feat(core,cli): Add diagnostic handler to SandConfig

1 files changed, 24 insertions, 1 deletions

diff --git a/src/cli/main.c b/src/cli/main.c
index db42a14..cbecf50 100644
--- a/src/cli/main.c
+++ b/src/cli/main.c
@@ -140,15 +140,38 @@ static void print_help(FILE *stream, const char *argv0) {
 }
 
 static void print_handler(const char *message, size_t message_length) {
-	fprintf(stderr, message, message_length);
+	fprintf(stdout, message, message_length);
+}
+
+void diagnostic_handler(const SandLocation *location, SandDiagnosticLevel level, const char *message, size_t message_length) {
+	sand_print_location(stderr, location);
+	switch (level) {
+		case SAND_DIAGNOSTIC_INFO: fprintf(stderr, ": info"); break;
+		case SAND_DIAGNOSTIC_WARNING: fprintf(stderr, ": warning"); break;
+		case SAND_DIAGNOSTIC_ERROR: fprintf(stderr, ": error"); break;
+	}
+	fprintf(stderr, ": %.*s\n", (int)message_length, message);
 }
 
 int main(int argc, char *argv[]) {
 	SandConfig config = {
 		.print_handler = print_handler,
+		.diagnostic_handler = diagnostic_handler,
 	};
 	SandState state = sand_create_state(config);
 
+	// TEMP
+	SandLocation loc = {
+		.filename = "fake.sand",
+		.start_line = 0,
+		.start_column = 0,
+		.end_line = 0,
+		.end_column = 5,
+	};
+	sand_print_diagnostic(&state, &loc, SAND_DIAGNOSTIC_INFO, "This is a test info message");
+	sand_print_diagnostic(&state, &loc, SAND_DIAGNOSTIC_WARNING, "oh no the number is %d", 5);
+	sand_print_diagnostic(&state, &loc, SAND_DIAGNOSTIC_ERROR, "gaide gad error here %d", 5);
+
 	if (argc == 1) {
 		repl(&state);
 	} else if (argc == 2 && strcmp(argv[1], "--help") == 0) {