dk.brics.automaton
Class BasicAutomata

java.lang.Object
  extended by dk.brics.automaton.BasicAutomata

public final class BasicAutomata
extends java.lang.Object

Construction of basic automata.


Method Summary
static Automaton makeAnyChar()
          Returns a new (deterministic) automaton that accepts any single character.
static Automaton makeAnyString()
          Returns a new (deterministic) automaton that accepts all strings.
static Automaton makeChar(char c)
          Returns a new (deterministic) automaton that accepts a single character of the given value.
static Automaton makeCharRange(char min, char max)
          Returns a new (deterministic) automaton that accepts a single char whose value is in the given interval (including both end points).
static Automaton makeCharSet(java.lang.String set)
          Returns a new (deterministic) automaton that accepts a single character in the given set.
static Automaton makeDecimalValue(java.lang.String value)
          Constructs automaton that accept strings representing the given decimal number.
static Automaton makeEmpty()
          Returns a new (deterministic) automaton with the empty language.
static Automaton makeEmptyString()
          Returns a new (deterministic) automaton that accepts only the empty string.
static Automaton makeFractionDigits(int i)
          Constructs automaton that accept strings representing decimal numbers that can be written with at most the given number of digits in the fraction part.
static Automaton makeIntegerValue(java.lang.String value)
          Constructs automaton that accept strings representing the given integer.
static Automaton makeInterval(int min, int max, int digits)
          Returns a new automaton that accepts strings representing decimal non-negative integers in the given interval.
static Automaton makeMaxInteger(java.lang.String n)
          Constructs automaton that accept strings representing nonnegative integers that are not larger than the given value.
static Automaton makeMinInteger(java.lang.String n)
          Constructs automaton that accept strings representing nonnegative integers that are not less that the given value.
static Automaton makeString(java.lang.String s)
          Returns a new (deterministic) automaton that accepts the single given string.
static Automaton makeStringMatcher(java.lang.String s)
          Constructs deterministic automaton that matches strings that contain the given substring.
static Automaton makeTotalDigits(int i)
          Constructs automaton that accept strings representing decimal numbers that can be written with at most the given number of digits.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

makeAnyChar

public static Automaton makeAnyChar()
Returns a new (deterministic) automaton that accepts any single character.


makeAnyString

public static Automaton makeAnyString()
Returns a new (deterministic) automaton that accepts all strings.


makeChar

public static Automaton makeChar(char c)
Returns a new (deterministic) automaton that accepts a single character of the given value.


makeCharRange

public static Automaton makeCharRange(char min,
                                      char max)
Returns a new (deterministic) automaton that accepts a single char whose value is in the given interval (including both end points).


makeCharSet

public static Automaton makeCharSet(java.lang.String set)
Returns a new (deterministic) automaton that accepts a single character in the given set.


makeDecimalValue

public static Automaton makeDecimalValue(java.lang.String value)
Constructs automaton that accept strings representing the given decimal number. Surrounding whitespace is permitted.

Parameters:
value - string representation of decimal number

makeEmpty

public static Automaton makeEmpty()
Returns a new (deterministic) automaton with the empty language.


makeEmptyString

public static Automaton makeEmptyString()
Returns a new (deterministic) automaton that accepts only the empty string.


makeFractionDigits

public static Automaton makeFractionDigits(int i)
Constructs automaton that accept strings representing decimal numbers that can be written with at most the given number of digits in the fraction part. Surrounding whitespace is permitted.

Parameters:
i - max number of necessary fraction digits

makeIntegerValue

public static Automaton makeIntegerValue(java.lang.String value)
Constructs automaton that accept strings representing the given integer. Surrounding whitespace is permitted.

Parameters:
value - string representation of integer

makeInterval

public static Automaton makeInterval(int min,
                                     int max,
                                     int digits)
                              throws java.lang.IllegalArgumentException
Returns a new automaton that accepts strings representing decimal non-negative integers in the given interval.

Parameters:
min - minimal value of interval
max - maximal value of inverval (both end points are included in the interval)
digits - if >0, use fixed number of digits (strings must be prefixed by 0's to obtain the right length) - otherwise, the number of digits is not fixed
Throws:
java.lang.IllegalArgumentException - if min>max or if numbers in the interval cannot be expressed with the given fixed number of digits

makeMaxInteger

public static Automaton makeMaxInteger(java.lang.String n)
Constructs automaton that accept strings representing nonnegative integers that are not larger than the given value.

Parameters:
n - string representation of maximum value

makeMinInteger

public static Automaton makeMinInteger(java.lang.String n)
Constructs automaton that accept strings representing nonnegative integers that are not less that the given value.

Parameters:
n - string representation of minimum value

makeString

public static Automaton makeString(java.lang.String s)
Returns a new (deterministic) automaton that accepts the single given string.


makeStringMatcher

public static Automaton makeStringMatcher(java.lang.String s)
Constructs deterministic automaton that matches strings that contain the given substring.


makeTotalDigits

public static Automaton makeTotalDigits(int i)
Constructs automaton that accept strings representing decimal numbers that can be written with at most the given number of digits. Surrounding whitespace is permitted.

Parameters:
i - max number of necessary digits


Copyright © 2001-2008 Anders Møller.