1 files changed, 220 insertions, 0 deletions
diff --git a/vendor/github.com/robertkrimen/otto/property.go b/vendor/github.com/robertkrimen/otto/property.go
new file mode 100644
index 000000000..5445eccde
--- /dev/null
+++ b/vendor/github.com/robertkrimen/otto/property.go
@@ -0,0 +1,220 @@
+package otto
+
+// property
+
+type _propertyMode int
+
+const (
+	modeWriteMask     _propertyMode = 0700
+	modeEnumerateMask               = 0070
+	modeConfigureMask               = 0007
+	modeOnMask                      = 0111
+	modeOffMask                     = 0000
+	modeSetMask                     = 0222 // If value is 2, then mode is neither "On" nor "Off"
+)
+
+type _propertyGetSet [2]*_object
+
+var _nilGetSetObject _object = _object{}
+
+type _property struct {
+	value interface{}
+	mode  _propertyMode
+}
+
+func (self _property) writable() bool {
+	return self.mode&modeWriteMask == modeWriteMask&modeOnMask
+}
+
+func (self *_property) writeOn() {
+	self.mode = (self.mode & ^modeWriteMask) | (modeWriteMask & modeOnMask)
+}
+
+func (self *_property) writeOff() {
+	self.mode &= ^modeWriteMask
+}
+
+func (self *_property) writeClear() {
+	self.mode = (self.mode & ^modeWriteMask) | (modeWriteMask & modeSetMask)
+}
+
+func (self _property) writeSet() bool {
+	return 0 == self.mode&modeWriteMask&modeSetMask
+}
+
+func (self _property) enumerable() bool {
+	return self.mode&modeEnumerateMask == modeEnumerateMask&modeOnMask
+}
+
+func (self *_property) enumerateOn() {
+	self.mode = (self.mode & ^modeEnumerateMask) | (modeEnumerateMask & modeOnMask)
+}
+
+func (self *_property) enumerateOff() {
+	self.mode &= ^modeEnumerateMask
+}
+
+func (self _property) enumerateSet() bool {
+	return 0 == self.mode&modeEnumerateMask&modeSetMask
+}
+
+func (self _property) configurable() bool {
+	return self.mode&modeConfigureMask == modeConfigureMask&modeOnMask
+}
+
+func (self *_property) configureOn() {
+	self.mode = (self.mode & ^modeConfigureMask) | (modeConfigureMask & modeOnMask)
+}
+
+func (self *_property) configureOff() {
+	self.mode &= ^modeConfigureMask
+}
+
+func (self _property) configureSet() bool {
+	return 0 == self.mode&modeConfigureMask&modeSetMask
+}
+
+func (self _property) copy() *_property {
+	property := self
+	return &property
+}
+
+func (self _property) get(this *_object) Value {
+	switch value := self.value.(type) {
+	case Value:
+		return value
+	case _propertyGetSet:
+		if value[0] != nil {
+			return value[0].call(toValue(this), nil, false, nativeFrame)
+		}
+	}
+	return Value{}
+}
+
+func (self _property) isAccessorDescriptor() bool {
+	setGet, test := self.value.(_propertyGetSet)
+	return test && (setGet[0] != nil || setGet[1] != nil)
+}
+
+func (self _property) isDataDescriptor() bool {
+	if self.writeSet() { // Either "On" or "Off"
+		return true
+	}
+	value, valid := self.value.(Value)
+	return valid && !value.isEmpty()
+}
+
+func (self _property) isGenericDescriptor() bool {
+	return !(self.isDataDescriptor() || self.isAccessorDescriptor())
+}
+
+func (self _property) isEmpty() bool {
+	return self.mode == 0222 && self.isGenericDescriptor()
+}
+
+// _enumerableValue, _enumerableTrue, _enumerableFalse?
+// .enumerableValue() .enumerableExists()
+
+func toPropertyDescriptor(rt *_runtime, value Value) (descriptor _property) {
+	objectDescriptor := value._object()
+	if objectDescriptor == nil {
+		panic(rt.panicTypeError())
+	}
+
+	{
+		descriptor.mode = modeSetMask // Initially nothing is set
+		if objectDescriptor.hasProperty("enumerable") {
+			if objectDescriptor.get("enumerable").bool() {
+				descriptor.enumerateOn()
+			} else {
+				descriptor.enumerateOff()
+			}
+		}
+
+		if objectDescriptor.hasProperty("configurable") {
+			if objectDescriptor.get("configurable").bool() {
+				descriptor.configureOn()
+			} else {
+				descriptor.configureOff()
+			}
+		}
+
+		if objectDescriptor.hasProperty("writable") {
+			if objectDescriptor.get("writable").bool() {
+				descriptor.writeOn()
+			} else {
+				descriptor.writeOff()
+			}
+		}
+	}
+
+	var getter, setter *_object
+	getterSetter := false
+
+	if objectDescriptor.hasProperty("get") {
+		value := objectDescriptor.get("get")
+		if value.IsDefined() {
+			if !value.isCallable() {
+				panic(rt.panicTypeError())
+			}
+			getter = value._object()
+			getterSetter = true
+		} else {
+			getter = &_nilGetSetObject
+			getterSetter = true
+		}
+	}
+
+	if objectDescriptor.hasProperty("set") {
+		value := objectDescriptor.get("set")
+		if value.IsDefined() {
+			if !value.isCallable() {
+				panic(rt.panicTypeError())
+			}
+			setter = value._object()
+			getterSetter = true
+		} else {
+			setter = &_nilGetSetObject
+			getterSetter = true
+		}
+	}
+
+	if getterSetter {
+		if descriptor.writeSet() {
+			panic(rt.panicTypeError())
+		}
+		descriptor.value = _propertyGetSet{getter, setter}
+	}
+
+	if objectDescriptor.hasProperty("value") {
+		if getterSetter {
+			panic(rt.panicTypeError())
+		}
+		descriptor.value = objectDescriptor.get("value")
+	}
+
+	return
+}
+
+func (self *_runtime) fromPropertyDescriptor(descriptor _property) *_object {
+	object := self.newObject()
+	if descriptor.isDataDescriptor() {
+		object.defineProperty("value", descriptor.value.(Value), 0111, false)
+		object.defineProperty("writable", toValue_bool(descriptor.writable()), 0111, false)
+	} else if descriptor.isAccessorDescriptor() {
+		getSet := descriptor.value.(_propertyGetSet)
+		get := Value{}
+		if getSet[0] != nil {
+			get = toValue_object(getSet[0])
+		}
+		set := Value{}
+		if getSet[1] != nil {
+			set = toValue_object(getSet[1])
+		}
+		object.defineProperty("get", get, 0111, false)
+		object.defineProperty("set", set, 0111, false)
+	}
+	object.defineProperty("enumerable", toValue_bool(descriptor.enumerable()), 0111, false)
+	object.defineProperty("configurable", toValue_bool(descriptor.configurable()), 0111, false)
+	return object
+}