Skip to content

Python: inline init_module_submodule_defn into ImportResolution #21930

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
yoff wants to merge 1 commit into
base: yoff/python-simplify-decorator-predicates
Choose a base branch
from
+14 −2
Open

Python: inline init_module_submodule_defn into ImportResolution #21930

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 14 additions & 2 deletions python/ql/lib/semmle/python/dataflow/new/internal/ImportResolution.qll
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,19 @@ private import semmle.python.dataflow.new.DataFlow
private import semmle.python.dataflow.new.internal.ImportStar
private import semmle.python.dataflow.new.TypeTracking
private import semmle.python.dataflow.new.internal.DataFlowPrivate
private import semmle.python.essa.SsaDefinitions

/**
* Holds if `init` is a package's `__init__.py` and `var` is a global variable in
* `init` whose name matches a submodule of the package.
*
* Inlined from `SsaSource::init_module_submodule_defn` to avoid pulling
* `semmle.python.essa.SsaDefinitions` into the new dataflow stack.
*/
private predicate initModuleSubmoduleDefn(GlobalVariable var, Module init) {
init.isPackageInit() and
exists(init.getPackage().getSubModule(var.getId())) and
var.getScope() = init
}

/**
* Python modules and the way imports are resolved are... complicated. Here's a crash course in how
Expand Down Expand Up @@ -326,7 +338,7 @@ module ImportResolution {
// imported yet.
exists(string submodule, Module package, EssaVariable var |
submodule = var.getName() and
SsaSource::init_module_submodule_defn(var.getSourceVariable(), package.getEntryNode()) and
initModuleSubmoduleDefn(var.getSourceVariable(), package) and
m = getModuleFromName(package.getPackageName() + "." + submodule) and
result.asCfgNode() = var.getDefinition().(EssaNodeDefinition).getDefiningNode()
)
Expand Down
Loading