Implemented complex expressions

src/build/VariableDefinition.go

@@ -2,7 +2,6 @@ package build
 
 import (
 	"git.akyoto.dev/cli/q/src/build/expression"
-	"git.akyoto.dev/cli/q/src/build/token"
 	"git.akyoto.dev/cli/q/src/errors"
 )
 
@@ -18,27 +17,18 @@ func (f *Function) CompileVariableDefinition(expr *expression.Expression) error
 		return errors.New(&errors.VariableAlreadyExists{Name: name}, f.File, expr.Children[0].Token.Position)
 	}
 
-	value := expr.Children[1]
-
-	err := value.EachLeaf(func(leaf *expression.Expression) error {
-		if leaf.Token.Kind == token.Identifier && !f.identifierExists(leaf.Token.Text()) {
-			return errors.New(&errors.UnknownIdentifier{Name: leaf.Token.Text()}, f.File, leaf.Token.Position)
-		}
-
-		return nil
-	})
-
-	if err != nil {
-		return err
-	}
-
 	reg, exists := f.CPU.FindFree(f.CPU.General)
 
 	if !exists {
 		panic("no free registers")
 	}
 
-	f.ExpressionToRegister(value, reg)
+	err := f.ExpressionToRegister(expr.Children[1], reg)
+
+	if err != nil {
+		return err
+	}
+
 	f.CPU.Use(reg)
 
 	f.Variables[name] = &Variable{