Updating to reflect the latest work

[zilutils.git] / zilasm / parser.c

diff --git a/zilasm/parser.c b/zilasm/parser.c
deleted file mode 100644 (file)
index 81713cc..0000000
--- a/zilasm/parser.c
+++ /dev/null
@@ -1,175 +0,0 @@
-/*
- * parser.c -- part of ZilUtils/ZilAsm
- *
- * Copyright (C) 2016, 2019 Jason Self <j@jxself.org>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero 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 Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- * SPDX-License-Identifier: AGPL-3.0-or-later
- */
-
-#include <stdio.h>   /* fopen, fgets */
-#include <string.h>  /* strlen */
-
-#include "parser.h"
-#include "directives.h"
-#include "opcodes.h"
-#include "labels.h"
-
-#define iscomment(c)   ((c) == '#')
-#define isbindigit(c)  ((c) == '0' || (c) == '1')
-
-/* !!! TODO !!! */
-#define fatal_error(errmsg)
-#define PC NULL
-
-void checksep(const char *p)
-{
-       if (!*p || iscomment(*p) || isspace(*p)) return;
-       fatal_error("wrong chars");
-}
-
-const char *pass_spaces(const char *p)
-{
-       while(p && isspace(*p)) p++;
-       return (p && *p) ? p : NULL;
-}
-
-const char *pass_alnums(const char *p)
-{
-       while(p && isalnum(*p)) p++;
-       return (p && *p) ? p : NULL;
-}
-
-int tryparse_directive(const char *p)
-{
-       if (*p != '.')
-               return 0;
-       const char *a = p+1;
-       const char *b = pass_alnums(a);
-       checksep(b);
-       Directive_handler f = directive_lookup(a, b - a);
-       if (!f) return 0;
-       return (*f)(b);
-}
-
-int tryparse_assignment(const char *a, const char *b, const char *c)
-{
-       return 0;
-}
-
-int tryparse_label(const char *a, const char *b, const char *c)
-{
-       if (*(c+1) != ':') {
-               symtable_add2(Local_labels, a, b - a, PC);
-       } else if (*(c+2) != ':') {
-               symtable_add2(Global_labels, a, b - a, PC);
-       } else {
-               fatal_error("wrong label type");
-       }
-
-       while (*c++ == ':');
-       if (*c && ((c = pass_spaces(c)) != NULL) && *c)
-               return tryparse_instruction(c);
-       return 1;
-}
-
-int tryparse_name(const char *a)
-{
-       const char *b = pass_alnums(a);
-       const char *c = pass_spaces(b);
-
-       if (!c)        return 0;
-       if (*c == '=') return tryparse_assignment(a, b, c + 1);
-       if (*c == ':') return tryparse_label(a, b, c);
-       return 0;
-}
-
-int tryparse_instruction(const char *a)
-{
-       const char *b = pass_alnums(a);
-       ZOpcode *op = symtable_lookup2(Opcodes, a, b - a);
-       if (!op) return 0;
-       ZOpcode_flags flags = op->flags;
-       /* !!! TODO !!! */
-       return 0;
-}
-
-/*
- *  Line can be one from: Comment, Global label, Local label, Directive, Name=Value, Instruction
- */
-int parse_line(const char *p)
-{
-       for (; *p; p++) {
-               char c = *p;
-               int n;
-               if (isspace(c))                  continue;
-               if (iscomment(c))                return 0;
-               if (n = tryparse_directive(p))   return n;
-               if (n = tryparse_name(p))        return n;  // ..label or assignment
-               if (n = tryparse_instruction(p)) return n;
-               fatal_error("wrong line");
-       }
-       return 0;
-}
-
-#define MAX_LINESIZE 1024
-
-int parse_file(const char *filename)
-{
-       FILE *fp = fopen(filename, "r");
-       if (!fp) fatal_error("wrong file");
-
-        //const int MAX_LINESIZE = 1024;
-       char line[MAX_LINESIZE];
-       int newline_missing = 0;
-
-       while (fgets(line, MAX_LINESIZE, fp)) {
-               if (newline_missing) fatal_error("line too long");
-
-               int n = strlen(line);
-               if (!n) continue;
-
-               parse_line(line);
-
-               newline_missing = (line[n-1] != '\n');
-       }
-
-       close(fp);
-}
-
-/*
-
-line_passed() {
-    skip_spaces();
-    return (current_token == LINE_END || current_token == LINE_COMMENT);
-}
-
-if (line_passed()) continue;
-if (current_token == DIRECTIVE) {
-    if (!try_next_token(NAME))
-        fatal_error("directive contains incorrect chars")
-    handler = get_directive_handler(current_token);
-    if (!handler)
-        fatal error("unknown directive");
-    (*handler)(remaining_line);
-    if (line_passed()) continue;
-    fatal_error("unexpected line tail");
-} else if (current_token == NAME) {
-    skip_spaces();
-    if (current_token == ASSIGNMENT)
-}
-    
-
-*/