Class DataFlow::SourceNode

A source node for local data flow, that is, a node from which local data flow is tracked.

This includes function invocations, parameters, object creation, and references to a property or global variable.

You can introduce new kinds of source nodes by defining new subclasses of DataFlow::SourceNode::Range.

Examples:

obj.f             // property access
Math.abs(x)       // function calls
{ f: 12, g: 45 }; // object expressions
function fn(x) {} // functions and parameters
class C {}        // classes
document          // global variable access
<View/>           // JSX literals
/[a-z]+/g;        // regular expression literal
await x           // await expression
import * as fs from 'fs';
import { readDir } from 'fs';
import("fs")

Import path

import javascript

Direct supertypes

Node

Indirect supertypes

TNode

Known direct subtypes

Predicates

backtrack	Gets a node that may flow into this one using one heap and/or interprocedural step.
flowsTo	Holds if this node flows into `sink` in zero or more local (that is, intra-procedural) steps.
flowsToExpr	Holds if this node flows into `sink` in zero or more local (that is, intra-procedural) steps.
getACall	Gets a function call to this node.
getAChainedMethodCall	Gets a chained method call that invokes `methodName` last.
getAConstructorInvocation	Gets a `new` call that invokes constructor `constructorName` on this node.
getALocalUse	Gets a node into which data may flow from this node in zero or more local steps.
getAMemberCall	Gets a function call that invokes method `memberName` on this node.
getAMemberInvocation	Gets an invocation of the method or constructor named `memberName` on this node.
getAMethodCall	Gets a method call that invokes a method on this node.
getAMethodCall	Gets a method call that invokes method `methodName` on this node.
getAPropertyRead	Gets a read of any property on this node.
getAPropertyRead	Gets a read of property `propName` on this node.
getAPropertyReference	Gets a reference (read or write) of any property on this node.
getAPropertyReference	Gets a reference (read or write) of property `propName` on this node.
getAPropertySource	Gets a source node whose value is stored in a property of this node.
getAPropertySource	Gets a source node whose value is stored in property `prop` of this node.
getAPropertyWrite	Gets a write of any property on this node.
getAPropertyWrite	Gets a write of property `propName` on this node.
getAnInstantiation	Gets a `new` call to this node.
getAnInvocation	Gets an invocation (with our without `new`) of this node.
hasPropertyWrite	Holds if there is an assignment to property `propName` on this node, and the right hand side of the assignment is `rhs`.
track	Gets a node that this node may flow to using one heap and/or interprocedural step.

Inherited predicates

accessesGlobal	Holds if this data flow node accesses the global variable `g`, either directly or through the `window` object.	from Node
analyze	Gets type inference results for this data flow node.	from Node
asExpr	Gets the expression corresponding to this data flow node, if any.	from Node
getABoundFunctionValue	Gets a function value that may reach this node, possibly derived from a partial function invocation.	from Node
getAFunctionValue	Gets a function value that may reach this node.	from Node
getAFunctionValue	Gets a function value that may reach this node with the given `imprecision` level.	from Node
getALocalSource	Gets a source node from which data may flow to this node in zero or more local steps.	from Node
getAPredecessor	Gets a data flow node from which data may flow to this node in one local step.	from Node
getASuccessor	Gets a data flow node to which data may flow from this node in one local step.	from Node
getAstNode	Gets the AST node corresponding to this data flow node, if any.	from Node
getBasicBlock	Gets the basic block to which this node belongs.	from Node
getContainer	Gets the container in which this node occurs.	from Node
getEnclosingExpr	Gets the expression enclosing this data flow node. In most cases the result is the same as `asExpr()`, however this method additionally includes the `InvokeExpr` corresponding to reflective calls.	from Node
getEndColumn	Gets the end column of this data flow node.	from Node
getEndLine	Gets the end line of this data flow node.	from Node
getFile	Gets the file this data flow node comes from.	from Node
getImmediatePredecessor	Gets the immediate predecessor of this node, if any.	from Node
getIntValue	Gets the integer value of this node, if it is an integer constant.	from Node
getLocation	Gets the location of this node.	from Node
getPostUpdateNode	Gets the post-update node corresponding to this node, if any.	from Node
getStartColumn	Gets the start column of this data flow node.	from Node
getStartLine	Gets the start line of this data flow node.	from Node
getStringValue	Gets the string value of this node, if it is a string literal or constant string concatenation.	from Node
getTopLevel	Gets the toplevel in which this node occurs.	from Node
hasLocationInfo	Holds if this element is at the specified location. The location spans column `startcolumn` of line `startline` to column `endcolumn` of line `endline` in file `filepath`. For more information, see Locations.	from Node
hasUnderlyingType	Holds if this node is annotated with the given named type, or is declared as a subtype thereof, or is a union or intersection containing such a type.	from Node
hasUnderlyingType	Holds if this node is annotated with the given named type, or is declared as a subtype thereof, or is a union or intersection containing such a type.	from Node
isIncomplete	Holds if the flow information for this node is incomplete.	from Node
mayHaveBooleanValue	Holds if this node may evaluate to the Boolean value `b`.	from Node
mayHaveStringValue	Holds if this node may evaluate to the string `s`, possibly through local data flow.	from Node
toString	Gets a textual representation of this element.	from Node