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llvm-build: Fill in some details w.r.t. component's parents.

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llvm-svn: 143624
This commit is contained in:
Daniel Dunbar 2011-11-03 17:56:16 +00:00
parent a21266263d
commit 53a6995401
2 changed files with 27 additions and 0 deletions
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9
utils/llvm-build/llvmbuild/componentinfo.py
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@ -37,6 +37,15 @@ class ComponentInfo(object):
# under.
self.parent = parent
# The parent instance, once loaded.
self.parent_instance = None
self.children = []
def set_parent_instance(self, parent):
assert parent.name == self.parent, "Unexpected parent!"
self.parent_instance = parent
self.parent_instance.children.append(self)
def get_component_references(self):
"""get_component_references() -> iter

18
utils/llvm-build/llvmbuild/main.py
View File

@ -54,6 +54,12 @@ class LLVMProjectInfo(object):
ci.name, ci.subpath, existing.subpath))
self.component_info_map[ci.name] = ci
# Add the root component, which does not go in any list.
if '$ROOT' in self.component_info_map:
fatal("project is not allowed to define $ROOT component")
self.component_info_map['$ROOT'] = componentinfo.GroupComponentInfo(
'/', '$ROOT', None)
# Topologically order the component information according to their
# component references.
def visit_component_info(ci, current_stack, current_set):
@ -73,6 +79,13 @@ class LLVMProjectInfo(object):
# Otherwise, mark the component info as visited and traverse.
components_to_visit.remove(ci)
# Validate the parent reference, which we treat specially.
parent = self.component_info_map.get(ci.parent)
if parent is None:
fatal("component %r has invalid reference %r (via %r)" % (
ci.name, ci.parent, 'parent'))
ci.set_parent_instance(parent)
for relation,referent_name in ci.get_component_references():
# Validate that the reference is ok.
referent = self.component_info_map.get(referent_name)
@ -90,6 +103,11 @@ class LLVMProjectInfo(object):
# Finally, add the component info to the ordered list.
self.ordered_component_infos.append(ci)
# FIXME: We aren't actually correctly checking for cycles along the
# parent edges. Haven't decided how I want to handle this -- I thought
# about only checking cycles by relation type. If we do that, it falls
# out easily. If we don't, we should special case the check.
self.ordered_component_infos = []
components_to_visit = set(component_infos)
while components_to_visit: