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|
package otto
import (
"bytes"
"encoding/json"
"fmt"
"strings"
)
type _builtinJSON_parseContext struct {
call FunctionCall
reviver Value
}
func builtinJSON_parse(call FunctionCall) Value {
ctx := _builtinJSON_parseContext{
call: call,
}
revive := false
if reviver := call.Argument(1); reviver.isCallable() {
revive = true
ctx.reviver = reviver
}
var root interface{}
err := json.Unmarshal([]byte(call.Argument(0).string()), &root)
if err != nil {
panic(call.runtime.panicSyntaxError(err.Error()))
}
value, exists := builtinJSON_parseWalk(ctx, root)
if !exists {
value = Value{}
}
if revive {
root := ctx.call.runtime.newObject()
root.put("", value, false)
return builtinJSON_reviveWalk(ctx, root, "")
}
return value
}
func builtinJSON_reviveWalk(ctx _builtinJSON_parseContext, holder *_object, name string) Value {
value := holder.get(name)
if object := value._object(); object != nil {
if isArray(object) {
length := int64(objectLength(object))
for index := int64(0); index < length; index += 1 {
name := arrayIndexToString(index)
value := builtinJSON_reviveWalk(ctx, object, name)
if value.IsUndefined() {
object.delete(name, false)
} else {
object.defineProperty(name, value, 0111, false)
}
}
} else {
object.enumerate(false, func(name string) bool {
value := builtinJSON_reviveWalk(ctx, object, name)
if value.IsUndefined() {
object.delete(name, false)
} else {
object.defineProperty(name, value, 0111, false)
}
return true
})
}
}
return ctx.reviver.call(ctx.call.runtime, toValue_object(holder), name, value)
}
func builtinJSON_parseWalk(ctx _builtinJSON_parseContext, rawValue interface{}) (Value, bool) {
switch value := rawValue.(type) {
case nil:
return nullValue, true
case bool:
return toValue_bool(value), true
case string:
return toValue_string(value), true
case float64:
return toValue_float64(value), true
case []interface{}:
arrayValue := make([]Value, len(value))
for index, rawValue := range value {
if value, exists := builtinJSON_parseWalk(ctx, rawValue); exists {
arrayValue[index] = value
}
}
return toValue_object(ctx.call.runtime.newArrayOf(arrayValue)), true
case map[string]interface{}:
object := ctx.call.runtime.newObject()
for name, rawValue := range value {
if value, exists := builtinJSON_parseWalk(ctx, rawValue); exists {
object.put(name, value, false)
}
}
return toValue_object(object), true
}
return Value{}, false
}
type _builtinJSON_stringifyContext struct {
call FunctionCall
stack []*_object
propertyList []string
replacerFunction *Value
gap string
}
func builtinJSON_stringify(call FunctionCall) Value {
ctx := _builtinJSON_stringifyContext{
call: call,
stack: []*_object{nil},
}
replacer := call.Argument(1)._object()
if replacer != nil {
if isArray(replacer) {
length := objectLength(replacer)
seen := map[string]bool{}
propertyList := make([]string, length)
length = 0
for index, _ := range propertyList {
value := replacer.get(arrayIndexToString(int64(index)))
switch value.kind {
case valueObject:
switch value.value.(*_object).class {
case "String":
case "Number":
default:
continue
}
case valueString:
case valueNumber:
default:
continue
}
name := value.string()
if seen[name] {
continue
}
seen[name] = true
length += 1
propertyList[index] = name
}
ctx.propertyList = propertyList[0:length]
} else if replacer.class == "Function" {
value := toValue_object(replacer)
ctx.replacerFunction = &value
}
}
if spaceValue, exists := call.getArgument(2); exists {
if spaceValue.kind == valueObject {
switch spaceValue.value.(*_object).class {
case "String":
spaceValue = toValue_string(spaceValue.string())
case "Number":
spaceValue = spaceValue.numberValue()
}
}
switch spaceValue.kind {
case valueString:
value := spaceValue.string()
if len(value) > 10 {
ctx.gap = value[0:10]
} else {
ctx.gap = value
}
case valueNumber:
value := spaceValue.number().int64
if value > 10 {
value = 10
} else if value < 0 {
value = 0
}
ctx.gap = strings.Repeat(" ", int(value))
}
}
holder := call.runtime.newObject()
holder.put("", call.Argument(0), false)
value, exists := builtinJSON_stringifyWalk(ctx, "", holder)
if !exists {
return Value{}
}
valueJSON, err := json.Marshal(value)
if err != nil {
panic(call.runtime.panicTypeError(err.Error()))
}
if ctx.gap != "" {
valueJSON1 := bytes.Buffer{}
json.Indent(&valueJSON1, valueJSON, "", ctx.gap)
valueJSON = valueJSON1.Bytes()
}
return toValue_string(string(valueJSON))
}
func builtinJSON_stringifyWalk(ctx _builtinJSON_stringifyContext, key string, holder *_object) (interface{}, bool) {
value := holder.get(key)
if value.IsObject() {
object := value._object()
if toJSON := object.get("toJSON"); toJSON.IsFunction() {
value = toJSON.call(ctx.call.runtime, value, key)
} else {
// If the object is a GoStruct or something that implements json.Marshaler
if object.objectClass.marshalJSON != nil {
marshaler := object.objectClass.marshalJSON(object)
if marshaler != nil {
return marshaler, true
}
}
}
}
if ctx.replacerFunction != nil {
value = (*ctx.replacerFunction).call(ctx.call.runtime, toValue_object(holder), key, value)
}
if value.kind == valueObject {
switch value.value.(*_object).class {
case "Boolean":
value = value._object().value.(Value)
case "String":
value = toValue_string(value.string())
case "Number":
value = value.numberValue()
}
}
switch value.kind {
case valueBoolean:
return value.bool(), true
case valueString:
return value.string(), true
case valueNumber:
integer := value.number()
switch integer.kind {
case numberInteger:
return integer.int64, true
case numberFloat:
return integer.float64, true
default:
return nil, true
}
case valueNull:
return nil, true
case valueObject:
holder := value._object()
if value := value._object(); nil != value {
for _, object := range ctx.stack {
if holder == object {
panic(ctx.call.runtime.panicTypeError("Converting circular structure to JSON"))
}
}
ctx.stack = append(ctx.stack, value)
defer func() { ctx.stack = ctx.stack[:len(ctx.stack)-1] }()
}
if isArray(holder) {
var length uint32
switch value := holder.get("length").value.(type) {
case uint32:
length = value
case int:
if value >= 0 {
length = uint32(value)
}
default:
panic(ctx.call.runtime.panicTypeError(fmt.Sprintf("JSON.stringify: invalid length: %v (%[1]T)", value)))
}
array := make([]interface{}, length)
for index, _ := range array {
name := arrayIndexToString(int64(index))
value, _ := builtinJSON_stringifyWalk(ctx, name, holder)
array[index] = value
}
return array, true
} else if holder.class != "Function" {
object := map[string]interface{}{}
if ctx.propertyList != nil {
for _, name := range ctx.propertyList {
value, exists := builtinJSON_stringifyWalk(ctx, name, holder)
if exists {
object[name] = value
}
}
} else {
// Go maps are without order, so this doesn't conform to the ECMA ordering
// standard, but oh well...
holder.enumerate(false, func(name string) bool {
value, exists := builtinJSON_stringifyWalk(ctx, name, holder)
if exists {
object[name] = value
}
return true
})
}
return object, true
}
}
return nil, false
}
|
