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#!/usr/bin/env bash
# Run from your JRuby home directory....More smarts needed here.
#
# For 1.8 parser:
# PATH=$PATH:<path to jay executable> bin/generate_parser DefaultRubyParser
#
# For 1.9 parser:
# PATH=$PATH:<path to jay executable> bin/generate_parser Ruby19Parser Ruby19
#
# jay is available from https://github.com/jruby/jay
###### Change these to tastes ######
JAY=jay
RUBY=/usr/bin/ruby
PARSER_BASE=Ripper19Parser
YYTABLE_PREFIX=
DEBUG=true
###### Do not change below ######
if [ "$1" != "" ]; then
PARSER_BASE=$1
shift
fi
if [ "$1" != "" ]; then
YYTABLE_PREFIX=$1
fi
if [ "$DEBUG" != "" ]; then
DEBUG_FLAG=-t
# Nonesense...my script-fu is weak
DEBUG_STRIP="xdyhbk"
else
DEBUG_FLAG=
DEBUG_STRIP="^//t"
fi
echo "Generating Parser '$PARSER_BASE' w/ YYTable prefix of '$YYTABLE_PREFIX'"
PARSER_DIR=ext/ripper/src/main/java/org/jruby/ext/ripper
BACKUP_DIR=../../../../../../../../..
pushd $PARSER_DIR
# Generate grammar as intermediate file
$JAY $DEBUG_FLAG $PARSER_BASE.y < skeleton.parser | grep -v $DEBUG_STRIP >$PARSER_BASE.out
# Patch file to get around Java static initialization issues plus extract
# a bunch of stuff to seperate file (yytables).
$RUBY $BACKUP_DIR/bin/patch_parser.rb $PARSER_BASE.out $YYTABLE_PREFIX > $PARSER_BASE.out2
$RUBY $BACKUP_DIR/bin/optimize_parser.rb $PARSER_BASE.out2 $YYTABLE_PREFIX > $PARSER_BASE.java
rm -f $PARSER_BASE.out $PARSER_BASE.out2
popd
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