source: trip-planner-front/node_modules/css-tree/lib/syntax/node/Atrule.js

Last change on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 3.0 KB
Line 
1var TYPE = require('../../tokenizer').TYPE;
2var rawMode = require('./Raw').mode;
3
4var ATKEYWORD = TYPE.AtKeyword;
5var SEMICOLON = TYPE.Semicolon;
6var LEFTCURLYBRACKET = TYPE.LeftCurlyBracket;
7var RIGHTCURLYBRACKET = TYPE.RightCurlyBracket;
8
9function consumeRaw(startToken) {
10 return this.Raw(startToken, rawMode.leftCurlyBracketOrSemicolon, true);
11}
12
13function isDeclarationBlockAtrule() {
14 for (var offset = 1, type; type = this.scanner.lookupType(offset); offset++) {
15 if (type === RIGHTCURLYBRACKET) {
16 return true;
17 }
18
19 if (type === LEFTCURLYBRACKET ||
20 type === ATKEYWORD) {
21 return false;
22 }
23 }
24
25 return false;
26}
27
28module.exports = {
29 name: 'Atrule',
30 structure: {
31 name: String,
32 prelude: ['AtrulePrelude', 'Raw', null],
33 block: ['Block', null]
34 },
35 parse: function() {
36 var start = this.scanner.tokenStart;
37 var name;
38 var nameLowerCase;
39 var prelude = null;
40 var block = null;
41
42 this.eat(ATKEYWORD);
43
44 name = this.scanner.substrToCursor(start + 1);
45 nameLowerCase = name.toLowerCase();
46 this.scanner.skipSC();
47
48 // parse prelude
49 if (this.scanner.eof === false &&
50 this.scanner.tokenType !== LEFTCURLYBRACKET &&
51 this.scanner.tokenType !== SEMICOLON) {
52 if (this.parseAtrulePrelude) {
53 prelude = this.parseWithFallback(this.AtrulePrelude.bind(this, name), consumeRaw);
54
55 // turn empty AtrulePrelude into null
56 if (prelude.type === 'AtrulePrelude' && prelude.children.head === null) {
57 prelude = null;
58 }
59 } else {
60 prelude = consumeRaw.call(this, this.scanner.tokenIndex);
61 }
62
63 this.scanner.skipSC();
64 }
65
66 switch (this.scanner.tokenType) {
67 case SEMICOLON:
68 this.scanner.next();
69 break;
70
71 case LEFTCURLYBRACKET:
72 if (this.atrule.hasOwnProperty(nameLowerCase) &&
73 typeof this.atrule[nameLowerCase].block === 'function') {
74 block = this.atrule[nameLowerCase].block.call(this);
75 } else {
76 // TODO: should consume block content as Raw?
77 block = this.Block(isDeclarationBlockAtrule.call(this));
78 }
79
80 break;
81 }
82
83 return {
84 type: 'Atrule',
85 loc: this.getLocation(start, this.scanner.tokenStart),
86 name: name,
87 prelude: prelude,
88 block: block
89 };
90 },
91 generate: function(node) {
92 this.chunk('@');
93 this.chunk(node.name);
94
95 if (node.prelude !== null) {
96 this.chunk(' ');
97 this.node(node.prelude);
98 }
99
100 if (node.block) {
101 this.node(node.block);
102 } else {
103 this.chunk(';');
104 }
105 },
106 walkContext: 'atrule'
107};
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