forked from golang/hotime
1035 lines
26 KiB
Go
1035 lines
26 KiB
Go
package otto
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import (
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"encoding/json"
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"fmt"
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"math"
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"reflect"
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"strconv"
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"unicode/utf16"
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)
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type _valueKind int
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const (
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valueUndefined _valueKind = iota
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valueNull
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valueNumber
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valueString
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valueBoolean
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valueObject
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// These are invalid outside of the runtime
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valueEmpty
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valueResult
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valueReference
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)
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// Value is the representation of a JavaScript value.
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type Value struct {
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kind _valueKind
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value interface{}
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}
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func (value Value) safe() bool {
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return value.kind < valueEmpty
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}
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var (
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emptyValue = Value{kind: valueEmpty}
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nullValue = Value{kind: valueNull}
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falseValue = Value{kind: valueBoolean, value: false}
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trueValue = Value{kind: valueBoolean, value: true}
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)
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// ToValue will convert an interface{} value to a value digestible by otto/JavaScript
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//
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// This function will not work for advanced types (struct, map, slice/array, etc.) and
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// you should use Otto.ToValue instead.
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func ToValue(value interface{}) (Value, error) {
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result := Value{}
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err := catchPanic(func() {
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result = toValue(value)
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})
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return result, err
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}
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func (value Value) isEmpty() bool {
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return value.kind == valueEmpty
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}
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// Undefined
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// UndefinedValue will return a Value representing undefined.
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func UndefinedValue() Value {
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return Value{}
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}
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// IsDefined will return false if the value is undefined, and true otherwise.
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func (value Value) IsDefined() bool {
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return value.kind != valueUndefined
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}
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// IsUndefined will return true if the value is undefined, and false otherwise.
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func (value Value) IsUndefined() bool {
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return value.kind == valueUndefined
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}
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// NullValue will return a Value representing null.
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func NullValue() Value {
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return Value{kind: valueNull}
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}
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// IsNull will return true if the value is null, and false otherwise.
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func (value Value) IsNull() bool {
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return value.kind == valueNull
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}
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// ---
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func (value Value) isCallable() bool {
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v, ok := value.value.(*_object)
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return ok && v.isCall()
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}
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// Call the value as a function with the given this value and argument list and
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// return the result of invocation. It is essentially equivalent to:
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//
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// value.apply(thisValue, argumentList)
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//
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// An undefined value and an error will result if:
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//
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// 1. There is an error during conversion of the argument list
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// 2. The value is not actually a function
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// 3. An (uncaught) exception is thrown
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func (value Value) Call(this Value, argumentList ...interface{}) (Value, error) {
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result := Value{}
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err := catchPanic(func() {
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// FIXME
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result = value.call(nil, this, argumentList...)
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})
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if !value.safe() {
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value = Value{}
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}
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return result, err
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}
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func (value Value) call(rt *_runtime, this Value, argumentList ...interface{}) Value {
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if function, ok := value.value.(*_object); ok {
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return function.call(this, function.runtime.toValueArray(argumentList...), false, nativeFrame)
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}
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if rt == nil {
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panic("FIXME TypeError")
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}
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panic(rt.panicTypeError())
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}
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func (value Value) constructSafe(rt *_runtime, this Value, argumentList ...interface{}) (Value, error) {
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result := Value{}
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err := catchPanic(func() {
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result = value.construct(rt, this, argumentList...)
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})
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return result, err
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}
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func (value Value) construct(rt *_runtime, this Value, argumentList ...interface{}) Value {
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if fn, ok := value.value.(*_object); ok {
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return fn.construct(fn.runtime.toValueArray(argumentList...))
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}
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if rt == nil {
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panic("FIXME TypeError")
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}
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panic(rt.panicTypeError())
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}
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// IsPrimitive will return true if value is a primitive (any kind of primitive).
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func (value Value) IsPrimitive() bool {
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return !value.IsObject()
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}
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// IsBoolean will return true if value is a boolean (primitive).
