49 lines
784 B
Plaintext
49 lines
784 B
Plaintext
@precedence { logic @left }
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@top Program { Query }
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Query {
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Name (WhereClause | OrderClause | LimitClause)*
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}
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WhereClause { "where" LogicalExpr }
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OrderClause { "order" "by" Name Order? }
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LimitClause { "limit" Number }
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Order {
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"desc" | "asc"
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}
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Value { Number | String | Bool | Regex }
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LogicalExpr { AndExpr | FilterExpr }
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AndExpr { FilterExpr !logic "and" FilterExpr }
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FilterExpr {
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Name "<" Value
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| Name "<=" Value
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| Name "=" Value
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| Name "!=" Value
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| Name ">=" Value
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| Name ">" Value
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| Name "=~" Value
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}
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@skip { space }
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Bool {
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"true" | "false"
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}
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@tokens {
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space { std.whitespace+ }
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Name { std.asciiLetter+ }
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String {
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("\"" | "“" | "”") ![\"”“]* ("\"" | "“" | "”")
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}
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Regex { "/" ( ![/\\\n\r] | "\\" _ )* "/"? }
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Number { std.digit+ }
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}
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