Package migratedb.v1.core.internal.parser

Class PeekingReader

java.lang.Object

java.io.Reader

java.io.FilterReader

migratedb.v1.core.internal.parser.PeekingReader

All Implemented Interfaces:

Closeable, AutoCloseable, Readable

public class PeekingReader
extends FilterReader

Field Summary

Fields inherited from class java.io.FilterReader

in

Fields inherited from class java.io.Reader

lock

Method Summary

Modifier and Type	Method	Description
boolean	peek(char c)	Peek ahead in the stream to see if the next character matches this one.
boolean	peek(char c1, char c2)	Peek ahead in the stream to see if the next character matches either of these.
String	peek(int numChars)	Peek ahead in the stream to look at this number of characters ahead in the reader.
String	peek(int numChars, boolean peekMultipleLines)	Peek ahead in the stream to look at this number of characters ahead in the reader.
boolean	peek(String str)	Peek ahead in the stream to see if the next characters match this string exactly.
boolean	peekKeywordPart(ParserContext context)	Peek ahead in the stream to see if the next character could be a character part of a keyword or identifier.
char	peekNextNonWhitespace()	Return the next non-whitespace character
boolean	peekNumeric()	Peek ahead in the stream to see if the next character is numeric.
boolean	peekWhitespace()	Peek ahead in the stream to see if the next character is whitespace.
int	read()
String	readKeywordPart(Delimiter delimiter, ParserContext context)	Reads all characters in this stream as long as they can be part of a keyword.
String	readNumeric()	Reads all characters in this stream as long as they can be part of a numeric constant.
String	readUntilExcluding(char delimiter1, char delimiter2)	Reads all characters in this stream until any of these delimiting characters has been encountered.
String	readUntilExcluding(String... strings)	Reads all characters in this stream until any of the delimiting strings is encountered.
String	readUntilExcludingWithEscape(char delimiter, boolean selfEscape)	Reads all characters in this stream until this delimiting character has been encountered, taking into account this escape character for the delimiting character.
String	readUntilExcludingWithEscape(char delimiter, boolean selfEscape, char escape)	Reads all characters in this stream until this delimiting character has been encountered, taking into account this escape character for the delimiting character.
String	readUntilIncluding(char delimiter)	Reads all characters in this stream until any of this delimiting character has been encountered.
String	readUntilIncluding(String delimiterSequence)	Reads all characters in this stream until the delimiting sequence is encountered.
String	readWhitespace()	Reads all characters in this stream as long as they are whitespace.
void	swallow()	Swallows the next character.
void	swallow(int n)	Swallows the next n characters.
void	swallowUntilExcluding(char delimiter1, char delimiter2)	Swallows all characters in this stream until any of these delimiting characters has been encountered.
void	swallowUntilExcluding(String str)	Swallows all characters in this stream until this delimiting string has been encountered.
void	swallowUntilIncludingWithEscape(char delimiter, boolean selfEscape)	Swallows all characters in this stream until this delimiting character has been encountered, taking into account this escape character for the delimiting character.
void	swallowUntilIncludingWithEscape(char delimiter, boolean selfEscape, char escape)	Swallows all characters in this stream until this delimiting character has been encountered, taking into account this escape character for the delimiting character.

Methods inherited from class java.io.FilterReader

close, mark, markSupported, read, ready, reset, skip

Methods inherited from class java.io.Reader

nullReader, read, read, transferTo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

read

public int read()
         throws IOException

Overrides:

read in class FilterReader

Throws:

IOException

swallow

public void swallow()
             throws IOException

Swallows the next character.

Throws:

IOException

swallow

public void swallow(int n)
             throws IOException

Swallows the next n characters.

Throws:

IOException

peek

public boolean peek(char c)
             throws IOException

Peek ahead in the stream to see if the next character matches this one.

Parameters:

c - The character to match.

Returns:

true if it does, false if not.

Throws:

IOException

peek

public boolean peek(char c1,
                    char c2)
             throws IOException

Peek ahead in the stream to see if the next character matches either of these.

Parameters:

c1 - The first character to match.

c2 - The second character to match.

Returns:

true if it does, false if not.

Throws:

IOException

peekNumeric

public boolean peekNumeric()
                    throws IOException

Peek ahead in the stream to see if the next character is numeric.

Returns:

true if it is, false if not.

Throws:

IOException

peekWhitespace

public boolean peekWhitespace()
                       throws IOException

Peek ahead in the stream to see if the next character is whitespace.

Returns:

true if it is, false if not.

Throws:

IOException

peekKeywordPart

public boolean peekKeywordPart(ParserContext context)
                        throws IOException

Peek ahead in the stream to see if the next character could be a character part of a keyword or identifier.

Returns:

true if it is, false if not.

Throws:

IOException

peek

public boolean peek(String str)
             throws IOException

Peek ahead in the stream to see if the next characters match this string exactly.

