source: libcfa/src/iostream.hfa@ b28ce93

Last change on this file since b28ce93 was 0528d79, checked in by Peter A. Buhr <pabuhr@…>, 4 months ago

fix bugs reading enumerators
  • Property mode set to 100644
File size: 24.2 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 : Mon May 12 17:29:29 2025
13// Update Count : 769
14//
15
16#pragma once
17
18#include "iterator.hfa"
19#include "Exception.hfa"
20
21// *********************************** ostream ***********************************
22
23forall( ostype & )
24struct basic_ostream_data {
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 & )
55struct ostream_data {
56 inline basic_ostream_data( ostype );
57 bool (*fail)( ostype & ); // operation failed?
58 void (*clearerr)( ostype & );
59 int (*flush)( ostype & );
60 void (*open)( ostype &, const char name[], const char mode[] );
61 void (*close)( ostype & );
62 ostype & (*write)( ostype &, const char [], size_t );
63}; // ostream
64
65forall( ostype & )
66trait basic_ostream {
67 basic_ostream_data(ostype) const & basic_ostream_table;
68};
69
70forall( ostype & | basic_ostream( ostype ) )
71trait ostream {
72 ostream_data(ostype) const & ostream_table;
73};
74
75// forall( T )
76// trait writeable {
77// forall( ostype & | ostream( ostype ) ) ostype & ?|?( ostype &, T );
78// }; // writeable
79
80forall( T, ostype & | ostream( ostype ) )
81trait writeable {
82 ostype & ?|?( ostype &, T );
83}; // writeable
84
85// implement writable for intrinsic types
86
87#define OSTYPE_VOID( T ) void ?|?( ostype &, T )
88#define OSTYPE_VOID_IMPL( os, T ) \
89 void ?|?( ostype & os, T t ) { \
90 (ostype &)(os | t); \
91 basic_ostream_table.ends( os ); \
92 } // ?|?
93
94forall( ostype & | basic_ostream( ostype ) ) {
95 ostype & ?|?( ostype &, bool );
96 OSTYPE_VOID( bool );
97
98 ostype & ?|?( ostype &, char );
99 OSTYPE_VOID( char );
100 ostype & ?|?( ostype &, signed char );
101 OSTYPE_VOID( signed char );
102 ostype & ?|?( ostype &, unsigned char );
103 OSTYPE_VOID( unsigned char );
104
105 ostype & ?|?( ostype &, short int );
106 OSTYPE_VOID( short int );
107 ostype & ?|?( ostype &, unsigned short int );
108 OSTYPE_VOID( unsigned short int );
109 ostype & ?|?( ostype &, int );
110 OSTYPE_VOID( int );
111 ostype & ?|?( ostype &, unsigned int );
112 OSTYPE_VOID( unsigned int );
113 ostype & ?|?( ostype &, long int );
114 OSTYPE_VOID( long int );
115 ostype & ?|?( ostype &, long long int );
116 OSTYPE_VOID( long long int );
117 ostype & ?|?( ostype &, unsigned long int );
118 OSTYPE_VOID( unsigned long int );
119 ostype & ?|?( ostype &, unsigned long long int );
120 OSTYPE_VOID( unsigned long long int );
121 #if defined( __SIZEOF_INT128__ )
122 ostype & ?|?( ostype &, int128 );
123 OSTYPE_VOID( int128 );
124 ostype & ?|?( ostype &, unsigned int128 );
