oops3
Class Main

Object
  Utils
      Main

All Implemented Interfaces:

Symbols

public class Main
extends Utils

command line for the parser generator (only the first letter of each option is significant). The options are to facilitate experiments with the algorithms; they must be used in proper order and they do not interlock on errors.

-actions name	generate builder interface from a parser
-build new name file [builder-class [scanner-class]]	use parser to build a new tree
-Build new name file [builder-class [scanner-class]]	... and show trace
-check name	check grammar for unlimited recursion
-Check name	... and for LL(1)
-dump name	dump a parser
-Dump name	... and include lookahead
-epilog name	output epilog from a parser
-follow name	show lookahead and follow sets for a parser
-Functional	toggle the functional flag, which is off by default.
-generate [path]name.style	generate frontend with LL(1) parser, shorthand for -Input boot style.ser -lookahead boot -build name boot [path]name.style oops3.StyleBuilder -lookahead name -Check name -write name name.ser -prolog name -main name.ser Tree -scanner name -tree name Tree -epilog name
-Generate [path]name.style	... and do not store null for no input
-input name file	input a serialized tree
-Input name resource	... from a resource, not a file
-lookahead name	add lookahead to a parser
-main resource [builder-class]	output compiler main program to load resource
-Main resource [builder-class]	... and do not store null for no input
-observe new name file [observer-class scanner-class]	use parser to observe recognition
-Observe new name file [observer-class scanner-class]	... and show trace
-prolog name	output prolog from a parser
-Print name	print patterns and rules from a parser
-recognize name file	use parser to recognize
-Recognize name file	... and show trace
-scanner name	use JLex to generate a scanner from a parser
-Scanner name	show input for JLex from a parser
-tree name [builder-class]	generate tree factory source from a parser
-write name file	write serialized form to file
if the functional flag is on, a few commands are changed as follows:
-generate [path]name.style	generate frontend with functional LL(n) parser, shorthand for -Input boot style.ser -lookahead boot -build name boot [path]name.style oops3.StyleBuilder -prolog name -scanner name -write name -main name mopsTreeFactory -tree name mopsTreeFactory -epilog name
-Generate [path]name.style	... and do not store null for no input
-main name [builder-class]	output main program
-Main name [builder-class]	... and do not store null for no input
-Scanner name	output scanner based on regular expressions, see scanner.
-scanner name	... and output token parsers
-write name	output functional LL(n) parser, see mops.

Version:

3.6.1

Field Summary

protected boolean	functional set to use functional parser.
protected HashMap<String,Object>	map a bit of a hack: commands is used recursively.
protected PrintWriter	out

Fields inherited from class Utils

error

Fields inherited from interface Symbols

badInput, endOfFile, firstSymbol, noInput

Constructor Summary

Main()

Method Summary

void	commands(String... args) run commands as described above.
protected boolean	isTrue(String who, boolean bool) mark unexpected false as an error.
static void	main(String... args) run a command line, exit code 1 if there was an error or exception.
protected Object	notNull(String who, Object pointer) mark unexpected null pointer as an error.

Methods inherited from class Utils

className, error, error, fromString, getError, message, testScanner, toChars, toString, toString, warning, warning

Methods inherited from class Object

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

Field Detail

map

protected HashMap<String,Object> map

a bit of a hack: commands is used recursively.

out

protected PrintWriter out

functional

protected boolean functional

set to use functional parser.

Constructor Detail

Main

public Main()

Method Detail

commands

public void commands(String... args)
              throws Exception

run commands as described above.

Throws:

Exception

notNull

protected Object notNull(String who,
                         Object pointer)

mark unexpected null pointer as an error.

isTrue

protected boolean isTrue(String who,
                         boolean bool)

mark unexpected false as an error.

main

public static void main(String... args)

run a command line, exit code 1 if there was an error or exception.