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expr: prefix operators length/1, index/3 and substr/3

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Roman Gafiyatullin 2015-10-09 18:32:35 +03:00
parent 092e4d1ed4
commit 7b54410557
3 changed files with 56 additions and 3 deletions
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6
src/expr/expr.rs
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@ -105,9 +105,9 @@ separates increasing precedence groups. EXPRESSION may be:
STRING : REGEXP [NOT IMPLEMENTED] anchored pattern match of REGEXP in STRING
match STRING REGEXP [NOT IMPLEMENTED] same as STRING : REGEXP
substr STRING POS LENGTH [NOT IMPLEMENTED] substring of STRING, POS counted from 1
index STRING CHARS [NOT IMPLEMENTED] index in STRING where any CHARS is found, or 0
length STRING [NOT IMPLEMENTED] length of STRING
substr STRING POS LENGTH substring of STRING, POS counted from 1
index STRING CHARS index in STRING where any CHARS is found, or 0
length STRING length of STRING
+ TOKEN interpret TOKEN as a string, even if it is a
keyword like 'match' or an operator like '/'