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[#280] policy: Use policyVisitor as ErrorListener for QueryLexer

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Share `policyVisitor` instance as an `ErrorListener` provider for both
`QueryLexer` and `Query`.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
This commit is contained in:
Leonard Lyubich 2022-06-28 13:42:35 +03:00 • committed by fyrchik
parent dea3d9c419
commit ab4d1e34a8
2 changed files with 13 additions and 3 deletions
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5
netmap/policy.go
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@ -551,16 +551,17 @@ func writeFilterStringTo(w io.StringWriter, f netmap.Filter) error {
// DecodeString decodes PlacementPolicy from the string composed using
// WriteStringTo. Returns error if s is malformed.
func (p *PlacementPolicy) DecodeString(s string) error {
var v policyVisitor
input := antlr.NewInputStream(s)
lexer := parser.NewQueryLexer(input)
lexer.RemoveErrorListeners()
lexer.AddErrorListener(&v)
stream := antlr.NewCommonTokenStream(lexer, 0)
pp := parser.NewQuery(stream)
pp.BuildParseTrees = true
var v policyVisitor
pp.RemoveErrorListeners()
pp.AddErrorListener(&v)
pl := pp.Policy().Accept(&v)