Remove PySymbol*Ref types

Author: youknowone

compiler/codegen/src/symboltable.rs

@@ -127,7 +127,6 @@ bitflags! {
 #[derive(Debug, Clone)]
 pub struct Symbol {
     pub name: String,
-    // pub table: SymbolTableRef,
     pub scope: SymbolScope,
     pub flags: SymbolFlags,
 }

vm/src/stdlib/symtable.rs

@@ -16,7 +16,7 @@ mod symtable {
         filename: PyStrRef,
         mode: PyStrRef,
         vm: &VirtualMachine,
-    ) -> PyResult<PySymbolTableRef> {
+    ) -> PyResult<PyRef<PySymbolTable>> {
         let mode = mode
             .as_str()
             .parse::<compiler::Mode>()
@@ -33,9 +33,6 @@ mod symtable {
         PySymbolTable { symtable }
     }
 
-    type PySymbolTableRef = PyRef<PySymbolTable>;
-    type PySymbolRef = PyRef<PySymbol>;
-
     #[pyattr]
     #[pyclass(name = "SymbolTable")]
     #[derive(PyPayload)]
@@ -77,7 +74,7 @@ mod symtable {
         }
 
         #[pymethod]
-        fn lookup(&self, name: PyStrRef, vm: &VirtualMachine) -> PyResult<PySymbolRef> {
+        fn lookup(&self, name: PyStrRef, vm: &VirtualMachine) -> PyResult<PyRef<PySymbol>> {
             let name = name.as_str();
             if let Some(symbol) = self.symtable.symbols.get(name) {
                 Ok(PySymbol {