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318
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1
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319
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2 %tokens ':' ';' '(' ')' ',' template id number '%%' '%terminal'
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318
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3
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4 %%
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5
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319
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6 burgdef: directives '%%' rules;
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7
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8 directives:
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9 | directives directive;
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318
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10
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319
|
11 directive: termdef;
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12
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13 termdef: '%terminal' termids;
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14
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15 termids:
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16 | termids termid;
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318
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17
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319
|
18 termid: id { self.system.add_terminal($1.val) };
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19
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20 rules:
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21 | rules rule;
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22
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23 rule: id ':' tree cost template { self.system.add_rule($1.val, $3, $4, $5.val) };
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318
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24
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319
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25 cost: number { return $1.val };
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318
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26
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319
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27 tree: id { return self.system.tree($1.val) }
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28 | id '(' tree ')' { return self.system.tree($1.val, $3) }
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29 | id '(' tree ',' tree ')' { return self.system.tree($1.val, $3, $5) };
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30
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