Package gw.lang.parser

Class ExternalSymbolMapBase

java.lang.Object

gw.lang.parser.ExternalSymbolMapBase

All Implemented Interfaces:

IExternalSymbolMap

Direct Known Subclasses:

ExternalSymbolMapForMap, ExternalSymbolMapSymbolTableWrapper

public abstract class ExternalSymbolMapBase
extends Object
implements IExternalSymbolMap

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	_assumeSymbolsRequireExternalSymbolMapArgument

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ExternalSymbolMapBase(boolean assumeSymbolsRequireExternalSymbolMapArgument)

Method Summary

Modifier and Type	Method	Description
protected abstract ISymbol	getSymbol(String name)
Object	getValue(String name)	Returns the value for the symbol with the given name.
Object	getValue(String name, int iArrayDims)	Called via bytecode.
Object	invoke(String name, Object[] args)	Invokes the named external function with the given arguments.
private boolean	isCapturedSymbol(int iArrayDims, Object value, Class valueClass)
void	setValue(String name, Object value)	Sets the value of the symbol with the given name.
protected boolean	shouldAddInExternalSymbolMapArgumentForFunctionSymbol(IFunctionSymbol symbol)
protected void	verifySymbol(String name, ISymbol symbol)

Methods inherited from class java.lang.Object

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

Field Details

_assumeSymbolsRequireExternalSymbolMapArgument

private boolean _assumeSymbolsRequireExternalSymbolMapArgument

Constructor Details

ExternalSymbolMapBase

protected ExternalSymbolMapBase(boolean assumeSymbolsRequireExternalSymbolMapArgument)

Method Details

getValue

public Object getValue(String name)

Description copied from interface: IExternalSymbolMap

Returns the value for the symbol with the given name. Throws a runtime exception if the name does not correspond to a valid external symbol.

Specified by:

getValue in interface IExternalSymbolMap

Parameters:

name - the name of the symbol

Returns:

the current value of the symbol

getValue

public Object getValue(String name,
 int iArrayDims)

Description copied from interface: IExternalSymbolMap

Called via bytecode.

Specified by:

getValue in interface IExternalSymbolMap

iArrayDims - the expected number of array dimensions of the the symbol's type, useful for debugger expr evaluation for dynamically unwrapping type a single elem array (a captured var)

Returns:

isCapturedSymbol

private boolean isCapturedSymbol(int iArrayDims,
 Object value,
 Class valueClass)

setValue

public void setValue(String name,
 Object value)

Description copied from interface: IExternalSymbolMap

Sets the value of the symbol with the given name. Throws a runtime exception if the name does not correspond to a valid external symbol.

Specified by:

setValue in interface IExternalSymbolMap

Parameters:

name - the name of the symbol

value - the new value to give that symbol

invoke

public Object invoke(String name,
 Object[] args)

Description copied from interface: IExternalSymbolMap

Invokes the named external function with the given arguments. The name argument should correspond to the result of calling getName() on the external function symbol.

Specified by:

invoke in interface IExternalSymbolMap

Parameters:

name - the name of the function symbol

args - the arguments to the method

Returns:

the result of the function invocation

shouldAddInExternalSymbolMapArgumentForFunctionSymbol

protected boolean shouldAddInExternalSymbolMapArgumentForFunctionSymbol(IFunctionSymbol symbol)

verifySymbol

protected void verifySymbol(String name,
 ISymbol symbol)

getSymbol

protected abstract ISymbol getSymbol(String name)