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func (value Value) IsBoolean() bool {
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return value.kind == valueBoolean
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}
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// IsNumber will return true if value is a number (primitive).
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func (value Value) IsNumber() bool {
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return value.kind == valueNumber
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}
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// IsNaN will return true if value is NaN (or would convert to NaN).
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func (value Value) IsNaN() bool {
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switch value := value.value.(type) {
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case float64:
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return math.IsNaN(value)
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case float32:
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return math.IsNaN(float64(value))
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case int, int8, int32, int64:
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return false
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case uint, uint8, uint32, uint64:
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return false
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}
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return math.IsNaN(value.float64())
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}
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// IsString will return true if value is a string (primitive).
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func (value Value) IsString() bool {
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return value.kind == valueString
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}
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// IsObject will return true if value is an object.
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func (value Value) IsObject() bool {
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return value.kind == valueObject
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}
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// IsFunction will return true if value is a function.
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func (value Value) IsFunction() bool {
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if value.kind != valueObject {
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return false
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}
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return value.value.(*_object).class == classFunction
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}
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// Class will return the class string of the value or the empty string if value is not an object.
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//
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// The return value will (generally) be one of:
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//
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// Object
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// Function
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// Array
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// String
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// Number
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// Boolean
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// Date
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// RegExp
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func (value Value) Class() string {
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if value.kind != valueObject {
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return ""
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}
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return value.value.(*_object).class
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}
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func (value Value) isArray() bool {
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if value.kind != valueObject {
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return false
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}
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return isArray(value.value.(*_object))
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}
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func (value Value) isStringObject() bool {
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if value.kind != valueObject {
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return false
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}
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return value.value.(*_object).class == classString
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}
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func (value Value) isBooleanObject() bool {
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if value.kind != valueObject {
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return false
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}
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return value.value.(*_object).class == classBoolean
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}
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func (value Value) isNumberObject() bool {
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if value.kind != valueObject {
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return false
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}
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return value.value.(*_object).class == classNumber
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}
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func (value Value) isDate() bool {
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if value.kind != valueObject {
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return false
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}
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return value.value.(*_object).class == classDate
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}
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func (value Value) isRegExp() bool {
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if value.kind != valueObject {
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return false
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}
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return value.value.(*_object).class == classRegExp
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}
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func (value Value) isError() bool {
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if value.kind != valueObject {
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return false
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}
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return value.value.(*_object).class == classError
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}
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// ---
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func toValue_reflectValuePanic(value interface{}, kind reflect.Kind) {
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// FIXME?
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switch kind {
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case reflect.Struct:
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panic(newError(nil, "TypeError", 0, "invalid value (struct): missing runtime: %v (%T)", value, value))
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case reflect.Map:
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panic(newError(nil, "TypeError", 0, "invalid value (map): missing runtime: %v (%T)", value, value))
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case reflect.Slice:
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panic(newError(nil, "TypeError", 0, "invalid value (slice): missing runtime: %v (%T)", value, value))
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}
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}
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func toValue(value interface{}) Value {
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switch value := value.(type) {
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case Value:
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return value
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case bool:
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return Value{valueBoolean, value}
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case int:
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return Value{valueNumber, value}
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case int8:
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return Value{valueNumber, value}
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case int16:
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return Value{valueNumber, value}
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case int32:
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return Value{valueNumber, value}
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case int64:
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return Value{valueNumber, value}
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case uint:
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return Value{valueNumber, value}
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case uint8:
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return Value{valueNumber, value}
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case uint16:
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return Value{valueNumber, value}
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case uint32:
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return Value{valueNumber, value}
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case uint64:
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return Value{valueNumber, value}
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case float32:
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return Value{valueNumber, float64(value)}
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case float64:
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return Value{valueNumber, value}
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case []uint16:
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return Value{valueString, value}
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case string:
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return Value{valueString, value}
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// A rune is actually an int32, which is handled above
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case *_object:
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return Value{valueObject, value}
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case *Object:
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return Value{valueObject, value.object}
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case Object:
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return Value{valueObject, value.object}
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case _reference: // reference is an interface (already a pointer)
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return Value{valueReference, value}
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case _result:
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return Value{valueResult, value}
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case nil:
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// TODO Ugh.
