started identification

2 files changed, 37 insertions, 12 deletions

diff --git a/util/arr.c b/util/arr.c
index aeeeb92..6cbf9eb 100644
--- a/util/arr.c
+++ b/util/arr.c
@@ -29,6 +29,11 @@ void *arr_add(Array *arr) {
 	return item;
 }
 
+void arr_remove_last(Array *arr) {
+	arr->len--;
+	/* OPTIM (memory): Shorten array. */
+}
+
 void arr_free(Array *arr) {
 	free(arr->data);
 }
diff --git a/util/err.c b/util/err.c
index 5385cf1..6eaa191 100644
--- a/util/err.c
+++ b/util/err.c
@@ -2,14 +2,21 @@
 
 #if USE_COLORED_TEXT
 #define TEXT_ERROR(x) "\x1b[91m" x "\x1b[0m"
+#define TEXT_INFO(x) "\x1b[94m" x "\x1b[0m"
 #define TEXT_IMPORTANT(x) "\x1b[1m" x "\x1b[0m"
 #else
 #define TEXT_ERROR(x) x
+#define TEXT_INFO(x) x
 #define TEXT_IMPORTANT(x) x
 #endif
 
 typedef uint32_t LineNo;
 
+typedef struct {
+	LineNo line;
+	char *code;
+} Location;
+
 /* file name of file being processed */
 static const char *err_filename;
 
@@ -33,6 +40,10 @@ static void err_print_header_(LineNo line) {
 	err_fprint(TEXT_ERROR("error:") " at line %lu of %s:\n", (unsigned long)line, err_filename);
 }
 
+static void info_print_header_(LineNo line) {
+	err_fprint(TEXT_INFO("info:") " at line %lu of %s:\n", (unsigned long)line, err_filename);
+}
+
 static void err_print_footer_(const char *context) {
 	err_fprint("\n\there --> ");
 	const char *end = strchr(context, '\n');
@@ -48,21 +59,30 @@ static void err_print_footer_(const char *context) {
 
 /* Write nicely-formatted errors to the error file */
 
-/* static void err_print(LineNo line, const char *context, const char *fmt, ...) { */
-/* 	err_print_header_(line); */
-/* 	va_list args; */
-/* 	va_start(args, fmt); */
-/* 	err_vfprint(fmt, args); */
-/* 	va_end(args); */
-/* 	err_print_footer_(context); */
-/* } */
-
-static void err_vprint(LineNo line, const char *context, const char *fmt, va_list args) {
-	err_print_header_(line);
+
+static void err_vprint(Location where, const char *fmt, va_list args) {
+	err_print_header_(where.line);
+	err_vfprint(fmt, args);
+	err_print_footer_(where.code);
+}
+
+static void err_print(Location where, const char *fmt, ...) {
+	va_list args;
+	va_start(args, fmt);
+	err_vprint(where, fmt, args);
+	va_end(args);
+}
+
+static void info_print(Location where, const char *fmt, ...) {
+	va_list args;
+	va_start(args, fmt);
+	info_print_header_(where.line);
 	err_vfprint(fmt, args);
-	err_print_footer_(context);
+	err_print_footer_(where.code);
+	va_end(args);
 }
 
+
 static void *err_malloc(size_t size) {
 	void *ret = malloc(size);
 	if (!ret) {