%{#include "rc.h"%} /* operator priorities -- lowest first */%left IF WHILE FOR SWITCH ')' NOT%left ANDAND OROR%left BANG SUBSHELL%left PIPE%left '^'%right '$' COUNT '"'%left SUB %term FOR IN WHILE IF NOT TWIDDLE BANG SUBSHELL SWITCH FN%term WORD REDIR DUP PIPE SUB%term SIMPLE ARGLIST WORDS BRACE PAREN PCMD PIPEFD /* not used in syntax */  %union{	Tree *tree;}; %type<tree> line paren brace body cmdsa cmdsan assign epilog redir%type<tree> cmd simple first word comword keyword words%type<tree> NOT FOR IN WHILE IF TWIDDLE BANG SUBSHELL SWITCH FN%type<tree> WORD REDIR DUP PIPE %% rc:				{ return 1;}|	line '\n'		{return !compile($1);}line:	cmd|	cmdsa line		{$$=tree2(';', $1, $2);}body:	cmd|	cmdsan body		{$$=tree2(';', $1, $2);}cmdsa:	cmd ';'|	cmd '&'			{$$=tree1('&', $1);}cmdsan:	cmdsa|	cmd '\n'brace:	'{' body '}'		{$$=tree1(BRACE, $2);}paren:	'(' body ')'		{$$=tree1(PCMD, $2);}assign:	first '=' word		{$$=tree2('=', $1, $3);}epilog:				{$$=0;}|	redir epilog		{$$=mung2($1, $1->child[0], $2);}redir:	REDIR word		{$$=mung1($1, $1->rtype==HERE?heredoc($2):$2);}|	DUPcmd:				{$$=0;}|	brace epilog		{$$=epimung($1, $2);}|	IF paren {skipnl();} cmd				{$$=mung2($1, $2, $4);}|	IF NOT {skipnl();} cmd	{$$=mung1($2, $4);}|	FOR '(' word IN words ')' {skipnl();} cmd				{$$=mung3($1, $3, tree1(PAREN, $5), $8);}|	FOR '(' word ')' {skipnl();} cmd				{$$=mung3($1, $3, 0, $6);}|	WHILE paren {skipnl();} cmd				{$$=mung2($1, $2, $4);}|	SWITCH word {skipnl();} brace				{$$=tree2(SWITCH, $2, $4);}|	simple			{$$=simplemung($1);}|	TWIDDLE word words	{$$=mung2($1, $2, $3);}|	cmd ANDAND cmd		{$$=tree2(ANDAND, $1, $3);}|	cmd OROR cmd		{$$=tree2(OROR, $1, $3);}|	cmd PIPE cmd		{$$=mung2($2, $1, $3);}|	redir cmd  %prec BANG	{$$=mung2($1, $1->child[0], $2);}|	assign cmd %prec BANG	{$$=mung3($1, $1->child[0], $1->child[1], $2);}|	BANG cmd		{$$=mung1($1, $2);}|	SUBSHELL cmd		{$$=mung1($1, $2);}|	FN words brace		{$$=tree2(FN, $2, $3);}|	FN words		{$$=tree1(FN, $2);}simple:	first|	simple word		{$$=tree2(ARGLIST, $1, $2);}|	simple redir		{$$=tree2(ARGLIST, $1, $2);}first:	comword	|	first '^' word		{$$=tree2('^', $1, $3);}word:	keyword			{$1->type=WORD;}|	comword|	word '^' word		{$$=tree2('^', $1, $3);}comword: '$' word		{$$=tree1('$', $2);}|	'$' word SUB words ')'	{$$=tree2(SUB, $2, $4);}|	'"' word		{$$=tree1('"', $2);}|	COUNT word		{$$=tree1(COUNT, $2);}|	WORD|	'`' brace		{$$=tree1('`', $2);}|	'(' words ')'		{$$=tree1(PAREN, $2);}/* |	REDIR brace		{$$=mung1($1, $2); $$->type=PIPEFD;} */ keyword: FOR|IN|WHILE|IF|NOT|TWIDDLE|BANG|SUBSHELL|SWITCH|FNwords:				{$$=0;}|	words word		{$$=tree2(WORDS, $1, $2);}