chore: create helpers for expression testing in semantic analysis

src/semantic/checks/expression.rs

@@ -350,19 +350,30 @@ impl SemanticCheck for Expression<'_> {
 #[cfg(test)]
 mod tests {
     use crate::{
-        lexic::token::Token,
+        lexic::{self, get_tokens, token::Token},
         semantic::{impls::SemanticCheck, std::populate, symbol_table::SymbolTable},
-        syntax::ast::{
-            functions::{ArgumentsList, FunctionCall},
-            Expression,
+        syntax::{
+            ast::{
+                functions::{ArgumentsList, FunctionCall},
+                Expression,
+            },
+            parseable::Parseable,
         },
     };
 
+    fn t(i: &str) -> Vec<Token> {
+        get_tokens(&i.into()).unwrap()
+    }
+    fn exp<'a>(t: &'a Vec<Token>) -> Expression<'a> {
+        Expression::try_parse(t, 0).unwrap().0
+    }
+
     #[test]
     fn should_error_on_undefined_symbol() {
         // source code: `print()`
-        let expr_token = Token::new_identifier("print".into(), 0);
-        let expr_function = Expression::Identifier(&expr_token);
+        let b = t("print()");
+        let expr_function = exp(&b);
+
         let arguments = ArgumentsList {
             arguments: vec![],
             paren_open_pos: 5,

src/semantic/impls.rs

@@ -4,6 +4,10 @@ use super::symbol_table::SymbolTable;
 
 /// Allows this type to have it's semantics checked.
 pub trait SemanticCheck {
+    /// Checks the semantics of this AST node and performs typechecking
+    ///
+    /// Types are provided by the Typed trait, because not every AST node
+    /// will have a defined type
     fn check_semantics(&self, scope: &SymbolTable) -> Result<(), MistiError>;
 }
 

src/syntax/mod.rs

@@ -1,7 +1,7 @@
 use crate::error_handling::MistiError;
 
 mod functions;
-mod parseable;
+pub mod parseable;
 mod parsers;
 mod utils;