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return Value{}
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case reflect.Value:
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for value.Kind() == reflect.Ptr {
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// We were given a pointer, so we'll drill down until we get a non-pointer
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//
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// These semantics might change if we want to start supporting pointers to values transparently
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// (It would be best not to depend on this behavior)
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// FIXME: UNDEFINED
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if value.IsNil() {
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return Value{}
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}
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value = value.Elem()
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}
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switch value.Kind() {
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case reflect.Bool:
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return Value{valueBoolean, bool(value.Bool())}
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case reflect.Int:
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return Value{valueNumber, int(value.Int())}
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case reflect.Int8:
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return Value{valueNumber, int8(value.Int())}
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case reflect.Int16:
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return Value{valueNumber, int16(value.Int())}
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case reflect.Int32:
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return Value{valueNumber, int32(value.Int())}
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case reflect.Int64:
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return Value{valueNumber, int64(value.Int())}
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case reflect.Uint:
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return Value{valueNumber, uint(value.Uint())}
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case reflect.Uint8:
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return Value{valueNumber, uint8(value.Uint())}
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case reflect.Uint16:
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return Value{valueNumber, uint16(value.Uint())}
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case reflect.Uint32:
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return Value{valueNumber, uint32(value.Uint())}
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case reflect.Uint64:
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return Value{valueNumber, uint64(value.Uint())}
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case reflect.Float32:
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return Value{valueNumber, float32(value.Float())}
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case reflect.Float64:
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return Value{valueNumber, float64(value.Float())}
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case reflect.String:
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return Value{valueString, string(value.String())}
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default:
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toValue_reflectValuePanic(value.Interface(), value.Kind())
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}
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default:
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return toValue(reflect.ValueOf(value))
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}
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// FIXME?
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panic(newError(nil, "TypeError", 0, "invalid value: %v (%T)", value, value))
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}
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// String will return the value as a string.
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//
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// This method will make return the empty string if there is an error.
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func (value Value) String() string {
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result := ""
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catchPanic(func() {
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result = value.string()
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})
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return result
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}
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// ToBoolean will convert the value to a boolean (bool).
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//
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// ToValue(0).ToBoolean() => false
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// ToValue("").ToBoolean() => false
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// ToValue(true).ToBoolean() => true
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// ToValue(1).ToBoolean() => true
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// ToValue("Nothing happens").ToBoolean() => true
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//
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// If there is an error during the conversion process (like an uncaught exception), then the result will be false and an error.
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func (value Value) ToBoolean() (bool, error) {
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result := false
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err := catchPanic(func() {
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result = value.bool()
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})
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return result, err
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}
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func (value Value) numberValue() Value {
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if value.kind == valueNumber {
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return value
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}
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return Value{valueNumber, value.float64()}
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}
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// ToFloat will convert the value to a number (float64).
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//
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// ToValue(0).ToFloat() => 0.
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// ToValue(1.1).ToFloat() => 1.1
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// ToValue("11").ToFloat() => 11.
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//
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// If there is an error during the conversion process (like an uncaught exception), then the result will be 0 and an error.
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func (value Value) ToFloat() (float64, error) {
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result := float64(0)
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err := catchPanic(func() {
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result = value.float64()
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})
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return result, err
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}
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// ToInteger will convert the value to a number (int64).
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//
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// ToValue(0).ToInteger() => 0
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// ToValue(1.1).ToInteger() => 1
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// ToValue("11").ToInteger() => 11
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//
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// If there is an error during the conversion process (like an uncaught exception), then the result will be 0 and an error.