125 OSTYPE_VOID( unsigned int128 );
126 #endif // __SIZEOF_INT128__
127
128 ostype & ?|?( ostype &, float );
129 OSTYPE_VOID( float );
130 ostype & ?|?( ostype &, double );
131 OSTYPE_VOID( double );
132 ostype & ?|?( ostype &, long double );
133 OSTYPE_VOID( long double );
134
135 ostype & ?|?( ostype &, float _Complex );
136 OSTYPE_VOID( float _Complex );
137 ostype & ?|?( ostype &, double _Complex );
138 OSTYPE_VOID( double _Complex );
139 ostype & ?|?( ostype &, long double _Complex );
140 OSTYPE_VOID( long double _Complex );
141
142 ostype & ?|?( ostype &, const char [] );
143 OSTYPE_VOID( const char [] );
144 // ostype & ?|?( ostype &, const char16_t [] );
145 #if ! ( __ARM_ARCH_ISA_ARM == 1 && __ARM_32BIT_STATE == 1 ) // char32_t == wchar_t => ambiguous
146 // ostype & ?|?( ostype &, const char32_t [] );
147 #endif // ! ( __ARM_ARCH_ISA_ARM == 1 && __ARM_32BIT_STATE == 1 )
148 // ostype & ?|?( ostype &, const wchar_t [] );
149 ostype & ?|?( ostype &, const void * );
150 OSTYPE_VOID( const void * );
151
152 // FIX-ME: does not work so using macros
153 // forall( T | { ostype & ?|?( ostype &, T ); } )
154 // void ?|?( ostype & os, T );
155
156 // manipulators
157 ostype & ?|?( ostype &, ostype & (*)( ostype & ) );
158 OSTYPE_VOID( ostype & (*)( ostype & ) );
159
160 ostype & nl( ostype & );
161 ostype & nonl( ostype & );
162 ostype & nlOn( ostype & );
163 ostype & nlOff( ostype & );
164
165 ostype & sepVal( ostype & );
166 ostype & sepTupleVal( ostype & );
167 ostype & sep( ostype & );
168 ostype & nosep( ostype & );
169 ostype & sepOn( ostype & );
170 ostype & sepOff( ostype & );
171} // distribution
172
173// tuples
174forall( ostype &, T, List ... | writeable( T, ostype ) | { ostype & ?|?( ostype &, List ); } ) {
175 ostype & ?|?( ostype & os, T arg, List rest );
176 void ?|?( ostype & os, T arg, List rest );
177} // distribution
178
179// writes the range [begin, end) to the given stream
180forall( ostype &, elt_type | writeable( elt_type, ostype ), iterator_type | iterator( iterator_type, elt_type ) ) {
181 void write( iterator_type begin, iterator_type end, ostype & os );
182 void write_reverse( iterator_type begin, iterator_type end, ostype & os );
183} // distribution
184
185// *********************************** manipulators ***********************************
186
187struct _Ostream_Flags {
188 unsigned char eng:1; // engineering notation
189 unsigned char neg:1; // val is negative
190 unsigned char pc:1; // precision specified
191 unsigned char left:1; // left justify
192 unsigned char nobsdp:1; // base prefix / decimal point
193 unsigned char sign:1; // plus / minus sign
194 unsigned char pad0:1; // zero pad
195};
196
197// FIXME: Should be an anonymous inner union of _Ostream_Manip.
198// Hoisting manually to work around warning of #294.
