oops3
Class Utils

Object
  Utils

All Implemented Interfaces:

Symbols

Direct Known Subclasses:

Gen, Main, Visitor

public abstract class Utils
extends Object
implements Symbols

useful functions.

Version:

3.5.1

Field Summary

protected boolean

error true if there was an error.

Fields inherited from interface Symbols

badInput, endOfFile, firstSymbol, noInput

Constructor Summary

Utils()

Method Summary

static String	className(Object o) return simplified class name.
protected void	error(Parser.Node node, String message) writes error message with (nonzero) position from node.
protected void	error(String message) writes error message, sets error.
static String	fromString(String s) return internal representation of the characters of an external string.
boolean	getError()
protected void	message(String message) should be overwritten to redirect all messages.
static void	testScanner(PrintWriter out, Parser parser, Scanner scanner) Scanner test driver, reads from scanner and prints to out.
static String	toChars(Object o) return external representation of the characters of a string.
static String	toString(Parser parser, BitSet set) return external representation of a Symbols, Literal, and Pattern set.
static String	toString(String s, char delim) return external representation of a string (enclosed in quotes).
protected void	warning(Parser.Node node, String message) writes warning message with (nonzero) position from node.
protected void	warning(String message) writes warning message.

Methods inherited from class Object

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

Field Detail

error

protected boolean error

true if there was an error.

See Also:

error(java.lang.String)

Constructor Detail

Utils

public Utils()

Method Detail

getError

public boolean getError()

toString

public static String toString(String s,
                              char delim)

return external representation of a string (enclosed in quotes).

Parameters:

delim - single or double quote to surround the result.

toChars

public static String toChars(Object o)

return external representation of the characters of a string.

toString

public static String toString(Parser parser,
                              BitSet set)

return external representation of a Symbols, Literal, and Pattern set.

fromString

public static String fromString(String s)

return internal representation of the characters of an external string.

className

public static String className(Object o)

return simplified class name.

testScanner

public static void testScanner(PrintWriter out,
                               Parser parser,
                               Scanner scanner)
                        throws IOException

Scanner test driver, reads from scanner and prints to out.

Throws:

IOException

message

protected void message(String message)

should be overwritten to redirect all messages.

error

protected void error(String message)

writes error message, sets error.

See Also:

message(java.lang.String)

error

protected void error(Parser.Node node,
                     String message)

writes error message with (nonzero) position from node.

warning

protected void warning(String message)

writes warning message.

See Also:

message(java.lang.String)

warning

protected void warning(Parser.Node node,
                       String message)

writes warning message with (nonzero) position from node.