Package org.javacc.jjtree
Class JavaCharStream
java.lang.Object
org.javacc.jjtree.JavaCharStream
An implementation of interface CharStream, where the stream is assumed to
contain only ASCII characters (with java-like unicode escape processing).
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Field Summary
FieldsModifier and TypeFieldDescriptionprotected int[]
protected char[]
protected int[]
int
protected int
protected int
protected Reader
protected int
protected int
protected char[]
protected int
protected boolean
protected boolean
static final boolean
Whether parser is static.protected int
protected boolean
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Constructor Summary
ConstructorsConstructorDescriptionJavaCharStream
(InputStream dstream) Constructor.JavaCharStream
(InputStream dstream, int startline, int startcolumn) Constructor.JavaCharStream
(InputStream dstream, int startline, int startcolumn, int buffersize) Constructor.JavaCharStream
(InputStream dstream, String encoding) Constructor.JavaCharStream
(InputStream dstream, String encoding, int startline, int startcolumn) Constructor.JavaCharStream
(InputStream dstream, String encoding, int startline, int startcolumn, int buffersize) Constructor.JavaCharStream
(Reader dstream) Constructor.JavaCharStream
(Reader dstream, int startline, int startcolumn) Constructor.JavaCharStream
(Reader dstream, int startline, int startcolumn, int buffersize) Constructor. -
Method Summary
Modifier and TypeMethodDescriptionvoid
adjustBeginLineColumn
(int newLine, int newCol) Method to adjust line and column numbers for the start of a token.protected void
void
backup
(int amount) Retreat.char
void
Done()
Set buffers back to null when finished.protected void
ExpandBuff
(boolean wrapAround) protected void
FillBuff()
int
Get the beginning column.int
int
Deprecated.int
Get end column.int
Get end line.GetImage()
Get the token timage.int
getLine()
Deprecated.char[]
GetSuffix
(int len) Get the suffix as an array of characters.int
protected char
ReadByte()
char
readChar()
void
ReInit
(InputStream dstream) Reinitialise.void
ReInit
(InputStream dstream, int startline, int startcolumn) Reinitialise.void
ReInit
(InputStream dstream, int startline, int startcolumn, int buffersize) Reinitialise.void
ReInit
(InputStream dstream, String encoding) Reinitialise.void
ReInit
(InputStream dstream, String encoding, int startline, int startcolumn) Reinitialise.void
ReInit
(InputStream dstream, String encoding, int startline, int startcolumn, int buffersize) Reinitialise.void
void
void
void
setTabSize
(int i) protected void
UpdateLineColumn
(char c)
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Field Details
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staticFlag
public static final boolean staticFlagWhether parser is static.- See Also:
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bufpos
public int bufpos -
bufline
protected int[] bufline -
bufcolumn
protected int[] bufcolumn -
column
protected int column -
line
protected int line -
prevCharIsCR
protected boolean prevCharIsCR -
prevCharIsLF
protected boolean prevCharIsLF -
inputStream
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nextCharBuf
protected char[] nextCharBuf -
buffer
protected char[] buffer -
maxNextCharInd
protected int maxNextCharInd -
nextCharInd
protected int nextCharInd -
inBuf
protected int inBuf -
tabSize
protected int tabSize -
trackLineColumn
protected boolean trackLineColumn
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Constructor Details
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JavaCharStream
Constructor.- Parameters:
dstream
- the underlying data source.startline
- line number of the first character of the stream, mostly for error messages.startcolumn
- column number of the first character of the stream.buffersize
- size of the buffer
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JavaCharStream
Constructor.- Parameters:
dstream
- the underlying data source.startline
- line number of the first character of the stream, mostly for error messages.startcolumn
- column number of the first character of the stream.
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JavaCharStream
Constructor.- Parameters:
dstream
- the underlying data source.startline
- line number of the first character of the stream, mostly for error messages.
