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/* -*-c-*- ---------------- xmix_parser.h :
* Declarations for the implementation of mix_parser_t
* ------------------------------------------------------------------
* Copyright (C) 2000 jose antonio ortega ruiz <jaortega@acm.org>
*
* This program 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#ifndef XMIX_PARSER_H
#define XMIX_PARSER_H
#include "mix_ins.h"
#include "mix_file.h"
#include "mix_symbol_table.h"
#include "mix_parser.h"
/* mix_parser_t definition */
struct mix_parser_t
{
mix_file_t *in_file; /* the source file to be compiled */
mix_symbol_table_t *symbol_table;
mix_symbol_table_t *ls_table; /* literal strings symbols */
guint cur_ls; /* current literal string symbol */
GHashTable *future_refs; /* a map from symbol name to list of addresses */
GTree *ins_table; /* a table of compiled instructions */
mix_address_t loc_count; /* current memory location during compilation */
mix_parser_err_t status; /* outcome of compilation */
guint err_line; /* line of the last error */
guint err_count; /* no. of errors during compilation */
guint warn_count; /* no. of warnings during compilation */
mix_address_t start; /* start address of the compiled code */
};
/* each node of the ins_table stores a mix_word_t with the instruction
and a source code line (for debugging and listing)
*/
typedef struct ins_node_
{
mix_word_t ins;
guint lineno;
} ins_node_;
/* functions to manipulate mix_parser_t during compilation */
/* symbol table */
/* Define a new symbol with given value
* and update previously set refs to this symbol
*/
extern mix_parser_err_t
mix_parser_define_symbol_value (mix_parser_t *parser, const gchar *name,
mix_word_t value);
/* Define a new symbol with value equal to the current loc_count
* and update previously set refs to this symbol
*/
extern mix_parser_err_t
mix_parser_define_symbol_here(mix_parser_t *parser, const gchar *name);
/* Set a reference to future symbol here */
extern void
mix_parser_set_future_ref(mix_parser_t *parser, const gchar *name);
/* Redefine the value of a local symbol as the current loc_count */
extern void
mix_parser_manage_local_symbol(mix_parser_t *parser, const gchar *name);
/* Literal strings symbols */
extern void
mix_parser_define_ls (mix_parser_t *parser, mix_word_t value);
/* Compilation */
/* Add instruction with address the current loc_count */
extern void
mix_parser_add_ins(mix_parser_t *parser, const mix_ins_t *new_ins,
guint lineno);
extern void
mix_parser_add_raw(mix_parser_t *parser, mix_word_t word, guint lineno);
/* Error handling */
extern void
mix_parser_log_error(mix_parser_t *parser, mix_parser_err_t error,
gint lineno, const gchar *comment, gboolean warn);
#endif /* XMIX_PARSER_H */
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