parser

Documentation

Index

• type Query
  • func RegexpQuery(re *syntax.Regexp) *Query
  • func (q *Query) String() string
• type QueryOp

Types

type Query

type Query struct {
	Op      QueryOp
	Trigram []string
	Sub     []*Query
}

A Query is a matching machine, like a regular expression, that matches some text and not other text. When we compute a Query from a regexp, the Query is a conservative version of the regexp: it matches everything the regexp would match, and probably quite a bit more. We can then filter target files by whether they match the Query (using a trigram index) before running the comparatively more expensive regexp machinery.

func RegexpQuery

func RegexpQuery(re *syntax.Regexp) *Query

RegexpQuery returns a Query for the given regexp.

func (*Query) String

func (q *Query) String() string

type QueryOp

type QueryOp int

const (
	QAll  QueryOp = iota // Everything matches
	QNone                // Nothing matches
	QAnd                 // All in Sub and Trigram must match
	QOr                  // At least one in Sub or Trigram must match
)