199union _Ostream_Manip_Mode {
200 unsigned char all;
201 _Ostream_Flags flags;
202};
203
204forall( T )
205struct _Ostream_Manip {
206 T val; // polymorphic base-type
207 int wd, pc; // width, precision: signed for computations
208 char base; // numeric base / floating-point style
209 inline _Ostream_Manip_Mode;
210}; // _Ostream_Manip
211
212// *********************************** integral ***********************************
213
214#define INTEGRAL_FMT_DECL( T, CODE ) \
215static inline { \
216 _Ostream_Manip(T) bin( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'b', { .all = 0 } }; } \
217 _Ostream_Manip(T) oct( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'o', { .all = 0 } }; } \
218 _Ostream_Manip(T) hex( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'x', { .all = 0 } }; } \
219 _Ostream_Manip(T) wd( unsigned int wd, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = 0, .base = CODE, { .all = 0 } }; } \
220 _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 } }; } \
221 _Ostream_Manip(T) & wd( unsigned int wd, _Ostream_Manip(T) & fmt ) { fmt.wd = wd; return fmt; } \
222 _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; } \
223 _Ostream_Manip(T) & left( _Ostream_Manip(T) & fmt ) { fmt.flags.left = true; return fmt; } \
224 _Ostream_Manip(T) & upcase( _Ostream_Manip(T) & fmt ) { if ( fmt.base == 'x' || fmt.base == 'b' ) fmt.base -= 32; /* upper case */ return fmt; } \
225 _Ostream_Manip(T) & nobase( _Ostream_Manip(T) & fmt ) { fmt.flags.nobsdp = true; return fmt; } \
226 _Ostream_Manip(T) & pad0( _Ostream_Manip(T) & fmt ) { fmt.flags.pad0 = true; return fmt; } \
227 _Ostream_Manip(T) sign( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = CODE, { .flags.sign = true } }; } \
228 _Ostream_Manip(T) & sign( _Ostream_Manip(T) & fmt ) { fmt.flags.sign = true; return fmt; } \
229} /* distribution */ \
230forall( ostype & | basic_ostream( ostype ) ) { \
231 ostype & ?|?( ostype & os, _Ostream_Manip(T) f ); \
232 OSTYPE_VOID( _Ostream_Manip(T) ); \
233} // ?|?
234
235INTEGRAL_FMT_DECL( signed char, 'd' )
236INTEGRAL_FMT_DECL( unsigned char, 'u' )
237INTEGRAL_FMT_DECL( signed short int, 'd' )
238INTEGRAL_FMT_DECL( unsigned short int, 'u' )
239INTEGRAL_FMT_DECL( signed int, 'd' )
240INTEGRAL_FMT_DECL( unsigned int, 'u' )
241INTEGRAL_FMT_DECL( signed long int, 'd' )
242INTEGRAL_FMT_DECL( unsigned long int, 'u' )
243INTEGRAL_FMT_DECL( signed long long int, 'd' )
244INTEGRAL_FMT_DECL( unsigned long long int, 'u' )
245#if defined( __SIZEOF_INT128__ )
246INTEGRAL_FMT_DECL( int128, 'd' )
247INTEGRAL_FMT_DECL( unsigned int128, 'u' )
248#endif // __SIZEOF_INT128__
249
250// *********************************** floating point ***********************************
251
252// Default suffix for values with no fraction is "."
253#define FLOATING_POINT_FMT_DECL( T ) \
254static inline { \
255 _Ostream_Manip(T) hex( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'a', { .all = 0 } }; } \
256 _Ostream_Manip(T) sci( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'e', { .all = 0 } }; } \
257 _Ostream_Manip(T) eng( T val ) { return (_Ostream_Manip(T))@{ .val = val, 1, -1, .base = 'g', { .flags.eng = true } }; } \
258 _Ostream_Manip(T) wd( unsigned int wd, T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = wd, .pc = 0, .base = 'g', { .all = 0 } }; } \
259 _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 } }; } \
260 _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 } }; } \
261 _Ostream_Manip(T) & wd( unsigned int wd, _Ostream_Manip(T) & fmt ) { if ( fmt.flags.eng ) fmt.base = 'f'; fmt.wd = wd; return fmt; } \
262 _Ostream_Manip(T) & wd( unsigned int wd, unsigned int pc, _Ostream_Manip(T) & fmt ) { \
263 if ( fmt.flags.eng ) fmt.base = 'f'; fmt.wd = wd; fmt.pc = pc; fmt.flags.pc = true; return fmt; } \
264 _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; } \
265 _Ostream_Manip(T) & left( _Ostream_Manip(T) & fmt ) { fmt.flags.left = true; return fmt; } \
266 _Ostream_Manip(T) upcase( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'G', { .all = 0 } }; } \
267 _Ostream_Manip(T) & upcase( _Ostream_Manip(T) & fmt ) { fmt.base -= 32; /* upper case */ return fmt; } \
268 _Ostream_Manip(T) & pad0( _Ostream_Manip(T) & fmt ) { fmt.flags.pad0 = true; return fmt; } \
269 _Ostream_Manip(T) sign( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'g', { .flags.sign = true } }; } \
270 _Ostream_Manip(T) & sign( _Ostream_Manip(T) & fmt ) { fmt.flags.sign = true; return fmt; } \
271 _Ostream_Manip(T) nodp( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'g', { .flags.nobsdp = true } }; } \
272 _Ostream_Manip(T) & nodp( _Ostream_Manip(T) & fmt ) { fmt.flags.nobsdp = true; return fmt; } \
273 _Ostream_Manip(T) unit( T val ) { return (_Ostream_Manip(T))@{ .val = val, .wd = 1, .pc = 0, .base = 'g', { .flags.nobsdp = true } }; } \
274 _Ostream_Manip(T) & unit( _Ostream_Manip(T) & fmt ) { fmt.flags.nobsdp = true; return fmt; } \
275} /* distribution */ \
276forall( ostype & | basic_ostream( ostype ) ) { \
277 ostype & ?|?( ostype & os, _Ostream_Manip(T) f ); \
278 OSTYPE_VOID( _Ostream_Manip(T) ); \
279} // ?|?
