mirror of
https://gitlab.com/pulsechaincom/go-pulse.git
synced 2024-12-25 04:47:17 +00:00
7b68975a00
This replaces the JavaScript interpreter used by the console with goja, which is actively maintained and a lot faster than otto. Clef still uses otto and eth/tracers still uses duktape, so we are currently dependent on three different JS interpreters. We're looking to replace the remaining uses of otto soon though.
83 lines
2.5 KiB
Go
83 lines
2.5 KiB
Go
// Copyright 2016 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package jsre
|
|
|
|
import (
|
|
"sort"
|
|
"strings"
|
|
|
|
"github.com/dop251/goja"
|
|
)
|
|
|
|
// CompleteKeywords returns potential continuations for the given line. Since line is
|
|
// evaluated, callers need to make sure that evaluating line does not have side effects.
|
|
func (jsre *JSRE) CompleteKeywords(line string) []string {
|
|
var results []string
|
|
jsre.Do(func(vm *goja.Runtime) {
|
|
results = getCompletions(vm, line)
|
|
})
|
|
return results
|
|
}
|
|
|
|
func getCompletions(vm *goja.Runtime, line string) (results []string) {
|
|
parts := strings.Split(line, ".")
|
|
if len(parts) == 0 {
|
|
return nil
|
|
}
|
|
|
|
// Find the right-most fully named object in the line. e.g. if line = "x.y.z"
|
|
// and "x.y" is an object, obj will reference "x.y".
|
|
obj := vm.GlobalObject()
|
|
for i := 0; i < len(parts)-1; i++ {
|
|
v := obj.Get(parts[i])
|
|
if v == nil {
|
|
return nil // No object was found
|
|
}
|
|
obj = v.ToObject(vm)
|
|
}
|
|
|
|
// Go over the keys of the object and retain the keys matching prefix.
|
|
// Example: if line = "x.y.z" and "x.y" exists and has keys "zebu", "zebra"
|
|
// and "platypus", then "x.y.zebu" and "x.y.zebra" will be added to results.
|
|
prefix := parts[len(parts)-1]
|
|
iterOwnAndConstructorKeys(vm, obj, func(k string) {
|
|
if strings.HasPrefix(k, prefix) {
|
|
if len(parts) == 1 {
|
|
results = append(results, k)
|
|
} else {
|
|
results = append(results, strings.Join(parts[:len(parts)-1], ".")+"."+k)
|
|
}
|
|
}
|
|
})
|
|
|
|
// Append opening parenthesis (for functions) or dot (for objects)
|
|
// if the line itself is the only completion.
|
|
if len(results) == 1 && results[0] == line {
|
|
obj := obj.Get(parts[len(parts)-1])
|
|
if obj != nil {
|
|
if _, isfunc := goja.AssertFunction(obj); isfunc {
|
|
results[0] += "("
|
|
} else {
|
|
results[0] += "."
|
|
}
|
|
}
|
|
}
|
|
|
|
sort.Strings(results)
|
|
return results
|
|
}
|