oscript.data
Class GlobalScope

java.lang.Object
  oscript.data.Value
      oscript.data.Scope
          oscript.data.BasicScope
              oscript.data.GlobalScope

All Implemented Interfaces:

java.io.Serializable

public class GlobalScope
extends BasicScope

Each interpreter instance has a single global scope, which serves to terminate the scope chain.

Author:

Rob Clark (rob@ti.com)

See Also:

Serialized Form

Field Summary

static Value

TYPE

Fields inherited from class oscript.data.BasicScope

members, mixins, smit

Fields inherited from class oscript.data.Scope

previous

Fields inherited from class oscript.data.Value

DEBUG, MEMBER_NAMES, NULL, PARENT_TYPE_NAME, TYPE_NAME, UNDEFINED

Constructor Summary

GlobalScope()
Class Constructor.

Method Summary

Scope	getSafeCopy() In case a scope has any resource allocated from a source which will no long be valid after a stack frame has returned (ie.
Value	getSuper() Lookup the "super" within a scope.
Value	getThis() Lookup the "this" within a scope.
Value	getThis(Value val) Lookup the qualified "this" within a scope.
protected Value	getTypeImpl() Get the type of this object.
Value	lookupInScope(int id) Get a member from this scope.

Methods inherited from class oscript.data.BasicScope

__getInstanceMember, createMember, free, getInstanceMemberImpl, getMember, getMemberImpl, getType, isSafe, mixin, populateMemberSet, reset

Methods inherited from class oscript.data.Scope

__setJavaObject, createMember, createMember, findDesc, getCallee, getPreviousScope, lookupInScope, lookupInScope

Methods inherited from class oscript.data.Value

_getTypeMember, _populateTypeMemberSet, bopBitwiseAnd, bopBitwiseAndR, bopBitwiseOr, bopBitwiseOrR, bopBitwiseXor, bopBitwiseXorR, bopCast, bopCastR, bopDivide, bopDivideR, bopEquals, bopEqualsR, bopGreaterThan, bopGreaterThanOrEquals, bopGreaterThanOrEqualsR, bopGreaterThanR, bopInstanceOf, bopInstanceOfR, bopLeftShift, bopLeftShiftR, bopLessThan, bopLessThanOrEquals, bopLessThanOrEqualsR, bopLessThanR, bopLogicalAnd, bopLogicalAndR, bopLogicalOr, bopLogicalOrR, bopMinus, bopMinusR, bopMultiply, bopMultiplyR, bopNotEquals, bopNotEqualsR, bopPlus, bopPlusR, bopRemainder, bopRemainderR, bopSignedRightShift, bopSignedRightShiftR, bopUnsignedRightShift, bopUnsignedRightShiftR, callAsConstructor, callAsConstructor, callAsConstructor, callAsExtends, callAsExtends, callAsExtends, callAsFunction, callAsFunction, callAsFunction, castToBoolean, castToExactNumber, castToInexactNumber, castToJavaObject, castToString, elementAt, elementsAt, getMember, getMember, getMember, getMember, getMember, getMonitor, getTypeMember, getTypeMember, isA, length, memberSet, noSuchMember, opAssign, populateTypeMemberSet, readExternal, toString, unhand, uopBitwiseNot, uopDecrement, uopIncrement, uopLogicalNot, uopMinus, uopPlus, writeExternal

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

TYPE

public static final Value TYPE

Constructor Detail

GlobalScope

public GlobalScope()

Class Constructor.

Method Detail

getTypeImpl

protected Value getTypeImpl()

Get the type of this object. The returned type doesn't have to take into account the possibility of a script type extending a built-in type, since that is handled by BasicScope.getType().

Overrides:

getTypeImpl in class BasicScope

Returns:

the object's type

getSafeCopy

public Scope getSafeCopy()

In case a scope has any resource allocated from a source which will no long be valid after a stack frame has returned (ie. resource allocated from stack), return a copy of the scope that is safe to keep after the stack frame returns.

Overrides:

getSafeCopy in class BasicScope

getSuper

public Value getSuper()

Lookup the "super" within a scope. Within a function body, "super" is the overriden function (if there is one).

Overrides:

getSuper in class Scope

Returns:

the "this" ScriptObject within this scope

getThis

public Value getThis()

Lookup the "this" within a scope. The "this" is the first scope chain node that is an object, rather than a regular scope chain node.

Overrides:

getThis in class Scope

Returns:

the "this" ScriptObject within this scope

getThis

public Value getThis(Value val)

Lookup the qualified "this" within a scope. The qualified "this" is the first scope chain node that is an object and an instance of the specified type, rather than a regular scope chain node.

Overrides:

getThis in class Scope

Parameters:

val - the type that the "this" qualifies

Returns:

the qualified "this" ScriptObject within this scope

lookupInScope

public Value lookupInScope(int id)
                    throws PackagedScriptObjectException

Get a member from this scope. This is used to access local variables and object attributes from methods of the object. If the attribute isn't in this node in the scope chain, then the previous node in the scope chain is checked.

Overrides:

lookupInScope in class BasicScope

Parameters:

id - the id of the symbol that maps to the member

Throws:

PackagedScriptObjectException(NoSuchMemberException)

PackagedScriptObjectException