280
281FLOATING_POINT_FMT_DECL( double )
282FLOATING_POINT_FMT_DECL( long double )
283
284// *********************************** character ***********************************
285
286static inline {
287 _Ostream_Manip(char) bin( char c ) { return (_Ostream_Manip(char))@{ .val = c, .wd = 1, .pc = 0, .base = 'b', { .all = 0 } }; }
288 _Ostream_Manip(char) oct( char c ) { return (_Ostream_Manip(char))@{ .val = c, .wd = 1, .pc = 0, .base = 'o', { .all = 0 } }; }
289 _Ostream_Manip(char) hex( char c ) { return (_Ostream_Manip(char))@{ .val = c, .wd = 1, .pc = 0, .base = 'x', { .all = 0 } }; }
290 _Ostream_Manip(char) wd( unsigned int wd, char c ) { return (_Ostream_Manip(char))@{ c, wd, 0, .base = 'c', { .all = 0 } }; }
291 _Ostream_Manip(char) & wd( unsigned int wd, _Ostream_Manip(char) & fmt ) { fmt.wd = wd; return fmt; }
292 _Ostream_Manip(char) & left( _Ostream_Manip(char) & fmt ) { fmt.flags.left = true; return fmt; }
293 _Ostream_Manip(char) & upcase( _Ostream_Manip(char) & fmt ) { if ( fmt.base == 'x' || fmt.base == 'b' ) fmt.base -= 32; /* upper case */ return fmt; }
294 _Ostream_Manip(char) & nobase( _Ostream_Manip(char) & fmt ) { fmt.flags.nobsdp = true; return fmt; }
295} // distribution
296forall( ostype & | basic_ostream( ostype ) ) {
297 ostype & ?|?( ostype & os, _Ostream_Manip(char) f );
298 OSTYPE_VOID( _Ostream_Manip(char) ); \
299} // ?|?
300
301// *********************************** C string ***********************************
302
303static inline {
304 _Ostream_Manip(const char *) bin( const char s[] ) { return (_Ostream_Manip(const char *))@{ .val = s, .wd = 1, .pc = 0, .base = 'b', { .all = 0 } }; }
305 _Ostream_Manip(const char *) oct( const char s[] ) { return (_Ostream_Manip(const char *))@{ .val = s, .wd = 1, .pc = 0, .base = 'o', { .all = 0 } }; }
306 _Ostream_Manip(const char *) hex( const char s[] ) { return (_Ostream_Manip(const char *))@{ .val = s, .wd = 1, .pc = 0, .base = 'x', { .all = 0 } }; }
307 _Ostream_Manip(const char *) wd( unsigned int wd, const char s[] ) { return (_Ostream_Manip(const char *))@{ s, wd, 0, .base = 's', { .all = 0 } }; }
308 _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 } }; }
309 _Ostream_Manip(const char *) & wd( unsigned int wd, _Ostream_Manip(const char *) & fmt ) { fmt.wd = wd; return fmt; }
310 _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; }
311 _Ostream_Manip(const char *) & left( _Ostream_Manip(const char *) & fmt ) { fmt.flags.left = true; return fmt; }
312 _Ostream_Manip(const char *) & nobase( _Ostream_Manip(const char *) & fmt ) { fmt.flags.nobsdp = true; return fmt; }
313} // distribution
314forall( ostype & | basic_ostream( ostype ) ) {
315 ostype & ?|?( ostype & os, _Ostream_Manip(const char *) f );
316 OSTYPE_VOID( _Ostream_Manip(const char *) ); \
317} // ?|?
