IDL compiler: Implement public representation of Typedef

Bug: 839389
Change-Id: I04ec1ffa64070b9a76fa5c9d9dc82a59ab4cf014
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1714810Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#680333}

third_party/blink/renderer/bindings/scripts/web_idl/database.py

@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+from .typedef import Typedef
 from .user_defined_type import UserDefinedType
 
 
@@ -52,7 +53,7 @@ class DatabaseBody(object):
             self._defs[kind] = {}
 
     def register(self, kind, user_defined_type):
-        assert isinstance(user_defined_type, UserDefinedType)
+        assert isinstance(user_defined_type, (UserDefinedType, Typedef))
         assert kind in DatabaseBody.Kind.itervalues()
         try:
             self.find_by_identifier(user_defined_type.identifier)

third_party/blink/renderer/bindings/scripts/web_idl/idl_compiler.py

@@ -8,6 +8,7 @@ from .dictionary import Dictionary
 from .identifier_ir_map import IdentifierIRMap
 from .idl_type import IdlTypeFactory
 from .reference import RefByIdFactory
+from .typedef import Typedef
 
 
 class IdlCompiler(object):
@@ -103,6 +104,11 @@ class IdlCompiler(object):
         for ir in dictionary_irs.itervalues():
             self._db.register(DatabaseBody.Kind.DICTIONARY, Dictionary(ir))
 
+        typedef_irs = self._ir_map.find_by_kind(
+            IdentifierIRMap.IR.Kind.TYPEDEF)
+        for ir in typedef_irs.itervalues():
+            self._db.register(DatabaseBody.Kind.TYPEDEF, Typedef(ir))
+
     def _resolve_references_to_idl_type(self):
         def resolve(ref):
             # Resolve to stubs for the time being.

third_party/blink/renderer/bindings/scripts/web_idl/idl_type.py

@@ -12,6 +12,7 @@ from .common import WithExtendedAttributes
 from .common import WithIdentifier
 from .reference import Proxy
 from .reference import RefById
+from .typedef import Typedef
 from .user_defined_type import UserDefinedType
 
 # The implementation class hierarchy of IdlType
@@ -562,6 +563,7 @@ class TypedefType(IdlType, WithIdentifier):
                  code_generator_info=None,
                  debug_info=None,
                  pass_key=None):
+        assert isinstance(typedef, Typedef)
         IdlType.__init__(
             self,
             code_generator_info=code_generator_info,

third_party/blink/renderer/bindings/scripts/web_idl/typedef.py

@@ -31,10 +31,18 @@ class Typedef(WithIdentifier, WithCodeGeneratorInfo, WithComponent,
 
             self.idl_type = idl_type
 
+    def __init__(self, ir):
+        assert isinstance(ir, Typedef.IR)
+
+        WithIdentifier.__init__(self, ir.identifier)
+        WithCodeGeneratorInfo.__init__(self,
+                                       ir.code_generator_info.make_copy())
+        WithComponent.__init__(self, components=ir.components)
+        WithDebugInfo.__init__(self, ir.debug_info.make_copy())
+
+        self._idl_type = ir.idl_type
+
     @property
     def idl_type(self):
-        """
-        Returns the type to have an alias.
-        @return IdlType
-        """
-        assert False, 'Not implemented yet'
+        """Returns the typedef'ed type."""
+        return self._idl_type