Parameters:

str - The string to match.

Returns:

true if they do, false if not.

Throws:

IOException

peek

public String peek(int numChars)
            throws IOException

Peek ahead in the stream to look at this number of characters ahead in the reader.

Parameters:

numChars - The number of characters.

Returns:

The characters.

Throws:

IOException

peek

public String peek(int numChars,
                   boolean peekMultipleLines)
            throws IOException

Peek ahead in the stream to look at this number of characters ahead in the reader.

Parameters:

numChars - The number of characters.

peekMultipleLines - Whether the peek should go across lines or not

Returns:

The characters.

Throws:

IOException

peekNextNonWhitespace

public char peekNextNonWhitespace()
                           throws IOException

Return the next non-whitespace character

Returns:

The character

Throws:

IOException

swallowUntilExcluding

public void swallowUntilExcluding(char delimiter1,
                                  char delimiter2)
                           throws IOException

Swallows all characters in this stream until any of these delimiting characters has been encountered.

Parameters:

delimiter1 - The first delimiting character.

delimiter2 - The second delimiting character.

Throws:

IOException

readUntilExcluding

public String readUntilExcluding(char delimiter1,
                                 char delimiter2)
                          throws IOException

Reads all characters in this stream until any of these delimiting characters has been encountered.

Parameters:

delimiter1 - The first delimiting character.

delimiter2 - The second delimiting character.

Returns:

The string read, without the delimiting characters.

Throws:

IOException

swallowUntilIncludingWithEscape

public void swallowUntilIncludingWithEscape(char delimiter,
                                            boolean selfEscape)
                                     throws IOException

Swallows all characters in this stream until this delimiting character has been encountered, taking into account this escape character for the delimiting character.

Parameters:

delimiter - The delimiting character.

selfEscape - Whether the delimiter can escape itself by being present twice.

Throws:

IOException

swallowUntilIncludingWithEscape

public void swallowUntilIncludingWithEscape(char delimiter,
                                            boolean selfEscape,
                                            char escape)
                                     throws IOException

Swallows all characters in this stream until this delimiting character has been encountered, taking into account this escape character for the delimiting character.

Parameters:

delimiter - The delimiting character.

selfEscape - Whether the delimiter can escape itself by being present twice.

escape - A separate escape character.

Throws:

IOException

readUntilExcludingWithEscape

public String readUntilExcludingWithEscape(char delimiter,
                                           boolean selfEscape)
                                    throws IOException

Reads all characters in this stream until this delimiting character has been encountered, taking into account this escape character for the delimiting character.

Parameters:

delimiter - The delimiting character.

selfEscape - Whether the delimiter can escape itself by being present twice.

Returns:

The string read, without the delimiting character.

Throws:

IOException

readUntilExcludingWithEscape

public String readUntilExcludingWithEscape(char delimiter,
                                           boolean selfEscape,
                                           char escape)
                                    throws IOException

Reads all characters in this stream until this delimiting character has been encountered, taking into account this escape character for the delimiting character.

Parameters:

delimiter - The delimiting character.

selfEscape - Whether the delimiter can escape itself by being present twice.

escape - A separate escape character.

Returns:

The string read, without the delimiting character.

Throws:

IOException

swallowUntilExcluding

public void swallowUntilExcluding(String str)
                           throws IOException

Swallows all characters in this stream until this delimiting string has been encountered.

Parameters:

str - The delimiting string.

Throws:

IOException

readUntilExcluding

public String readUntilExcluding(String... strings)
                          throws IOException

Reads all characters in this stream until any of the delimiting strings is encountered.

Parameters:

strings - The delimiting strings.

Returns:

The string read, without the delimiting string.

Throws:

IOException

readUntilIncluding

public String readUntilIncluding(char delimiter)
                          throws IOException

Reads all characters in this stream until any of this delimiting character has been encountered.

Parameters:

delimiter - The delimiting character.

Returns:

The string read, including the delimiting characters.

Throws:

IOException

readUntilIncluding

public String readUntilIncluding(String delimiterSequence)
                          throws IOException

Reads all characters in this stream until the delimiting sequence is encountered.

Parameters:

delimiterSequence - The delimiting sequence.

Returns:

The string read, including the delimiting characters.

Throws:

IOException

readKeywordPart

public String readKeywordPart(Delimiter delimiter,
                              ParserContext context)
                       throws IOException

Reads all characters in this stream as long as they can be part of a keyword.

Parameters:

delimiter - The current delimiter.

Returns:

The string read.

Throws:

IOException

readNumeric

public String readNumeric()
                   throws IOException

Reads all characters in this stream as long as they can be part of a numeric constant.

Returns:

The string read.

Throws:

IOException

readWhitespace

public String readWhitespace()
                      throws IOException

Reads all characters in this stream as long as they are whitespace.

Returns:

The string read.

Throws:

IOException