jsyntaxpane.lexers
public abstract class DefaultJFlexLexer extends java.lang.Object implements Lexer
Modifier and Type | Field and Description |
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protected int |
offset |
protected int |
tokenLength |
protected int |
tokenStart |
Constructor and Description |
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DefaultJFlexLexer() |
Modifier and Type | Method and Description |
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void |
parse(javax.swing.text.Segment segment,
int ofst,
java.util.List<Token> tokens)
The DefaultJFlexLexer simply calls the yylex method of a JFLex compatible
Lexer and adds the tokens obtained to an ArrayList.
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protected Token |
token(TokenType type)
Create and return a Token of given type.
|
protected Token |
token(TokenType type,
int pairValue)
Create and return a Token of given type and pairValue.
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protected Token |
token(TokenType type,
int start,
int length)
Create and return a Token of given type from start with length
offset is added to start
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protected Token |
token(TokenType type,
int tStart,
int tLength,
int newStart,
int newLength)
Helper method to create and return a new Token from of TokenType
tokenStart and tokenLength will be modified to the newStart and
newLength params
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abstract int |
yychar()
Return the char number from beginning of input stream.
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abstract char |
yycharat(int pos)
Returns the character at position pos from the
matched text.
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abstract int |
yylength()
Returns the length of the matched text region.
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abstract Token |
yylex()
This is called to return the next Token from the Input Reader
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abstract void |
yyreset(java.io.Reader reader)
This will be called to reset the the lexer.
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abstract java.lang.String |
yytext()
Returns the text matched by the current regular expression.
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protected int tokenStart
protected int tokenLength
protected int offset
protected Token token(TokenType type, int tStart, int tLength, int newStart, int newLength)
type
- tStart
- tLength
- newStart
- newLength
- protected Token token(TokenType type, int start, int length)
type
- start
- length
- protected Token token(TokenType type)
yychar()
and length from yylength()
offset is added to starttype
- protected Token token(TokenType type, int pairValue)
yychar()
and length from yylength()
offset is added to starttype
- pairValue
- public void parse(javax.swing.text.Segment segment, int ofst, java.util.List<Token> tokens)
public abstract void yyreset(java.io.Reader reader)
reader
- public abstract Token yylex() throws java.io.IOException
java.io.IOException
public abstract char yycharat(int pos)
pos
- the position of the character to fetch.
A value from 0 to yylength()-1.public abstract int yylength()
public abstract java.lang.String yytext()
public abstract int yychar()