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codkiller-V1.0_toplevel.pl
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# Program for Syntactic Reordering
# Reads English parse trees (one tree per line) from stdin and
# and writes out English sentences in Hindi word-order to stdout.
# Example usage: cat <input_file> | perl syn-reorder.pl
# Author: Ananthakrishnan R (anand@cse.iitb.ac.in)
#!/usr/bin/perl
use Parse::RecDescent;
my $parser = new Parse::RecDescent q{
sentence : dcphrase(s)
{ $return = "@{$item[1]}" }
text : /[^\s\(\)]+/
{ $return = "$item[1]" }
punct : /\(\S+/ /[^\)]+/ ')'
{ $return = "$item[2]" }
unknownphrasetag : /\(\S+/ dcphrase(s) ')'
{ $return = "@{$item[2]}" }
unknownwordtag : /\(\S+/ text ')'
{ $return = "$item[2]" }
advword : '(RB' text ')'
{ $return = "$item[2]" }
| '(RBR' text ')'
{ $return = "$item[2]" }
| '(RBS' text ')'
{ $return = "$item[2]" }
| '(DT' text ')'
{ $return = "$item[2]" }
prepword : '(IN' text ')'
{ $return = "$item[2]" }
| '(TO' text ')'
{ $return = "$item[2]" }
| '(VBG' text ')'
{ $return = "$item[2]" }
prepvp : '(VP' prepword vp ')'
{ $return = "$item[3] $item[2]" }
vp : '(VP' vgword(s) dcphrase(s) ')'
{ $return = "@{$item[3]} @{$item[2]}" }
| '(VP' vgword(s) ')'
{ $return = "@{$item[2]}" }
| '(VP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
nppp : '(NP' np pp(s) ')'
{ $return = "$item[2] @{$item[3]}" }
np : '(NP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
pp : '(PP' prepword(s) dcphrase(s) ')'
{ $return = "@{$item[2]} @{$item[3]} " }
| '(PP' '(ADVP' advword(s) ')' prepword(s) dcphrase(s) ')'
{ $return = "@{$item[3]} @{$item[5]} @{$item[6]}" }
pnp : '(PP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
vgword : '(VB' text ')'
{ $return = "$item[2]" }
| '(VBD' text ')'
{ $return = "$item[2]" }
| '(VBG' text ')'
{ $return = "$item[2]" }
| '(VBN' text ')'
{ $return = "$item[2]" }
| '(VBP' text ')'
{ $return = "$item[2]" }
| '(VBZ' text ')'
{ $return = "$item[2]" }
| '(PRT' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(MD' text ')'
{ $return = "$item[2]"; }
dcphrase : '(ADJP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(ADVP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(CONJP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(FRAG' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(INTJ' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(LST' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(NAC' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(NX' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(PRN' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(PRT' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(QP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(RRC' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(UCP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(WHADJP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(WHADVP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(WHNP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(WHPP' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(X' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(ROOT' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(S' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(SBAR' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(SBARQ' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(SINV' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| '(SQ' dcphrase(s) ')'
{ $return = "@{$item[2]}" }
| prepvp
{ $return = "$item[1]" }
| vp
{ $return = "$item[1]" }
| nppp
{ $return = "$item[1]" }
| np
{ $return = "$item[1]" }
| pp
{ $return = "$item[1]" }
| pnp
{ $return = "$item[1]" }
| '(CC' text ')'
{ $return = "$item[2]" }
| '(CD' text ')'
{ $return = "$item[2]" }
| '(DT' text ')'
{ $return = "$item[2]" }
| '(EX' text ')'
{ $return = "$item[2]" }
| '(FW' text ')'
{ $return = "$item[2]" }
| '(JJ' text ')'
{ $return = "$item[2]" }
| '(JJR' text ')'
{ $return = "$item[2]" }
| '(JJS' text ')'
{ $return = "$item[2]" }
| '(LS' text ')'
{ $return = "$item[2]" }
| '(NN' text ')'
{ $return = "$item[2]" }
| '(NNS' text ')'
{ $return = "$item[2]" }
| '(NNP' text ')'
{ $return = "$item[2]" }
| '(NNPS' text ')'
{ $return = "$item[2]" }
| '(PDT' text ')'
{ $return = "$item[2]" }
| '(POS' text ')'
{ $return = "$item[2]" }
| '(PRP' text ')'
{ $return = "$item[2]" }
| '(PRP$' text ')'
{ $return = "$item[2]" }
| '(RB' text ')'
{ $return = "$item[2]" }
| '(RBR' text ')'
{ $return = "$item[2]" }
| '(RBS' text ')'
{ $return = "$item[2]" }
| '(RP' text ')'
{ $return = "$item[2]" }
| '(SYM' text ')'
{ $return = "$item[2]" }
| '(UH' text ')'
{ $return = "$item[2]" }
| '(WDT' text ')'
{ $return = "$item[2]" }
| '(WP' text ')'
{ $return = "$item[2]" }
| '(WP$' text ')'
{ $return = "$item[2]" }
| '(WRB' text ')'
{ $return = "$item[2]" }
| punct
{ $return = "$item[1]" }
| unknownphrasetag
{ $return = "$item[1]" }
| unknownwordtag
{ $return = "$item[1]" }
};
while (<>) {
chomp;
print $parser->sentence( $_ ), "\n";
}