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Decoupled runtime and HTML driver initialization (#198)

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* Decoupled runtime and HTML driver initialization

* Updates
This commit is contained in:
Tim Voronov
2018-11-30 19:30:55 -05:00
committed by GitHub
parent 0ce0426b55
commit 39e379f0f2
16 changed files with 205 additions and 195 deletions
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13
examples/extensible.go
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@ -4,10 +4,12 @@ import (
"context"
"encoding/json"
"fmt"
"os"
"strings"
"github.com/MontFerret/ferret/pkg/compiler"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
"os"
)
func main() {
@ -27,7 +29,7 @@ func getStrings() ([]string, error) {
// function implements is a type of a function that ferret supports as a runtime function
transform := func(ctx context.Context, args ...core.Value) (core.Value, error) {
// it's just a helper function which helps to validate a number of passed args
err := core.ValidateArgs(args, 1)
err := core.ValidateArgs(args, 1, 1)
if err != nil {
// it's recommended to return built-in None type, instead of nil
@ -44,7 +46,7 @@ func getStrings() ([]string, error) {
// cast to built-in string type
str := args[0].(values.String)
return str.Concat(values.NewString("_ferret")).ToUpper(), nil
return values.NewString(strings.ToUpper(str.String() + "_ferret")), nil
}
query := `
@ -54,7 +56,10 @@ func getStrings() ([]string, error) {
`
comp := compiler.New()
comp.RegisterFunction("transform", transform)
if err := comp.RegisterFunction("transform", transform); err != nil {
return nil, err
}
program, err := comp.Compile(query)