expr

type And ¶ added in v1.14.0

type And struct {
	// contains filtered or unexported fields
}

func NewLogicalAnd(zctx *zed.Context, lhs, rhs Evaluator) *And

func (a *And) Eval(val vector.Any) vector.Any

type Arith ¶ added in v1.17.0

type Arith struct {
	// contains filtered or unexported fields
}

func NewArith(zctx *zed.Context, lhs, rhs Evaluator, op string) *Arith

func (a *Arith) Eval(val vector.Any) vector.Any

type Call ¶ added in v1.18.0

type Call struct {
	// contains filtered or unexported fields
}

func NewCall(fn Function, exprs []Evaluator) *Call

func (c *Call) Eval(this vector.Any) vector.Any

type Compare ¶ added in v1.14.0

type Compare struct {
	// contains filtered or unexported fields
}

func NewCompare(zctx *zed.Context, lhs, rhs Evaluator, op string) *Compare

func (c *Compare) Eval(val vector.Any) vector.Any

type DotExpr ¶

type DotExpr struct {
	// contains filtered or unexported fields
}

func NewDotExpr(zctx *zed.Context, record Evaluator, field string) *DotExpr

func (d *DotExpr) Eval(vec vector.Any) vector.Any

type Evaluator ¶

type Evaluator interface {
	Eval(vector.Any) vector.Any
}

func NewDottedExpr(zctx *zed.Context, f field.Path) Evaluator

func NewIndexExpr(zctx *zed.Context, container, index Evaluator) Evaluator

func NewRecordExpr(zctx *zed.Context, elems []RecordElem) Evaluator

type Function ¶ added in v1.18.0

type Function interface {
	Call(...vector.Any) vector.Any
}

type Index ¶ added in v1.18.0

type Index struct {
	// contains filtered or unexported fields
}

Index represents an index operator "container[index]" where container is either an array or set (with index type integer), or a record (with index type string), or a map (with any index type).

func (i *Index) Eval(this vector.Any) vector.Any

type Literal ¶ added in v1.14.0

type Literal struct {
	// contains filtered or unexported fields
}

func NewLiteral(val zed.Value) *Literal

func (l Literal) Eval(val vector.Any) vector.Any

type Not ¶ added in v1.14.0

type Not struct {
	// contains filtered or unexported fields
}

func NewLogicalNot(zctx *zed.Context, e Evaluator) *Not

func (n *Not) Eval(val vector.Any) vector.Any

type Or ¶ added in v1.14.0

type Or struct {
	// contains filtered or unexported fields
}

func NewLogicalOr(zctx *zed.Context, lhs, rhs Evaluator) *Or

func (o *Or) Eval(val vector.Any) vector.Any

type Putter ¶ added in v1.18.0

type Putter struct {
	// contains filtered or unexported fields
}

Putter adapts the behavior of recordExpr (obtained from NewRecordExpr) to match that of the put operator, which emits an error when an input value is not a record.

func NewPutter(zctx *zed.Context, recordExpr Evaluator) *Putter

func (p *Putter) Eval(vec vector.Any) vector.Any

type RecordElem ¶ added in v1.18.0

type RecordElem struct {
	Name string // "" means spread.
	Expr Evaluator
}

type Renamer ¶ added in v1.18.0

type Renamer struct {
	// contains filtered or unexported fields
}

Renamer renames one or more fields in a record. See expr.Renamer, on which it relies, for more detail.

func NewRenamer(zctx *zed.Context, srcs, dsts []*expr.Lval) *Renamer

func (r *Renamer) Eval(vec vector.Any) vector.Any

type This ¶

type This struct{}

func (*This) Eval(val vector.Any) vector.Any