goparsify/json/json.go
2017-08-10 22:06:08 +10:00

42 lines
962 B
Go

package json
import (
. "github.com/vektah/goparsify"
)
var (
_value Parser
_null = Bind("null", nil)
_true = Bind("true", true)
_false = Bind("false", false)
_string = StringLit(`"`)
_number = NumberLit()
_properties = Some(Seq(StringLit(`"`), ":", &_value), ",")
_array = Map(Seq("[", Cut, Some(&_value, ","), "]"), func(n Result) Result {
ret := []interface{}{}
for _, child := range n.Child[2].Child {
ret = append(ret, child.Result)
}
return Result{Result: ret}
})
_object = Map(Seq("{", Cut, _properties, "}"), func(n Result) Result {
ret := map[string]interface{}{}
for _, prop := range n.Child[2].Child {
ret[prop.Child[0].Result.(string)] = prop.Child[2].Result
}
return Result{Result: ret}
})
)
func init() {
_value = Any(_null, _true, _false, _string, _number, _array, _object)
}
func Unmarshal(input string) (interface{}, error) {
return Run(_value, input, ASCIIWhitespace)
}