Class Expr

An expression. Either an access (Access), a call (Call), an object or collection initializer (ObjectOrCollectionInitializer), a delegate creation (DelegateCreation), an array initializer (ArrayInitializer), an array creation (ArrayCreation), an anonymous function (AnonymousFunctionExpr), a local variable declaration (LocalVariableDeclExpr), an operation (Operation), a parenthesized expression (ParenthesizedExpr), a checked expression (CheckedExpr), an unchecked expression (UncheckedExpr), an is expression (IsExpr), an as expression (AsExpr), a cast (CastExpr), a typeof expression (TypeofExpr), a default expression (DefaultValueExpr), an await expression (AwaitExpr), a nameof expression (NameOfExpr), an interpolated string (InterpolatedStringExpr), a qualifiable expression (QualifiableExpr), or a literal (Literal).

Import path


                                import csharp

Direct supertypes

Indirect supertypes

Known direct subtypes

Predicates

getALocation	Gets a location of this element, including sources and assemblies.
getAnnotatedType	Gets the annotated type of this expression.
getEnclosingCallable	Gets the enclosing callable of this expression, if any.
getEnclosingStmt	Gets the enclosing statement of this expression, if any.
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"`.
getParent
getType	Gets the type of this expression.
getValue	Gets the value of this expression, if any
hasMaybeNullFlowState	Holds if the nullable flow state of this expression may be null.
hasNotNullFlowState	Holds if the nullable flow state of this expression is not null.
isImplicit	Holds if this expression is generated by the compiler and does not appear explicitly in the source code.
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`.
stripImplicitCasts	Gets an expression that is the result of stripping (recursively) all implicit casts from this expression, if any.

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
getAPrimaryQlClass	Gets the name of a primary CodeQL class to which this element belongs.	from Element
getAReachableElement	Gets an element that is reachable from this element.	from ControlFlowElement
getAssembly	Gets the assembly that this element was compiled into.	from ControlFlowElement
getChild	Gets the `i`th child of this element (zero-based).	from ExprOrStmtParent
getChildExpr	Gets the `i`th child expression of this element (zero-based).	from ExprOrStmtParent
getChildStmt	Gets the `i`th child statement of this element (zero-based).	from ExprOrStmtParent
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
getLanguage	Gets the “language” of this program element, as defined by the extension of the filename. For example, C# has language “cs”, and Visual Basic has language “vb”.	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
getPrimaryQlClasses	Gets a comma-separated list of the names of the primary CodeQL classes to which this element belongs.	from Element
hasValue	Holds if this expression has a value.	from Expr
isLive	Holds if this element is live, that is this element can be reached from the entry point of its enclosing callable.	from ControlFlowElement
reachableFrom	Holds if the current element is reachable from `src`.	from ControlFlowElement
toString	Gets a textual representation of this element.	from Element
toStringWithTypes	Gets the full textual representation of this element, including type information.	from Element