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FaceRegistry: Support referencing a named face from a parent scope

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This commit is contained in:
Maxime Coste 2018-04-10 19:57:16 +10:00
parent a2978bff25
commit 9c82f6586c
1 changed files with 16 additions and 16 deletions
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32
src/face_registry.cc
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@ -98,26 +98,26 @@ void FaceRegistry::add_face(StringView name, StringView facedesc, bool override)
if (name == facedesc)
throw runtime_error(format("cannot alias face '{}' to itself", name));
FaceOrAlias& face = m_faces[name];
auto it = m_faces.find(facedesc);
if (it != m_faces.end())
for (auto it = m_faces.find(facedesc);
it != m_faces.end() and not it->value.alias.empty();
it = m_faces.find(it->value.alias))
{
while (it != m_faces.end())
{
if (it->value.alias.empty())
break;
if (it->value.alias == name)
throw runtime_error("face cycle detected");
it = m_faces.find(it->value.alias);
}
if (it->value.alias == name)
throw runtime_error("face cycle detected");
}
face.alias = facedesc.str();
}
else
FaceOrAlias& face = m_faces[name];
for (auto* registry = this; registry != nullptr; registry = registry->m_parent.get())
{
face.alias = "";
face.face = parse_face(facedesc);
if (not registry->m_faces.contains(facedesc))
continue;
face.alias = facedesc.str(); // This is referencing another face
return;
}
face.alias = "";
face.face = parse_face(facedesc);
}
void FaceRegistry::remove_face(StringView name)