英文:
how can I compile javascript code in golang and get the detail error
问题
我正在使用Go语言进行一个项目。我需要在Go中运行一段JavaScript代码。我知道有一个叫做otto的包可以实现这个功能。我的问题是如何获取JavaScript代码的详细错误信息。例如：
src :=`
abc = 2 +
console.log("The value of abc is " + abc)
`
当我执行compile(src)时，我会得到以下错误信息：
第二行缺少某些内容，第三行缺少分号，就像编译器一样。
在发布问题之前，我已经尝试使用otto的编译函数，但返回的错误为nil。
对于上述代码，使用func (self Otto) Run(src interface{}) (Value, error)会返回错误，但如果代码变成：
abc = 9
abc = 2 +
console.log("The value of abc is " + abc)
对于func (self Otto) Run(src interface{}) (Value, error)和func (self *Otto) Compile(filename string, src interface{}) (*Script, error)，错误都是nil。
英文:
I am using go language for a project. I need run a piece of js code in go. I know there is an package which is otto. My problem is that how I get the detail error message for the js code. For example:
src :=`
abc = 2 +
console.log("The value of abc is " + abc)
`
and when I do something let's say compile(src).
Then I will get the error that:
Miss something at second line and miss ';' at third line.
just like a compiler doing
I already try using the compile of otto before I post the problem, the returned error is nil.
Using func (self Otto) Run(src interface{}) (Value, error) of otto for above code will return error, but if the code became
abc = 9
abc = 2 +
console.log("The value of abc is " + abc)
for both func (self Otto) Run(src interface{}) (Value, error) and func (self *Otto) Compile(filename string, src interface{}) (*Script, error) the error are nil
答案1
得分: 1
我会为你进行不足的研究进行扣分。简单地在Google上搜索"golang otto"会出现GitHub页面。有一个相当不错的README.markdown文件用于文档说明。请阅读它。
然后你会发现Otto有以下内容：
func (self *Otto) Compile(filename string, src interface{}) (*Script, error)
这是最好的方法了。运行它，看看返回的错误值是什么。
type Error struct {
}
Error代表运行时错误，例如TypeError、ReferenceError等。
func (err Error) Error() string
Error返回错误的描述。
func (err Error) String() string
String返回错误的描述以及错误发生的跟踪。
英文:
I'm going to ding you for insufficient research. A simple Google of "golang otto" brought up the Github page. With a pretty decent README.markdown for documentation. Read it.
Then you find out that Otto has
func (self *Otto) Compile(filename string, src interface{}) (*Script, error)
That is as good as it gets. Run that, see what you get in the returned error value.
type Error struct {
}
An Error represents a runtime error, e.g. a TypeError, a ReferenceError, etc.
func (err Error) Error() string
Error returns a description of the error
func (err Error) String() string
String returns a description of the error and a trace of where the error occurred.
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