Add initial implementation of symbol checking

1 files changed, 2 insertions, 0 deletions

diff --git a/src/errors.c b/src/errors.c
index b93b462..2781bf5 100644
--- a/src/errors.c
+++ b/src/errors.c
@@ -15,6 +15,8 @@ static const char* error_msgs[] = {
     [ERR_NOT_A_BOOL]       = "error: expected a bool",
     [ERR_NOT_A_LPAREN]     = "error: expected opening parentheses (lparen)",
     [ERR_NOT_A_RPAREN]     = "error: expected closing parentheses (rparen)",
+    [ERR_SYMBOL_REDEF]     = "error: symbol redefinition",
+    [ERR_UNKNOWN_SYMBOL]   = "error: unknown symbol",
 };
 
 static Error current_error = {.value = ERR_OK};