XMLWriter.tagDepth

1 import std.array : appender;
2 
3 auto writer = xmlWriter(appender!string());
4 assert(writer.tagDepth == 0);
5 
6 writer.writeStartTag("root", Newline.no);
7 assert(writer.tagDepth == 1);
8 assert(writer.output.data == "<root>");
9 
10 writer.writeStartTag("a");
11 assert(writer.tagDepth == 2);
12 assert(writer.output.data ==
13        "<root>\n" ~
14        "    <a>");
15 
16 // The tag depth is increased as soon as a start tag is opened, so
17 // any calls to writeIndent or writeAttr while a start tag is open
18 // will use the same tag depth as the children of the start tag.
19 writer.openStartTag("b");
20 assert(writer.tagDepth == 3);
21 assert(writer.output.data ==
22        "<root>\n" ~
23        "    <a>\n" ~
24        "        <b");
25 
26 writer.closeStartTag();
27 assert(writer.tagDepth == 3);
28 assert(writer.output.data ==
29        "<root>\n" ~
30        "    <a>\n" ~
31        "        <b>");
32 
33 writer.writeEndTag("b");
34 assert(writer.tagDepth == 2);
35 assert(writer.output.data ==
36        "<root>\n" ~
37        "    <a>\n" ~
38        "        <b>\n" ~
39        "        </b>");
40 
41 // Only start tags and end tags affect the tag depth.
42 writer.writeComment("comment");
43 assert(writer.tagDepth == 2);
44 assert(writer.output.data ==
45        "<root>\n" ~
46        "    <a>\n" ~
47        "        <b>\n" ~
48        "        </b>\n" ~
49        "        <!--comment-->");
50 
51 writer.writeEndTag("a");
52 assert(writer.tagDepth == 1);
53 assert(writer.output.data ==
54        "<root>\n" ~
55        "    <a>\n" ~
56        "        <b>\n" ~
57        "        </b>\n" ~
58        "        <!--comment-->\n" ~
59        "    </a>");
60 
61 writer.writeEndTag("root");
62 assert(writer.tagDepth == 0);
63 assert(writer.output.data ==
64        "<root>\n" ~
65        "    <a>\n" ~
66        "        <b>\n" ~
67        "        </b>\n" ~
68        "        <!--comment-->\n" ~
69        "    </a>\n" ~
70        "</root>");