| 1 | // Refactoring of LL(1) Grammar for Xapian
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| 2 |
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| 3 | // Symbols:
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| 4 | // 0 $ 10 HATE_AFTER_AND 20 BRA 30 stop_prob
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| 5 | // 1 ERROR 11 SYNONYM 21 KET 31 stop_term
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| 6 | // 2 OR 12 TERM 22 EMPTY_GROUP_OK 32 compound_term
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| 7 | // 3 XOR 13 GROUP_TERM 23 error 33 phrase
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| 8 | // 4 AND 14 PHR_TERM 24 query 34 phrased_term
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| 9 | // 5 NOT 15 WILD_TERM 25 expr 35 group
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| 10 | // 6 NEAR 16 PARTIAL_TERM 26 prob_expr 36 near_expr
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| 11 | // 7 ADJ 17 BOOLEAN_FILTER 27 bool_arg 37 adj_expr
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| 12 | // 8 PLUS 18 RANGE 28 prob
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| 13 | // 9 MINUS 19 QUOTE 29 term
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| 14 |
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| 15 | query ::= expr.
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| 16 | query ::=.
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| 17 |
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| 18 | expr ::= binop.
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| 19 | expr ::= unop.
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| 20 | expr ::= prob.
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| 21 | expr ::= term.
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| 22 |
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| 23 | binop ::= expr AND expr.
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| 24 | binop ::= expr OR expr.
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| 25 | binop ::= expr XOR expr.
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| 26 | binop ::= expr PLUS expr.
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| 27 | binop ::= expr MINUS expr.
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| 28 |
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| 29 | unop ::= MINUS expr. [UMINUS]
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| 30 | unop ::= PLUS expr. [UPLUS]
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| 31 | unop ::= NOT expr.
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| 32 |
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| 33 | prob ::= term.
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| 34 | prob ::= term prob.
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| 35 | prob ::= BOOLEAN_FILTER.
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| 36 |
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| 37 | term ::= TERM.
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| 38 | term ::= RANGE.
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| 39 | term ::= compound_term.
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| 40 |
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| 41 | compound_term ::= WILD_TERM.
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| 42 | compound_term ::= PARTIAL_TERM.
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| 43 | compound_term ::= QUOTE phrase QUOTE.
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| 44 | compound_term ::= phrased_term.
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| 45 | compound_term ::= group.
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| 46 | compound_term ::= near_expr.
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| 47 | compound_term ::= adj_expr.
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| 48 | compound_term ::= BRA expr KET.
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| 49 | compound_term ::= SYNONYM TERM.
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| 50 |
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| 51 | phrase ::= TERM phrase.
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| 52 | phrase ::= TERM.
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| 53 |
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| 54 | phrased_term ::= TERM PHR_TERM.
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| 55 | phrased_term ::= PHR_TERM phrased_term.
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| 56 |
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| 57 | group ::= TERM GROUP_TERM.
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| 58 | group ::= GROUP_TERM group.
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| 59 | group ::= EMPTY_GROUP_OK.
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| 60 |
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| 61 | near_expr ::= TERM NEAR TERM.
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| 62 | near_expr ::= TERM NEAR near_expr.
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| 63 |
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| 64 | adj_expr ::= TERM ADJ TERM.
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| 65 | adj_expr ::= TERM ADJ adj_expr. |
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