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Add draft grammar for KQL 1.0.0 (#303) 

* Add draft grammar for KQL 1.0.0

* Change whitespace in KQL grammar

* Update KQL grammar to use new operators
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Lars Willighagen 2022-10-09 21:04:10 +02:00 committed by GitHub
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18
QUERY-SPEC.md
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@ -101,3 +101,21 @@ Then the following queries are valid:
* `dependencies > []` * `dependencies > []`
* -> fetches all direct-child nodes of any `dependencies` nodes in the * -> fetches all direct-child nodes of any `dependencies` nodes in the
document. In this case, it will fetch both `miette` and `winapi` nodes. document. In this case, it will fetch both `miette` and `winapi` nodes.
## Full Grammar
For rules that are not defined in this grammar, see [the KDL grammar](https://github.com/kdl-org/kdl/blob/main/SPEC.md#full-grammar).
```
query := selector q-ws* "||" q-ws* query | selector
selector := filter q-ws* selector-operator q-ws* selector | filter
selector-operator := ">>" | ">" | "++" | "+"
filter := matcher+
matcher := "top()"| "()" | identifier | type | accessor-matcher
accessor-matcher := "[" (comparison | accessor)? "]"
comparison := accessor q-ws* matcher-operator q-ws* (type | string | number | keyword)
accessor := "val(" number ")" | "prop(" identifier ")" | "name()" | "tag()" | "values()" | "props()" | identifier
matcher-operator := "=" | "!=" | ">" | "<" | ">=" | "<=" | "^=" | "$=" | "*="
q-ws := bom | unicode-space
```