318
319
320// *********************************** istream ***********************************
321
322
323forall( istype & )
324struct basic_istream_data {
325 // private
326 bool (*getANL$)( istype & ); // get scan newline (on/off)
327 bool (*setANL$)( istype &, bool ); // set scan newline (on/off)
328 // public
329 void (*nlOn)( istype & ); // read newline
330 void (*nlOff)( istype & ); // scan newline
331 int (*fmt)( istype &, const char format[], ... ) __attribute__(( format(scanf, 2, 3) ));
332 istype & (*ungetc)( char, istype & );
333 bool (*eof)( istype & );
334 void (*clearerr)( istype & );
335}; // basic_istream
336
337forall( istype & )
338struct istream_data {
339 inline basic_istream_data( istype );
340 bool (*fail)( istype & );
341 void (*open)( istype & is, const char name[], const char mode[] );
342 void (*open)( istype & is, const char name[] );
343 void (*close)( istype & is );
344 istype & (*read)( istype &, char [], size_t );
345}; // istream
346
347forall( istype & )
348trait basic_istream {
349 basic_istream_data(istype) const & basic_istream_table;
350};
351
352forall( istype & | basic_istream( istype ) )
353trait istream {
354 istream_data(istype) const & istream_table;
355};
356
357forall( T )
358trait readable {
359 forall( istype & | istream( istype ) ) istype & ?|?( istype &, T );
360}; // readable
361
362forall( istype & | basic_istream( istype ) ) {
363 istype & ?|?( istype &, bool & );
364
365 istype & ?|?( istype &, char & );
366 istype & ?|?( istype &, signed char & );
367 istype & ?|?( istype &, unsigned char & );
368
369 istype & ?|?( istype &, short int & );
370 istype & ?|?( istype &, unsigned short int & );
371 istype & ?|?( istype &, int & );
372 istype & ?|?( istype &, unsigned int & );
373 istype & ?|?( istype &, long int & );
374 istype & ?|?( istype &, unsigned long int & );
375 istype & ?|?( istype &, long long int & );
376 istype & ?|?( istype &, unsigned long long int & );
377 #if defined( __SIZEOF_INT128__ )
378 istype & ?|?( istype &, int128 & );
379 istype & ?|?( istype &, unsigned int128 & );
380 #endif // __SIZEOF_INT128__
381
382 istype & ?|?( istype &, float & );
383 istype & ?|?( istype &, double & );
384 istype & ?|?( istype &, long double & );
385
386 istype & ?|?( istype &, float _Complex & );
387 istype & ?|?( istype &, double _Complex & );
388 istype & ?|?( istype &, long double _Complex & );
389
390 // This is too restrictive as it prevents building a format in a string and using that format.
391 // inline istype & ?|?( istype &, char [] ) { // possible error, too restrictive to change
392 // _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 )." );
393 // }
394 istype & ?|?( istype &, const char [] ); // match text
395
396 // manipulators
397 istype & ?|?( istype &, istype & (*)( istype & ) );
398 istype & nl( istype & is );
399 istype & nlOn( istype & );
400 istype & nlOff( istype & );
401} // distribution
402
403// *********************************** exceptions ***********************************
404
405ExceptionDecl( end_of_file ); // read encounters end of file
406ExceptionDecl( missing_data ); // read finds no appropriate data
407ExceptionDecl( cstring_length ); // character string size exceeded
408ExceptionDecl( data_range ); // value too large for numerical type
409
410// *********************************** manipulators ***********************************
411
412// skip does not compose with other C string manipulators.