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func (value Value) ToInteger() (int64, error) {
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result := int64(0)
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err := catchPanic(func() {
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result = value.number().int64
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})
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return result, err
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}
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// ToString will convert the value to a string (string).
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//
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// ToValue(0).ToString() => "0"
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// ToValue(false).ToString() => "false"
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// ToValue(1.1).ToString() => "1.1"
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// ToValue("11").ToString() => "11"
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// ToValue('Nothing happens.').ToString() => "Nothing happens."
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//
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// If there is an error during the conversion process (like an uncaught exception), then the result will be the empty string ("") and an error.
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func (value Value) ToString() (string, error) {
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result := ""
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err := catchPanic(func() {
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result = value.string()
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})
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return result, err
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}
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|
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func (value Value) _object() *_object {
|
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if v, ok := value.value.(*_object); ok {
|
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return v
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}
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return nil
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}
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|
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// Object will return the object of the value, or nil if value is not an object.
|
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//
|
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// This method will not do any implicit conversion. For example, calling this method on a string primitive value will not return a String object.
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func (value Value) Object() *Object {
|
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if object, ok := value.value.(*_object); ok {
|
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return _newObject(object, value)
|
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}
|
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return nil
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}
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|
|
func (value Value) reference() _reference {
|
|
if value, ok := value.value.(_reference); ok {
|
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return value
|
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}
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return nil
|
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}
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|
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func (value Value) resolve() Value {
|
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if value, ok := value.value.(_reference); ok {
|
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return value.getValue()
|
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}
|
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return value
|
|
}
|
|
|
|
var (
|
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__NaN__ float64 = math.NaN()
|
|
__PositiveInfinity__ float64 = math.Inf(+1)
|
|
__NegativeInfinity__ float64 = math.Inf(-1)
|
|
__PositiveZero__ float64 = 0
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__NegativeZero__ float64 = math.Float64frombits(0 | (1 << 63))
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)
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|
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func positiveZero() float64 {
|
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return __PositiveZero__
|
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}
|
|
|
|
func negativeZero() float64 {
|
|
return __NegativeZero__
|
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}
|
|
|
|
// NaNValue will return a value representing NaN.
|
|
//
|
|
// It is equivalent to:
|
|
//
|
|
// ToValue(math.NaN())
|
|
func NaNValue() Value {
|
|
return Value{valueNumber, __NaN__}
|
|
}
|
|
|
|
func positiveInfinityValue() Value {
|
|
return Value{valueNumber, __PositiveInfinity__}
|
|
}
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|
|
|
func negativeInfinityValue() Value {
|
|
return Value{valueNumber, __NegativeInfinity__}
|
|
}
|
|
|
|
func positiveZeroValue() Value {
|
|
return Value{valueNumber, __PositiveZero__}
|
|
}
|
|
|
|
func negativeZeroValue() Value {
|
|
return Value{valueNumber, __NegativeZero__}
|
|
}
|
|
|
|
// TrueValue will return a value representing true.
|
|
//
|
|
// It is equivalent to:
|
|
//
|
|
// ToValue(true)
|
|
func TrueValue() Value {
|
|
return Value{valueBoolean, true}
|
|
}
|
|
|
|
// FalseValue will return a value representing false.
