handlebars.components.scope

1 module handlebars.components.scope_;
2 
3 import handlebars.components.base;
4 
5 import std.string;
6 
7 /// Component that will handle the if blocks
8 class ScopeComponentCt(Token[] tokens, Properties properties) : HbsComponent!"" {
9 
10   ///
11   this(string propertyName, string localName, string index, string indexName) {
12   }
13 
14   string render(T, Components...)(T controller) {
15     return "";
16   }
17 }
18 
19 /// Component that will handle the if blocks
20 class ScopeComponent : HbsComponent!"" {
21 
22   ///
23   enum ComponentName = "scope";
24 
25   private {
26     string propertyName;
27     string localName;
28     string index;
29     string indexName;
30   }
31 
32   ///
33   this(string propertyName, string localName, string index, string indexName) {
34     this.propertyName = propertyName;
35     this.localName = localName;
36     this.index = index;
37     this.indexName = indexName;
38   }
39 
40   ///
41   string render(Component, Components...)() {
42     Token[] localContent;
43 
44     foreach(item; this.content) {
45       Token token = copy(item);
46 
47       if(token.value == localName) {
48         token.value = propertyName ~ "[" ~ index ~ "]";
49       }
50 
51       if(token.value.indexOf(localName ~ ".") == 0) {
52         auto pieces = token.value.split(".");
53         token.value = propertyName ~ "[" ~ index ~ "]." ~ pieces[1..$].join(".");
54       }
55 
56       if(token.value == indexName) {
57         token.value = index;
58         token.type = Token.Type.plain;
59       }
60 
61       foreach(ref property; token.properties.list) {
62         if(property.isEvaluated) {
63           continue;
64         }
65 
66         if(property.value == localName) {
67           property.value = propertyName ~ "[" ~ index ~ "]";
68         }
69 
70         if(property.value == indexName) {
71           property.value = index;
72           property.isEvaluated = true;
73         }
74       }
75 
76       foreach(ref property; token.properties.hash) {
77         if(property.isEvaluated) {
78           continue;
79         }
80 
81         if(property.value == localName) {
82           property.value = propertyName ~ "[" ~ index ~ "]";
83         }
84 
85         if(property.value == indexName) {
86           property.value = index;
87           property.isEvaluated = true;
88         }
89       }
90 
91       localContent ~= token;
92     }
93 
94     return lifecycle.yield(localContent);
95   }
96 }
97 
98 ///
99 Token copy(Token item) {
100   Token token;
101 
102   token.value = item.value;
103   token.type = item.type;
104 
105   token.properties.localName = item.properties.localName;
106   token.properties.indexName = item.properties.indexName;
107   token.properties.name = item.properties.name;
108 
109   foreach(property; item.properties.list) {
110     token.properties.list ~= Properties.Property(property.value, property.isEvaluated);
111   }
112 
113   foreach(key, property; item.properties.hash) {
114     token.properties.hash[key] = Properties.Property(property.value, property.isEvaluated);
115   }
116 
117   return token;
118 }