413struct _Istream_Cskip {
414 const char * scanset;
415 unsigned wd; // scan width
416}; // _Istream_Cskip
417
418static inline {
419 _Istream_Cskip skip( const char scanset[] ) { return (_Istream_Cskip)@{ .scanset = scanset, .wd = 0 }; }
420 _Istream_Cskip skip( unsigned int wd ) { return (_Istream_Cskip)@{ .scanset = 0p, .wd = wd }; }
421} // distribution
422
423struct _Istream_str_base {
424 union {
425 const char * scanset;
426 char delimiters[3]; // [0] => left, [1] => right
427 };
428 int wd; // width
429 union {
430 unsigned char all;
431 struct {
432 unsigned char ignore:1; // do not change input argument
433 unsigned char inex:1; // include/exclude characters in scanset
434 unsigned char delimiter:1; // delimit character(s)
435 unsigned char rwd:1; // read width
436 } flags;
437 };
438}; // _Istream_str_base
439
440struct _Istream_Cwidth {
441 char * s;
442 inline _Istream_str_base;
443}; // _Istream_Cwidth
444
445// Restrict nesting of input manipulators to those combinations that make sense.
446
447struct _Istream_Cquote {
448 _Istream_Cwidth cstr;
449}; // _Istream_Cquote
450
451struct _Istream_Cstr {
452 _Istream_Cwidth cstr;
453}; // _Istream_Cstr
454
455static inline {
456 // 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);
457 _Istream_Cwidth wdi( unsigned int wd, char s[] ) {
458 if ( wd <= 1 ) throwResume ExceptionInst( cstring_length ); // minimum 1 character and null terminator
459 return (_Istream_Cwidth)@{ .s = s, { {.scanset = 0p}, .wd = wd, {.all = 0} } };
460 }
461 _Istream_Cwidth wdi( unsigned int wd, unsigned int rwd, char s[] ) {
462 if ( wd <= 1 || wd <= rwd ) throwResume ExceptionInst( cstring_length ); // minimum 1 character, null terminator, plus subset
463 return (_Istream_Cwidth)@{ .s = s, { {.scanset = 0p}, .wd = rwd, {.flags.rwd = true} } };
464 }
465 _Istream_Cstr & getline( _Istream_Cwidth & f, const char delimiter = '\n' ) {
466 f.delimiters[0] = delimiter; f.delimiters[1] = '\0'; f.flags.delimiter = true; return (_Istream_Cstr &)f;
467 }
468 _Istream_Cquote quote( char & ch, const char Ldelimiter = '\'', const char Rdelimiter = '\0' ) {
469 return (_Istream_Cquote)@{ { .s = &ch, { {.delimiters = { Ldelimiter, Rdelimiter, '\1' }}, .wd = 1, {.flags.rwd = true} } } };
470 }
471 _Istream_Cquote & quote( _Istream_Cwidth & f, const char Ldelimiter = '"', const char Rdelimiter = '\0' ) {
472 f.delimiters[0] = Ldelimiter; f.delimiters[1] = Rdelimiter; f.delimiters[2] = '\0';
473 return (_Istream_Cquote &)f;
474 }
475 _Istream_Cstr & incl( const char scanset[], _Istream_Cwidth & f ) { f.scanset = scanset; f.flags.inex = false; return (_Istream_Cstr &)f; }
476 _Istream_Cstr & excl( const char scanset[], _Istream_Cwidth & f ) { f.scanset = scanset; f.flags.inex = true; return (_Istream_Cstr &)f; }
477 _Istream_Cstr ignore( const char s[] ) { return (_Istream_Cstr)@{ { .s = (char *)s, { {.scanset = 0p}, .wd = -1, {.flags.ignore = true} } } }; }
478 _Istream_Cstr & ignore( _Istream_Cwidth & f ) { f.flags.ignore = true; return (_Istream_Cstr &)f; }
479 _Istream_Cquote & ignore( _Istream_Cquote & f ) { f.cstr.flags.ignore = true; return (_Istream_Cquote &)f; }
480 _Istream_Cstr & ignore( _Istream_Cstr & f ) { f.cstr.flags.ignore = true; return (_Istream_Cstr &)f; }
481} // distribution
482
483forall( istype & | basic_istream( istype ) ) {
484 istype & ?|?( istype & is, _Istream_Cskip f );
485 istype & ?|?( istype & is, _Istream_Cquote f );
486 istype & ?|?( istype & is, _Istream_Cstr f );
487 static inline istype & ?|?( istype & is, _Istream_Cwidth f ) { return is | *(_Istream_Cstr *)&f; }
488} // distribution
489
490// FIXME: `| sized(T)` seems to be working around a bug, but it is logically unnecessary.
