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Class DataFlow::PostUpdateNode

A node associated with an object after an operation that might have changed its state.

This can be either the argument to a callable after the callable returns (which might have mutated the argument), or the qualifier of a field after an update to the field.

Nodes corresponding to AST elements, for example ExprNode, usually refer to the value before the update with the exception of ClassInstanceExpr, which represents the value after the constructor has run.

Import path

import semmle.code.cpp.dataflow.DataFlow

Direct supertypes

Indirect supertypes

Known direct subtypes

    Predicates

    getFunction

    Gets the function to which this node belongs.

    getLocation

    Gets the location of this element.

    getPreUpdateNode

    Gets the node before the state update.

    getType

    Gets the type of this node.

    Inherited predicates

    asDefiningArgument

    Gets the argument that defines this DefinitionByReferenceNode, if any. This predicate should be used instead of asExpr when referring to the value of a reference argument after the call has returned. For example, in f(&x), this predicate will have &x as its result for the Node that represents the new value of x.

    from Node
    asExpr

    Gets the expression corresponding to this node, if any. This predicate only has a result on nodes that represent the value of evaluating the expression. For data flowing out of an expression, like when an argument is passed by reference, use asDefiningArgument instead of asExpr.

    from Node
    asParameter

    Gets the parameter corresponding to this node, if any.

    from Node
    asPartialDefinition

    Gets the expression that is partially defined by this node, if any.

    from Node
    asUninitialized

    Gets the uninitialized local variable corresponding to this node, if any.

    from Node
    getEnclosingCallable

    INTERNAL: Do not use. Alternative name for getFunction.

    from Node
    getTypeBound

    Gets an upper bound on the type of this node.

    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
    toString

    Gets a textual representation of this element.

    from Node