#!/bin/sh
# Title: make-rulenames
# Author: Larry Paulson, Cambridge University Computer Laboratory
# Copyright 1990 University of Cambridge
#
#shell script for adding signature and val declarations to a rules file
# usage: make-rulenames <directory>
#
#Input is the file ruleshell.ML, which defines a theory.
#Output is .rules.ML
#
#
#Rule lines begin with a line containing the word "extend_theory"
# and end with a line containing the word "get_axiom"
#
#Each rule name xyz must appear on a line that begins
# <spaces> ("xyz"
# ENSURE THAT THE FIRST RULE LINE DOES NOT CONTAIN A "[" CHARACTER!
#The file RULESIG gets lines like val Eq_comp: thm
# These are inserted after the line containing the string INSERT-RULESIG
#
#The file RULENAMES gets lines like val Eq_comp = ax"Eq_comp";
# These are inserted after the line containing the string INSERT-RULENAMES
#The input file should define the function "ax" above this point.
#
set -eu #terminate if error or unset variable
if [ ! '(' -d $1 -a -f $1/ruleshell.ML ')' ]; \
then echo $1 is not a suitable directory; exit 1; \
fi
sed -n -e '/extend_theory/,/get_axiom/ s/^ *("\([^"]*\)".*$/ val \1: thm/p' $1/ruleshell.ML > RULESIG
sed -n -e '/extend_theory/,/get_axiom/ s/^ *("\([^"]*\)".*$/val \1 = ax"\1";/p' $1/ruleshell.ML > RULENAMES
sed -e '/INSERT-RULESIG/ r RULESIG
/INSERT-RULENAMES/ r RULENAMES' $1/ruleshell.ML > $1/.rules.ML
#WARNING: there must be no spaces after the filename in the "r" command!!
rm RULESIG RULENAMES