%{
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include "symtable.h"
	#include "chelper.h"
	#include "tree.h"

	#define MAX(A,B) (A > B ? A : B)
%}

%start Input
%token STRUCT END METHOD VAR IF THEN ELSE WHILE DO RETURN NOT OR THIS IDENT NUM ASSIGN

@macro xxputsin(xx,)
	@i xx = @Statement.sin@;
@end

@macro statinout()
	@i @Statement.sout@ = @Statement.sin@;
	/* das
	 *> xxputsin(@Statement.sout@,)
	 * geht nicht, weil verschachtelte macros deaktiviert sind */
@end

@macro lblcountinout()
	@i @Statement.lblcnt_out@ = @Statement.lblcnt_in@;
@end

@macro varsinout()
	@i @Statement.vars_out@ = @Statement.vars_in@;
@end

/* beschreibung der attribute
 * s: symboltabelle
 * f: symboltabelle fuer quirks mit structur und parameter
 * gparamges: anzahl der parameter in einer methode
 * parms: parametercounter
 * node: baum fuer iburg
 * sin: symboltabelle fuer statement ("eingabe")
 * sout: symboltabelle die aus einem statement wieder rauskommt ("ausgabe")
 */
@autoinh s gparamges vars_in
@autosyn node imm call

@attributes { char *name; } IDENT
@attributes { long val; } NUM
@attributes { struct symbol *f; int paramges; int parms; } Parms
@attributes { struct symbol *f; } Program Structdef;
@attributes { struct symbol *f; int offsetcount; } FeldID
@attributes { struct symbol *s; } Methoddef
@attributes { struct symbol *s; int gparamges; int vars_in; int cnt; int paramcount; struct treenode *node; } Exprs
@attributes { struct symbol *s; int gparamges; int lblcnt_in; int lblcnt_out; int vars_in; int vars_out; int call; } Statseq
@attributes { struct symbol *s; int gparamges; int lblcnt_in; int lblcnt_out; int reallblcnt; int vars_in; int vars_out; int call; } Elsestat
@attributes { struct symbol *s; int gparamges; int vars_in; struct treenode *node; short imm; int call; } Expr Minusterm Multerm Orterm Feld Term
@attributes { struct symbol *s; int gparamges; int vars_in; struct treenode *node; } Lexpr
@attributes { struct symbol *sin; int gparamges; struct symbol *sout; struct treenode *node; int vars_in; int vars_out; int lblcnt_in; int lblcnt_out; int call; } Statement

@traversal @postorder c
@traversal @preorder reg
@traversal @preorder gen

%%
Input:
	  Program
	  @{
	    @i @Program.f@ = tab_new();
	    @gen printf("\t.section\t\".text\"\n");
	  @}
	;

Program:
	  Methoddef ';' Program
	  @{
	    @i @Methoddef.s@ = @Program.0.f@;
	    @i @Program.1.f@ = @Program.0.f@;
	  @}

	| Structdef ';' Program
	  @{
	    @i @Program.1.f@ = tab_merge(@Program.0.f@, @Structdef.f@, 1);
	  @}
	|
	;

Methoddef:
	  METHOD IDENT '(' Parms ')' Statseq END
	  @{
	    @i @Parms.parms@ = 1;
	    @i @Statseq.s@ = tab_merge(@Methoddef.s@, @Parms.f@, 0);
		@i @Statseq.vars_in@ = 0;
		@i @Statseq.gparamges@ = @Parms.paramges@;
		@i @Statseq.lblcnt_in@ = 0;
	    @gen func_header(@IDENT.name@, @Statseq.vars_out@, @Parms.paramges@, @Statseq.call@);
	  @}
	;

Structdef:
	  STRUCT FeldID END
	  @{
	    @i @Structdef.f@ = @FeldID.f@;
		@i @FeldID.offsetcount@ = 0;
	  @}
	;

Parms:
	  /* lokale Vars werden in Statement in die tabelle eingefuegt */
	  IDENT Parms
	  @{
	    @i @Parms.1.parms@ = @Parms.0.parms@ + 1;
		@i @Parms.0.paramges@ = @Parms.1.paramges@;
	    @i @Parms.0.f@ = tab_add_symbol(@Parms.1.f@, @IDENT.name@, S_PARM, 1, @Parms.parms@, -1);
	  @}

	|
	  @{
	    @i @Parms.f@ = tab_new();
		@i @Parms.paramges@ = @Parms.parms@;
	  @}
	;

