Package jmri.jmrit.logixng

Interface SymbolTable

All Known Implementing Classes:

DefaultSymbolTable

public interface SymbolTable

A symbol table

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static enum	SymbolTable.InitialValueType	An enum that defines the types of initial value.
static interface	SymbolTable.Symbol	The definition of the symbol
static class	SymbolTable.SymbolNotFound
static enum	SymbolTable.Type
static class	SymbolTable.VariableData	Data for a variable.

Field Summary

Fields

Modifier and Type	Field	Description
static final org.slf4j.Logger	log

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.
static Object	getInitialValue(SymbolTable.Type type, String name, SymbolTable.InitialValueType initialType, String initialData, SymbolTable symbolTable, Map<String,SymbolTable.Symbol> symbols)
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
static void	printVariable(org.slf4j.Logger log, String pad, String name, Object value, boolean expandArraysAndMaps, boolean showClassName, String headerName, String headerValue)	Print a variable
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
static boolean	validateName(String name)	Validates the name of a symbol
static Object	validateStrictTyping(SymbolTable.InitialValueType type, Object oldValue, Object newValue)	Validates that the value can be assigned to a local or global variable of the specified type if strict typing is enforced.

Field Details

log

static final org.slf4j.Logger log

Method Details

getSymbols

Map<String,SymbolTable.Symbol> getSymbols()

The list of symbols in the table

Returns:

the symbols

getSymbolValues

Map<String,Object> getSymbolValues()

The list of symbols and their values in the table

Returns:

the name of the symbols and their values

getValue

Object getValue(String name)

Get the value of a symbol

Parameters:

name - the name

Returns:

the value

getValueAndType

Stack.ValueAndType getValueAndType(String name)

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

Parameters:

name - the name

Returns:

the value and type

hasValue

boolean hasValue(String name)

Is the symbol in the symbol table?

Parameters:

name - the name

Returns:

true if the symbol exists, false otherwise

setValue

void setValue(String name,
 Object value)

Set the value of a symbol

Parameters:

name - the name

value - the value

createSymbols

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

Add new symbols to the symbol table

Parameters:

symbolDefinitions - the definitions of the new symbols

Throws:

JmriException - if an exception is thrown

createSymbols

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.

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

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

Removes symbols from the symbol table

Parameters:

symbolDefinitions - the definitions of the symbols to be removed

Throws:

JmriException - if an exception is thrown

printSymbolTable

void printSymbolTable(PrintWriter stream)

Print the symbol table on a stream

Parameters:

stream - the stream

validateName

static boolean validateName(String name)

Validates the name of a symbol

Parameters:

name - the name

Returns:

true if the name is valid, false otherwise

getStack

Stack getStack()

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

Returns:

the stack

printVariable

static void printVariable(org.slf4j.Logger log,
 String pad,
 String name,
 Object value,
 boolean expandArraysAndMaps,
 boolean showClassName,
 String headerName,
 String headerValue)

Print a variable

Parameters:

log - the logger

pad - the padding

name - the name

value - the value

expandArraysAndMaps - true if arrays and maps should be expanded, false otherwise

showClassName - true if class name should be shown

headerName - header for the variable name

headerValue - header for the variable value

getInitialValue

static Object getInitialValue(SymbolTable.Type type,
 String name,
 SymbolTable.InitialValueType initialType,
 String initialData,
 SymbolTable symbolTable,
 Map<String,SymbolTable.Symbol> symbols)
                       throws ParserException,
JmriException

Throws:

ParserException

JmriException

validateStrictTyping

static Object validateStrictTyping(SymbolTable.InitialValueType type,
 Object oldValue,
 Object newValue)
                            throws NumberFormatException

Validates that the value can be assigned to a local or global variable of the specified type if strict typing is enforced. The caller must check first if this method should be called or not.

Parameters:

type - the type

oldValue - the old value

newValue - the new value

Returns:

the value to assign. It might be converted if needed.

Throws:

NumberFormatException - when needed