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1 file changed, 48 insertions
grammar.js(Datei erstellt)
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| 1 | + | /** | |
| 2 | + | * @file Nova grammar | |
| 3 | + | * @author nouveau | |
| 4 | + | */ | |
| 5 | + | ||
| 6 | + | module.exports = grammar({ | |
| 7 | + | name: "nova", | |
| 8 | + | ||
| 9 | + | rules: { | |
| 10 | + | program: $ => repeat($.rule), | |
| 11 | + | ||
| 12 | + | rule: $ => seq( | |
| 13 | + | '|', | |
| 14 | + | repeat($.rule_lhs), | |
| 15 | + | '|', | |
| 16 | + | optional('\n'), | |
| 17 | + | repeat($.rule_rhs) | |
| 18 | + | ), | |
| 19 | + | ||
| 20 | + | rule_lhs: $ => seq( | |
| 21 | + | $.stack, | |
| 22 | + | optional($.anticonsumption_suffix), | |
| 23 | + | optional('\n') | |
| 24 | + | ), | |
| 25 | + | ||
| 26 | + | rule_rhs: $ => seq( | |
| 27 | + | $.stack, | |
| 28 | + | optional('\n') | |
| 29 | + | ), | |
| 30 | + | ||
| 31 | + | stack: $ => seq( | |
| 32 | + | $.stack_label, | |
| 33 | + | repeat(choice($.variable, $.term)), | |
| 34 | + | ), | |
| 35 | + | ||
| 36 | + | stack_label: $ => seq( | |
| 37 | + | ':', | |
| 38 | + | choice($.port, repeat($.label)), | |
| 39 | + | ':' | |
| 40 | + | ), | |
| 41 | + | ||
| 42 | + | variable: $ => seq('$', $.term), | |
| 43 | + | port: $ => seq('@', $.label), | |
| 44 | + | label: $ => /[^\n\r\t |:?@]+/, | |
| 45 | + | term: $ => /[^\n\r\t |:]+/, | |
| 46 | + | anticonsumption_suffix: $ => '?', | |
| 47 | + | } | |
| 48 | + | }); | |
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