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JavaCharStream
public JavaCharStream(InputStream dstream, String encoding, int startline, int startcolumn, int buffersize) throws UnsupportedEncodingException Constructor.- Throws:
UnsupportedEncodingException
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JavaCharStream
Constructor.- Parameters:
dstream
- the underlying data source.startline
- line number of the first character of the stream, mostly for error messages.startcolumn
- column number of the first character of the stream.buffersize
- size of the buffer
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JavaCharStream
public JavaCharStream(InputStream dstream, String encoding, int startline, int startcolumn) throws UnsupportedEncodingException Constructor.- Parameters:
dstream
- the underlying data source.encoding
- the character encoding of the data stream.startline
- line number of the first character of the stream, mostly for error messages.startcolumn
- column number of the first character of the stream.
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JavaCharStream
Constructor.- Parameters:
dstream
- the underlying data source.startline
- line number of the first character of the stream, mostly for error messages.startcolumn
- column number of the first character of the stream.
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JavaCharStream
Constructor.- Parameters:
dstream
- the underlying data source.encoding
- the character encoding of the data stream.
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JavaCharStream
Constructor.- Parameters:
dstream
- the underlying data source.
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Method Details
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setTabSize
public void setTabSize(int i) -
getTabSize
public int getTabSize() -
ExpandBuff
protected void ExpandBuff(boolean wrapAround) -
FillBuff
- Throws:
IOException
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ReadByte
- Throws:
IOException
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BeginToken
- Throws:
IOException
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AdjustBuffSize
protected void AdjustBuffSize() -
UpdateLineColumn
protected void UpdateLineColumn(char c) -
readChar
- Throws:
IOException
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getColumn
Deprecated. -
getLine
Deprecated. -
getEndColumn
public int getEndColumn()Get end column.- Returns:
- the end column or -1
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getEndLine
public int getEndLine()Get end line.- Returns:
- the end line number or -1
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getBeginColumn
public int getBeginColumn()Get the beginning column.- Returns:
- column of token start
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getBeginLine
public int getBeginLine()- Returns:
- line number of token start
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backup
public void backup(int amount) Retreat. -
ReInit
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ReInit
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ReInit
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ReInit
public void ReInit(InputStream dstream, String encoding, int startline, int startcolumn, int buffersize) throws UnsupportedEncodingException Reinitialise.- Parameters:
dstream
- the underlying data source.encoding
- the character encoding of the data stream.startline
- line number of the first character of the stream, mostly for error messages.startcolumn
- column number of the first character of the stream.buffersize
- size of the buffer- Throws:
UnsupportedEncodingException
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ReInit
Reinitialise.- Parameters:
dstream
- the underlying data source.startline
- line number of the first character of the stream, mostly for error messages.startcolumn
- column number of the first character of the stream.buffersize
- size of the buffer
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ReInit
public void ReInit(InputStream dstream, String encoding, int startline, int startcolumn) throws UnsupportedEncodingException Reinitialise.- Parameters:
dstream
- the underlying data source.encoding
- the character encoding of the data stream.startline
- line number of the first character of the stream, mostly for error messages.startcolumn
- column number of the first character of the stream.
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ReInit
Reinitialise.- Parameters:
dstream
- the underlying data source.startline
- line number of the first character of the stream, mostly for error messages.startcolumn
- column number of the first character of the stream.
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ReInit
Reinitialise.- Parameters:
dstream
- the underlying data source.encoding
- the character encoding of the data stream.
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ReInit
Reinitialise.- Parameters:
dstream
- the underlying data source.
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GetImage
Get the token timage.- Returns:
- token image as String
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GetSuffix
public char[] GetSuffix(int len) Get the suffix as an array of characters.- Parameters:
len
- the length of the array to return.- Returns:
- suffix
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Done
public void Done()Set buffers back to null when finished. -
adjustBeginLineColumn
public void adjustBeginLineColumn(int newLine, int newCol) Method to adjust line and column numbers for the start of a token.- Parameters:
newLine
- the new line number.newCol
- the new column number.
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