Package jmri.jmrit.logixng.implementation

Class DefaultSymbolTable

java.lang.Object

jmri.jmrit.logixng.implementation.DefaultSymbolTable

All Implemented Interfaces:

SymbolTable

public class DefaultSymbolTable
extends Object
implements SymbolTable

The default implementation of a NamedTable

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DefaultSymbolTable.DefaultParameter
static class	DefaultSymbolTable.DefaultSymbol

Nested classes/interfaces inherited from interface jmri.jmrit.logixng.SymbolTable

SymbolTable.InitialValueType, SymbolTable.Symbol, SymbolTable.SymbolNotFound, SymbolTable.Type, SymbolTable.VariableData

Field Summary

Fields inherited from interface jmri.jmrit.logixng.SymbolTable

log

Constructor Summary

Constructors

Constructor	Description
DefaultSymbolTable()	Create a new instance of DefaultSymbolTable with no previous symbol table.
DefaultSymbolTable(ConditionalNG currentConditionalNG)	Create a new instance of DefaultSymbolTable with previous symbol table and the stack from a ConditionalNG.
DefaultSymbolTable(SymbolTable prevSymbolTable)	Create a new instance of DefaultSymbolTable from a previous symbol table and a stack.

Method Summary

Modifier and Type	Method	Description
void	createSymbols(Collection<? extends SymbolTable.VariableData> symbolDefinitions)	Add new symbols to the symbol table
void	createSymbols(SymbolTable symbolTable, Collection<? extends SymbolTable.VariableData> symbolDefinitions)	Add new symbols to the symbol table.
SymbolTable	getPrevSymbolTable()	Get the previous symbol table
Stack	getStack()	Get the stack.
Map<String,SymbolTable.Symbol>	getSymbols()	The list of symbols in the table
Map<String,Object>	getSymbolValues()	The list of symbols and their values in the table
Object	getValue(String name)	Get the value of a symbol
Stack.ValueAndType	getValueAndType(String name)	Get the value and type of a symbol.
boolean	hasValue(String name)	Is the symbol in the symbol table?
void	printSymbolTable(PrintWriter stream)	Print the symbol table on a stream
void	removeSymbols(Collection<? extends SymbolTable.VariableData> symbolDefinitions)	Removes symbols from the symbol table
void	setValue(String name, Object value)	Set the value of a symbol

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultSymbolTable

public DefaultSymbolTable()

Create a new instance of DefaultSymbolTable with no previous symbol table.

DefaultSymbolTable

public DefaultSymbolTable(ConditionalNG currentConditionalNG)

Create a new instance of DefaultSymbolTable with previous symbol table and the stack from a ConditionalNG.

Parameters:

currentConditionalNG - the ConditionalNG

DefaultSymbolTable

public DefaultSymbolTable(SymbolTable prevSymbolTable)

Create a new instance of DefaultSymbolTable from a previous symbol table and a stack.

Parameters:

prevSymbolTable - the previous symbol table

Method Details

getPrevSymbolTable

public SymbolTable getPrevSymbolTable()

Get the previous symbol table

Returns:

the symbol table

getSymbols

public Map<String,SymbolTable.Symbol> getSymbols()

The list of symbols in the table

Specified by:

getSymbols in interface SymbolTable

Returns:

the symbols

getSymbolValues

public Map<String,Object> getSymbolValues()

The list of symbols and their values in the table

Specified by:

getSymbolValues in interface SymbolTable

Returns:

the name of the symbols and their values

getValue

public Object getValue(String name)

Get the value of a symbol

Specified by:

getValue in interface SymbolTable

Parameters:

name - the name

Returns:

the value

getValueAndType

public Stack.ValueAndType getValueAndType(String name)

Get the value and type of a symbol. This method does not lookup global variables.

Specified by:

getValueAndType in interface SymbolTable

Parameters:

name - the name

Returns:

the value and type

hasValue

public boolean hasValue(String name)

Is the symbol in the symbol table?

Specified by:

hasValue in interface SymbolTable

Parameters:

name - the name

Returns:

true if the symbol exists, false otherwise

setValue

public void setValue(String name,
 Object value)

Set the value of a symbol

Specified by:

setValue in interface SymbolTable

Parameters:

name - the name

value - the value

printSymbolTable

public void printSymbolTable(PrintWriter stream)

Print the symbol table on a stream

Specified by:

printSymbolTable in interface SymbolTable

Parameters:

stream - the stream

createSymbols

public void createSymbols(Collection<? extends SymbolTable.VariableData> symbolDefinitions)
                   throws JmriException

Add new symbols to the symbol table

Specified by:

createSymbols in interface SymbolTable

Parameters:

symbolDefinitions - the definitions of the new symbols

Throws:

JmriException - if an exception is thrown

createSymbols

public void createSymbols(SymbolTable symbolTable,
 Collection<? extends SymbolTable.VariableData> symbolDefinitions)
                   throws JmriException

Add new symbols to the symbol table. This method is used for parameters, when new symbols might be created that uses symbols from a previous symbol table.

Specified by:

createSymbols in interface SymbolTable

Parameters:

symbolTable - the symbol table to get existing symbols from

symbolDefinitions - the definitions of the new symbols

Throws:

JmriException - if an exception is thrown

removeSymbols

public void removeSymbols(Collection<? extends SymbolTable.VariableData> symbolDefinitions)
                   throws JmriException

Removes symbols from the symbol table

Specified by:

removeSymbols in interface SymbolTable

Parameters:

symbolDefinitions - the definitions of the symbols to be removed

Throws:

JmriException - if an exception is thrown

getStack

public Stack getStack()

Get the stack. This method is only used internally by DefaultSymbolTable.

Specified by:

getStack in interface SymbolTable

Returns:

the stack