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java.lang.Objectgnu.prolog.io.parser.ReaderCharStream
public final class ReaderCharStream
An implementation of interface CharStream, where the stream is assumed to contain only ASCII characters (without unicode processing). TODO: add unicode support.
| Field Summary | |
|---|---|
int |
bufpos
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| Constructor Summary | |
|---|---|
ReaderCharStream(Reader dstream,
int startline,
int startcolumn)
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ReaderCharStream(Reader dstream,
int startline,
int startcolumn,
int buffersize)
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| Method Summary | |
|---|---|
void |
backup(int amount)
Backs up the input stream by amount steps. |
char |
BeginToken()
Returns the next character that marks the beginning of the next token. |
void |
Done()
The lexer calls this function to indicate that it is done with the stream and hence implementations can free any resources held by this class. |
int |
getBeginColumn()
Returns the column number of the first character for current token (being matched after the last call to BeginTOken). |
int |
getBeginLine()
Returns the line number of the first character for current token (being matched after the last call to BeginTOken). |
int |
getColumn()
Deprecated. |
int |
getEndColumn()
Returns the column number of the last character for current token (being matched after the last call to BeginTOken). |
int |
getEndLine()
Returns the line number of the last character for current token (being matched after the last call to BeginTOken). |
String |
GetImage()
Returns a string made up of characters from the marked token beginning to the current buffer position. |
int |
getLine()
Deprecated. |
char[] |
GetSuffix(int len)
Returns an array of characters that make up the suffix of length 'len' for the currently matched token. |
char |
readChar()
Returns the next character from the selected input. |
void |
reInit(Reader dstream,
int startline,
int startcolumn)
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void |
reInit(Reader dstream,
int startline,
int startcolumn,
int buffersize)
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| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
public int bufpos
| Constructor Detail |
|---|
public ReaderCharStream(Reader dstream,
int startline,
int startcolumn,
int buffersize)
public ReaderCharStream(Reader dstream,
int startline,
int startcolumn)
| Method Detail |
|---|
public final char BeginToken()
throws IOException
CharStream
BeginToken in interface CharStreamIOException
public final char readChar()
throws IOException
CharStream
readChar in interface CharStreamIOException@Deprecated public final int getColumn()
CharStream
getColumn in interface CharStreamgetEndColumn()@Deprecated public final int getLine()
CharStream
getLine in interface CharStreamgetEndLine()public final int getEndColumn()
CharStream
getEndColumn in interface CharStreampublic final int getEndLine()
CharStream
getEndLine in interface CharStreampublic final int getBeginColumn()
CharStream
getBeginColumn in interface CharStreampublic final int getBeginLine()
CharStream
getBeginLine in interface CharStreampublic final void backup(int amount)
CharStream
backup in interface CharStream
public void reInit(Reader dstream,
int startline,
int startcolumn,
int buffersize)
public void reInit(Reader dstream,
int startline,
int startcolumn)
public final String GetImage()
CharStream
GetImage in interface CharStreampublic final char[] GetSuffix(int len)
CharStream
GetSuffix in interface CharStreampublic void Done()
CharStream
Done in interface CharStream
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