263} /* distribution */ \
264forall( ostype & | basic_ostream( ostype ) ) { \
265 ostype & ?|?( ostype & os, _Ostream_Manip(T) f ); \
266 OSTYPE_VOID( _Ostream_Manip(T) ); \
267} // ?|?
268
269FLOATING_POINT_FMT_DECL( double )
270FLOATING_POINT_FMT_DECL( long double )
271
272// *********************************** character ***********************************
273
274static inline {
275 _Ostream_Manip(char) bin( char c ) { return (_Ostream_Manip(char))@{ .val = c, .wd = 1, .pc = 0, .base = 'b', { .all = 0 } }; }
276 _Ostream_Manip(char) oct( char c ) { return (_Ostream_Manip(char))@{ .val = c, .wd = 1, .pc = 0, .base = 'o', { .all = 0 } }; }
277 _Ostream_Manip(char) hex( char c ) { return (_Ostream_Manip(char))@{ .val = c, .wd = 1, .pc = 0, .base = 'x', { .all = 0 } }; }
278 _Ostream_Manip(char) wd( unsigned int wd, char c ) { return (_Ostream_Manip(char))@{ c, wd, 0, .base = 'c', { .all = 0 } }; }
279 _Ostream_Manip(char) & wd( unsigned int wd, _Ostream_Manip(char) & fmt ) { fmt.wd = wd; return fmt; }
280 _Ostream_Manip(char) & left( _Ostream_Manip(char) & fmt ) { fmt.flags.left = true; return fmt; }
281 _Ostream_Manip(char) & upcase( _Ostream_Manip(char) & fmt ) { if ( fmt.base == 'x' || fmt.base == 'b' ) fmt.base -= 32; /* upper case */ return fmt; }
282 _Ostream_Manip(char) & nobase( _Ostream_Manip(char) & fmt ) { fmt.flags.nobsdp = true; return fmt; }
283} // distribution
284forall( ostype & | basic_ostream( ostype ) ) {
285 ostype & ?|?( ostype & os, _Ostream_Manip(char) f );
286 OSTYPE_VOID( _Ostream_Manip(char) ); \
287} // ?|?
288
289// *********************************** C string ***********************************
290
291static inline {
292 _Ostream_Manip(const char *) bin( const char s[] ) { return (_Ostream_Manip(const char *))@{ .val = s, .wd = 1, .pc = 0, .base = 'b', { .all = 0 } }; }
293 _Ostream_Manip(const char *) oct( const char s[] ) { return (_Ostream_Manip(const char *))@{ .val = s, .wd = 1, .pc = 0, .base = 'o', { .all = 0 } }; }
294 _Ostream_Manip(const char *) hex( const char s[] ) { return (_Ostream_Manip(const char *))@{ .val = s, .wd = 1, .pc = 0, .base = 'x', { .all = 0 } }; }
295 _Ostream_Manip(const char *) wd( unsigned int wd, const char s[] ) { return (_Ostream_Manip(const char *))@{ s, wd, 0, .base = 's', { .all = 0 } }; }
296 _Ostream_Manip(const char *) wd( unsigned int wd, unsigned int pc, const char s[] ) { return (_Ostream_Manip(const char *))@{ s, .wd = wd, .pc = pc, .base = 's', { .flags.pc = true } }; }
297 _Ostream_Manip(const char *) & wd( unsigned int wd, _Ostream_Manip(const char *) & fmt ) { fmt.wd = wd; return fmt; }
298 _Ostream_Manip(const char *) & wd( unsigned int wd, unsigned int pc, _Ostream_Manip(const char *) & fmt ) { fmt.wd = wd; fmt.pc = pc; fmt.flags.pc = true; return fmt; }
299 _Ostream_Manip(const char *) & left( _Ostream_Manip(const char *) & fmt ) { fmt.flags.left = true; return fmt; }
300 _Ostream_Manip(const char *) & nobase( _Ostream_Manip(const char *) & fmt ) { fmt.flags.nobsdp = true; return fmt; }
301} // distribution
302forall( ostype & | basic_ostream( ostype ) ) {
303 ostype & ?|?( ostype & os, _Ostream_Manip(const char *) f );
304 OSTYPE_VOID( _Ostream_Manip(const char *) ); \
305} // ?|?
