bcg
Class FrontEnd

java.lang.Object
  bcg.FrontEnd

public class FrontEnd
extends java.lang.Object

Front-end to the BCG language

Field Summary

protected static java.lang.String

USAGE

Constructor Summary

FrontEnd()

Method Summary

static void	main(java.lang.String[] args) Compile and/or run a BCG program.
protected static void	unknown(java.lang.String opt)
protected static void	usage()
protected static void	usage(int code)

Methods inherited from class java.lang.Object

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

Field Detail

USAGE

protected static final java.lang.String USAGE

See Also:

Constant Field Values

Constructor Detail

FrontEnd

public FrontEnd()

Method Detail

unknown

protected static void unknown(java.lang.String opt)

usage

protected static void usage()

usage

protected static void usage(int code)

main

public static void main(java.lang.String[] args)

Compile and/or run a BCG program. java -cp bcg.jar FrontEnd [<options>] [--] [<file>] Where options includes: -v prints stack traces on exceptions -d[rpsa] Print debug information (parse trees) Bare -d is the same as -ds -dr prints the raw parse tree via toString -dp prints the parse tree with types and indenting -ds prints the syntax tree (AST) -sa prints all the above -n Do not run code. Most useful with -d options -i Interprets the code rather than compiling -c Compiles to a class file instead of running directly. Requires either a source file (not standard in) or the -o option. -o <name> Sets the output class name (Implies -c) Note: -n, -i and -c are mutually exclusive -- Stops option parsing. If there is no file provided on the command line, it reads from standard input. To force this, use "-" as the file name. Only one file can be given at a time.