stripComments

1 // couples of input and expected result
2 immutable text = [[
3     "some text\n"
4     "more text",
5 
6     "some text\n"
7     "more text"
8 ],
9 [
10     "// start with comments\n"
11     "some text // other comment\n"
12     "more text",
13 
14     "\n"
15     "some text \n"
16     "more text"
17 ],
18 [
19     "/ almost a comment but text\n"
20     "some text // an actual comment\n"
21     "more text",
22 
23     "/ almost a comment but text\n"
24     "some text \n"
25     "more text"
26 ],
27 [
28     "some text // comment\n"
29     "more text",
30 
31     "some text \n"
32     "more text"
33 ],
34 [
35     "some text # comment\n"
36     "more text",
37 
38     "some text \n"
39     "more text"
40 ],
41 [
42     "some text /* inlined comment */ more text",
43 
44     "some text  more text"
45 ],
46 [
47     "some text /* comment with // inlined\n"
48     "over 2 lines */ more text",
49 
50     "some text  more text"
51 ],
52 [
53     "some text // comment with /* inlined\n"
54     "more text",
55 
56     "some text \n"
57     "more text"
58 ],
59 [
60     "some text # comment with */ inlined\n"
61     "more text",
62 
63     "some text \n"
64     "more text"
65 ],
66 [
67     "some text /* multiline comment\n"
68     "still in comment\n"
69     "again comment */ more text",
70 
71     "some text  more text"
72 ]];
73 
74 foreach (t; text) {
75     import std.algorithm : equal;
76     import std.format : format;
77     import std.conv : to;
78 
79     string input = t[0];
80     string result = t[0].stripComments().to!string;
81     string expected = t[1];
82 
83     assert(equal(expected, result), format(
84         "stripComments test failed.\ninput:\n%s\nresult:\n%s\nexpected:\n%s\n",
85         input, result, expected
86     ));
87 }
88 
89 foreach (t; text) {
90     import std.algorithm : equal;
91     import std.string : lineSplitter;
92     import std.format : format;
93 
94     string [] input;
95     string [] result;
96     string [] expected;
97     foreach (s; t[0].lineSplitter) input ~= s;
98     foreach (s; t[0].lineSplitter.stripComments) result ~= s;
99     foreach (s; t[1].lineSplitter) expected ~= s;
100 
101     assert(equal(expected, result), format(
102         "lineSplitter.stripComments test failed.\ninput:\n%s\nresult:\n%s\nexpected:\n%s\n",
103         input, result, expected
104     ));
105 }