From ed14b6fa3b05558e5b3320470d84282c39012d4c Mon Sep 17 00:00:00 2001
From: mainak55512 <mbhattacharjee432@gmail.com>
Date: Sat, 12 Oct 2024 17:29:51 +0530
Subject: [PATCH] updated err messages

---
 src/main.rs   | 8 +++++++-
 src/parser.rs | 8 ++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index dd18af7..cec026e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -32,7 +32,13 @@ fn main() {
     let cli = Cli::parse();
 
     let content = if let Some(load) = cli.load.as_deref() {
-        fs::read_to_string(load).expect("Could't read file content")
+        match fs::read_to_string(load) {
+            Ok(val) => val,
+            Err(_e) => {
+                println!("Couldn't read content from file");
+                std::process::exit(1);
+            }
+        }
     } else {
         io::stdin()
             .lock()
diff --git a/src/parser.rs b/src/parser.rs
index 3c3246e..cb31f7b 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -87,8 +87,16 @@ fn parse_binary_expr(token_array: &mut VecDeque<Token>) -> ASTNode {
 
 pub fn parse_ast(token_array: &mut VecDeque<Token>) -> ASTNode {
     let mut left = parse_binary_expr(token_array);
+    if token_array.len() > 0 && token_array[0].val != "&&" && token_array[0].val != "||" {
+        println!("Query is invalid");
+        std::process::exit(1);
+    }
     while token_array.len() > 0 && (token_array[0].val == "&&" || token_array[0].val == "||") {
         let operator = token_array.pop_front().expect("Empty operator").val;
+        if token_array.len() <= 0 {
+            println!("Query is invalid");
+            std::process::exit(1);
+        }
         let right = parse_binary_expr(token_array);
         left = ASTNode::BinaryExpr(Box::new(BinaryExpr {
             kind: LiteralType::LOGICAL_EXPR,