ast2abox — pretty prints an abstract syntax tree to the Box layout formalism
ast2abox
[-p file]
[-i file | --input file]
[-o file | --input file]
[-b]
[-S | --silent]
[--verbose level]
[-k level | --keep level]
[-h | -? | --help]
[--about]
[--version]
The ast2abox utility is used to pretty-print abstract syntax
trees. The utility transforms an abstract syntax tree according
to formatting rules contained in pretty-print tables, supplied by the
-p option. The result of ast2abox is a Box
term which describes the intended format. This term can be passed to a formatter
which transforms the Box term to some output format.
Consult abox2text for pretty-printing to plain text.
Parsing Options
-p file
Use the pretty print table in file. Required option.
Common Input/Output Options
-i file
The input term given by the file name file
In the absence of the -i option, input
will be read from stdin.
-o file
The output will be written to the file given by the file name
file
In the absence of the -o option,
output will be written to stdout.
-bThe output will be written in the binary (BAF) ATerm format.
ATerms in the BAF format require a lot less space than ones in the TAF format, but the Java ATerm library does not currently support baf ATerms. ATerms in the baf format is the preferred format of exchange between Stratego tools.
Common Debugging Options
--about
See --version.
-h, -?, --helpDisplay usage information.
--keep int
Keep intermediate results produced by the internal stages in the
pretty-printing process. This is only useful for debugging. A high
value of int indicates increased eagerness
for keeping intermediate results.
Default setting is 0, indicating that no intermediates will be kept.
-S, --silent
Silent execution. Same as --verbose .
0
--verbose int
Set verbosity level to numerical value int. The
higher the number, the more information about pp-aterm's inner workings are
printed.
Alternatively, int can be set to either of the
following verbosity levels, given in increasing order of verbosity:
emergency, alert, critical,
error, warning, notice,
info, debug, vomit.
--versionDisplays the tool name and version.
To pretty-print an abstract syntax tree stored in the file
tree.trm to text according to the
pretty-print rules in rules.pp issue the
following command:
$ ast2abox -i tree.trm -p rules.pp | abox2textCopyright (C) 2002-2005 Eelco Visser <visser@acm.org>
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.