FeldID:
	  IDENT FeldID
	  @{
	    @i @FeldID.1.offsetcount@ = @FeldID.0.offsetcount@ + 1;
	    @i @FeldID.0.f@ = tab_add_symbol(@FeldID.1.f@, @IDENT.name@, S_FIELD, 1, -1, @FeldID.0.offsetcount@);
	  @}

	|
	  @{
	    @i @FeldID.f@ = tab_new();
	  @}
	;

Statseq:
	  Statement ';' Statseq
	  @{
		@i @Statement.sin@ = @Statseq.0.s@;
		@i @Statement.lblcnt_in@ = @Statseq.0.lblcnt_in@;

		@i @Statseq.1.s@ = @Statement.sout@;
		@i @Statseq.1.lblcnt_in@ = @Statement.lblcnt_out@;
		@i @Statseq.1.gparamges@ = @Statseq.0.gparamges@;

		@i @Statement.vars_in@ = @Statseq.0.vars_in@;
		@i @Statseq.1.vars_in@ = @Statement.vars_out@;

		@i @Statseq.0.lblcnt_out@ = @Statseq.1.lblcnt_out@;
		@i @Statseq.0.vars_out@ = @Statseq.1.vars_out@;

		@i @Statseq.0.call@ = @Statement.call@ || @Statseq.1.call@;
	  @}

	|
	  @{
	  	@i @Statseq.0.lblcnt_out@ = @Statseq.0.lblcnt_in@;
		@i @Statseq.0.vars_out@ = @Statseq.0.vars_in@;
		@i @Statseq.0.call@ = 0;
	  @}
	;

Statement:
	  Lexpr ASSIGN Expr
	  @{
	  	statinout()
		lblcountinout()
		varsinout()
		xxputsin(@Lexpr.s@,)
		xxputsin(@Expr.s@,)
	    @i @Statement.node@ = new_node(O_ASSIGN, @Expr.node@, @Lexpr.node@);
		@reg @Statement.node@->reg = @Expr.node@->reg = next_reg((char *)NULL, @Expr.gparamges@);
		@reg @Lexpr.node@->reg = next_reg(@Expr.node@->reg, @Expr.gparamges@);

		@gen write_tree(@Statement.node@, 0); burm_label(@Statement.node@); burm_reduce(@Statement.node@, 1);
	  @}

	| VAR IDENT ASSIGN Expr
	  @{
	  	/* tab_clone ist hier noetig, vgl. folgendes statement
		 * > var x := x - 1; */
		@i @Statement.sout@ = tab_add_symbol(tab_clone(@Statement.sin@), @IDENT.name@, S_VAR, 1, @Statement.gparamges@ + @Statement.vars_in@, -1);
		lblcountinout()

		@i @Statement.vars_out@ = @Statement.vars_in@ + 1;

		xxputsin(@Expr.s@,)

		@i @Statement.node@ = new_node(O_ASSIGN, @Expr.node@, new_param(O_ID, @IDENT.name@, TREENULL, TREENULL, @Statement.gparamges@ + @Statement.vars_in@));
		@reg @Statement.node@->reg = @Expr.node@->reg = next_reg((char *)NULL, @Expr.gparamges@);

		@gen write_tree(@Statement.node@, 0); burm_label(@Statement.node@); burm_reduce(@Statement.node@, 1);
	  @}

	| Expr
	  @{
	  	statinout()
		varsinout()
		lblcountinout()
		xxputsin(@Expr.s@,)
		@i @Statement.node@ = new_node(O_EXPR, @Expr.node@, TREENULL);
		@reg @Statement.node@->reg = @Expr.node@->reg = next_reg((char *)NULL, @Expr.gparamges@);

		@gen write_tree(@Statement.node@, 0); burm_label(@Statement.node@); burm_reduce(@Statement.node@, 1);
	  @}

	| IF Expr THEN Statseq END
	  @{
	  	statinout()
		@i @Statseq.lblcnt_in@ =  @Statement.lblcnt_in@ + 1;
		@i @Statement.lblcnt_out@ = @Statseq.lblcnt_out@;

		@i @Statseq.vars_in@ = @Statement.vars_in@;
		@i @Statement.vars_out@ = @Statseq.vars_out@;

		@i @Statement.call@ = @Expr.call@ || @Statseq.call@;

		xxputsin(@Expr.s@,)
		xxputsin(@Statseq.s@,)

		@i @Statement.node@ = new_node(O_IF, @Expr.node@, TREENULL);

