| java.lang.Object
 org.antlr.runtime.ANTLRStringStream
All known Subclasses: org.antlr.runtime.ANTLRFileStream, org.antlr.runtime.ANTLRReaderStream,
| ANTLRStringStream | | public class ANTLRStringStream implements CharStream(Code) | | A pretty quick CharStream that pulls all data from an array
directly. Every method call counts in the lexer. Java's
strings aren't very good so I'm avoiding.
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| Field Summary | |
| protected int | charPositionInLine
| | protected char[] | data
| | protected int | lastMarker
Track the last mark() call result value for use in rewind(). | | protected int | line
| | protected int | markDepth
| | protected List | markers
A list of CharStreamState objects that tracks the stream state
values line, charPositionInLine, and p that can change as you
move through the input stream. | | protected int | n
| | protected int | p
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| Method Summary | |
| public int | LA(int i)
| | public int | LT(int i)
| | public void | consume()
| | public int | getCharPositionInLine()
| | public int | getLine()
| | public int | index()
Return the current input symbol index 0..n where n indicates the
last symbol has been read. | | public int | mark()
| | public void | release(int marker)
| | public void | reset()
Reset the stream so that it's in the same state it was
when the object was created *except* the data array is not
touched. | | public void | rewind(int m)
| | public void | rewind()
| | public void | seek(int index)
consume() ahead until p==index; can't just set p=index as we must
update line and charPositionInLine. | | public void | setCharPositionInLine(int pos)
| | public void | setLine(int line)
| | public int | size()
| | public String | substring(int start, int stop)
|
| charPositionInLine | | protected int charPositionInLine(Code) | | The index of the character relative to the beginning of the line 0..n-1
|
| data | | protected char[] data(Code) | | The data being scanned
|
| lastMarker | | protected int lastMarker(Code) | | Track the last mark() call result value for use in rewind().
|
| line | | protected int line(Code) | | line number 1..n within the input
|
| markDepth | | protected int markDepth(Code) | | tracks how deep mark() calls are nested
|
| markers | | protected List markers(Code) | | A list of CharStreamState objects that tracks the stream state
values line, charPositionInLine, and p that can change as you
move through the input stream. Indexed from 1..markDepth.
A null is kept @ index 0. Create upon first call to mark().
|
| n | | protected int n(Code) | | How many characters are actually in the buffer
|
| p | | protected int p(Code) | | 0..n-1 index into string of next char
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| ANTLRStringStream | | public ANTLRStringStream()(Code) | | |
| ANTLRStringStream | | public ANTLRStringStream(String input)(Code) | | Copy data in string to a local char array
|
| ANTLRStringStream | | public ANTLRStringStream(char[] data, int numberOfActualCharsInArray)(Code) | | This is the preferred constructor as no data is copied
|
| consume | | public void consume()(Code) | | |
| getCharPositionInLine | | public int getCharPositionInLine()(Code) | | |
| getLine | | public int getLine()(Code) | | |
| index | | public int index()(Code) | | Return the current input symbol index 0..n where n indicates the
last symbol has been read. The index is the index of char to
be returned from LA(1).
|
| release | | public void release(int marker)(Code) | | |
| reset | | public void reset()(Code) | | Reset the stream so that it's in the same state it was
when the object was created *except* the data array is not
touched.
|
| rewind | | public void rewind(int m)(Code) | | |
| rewind | | public void rewind()(Code) | | |
| seek | | public void seek(int index)(Code) | | consume() ahead until p==index; can't just set p=index as we must
update line and charPositionInLine.
|
| setCharPositionInLine | | public void setCharPositionInLine(int pos)(Code) | | |
| setLine | | public void setLine(int line)(Code) | | |
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