306
307// *********************************** istream ***********************************
308
309forall( istype & )
310trait basic_istream {
311 // private
312 bool getANL$( istype & ); // get scan newline (on/off)
313 bool setANL$( istype &, bool ); // set scan newline (on/off)
314 // public
315 void nlOn( istype & ); // read newline
316 void nlOff( istype & ); // scan newline
317 int fmt( istype &, const char format[], ... ) __attribute__(( format(scanf, 2, 3) ));
318 istype & ungetc( char, istype & );
319 bool eof( istype & );
320 void clear( istype & );
321}; // basic_istream
322
323forall( istype & | basic_istream( istype ) )
324trait istream {
325 bool fail( istype & );
326 void open( istype & is, const char name[], const char mode[] );
327 void open( istype & is, const char name[] );
328 void close( istype & is );
329 istype & read( istype &, char [], size_t );
330}; // istream
331
332forall( T )
333trait readable {
334 forall( istype & | istream( istype ) ) istype & ?|?( istype &, T );
335}; // readable
336
337forall( istype & | basic_istream( istype ) ) {
338 istype & ?|?( istype &, bool & );
339
340 istype & ?|?( istype &, char & );
341 istype & ?|?( istype &, signed char & );
342 istype & ?|?( istype &, unsigned char & );
343
344 istype & ?|?( istype &, short int & );
345 istype & ?|?( istype &, unsigned short int & );
346 istype & ?|?( istype &, int & );
347 istype & ?|?( istype &, unsigned int & );
348 istype & ?|?( istype &, long int & );
349 istype & ?|?( istype &, unsigned long int & );
350 istype & ?|?( istype &, long long int & );
351 istype & ?|?( istype &, unsigned long long int & );
352 #if defined( __SIZEOF_INT128__ )
353 istype & ?|?( istype &, int128 & );
354 istype & ?|?( istype &, unsigned int128 & );
355 #endif // __SIZEOF_INT128__
356
357 istype & ?|?( istype &, float & );
358 istype & ?|?( istype &, double & );
359 istype & ?|?( istype &, long double & );
360
361 istype & ?|?( istype &, float _Complex & );
362 istype & ?|?( istype &, double _Complex & );
363 istype & ?|?( istype &, long double _Complex & );
364
365 // This is too restrictive as it prevents building a format in a string and using that format.
366 // inline istype & ?|?( istype &, char [] ) { // possible error, too restrictive to change
367 // _Static_assert( false, "reading a character array without a maximum length is unsafe. Use input manipulator \"wdi( N, s )\", where \"char s[N]\" or fmt( s )." );
368 // }
369 istype & ?|?( istype &, const char [] ); // match text
370
371 // manipulators
372 istype & ?|?( istype &, istype & (*)( istype & ) );
373 istype & nl( istype & is );
374 istype & nlOn( istype & );
375 istype & nlOff( istype & );
376} // distribution
377
378// *********************************** exceptions ***********************************
379
380ExceptionDecl( end_of_file ); // read encounters end of file
381ExceptionDecl( missing_data ); // read finds no appropriate data
382ExceptionDecl( cstring_length ); // character string size exceeded
383ExceptionDecl( data_range ); // value too large for numerical type
384
385// *********************************** manipulators ***********************************
386
387// skip does not compose with other C string manipulators.
388struct _Istream_Cskip {
389 const char * scanset;
390 unsigned wd; // scan width
391}; // _Istream_Cskip
392
393static inline {
394 _Istream_Cskip skip( const char scanset[] ) { return (_Istream_Cskip)@{ .scanset = scanset, .wd = 0 }; }
395 _Istream_Cskip skip( unsigned int wd ) { return (_Istream_Cskip)@{ .scanset = 0p, .wd = wd }; }
396} // distribution
397
398struct _Istream_str_base {
399 union {
400 const char * scanset;
401 char delimiters[3]; // [0] => left, [1] => right
402 };
403 int wd; // width
404 union {
405 unsigned char all;
406 struct {
407 unsigned char ignore:1; // do not change input argument
408 unsigned char inex:1; // include/exclude characters in scanset
409 unsigned char delimiter:1; // delimit character(s)
410 unsigned char rwd:1; // read width
411 } flags;
412 };
413}; // _Istream_str_base
414
415struct _Istream_Cwidth {
416 char * s;
417 inline _Istream_str_base;
418}; // _Istream_Cwidth
419
420// Restrict nesting of input manipulators to those combinations that make sense.
