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string-istream-manip.cfa @ 75e2286

Last change on this file since 75e2286 was 75e2286, checked in by Peter A. Buhr <pabuhr@…>, 5 months ago
add tests for getline and quoted input manipulators
Property mode set to `100644`
File size: 7.0 KB

Line
1
2	#include <fstream.hfa>
3	#include <collections/string.hfa>
4	#include <collections/string_res.hfa>
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.
12	static _Istream_Sstr plainjane( string & s ) { return (_Istream_Sstr)@{ s, {{0p}, -1, {.flags.rwd : false}} }; }
13	static _Istream_Rstr plainjane( string_res & s ) { return (_Istream_Rstr)@{ &s, {{0p}, -1, {.flags.rwd : false}} }; }
14
15	static void forceStringHeapFreeSpaceTo(int desiredSize) {
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";
22	}
23
24	int main() {
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;
157
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;
167
168	s = "q";
169	sin \| incl( "abc", s ); sout \| "14" \| s;
170	s = "q";
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;
184	}
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;
194
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;
203	sin \| "\n";
204
205	s = "q";
206	sin \| incl( "abc", s ); sout \| "14" \| s;
207	s = "q";
208	sin \| excl( "u", s ); sout \| "15" \| s;
209	sin \| skip( "u" );
210	sin \| "\n";
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	}
221	}

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