		@reg @Statement.node@->reg = @Expr.node@->reg = next_reg((char *)NULL, @Expr.gparamges@);
		@gen {
			printf(".%s_ifstart_%d:\n", get_func_name(), @Statement.lblcnt_in@);
			write_tree(@Statement.node@, 0); burm_label(@Statement.node@); burm_reduce(@Statement.node@, 1);
			printf("\tbeq 0,.%s_ifend_%d\n", get_func_name(), @Statement.lblcnt_in@);
		}
		@gen @revorder(1) printf(".%s_ifend_%d:\n", get_func_name(), @Statement.lblcnt_in@);
	  @}

	| IF Expr THEN Statseq Elsestat END
	  @{
	  	statinout()
		@i @Statseq.0.lblcnt_in@ = @Statement.lblcnt_in@ + 1;
		@i @Elsestat.lblcnt_in@ = @Statseq.lblcnt_out@;
		@i @Statement.lblcnt_out@ = @Elsestat.lblcnt_out@;

		/* im Elsestat muss noch ein label numeriert werden */
		@i @Elsestat.reallblcnt@ = @Statement.lblcnt_in@;

		@i @Statseq.vars_in@ = @Statement.vars_in@;
		@i @Elsestat.vars_in@ = @Statement.vars_in@;
		@i @Statement.vars_out@ = MAX(@Statseq.vars_out@, @Elsestat.vars_out@);

		@i @Statement.call@ = @Expr.call@ || @Statseq.call@ || @Elsestat.call@;

		xxputsin(@Expr.s@,)
		xxputsin(@Statseq.0.s@,)
		xxputsin(@Elsestat.s@,)

		@i @Statement.node@ = new_node(O_IF, @Expr.node@, TREENULL);

		@reg @Statement.node@->reg = @Expr.node@->reg = next_reg((char *)NULL, @Expr.gparamges@);
		@gen {
			printf(".%s_ifstart_%d:\n", get_func_name(), @Statement.lblcnt_in@);
			write_tree(@Statement.node@, 0); burm_label(@Statement.node@); burm_reduce(@Statement.node@, 1);
			printf("\tbeq 0,.%s_ifelse_%d\n", get_func_name(), @Statement.lblcnt_in@);
		}
		@gen @revorder(1) printf(".%s_ifend_%d:\n", get_func_name(), @Statement.lblcnt_in@);
	  @}

	| WHILE Expr DO Statseq END
	  @{
	  	statinout()
		@i @Statseq.lblcnt_in@ =  @Statement.lblcnt_in@ + 1;
		@i @Statement.lblcnt_out@ = @Statseq.lblcnt_out@;

		@i @Statseq.vars_in@ = @Statement.vars_in@;
		@i @Statement.vars_out@ = @Statseq.vars_out@;

		@i @Statement.call@ = @Expr.call@ || @Statseq.call@;

		xxputsin(@Expr.s@,)
		xxputsin(@Statseq.s@,)

		@i @Statement.node@ = new_node(O_IF, @Expr.node@, TREENULL);

		@reg @Statement.node@->reg = @Expr.node@->reg = next_reg((char *)NULL, @Expr.gparamges@);
		@gen {
			printf(".%s_whilestart_%d:\n", get_func_name(), @Statement.lblcnt_in@);
			write_tree(@Statement.node@, 0); burm_label(@Statement.node@); burm_reduce(@Statement.node@, 1);
			printf("\tbeq 0,.%s_whileend_%d\n", get_func_name(), @Statement.lblcnt_in@);
		}
		@gen @revorder(1) printf("\tb .%s_whilestart_%d\n.%s_whileend_%d:\n", get_func_name(), @Statement.lblcnt_in@, get_func_name(), @Statement.lblcnt_in@);
	  @}

	| RETURN Expr
	  @{
	  	statinout()
		lblcountinout()
		varsinout()
		xxputsin(@Expr.s@,)

		@i @Statement.node@ = new_node(O_RET, @Expr.node@, TREENULL);
		@reg @Statement.node@->reg = @Expr.node@->reg = next_reg((char *)NULL, @Expr.gparamges@);

		@gen write_tree(@Statement.node@, 0); burm_label(@Statement.node@); burm_reduce(@Statement.node@, 1); func_footer();
	  @}
	;

Elsestat:
	  ELSE Statseq
	  @{
		@i @Statseq.lblcnt_in@ =  @Elsestat.lblcnt_in@;
		@i @Elsestat.lblcnt_out@ =  @Statseq.lblcnt_out@;

		@i @Statseq.vars_in@ = @Elsestat.vars_in@;
		@i @Elsestat.vars_out@ = @Statseq.vars_out@;

		@gen printf("\tb .%s_ifend_%d\n.%s_ifelse_%d:\n", get_func_name(), @Elsestat.reallblcnt@, get_func_name(), @Elsestat.reallblcnt@);
	  @}

Lexpr:
	  IDENT
	  @{
	    @c check(@Lexpr.s@, @IDENT.name@, S_VAR|S_PARM);

		/* TODO: selbe Code wie bei Term/IDENT -- schoener machen! */
	    @i {
			@Lexpr.node@ = TREENULL;
			if(tab_lookup(@Lexpr.s@, @IDENT.name@, S_VAR|S_PARM) == SYMNULL) {
				/* es handelt sich um ein feldzugriff auf this */
				@Lexpr.node@ = new_field(@IDENT.name@, new_param(O_ID, strdup("this"), TREENULL, TREENULL, 0), TREENULL, tab_lookup(@Lexpr.s@, @IDENT.name@, S_FIELD) == SYMNULL ? -1 : tab_lookup(@Lexpr.s@, @IDENT.name@, S_FIELD)->soffset);
			} else { /* param oder var */
				int tmp = tab_lookup(@Lexpr.s@, @IDENT.name@, S_VAR|S_PARM) == SYMNULL ? -1 : tab_lookup(@Lexpr.s@, @IDENT.name@, S_VAR|S_PARM)->param_index;
				@Lexpr.node@ = new_param(O_ID, @IDENT.name@, TREENULL, TREENULL, tmp);
			}
		}

		@reg if(tab_lookup(@Lexpr.s@, @IDENT.name@, S_VAR|S_PARM) == SYMNULL) {
			/* TODO: kein schoener hack? */
			@Lexpr.node@->kids[0]->reg = @Lexpr.node@->reg;
		}
	  @}

	| Feld
	;

Feld: Term '.' IDENT
	  @{
	    @c check(@Feld.s@, @IDENT.name@, S_FIELD);
	    @i @Feld.node@ = new_field(@IDENT.name@, @Term.node@, TREENULL, tab_lookup(@Feld.s@, @IDENT.name@, S_FIELD) == SYMNULL ? -1 : tab_lookup(@Feld.s@, @IDENT.name@, S_FIELD)->soffset);

		@reg @Term.node@->reg = next_reg(@Feld.node@->reg, @Term.gparamges@);
	  @}
	;

Expr:
	  Term
	  @{
	    @reg @Term.node@->reg = @Expr.node@->reg;
	  @}

	| NOT Term
	  @{
		@i @Expr.node@ = new_node(O_BOOL, new_node(O_EQ, @Term.node@, new_node(O_NULL, TREENULL, TREENULL)), TREENULL);

		@reg @Term.node@->reg = @Expr.node@->kids[0]->reg = @Expr.node@->reg;
	  @}

	| Term Minusterm
	  @{
	    @i @Expr.node@ = new_node(O_SUB, @Term.node@, @Minusterm.node@);
		@i @Expr.imm@ = @Term.imm@ && @Minusterm.imm@;
		@i @Expr.call@ = @Term.call@ || @Minusterm.call@;

		@reg {
			if(!(@Expr.node@->kids[0] == TREENULL && @Expr.node@->kids[1] == TREENULL)) {
				@Term.node@->reg = @Expr.node@->reg;
				if(@Minusterm.imm@) {
					@Minusterm.node@->reg = @Expr.node@->reg;
				} else {
					@Minusterm.node@->reg = next_reg(@Term.node@->reg, @Expr.gparamges@);
				}
			}
		}
	  @}

	| Term Multerm
	  @{
	    @i @Expr.node@ = new_node(O_MUL, @Term.node@, @Multerm.node@);
		@i @Expr.imm@ = @Term.imm@ && @Multerm.imm@;
		@i @Expr.call@ = @Term.call@ || @Multerm.call@;

		@reg {
			@Term.node@->reg = next_reg(@Expr.node@->reg, @Expr.gparamges@);
			if(@Term.imm@) {
				@Multerm.node@->reg = @Expr.node@->reg;
			} else {
				@Multerm.node@->reg = next_reg(@Term.node@->reg, @Expr.gparamges@);
			}
		}
	  @}

	| Term Orterm
	  @{
	    @i @Expr.node@ = new_node(O_OR, @Term.node@, @Orterm.node@);
		@i @Expr.imm@ = @Term.imm@ && @Orterm.imm@;
		@i @Expr.call@ = @Term.call@ || @Orterm.call@;

