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mirror of https://github.com/MontFerret/ferret.git synced 2024-12-23 01:24:30 +02:00
ferret/pkg/runtime/expressions/return.go
Tim Voronov 5620be211c
Next (#214)
* Renamed DOCUMENT to PAGE

* Added PageLoadParams

* Added PageLoadParams

* Renamed LoadPageParams -> PageLoadParams

* Added support for context.Done() (#201)

* Bug/#189 operators precedence (#202)

* Fixed math operators precedence

* Fixed logical operators precedence

* Fixed array operator

* Added support for parentheses to enforce a different operator evaluation order

* Feature/#200 drivers (#209)

* Added new interfaces

* Renamed dynamic to cdp driver

* Renamed drivers

* Added ELEMENT_EXISTS function (#210)

* Renamed back PAGE to DOCUMENT (#211)

* Added Getter and Setter interfaces
2018-12-21 23:14:41 -05:00

44 lines
810 B
Go

package expressions
import (
"context"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
)
type (
ReturnExpression struct {
src core.SourceMap
predicate core.Expression
}
)
func NewReturnExpression(
src core.SourceMap,
predicate core.Expression,
) (*ReturnExpression, error) {
if predicate == nil {
return nil, core.Error(core.ErrMissedArgument, "expression")
}
return &ReturnExpression{
src,
predicate,
}, nil
}
func (e *ReturnExpression) Exec(ctx context.Context, scope *core.Scope) (core.Value, error) {
select {
case <-ctx.Done():
return values.None, core.ErrTerminated
default:
val, err := e.predicate.Exec(ctx, scope)
if err != nil {
return values.None, core.SourceError(e.src, err)
}
return val, nil
}
}