%token	FIRSTTOKEN	/*must be first*/%token	FINAL FATAL%token	LT LE GT GE EQ NE%token	MATCH NOTMATCH%token	APPEND%token	ADD MINUS MULT DIVIDE MOD UMINUS %token	ASSIGN ADDEQ SUBEQ MULTEQ DIVEQ MODEQ%token	JUMP%token	XBEGIN XEND%token	NL%token	PRINT PRINTF SPRINTF SPLIT%token	IF ELSE WHILE FOR IN NEXT EXIT BREAK CONTINUE%token	PROGRAM PASTAT PASTAT2%right	ASGNOP%left	BOR%left	AND%left	NOT%left	NUMBER VAR ARRAY FNCN SUBSTR LSUBSTR INDEX%nonassoc RELOP MATCHOP%left	OR%left	STRING  DOT CCL NCCL CHAR%left	'(' '^' '$'%left	CAT%left	'+' '-'%left	'*' '/' '%'%left	STAR PLUS QUEST%left	POSTINCR PREINCR POSTDECR PREDECR INCR DECR%left	FIELD INDIRECT%token	LASTTOKEN	/* has to be last */%{#include "awk.def"#ifndef	DEBUG	#	define	PUTS(x)#endif%}%%program:	  begin pa_stats end	{ if (errorflag==0) winner = stat3(PROGRAM, $1, $2, $3); }	| error			{ yyclearin; yyerror("bailing out"); }	;begin:	  XBEGIN '{' stat_list '}'	{ PUTS("XBEGIN list"); $$ = $3; }	| begin NL	| 	{ PUTS("empty XBEGIN"); $$ = nullstat; }	;end:	  XEND '{' stat_list '}'	{ PUTS("XEND list"); $$ = $3; }	| end NL	|	{ PUTS("empty END"); $$ = nullstat; }	;compound_conditional:	  conditional BOR conditional	{ PUTS("cond||cond"); $$ = op2(BOR, $1, $3); }	| conditional AND conditional	{ PUTS("cond&&cond"); $$ = op2(AND, $1, $3); }	| NOT conditional		{ PUTS("!cond"); $$ = op1(NOT, $2); }	| '(' compound_conditional ')'	{ $$ = $2; }	;compound_pattern:	  pattern BOR pattern	{ PUTS("pat||pat"); $$ = op2(BOR, $1, $3); }	| pattern AND pattern	{ PUTS("pat&&pat"); $$ = op2(AND, $1, $3); }	| NOT pattern		{ PUTS("!pat"); $$ = op1(NOT, $2); }	| '(' compound_pattern ')'	{ $$ = $2; }	;conditional:	  expr	{ PUTS("expr"); $$ = op2(NE, $1, valtonode(lookup("0", symtab), CCON)); }	| rel_expr		{ PUTS("relexpr"); }	| lex_expr		{ PUTS("lexexpr"); }	| compound_conditional	{ PUTS("compcond"); }	;else:	  ELSE optNL	{ PUTS("else"); }	;field:	  FIELD		{ PUTS("field"); $$ = valtonode($1, CFLD); }	| INDIRECT term { PUTS("ind field"); $$ = op1(INDIRECT, $2); }	;if:	  IF '(' conditional ')' optNL	{ PUTS("if(cond)"); $$ = $3; }	;lex_expr:	  expr MATCHOP regular_expr	{ PUTS("expr~re"); $$ = op2($2, $1, makedfa($3)); }	| '(' lex_expr ')'	{ PUTS("(lex_expr)"); $$ = $2; }	;var:	  NUMBER	{PUTS("number"); $$ = valtonode($1, CCON); }	| STRING 	{ PUTS("string"); $$ = valtonode($1, CCON); }	| VAR		{ PUTS("var"); $$ = valtonode($1, CVAR); }	| VAR '[' expr ']'	{ PUTS("array[]"); $$ = op2(ARRAY, $1, $3); }	| field	;term:	  var	| FNCN		{ PUTS("func");			$$ = op2(FNCN, $1, valtonode(lookup("$record", symtab), CFLD));			}	| FNCN '(' ')'	{ PUTS("func()"); 			$$ = op2(FNCN, $1, valtonode(lookup("$record", symtab), CFLD));			}	| FNCN '(' expr ')'	{ PUTS("func(expr)"); $$ = op2(FNCN, $1, $3); }	| SPRINTF print_list	{ PUTS("sprintf"); $$ = op1($1, $2); }	| SUBSTR '(' expr ',' expr ',' expr ')'			{ PUTS("substr(e,e,e)"); $$ = op3(SUBSTR, $3, $5, $7); }	| SUBSTR '(' expr ',' expr ')'			{ PUTS("substr(e,e,e)"); $$ = op3(SUBSTR, $3, $5, nullstat); }	| SPLIT '(' expr ',' VAR ',' expr ')'			{ PUTS("split(e,e,e)"); $$ = op3(SPLIT, $3, $5, $7); }	| SPLIT '(' expr ',' VAR ')'			{ PUTS("split(e,e,e)"); $$ = op3(SPLIT, $3, $5, nullstat); }	| INDEX '(' expr ',' expr ')'			{ PUTS("index(e,e)"); $$ = op2(INDEX, $3, $5); }	| '(' expr ')'			{PUTS("(expr)");  $$ = $2; }	| term '+' term			{ PUTS("t+t"); $$ = op2(ADD, $1, $3); }	| term '-' term			{ PUTS("t-t"); $$ = op2(MINUS, $1, $3); }	| term '*' term			{ PUTS("t*t"); $$ = op2(MULT, $1, $3); }	| term '/' term			{ PUTS("t/t"); $$ = op2(DIVIDE, $1, $3); }	| term '%' term			{ PUTS("t%t"); $$ = op2(MOD, $1, $3); }	| '-' term %prec QUEST		{ PUTS("-term"); $$ = op1(UMINUS, $2); }	| '+' term %prec QUEST		{ PUTS("+term"); $$ = $2; }	| INCR var	{ PUTS("++var"); $$ = op1(PREINCR, $2); }	| DECR var	{ PUTS("--var"); $$ = op1(PREDECR, $2); }	| var INCR	{ PUTS("var++"); $$= op1(POSTINCR, $1); }	| var DECR	{ PUTS("var--"); $$= op1(POSTDECR, $1); }	;expr:	  term		{ PUTS("term"); }	| expr term	{ PUTS("expr term"); $$ = op2(CAT, $1, $2); }	| var ASGNOP expr	{ PUTS("var=expr"); $$ = stat2($2, $1, $3); }	;optNL:	  NL	|	;pa_stat:	  pattern	{ PUTS("pattern"); $$ = stat2(PASTAT, $1, genprint()); }	| pattern '{' stat_list '}'	{ PUTS("pattern {...}"); $$ = stat2(PASTAT, $1, $3); }	| pattern ',' pattern		{ PUTS("srch,srch"); $$ = pa2stat($1, $3, genprint()); }	| pattern ',' pattern '{' stat_list '}'						{ PUTS("srch, srch {...}"); $$ = pa2stat($1, $3, $5); }	| '{' stat_list '}'	{ PUTS("null pattern {...}"); $$ = stat2(PASTAT, nullstat, $2); }	;pa_stats:	  pa_stats pa_stat st	{ PUTS("pa_stats pa_stat"); $$ = linkum($1, $2); }	|	{ PUTS("null pa_stat"); $$ = nullstat; }	| pa_stats pa_stat	{PUTS("pa_stats pa_stat"); $$ = linkum($1, $2); }	;pattern:	  regular_expr	{ PUTS("regex");		$$ = op2(MATCH, valtonode(lookup("$record", symtab), CFLD), makedfa($1));		}	| rel_expr	{ PUTS("relexpr"); }	| lex_expr	{ PUTS("lexexpr"); }	| compound_pattern	{ PUTS("comp pat"); }	;print_list:	  expr	{ PUTS("expr"); }	| pe_list	{ PUTS("pe_list"); }	|		{ PUTS("null print_list"); $$ = valtonode(lookup("$record", symtab), CFLD); }	;pe_list:	  expr ',' expr	{$$ = linkum($1, $3); }	| pe_list ',' expr	{$$ = linkum($1, $3); }	| '(' pe_list ')'		{$$ = $2; }	;redir:	  RELOP	| '|'	;regular_expr:	  '/'	{ startreg(); }	  r '/'		{ PUTS("/r/"); $$ = $3; }	;r:	  CHAR		{ PUTS("regex CHAR"); $$ = op2(CHAR, (node *) 0, $1); }	| DOT		{ PUTS("regex DOT"); $$ = op2(DOT, (node *) 0, (node *) 0); }	| CCL		{ PUTS("regex CCL"); $$ = op2(CCL, (node *) 0, cclenter($1)); }	| NCCL		{ PUTS("regex NCCL"); $$ = op2(NCCL, (node *) 0, cclenter($1)); }	| '^'		{ PUTS("regex ^"); $$ = op2(CHAR, (node *) 0, HAT); }	| '$'		{ PUTS("regex $"); $$ = op2(CHAR, (node *) 0 ,(node *) 0); }	| r OR r	{ PUTS("regex OR"); $$ = op2(OR, $1, $3); }	| r r   %prec CAT			{ PUTS("regex CAT"); $$ = op2(CAT, $1, $2); }	| r STAR	{ PUTS("regex STAR"); $$ = op2(STAR, $1, (node *) 0); }	| r PLUS	{ PUTS("regex PLUS"); $$ = op2(PLUS, $1, (node *) 0); }	| r QUEST	{ PUTS("regex QUEST"); $$ = op2(QUEST, $1, (node *) 0); }	| '(' r ')'	{ PUTS("(regex)"); $$ = $2; }	;rel_expr:	  expr RELOP expr		{ PUTS("expr relop expr"); $$ = op2($2, $1, $3); }	| '(' rel_expr ')'		{ PUTS("(relexpr)"); $$ = $2; }	;st:	  NL	| ';'	;simple_stat:	  PRINT print_list redir expr		{ PUTS("print>stat"); $$ = stat3($1, $2, $3, $4); }	| PRINT print_list			{ PUTS("print list"); $$ = stat3($1, $2, nullstat, nullstat); }	| PRINTF print_list redir expr		{ PUTS("printf>stat"); $$ = stat3($1, $2, $3, $4); }	| PRINTF print_list			{ PUTS("printf list"); $$ = stat3($1, $2, nullstat, nullstat); }	| expr	{ PUTS("expr"); $$ = exptostat($1); }	|		{ PUTS("null simple statement"); $$ = nullstat; }	| error		{ yyclearin; yyerror("illegal statement"); }	;statement:	  simple_stat st	{ PUTS("simple stat"); }	| if statement		{ PUTS("if stat"); $$ = stat3(IF, $1, $2, nullstat); }	| if statement else statement		{ PUTS("if-else stat"); $$ = stat3(IF, $1, $2, $4); }	| while statement	{ PUTS("while stat"); $$ = stat2(WHILE, $1, $2); }	| for			{ PUTS("for stat"); }	| NEXT st		{ PUTS("next"); $$ = genjump(NEXT); }	| EXIT st		{ PUTS("exit"); $$ = genjump(EXIT); }	| BREAK st		{ PUTS("break"); $$ = genjump(BREAK); }	| CONTINUE st		{ PUTS("continue"); $$ = genjump(CONTINUE); }	| '{' stat_list '}'	{ PUTS("{statlist}"); $$ = $2; }	;stat_list:	  stat_list statement	{ PUTS("stat_list stat"); $$ = linkum($1, $2); }	|			{ PUTS("null stat list"); $$ = nullstat; }	;while:	  WHILE '(' conditional ')' optNL	{ PUTS("while(cond)"); $$ = $3; }	;for:	  FOR '(' simple_stat ';' conditional ';' simple_stat ')' optNL statement		{ PUTS("for(e;e;e)"); $$ = stat4(FOR, $3, $5, $7, $10); }	| FOR '(' simple_stat ';'  ';' simple_stat ')' optNL statement		{ PUTS("for(e;e;e)"); $$ = stat4(FOR, $3, nullstat, $6, $9); }	| FOR '(' VAR IN VAR ')' optNL statement		{ PUTS("for(v in v)"); $$ = stat3(IN, $3, $5, $8); }	;%%