		@reg {
			@Term.node@->reg = @Expr.node@->reg;
			@Orterm.node@->reg = next_reg(@Term.node@->reg, @Expr.gparamges@);
		}
	  @}

	| Term '<' Term
	  @{
	    @i @Expr.node@ = new_node(O_BOOL, new_node(O_LESS, @Term.0.node@, @Term.1.node@), TREENULL);
		@i @Expr.imm@ = @Term.0.imm@ && @Term.1.imm@;
		@i @Expr.call@ = @Term.0.call@ || @Term.1.call@;

		@reg {
			@Term.0.node@->reg = @Expr.node@->kids[0]->reg = @Expr.node@->reg;
			@Term.1.node@->reg = next_reg(@Term.0.node@->reg, @Expr.gparamges@);
		}
	  @}

	| Term '=' Term
	  @{
	    @i @Expr.node@ = new_node(O_BOOL, new_node(O_EQ, @Term.0.node@, @Term.1.node@), TREENULL);
		@i @Expr.imm@ = @Term.0.imm@ && @Term.1.imm@;
		@i @Expr.call@ = @Term.0.call@ || @Term.1.call@;

		@reg {
			@Term.0.node@->reg = @Expr.node@->kids[0]->reg = @Expr.node@->reg;
			@Term.1.node@->reg = next_reg(@Term.0.node@->reg, @Expr.gparamges@);
		}
	  @}
	;

Minusterm:
	  '-' Term Minusterm
	  @{
	    @i @Minusterm.node@ = new_node(O_ADD, @Minusterm.1.node@, @Term.node@);
		@i @Minusterm.0.imm@ = @Term.imm@ && @Minusterm.1.imm@;
		@i @Minusterm.0.call@ = @Term.call@ || @Minusterm.1.call@;

	    @reg {
			@Minusterm.1.node@->reg = @Minusterm.node@->reg;
			if(@Minusterm.1.imm@) {
				@Term.node@->reg = @Minusterm.node@->reg;
			} else {
				@Term.node@->reg = next_reg(@Minusterm.1.node@->reg, @Minusterm.gparamges@);
			}
		}
	  @}

	| '-' Term
	  @{
	    @reg @Term.node@->reg = @Minusterm.node@->reg;
	  @}
	;

Multerm:
	  '*' Term Multerm
	  @{
	    @i @Multerm.node@ = new_node(O_MUL, @Multerm.1.node@, @Term.node@);
		@i @Multerm.0.imm@ = @Term.imm@ && @Multerm.1.imm@;
		@i @Multerm.0.call@ = @Term.call@ || @Multerm.1.call@;

	    @reg {
			@Multerm.1.node@->reg = @Multerm.node@->reg;
			if(@Multerm.1.imm@) {
				@Term.node@->reg = @Multerm.node@->reg;
			} else {
				@Term.node@->reg = next_reg(@Multerm.1.node@->reg, @Multerm.gparamges@);
			}
		}
	  @}

	| '*' Term
	  @{
	    @reg @Term.node@->reg = @Multerm.node@->reg;
	  @}
	;

Orterm:
	  OR Term Orterm
	  @{
	    @i @Orterm.node@ = new_node(O_OR, @Orterm.1.node@, @Term.node@);
		@i @Orterm.0.imm@ = @Term.imm@ && @Orterm.1.imm@;
		@i @Orterm.0.call@ = @Term.call@ || @Orterm.1.call@;

	    @reg {
			@Orterm.1.node@->reg = @Orterm.node@->reg;
			if(@Orterm.1.imm@) {
				@Term.node@->reg = @Orterm.node@->reg;
			} else {
				@Term.node@->reg = next_reg(@Orterm.1.node@->reg, @Orterm.gparamges@);
			}
		}
	  @}
	| OR Term
	  @{
	    @reg @Term.node@->reg = @Orterm.node@->reg;
	  @}

	;

Term:
	  '(' Expr ')'
	  @{
	    @i @Term.node@ = @Expr.node@;
	  @}

	| NUM
	  @{
	    @i @Term.node@ = new_number(@NUM.val@);
		@i @Term.imm@ = 1;
		@i @Term.call@ = 0;
	  @}

	| '-' NUM
	  @{
	    @i @Term.node@ = new_number(-1 * (@NUM.val@));
		@i @Term.imm@ = 1;
		@i @Term.call@ = 0;
	  @}

	| THIS
	  @{
	    @i @Term.node@ = new_param(O_ID, strdup("this"), TREENULL, TREENULL, 0);
		@i @Term.imm@ = 0;
		@i @Term.call@ = 0;
	  @}

	| IDENT
	  @{
	    @c check(@Term.s@, @IDENT.name@, S_VAR|S_PARM);

