Package jmri.jmrit.logixng.util

Class ReferenceUtil

java.lang.Object

jmri.jmrit.logixng.util.ReferenceUtil

public class ReferenceUtil
extends Object

Utility methods to handle references

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	ReferenceUtil.IntRef	Reference to an integer.

Constructor Summary

Constructors

Constructor	Description
ReferenceUtil()

Method Summary

Modifier and Type	Method	Description
static String	getReference(SymbolTable symbolTable, String reference)
protected static String	getReference(SymbolTable symbolTable, String reference, int startIndex, ReferenceUtil.IntRef endIndex)	Get the value of a reference
protected static String	getReferenceOrValue(SymbolTable symbolTable, String reference, int startIndex, ReferenceUtil.IntRef endIndex)	Get the reference or the value.The value ends either with end of string, or with any of the characters comma, left square bracket, right square bracket or right curly bracket.
protected static String	getValue(String reference, int startIndex, ReferenceUtil.IntRef endIndex)	Get the value.
static boolean	isReference(String value)	Checks if the parameter is a reference or not.
protected static String	unescapeString(String value, int startIndex, int endIndex)

Methods inherited from class java.lang.Object

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

Constructor Details

ReferenceUtil

public ReferenceUtil()

Method Details

isReference

public static boolean isReference(String value)

Checks if the parameter is a reference or not.

Parameters:

value - the string to check

Returns:

true if value has a reference. falsw otherwise

unescapeString

protected static String unescapeString(String value,
 int startIndex,
 int endIndex)

getValue

protected static String getValue(String reference,
 int startIndex,
 ReferenceUtil.IntRef endIndex)

Get the value. The value ends either with end of string, or with any of the characters comma, left square bracket, right square bracket or right curly bracket. These characters may be escaped and should then be ignored.

Parameters:

reference - the reference

startIndex - where in the string the value starts, since the reference string may contain several references.

endIndex - index of the end of the value. This is an output parameter.

Returns:

the value

getReferenceOrValue

protected static String getReferenceOrValue(SymbolTable symbolTable,
 String reference,
 int startIndex,
 ReferenceUtil.IntRef endIndex)

Get the reference or the value.The value ends either with end of string, or with any of the characters comma, left square bracket, right square bracket or right curly bracket. These characters may be escaped and should then be ignored.

Parameters:

symbolTable - the symbol table

reference - the reference

startIndex - where in the string the value starts, since the reference string may contain several references.

endIndex - index of the end of the value. This is an output parameter.

Returns:

the value

getReference

protected static String getReference(SymbolTable symbolTable,
 String reference,
 int startIndex,
 ReferenceUtil.IntRef endIndex)

Get the value of a reference

Parameters:

symbolTable - the symbol table

reference - the reference

startIndex - where in the string the reference starts, since the reference string may contain several references.

endIndex - index of the end of the reference. This is an output parameter.

Returns:

the value of the reference

getReference

@CheckReturnValue
@Nonnull
public static String getReference(SymbolTable symbolTable,
 String reference)