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console, internal/jsre: fix autocomplete issues (#26518)

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Fixes #26505 where the console crashed when a property getter
raised an exception during autocompletion. I also noticed while fixing this
issue that autocomplete wasn't working for objects/fields with numbers in
them (most importantly web3.<tab><tab>) which is also now fixed.
This commit is contained in:
Sina Mahmoodi 2023-01-19 19:43:29 +01:00 committed by GitHub
parent 690338f0fa
commit 2d2c069ffe
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 14 additions and 7 deletions
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8
console/console.go
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@ -305,12 +305,8 @@ func (c *Console) AutoCompleteInput(line string, pos int) (string, []string, str
start := pos - 1
for ; start > 0; start-- {
// Skip all methods and namespaces (i.e. including the dot)
if line[start] == '.' || (line[start] >= 'a' && line[start] <= 'z') || (line[start] >= 'A' && line[start] <= 'Z') {
continue
}
// Handle web3 in a special way (i.e. other numbers aren't auto completed)
if start >= 3 && line[start-3:start] == "web3" {
start -= 3
c := line[start]
if c == '.' || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '1' && c <= '9') {
continue
}
// We've hit an unexpected character, autocomplete form here

13
internal/jsre/completion.go
View File

@ -17,12 +17,16 @@
package jsre
import (
"regexp"
"sort"
"strings"
"github.com/dop251/goja"
)
// JS numerical token
var numerical = regexp.MustCompile(`^(NaN|-?((\d*\.\d+|\d+)([Ee][+-]?\d+)?|Infinity))$`)
// 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 {
@ -43,6 +47,9 @@ func getCompletions(vm *goja.Runtime, line string) (results []string) {
// and "x.y" is an object, obj will reference "x.y".
obj := vm.GlobalObject()
for i := 0; i < len(parts)-1; i++ {
if numerical.MatchString(parts[i]) {
return nil
}
v := obj.Get(parts[i])
if v == nil || goja.IsNull(v) || goja.IsUndefined(v) {
return nil // No object was found
@ -67,7 +74,11 @@ func getCompletions(vm *goja.Runtime, line string) (results []string) {
// 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])
// Accessing the property will cause it to be evaluated.
// This can cause an error, e.g. in case of web3.eth.protocolVersion
// which has been dropped from geth. Ignore the error for autocompletion
// purposes.
obj := SafeGet(obj, parts[len(parts)-1])
if obj != nil {
if _, isfunc := goja.AssertFunction(obj); isfunc {
results[0] += "("