Package snap.parse

Class Regex

java.lang.Object
snap.parse.Regex
public class Regex extends Object
A class for building regular expressions like a string buffer.

  • Field Details

  • Constructor Details

    • Regex

      public Regex(String aName, String aPattern)
      Constructor with given pattern and name.

  • Method Details

    • getName

      public String getName()
      Returns the regex name.

    • setName

      public void setName(String aName)
      Sets the regex name.

    • getPattern

      public String getPattern()
      Returns the regex pattern.

    • setPattern

      public void setPattern(String aPattern)
      Sets the pattern.

    • isLiteral

      public boolean isLiteral()
      Returns whether pattern is literal.

    • getPatternCompiled

      public Pattern getPatternCompiled()
      Returns the compiled pattern.

    • getPatternCompileFlags

      public int getPatternCompileFlags()
      Returns pattern compile flags.

    • getMatcher

      public Matcher getMatcher()
      Returns the shared matcher.

    • getLiteralLength

      public int getLiteralLength()
      Returns the literal length of this regex (the number of literal chars in the prefix).

    • getLiteralChar

      public char getLiteralChar()
      Returns the first literal in regex pattern (or 0 if not literal).

    • addGroup

      public void addGroup(Regex.Op anOp, String... theParts)
      Adds a group.

    • addChars

      public void addChars(String... theParts)
      Adds a letter.

    • addChar

      public Regex addChar(char c)
      Adds a literal char.

    • addLetter

      public Regex addLetter()
      Adds any letter.

    • addLetterLower

      public Regex addLetterLower()
      Adds any letter.

    • addLetterUpper

      public Regex addLetterUpper()
      Adds any letter.

    • addAnyChar

      public Regex addAnyChar()
      Adds any char (doesn't include newlines).

    • addDigit

      public Regex addDigit()
      Adds a digit: [0-9].

    • addNonDigit

      public Regex addNonDigit()
      Adds a non-digit: [^0-9].

    • addWhitespace

      public Regex addWhitespace()
      Adds whitespace char [ \t\n\x0B\f\r].

    • addNonWhitespace

      public Regex addNonWhitespace()
      Adds non-whitespace char: [^\s].

    • addWordCharacter

      public Regex addWordCharacter()
      Adds a word character: [a-zA-Z_0-9].

    • addNonWordCharacter

      public Regex addNonWordCharacter()
      Adds a non-word character: [^\w].

    • toString

      public String toString()
      Returns a string representation of regex.
      Overrides:
      toString in class Object

    • isSpecialChar

      public static boolean isSpecialChar(char c)
      Utility method to return whether given character is a special char.

    • isAncharChar

      public static boolean isAncharChar(char c)
      Utility method to return whether char is an anchor char.

    • getLiteralLength

      public static int getLiteralLength(String aPattern)
      Returns the literal length of pattern.

    • getLiteralChar

      public static char getLiteralChar(String aPattern)
      Returns the first char of a pattern, if it's a literal char.