Make the fuchsia mojo/public repo the source of truth.

mojo/public/tools/bindings/pylib/mojom/generate/constant_resolver.py

-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""Resolves the values used for constants and enums."""
-
-from itertools import ifilter
-import mojom.generate.module as mojom
-
-def ResolveConstants(module, expression_to_text):
-  in_progress = set()
-  computed = set()
-
-  def GetResolvedValue(named_value):
-    assert isinstance(named_value, (mojom.EnumValue, mojom.ConstantValue))
-    if isinstance(named_value, mojom.EnumValue):
-      field = next(ifilter(lambda field: field.name == named_value.name,
-                           named_value.enum.fields), None)
-      if not field:
-        raise RuntimeError(
-            'Unable to get computed value for field %s of enum %s' %
-            (named_value.name, named_value.enum.name))
-      if field not in computed:
-        ResolveEnum(named_value.enum)
-      return field.resolved_value
-    else:
-      ResolveConstant(named_value.constant)
-      named_value.resolved_value = named_value.constant.resolved_value
-      return named_value.resolved_value
-
-  def ResolveConstant(constant):
-    if constant in computed:
-      return
-    if constant in in_progress:
-      raise RuntimeError('Circular dependency for constant: %s' % constant.name)
-    in_progress.add(constant)
-    if isinstance(constant.value, (mojom.EnumValue, mojom.ConstantValue)):
-      resolved_value = GetResolvedValue(constant.value)
-    elif isinstance(constant.value, mojom.BuiltinValue):
-      resolved_value = expression_to_text(constant.value)
-    elif constant.kind in [mojom.FLOAT, mojom.DOUBLE]:
-      # Force float constants to have a decimal point.
-      resolved_value = expression_to_text(repr(float(constant.value)))
-    else:
-      resolved_value = expression_to_text(constant.value)
-    constant.resolved_value = resolved_value
-    in_progress.remove(constant)
-    computed.add(constant)
-
-  def ResolveEnum(enum):
-    def ResolveEnumField(enum, field, default_value):
-      if field in computed:
-        return
-      if field in in_progress:
-        raise RuntimeError('Circular dependency for enum: %s' % enum.name)
-      in_progress.add(field)
-      if field.value:
-        if isinstance(field.value, mojom.EnumValue):
-          resolved_value = GetResolvedValue(field.value)
-        elif isinstance(field.value, str):
-          resolved_value = int(field.value, 0)
-        else:
-          raise RuntimeError('Unexpected value: %s' % field.value)
-      else:
-        resolved_value = default_value
-      field.resolved_value = resolved_value
-      in_progress.remove(field)
-      computed.add(field)
-
-    current_value = 0
-    for field in enum.fields:
-      ResolveEnumField(enum, field, current_value)
-      current_value = field.resolved_value + 1
-
-  for constant in module.constants:
-    ResolveConstant(constant)
-
-  for enum in module.enums:
-    ResolveEnum(enum)
-
-  for struct in module.structs:
-    for constant in struct.constants:
-      ResolveConstant(constant)
-    for enum in struct.enums:
-      ResolveEnum(enum)
-    for field in struct.fields:
-      if isinstance(field.default, (mojom.ConstantValue, mojom.EnumValue)):
-        field.default.resolved_value = GetResolvedValue(field.default)
-
-  for interface in module.interfaces:
-    for constant in interface.constants:
-      ResolveConstant(constant)
-    for enum in interface.enums:
-      ResolveEnum(enum)
-
-  return module