completions: Add types in typeof<> and as<>

blueprintcompiler/language/__init__.py

@@ -44,7 +44,7 @@ from .gtkbuilder_child import (
 from .gtkbuilder_template import Template
 from .imports import GtkDirective, Import
 from .response_id import ExtResponse
-from .types import ClassName
+from .types import BracketedTypeName, ClassName, TypeName
 from .ui import UI
 from .values import (
     ArrayValue,

blueprintcompiler/language/expression.py

@@ -21,7 +21,7 @@
 from ..decompiler import decompile_element
 from .common import *
 from .contexts import ScopeCtx, ValueTypeCtx
-from .types import TypeName
+from .types import BracketedTypeName, TypeName
 
 expr = Sequence()
 
@@ -196,7 +196,7 @@ class CastExpr(InfixExpr):
     grammar = [
         Keyword("as"),
         AnyOf(
-            ["<", TypeName, Match(">").expected()],
+            BracketedTypeName,
             [
                 UseExact("lparen", "("),
                 TypeName,
@@ -211,7 +211,13 @@ class CastExpr(InfixExpr):
 
     @property
     def type(self) -> T.Optional[GirType]:
-        return self.children[TypeName][0].gir_type
+        if len(self.children[BracketedTypeName]) == 1:
+            type_name = self.children[BracketedTypeName][0].type_name
+            return None if type_name is None else type_name.gir_type
+        elif len(self.children[TypeName]) == 1:
+            return self.children[TypeName][0].gir_type
+        else:
+            return None
 
     @validate()
     def cast_makes_sense(self):

blueprintcompiler/language/types.py

@@ -27,11 +27,11 @@ class TypeName(AstNode):
         [
             UseIdent("namespace"),
             ".",
-            UseIdent("class_name"),
+            UseIdent("class_name").expected("class name"),
         ],
         [
             AnyOf("$", [".", UseLiteral("old_extern", True)]),
-            UseIdent("class_name"),
+            UseIdent("class_name").expected("class name"),
             UseLiteral("extern", True),
         ],
         UseIdent("class_name"),
@@ -47,7 +47,11 @@ class TypeName(AstNode):
 
     @validate("class_name")
     def type_exists(self):
-        if not self.tokens["extern"] and self.gir_ns is not None:
+        if (
+            not self.tokens["extern"]
+            and self.gir_ns is not None
+            and self.tokens["class_name"] is not None
+        ):
             self.root.gir.validate_type(
                 self.tokens["class_name"], self.tokens["namespace"]
             )
@@ -182,3 +186,14 @@ class TemplateClassName(ClassName):
             self.root.gir.validate_type(
                 self.tokens["class_name"], self.tokens["namespace"]
             )
+
+
+class BracketedTypeName(AstNode):
+    grammar = Statement("<", to_parse_node(TypeName).expected("type name"), end=">")
+
+    @property
+    def type_name(self) -> T.Optional[TypeName]:
+        if len(self.children[TypeName]) == 0:
+            return None
+
+        return self.children[TypeName][0]

blueprintcompiler/language/values.py

@@ -26,7 +26,7 @@ from .common import *
 from .contexts import ExprValueCtx, ScopeCtx, ValueTypeCtx
 from .expression import Expression
 from .gobject_object import Object
-from .types import TypeName
+from .types import BracketedTypeName, TypeName
 
 
 class Translated(AstNode):
@@ -80,11 +80,7 @@ class TypeLiteral(AstNode):
     grammar = [
         "typeof",
         AnyOf(
-            [
-                "<",
-                to_parse_node(TypeName).expected("type name"),
-                Match(">").expected(),
-            ],
+            BracketedTypeName,
             [
                 UseExact("lparen", "("),
                 to_parse_node(TypeName).expected("type name"),
@@ -98,8 +94,13 @@ class TypeLiteral(AstNode):
         return gir.TypeType()
 
     @property
-    def type_name(self) -> TypeName:
-        return self.children[TypeName][0]
+    def type_name(self) -> T.Optional[TypeName]:
+        if len(self.children[BracketedTypeName]) == 1:
+            return self.children[BracketedTypeName][0].type_name
+        elif len(self.children[TypeName]) == 1:
+            return self.children[TypeName][0]
+        else:
+            return None
 
     @validate()
     def validate_for_type(self) -> None: