CodeQL library for C#

Module DataFlow

Import path

import csharp

Predicates

assignableDefinitionNode	Gets a node corresponding to the definition `def`.
exprNode	Gets a node corresponding to expression `e`.
flowsTo	Holds if data can flow (inter-procedurally) from `source` to `sink`.
localExprFlow	Holds if data can flow from `e1` to `e2` in zero or more local (intra-procedural) steps.
localFlow	Holds if data flows from `source` to `sink` in zero or more local (intra-procedural) steps.
parameterNode	Gets the node corresponding to the value of parameter `p` at function entry.
stageStats	INTERNAL: Only for debugging.

Classes

AssignableDefinitionNode	A definition, viewed as a node in a data flow graph.
BarrierGuard	A guard that validates some expression.
Configuration	A configuration of interprocedural data flow analysis. This defines sources, sinks, and any other configurable aspect of the analysis. Each use of the global data flow library must define its own unique extension of this abstract class. To create a configuration, extend this class with a subclass whose characteristic predicate is a unique singleton string. For example, write
Content	A reference contained in an object. This is either a field, a property, or an element in a collection.
ElementContent	A reference to an element in a collection.
ExprNode	An expression, viewed as a node in a data flow graph.
FieldContent	A reference to a field.
Node	An element, viewed as a node in a data flow graph. Either an expression (`ExprNode`) or a parameter (`ParameterNode`).
NonLocalJumpNode	A data flow node that jumps between callables. This can be extended in framework code to add additional data flow steps.
ParameterNode	The value of a parameter at function entry, viewed as a node in a data flow graph.
PartialPathNode	A `Node` augmented with a call context, an access path, and a configuration.
PathNode	A `Node` augmented with a call context (except for sinks), an access path, and a configuration. Only those `PathNode`s that are reachable from a source are generated.
PropertyContent	A reference to a property.

Modules

PartialPathGraph	Provides the query predicates needed to include a graph in a path-problem query.
PathGraph	Provides the query predicates needed to include a graph in a path-problem query.

Aliases

Holds if data flows from nodeFrom to nodeTo in exactly one local (intra-procedural) step.