de.unkrig.commons.text.expression
Class Scanner

java.lang.Object
  de.unkrig.commons.text.expression.Scanner

public final class Scanner
extends java.lang.Object

The scanner for the ExpressionEvaluator.

Nested Class Summary

static class

Scanner.TokenType Token types for the ExpressionEvaluator scanner.

Method Summary

static java.lang.Character	decodeCharacterLiteral(java.lang.String text)
static java.lang.Object	decodeFloatingPointLiteral(java.lang.String text)
static java.lang.Object	decodeIntegerLiteral(java.lang.String text)
static java.lang.String	decodeStringLiteral(java.lang.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 java.lang.Character decodeCharacterLiteral(java.lang.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 java.lang.Object decodeFloatingPointLiteral(java.lang.String text)

Returns:

A Double or a Float

decodeIntegerLiteral

public static java.lang.Object decodeIntegerLiteral(java.lang.String text)
                                             throws ScanException

Returns:

A Long or an Integer

Throws:

ScanException

decodeStringLiteral

public static java.lang.String decodeStringLiteral(java.lang.String text)
                                            throws ScanException

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

Throws:

ScanException