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author Coffee CMS <info@coffee-cms.ru>
date Fri, 11 Oct 2024 22:40:23 +0000
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1 <!doctype html>
2
3 <title>CodeMirror: D mode</title>
4 <meta charset="utf-8"/>
5 <link rel=stylesheet href="../../doc/docs.css">
6
7 <link rel="stylesheet" href="../../lib/codemirror.css">
8 <script src="../../lib/codemirror.js"></script>
9 <script src="../../addon/edit/matchbrackets.js"></script>
10 <script src="d.js"></script>
11 <style>.CodeMirror {border: 2px inset #dee;}</style>
12 <div id=nav>
13 <a href="https://codemirror.net/5"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png" alt=""></a>
14
15 <ul>
16 <li><a href="../../index.html">Home</a>
17 <li><a href="../../doc/manual.html">Manual</a>
18 <li><a href="https://github.com/codemirror/codemirror5">Code</a>
19 </ul>
20 <ul>
21 <li><a href="../index.html">Language modes</a>
22 <li><a class=active href="#">D</a>
23 </ul>
24 </div>
25
26 <article>
27 <h2>D mode</h2>
28 <form><textarea id="code" name="code">
29 /* D demo code // copied from phobos/sd/metastrings.d */
30 // Written in the D programming language.
31
32 /**
33 Templates with which to do compile-time manipulation of strings.
34
35 Macros:
36 WIKI = Phobos/StdMetastrings
37
38 Copyright: Copyright Digital Mars 2007 - 2009.
39 License: <a href="http://www.boost.org/LICENSE_1_0.txt">Boost License 1.0</a>.
40 Authors: $(WEB digitalmars.com, Walter Bright),
41 Don Clugston
42 Source: $(PHOBOSSRC std/_metastrings.d)
43 */
44 /*
45 Copyright Digital Mars 2007 - 2009.
46 Distributed under the Boost Software License, Version 1.0.
47 (See accompanying file LICENSE_1_0.txt or copy at
48 http://www.boost.org/LICENSE_1_0.txt)
49 */
50 module std.metastrings;
51
52 /**
53 Formats constants into a string at compile time. Analogous to $(XREF
54 string,format).
55
56 Parameters:
57
58 A = tuple of constants, which can be strings, characters, or integral
59 values.
60
61 Formats:
62 * The formats supported are %s for strings, and %%
63 * for the % character.
64 Example:
65 ---
66 import std.metastrings;
67 import std.stdio;
68
69 void main()
70 {
71 string s = Format!("Arg %s = %s", "foo", 27);
72 writefln(s); // "Arg foo = 27"
73 }
74 * ---
75 */
76
77 template Format(A...)
78 {
79 static if (A.length == 0)
80 enum Format = "";
81 else static if (is(typeof(A[0]) : const(char)[]))
82 enum Format = FormatString!(A[0], A[1..$]);
83 else
84 enum Format = toStringNow!(A[0]) ~ Format!(A[1..$]);
85 }
86
87 template FormatString(const(char)[] F, A...)
88 {
89 static if (F.length == 0)
90 enum FormatString = Format!(A);
91 else static if (F.length == 1)
92 enum FormatString = F[0] ~ Format!(A);
93 else static if (F[0..2] == "%s")
94 enum FormatString
95 = toStringNow!(A[0]) ~ FormatString!(F[2..$],A[1..$]);
96 else static if (F[0..2] == "%%")
97 enum FormatString = "%" ~ FormatString!(F[2..$],A);
98 else
99 {
100 static assert(F[0] != '%', "unrecognized format %" ~ F[1]);
101 enum FormatString = F[0] ~ FormatString!(F[1..$],A);
102 }
103 }
104
105 unittest
106 {
107 auto s = Format!("hel%slo", "world", -138, 'c', true);
108 assert(s == "helworldlo-138ctrue", "[" ~ s ~ "]");
109 }
110
111 /**
112 * Convert constant argument to a string.