|
|
//
|
|
// It is equivalent to:
|
|
//
|
|
// ToValue(false)
|
|
func FalseValue() Value {
|
|
return Value{valueBoolean, false}
|
|
}
|
|
|
|
func sameValue(x Value, y Value) bool {
|
|
if x.kind != y.kind {
|
|
return false
|
|
}
|
|
|
|
switch x.kind {
|
|
case valueUndefined, valueNull:
|
|
return true
|
|
case valueNumber:
|
|
x := x.float64()
|
|
y := y.float64()
|
|
if math.IsNaN(x) && math.IsNaN(y) {
|
|
return true
|
|
}
|
|
|
|
if x == y {
|
|
if x == 0 {
|
|
// Since +0 != -0
|
|
return math.Signbit(x) == math.Signbit(y)
|
|
}
|
|
return true
|
|
}
|
|
return false
|
|
case valueString:
|
|
return x.string() == y.string()
|
|
case valueBoolean:
|
|
return x.bool() == y.bool()
|
|
case valueObject:
|
|
return x._object() == y._object()
|
|
default:
|
|
panic(hereBeDragons())
|
|
}
|
|
}
|
|
|
|
func strictEqualityComparison(x Value, y Value) bool {
|
|
if x.kind != y.kind {
|
|
return false
|
|
}
|
|
|
|
switch x.kind {
|
|
case valueUndefined, valueNull:
|
|
return true
|
|
case valueNumber:
|
|
x := x.float64()
|
|
y := y.float64()
|
|
if math.IsNaN(x) && math.IsNaN(y) {
|
|
return false
|
|
}
|
|
return x == y
|
|
case valueString:
|
|
return x.string() == y.string()
|
|
case valueBoolean:
|
|
return x.bool() == y.bool()
|
|
case valueObject:
|
|
return x._object() == y._object()
|
|
default:
|
|
panic(hereBeDragons())
|
|
}
|
|
}
|
|
|
|
// Export will attempt to convert the value to a Go representation
|
|
// and return it via an interface{} kind.
|
|
//
|
|
// Export returns an error, but it will always be nil. It is present
|
|
// for backwards compatibility.
|
|
//
|
|
// If a reasonable conversion is not possible, then the original
|
|
// value is returned.
|
|
//
|
|
// undefined -> nil (FIXME?: Should be Value{})
|
|
// null -> nil
|
|
// boolean -> bool
|
|
// number -> A number type (int, float32, uint64, ...)
|
|
// string -> string
|
|
// Array -> []interface{}
|
|
// Object -> map[string]interface{}
|
|
func (self Value) Export() (interface{}, error) {
|
|
return self.export(), nil
|
|
}
|
|
|
|
func (self Value) export() interface{} {
|
|
|
|
switch self.kind {
|
|
case valueUndefined:
|
|
return nil
|
|
case valueNull:
|
|
return nil
|
|
case valueNumber, valueBoolean:
|
|
return self.value
|
|
case valueString:
|
|
switch value := self.value.(type) {
|
|
case string:
|
|
return value
|
|
case []uint16:
|
|
return string(utf16.Decode(value))
|
|
}
|
|
case valueObject:
|
|
object := self._object()
|
|
switch value := object.value.(type) {
|
|
case *_goStructObject:
|
|
return value.value.Interface()
|
|
case *_goMapObject:
|
|
return value.value.Interface()
|
|
case *_goArrayObject:
|
|
return value.value.Interface()
|
|
case *_goSliceObject:
|
|
return value.value.Interface()
|
|
}
|
|
if object.class == classArray {
|
|
result := make([]interface{}, 0)
|
|
lengthValue := object.get(propertyLength)
|
|
length := lengthValue.value.(uint32)
|
|
kind := reflect.Invalid
|
|
keyKind := reflect.Invalid
|
|
elemKind := reflect.Invalid
|
|
state := 0
|
|
var t reflect.Type
|
|
for index := uint32(0); index < length; index += 1 {
|
|
name := strconv.FormatInt(int64(index), 10)
|
|
if !object.hasProperty(name) {
|
|
continue
|
|
}
|
|
value := object.get(name).export()
|
|
|
|
t = reflect.TypeOf(value)
|
|
|
|
var k, kk, ek reflect.Kind
|
|
if t != nil {
|
|
k = t.Kind()
|
|
switch k {
|
|
case reflect.Map:
|
|
kk = t.Key().Kind()
|
|
fallthrough
|
|
case reflect.Array, reflect.Chan, reflect.Ptr, reflect.Slice:
|
|
ek = t.Elem().Kind()
|
|
}
|
|
}
|
|
|
|
if state == 0 {
|
|
kind = k
|
|
keyKind = kk
|
|
elemKind = ek
|
|
state = 1
|
|
} else if state == 1 && (kind != k || keyKind != kk || elemKind != ek) {
|
|
state = 2
|
|
}
|
|
|
|
result = append(result, value)
|
|
}
|
|
|
|
if state != 1 || kind == reflect.Interface || t == nil {
|
|
// No common type
|
|
return result
|
|
}
|
|
|
|
// Convert to the common type
|
|
val := reflect.MakeSlice(reflect.SliceOf(t), len(result), len(result))
|
|
for i, v := range result {
|
|
val.Index(i).Set(reflect.ValueOf(v))
|
|
}
|
|
return val.Interface()
|
|
} else {
|
|
result := make(map[string]interface{})
|
|
// TODO Should we export everything? Or just what is enumerable?
