C# Class Jurassic.TypeUtilities

Contains type-related functionality that isn't conversion or comparison.

显示文件 Open project: paulbartrum/jurassic Class Usage Examples

Public Methods

Method	Description
Add ( object left, object right ) : object	Adds two objects together, as if by the javascript addition operator.
EnumeratePropertyNames ( ScriptEngine engine, object obj ) : IEnumerable	Enumerates the names of the enumerable properties on the given object, including properties defined on the object's prototype. Used by the for-in statement.
GetIterator ( ScriptEngine engine, ObjectInstance iterable ) : ObjectInstance	Converts an iteratable object into a iterator by looking up the @@iterator property, then calling that value as a function.
IsNegativeZero ( double value ) : bool	Determines if the given number is negative zero.
IsPositiveZero ( double value ) : bool	Determines if the given number is positive zero.
IsPrimitive ( object value ) : bool	Determines if the given value is a supported JavaScript primitive.
IsPrimitiveOrObject ( object value ) : bool	Determines if the given value is a supported JavaScript primitive or derives from ObjectInstance.
IsRegularExpression ( object value ) : bool	Determines if the given value is a regular expression.
Iterate ( ScriptEngine engine, ObjectInstance iterator ) : IEnumerable	Iterate over the values in an iterator.
TypeOf ( object obj ) : string	Gets the type name for the given object. Used by the typeof operator.
VerifyThisObject ( ScriptEngine engine, object value, string functionName ) : void	Throws a TypeError when the given value is `null` or `undefined.`

Private Methods

Method	Description
IsNumeric ( object obj ) : bool	Returns `true` if the given value is a supported numeric type.
IsString ( object obj ) : bool	Returns `true` if the given value is a supported string type.
IsUndefined ( object obj ) : bool	Returns `true` if the given value is undefined.
NormalizeValue ( object obj ) : object	Converts the given value into a standard .NET type, suitable for returning from an API.
SliceArray ( object args, int offset ) : object[]	Utility method for create a slice of an array.

Method Details

Add() public static method

Adds two objects together, as if by the javascript addition operator.

public static Add ( object left, object right ) : object
left	object	The left hand side operand.
right	object	The right hand side operand.
return	object

EnumeratePropertyNames() public static method

Enumerates the names of the enumerable properties on the given object, including properties defined on the object's prototype. Used by the for-in statement.

public static EnumeratePropertyNames ( ScriptEngine engine, object obj ) : IEnumerable
engine	ScriptEngine	The script engine used to convert the given value to an object.
obj	object	The object to enumerate.
return	IEnumerable

GetIterator() public static method

Converts an iteratable object into a iterator by looking up the @@iterator property, then calling that value as a function.

public static GetIterator ( ScriptEngine engine, ObjectInstance iterable ) : ObjectInstance
engine	ScriptEngine	The script engine.
iterable	Jurassic.Library.ObjectInstance	The object to get a iterator from.
return	Jurassic.Library.ObjectInstance

IsNegativeZero() public static method

Determines if the given number is negative zero.

public static IsNegativeZero ( double value ) : bool
value	double	The value to test.
return	bool

IsPositiveZero() public static method

Determines if the given number is positive zero.

public static IsPositiveZero ( double value ) : bool
value	double	The value to test.
return	bool

IsPrimitive() public static method

Determines if the given value is a supported JavaScript primitive.

public static IsPrimitive ( object value ) : bool
value	object	The value to test.
return	bool

IsPrimitiveOrObject() public static method

Determines if the given value is a supported JavaScript primitive or derives from ObjectInstance.

public static IsPrimitiveOrObject ( object value ) : bool
value	object	The value to test.
return	bool

IsRegularExpression() public static method

Determines if the given value is a regular expression.

public static IsRegularExpression ( object value ) : bool
value	object	The value to test.
return	bool

Iterate() public static method

Iterate over the values in an iterator.

public static Iterate ( ScriptEngine engine, ObjectInstance iterator ) : IEnumerable
engine	ScriptEngine	The script engine.
iterator	Jurassic.Library.ObjectInstance	The iterator object. Must contain a next function.
return	IEnumerable

TypeOf() public static method

Gets the type name for the given object. Used by the typeof operator.

public static TypeOf ( object obj ) : string
obj	object	The object to get the type name for.
return	string

VerifyThisObject() public static method

Throws a TypeError when the given value is null or undefined.

public static VerifyThisObject ( ScriptEngine engine, object value, string functionName ) : void
engine	ScriptEngine	The associated script engine.
value	object	The value to check.
functionName	string	The name of the function which is doing the check.
return	void