[ERRORS] adding a function to print verification errors

examples/simple.rs

@@ -1,5 +1,4 @@
-use std::{error::Error, process::exit};
-
+use std::error::Error;
 use Ygen::prelude::*;
 
 pub fn main() -> Result<(), Box<dyn Error>> {
@@ -13,17 +12,11 @@ pub fn main() -> Result<(), Box<dyn Error>> {
     let entry = func.addBlock("entry");
     builder.positionAtEnd(entry); 
 
-    let val = builder.BuildAdd(Type::i32(5), Type::i32(5))?;
+let val = builder.BuildAdd(Type::i32(5), Type::i32(5))?;
 
     builder.BuildRet( val );
 
-    match module.verify() {
-        Ok(_) => {},
-        Err(e) => {
-            println!("{}", e);
-            exit(0)
-        },
-    };
+    module.verify().print();
 
     println!("{}",
         module.dumpColored()

src/Support/mod.rs

@@ -4,8 +4,32 @@ mod pad;
 mod srcmngr;
 mod tokmngr;
 
+use std::process::exit;
+
 pub use color::{Colorize, ColorEncoder};
 pub use cli::Cli;
 pub use pad::Pad;
 pub use srcmngr::SrcMngr;
-pub use tokmngr::TokenMgr;
+pub use tokmngr::TokenMgr;
+
+use crate::IR::VerifyError;
+
+/// Prints the error and exits the process
+/// If no error occured this function just returns
+pub trait PrintErrorAndExit {
+    /// Prints the error and exits the process
+    /// If no error occured this function just returns
+    fn print(&self);
+}
+
+impl PrintErrorAndExit for Result<(), VerifyError> {
+    fn print(&self) {
+        match self {
+            Ok(_) => {},
+            Err(e) => {
+                println!("{}", e);
+                exit(-1)
+            }
+        }
+    }
+}

src/lib.rs

@@ -27,6 +27,7 @@ pub mod prelude {
     pub use crate::IR::FunctionType;
     pub use crate::IR::TypeMetadata;
     pub use crate::Target::Triple;
+    pub use crate::Support::PrintErrorAndExit;
 
     pub use crate::IR::ir::*;
 }