/*
pass1.c

Copyright © 2010 William Astle

This file is part of LWTOOLS.

LWTOOLS is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.

You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
*/

#include <config.h>

#include <stdio.h>

#include <lw_alloc.h>

#include "lwasm.h"
#include "input.h"

/*
pass 1: parse the lines
*/
void do_pass1(asmstate_t *as)
{
	char *line;
	line_t *cl;

	for (;;)
	{
		line = input_readline(as);
		if (!line)
			break;
		printf("%s\n", line);
		
		cl = lw_alloc(sizeof(line_t));
		cl -> next = NULL;
		cl -> prev = as -> line_tail;
		cl -> len = -1;
		cl -> insn = -1;
		if (!as -> line_tail)
		{
			as -> line_head = cl;
			cl -> addr = lw_expr_build(lw_expr_type_int, 0);
		}
		else
		{
			lw_expr_t te;
			as -> line_tail -> next = cl;
			te = lw_expr_build(lw_expr_type_special, lwasm_expr_linelen, cl -> prev);
			cl -> addr = lw_expr_build(lw_expr_type_oper, lw_expr_oper_plus, cl -> prev -> addr, te);
			lw_expr_destroy(te);
			lw_expr_simplify(cl -> addr);
		}
		as -> line_tail = cl;

		lw_expr_print(cl -> addr);
		printf("\n");
		// now parse the line
		
		lw_free(line);
	}
}