Mercurial > pub > ImplabJs
comparison src/implab/text/template-compile.js @ 21:7c22fc01fcec
rewritten ./text/template-compile
author | cin |
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date | Thu, 30 Nov 2017 11:01:22 +0300 |
parents | 23be39fd3851 |
children | f750c89976d3 |
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20:9718e8de0cb2 | 21:7c22fc01fcec |
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1 define( | 1 define( |
2 [ "dojo/request", "./format" ], | 2 ["dojo/request", "./format"], |
3 function(request, format) { | 3 function (request, format) { |
4 var compile = function(str) { | |
5 var code = "var p=[],print=function(){p.push(format.apply(null,arguments));};" + | |
6 // Introduce the data as local variables using with(){} | |
7 "with(obj){p.push('" + | |
8 // Convert the template into pure JavaScript | |
9 str.replace(/[\r\t\n]/g, " ").split("<%").join("\t").replace( | |
10 /(^|%>)[^\t]*/g, | |
11 function(x) { | |
12 return x.replace(/('|\\)/g, "\\$1"); | |
13 }).replace(/\t=(.*?)%>/g, "',$1,'").split("\t").join("');") | |
14 .split("%>").join("p.push('") + "');}return p.join('');"; | |
15 /* jshint -W054 */ | |
16 try { | |
17 var compiled = new Function("obj, format, nls", code); | |
18 | 4 |
19 /** | 5 // разбивает строку шаблона на токены, возвращает контекст для |
20 * Функция форматирования по шаблону | 6 // дальнейшей обработки в visitTemplate |
21 * | 7 var parseTemplate = function (str) { |
22 * @type{Function} | 8 var tokens = str.split(/(<%=|<%|%>)/); |
23 * @param{Object} obj объект с параметрами для подстановки | 9 var pos = -1; |
24 */ | 10 var data = [], |
25 return function(obj) { | 11 code = []; |
26 return compiled(obj || {}, format); | 12 |
27 }; | 13 return { |
28 } catch (e) { | 14 next: function () { |
29 if (console && console.error) { | 15 pos++; |
30 console.error(code); | 16 return pos < tokens.length; |
17 }, | |
18 token: function () { | |
19 return tokens[pos]; | |
20 }, | |
21 pushData: function () { | |
22 var i = data.length; | |
23 data.push.apply(data, arguments); | |
24 return i; | |
25 }, | |
26 pushCode : function() { | |
27 var i = code.length; | |
28 code.push.apply(code, arguments); | |
29 return i; | |
30 }, | |
31 compile: function () { | |
32 var text = "var $p = [];\n" + | |
33 "var print = function(){\n" + | |
34 " $p.push(format.apply(null,arguments));\n" + | |
35 "};\n" + | |
36 // Introduce the data as local variables using with(){} | |
37 "with(obj){\n" + | |
38 code.join("\n") + | |
39 "}\n" + | |
40 "return $p.join('');"; | |
41 | |
42 try { | |
43 var compiled = new Function("obj, format, $data", text); | |
44 /** | |
45 * Функция форматирования по шаблону | |
46 * | |
47 * @type{Function} | |
48 * @param{Object} obj объект с параметрами для подстановки | |
49 */ | |
50 return function (obj) { | |
51 return compiled(obj || {}, format, data); | |
52 }; | |
53 } catch (e) { | |
54 if (console && console.error) { | |
55 console.error(text); | |
56 console.log(data); | |
57 } | |
58 } | |
31 } | 59 } |
32 } | 60 } |
33 }; | 61 }; |
34 | 62 |
63 function visitTemplate(context) { | |
64 while (context.next()) { | |
65 switch (context.token()) { | |
66 case "<%": | |
67 visitCode(context); | |
68 break; | |
69 case "<%=": | |
70 visitInline(context); | |
71 break; | |
72 default: | |
73 visitTextFragment(context); | |
74 break; | |
75 } | |
76 } | |
77 } | |
78 | |
79 function visitInline(context) { | |
80 var code = ["$p.push("]; | |
81 while (context.next()) { | |
82 if (context.token() == "%>") | |
83 break; | |
84 code.push(context.token()); | |
85 } | |
86 code.push(");"); | |
87 context.pushCode(code.join('')); | |
88 } | |
89 | |
90 function visitCode(context) { | |
91 var code = []; | |
92 while (context.next()) { | |
93 if (context.token() == "%>") | |
94 break; | |
95 code.push(context.token()); | |
96 } | |
97 context.pushCode(code.join('')); | |
98 } | |
99 | |
100 function visitTextFragment(context) { | |
101 var i = context.pushData(context.token()); | |
102 context.pushCode("$p.push($data["+i+"]);"); | |
103 } | |
104 | |
105 var compile = function (str) { | |
106 if (!str) | |
107 return function() { return "";}; | |
108 | |
109 var ctx = parseTemplate(str); | |
110 visitTemplate(ctx); | |
111 return ctx.compile(); | |
112 }; | |
113 | |
35 var cache = {}; | 114 var cache = {}; |
36 | 115 |
37 compile.load = function(id, require, callback) { | 116 compile.load = function (id, require, callback) { |
38 var url = require.toUrl(id); | 117 var url = require.toUrl(id); |
39 if (url in cache) { | 118 if (url in cache) { |
40 callback(cache[url]); | 119 callback(cache[url]); |
41 } else { | 120 } else { |
42 request(url).then(compile).then(function(tc) { | 121 request(url).then(compile).then(function (tc) { |
43 callback(cache[url] = tc); | 122 callback(cache[url] = tc); |
44 }, function(err) { | 123 }, function (err) { |
45 require.signal("error", [ { | 124 require.signal("error", [{ |
46 error : err, | 125 error: err, |
47 src : 'implab/text/template-compile' | 126 src: 'implab/text/template-compile' |
48 } ]); | 127 }]); |
49 }); | 128 }); |
50 } | 129 } |
51 }; | 130 }; |
52 | 131 |
53 return compile; | 132 return compile; |