JFlex
public class CharClasses extends Object
Field Summary | |
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static char | maxChar the largest character that can be used in char classes |
Constructor Summary | |
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CharClasses(int maxCharCode)
Constructs a new CharClass object that provides space for
classes of characters from 0 to maxCharCode.
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Method Summary | |
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void | check()
Check consistency of the stored classes [debug].
all classes must be disjoint, checks if all characters
have a class assigned. |
void | dump()
Dump charclasses to the dump output stream |
int | getClassCode(char letter)
Returns the code of the character class the specified character belongs to. |
int[] | getClassCodes(Vector intervallVec)
Returns an array that contains the character class codes of all characters
in the specified set of input characters.
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CharClassInterval[] | getIntervals()
Returns an array of all CharClassIntervalls in this
char class collection.
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char | getMaxCharCode()
Returns the greatest Unicode value of the current input character set. |
int[] | getNotClassCodes(Vector intervallVec)
Returns an array that contains the character class codes of all characters
that are not in the specified set of input characters.
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int | getNumClasses()
Returns the current number of character classes. |
void | makeClass(IntCharSet set, boolean caseless)
Updates the current partition, so that the specified set of characters
gets a new character class.
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void | makeClass(char singleChar, boolean caseless)
Creates a new character class for the single character singleChar .
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void | makeClass(String str, boolean caseless)
Creates a new character class for each character of the specified String.
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void | makeClass(Vector v, boolean caseless)
Updates the current partition, so that the specified set of characters
gets a new character class.
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void | makeClassNot(Vector v, boolean caseless)
Updates the current partition, so that the set of all characters not contained in the specified
set of characters gets a new character class.
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void | setMaxCharCode(int charCode)
Sets the largest Unicode value of the current input character set.
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String | toString(int theClass)
Return a string representation of one char class
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String | toString()
Return a string representation of the char classes
stored in this class.
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Parameters: maxCharCode the last character code to be considered. (127 for 7bit Lexers, 255 for 8bit Lexers and 0xFFFF for Unicode Lexers).
Parameters: intervallVec a Vector of Intervals, the set of characters to get the class codes for
Returns: an array with the class codes for intervallVec
result[i+1].start = result[i].end+1
Each CharClassInterval contains the number of the
char class it belongs to.Parameters: intervallVec a Vector of Intervals, the complement of the set of characters to get the class codes for
Returns: an array with the class codes for the complement of intervallVec
set
are not in the same
equivalence class with characters that are not elements of set
.
Parameters: set the set of characters to distinguish from the rest caseless if true upper/lower/title case are considered equivalent
singleChar
.
Parameters: caseless if true upper/lower/title case are considered equivalent
Parameters: caseless if true upper/lower/title case are considered equivalent
v
are not in the same
equivalence class with characters that are not elements of the set v
.
Parameters: v a Vector of Interval objects. This Vector represents a set of characters. The set of characters is the union of all intervals in the Vector. caseless if true upper/lower/title case are considered equivalent
v
are not in the same
equivalence class with characters that are not elements of the set v
.
This method is equivalent to makeClass(v)
Parameters: v a Vector of Interval objects. This Vector represents a set of characters. The set of characters is the union of all intervals in the Vector. caseless if true upper/lower/title case are considered equivalent
Parameters: charCode the largest character code, used for the scanner (i.e. %7bit, %8bit, %16bit etc.)
Parameters: theClass the index of the class to