|
|
object.enumerate(false, func(name string) bool {
|
|
value := object.get(name)
|
|
if value.IsDefined() {
|
|
result[name] = value.export()
|
|
}
|
|
return true
|
|
})
|
|
return result
|
|
}
|
|
}
|
|
|
|
if self.safe() {
|
|
return self
|
|
}
|
|
|
|
return Value{}
|
|
}
|
|
|
|
func (self Value) evaluateBreakContinue(labels []string) _resultKind {
|
|
result := self.value.(_result)
|
|
if result.kind == resultBreak || result.kind == resultContinue {
|
|
for _, label := range labels {
|
|
if label == result.target {
|
|
return result.kind
|
|
}
|
|
}
|
|
}
|
|
return resultReturn
|
|
}
|
|
|
|
func (self Value) evaluateBreak(labels []string) _resultKind {
|
|
result := self.value.(_result)
|
|
if result.kind == resultBreak {
|
|
for _, label := range labels {
|
|
if label == result.target {
|
|
return result.kind
|
|
}
|
|
}
|
|
}
|
|
return resultReturn
|
|
}
|
|
|
|
func (self Value) exportNative() interface{} {
|
|
|
|
switch self.kind {
|
|
case valueUndefined:
|
|
return self
|
|
case valueNull:
|
|
return nil
|
|
case valueNumber, valueBoolean:
|
|
return self.value
|
|
case valueString:
|
|
switch value := self.value.(type) {
|
|
case string:
|
|
return value
|
|
case []uint16:
|
|
return string(utf16.Decode(value))
|
|
}
|
|
case valueObject:
|
|
object := self._object()
|
|
switch value := object.value.(type) {
|
|
case *_goStructObject:
|
|
return value.value.Interface()
|
|
case *_goMapObject:
|
|
return value.value.Interface()
|
|
case *_goArrayObject:
|
|
return value.value.Interface()
|
|
case *_goSliceObject:
|
|
return value.value.Interface()
|
|
}
|
|
}
|
|
|
|
return self
|
|
}
|
|
|
|
// Make a best effort to return a reflect.Value corresponding to reflect.Kind, but
|
|
// fallback to just returning the Go value we have handy.
