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Java Source Code / Java Documentation » Scripting » oscript 2.10.4 » oscript.data

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

oscript.data .Value

oscript.data .Type

oscript.data .JavaClassWrapper

oscript.data .BuiltinType

BuiltinType

public class BuiltinType extends JavaClassWrapper (Code)

A BuiltinType instance is used to represent a built-in type. This is similar to JavaClassWrapper, in that it allows a java type to be sub-classed or instantiated, but it's difference is that it restricts access. Because the Value interface has dummy methods for all the possible methods it's subclass may implement, we have to do this to prevent the built-in types from appearing to have methods that they don't have. For example:

 var m = true.bopPlus;

The Value dummy methods throw the appropriate exceptions if you try and use a non-existant method, for example:

 var v = true + false;

To accomodate the possibility of things changing between when an object referencing this object is serialized, and when it is read back from a serial data stream (in a different invokation of the JVM), only the class- name is stored. The other paramters are loaded as via reflection as static fields of the named class:

public static String PARENT_TYPE_NAME; // class-name
public static String TYPE_NAME; // the name of this type
public static String[] MEMBER_NAMES; // names of members of this type

author:
   Rob Clark (rob@ti.com)
author:

version:
   1.38

Method Summary
public Value	bopCast(Value val)
public String	castToString() Convert this object to a native java `String` value.
protected Object	doConstruct(StackFrame sf, MemberTable args, boolean isWrapper) Overloaded, because of how we handle args to the constructor.
protected Value	getTypeMember(Value obj, int id) Overloaded to hide "non-existant" methods.
protected synchronized void	init()
public boolean	isA(Value type) If this object is a type, determine if an instance of this type is an instance of the specified type, ie.
final public static BuiltinType	makeBuiltinType(String className) Get an instance of a built-in type.
protected void	populateMemberSet(Set s, boolean debugger) Derived classes that implement BuiltinType.getMember should also implement this.
protected void	populateTypeMemberSet(Set s, boolean debugger) Derived classes that implement BuiltinType.getTypeMember should also implement this.
Object	readResolve()

Method Detail

bopCast
public Value bopCast(Value val) throws PackagedScriptObjectException(Code)
	Perform the cast operation, `(a)b` is equivalent to `a.bopCast(b)` Parameters: val - the other value the result throws: PackagedScriptObjectException - (NoSuchMemberException)

castToString
public String castToString() throws PackagedScriptObjectException(Code)
	Convert this object to a native java `String` value. a String value throws: PackagedScriptObjectException - (NoSuchMethodException)

doConstruct
protected Object doConstruct(StackFrame sf, MemberTable args, boolean isWrapper)(Code)
	Overloaded, because of how we handle args to the constructor.

getTypeMember
protected Value getTypeMember(Value obj, int id)(Code)
	Overloaded to hide "non-existant" methods. (Ie. methods from Value base class.) Parameters: obj - an object of this type Parameters: id - the id of the symbol that maps to the member a reference to the member, or null

init
protected synchronized void init()(Code)

isA
public boolean isA(Value type)(Code)
	If this object is a type, determine if an instance of this type is an instance of the specified type, ie. if this is `type`, or a subclass. Parameters: type - the type to compare this type to `true` or `false` throws: PackagedScriptObjectException - (NoSuchMemberException)

makeBuiltinType
final public static BuiltinType makeBuiltinType(String className)(Code)
	Get an instance of a built-in type. This method ensures that only a single instance representing a type gets created, regardless of the number of times this is called. This is needed to keep things sane when serialization is going on. Parameters: className - the name of the java class implementing the built-in type.

populateMemberSet
protected void populateMemberSet(Set s, boolean debugger)(Code)
	Derived classes that implement BuiltinType.getMember should also implement this. Parameters: s - the set to populate Parameters: debugger - `true` if being used by debugger, inwhich case both public and private/protected field names should be returned See Also: BuiltinType.getMember

populateTypeMemberSet
protected void populateTypeMemberSet(Set s, boolean debugger)(Code)
	Derived classes that implement BuiltinType.getTypeMember should also implement this. Parameters: s - the set to populate Parameters: debugger - `true` if being used by debugger, inwhich case both public and private/protected field names should be returned See Also: BuiltinType.getTypeMember

readResolve
Object readResolve() throws java.io.ObjectStreamException(Code)
	maintains unique-ness of a JavaClassWrapper when stuff gets serialized or un-serialized

Fields inherited from oscript.data.JavaClassWrapper

final public static String[] MEMBER_NAMES(Code)(Java Doc)
final public static String PARENT_TYPE_NAME(Code)(Java Doc)
final public static Value TYPE(Code)(Java Doc)
final public static String TYPE_NAME(Code)(Java Doc)
protected transient JavaClassWrapperImpl impl(Code)(Java Doc)
protected Class javaClass(Code)(Java Doc)
protected transient JavaClassWrapperImpl wrapperImpl(Code)(Java Doc)

Methods inherited from oscript.data.JavaClassWrapper

Debugger.MemberAccessor _getTypeMemberAccessor(Value obj, Value name)(Code)(Java Doc)
public Value callAsConstructor(StackFrame sf, MemberTable args) throws PackagedScriptObjectException(Code)(Java Doc)
public Value callAsExtends(StackFrame sf, Scope scope, MemberTable args) throws PackagedScriptObjectException(Code)(Java Doc)
public Object castToJavaObject() throws PackagedScriptObjectException(Code)(Java Doc)
public String castToString() throws PackagedScriptObjectException(Code)(Java Doc)
protected Object doConstruct(StackFrame sf, MemberTable args, boolean isWrapper)(Code)(Java Doc)
public static synchronized Class forName(String className) throws ClassNotFoundException(Code)(Java Doc)
public ClassLoader getClassLoader()(Code)(Java Doc)
public static synchronized JavaClassWrapper getClassWrapper(Class javaClass)(Code)(Java Doc)
public static JavaClassWrapper getClassWrapper(String className) throws ClassNotFoundException(Code)(Java Doc)
public Value getMember(int id, boolean exception) throws PackagedScriptObjectException(Code)(Java Doc)
public String getName()(Code)(Java Doc)
protected Value getTypeImpl()(Code)(Java Doc)
protected Value getTypeMember(Value obj, int id)(Code)(Java Doc)
protected Value getTypeMemberImpl(Object javaObj, int id)(Code)(Java Doc)
protected synchronized void init()(Code)(Java Doc)
public boolean isA(Value type)(Code)(Java Doc)
protected void populateMemberSet(Set s, boolean debugger)(Code)(Java Doc)
protected void populateTypeMemberSet(Set s, boolean debugger)(Code)(Java Doc)
Object readResolve() throws java.io.ObjectStreamException(Code)(Java Doc)
final static Method searchForAccessibleMethod(String name, Class javaClass, Class[] paramTypes)(Code)(Java Doc)

Fields inherited from oscript.data.Type

final public static Value HIDDEN_TYPE(Code)(Java Doc)

Methods inherited from oscript.data.Type

public boolean isA(Value type)(Code)(Java Doc)

Fields inherited from oscript.data.Value

final public static boolean DEBUG(Code)(Java Doc)
final public static String[] MEMBER_NAMES(Code)(Java Doc)
final public static Value NULL(Code)(Java Doc)
final public static String PARENT_TYPE_NAME(Code)(Java Doc)
final public static BuiltinType TYPE(Code)(Java Doc)
final public static String TYPE_NAME(Code)(Java Doc)
final public static Value UNDEFINED(Code)(Java Doc)

Methods inherited from oscript.data.Value

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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