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package goja
import (
"io"
"strconv"
"unicode/utf16"
"unicode/utf8"
)
var (
stringTrue valueString = asciiString("true")
stringFalse valueString = asciiString("false")
stringNull valueString = asciiString("null")
stringUndefined valueString = asciiString("undefined")
stringObjectC valueString = asciiString("object")
stringFunction valueString = asciiString("function")
stringBoolean valueString = asciiString("boolean")
stringString valueString = asciiString("string")
stringNumber valueString = asciiString("number")
stringNaN valueString = asciiString("NaN")
stringInfinity = asciiString("Infinity")
stringPlusInfinity = asciiString("+Infinity")
stringNegInfinity = asciiString("-Infinity")
stringEmpty valueString = asciiString("")
string__proto__ valueString = asciiString("__proto__")
stringError valueString = asciiString("Error")
stringTypeError valueString = asciiString("TypeError")
stringReferenceError valueString = asciiString("ReferenceError")
stringSyntaxError valueString = asciiString("SyntaxError")
stringRangeError valueString = asciiString("RangeError")
stringEvalError valueString = asciiString("EvalError")
stringURIError valueString = asciiString("URIError")
stringGoError valueString = asciiString("GoError")
stringObjectNull valueString = asciiString("[object Null]")
stringObjectObject valueString = asciiString("[object Object]")
stringObjectUndefined valueString = asciiString("[object Undefined]")
stringGlobalObject valueString = asciiString("Global Object")
stringInvalidDate valueString = asciiString("Invalid Date")
)
type valueString interface {
Value
charAt(int64) rune
length() int64
concat(valueString) valueString
substring(start, end int64) valueString
compareTo(valueString) int
reader(start int) io.RuneReader
index(valueString, int64) int64
lastIndex(valueString, int64) int64
toLower() valueString
toUpper() valueString
toTrimmedUTF8() string
}
type stringObject struct {
baseObject
value valueString
length int64
lengthProp valueProperty
}
func newUnicodeString(s string) valueString {
return unicodeString(utf16.Encode([]rune(s)))
}
func newStringValue(s string) valueString {
for _, chr := range s {
if chr >= utf8.RuneSelf {
return newUnicodeString(s)
}
}
return asciiString(s)
}
func (s *stringObject) init() {
s.baseObject.init()
s.setLength()
}
func (s *stringObject) setLength() {
if s.value != nil {
s.length = s.value.length()
}
s.lengthProp.value = intToValue(s.length)
s._put("length", &s.lengthProp)
}
func (s *stringObject) get(n Value) Value {
if idx := toIdx(n); idx >= 0 && idx < s.length {
return s.getIdx(idx)
}
return s.baseObject.get(n)
}
func (s *stringObject) getStr(name string) Value {
if i := strToIdx(name); i >= 0 && i < s.length {
return s.getIdx(i)
}
return s.baseObject.getStr(name)
}
func (s *stringObject) getPropStr(name string) Value {
if i := strToIdx(name); i >= 0 && i < s.length {
return s.getIdx(i)
}
return s.baseObject.getPropStr(name)
}
func (s *stringObject) getProp(n Value) Value {
if i := toIdx(n); i >= 0 && i < s.length {
return s.getIdx(i)
}
return s.baseObject.getProp(n)
}
func (s *stringObject) getOwnProp(name string) Value {
if i := strToIdx(name); i >= 0 && i < s.length {
val := s.getIdx(i)
return &valueProperty{
value: val,
enumerable: true,
}
}
return s.baseObject.getOwnProp(name)
}
func (s *stringObject) getIdx(idx int64) Value {
return s.value.substring(idx, idx+1)
}
func (s *stringObject) put(n Value, val Value, throw bool) {
if i := toIdx(n); i >= 0 && i < s.length {
s.val.runtime.typeErrorResult(throw, "Cannot assign to read only property '%d' of a String", i)
return
}
s.baseObject.put(n, val, throw)
}
func (s *stringObject) putStr(name string, val Value, throw bool) {
if i := strToIdx(name); i >= 0 && i < s.length {
s.val.runtime.typeErrorResult(throw, "Cannot assign to read only property '%d' of a String", i)
return
}
s.baseObject.putStr(name, val, throw)
}
func (s *stringObject) defineOwnProperty(n Value, descr objectImpl, throw bool) bool {
if i := toIdx(n); i >= 0 && i < s.length {
s.val.runtime.typeErrorResult(throw, "Cannot redefine property: %d", i)
return false
}
return s.baseObject.defineOwnProperty(n, descr, throw)
}
type stringPropIter struct {
str valueString // separate, because obj can be the singleton
obj *stringObject
idx, length int64
recursive bool
}
func (i *stringPropIter) next() (propIterItem, iterNextFunc) {
if i.idx < i.length {
name := strconv.FormatInt(i.idx, 10)
i.idx++
return propIterItem{name: name, enumerable: _ENUM_TRUE}, i.next
}
return i.obj.baseObject._enumerate(i.recursive)()
}
func (s *stringObject) _enumerate(recusrive bool) iterNextFunc {
return (&stringPropIter{
str: s.value,
obj: s,
length: s.length,
recursive: recusrive,
}).next
}
func (s *stringObject) enumerate(all, recursive bool) iterNextFunc {
return (&propFilterIter{
wrapped: s._enumerate(recursive),
all: all,
seen: make(map[string]bool),
}).next
}
func (s *stringObject) deleteStr(name string, throw bool) bool {
if i := strToIdx(name); i >= 0 && i < s.length {
s.val.runtime.typeErrorResult(throw, "Cannot delete property '%d' of a String", i)
return false
}
return s.baseObject.deleteStr(name, throw)
}
func (s *stringObject) delete(n Value, throw bool) bool {
if i := toIdx(n); i >= 0 && i < s.length {
s.val.runtime.typeErrorResult(throw, "Cannot delete property '%d' of a String", i)
return false
}
return s.baseObject.delete(n, throw)
}
func (s *stringObject) hasOwnProperty(n Value) bool {
if i := toIdx(n); i >= 0 && i < s.length {
return true
}
return s.baseObject.hasOwnProperty(n)
}
func (s *stringObject) hasOwnPropertyStr(name string) bool {
if i := strToIdx(name); i >= 0 && i < s.length {
return true
}
return s.baseObject.hasOwnPropertyStr(name)
}
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