namespace KJS

Public Types

• class UString
• class Global
• class KJSO
• class Object
• class Imp
• class List
• enum Type { AbstractType = 1, UndefinedType, NullType, BooleanType, NumberType, StringType, ObjectType, HostType, ReferenceType, CompletionType, FunctionType, InternalFunctionType, DeclaredFunctionType, AnonymousFunctionType, ConstructorType, ActivationType }
• enum Attribute { None = 0, ReadOnly = 1 << 1, DontEnum = 1 << 2, DontDelete = 1 << 3, Internal = 1 << 4 }
• enum Class { UndefClass, ArrayClass, StringClass, BooleanClass, NumberClass, ObjectClass, DateClass, RegExpClass, ErrorClass, FunctionClass }
• enum Compl { Normal, Break, Continue, ReturnValue, Throw }
• enum ErrorType { NoError = 0, GeneralError, EvalError, RangeError, ReferenceError, SyntaxError, TypeError, URIError }
• class Boolean
• class Number
• class String
• struct TypeInfo
• class ObjectImp
• class HostImp
• class Error
• class Undefined
• class Null
• class Completion
• class ListIterator
• class ListNode
• enum CodeType { GlobalCode, EvalCode, FunctionCode, AnonymousCode, HostCode }
• enum FunctionAttribute { ImplicitNone, ImplicitThis, ImplicitParents }
• class Function
• class FunctionImp
• class InternalFunctionImp
• class ConstructorImp
• class Constructor
• class UCharReference
• struct UChar
• class CString

Public Methods

• bool  isNaN (double d)
• bool  isInf (double d)
• bool  equal (const KJSO& v1, const KJSO& v2)
• bool  strictEqual (const KJSO &v1, const KJSO &v2)
• int  relation (const KJSO& v1, const KJSO& v2)
• double  max (double d1, double d2)
• double  min (double d1, double d2)
• KJSO  add (const KJSO &v1, const KJSO &v2, char oper)
• KJSO  mult (const KJSO &v1, const KJSO &v2, char oper)
• bool  operator== (const UChar &c1, const UChar &c2)
• bool  operator== (const UString& s1, const UString& s2)
• inline bool  operator!= (const UString& s1, const UString& s2)
• bool  operator< (const UString& s1, const UString& s2)
• bool  operator== (const UString& s1, const char *s2)
• inline bool  operator!= (const UString& s1, const char *s2)
• bool  operator== (const char *s1, const UString& s2)
• inline bool  operator!= (const char *s1, const UString& s2)
• bool  operator== (const CString& s1, const CString& s2)
• UString  operator+ (const UString& s1, const UString& s2)

Public Members

• Forward Lexer
• Forward Context
• Forward KJScriptImp
• Forward Debugger
• extern const double NaN
• extern const double Inf
• Forward Property
• Forward PropList
• Forward BooleanImp
• Forward NumberImp
• Forward StringImp
• Forward Parameter

Detailed Description

The Global object represents the global namespace. It holds the native objects like String and functions like eval().

It also serves as a container for variables created by the user, i.e. the statement

   var i = 2;

will basically perform a Global::current().put("i", Number(2)); operation.

List is a native ECMAScript type. List values are only used for intermediate results of expression evaluation and cannot be stored as properties of objects.

The list is explicitly shared. Note that while copy() returns a deep copy of the list the referenced objects are still shared.

Types of classes derived from KJSO

Property attributes.

Types of classes derived from Object.

Completion types.

Error codes.

Number is a handle for a number value. KJSO::toPrimitive(), KJSO::toBoolean(), KJSO::toNumber(), KJSO::toString() and KJSO::toString() are re-implemented internally according to the specification.

Example usage:

 Number a(2), b(3.0), c; // c defaults to 0.0

 c = a.value() * b.value(); // c will be 6.0 now

 String s = c.toString(); // s holds "6"

Note the following implementation detail: Internally, the value is stored as a double and will be casted from and to other types when needed. This won't be noticable within a certain range of values but might produce unpredictable results when crossing these limits. In case this turns out to be a real problem for an application we might have to extend this class to behave more intelligently.

Completion objects are used to convey the return status and value from functions.

See FunctionImp::execute()

See also: FunctionImp

Returns: True if d is not a number (platform support required).

Returns: True if d is infinite (platform support required).

This operator performs an abstract relational comparision of the two arguments that can be of arbitrary type. If possible, conversions to the string or number type will take place before the comparison.

Returns: 1 if v1 is "less-than" v2, 0 if the relation is "greater-than-or- equal". -1 if the result is undefined.

Additive operator. Either performs an addition or substraction of v1 and v2.

Parameters:

oper	'+' or '-' for an addition or substraction, respectively.

Returns: The result of the operation.

Multiplicative operator. Either multiplies/divides v1 and v2 or calculates the remainder from an division.

Parameters:

oper	'*', '/' or '%' for a multiplication, division or modulo operation.

Returns: The result of the operation.

UCharReference is the dynamic counterpart of UChar. It's used when characters retrieved via index from a UString are used in an assignment expression (and therefore can't be treated as being const):

 UString s("hello world");
 s[0] = 'H';

If that sounds confusing your best bet is to simply forget about the existance of this class and treat is as being identical to UChar.

UChar represents a 16 bit Unicode character. It's internal data representation is compatible to XChar2b and QChar. It's therefore possible to exchange data with X and Qt with shallow copies.