de.unkrig.commons.text.expression

Class Scanner

java.lang.Object

de.unkrig.commons.text.expression.Scanner

public final class Scanner
extends Object

The scanner for the ExpressionEvaluator.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Scanner.TokenType Token types for the ExpressionEvaluator scanner.

Method Summary

Modifier and Type	Method and Description
static Character	decodeCharacterLiteral(String text)
static Object	decodeFloatingPointLiteral(String text)
static Object	decodeIntegerLiteral(String text)
static String	decodeStringLiteral(String text) Removes the double quotes and the escape sequences from the given string literal.
static StringScanner<Scanner.TokenType>	stringScanner()

Methods inherited from class java.lang.Object

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

Method Detail

stringScanner

public static StringScanner<Scanner.TokenType> stringScanner()

Returns:

A StringScanner for the given Scanner.TokenType

decodeCharacterLiteral

public static Character decodeCharacterLiteral(String text)
                                        throws ScanException

Returns:

E.g. a single quote if the text is single quote, backslash, single quote, single quote

Throws:

ScanException

decodeFloatingPointLiteral

public static Object decodeFloatingPointLiteral(String text)

Returns:

A Double or a Float

decodeIntegerLiteral

public static Object decodeIntegerLiteral(String text)
                                   throws ScanException

Returns:

A Long or an Integer

Throws:

ScanException

decodeStringLiteral

public static String decodeStringLiteral(String text)
                                  throws ScanException

Removes the double quotes and the escape sequences from the given string literal.

Throws:

ScanException