CodeQL library for C#
codeql/csharp-all 3.1.2-dev (changelog, source)
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Class VirtualEventAccess

An access to a virtual event - an event that is virtual or defined in an interface. For example, the accesses to Click on lines 7 and 8 in

class C {
  public delegate void EventHandler(object sender, object e);

  public virtual event EventHandler Click;

  protected void OnClick(object e) {
    if (Click != null)
      Click(this, e);
  }
}

Import path

import csharp

Direct supertypes

Indirect supertypes

Inherited predicates

controlsBlock

Holds if basic block controlled is controlled by this control flow element with conditional value s. That is, controlled can only be reached from the callable entry point by going via the s edge out of some basic block ending with this element.

from ControlFlowElement
fromLibrary

Holds if this element is from an assembly.

from Element
fromSource

Holds if this element is from source code.

from Element
getAChild

Gets a child of this element, if any.

from Element
getAChildExpr

Gets a child expression of this element, if any.

from ExprOrStmtParent
getAChildStmt

Gets a child statement of this element, if any.

from ExprOrStmtParent
getAControlFlowEntryNode

Gets a first control flow node executed within this element.

from ControlFlowElement
getAControlFlowExitNode

Gets a potential last control flow node executed within this element.

from ControlFlowElement
getAControlFlowNode

Gets a control flow node for this element. That is, a node in the control flow graph that corresponds to this element.

from ControlFlowElement
getALocation

Gets a location of this element, including sources and assemblies.

from Expr
getAPrimaryQlClass

Gets the name of a primary CodeQL class to which this element belongs.

from EventAccess
getAReachableElement

Gets an element that is reachable from this element.

from ControlFlowElement
getAnnotatedType

Gets the annotated type of this expression.

from Expr
getAssembly

Gets the assembly that this element was compiled into.

from ControlFlowElement
getChild

Gets the ith child of this element (zero-based).

from ExprOrStmtParent
getChildExpr

Gets the ith child expression of this element (zero-based).

from ExprOrStmtParent
getChildStmt

Gets the ith child statement of this element (zero-based).

from ExprOrStmtParent
getEnclosingCallable

Gets the enclosing callable of this expression, if any.

from Expr
getEnclosingStmt

Gets the enclosing statement of this expression, if any.

from Expr
getEvent

Gets the target of this event access.

from EventAccessExpr
getExplicitArgumentName

Gets the explicit parameter name used to pass this expression as an argument for, if any. For example, if this expression is 0 in M(second: 1, first: 0) then the result is "first".

from Expr
getFile

Gets the file containing this element.

from Element
getIndex

Gets the index of this element among its parent’s other children (zero-based).

from Element
getLocation

Gets the location of this element. Where an element has locations in source and assemblies, choose the source location. If there are multiple assembly locations, choose only one.

from Element
getNumberOfChildren

Gets the number of children of this element.

from Element
getParent

Gets the parent of this expression. This is for example the element that uses the result of this expression.

from Expr
getPrimaryQlClasses

Gets a comma-separated list of the names of the primary CodeQL classes to which this element belongs.

from Element
getQualifiedDeclaration

Gets the declaration targeted by this expression, for example a method or a field.

from MemberAccess
getQualifier

Gets the qualifier of this expression, if any.

from QualifiableExpr
getTarget

Gets the target of this access.

from EventAccess
getType

Gets the type of this expression.

from Expr
getValue

Gets the value of this expression, if any

from Expr
hasImplicitThisQualifier

Holds if this expression has an implicit this qualifier.

from MemberAccess
hasMaybeNullFlowState

Holds if the nullable flow state of this expression may be null.

from Expr
hasNotNullFlowState

Holds if the nullable flow state of this expression is not null.

from Expr
hasQualifier

Holds if this expression is qualified.

from QualifiableExpr
hasThisQualifier

Holds if this call has an implicit or explicit this qualifier.

from QualifiableExpr
hasValue

Holds if this expression has a value.

from Expr
isConditional

Holds if this expression has a conditional qualifier ?.

from QualifiableExpr
isImplicit

Holds if this expression is generated by the compiler and does not appear explicitly in the source code.

from Expr
isInArgument

Holds if this access passes the assignable being accessed as an in argument in a method call.

from AssignableAccess
isLive

Holds if this element is live, that is this element can be reached from the entry point of its enclosing callable.

from ControlFlowElement
isOutArgument

Holds if this access passes the assignable being accessed as an out argument in a method call.

from AssignableAccess
isOutOrRefArgument

Holds if this access passes the assignable being accessed as an out or a ref argument in a method call.

from AssignableAccess
isRefArgument

Holds if this access passes the assignable being accessed as a ref argument in a method call.

from AssignableAccess
reachableFrom

Holds if the current element is reachable from src.

from ControlFlowElement
stripCasts

Gets an expression that is the result of stripping (recursively) all implicit and explicit casts from this expression, if any. For example, the result is reader if this expression is either (IDisposable)reader or reader as IDisposable.

from Expr
stripImplicitCasts

Gets an expression that is the result of stripping (recursively) all implicit casts from this expression, if any.

from Expr
targetIsLocalInstance

Holds if the target of this expression is a local instance. That is, either the (implicit) qualifier is this or the qualifier is base.

from QualifiableExpr
targetIsOverridableOrImplementable

Holds if the target of this expression can be overridden or implemented.

from QualifiableExpr
targetIsThisInstance

Holds if this expression is equivalent to a this-qualified version of this expression

from QualifiableExpr
toString

Gets a textual representation of this element.

from EventAccessExpr
toStringWithTypes

Gets the full textual representation of this element, including type information.

from Element

Charpred