|
|
func (value Value) toReflectValue(kind reflect.Kind) (reflect.Value, error) {
|
|
if kind != reflect.Float32 && kind != reflect.Float64 && kind != reflect.Interface {
|
|
switch value := value.value.(type) {
|
|
case float32:
|
|
_, frac := math.Modf(float64(value))
|
|
if frac > 0 {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %v to reflect.Kind: %v", value, kind)
|
|
}
|
|
case float64:
|
|
_, frac := math.Modf(value)
|
|
if frac > 0 {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %v to reflect.Kind: %v", value, kind)
|
|
}
|
|
}
|
|
}
|
|
|
|
switch kind {
|
|
case reflect.Bool: // Bool
|
|
return reflect.ValueOf(value.bool()), nil
|
|
case reflect.Int: // Int
|
|
// We convert to float64 here because converting to int64 will not tell us
|
|
// if a value is outside the range of int64
|
|
tmp := toIntegerFloat(value)
|
|
if tmp < float_minInt || tmp > float_maxInt {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %f (%v) to int", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(int(tmp)), nil
|
|
}
|
|
case reflect.Int8: // Int8
|
|
tmp := value.number().int64
|
|
if tmp < int64_minInt8 || tmp > int64_maxInt8 {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %d (%v) to int8", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(int8(tmp)), nil
|
|
}
|
|
case reflect.Int16: // Int16
|
|
tmp := value.number().int64
|
|
if tmp < int64_minInt16 || tmp > int64_maxInt16 {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %d (%v) to int16", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(int16(tmp)), nil
|
|
}
|
|
case reflect.Int32: // Int32
|
|
tmp := value.number().int64
|
|
if tmp < int64_minInt32 || tmp > int64_maxInt32 {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %d (%v) to int32", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(int32(tmp)), nil
|
|
}
|
|
case reflect.Int64: // Int64
|
|
// We convert to float64 here because converting to int64 will not tell us
|
|
// if a value is outside the range of int64
|
|
tmp := toIntegerFloat(value)
|
|
if tmp < float_minInt64 || tmp > float_maxInt64 {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %f (%v) to int", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(int64(tmp)), nil
|
|
}
|
|
case reflect.Uint: // Uint
|
|
// We convert to float64 here because converting to int64 will not tell us
|
|
// if a value is outside the range of uint
|
|
tmp := toIntegerFloat(value)
|
|
if tmp < 0 || tmp > float_maxUint {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %f (%v) to uint", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(uint(tmp)), nil
|
|
}
|
|
case reflect.Uint8: // Uint8
|
|
tmp := value.number().int64
|
|
if tmp < 0 || tmp > int64_maxUint8 {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %d (%v) to uint8", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(uint8(tmp)), nil
|
|
}
|
|
case reflect.Uint16: // Uint16
|
|
tmp := value.number().int64
|
|
if tmp < 0 || tmp > int64_maxUint16 {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %d (%v) to uint16", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(uint16(tmp)), nil
|
|
}
|
|
case reflect.Uint32: // Uint32
|
|
tmp := value.number().int64
|
|
if tmp < 0 || tmp > int64_maxUint32 {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %d (%v) to uint32", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(uint32(tmp)), nil
|
|
}
|
|
case reflect.Uint64: // Uint64
|
|
// We convert to float64 here because converting to int64 will not tell us
|
|
// if a value is outside the range of uint64
|
|
tmp := toIntegerFloat(value)
|
|
if tmp < 0 || tmp > float_maxUint64 {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %f (%v) to uint64", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(uint64(tmp)), nil
|
|
}
|
|
case reflect.Float32: // Float32
|
|
tmp := value.float64()
|
|
tmp1 := tmp
|
|
if 0 > tmp1 {
|
|
tmp1 = -tmp1
|
|
}
|
|
if tmp1 > 0 && (tmp1 < math.SmallestNonzeroFloat32 || tmp1 > math.MaxFloat32) {
|
|
return reflect.Value{}, fmt.Errorf("RangeError: %f (%v) to float32", tmp, value)
|
|
} else {
|
|
return reflect.ValueOf(float32(tmp)), nil
|
|
}
|
|
case reflect.Float64: // Float64
|
|
value := value.float64()
|
|
return reflect.ValueOf(float64(value)), nil
|
|
case reflect.String: // String
|
|
return reflect.ValueOf(value.string()), nil
|
|
case reflect.Invalid: // Invalid
|
|
case reflect.Complex64: // FIXME? Complex64
|
|
case reflect.Complex128: // FIXME? Complex128
|
|
case reflect.Chan: // FIXME? Chan
|
|
case reflect.Func: // FIXME? Func
|
|
case reflect.Ptr: // FIXME? Ptr
|
|
case reflect.UnsafePointer: // FIXME? UnsafePointer
|
|
default:
|
|
switch value.kind {
|
|
case valueObject:
|
|
object := value._object()
|
|
switch vl := object.value.(type) {
|
|
case *_goStructObject: // Struct
|
|
return reflect.ValueOf(vl.value.Interface()), nil
|
|
case *_goMapObject: // Map
|
|
return reflect.ValueOf(vl.value.Interface()), nil
|
|
case *_goArrayObject: // Array
|
|
return reflect.ValueOf(vl.value.Interface()), nil
|
|
case *_goSliceObject: // Slice
|
|
return reflect.ValueOf(vl.value.Interface()), nil
|
|
}
|
|
return reflect.ValueOf(value.exportNative()), nil
|
|
case valueEmpty, valueResult, valueReference:
|
|
// These are invalid, and should panic
|
|
default:
|
|
return reflect.ValueOf(value.value), nil
|
|
}
|
|
}
|
|
|
|
// FIXME Should this end up as a TypeError?
