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Merge pull request #1667 from fjl/pretty-printer-improvements

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jsre: pretty printer improvements
This commit is contained in:
Jeffrey Wilcke 2015-08-17 05:55:09 -07:00
commit 12805c738c
2 changed files with 18 additions and 6 deletions
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1
jsre/jsre.go
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@ -66,6 +66,7 @@ func New(assetPath string) *JSRE {
re.loopWg.Add(1)
go re.runEventLoop()
re.Set("loadScript", re.loadScript)
re.Set("inspect", prettyPrintJS)
return re
}

23
jsre/pretty.go
View File

@ -51,7 +51,15 @@ var boringKeys = map[string]bool{
// prettyPrint writes value to standard output.
func prettyPrint(vm *otto.Otto, value otto.Value) {
ppctx{vm}.printValue(value, 0)
ppctx{vm}.printValue(value, 0, false)
}
func prettyPrintJS(call otto.FunctionCall) otto.Value {
for _, v := range call.ArgumentList {
prettyPrint(call.Otto, v)
fmt.Println()
}
return otto.UndefinedValue()
}
type ppctx struct{ vm *otto.Otto }
@ -60,10 +68,10 @@ func (ctx ppctx) indent(level int) string {
return strings.Repeat(indentString, level)
}
func (ctx ppctx) printValue(v otto.Value, level int) {
func (ctx ppctx) printValue(v otto.Value, level int, inArray bool) {
switch {
case v.IsObject():
ctx.printObject(v.Object(), level)
ctx.printObject(v.Object(), level, inArray)
case v.IsNull():
specialColor.Print("null")
case v.IsUndefined():
@ -84,7 +92,7 @@ func (ctx ppctx) printValue(v otto.Value, level int) {
}
}
func (ctx ppctx) printObject(obj *otto.Object, level int) {
func (ctx ppctx) printObject(obj *otto.Object, level int, inArray bool) {
switch obj.Class() {
case "Array":
lv, _ := obj.Get("length")
@ -101,7 +109,7 @@ func (ctx ppctx) printObject(obj *otto.Object, level int) {
for i := int64(0); i < len; i++ {
el, err := obj.Get(strconv.FormatInt(i, 10))
if err == nil {
ctx.printValue(el, level+1)
ctx.printValue(el, level+1, true)
}
if i < len-1 {
fmt.Printf(", ")
@ -129,12 +137,15 @@ func (ctx ppctx) printObject(obj *otto.Object, level int) {
for i, k := range keys {
v, _ := obj.Get(k)
fmt.Printf("%s%s: ", ctx.indent(level+1), k)
ctx.printValue(v, level+1)
ctx.printValue(v, level+1, false)
if i < len(keys)-1 {
fmt.Printf(",")
}
fmt.Println()
}
if inArray {
level--
}
fmt.Printf("%s}", ctx.indent(level))
case "Function":