better errors

src/lexer.rs

@@ -121,7 +121,7 @@ fn get_second_char(value: &str) -> String {
     sv2.next().unwrap().to_string()
 }
 
-pub fn lex(mut code: &str, use_whitespace: bool) -> Vec<Token> {
+pub fn lex(mut code: &str, use_whitespace: bool) -> Result<Vec<Token>, (LexerState, Vec<Token>)> {
     let mut state = LexerState { line: 1, column: 1 };
     let mut tokens: Vec<Token> = Vec::new();
     let mut bracket_vec: Vec<char> = Vec::new();
@@ -292,9 +292,9 @@ pub fn lex(mut code: &str, use_whitespace: bool) -> Vec<Token> {
             }
         }
         if !is_match {
-            println!("Error: syntax ->{code}");
-            break;
+            return Err((state, tokens));
+            // break;
         }
     }
-    tokens
+    Ok(tokens)
 }

src/main.rs

@@ -5,7 +5,8 @@ use std::fs;
 
 
 fn main() {
-    let contents = fs::read_to_string("code.ws").expect("cannot read for some reason");
+    let code_file = "code.ws";
+    let contents = fs::read_to_string(code_file).expect("cannot read for some reason");
     let result = transpiler::transpile(contents, 0);
     println!("{result}")
 }

src/transpiler.rs

@@ -3,11 +3,14 @@ use crate::parser::{Parser, AstType};
 
 pub fn transpile(input: String, indent: u32) -> String {
     let mut result = String::new();
-    let tokens = lex(input.as_str(), false);
+    let lexer_out = lex(input.as_str(), false);
+    match lexer_out {
+        Ok(tokens) => {
             println!("\n\n\n\n");
             let mut full_ast = Parser::new(tokens.clone());
             while full_ast.tokens.len() > full_ast.index as usize {
                 let ast = full_ast.next();
+                println!("{ast}");
                 if ast.ast_type == AstType::FunctionDeceleration {
                     result += format!("fn {}{} -> {} {}", ast.tokens[1].value, ast.tokens[2].value,  ast.tokens[0].value, transpile(ast.tokens[3].value.clone(), indent+1)).as_str();
                 } else if ast.ast_type == AstType::VoidFunctionDeceleration {
@@ -72,4 +75,11 @@ pub fn transpile(input: String, indent: u32) -> String {
             } else {
                 return result
             }
+        },
+        Err((state, _tokens)) => {
+            println!("Invalid character at code.ws:{}:{}", state.line, state.column);
+            return "".to_string();
+        }
+    }
+    
 }