jsint
Class InputPort

java.lang.Object
  |
  +--jsint.InputPort

All Implemented Interfaces:

java.util.Enumeration

public class InputPort

extends java.lang.Object

implements java.util.Enumeration

InputPort is to Scheme as InputStream is to Java.

Author:

Peter Norvig, Copyright 1998, peter@norvig.com, license subsequently modified by Jscheme project members licensed under zlib licence (see license.txt)

Field Summary

boolean	brlsMode
static boolean	defaultBrlsMode
static java.lang.Object	EOF The distinguished end of file marking object.

Constructor Summary

InputPort(java.io.InputStream in)
Construct an InputPort from an InputStream.

InputPort(java.io.Reader in)
Construct an InputPort from a Reader.

Method Summary

java.lang.Object	close() Close the port.
int	getLineNumber()
boolean	hasMoreElements()
static java.lang.Number	negate(java.lang.Number n)
java.lang.Object	nextElement()
java.lang.Object	peekChar() Peek at and return the next Scheme character (or EOF).
java.lang.Object	read()
java.lang.Object	readChar() Read and return a Scheme character or EOF.
static java.lang.Number	readFloatingPoint(java.lang.String s)
static java.lang.Number	readWholeNumber(java.lang.String s)
static java.lang.Object	schemeStringToNumber(java.lang.String tok, int rdx)
static java.lang.Object	stringToNumber(java.lang.String tok, int rdx)

Methods inherited from class java.lang.Object

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

Field Detail

EOF

public static final java.lang.Object EOF

The distinguished end of file marking object.

defaultBrlsMode

public static boolean defaultBrlsMode

brlsMode

public boolean brlsMode

Constructor Detail

InputPort

public InputPort(java.io.InputStream in)

Construct an InputPort from an InputStream.

InputPort

public InputPort(java.io.Reader in)

Construct an InputPort from a Reader.

Method Detail

readChar

public java.lang.Object readChar()

Read and return a Scheme character or EOF.

peekChar

public java.lang.Object peekChar()

Peek at and return the next Scheme character (or EOF). However, don't consume the character.

getLineNumber

public int getLineNumber()

nextElement

public java.lang.Object nextElement()

Specified by:

nextElement in interface java.util.Enumeration

hasMoreElements

public boolean hasMoreElements()

Specified by:

hasMoreElements in interface java.util.Enumeration

read

public java.lang.Object read()

close

public java.lang.Object close()

Close the port. Return TRUE if ok.

schemeStringToNumber

public static java.lang.Object schemeStringToNumber(java.lang.String tok,
                                                    int rdx)

stringToNumber

public static java.lang.Object stringToNumber(java.lang.String tok,
                                              int rdx)

readWholeNumber

public static java.lang.Number readWholeNumber(java.lang.String s)
                                        throws java.lang.NumberFormatException

negate

public static java.lang.Number negate(java.lang.Number n)

readFloatingPoint

public static java.lang.Number readFloatingPoint(java.lang.String s)
                                          throws java.lang.NumberFormatException