Documentation
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Overview ¶
Package validator wraps boxer's nanopass.Parse (ClickHouse Grammar1) to provide sub-millisecond in-process syntax validation for the time range picker's expression fields. The picker calls Validate on every keystroke; on parse error it surfaces a red underline in the field. Evaluation against clickhouse-local is deferred until Apply (see the evaluator sub-package).
Index ¶
Constants ¶
This section is empty.
Variables ¶
var PackageProps = packageprops.Props{ WASMWASI: packageprops.WASMCompiles, WASMJS: packageprops.WASMCompiles, WASMFreestanding: packageprops.WASMCompiles, }
PackageProps records this package's curated properties (ADR-0080). Seeded by `boxer code analysis golang wasmsurvey props generate`; curate by hand. The same group's `props verify` reconciles it.
Functions ¶
func Validate ¶
Validate parses the given ClickHouse SQL fragment using boxer's Grammar1 parser. Returns nil on parse success; returns an error describing the first syntax error otherwise.
The fragment is wrapped in a SELECT before parsing because Grammar1 expects a QueryStmt at the root, while user expressions are bare relative-expressions. A fragment "anchor_now - INTERVAL 5 MINUTE" is parsed as if the user wrote "SELECT anchor_now - INTERVAL 5 MINUTE", which is a valid QueryStmt with a single projection.
Empty fragments are rejected with a dedicated message rather than being passed to the parser (which would surface a less helpful "expected expression" error).
Types ¶
This section is empty.
Source Files