Module DataFlowImplCommon

Import path

import codeql.ruby.dataflow.internal.DataFlowImplCommon

Imports

Predicates

accessPathApproxCostLimits	The cost limits for the `AccessPathFront` to `AccessPathApprox` expansion.
accessPathCostLimits	The cost limits for the `AccessPathApprox` to `AccessPath` expansion.
argumentPositionMatch	Holds if `arg` is an argument of `call` with an argument position that matches parameter position `ppos`.
checkCallContextCall	Checks whether `call` can resolve to `calltarget` in the call context `cc`. Assumes a context of `calltarget = viableCallableExt(call)`.
checkCallContextReturn	Checks whether `inner` can return to `call` in the call context `innercc`. Assumes a context of `inner = viableCallableExt(call)`.
getLocalCallContext	Gets the local call context given the call context and the callable that the contexts apply to.
getNodeDataFlowType	Gets the type of `n` used for type pruning.
getNodeEnclosingCallable	Gets the enclosing callable of `n`. Unlike `n.getEnclosingCallable()`, this predicate ensures that joins go from `n` to the result instead of the other way around.
getReturnPosition
recordDataFlowCallSite	Holds if the call context `call` either improves virtual dispatch in `callable` or if it allows us to prune unreachable nodes in `callable`.
resolveCall	Resolves a call from `call` in `cc` to `result`. This is equivalent to `result = viableCallableExt(call) and checkCallContextCall(cc, call, result)`.
resolveReturn	Resolves a return from `callable` in `cc` to `call`. This is equivalent to `callable = viableCallableExt(call) and checkCallContextReturn(cc, callable, call)`.

Classes

AccessPathFront	The front of an access path. This is either a head or a nil.
AccessPathFrontHead
AccessPathFrontNil
AccessPathFrontOption	An optional access path front.
ApproxAccessPathFront	The front of an approximated access path. This is either a head or a nil.
ApproxAccessPathFrontHead
ApproxAccessPathFrontNil
ApproxAccessPathFrontOption	An optional approximated access path front.
ArgNode	A data-flow node that represents a call argument.
BooleanOption	An optional Boolean value.
CallContext	A call context to restrict the targets of virtual dispatch, prune local flow, and match the call sites of flow into a method with flow out of a method.
CallContextAny
CallContextCall
CallContextNoCall
CallContextReturn
CallContextSomeCall
CallContextSpecificCall
CastingNode	A `Node` at which a cast can occur such that the type should be checked.
DataFlowCallOption	An optional `DataFlowCall`.
LocalCallContext	A call context that is relevant for pruning local flow.
LocalCallContextAny
LocalCallContextSpecificCall
OutNodeExt	A node to which data can flow from a call. Either an ordinary out node or a post-update node associated with a call argument.
ParamNode	The value of a parameter at function entry, viewed as a node in a data flow graph.
ParamNodeOption	An optional `ParamNode`.
ParamUpdateReturnKind
ReturnCtx	A return context used to calculate flow summaries in reverse flow.
ReturnKindExt	An extended return kind. A return kind describes how data can be returned from a callable. This can either be through a returned value or an updated parameter.
ReturnNodeExt	A node from which flow can return to the caller. This is either a regular `ReturnNode` or a `PostUpdateNode` corresponding to the value of a parameter.
ReturnPosition	A callable tagged with a relevant return kind.
TypedContent	A `Content` tagged with the type of a containing object.
TypedContentApprox	An approximated `Content` tagged with the type of a containing object.
ValueReturnKind

Modules

DataFlowImplCommonPublic