		@i @Term.imm@ = 0;
		@i @Term.call@ = 0;
	    @i {
			@Term.node@ = TREENULL;
			if(tab_lookup(@Term.s@, @IDENT.name@, S_VAR|S_PARM) == SYMNULL) {
				/* es handelt sich um ein feldzugriff auf this */
				@Term.node@ = new_field(@IDENT.name@, new_param(O_ID, strdup("this"), TREENULL, TREENULL, 0), TREENULL, tab_lookup(@Term.s@, @IDENT.name@, S_FIELD) == SYMNULL ? -1 : tab_lookup(@Term.s@, @IDENT.name@, S_FIELD)->soffset);
			} else { /* param oder var */
				int tmp = tab_lookup(@Term.s@, @IDENT.name@, S_VAR|S_PARM) == SYMNULL ? -1 : tab_lookup(@Term.s@, @IDENT.name@, S_VAR|S_PARM)->param_index;
				@Term.node@ = new_param(O_ID, @IDENT.name@, TREENULL, TREENULL, tmp);
			}
		}

		@reg if(tab_lookup(@Term.s@, @IDENT.name@, S_VAR|S_PARM) == SYMNULL) {
			/* TODO: kein schoener hack? */
			@Term.node@->kids[0]->reg = @Term.node@->reg;
		}
	  @}

	| Feld
	  @{
	    @i @Term.node@ = @Feld.node@;
		@i @Term.imm@ = 0;
	  @}

	| IDENT '(' Exprs ')'
	  @{
	    @i {
			@Term.node@ = new_call(@IDENT.name@, new_arg(@Exprs.node@, new_nothing(), 0) /*this*/,
					TREENULL, @Term.gparamges@, @Term.vars_in@);
			@Term.node@->soffset = MAX(@Exprs.paramcount@, @Term.gparamges@);
		}
		@i @Exprs.cnt@ = 1;
		@i @Term.imm@ = 0;
		@i @Term.call@ = 1;
		@reg @Exprs.node@->reg = @Term.node@->reg;
	  @}

	| Term '.' IDENT '(' Exprs ')'
	  @{
	    @i {
			@Term.node@ = new_call(@IDENT.name@, new_arg(@Exprs.node@, @Term.1.node@, 0) /*this*/,
					TREENULL, @Term.gparamges@, @Term.vars_in@);
			@Term.node@->soffset = MAX(@Exprs.paramcount@, @Term.gparamges@);
		}
		@i @Exprs.cnt@ = 1;
		@i @Term.imm@ = 0;
		@i @Term.call@ = 1;
		@reg @Exprs.node@->reg = @Term.1.node@->reg = @Term.node@->kids[0]->reg = @Term.node@->reg;
	  @}

	;

Exprs:
	  Expr ',' Exprs
	  @{
		@i @Exprs.0.node@ = new_arg(@Expr.0.node@, @Exprs.1.node@, @Exprs.0.cnt@);
		@i @Exprs.0.paramcount@ = @Exprs.1.paramcount@;
		@i @Exprs.1.cnt@ = @Exprs.0.cnt@ + 1;
		@reg @Expr.node@->reg = @Exprs.0.node@->reg; @Exprs.1.node@->reg = next_reg(@Exprs.0.node@->reg, @Exprs.gparamges@);
	  @}
	| Expr
	  @{
		@i @Exprs.0.node@ = new_arg(@Expr.0.node@, new_nothing(), @Exprs.cnt@);
		@i @Exprs.paramcount@ = @Exprs.cnt@ + 1;
		@reg @Expr.node@->reg = @Exprs.0.node@->reg;
	  @}
	|
	  @{
		@i @Exprs.0.node@ = new_nothing();
		@i @Exprs.paramcount@ = @Exprs.cnt@;
	  @}
	;
%%

extern int yylex();
extern int yylineno;

int yyerror(char *error_text)
{
	fprintf(stderr,"Zeile %i: %s\n", yylineno, error_text);
	exit(2);
}

int main(int argc, char **argv)
{
	#if 0
	yydebug=1;
	#endif
	yyparse();
	return 0;
}