491// Including sized(T) causes a warning that is telling us to get rid of it.
492#pragma GCC diagnostic push
493#pragma GCC diagnostic ignored "-Wunused-parameter"
494forall( T & | sized(T) )
495struct _Istream_Manip {
496 T & val; // polymorphic base-type
497 int wd; // width
498 bool ignore; // do not change input argument
499}; // _Istream_Manip
500#pragma GCC diagnostic pop
501
502#define INPUT_FMT_DECL( T ) \
503static inline { \
504 _Istream_Manip(T) wdi( unsigned int wd, T & val ) { return (_Istream_Manip(T))@{ .val = val, .wd = wd, .ignore = false }; } \
505 _Istream_Manip(T) ignore( const T & val ) { return (_Istream_Manip(T))@{ .val = (T &)val, .wd = -1, .ignore = true }; } \
506 _Istream_Manip(T) & ignore( _Istream_Manip(T) & fmt ) { fmt.ignore = true; return fmt; } \
507} /* distribution */ \
508forall( istype & | basic_istream( istype ) ) { \
509 istype & ?|?( istype & is, _Istream_Manip(T) f ); \
510} // ?|?
511
512INPUT_FMT_DECL( char )
513INPUT_FMT_DECL( signed char )
514INPUT_FMT_DECL( unsigned char )
515INPUT_FMT_DECL( signed short int )
516INPUT_FMT_DECL( unsigned short int )
517INPUT_FMT_DECL( signed int )
518INPUT_FMT_DECL( unsigned int )
519INPUT_FMT_DECL( signed long int )
520INPUT_FMT_DECL( unsigned long int )
521INPUT_FMT_DECL( signed long long int )
522INPUT_FMT_DECL( unsigned long long int )
523
524INPUT_FMT_DECL( float )
525INPUT_FMT_DECL( double )
526INPUT_FMT_DECL( long double )
527
528INPUT_FMT_DECL( float _Complex )
529INPUT_FMT_DECL( double _Complex )
530INPUT_FMT_DECL( long double _Complex )
531
532// *********************************** enumerations ***********************************
533
534forall( istype & | istream( istype ), E | CfaEnum( E ) | Serial(E) )
535istype & ?|?( istype &, E & );
536
537forall( ostype & | ostream( ostype ), E | CfaEnum( E ) ) {
538 ostype & ?|?( ostype &, E );
539 OSTYPE_VOID( E );
540}
541
542// *********************************** time ***********************************
543
544#include <time_t.hfa> // Duration (constructors) / Time (constructors)
545
546forall( ostype & | ostream( ostype ) ) {
547 ostype & ?|?( ostype & os, Duration dur );
548 OSTYPE_VOID( Duration );
549 ostype & ?|?( ostype & os, Time time );
550 OSTYPE_VOID( Time );
551} // distribution
552
553// Local Variables: //
554// tab-width: 4 //
555// End: //
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