hlc

commit 9f14011d13c1e9c2b20af43e06e9ece090bd3222
parent 0d5b94030b9645b15012f93669b05f07a110ccad
Author: thing1 <thing1@seacrossedlovers.xyz>
Date:   Thu,  9 Oct 2025 12:35:07 +0100

added support for EOF

Diffstat:
M
Makefile
 | 
2
+-
M
lex.c
 | 
19
++++++++++++++-----
M
lex.h
 | 
7
++++++-
M
main.c
 | 
7
+++++--

4 files changed, 26 insertions(+), 9 deletions(-)
diff --git a/Makefile b/Makefile
@@ -1,5 +1,5 @@
 CC=c89
-CFLAGS=-ggdb
+CFLAGS=-ggdb -pedantic -fsanitize=address
 
 SRC = lex.c main.c
 OBJ = ${SRC:.c=.o}
diff --git a/lex.c b/lex.c
@@ -16,7 +16,10 @@ lex_val *(*nextfn)(void);
 int
 getchr(FILE *in) {
 	int c;
-	while (isblank((c = getc(in)))) continue;
+	while ((c = getc(in)) != EOF && (isblank(c) || c == '\n'))
+		continue;
+	if (c == EOF)
+		lex_error.type = EOI;
 	return c;
 }
 
@@ -82,6 +85,7 @@ lex_semi() {
 
 lex_val *
 lex_assign() {
+	nextfn = &lex_value;
 	return lex_char('=', ASSIGN);
 }
 
@@ -112,15 +116,20 @@ lex_sym() {
 	}
 }
 
+/* TODO make this read ints and other litterals */
+lex_val *
+lex_value() {
+	return lex_name();
+}
 
-
-/* TODO: make this execpt pointer derefs at the start of a name */
 lex_val *
 lex_name(void) {
-	
-	static char name[32] = { 0 };
+	static char name[32];
 	char c, len = 0;
 
+	memset(name, 0, 32); /* note this resets the previous value, 
+				when converting to an ast, use a dup */
+
 	if (peekc(input) == '*') {
 		getchr(input);
 		lv.type = DEREF;
diff --git a/lex.h b/lex.h
@@ -29,7 +29,8 @@ enum lex_type {
 	SHORT,
 	LONG,
 	OCBRACE,
-	CCBRACE
+	CCBRACE,
+	EOI
 };
 
 typedef struct lex_val {
@@ -38,6 +39,10 @@ typedef struct lex_val {
 } lex_val;
 
 lex_val *lex_name(void);
+lex_val *lex_value(void);
+lex_val *lex_sym(void);
+lex_val *lex_comma(void);
+lex_val *lex_semi(void);
 lex_val *lex_type(void);
 
 lex_val *get_next(void);
diff --git a/main.c b/main.c
@@ -8,9 +8,12 @@ main() {
 	FILE *f = fopen("test.hlc", "r");
 	init_lexer(f);
 
-	while (val = get_next()) 
-		if (val->type == UNKNOWN)
+	while (val = get_next()) {
+		if (val->type == EOI)
 			break;
+		if (val->type == UNKNOWN)
+			fprintf(stderr, "unknown syntax\n");
+	}
 
 	fclose(f);
 }