Class JFlexLexer
java.lang.Object
com.thoughtworks.qdox.parser.impl.JFlexLexer
- All Implemented Interfaces:
CommentScanner
,JavaLexer
,Lexer
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
static final int
This character denotes the end of file.static final int
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Constructor Summary
ConstructorsConstructorDescriptionJFlexLexer
(InputStream stream) JFlexLexer
(InputStream stream, Writer writer) JFlexLexer
(Reader in) Creates a new scannerJFlexLexer
(Reader reader, Writer writer) -
Method Summary
Modifier and TypeMethodDescriptionvoid
addCommentHandler
(CommentHandler handler) Register this handler as a comment-listener.int
int
getLine()
int
lex()
text()
final boolean
yyatEOF()
Returns whether the scanner has reached the end of the reader it reads from.final void
yybegin
(int newState) Enters a new lexical state.final char
yycharat
(int position) Returns the character at the given position from the matched text.final void
yyclose()
Closes the input reader.final int
yylength()
How many characters were matched.int
yylex()
Resumes scanning until the next regular expression is matched, the end of input is encountered or an I/O-Error occurs.void
yypushback
(int number) Pushes the specified amount of characters back into the input stream.final void
Resets the scanner to read from a new input stream.final int
yystate()
Returns the current lexical state.final String
yytext()
Returns the text matched by the current regular expression.
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Field Details
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YYEOF
public static final int YYEOFThis character denotes the end of file.- See Also:
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YYINITIAL
public static final int YYINITIAL- See Also:
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JAVADOC
public static final int JAVADOC- See Also:
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JAVADOCTAG
public static final int JAVADOCTAG- See Also:
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JAVADOCLINE
public static final int JAVADOCLINE- See Also:
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CODEBLOCK
public static final int CODEBLOCK- See Also:
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PARENBLOCK
public static final int PARENBLOCK- See Also:
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ASSIGNMENT
public static final int ASSIGNMENT- See Also:
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STRING
public static final int STRING- See Also:
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CHAR
public static final int CHAR- See Also:
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SINGLELINECOMMENT
public static final int SINGLELINECOMMENT- See Also:
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MULTILINECOMMENT
public static final int MULTILINECOMMENT- See Also:
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ANNOTATION
public static final int ANNOTATION- See Also:
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ANNOSTRING
public static final int ANNOSTRING- See Also:
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ANNOCHAR
public static final int ANNOCHAR- See Also:
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ARGUMENTS
public static final int ARGUMENTS- See Also:
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NAME
public static final int NAME- See Also:
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ANNOTATIONTYPE
public static final int ANNOTATIONTYPE- See Also:
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ENUM
public static final int ENUM- See Also:
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MODULE
public static final int MODULE- See Also:
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RECORD
public static final int RECORD- See Also:
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TYPE
public static final int TYPE- See Also:
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ANNOTATIONNOARG
public static final int ANNOTATIONNOARG- See Also:
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ATANNOTATION
public static final int ATANNOTATION- See Also:
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NAME_OR_MODIFIER
public static final int NAME_OR_MODIFIER- See Also:
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Constructor Details
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JFlexLexer
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JFlexLexer
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JFlexLexer
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JFlexLexer
Creates a new scanner- Parameters:
in
- the java.io.Reader to read input from.
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Method Details
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text
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lex
- Specified by:
lex
in interfaceLexer
- Throws:
IOException
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getLine
public int getLine() -
getColumn
public int getColumn() -
getCodeBody
- Specified by:
getCodeBody
in interfaceLexer
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addCommentHandler
Description copied from interface:CommentScanner
Register this handler as a comment-listener. If scanner hits a comment, all handlers will be triggered.- Specified by:
addCommentHandler
in interfaceCommentScanner
- Parameters:
handler
- the commentHandler to add to the CommentScanner
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yyclose
Closes the input reader.- Throws:
IOException
- if the reader could not be closed.
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yyreset
Resets the scanner to read from a new input stream.Does not close the old reader.
All internal variables are reset, the old input stream cannot be reused (internal buffer is discarded and lost). Lexical state is set to
ZZ_INITIAL
.Internal scan buffer is resized down to its initial length, if it has grown.
- Parameters:
reader
- The new input stream.
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yyatEOF
public final boolean yyatEOF()Returns whether the scanner has reached the end of the reader it reads from.- Returns:
- whether the scanner has reached EOF.
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yystate
public final int yystate()Returns the current lexical state.- Returns:
- the current lexical state.
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yybegin
public final void yybegin(int newState) Enters a new lexical state.- Parameters:
newState
- the new lexical state
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yytext
Returns the text matched by the current regular expression.- Returns:
- the matched text.
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yycharat
public final char yycharat(int position) Returns the character at the given position from the matched text.It is equivalent to
yytext().charAt(pos)
, but faster.- Parameters:
position
- the position of the character to fetch. A value from 0 toyylength()-1
.- Returns:
- the character at
position
.
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yylength
public final int yylength()How many characters were matched.- Returns:
- the length of the matched text region.
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yypushback
public void yypushback(int number) Pushes the specified amount of characters back into the input stream.They will be read again by then next call of the scanning method.
- Parameters:
number
- the number of characters to be read again. This number must not be greater thanyylength()
.
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yylex
Resumes scanning until the next regular expression is matched, the end of input is encountered or an I/O-Error occurs.- Returns:
- the next token.
- Throws:
IOException
- if any I/O-Error occurs.
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