tern.regex source code

1 module tern.regex;
2 
3 import tern.regex.builder;
4 import tern.regex.matcher;
5 
6 package static string[string] lookups;
7 static this()
8 {
9     lookups["\\w"] = expand("a-zA-Z0-9_", lookups);
10     lookups["\\d"] = expand("0-9", lookups);
11     lookups["\\s"] = expand("  t\r\n\f", lookups);
12     lookups["\\h"] = expand("  t", lookups);
13     lookups["\\t"] = expand("\t", lookups);
14     lookups["\\r"] = expand("\r", lookups);
15     lookups["\\n"] = expand("\n", lookups);
16     lookups["\\f"] = expand("\f", lookups);
17     lookups["\\v"] = expand("\v", lookups);
18     lookups["\\b"] = expand("\b", lookups);
19     lookups["\\a"] = expand("\a", lookups);
20     lookups["\\0"] = expand("\0", lookups);
21 }
22 
23 public template regex(string PATTERN, ubyte FLAGS = GLOBAL)
24 {
25 public:
26 final:
27     Regex ctor()
28     {
29         return new Regex(PATTERN, FLAGS);
30     }
31 
32     pure string[] matchFirst(string TEXT)()
33     {
34         string[string] lookups;
35         lookups["\\w"] = expand("a-zA-Z0-9_", lookups);
36         lookups["\\d"] = expand("0-9", lookups);
37         lookups["\\s"] = expand("  t\r\n\f", lookups);
38         lookups["\\h"] = expand("  t", lookups);
39         lookups["\\t"] = expand("\t", lookups);
40         lookups["\\r"] = expand("\r", lookups);
41         lookups["\\n"] = expand("\n", lookups);
42         lookups["\\f"] = expand("\f", lookups);
43         lookups["\\v"] = expand("\v", lookups);
44         lookups["\\b"] = expand("\b", lookups);
45         lookups["\\a"] = expand("\a", lookups);
46         lookups["\\0"] = expand("\0", lookups);
47 
48         auto ret = matchInternal(PATTERN.build(lookups), FLAGS, TEXT, 1);
49         return ret.length != 0 ? ret[0] : null;
50     }
51 
52     pure string[][] match(string TEXT)()
53     {
54         string[string] lookups;
55         lookups["\\w"] = expand("a-zA-Z0-9_", lookups);
56         lookups["\\d"] = expand("0-9", lookups);
57         lookups["\\s"] = expand("  t\r\n\f", lookups);
58         lookups["\\h"] = expand("  t", lookups);
59         lookups["\\t"] = expand("\t", lookups);
60         lookups["\\r"] = expand("\r", lookups);
61         lookups["\\n"] = expand("\n", lookups);
62         lookups["\\f"] = expand("\f", lookups);
63         lookups["\\v"] = expand("\v", lookups);
64         lookups["\\b"] = expand("\b", lookups);
65         lookups["\\a"] = expand("\a", lookups);
66         lookups["\\0"] = expand("\0", lookups);
67 
68         return matchInternal(PATTERN.build(lookups), FLAGS, TEXT);
69     }
70 }
71 
72 public class Regex
73 {
74 private:
75 final:
76     Element[] elements;
77     ubyte flags;
78 
79 public:
80     
81     this(string pattern, ubyte flags = GLOBAL)
82     {
83         this.elements = pattern.build(lookups);
84         this.flags = flags;
85     }
86 
87     string[] matchFirst(string text)
88     {
89         auto ret = matchInternal(elements, flags, text, 1);
90         return ret.length != 0 ? ret[0] : null;
91     }
92 
93     string[][] match(string text)
94     {
95         return matchInternal(elements, flags, text);
96     }
97 }