CodeQL library for JavaScript/TypeScript

codeql/javascript-all 2.2.1-dev (changelog, source)

Module CachedSteps

Implements a set of data flow predicates that are used by multiple predicates and hence should only be computed once.

Import path

import semmle.javascript.dataflow.internal.FlowSteps

Predicates

argumentPassing	Holds if `arg` is passed as an argument into parameter `parm` through invocation `invk` of function `f`.
basicLoadStep	Holds if there is a load step from `pred` to `succ` under property `prop`, that is, `succ` is a read of property `prop` from `pred`.
basicStoreStep	Holds if there is a store step from `pred` to `succ` under property `prop`, that is, `succ` is the local source of the base of a write of property `prop` with right-hand side `pred`.
callStep	Holds if there is a flow step from `pred` to `succ` through parameter passing to a function call.
calls	Holds if `invk` may invoke `f`.
callsBound	Holds if `invk` may invoke a bound version of `f` with `boundArgs` already bound.
captures	Holds if `f` captures the given `variable` in `cap`.
exploratoryBoundInvokeStep	Holds if `pred` may flow to `succ` through an invocation of a bound function.
exploratoryCallbackStep	Holds if there is a higher-order call with argument `arg`, and `cb` is the local source of an argument that flows into the callee position of that call:
getACallbackSource	Gets a function that flows to `parameter` via one or more parameter-passing steps.
getCapturedVariableDepth	Gets the nesting depth of the container declaring the given captured variable.
getContainerDepth	Gets the nesting depth of the given container, starting with the top-level at 0.
globalFlowStep	Holds if there is a flow step from `pred` to `succ` through a global variable. Both `pred` and `succ` must be in the same file.
identityFunctionStep	Holds if there is a step from `pred` to `succ` through a call to an identity function.
propertyFlowStep	Holds if there is a flow step from `pred` to `succ` through an object property.
receiverPropWrite	Holds if `f` may assign `rhs` to `this.prop`.
returnStep	Holds if there is a flow step from `pred` to `succ` through: - returning a value from a function call (from the special `FunctionReturnNode`), or - throwing an exception out of a function call, or - the receiver flowing out of a constructor call.
returnedPropWrite	Holds if `f` may return `base`, which has a write of property `prop` with right-hand side `rhs`.