|
|
panic(fmt.Errorf("invalid conversion of %v (%v) to reflect.Kind: %v", value.kind, value, kind))
|
|
}
|
|
|
|
func stringToReflectValue(value string, kind reflect.Kind) (reflect.Value, error) {
|
|
switch kind {
|
|
case reflect.Bool:
|
|
value, err := strconv.ParseBool(value)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(value), nil
|
|
case reflect.Int:
|
|
value, err := strconv.ParseInt(value, 0, 0)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(int(value)), nil
|
|
case reflect.Int8:
|
|
value, err := strconv.ParseInt(value, 0, 8)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(int8(value)), nil
|
|
case reflect.Int16:
|
|
value, err := strconv.ParseInt(value, 0, 16)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(int16(value)), nil
|
|
case reflect.Int32:
|
|
value, err := strconv.ParseInt(value, 0, 32)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(int32(value)), nil
|
|
case reflect.Int64:
|
|
value, err := strconv.ParseInt(value, 0, 64)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(int64(value)), nil
|
|
case reflect.Uint:
|
|
value, err := strconv.ParseUint(value, 0, 0)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(uint(value)), nil
|
|
case reflect.Uint8:
|
|
value, err := strconv.ParseUint(value, 0, 8)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(uint8(value)), nil
|
|
case reflect.Uint16:
|
|
value, err := strconv.ParseUint(value, 0, 16)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(uint16(value)), nil
|
|
case reflect.Uint32:
|
|
value, err := strconv.ParseUint(value, 0, 32)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(uint32(value)), nil
|
|
case reflect.Uint64:
|
|
value, err := strconv.ParseUint(value, 0, 64)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(uint64(value)), nil
|
|
case reflect.Float32:
|
|
value, err := strconv.ParseFloat(value, 32)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(float32(value)), nil
|
|
case reflect.Float64:
|
|
value, err := strconv.ParseFloat(value, 64)
|
|
if err != nil {
|
|
return reflect.Value{}, err
|
|
}
|
|
return reflect.ValueOf(float64(value)), nil
|
|
case reflect.String:
|
|
return reflect.ValueOf(value), nil
|
|
}
|
|
|
|
// FIXME This should end up as a TypeError?
|
|
panic(fmt.Errorf("invalid conversion of %q to reflect.Kind: %v", value, kind))
|
|
}
|
|
|
|
func (self Value) MarshalJSON() ([]byte, error) {
|
|
switch self.kind {
|
|
case valueUndefined, valueNull:
|
|
return []byte("null"), nil
|
|
case valueBoolean, valueNumber:
|
|
return json.Marshal(self.value)
|
|
case valueString:
|
|
return json.Marshal(self.string())
|
|
case valueObject:
|
|
return self.Object().MarshalJSON()
|
|
}
|
|
return nil, fmt.Errorf("invalid type %v", self.kind)
|
|
}
|