nodes: rework variable and fix its intermediate representation

compiler/nodes.py

@@ -244,11 +244,15 @@ class Identifier(Literal):
         self.value: str
 
 
-class Variable(Literal):
-    def __init__(self, location: SourceLocation, identifier: Identifier):
-        super().__init__(location, None)
+class Variable(Node):
+    def __init__(self, identifier: Identifier):
+        super().__init__()
+        self.value: semantic.Variable | None = None
         self.identifier = identifier
 
+    def _values(self) -> list[Node | Any]:
+        return [self.identifier]
+
     def semantic_analysis(self, context: semantic.Context):
         variable = context.get_variable(self.identifier.value)
         if variable is None:
@@ -258,7 +262,11 @@ class Variable(Literal):
         logger.debug(f"Linked variable reference to var {variable}")
 
     def intermediate_representation(self) -> list[ir.IRItem]:
-        result = [ir.IRVariable(location=self.location(), fq_identifier=self.value.fully_qualified_name())]
+        assert self.value is not None
+
+        dest = ir.IRRegister(location=self.location())
+        immediate = ir.IRVariable(location=self.location(), fq_identifier=self.value.fully_qualified_name())
+        result = [ir.IRMove(location=self.location(), dest=dest, source=immediate)]
         return result
 
 

compiler/parser.py

@@ -86,7 +86,7 @@ class Parser:
     @tracer.trace_method
     def variable(self, mandatory: bool = False) -> Variable:
         if ident := self.identifier(mandatory=False):
-            return Variable(location=ident.location(), identifier=ident)
+            return Variable(identifier=ident)
         elif mandatory:
             raise UnexpectedTokenError(self.token, "variable identifier")