Package com.github.curiousoddman.rgxgen.parsing.dflt

Class CharIterator

java.lang.Object
com.github.curiousoddman.rgxgen.parsing.dflt.CharIterator
public class CharIterator extends Object
Class incorporates functionality to iterate String char by char

  • Constructor Summary

    Constructors
    Constructor
    Description
    CharIterator(String value)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    context()
    Returns context of cursor (text around the cursor)
    String
    context(int index)
    Returns context around passed index
    boolean
    hasNext()
     
    char
    lastChar()
    Returns last character that would be iterated over
    void
    modifyBound(int offset)
    Move the bound until which iterator will iterate
    char
    next()
    Returns next character and advances the cursor
    String
    next(int length)
    Return next length characters as a substring and advance cursor
    String
    nextUntil(char c)
    Returns substring from 'next' character UP TO first not escaped character c Cursor is advanced to a position after character c
    String
    nextUntil(String s)
    Returns substring from next character up to next occurrence of s Cursor is advanced to a position after last character in s
    char
    peek()
    Return next character, without advancing cursor
    char
    peek(int offset)
    Return character by offset from the next, without advancing cursor
    int
    prevPos()
    Return position of last symbol returned by next()
    int
    remaining()
    Calculate number of characters remaining to iterate over
    void
    skip()
    Skip next character
    void
    skip(int n)
    Skip next n characters
    String
    substringToCurrPos(int pos)
     
    String
    takeWhile(Predicate<Character> condition)
    Create substring starting from next character while condition is true Cursor is advanced to the first character which does not match condition

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • CharIterator

      public CharIterator(String value)

  • Method Details

    • hasNext

      public boolean hasNext()

    • skip

      public void skip(int n)
      Skip next n characters
      Parameters:
      n - number of characters to skip

    • skip

      public void skip()
      Skip next character

    • peek

      public char peek()
      Return next character, without advancing cursor
      Returns:
      next character

    • peek

      public char peek(int offset)
      Return character by offset from the next, without advancing cursor
      Parameters:
      offset - offset value.
      Returns:
      character by offset from next

    • next

      public char next()
      Returns next character and advances the cursor

    • next

      public String next(int length)
      Return next length characters as a substring and advance cursor
      Parameters:
      length - number of characters to return
      Returns:
      substring start from next of length characters

    • context

      public String context()
      Returns context of cursor (text around the cursor)
      Returns:
      substring [-5,+5) chars from current position

    • context

      public String context(int index)
      Returns context around passed index
      Parameters:
      index - center point of context
      Returns:
      substring [-5,+5) chars from index

    • remaining

      public int remaining()
      Calculate number of characters remaining to iterate over
      Returns:
      num of characters

    • nextUntil

      public String nextUntil(char c)
      Returns substring from 'next' character UP TO first not escaped character c Cursor is advanced to a position after character c

      Example: For text '0123456789', nextUntil('8') will return '01234567' and put cursor before '9'

      Parameters:
      c - character to search for
      Returns:
      substring from next character up to next not escaped character c
      Throws:
      NoSuchElementException - if no such character present after next character

    • nextUntil

      public String nextUntil(String s)
      Returns substring from next character up to next occurrence of s Cursor is advanced to a position after last character in s

      Example: For text '0123456789', nextUntil("456") will return '0123' and put cursor before '7'

      Parameters:
      s - string to search for
      Returns:
      substring from next character up to next not escaped occurrence of s. if string not found - returns all remaining characters

    • takeWhile

      public String takeWhile(Predicate<Character> condition)
      Create substring starting from next character while condition is true Cursor is advanced to the first character which does not match condition
      Parameters:
      condition - condition to test each character with
      Returns:
      substring of characters that matches condition

    • lastChar

      public char lastChar()
      Returns last character that would be iterated over
      Returns:
      last character that would be iterated over

    • modifyBound

      public void modifyBound(int offset)
      Move the bound until which iterator will iterate
      Parameters:
      offset - offset in respect to current bound

    • prevPos

      public int prevPos()
      Return position of last symbol returned by next()
      Returns:
      index

    • substringToCurrPos

      public String substringToCurrPos(int pos)