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|
#!/usr/bin/env ruby
# ACL2 Bridge -- Basic Ruby Interface
# Copyright (C) 2012 Centaur Technology
#
# Contact:
# Centaur Technology Formal Verification Group
# 7600-C N. Capital of Texas Highway, Suite 300, Austin, TX 78731, USA.
# http://www.centtech.com/
#
# License: (An MIT/X11-style license)
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
# Original author: Jared Davis <jared@centtech.com>
require 'getopt/long'
require_relative 'ACL2Bridge.rb'
debug = false
PROGRAM_NAME = $0
HELP_MESSAGE = <<END
Demo Client for ACL2 Bridge in Ruby
USAGE: #{PROGRAM_NAME} [OPTIONS] --socket FILE
or
#{PROGRAM_NAME} [OPTIONS] --host HOST[:PORT]
The --socket form connects to a local acl2-bridge server over a unix domain
socket. FILE is the name of the socket file where the server is listening.
The --host form connects to a remote acl2-bridge server at HOST. The :PORT
can be omitted and defaults to #{ACL2Bridge::DEFAULT_PORT}.
OPTIONS:
-h Show this help message and exit.
--help
-d Print verbose debugging messages.
--debug
END
opts = Getopt::Long.getopts(["--socket", "", Getopt::REQUIRED],
["--host", "", Getopt::REQUIRED],
["--help", "-h"],
["--debug", "-d"])
if opts["debug"]
debug = true
end
if opts["help"]
puts HELP_MESSAGE
exit(0)
end
if opts["socket"] and opts["host"]
puts "Error: can't connect to both a --socket and a --host."
puts "See --help for usage"
exit(1)
end
if !opts["socket"] and !opts["host"]
puts "Error: need at least --socket or --host."
puts "See --help for usage"
exit(1)
end
host = opts["host"]
port = ACL2Bridge::DEFAULT_PORT
if (opts["host"] =~ /^(.*):([0-9]+)$/)
host = $1
port = $2
end
def read_command()
print "\ndemo > "
input = ""
STDIN.each_line { |line|
input = input + line
return input if (line == "\n")
}
return nil
end
def read_eval_print_loop(bridge, debug)
while true
input = read_command
return unless input
# Note: this uses the low-level interface, which lets it print the messages
# it receives in interleaved form. For web applications, you might prefer
# higher-level interfaces.
bridge.send_command(:lisp_mv, input)
bridge.until_ready { |type, content|
print "[#{type}]: " if debug
print content
}
end
end
bridge = ACL2Bridge.new(:debug => debug,
:socket => opts["socket"],
:host => host,
:port => port)
puts <<END
Notes: This is a basic read-eval-print loop.
- Hit ENTER twice to submit a command.
- Exactly one command at a time is required.
It is an error to give a partial command, e.g., (+ 1
It is an error to give multiple commands, e.g., (+ 1 2) (+ 3 4)
- We use :LISP_MV mode, so (+ 1 2) = (3) instead of 3. (You're seeing the
multiple-value-list of the answer. The bridge has other modes, e.g., for
single-value output, JSON encoding, etc.)
- Use EOF to exit and leave the server running, or (quit) to shut down
the server (and kill your client with an error).
- Try commands like these, and see how the output gets spilt into multiple
messages and is separated from the return value:
(progn (format t "Hello, five is ~a~%" 5)
(cw "Hello, five is ~x0~%" 5))
It's too bad how ACL2's printing routines do everything character by
character.
END
read_eval_print_loop(bridge, debug)
bridge.close
|
