Implement better error handling, but still no error guards

1 files changed, 29 insertions, 0 deletions

diff --git a/error.c b/error.c
new file mode 100644
index 0000000..2d69457
--- /dev/null
+++ b/error.c
@@ -0,0 +1,29 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+#include "apl9.h"
+
+ErrorHandler globalerror;
+
+Rune *errorstrs[] = {
+	[ESyntax] = L"SYNTAX ERROR",
+	[EParse] = L"PARSE ERROR",
+	[EValue] = L"VALUE ERROR",
+	[EDomain] = L"DOMAIN ERROR",
+	[ERank] = L"RANK ERROR",
+	[EType] = L"TYPE ERROR",
+	[ELength] = L"LENGTH ERROR",
+	[EIndex] = L"INDEX ERROR",
+	[EShape] = L"SHAPE ERROR",
+	[ENotImplemented] = L"NOT IMPLEMENTED",
+};
+
+void
+throwerror(Rune *msg, int err)
+{
+	free(globalerror.msg);
+	globalerror.msg = msg ? runestrdup(msg) : nil;
+	longjmp(globalerror.jmp, err);
+}
+