Last change
on this file since e29cc2e was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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Property mode
set to
100644
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File size:
1.5 KB
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1 | var TYPE = require('../../tokenizer').TYPE;
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2 |
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3 | var IDENT = TYPE.Ident;
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4 | var PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
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5 | var SOLIDUS = 0x002F; // U+002F SOLIDUS (/)
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6 | var GREATERTHANSIGN = 0x003E; // U+003E GREATER-THAN SIGN (>)
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7 | var TILDE = 0x007E; // U+007E TILDE (~)
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8 |
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9 | // + | > | ~ | /deep/
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10 | module.exports = {
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11 | name: 'Combinator',
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12 | structure: {
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13 | name: String
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14 | },
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15 | parse: function() {
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16 | var start = this.scanner.tokenStart;
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17 | var code = this.scanner.source.charCodeAt(this.scanner.tokenStart);
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18 |
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19 | switch (code) {
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20 | case GREATERTHANSIGN:
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21 | case PLUSSIGN:
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22 | case TILDE:
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23 | this.scanner.next();
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24 | break;
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25 |
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26 | case SOLIDUS:
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27 | this.scanner.next();
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28 |
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29 | if (this.scanner.tokenType !== IDENT || this.scanner.lookupValue(0, 'deep') === false) {
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30 | this.error('Identifier `deep` is expected');
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31 | }
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32 |
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33 | this.scanner.next();
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34 |
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35 | if (!this.scanner.isDelim(SOLIDUS)) {
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36 | this.error('Solidus is expected');
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37 | }
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38 |
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39 | this.scanner.next();
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40 | break;
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41 |
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42 | default:
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43 | this.error('Combinator is expected');
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44 | }
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45 |
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46 | return {
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47 | type: 'Combinator',
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48 | loc: this.getLocation(start, this.scanner.tokenStart),
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49 | name: this.scanner.substrToCursor(start)
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50 | };
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51 | },
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52 | generate: function(node) {
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53 | this.chunk(node.name);
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54 | }
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55 | };
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