From f486fa1fe835939bc4e19ef54f9cf0767bd371dc Mon Sep 17 00:00:00 2001
From: QuanQuan-CHO <836200779@qq.com>
Date: Fri, 27 Oct 2023 20:20:14 +0800
Subject: [PATCH] [Phase1] Fix `lex.l` to pass test cases 1-9

---
 phase1/lex.l | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/phase1/lex.l b/phase1/lex.l
index be090b7..22886f4 100644
--- a/phase1/lex.l
+++ b/phase1/lex.l
@@ -61,7 +61,9 @@ return {yylval=strdup("RETURN\n"); return RETURN;}
 "*" {yylval=strdup("MUL\n"); return MUL;}
 "/" {yylval=strdup("DIV\n"); return DIV;}
 "&&" {yylval=strdup("AND\n"); return AND;}
+"&" {lexical_error(yytext,yylineno); return AND;} //treat it as AND to prevent the syntax error later
 "||" {yylval=strdup("OR\n"); return OR;}
+"|" {lexical_error(yytext,yylineno); return OR;} //treat it as OR to prevent the syntax error later
 "(" {yylval=strdup("LP\n"); return LP;}
 ")" {yylval=strdup("RP\n"); return RP;}
 "[" {yylval=strdup("LB\n"); return LB;}