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string-istream-manip.cfa @ 9c2ac95

Last change on this file since 9c2ac95 was 75e2286, checked in by Peter A. Buhr <pabuhr@…>, 9 months ago
add tests for getline and quoted input manipulators
Property mode set to `100644`
File size: 7.0 KB

Rev	Line
[f54e6ec]	1
	2	#include <fstream.hfa>
	3	#include <collections/string.hfa>
[ff56dd2e]	4	#include <collections/string_res.hfa>
[0860d9c]	5	#include <stdio.h>
	6
	7	// No-op manipulators.
	8	// Temporary hack while there are two code paths in the string implementation.
	9	// (One for reading plain strings, the other for reading via a manipulator.)
	10	// The test cases that use plainjane(-) are exercising the via-manipulator code path,
	11	// just with trivial manipulation.
[75e2286]	12	static _Istream_Sstr plainjane( string & s ) { return (_Istream_Sstr)@{ s, {{0p}, -1, {.flags.rwd : false}} }; }
[0860d9c]	13	static _Istream_Rstr plainjane( string_res & s ) { return (_Istream_Rstr)@{ &s, {{0p}, -1, {.flags.rwd : false}} }; }
	14
	15	static void forceStringHeapFreeSpaceTo(int desiredSize) {
[75e2286]	16	for (1_000_000) {
	17	string x = "a";
	18	(void)x;
	19	if (desiredSize == DEBUG_string_bytes_avail_until_gc(DEBUG_string_heap())) return;
	20	}
	21	sout \| "Unable to force size" \| desiredSize \| "in 1,000,000 tries";
[0860d9c]	22	}
[f54e6ec]	23
	24	int main() {
[75e2286]	25	// These "pre" cases deal with issues analogous to the "pre" cases of io/manipulatorsInput.
	26	// The acceptance criterion is simpler but driving the cases is harder.
	27	// The tests just read strings and echo what they read; acceptance of simple echoing assures
	28	// no spurious splitting merging.
	29	// The lengths of the strings are chosen to match white-box knowledge of when the string layer
	30	// has tor drive the cstring layer through a second iteration:
	31	// - for no-manip, lengths are near the room at end of string heap
	32	// (chosen target size of 9 showed the original bug on preS2, aligned with the other cases)
	33	// - for manip, lengths are near the auxiliary buffer size of 128
	34	// Only first case repeats for string_res; rest run only from the passthru string layer.
	35	// Similarly, the manipulator breadth isn't checked at the cstring layer either.
	36	{
	37	// S: string, no manipulator
	38	void echoTillX(const char * casename) {
	39	string s;
	40	// loop assumes behaviour not tested until main-case #15:
	41	// on reading nothing, the prior string value is left alone
	42	do {
	43	s = "";
	44	forceStringHeapFreeSpaceTo(9);
	45	sin \| s;
	46	sout \| casename \| s;
	47	} while ( size(s) > 0 && s[size(s)-1] != 'x' );
	48	}
	49	echoTillX("preS1");
	50	echoTillX("preS2");
	51	echoTillX("preS3");
	52	echoTillX("preS4");
	53	}
	54	{
	55	// SMN: string, manipulator for no-op
	56	void echoTillX(const char * casename) {
	57	string s;
	58	do {
	59	s = "";
	60	sin \| plainjane( s );
	61	sout \| casename \| s;
	62	} while ( size(s) > 0 && s[size(s)-1] != 'x' );
	63	}
	64	echoTillX("preSMN1");
	65	echoTillX("preSMN2");
	66	echoTillX("preSMN3");
	67	echoTillX("preSMN4");
	68	}
	69	{
	70	// RMN: string_res, manipulator for no-op
	71	void echoTillX(const char * casename) {
	72	string_res s;
	73	do {
	74	s = "";
	75	sin \| plainjane( s );
	76	sout \| casename \| s;
	77	} while ( size(s) > 0 && s[size(s)-1] != 'x' );
	78	}
	79	echoTillX("preRMN1");
	80	echoTillX("preRMN2");
	81	echoTillX("preRMN3");
	82	echoTillX("preRMN4");
	83	}
	84	{
	85	// SMI: string, manipulator `incl`
	86	void echoTillX(const char * casename) {
	87	string s;
	88	do {
	89	s = "";
	90	sin \| skip("-\n");
	91	sin \| incl( ".:\|# x", s );
	92	sout \| casename \| " \"" \| s \| "\"";
	93	} while ( size(s) > 0 && s[size(s)-1] != 'x' );
	94	}
	95	echoTillX("preSMI1");
	96	echoTillX("preSMI2");
	97	echoTillX("preSMI3");
	98	echoTillX("preSMI4");
	99	}
	100	{
	101	// SME: string, manipulator `excl`
	102	void echoTillX(const char * casename) {
	103	string s;
	104	do {
	105	s = "";
	106	sin \| skip("-\n");
	107	sin \| excl( "-\n", s );
	108	sout \| casename \| " \"" \| s \| "\"";
	109	} while ( size(s) > 0 && s[size(s)-1] != 'x' );
