com.stevesoft.pat
Class StrPos

java.lang.Object
  |
  +--com.stevesoft.pat.StrPos

public class StrPos

extends java.lang.Object

StrPos is used internally by regex to parse the regular expression.

Field Summary

char	esc This contains the escape character, which is \ by default.

Constructor Summary

StrPos(java.lang.String s, int pos)
Initialize a StrPos by giving it a String, and a position within the String.

StrPos(StrPos sp)
initialize a StrPos from another StrPos.

Method Summary

void	dup(StrPos sp) copy a StrPos from sp to this.
boolean	eos() tell whether we are at end of string
boolean	escaped() Returns true if the current character is escaped (preceeded by "\").
boolean	escMatch(char ch) As match, but only matches if the character is escaped.
patInt	getPatInt() Read in an integer.
java.lang.String	getString() get the string that we are processing.
StrPos	inc() Advance the place where StrPos points within the String.
boolean	incMatch(java.lang.String st) Increment the string pointer by each character in
boolean	match(char ch) Compare the (possibly escaped) character pointed to by StrPos.
int	pos() Return the position in the string pointed to
char	thisChar() Returns the current, possibly escaped, character.

Methods inherited from class java.lang.Object

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

Field Detail

esc

public char esc

This contains the escape character, which is \ by default.

Constructor Detail

StrPos

public StrPos(StrPos sp)

initialize a StrPos from another StrPos.

StrPos

public StrPos(java.lang.String s,
              int pos)

Initialize a StrPos by giving it a String, and a position within the String.

Method Detail

pos

public int pos()

Return the position in the string pointed to

thisChar

public char thisChar()

Returns the current, possibly escaped, character.

eos

public boolean eos()

tell whether we are at end of string

dup

public void dup(StrPos sp)

copy a StrPos from sp to this.

inc

public StrPos inc()

Advance the place where StrPos points within the String. Counts a backslash as part of the next character.

match

public boolean match(char ch)

Compare the (possibly escaped) character pointed to by StrPos. Return true if they are the same, but lways return if character pointed to is escaped.

escMatch

public boolean escMatch(char ch)

As match, but only matches if the character is escaped.

escaped

public boolean escaped()

Returns true if the current character is escaped (preceeded by "\").

incMatch

public boolean incMatch(java.lang.String st)

Increment the string pointer by each character in

st

that matches a non-escaped character.

getPatInt

public patInt getPatInt()

Read in an integer.

getString

public java.lang.String getString()

get the string that we are processing.