69 lines
1.2 KiB
Plaintext
69 lines
1.2 KiB
Plaintext
@precedence { logic @left }
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@top Program { Query }
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@skip { space }
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Query {
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Name ( WhereClause | LimitClause | OrderClause | SelectClause | RenderClause )*
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}
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commaSep<content> { content ("," content)* }
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WhereClause { Where LogicalExpr }
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LimitClause { Limit Number }
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OrderClause { Order Name OrderDirection? }
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SelectClause { Select commaSep<Name> }
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RenderClause { Render (PageRef | String) }
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OrderDirection {
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"desc" | "asc"
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}
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Value { Number | String | Bool | Regex | Null | List }
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LogicalExpr { FilterExpr (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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| Name "!=~" Value
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| Name "in" Value
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}
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List { "[" commaSep<Value> "]" }
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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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Where { "where" }
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Order { "order by" }
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Select { "select" }
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Render { "render" }
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Limit { "limit" }
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And { "and" }
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Null { "null" }
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String {
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("\"" | "“" | "”") ![\"”“]* ("\"" | "“" | "”")
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}
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PageRef {
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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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// @precedence { Where, Sort, Select, Render, Limit, And, Null, Name }
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}
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