Update log_on_line to take Location* instead of individual fields

v0/log.c

@@ -18,11 +18,11 @@ void log_error(const char* msg) {
     }
 }
 
-void log_on_line(const char* filename, const char* line_text, int line, int from, int to, const char* msg, ...) {
+void log_on_line(Location* loc, int to_column, const char* msg, ...) {
     char line_prefix[32];
-    int prefix_len = snprintf(line_prefix, sizeof(line_prefix), "%d| ", line);
+    int prefix_len = snprintf(line_prefix, sizeof(line_prefix), "%d| ", loc->line);
     
-    int caret_len = to - from + 1;
+    int caret_len = to_column - loc->column + 1;
     if (caret_len < 1) caret_len = 1;
 
     // Format the message
@@ -32,9 +32,9 @@ void log_on_line(const char* filename, const char* line_text, int line, int from
     vsnprintf(formatted_msg, sizeof(formatted_msg), msg, args);
     va_end(args);
 
-    size_t total_size = strlen(filename) + 16 + // --- filename ---
-                        prefix_len + strlen(line_text) + 2 + // line| text\n
-                        prefix_len + from - 1 + caret_len + 2 + // indent + ^^\n
+    size_t total_size = strlen(loc->filename) + 16 + // --- filename ---
+                        prefix_len + strlen(loc->line_text) + 2 + // line| text\n
+                        prefix_len + loc->column - 1 + caret_len + 2 + // indent + ^^\n
                         prefix_len + strlen(formatted_msg) + 2 + // indent + msg\n
                         1;
 
@@ -42,11 +42,11 @@ void log_on_line(const char* filename, const char* line_text, int line, int from
     if (!buffer) return;
 
     char* p = buffer;
-    p += sprintf(p, "--- %s ---\n", filename);
-    p += sprintf(p, "%s%s\n", line_prefix, line_text);
+    p += sprintf(p, "--- %s ---\n", loc->filename);
+    p += sprintf(p, "%s%s\n", line_prefix, loc->line_text);
     
     // Caret line
-    for (int i = 0; i < prefix_len + from - 1; i++) *p++ = ' ';
+    for (int i = 0; i < prefix_len + loc->column - 1; i++) *p++ = ' ';
     for (int i = 0; i < caret_len; i++) *p++ = '^';
     *p++ = '\n';