113 */
114
115 template toStringNow(ulong v)
116 {
117 static if (v < 10)
118 enum toStringNow = "" ~ cast(char)(v + '0');
119 else
120 enum toStringNow = toStringNow!(v / 10) ~ toStringNow!(v % 10);
121 }
122
123 unittest
124 {
125 static assert(toStringNow!(1uL << 62) == "4611686018427387904");
126 }
127
128 /// ditto
129 template toStringNow(long v)
130 {
131 static if (v < 0)
132 enum toStringNow = "-" ~ toStringNow!(cast(ulong) -v);
133 else
134 enum toStringNow = toStringNow!(cast(ulong) v);
135 }
136
137 unittest
138 {
139 static assert(toStringNow!(0x100000000) == "4294967296");
140 static assert(toStringNow!(-138L) == "-138");
141 }
142
143 /// ditto
144 template toStringNow(uint U)
145 {
146 enum toStringNow = toStringNow!(cast(ulong)U);
147 }
148
149 /// ditto
150 template toStringNow(int I)
151 {
152 enum toStringNow = toStringNow!(cast(long)I);
153 }
154
155 /// ditto
156 template toStringNow(bool B)
157 {
158 enum toStringNow = B ? "true" : "false";
159 }
160
161 /// ditto
162 template toStringNow(string S)
163 {
164 enum toStringNow = S;
165 }
166
167 /// ditto
168 template toStringNow(char C)
169 {
170 enum toStringNow = "" ~ C;
171 }
172
173
174 /********
175 * Parse unsigned integer literal from the start of string s.
176 * returns:
177 * .value = the integer literal as a string,
178 * .rest = the string following the integer literal
179 * Otherwise:
180 * .value = null,
181 * .rest = s
182 */
183
184 template parseUinteger(const(char)[] s)
185 {
186 static if (s.length == 0)
187 {
188 enum value = "";
189 enum rest = "";
190 }
191 else static if (s[0] >= '0' && s[0] <= '9')
192 {
193 enum value = s[0] ~ parseUinteger!(s[1..$]).value;
194 enum rest = parseUinteger!(s[1..$]).rest;
195 }
196 else
197 {
198 enum value = "";
199 enum rest = s;
200 }
201 }
202
203 /********
204 Parse integer literal optionally preceded by $(D '-') from the start
205 of string $(D s).
206
207 Returns:
208 .value = the integer literal as a string,
209 .rest = the string following the integer literal
210
211 Otherwise:
212 .value = null,
213 .rest = s
214 */
215
216 template parseInteger(const(char)[] s)
217 {
218 static if (s.length == 0)
219 {
220 enum value = "";
221 enum rest = "";
222 }
223 else static if (s[0] >= '0' && s[0] <= '9')
224 {
225 enum value = s[0] ~ parseUinteger!(s[1..$]).value;
226 enum rest = parseUinteger!(s[1..$]).rest;
227 }
228 else static if (s.length >= 2 &&
229 s[0] == '-' && s[1] >= '0' && s[1] <= '9')
230 {
231 enum value = s[0..2] ~ parseUinteger!(s[2..$]).value;
232 enum rest = parseUinteger!(s[2..$]).rest;
233 }
234 else
235 {
236 enum value = "";
237 enum rest = s;
238 }
239 }
240
241 unittest
242 {
243 assert(parseUinteger!("1234abc").value == "1234");
244 assert(parseUinteger!("1234abc").rest == "abc");
245 assert(parseInteger!("-1234abc").value == "-1234");
246 assert(parseInteger!("-1234abc").rest == "abc");
247 }
248
249 /**
250 Deprecated aliases held for backward compatibility.
251 */
252 deprecated alias toStringNow ToString;
253 /// Ditto
254 deprecated alias parseUinteger ParseUinteger;
255 /// Ditto
256 deprecated alias parseUinteger ParseInteger;
257
258 </textarea></form>
259
260 <script>
261 var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
262 lineNumbers: true,
263 matchBrackets: true,
264 indentUnit: 4,
265 mode: "text/x-d"
266 });
267 </script>
268
269 <p>Simple mode that handle D-Syntax (<a href="http://www.dlang.org">DLang Homepage</a>).</p>
270
271 <p><strong>MIME types defined:</strong> <code>text/x-d</code>
272 .</p>
273 </article>