org.codehaus.janino.util.charstream

Class StringCharStream

java.lang.Object

org.codehaus.janino.util.charstream.StringCharStream

All Implemented Interfaces:

CharStream

public class StringCharStream
extends Object
implements CharStream

Reads from a String. Notice that none of the overridden methods throw IOException.

Field Summary

Fields inherited from interface org.codehaus.janino.util.charstream.CharStream

EOI

Constructor Summary

Constructors

Constructor and Description
StringCharStream(String in)

Method Summary

Modifier and Type	Method and Description
boolean	atEoi()
void	eoi()
int	peek() Returns the next character on this stream but does not consume it.
boolean	peek(char c) Returns whether the character stream is not at end-of-input and the next character on this stream equals the given character.
int	peek(String chars) Checks whether the next character on this stream equals any of the characters of the given String.
boolean	peekRead(char c) If the next character on this stream equals the given character, it is consumed.
int	peekRead(String chars) If the next character on this stream is in the given String, it is consumed.
char	read() Consumes and returns the next character on this stream.
void	read(char c) Consumes the next character on this stream and verifies that it equals the given character.
int	read(String chars) Consumes the nect character and verifies that it matches one of the characters of the given String.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

StringCharStream

public StringCharStream(String in)

Method Detail

peek

public int peek()

Description copied from interface: CharStream

Returns the next character on this stream but does not consume it.

Specified by:

peek in interface CharStream

Returns:

CharStream.EOI This stream is at end-of-input

peek

public boolean peek(char c)

Description copied from interface: CharStream

Returns whether the character stream is not at end-of-input and the next character on this stream equals the given character. Does not consume any characters.

Specified by:

peek in interface CharStream

peek

public int peek(String chars)

Description copied from interface: CharStream

Checks whether the next character on this stream equals any of the characters of the given String. Does not consume any characters.

Specified by:

peek in interface CharStream

Returns:

The position of the next character in the given String, or -1

read

public char read()
          throws EOFException

Description copied from interface: CharStream

Consumes and returns the next character on this stream.

Specified by:

read in interface CharStream

Throws:

EOFException - This stream is at end-of-input

read

public void read(char c)
          throws EOFException,
                 UnexpectedCharacterException

Description copied from interface: CharStream

Consumes the next character on this stream and verifies that it equals the given character.

Specified by:

read in interface CharStream

Throws:

EOFException - This stream is at end-of-input

UnexpectedCharacterException - The next character does not equal the given character

read

public int read(String chars)
         throws EOFException,
                UnexpectedCharacterException

Description copied from interface: CharStream

Consumes the nect character and verifies that it matches one of the characters of the given String.

Specified by:

read in interface CharStream

Returns:

The position of the next character in the given String

Throws:

EOFException - This stream is at end-of-input

UnexpectedCharacterException - The next character on this stream is not in the given String

peekRead

public boolean peekRead(char c)

Description copied from interface: CharStream

If the next character on this stream equals the given character, it is consumed.

Specified by:

peekRead in interface CharStream

Returns:

true iff the next character on this stream equals the given character

peekRead

public int peekRead(String chars)

Description copied from interface: CharStream

If the next character on this stream is in the given String, it is consumed.

Specified by:

peekRead in interface CharStream

Returns:

The position of the next character in the given String, or -1

eoi

public void eoi()
         throws UnexpectedCharacterException

Specified by:

eoi in interface CharStream

Throws:

UnexpectedCharacterException - This stream is not at end-of-input

atEoi

public boolean atEoi()

Specified by:

atEoi in interface CharStream

Returns:

Whether this stream is at end-of-input

toString

public String toString()

Overrides:

toString in class Object