421
422struct _Istream_Cquoted {
423 _Istream_Cwidth cstr;
424}; // _Istream_Cquoted
425
426struct _Istream_Cstr {
427 _Istream_Cwidth cstr;
428}; // _Istream_Cstr
429
430static inline {
431 // width must include room for null terminator, (gcc) scanf does not allow a 0 width => wd > 1 (1 char and null) and rd > 0 (1 char);
432 _Istream_Cwidth wdi( unsigned int wd, char s[] ) {
433 if ( wd <= 1 ) throwResume ExceptionInst( cstring_length ); // minimum 1 character and null terminator
434 return (_Istream_Cwidth)@{ .s = s, { {.scanset = 0p}, .wd = wd, {.all = 0} } };
435 }
436 _Istream_Cwidth wdi( unsigned int wd, unsigned int rwd, char s[] ) {
437 if ( wd <= 1 || wd <= rwd ) throwResume ExceptionInst( cstring_length ); // minimum 1 character, null terminator, plus subset
438 return (_Istream_Cwidth)@{ .s = s, { {.scanset = 0p}, .wd = rwd, {.flags.rwd = true} } };
439 }
440 _Istream_Cstr & getline( _Istream_Cwidth & f, const char delimiter = '\n' ) {
441 f.delimiters[0] = delimiter; f.delimiters[1] = '\0'; f.flags.delimiter = true; return (_Istream_Cstr &)f;
442 }
443 _Istream_Cquoted quoted( char & ch, const char Ldelimiter = '\'', const char Rdelimiter = '\0' ) {
444 return (_Istream_Cquoted)@{ { .s = &ch, { {.delimiters = { Ldelimiter, Rdelimiter, '\1' }}, .wd = 1, {.flags.rwd = true} } } };
445 }
446 _Istream_Cquoted & quoted( _Istream_Cwidth & f, const char Ldelimiter = '"', const char Rdelimiter = '\0' ) {
447 f.delimiters[0] = Ldelimiter; f.delimiters[1] = Rdelimiter; f.delimiters[2] = '\0';
448 return (_Istream_Cquoted &)f;
449 }
450 _Istream_Cstr & incl( const char scanset[], _Istream_Cwidth & f ) { f.scanset = scanset; f.flags.inex = false; return (_Istream_Cstr &)f; }
451 _Istream_Cstr & excl( const char scanset[], _Istream_Cwidth & f ) { f.scanset = scanset; f.flags.inex = true; return (_Istream_Cstr &)f; }
452 _Istream_Cstr ignore( const char s[] ) { return (_Istream_Cstr)@{ { .s = (char *)s, { {.scanset = 0p}, .wd = -1, {.flags.ignore = true} } } }; }
453 _Istream_Cstr & ignore( _Istream_Cwidth & f ) { f.flags.ignore = true; return (_Istream_Cstr &)f; }
454 _Istream_Cquoted & ignore( _Istream_Cquoted & f ) { f.cstr.flags.ignore = true; return (_Istream_Cquoted &)f; }
455 _Istream_Cstr & ignore( _Istream_Cstr & f ) { f.cstr.flags.ignore = true; return (_Istream_Cstr &)f; }
456} // distribution
457
458forall( istype & | basic_istream( istype ) ) {
459 istype & ?|?( istype & is, _Istream_Cskip f );
460 istype & ?|?( istype & is, _Istream_Cquoted f );
461 istype & ?|?( istype & is, _Istream_Cstr f );
462 static inline istype & ?|?( istype & is, _Istream_Cwidth f ) { return is | *(_Istream_Cstr *)&f; }
463} // distribution
464
465// FIXME: `| sized(T)` seems to be working around a bug, but it is logically unnecessary.
466// Including sized(T) causes a warning that is telling us to get rid of it.
467#pragma GCC diagnostic push
468#pragma GCC diagnostic ignored "-Wunused-parameter"
469forall( T & | sized(T) )
470struct _Istream_Manip {
471 T & val; // polymorphic base-type
472 int wd; // width
473 bool ignore; // do not change input argument
474}; // _Istream_Manip
475#pragma GCC diagnostic pop
476
477#define INPUT_FMT_DECL( T ) \
478static inline { \
479 _Istream_Manip(T) wdi( unsigned int wd, T & val ) { return (_Istream_Manip(T))@{ .val = val, .wd = wd, .ignore = false }; } \
480 _Istream_Manip(T) ignore( const T & val ) { return (_Istream_Manip(T))@{ .val = (T &)val, .wd = -1, .ignore = true }; } \
481 _Istream_Manip(T) & ignore( _Istream_Manip(T) & fmt ) { fmt.ignore = true; return fmt; } \
482} /* distribution */ \
483forall( istype & | basic_istream( istype ) ) { \
484 istype & ?|?( istype & is, _Istream_Manip(T) f ); \
485} // ?|?
486
487INPUT_FMT_DECL( char )
488INPUT_FMT_DECL( signed char )
489INPUT_FMT_DECL( unsigned char )
490INPUT_FMT_DECL( signed short int )
491INPUT_FMT_DECL( unsigned short int )
492INPUT_FMT_DECL( signed int )
493INPUT_FMT_DECL( unsigned int )
494INPUT_FMT_DECL( signed long int )
495INPUT_FMT_DECL( unsigned long int )
496INPUT_FMT_DECL( signed long long int )
497INPUT_FMT_DECL( unsigned long long int )
498
499INPUT_FMT_DECL( float )
500INPUT_FMT_DECL( double )
501INPUT_FMT_DECL( long double )
502
503INPUT_FMT_DECL( float _Complex )
504INPUT_FMT_DECL( double _Complex )
505INPUT_FMT_DECL( long double _Complex )
506
507// *********************************** time ***********************************
508
509#include <time_t.hfa> // Duration (constructors) / Time (constructors)
510
511forall( ostype & | ostream( ostype ) ) {
512 ostype & ?|?( ostype & os, Duration dur );
513 OSTYPE_VOID( Duration );
514 ostype & ?|?( ostype & os, Time time );
515 OSTYPE_VOID( Time );
516} // distribution
517
518forall( istype & | istream( istype ), E | CfaEnum( E ) | Serial(E) )
519istype & ?|?( istype &, E & );
520
521forall( ostype & | ostream( ostype ), E | CfaEnum( E ) ) {
522 ostype & ?|?( ostype &, E );
523 OSTYPE_VOID( E );
524}
525
526// Local Variables: //
527// tab-width: 4 //
528// End: //
Note: See TracBrowser for help on using the repository browser.