	110	}
	111	echoTillX("preSME1");
	112	echoTillX("preSME2");
	113	echoTillX("preSME3");
	114	echoTillX("preSME4");
	115	}
	116	sin \| skip("-\n");
	117	{
	118	// SMG: string, manipulator `getline`
	119	void echoTillX(const char * casename) {
	120	string s;
	121	do {
	122	s = "";
	123	sin \| getline( s );
	124	sout \| casename \| s;
	125	} while ( size(s) > 0 && s[size(s)-1] != 'x' );
	126	}
	127	echoTillX("preSMG1");
	128	echoTillX("preSMG2");
	129	echoTillX("preSMG3");
	130	echoTillX("preSMG4");
	131	}
	132	{
	133	// SMD: string, manipulator (`getline` with custom) delimiter
	134	void echoTillX(const char * casename) {
	135	string s;
	136	do {
	137	s = "";
	138	sin \| getline( s, '@' );
	139	sout \| casename \| s;
	140	} while ( size(s) > 0 && s[size(s)-1] != 'x' );
	141	sin \| skip(" \n");
	142	}
	143	echoTillX("preSMD1");
	144	echoTillX("preSMD2");
	145	echoTillX("preSMD3");
	146	echoTillX("preSMD4");
	147	}
	148	// Keep harmonized with io/manipulatorsInput.
	149	{
	150	string s = "yyyyyyyyyyyyyyyyyyyy";
	151	char sk[] = "abc";
	152	sin \| "abc " \| skip( sk ) \| skip( 5 ); sout \| "1" \| s;
	153	sin \| s; sout \| "2" \| s;
	154	sin \| ignore( s ); sout \| "3" \| s;
	155	sin \| wdi( 8, s ); sout \| "4" \| s;
	156	sin \| ignore( wdi( 8, s ) ); sout \| "5" \| s;
[f54e6ec]	157
[75e2286]	158	sin \| incl( "abc", s ); sout \| "6" \| s;
	159	sin \| excl( "abc", s ); sout \| "7" \| s;
	160	sin \| ignore( incl( "abc", s ) ); sout \| "8" \| s;
	161	sin \| ignore( excl( "abc", s ) ); sout \| "9" \| s;
	162	sin \| incl( "abc", wdi( 8, s ) ); sout \| "10" \| s;
	163	sin \| excl( "abc", wdi( 8, s ) ); sout \| "11" \| s;
	164	sin \| ignore( incl( "abc", wdi( 8, s ) ) ); sout \| "12" \| s;
	165	sin \| ignore( excl( "abc", wdi( 8, s ) ) ); sout \| "13" \| s;
	166	sin \| nl;
[8cffa4f]	167
	168	s = "q";
[75e2286]	169	sin \| incl( "abc", s ); sout \| "14" \| s;
[8cffa4f]	170	s = "q";
[75e2286]	171	sin \| excl( "u", s ); sout \| "15" \| s;
	172	sin \| skip( "u" ) \| nl;
	173
	174	sin \| getline( s ); sout \| "16" \| s;
	175	sin \| getline( s, '%' ) \| nl; sout \| "17" \| s;
	176	sin \| ignore( getline( s, '%' ) ) \| nl; sout \| "18" \| s;
	177
	178	sin \| quoted( s ); sout \| "19" \| s;
	179	sin \| quoted( s, '\'' ); sout \| "20" \| s;
	180	sin \| quoted( s, '{', '}' ); sout \| "21" \| s;
	181	sin \| quoted( s, 'X', 'Y' ); sout \| "22" \| s;
	182	sin \| ignore( quoted( s, 'X', 'Y' ) ); sout \| "23" \| s;
	183	sin \| nl;
[8cffa4f]	184	}
[75e2286]	185	// Full repeat on string_res layer assures the full manipulator vocabulary is supported there.
	186	{
	187	string_res s = "yyyyyyyyyyyyyyyyyyyy";
	188	char sk[] = "abc";
	189	sin \| "abc " \| skip( sk ) \| skip( 5 ); sout \| "1" \| s;
	190	sin \| s; sout \| "2" \| s;
	191	sin \| ignore( s ); sout \| "3" \| s;
	192	sin \| wdi( 8, s ); sout \| "4" \| s;
	193	sin \| ignore( wdi( 8, s ) ); sout \| "5" \| s;
[ff56dd2e]	194
[75e2286]	195	sin \| incl( "abc", s ); sout \| "6" \| s;
	196	sin \| excl( "abc", s ); sout \| "7" \| s;
	197	sin \| ignore( incl( "abc", s ) ); sout \| "8" \| s;
	198	sin \| ignore( excl( "abc", s ) ); sout \| "9" \| s;
	199	sin \| incl( "abc", wdi( 8, s ) ); sout \| "10" \| s;
	200	sin \| excl( "abc", wdi( 8, s ) ); sout \| "11" \| s;
	201	sin \| ignore( incl( "abc", wdi( 8, s ) ) ); sout \| "12" \| s;
	202	sin \| ignore( excl( "abc", wdi( 8, s ) ) ); sout \| "13" \| s;
[8a33777]	203	sin \| "\n";
[8cffa4f]	204
	205	s = "q";
[75e2286]	206	sin \| incl( "abc", s ); sout \| "14" \| s;
[8cffa4f]	207	s = "q";
[75e2286]	208	sin \| excl( "u", s ); sout \| "15" \| s;
[8cffa4f]	209	sin \| skip( "u" );
	210	sin \| "\n";
[75e2286]	211	sin \| getline( s ); sout \| "16" \| s;
	212	sin \| getline( s, '%' ) \| nl; sout \| "17" \| s;
	213	sin \| ignore( getline( s, '%' ) ) \| nl; sout \| "18" \| s;
	214
	215	sin \| quoted( s ); sout \| "19" \| s;
	216	sin \| quoted( s, '\'' ); sout \| "20" \| s;
	217	sin \| quoted( s, '{', '}' ); sout \| "21" \| s;
	218	sin \| quoted( s, 'X', 'Y' ); sout \| "22" \| s;
	219	sin \| ignore( quoted( s, 'X', 'Y' ) ); sout \| "23" \| s;
	220	}
[f54e6ec]	221	}

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