From 9cb8e4f83b49355610134b152df129b2f68ce9fe Mon Sep 17 00:00:00 2001
From: mrb0nk500 <b0nk@b0nk.xyz>
Date: Sat, 8 May 2021 12:22:25 -0400
Subject: Start implementing whole file lexing.

This will eventually replace the per-line lexer.
---
 asmmon.c   | 32 ++++++++++++++++++++++++++++++++
 asmmon.h   | 12 ++++++++++--
 assemble.c | 25 +++++++++++++++++++++++++
 3 files changed, 67 insertions(+), 2 deletions(-)

diff --git a/asmmon.c b/asmmon.c
index 81edff2..75e331b 100644
--- a/asmmon.c
+++ b/asmmon.c
@@ -23,6 +23,9 @@ symbol *last_sym = 0;
 fixup *fixups = 0;
 fixup *last_fix = 0;
 
+strln *first_strln = 0;
+strln *last_strln = 0;
+
 static char tstr[2048];
 
 void viewmem(uint64_t address) {
@@ -347,6 +350,30 @@ void list(uint16_t start, uint16_t end, uint8_t all, uint8_t ln, uint8_t addr, u
 	} while (s != e && s);
 }
 
+strln *make_strln(char *str, int blanks) {
+	strln *new_strln = malloc(sizeof(strln));
+
+	if (new_strln == NULL) {
+		return NULL;
+	}
+
+	new_strln->next = NULL;
+	new_strln->prev = NULL;
+	new_strln->str = str;
+	new_strln->blanks = blanks;
+
+	if (last_strln == NULL) {
+		first_strln = new_strln;
+	} else {
+		new_strln->prev = last_strln;
+		last_strln->next = new_strln;
+	}
+
+	last_strln = new_strln;
+
+	return new_strln;
+}
+
 int asmmon(const char *fn) {
 	FILE *fp = NULL;
 	FILE *fp2 = NULL;
@@ -616,6 +643,11 @@ int asmmon(const char *fn) {
 				default  : break;
 			}
 			if (!is_valid) {
+				size_t len = strlen(lex_line);
+				char *tmp = malloc(len+1);
+				memcpy(tmp, lex_line, len);
+				tmp[len] = '\0';
+				strln *dummy = make_strln(tmp, bline);
 				address = lex(lex_line, address, bline, dbg);
 				bline = 0;
 			}
diff --git a/asmmon.h b/asmmon.h
index beda687..1be290d 100644
--- a/asmmon.h
+++ b/asmmon.h
@@ -10,6 +10,7 @@ typedef struct sym symbol;
 typedef struct fix fixup;
 typedef struct inst instruction;
 typedef struct expr expr;
+typedef struct strln strln;
 
 
 struct tok {
@@ -47,8 +48,6 @@ struct ln {
 	uint64_t addr;		/* The address of this line.   */
 };
 
-
-
 struct fix {
 	fixup *next;
 	symbol *s;
@@ -89,6 +88,12 @@ struct expr {
 	} value;
 };
 
+struct strln {
+	strln *next;
+	strln *prev;
+	char *str;
+	int blanks;
+};
 
 extern char lexeme[];
 extern char *string[];
@@ -105,6 +110,9 @@ extern symbol *last_loc;
 extern fixup *fixups;
 extern fixup *last_fix;
 
+extern strln *first_strln;
+extern strln *last_strln;
+
 extern uint8_t lex_type;
 
 enum dir {
diff --git a/assemble.c b/assemble.c
index b51fd5c..cdd82d6 100644
--- a/assemble.c
+++ b/assemble.c
@@ -1304,6 +1304,23 @@ static void free_fixups(fixup *f) {
 	}
 }
 
+void free_strlns(strln *root) {
+	strln *line;
+	if (root != NULL) {
+		line = root;
+		root = root->next;
+		if (line->str != NULL) {
+			free(line->str);
+		}
+		line->blanks = 0;
+		line->prev = NULL;
+		line->next = NULL;
+		free(line);
+		line = NULL;
+		free_strlns(root);
+	}
+}
+
 uint64_t get_tokmem(token *t) {
 	uint64_t i = 0;
 	for (; t; t = t->next, i++);
@@ -1324,15 +1341,23 @@ void cleanup() {
 		/*fix_symtree(lines);*/
 		free_lines(lines);
 		lines = NULL;
+		last_line = NULL;
 	}
 	if (symbols) {
 		/*print_symtree(symbols, 0);*/
 		free_symbols(symbols);
 		symbols = NULL;
+		last_sym = NULL;
 	}
 	if (fixups) {
 		free_fixups(fixups);
 		fixups = NULL;
+		last_fix = NULL;
+	}
+	if (first_strln) {
+		free_strlns(first_strln);
+		first_strln = NULL;
+		last_strln = NULL;
 	}
 	while (i < stridx || i < comidx) {
 		if (i < stridx && string[i]) {
-- 
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