SequenceExpression Class

A sequence expression object with references to child sequence expressions. A sequence expression is a side effect free computation returning a value (a query).

Inheritance Hierarchy

SystemObject
  de.unika.ipd.grGen.libGrSequenceBase
    de.unika.ipd.grGen.libGrSequenceComputation
      de.unika.ipd.grGen.libGrSequenceExpression
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Namespace: de.unika.ipd.grGen.libGr
Assembly: libGr (in libGr.dll) Version: GrGen.NET 7.2

Syntax

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public abstract class SequenceExpression : SequenceComputation

The SequenceExpression type exposes the following members.

Constructors

	Name	Description
	SequenceExpression(SequenceExpression)	Copy constructor.
	SequenceExpression(SequenceExpressionType)	Initializes a new SequenceExpression object with the given sequence expression type.

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Properties

	Name	Description
	Children	(Overrides SequenceComputationChildren.)
	ChildrenBase	(Inherited from SequenceComputation.)
	ChildrenExpression	Enumerates all child sequence expression objects
	ExecutionState	the state of executing this sequence base (a sequence base comprises sequences, sequence computations, sequence expressions) (Inherited from SequenceBase.)
	Id	returns the sequence /expresion id - every sequence /expression is assigned a unique id that is used in xgrs code generation and in sequence rendering for copies a new id is generated, too, this does not cause problems as code is only generated once per defined sequence (Inherited from SequenceBase.)
	Precedence	The precedence of this operator. Zero is the highest priority, int.MaxValue the lowest. Used to add needed parentheses for printing sequences /expressions TODO: WTF? das ist im Parser genau umgekehrt implementiert! (Inherited from SequenceBase.)
	ReturnsValue	(Overrides SequenceComputationReturnsValue.)
	Symbol	A string symbol representing this sequence /expression kind. (Inherited from SequenceBase.)

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Methods

	Name	Description
	Check	Checks the sequence computation for errors utilizing the given checking environment reports them by exception default behavior: check all the children (Inherited from SequenceComputation.)
	CheckBaseObjectTypeIsKnown	(Inherited from SequenceBase.)
	CheckEdgeTypeIsKnown	(Inherited from SequenceBase.)
	CheckGraphElementTypeIsKnown	(Inherited from SequenceBase.)
	CheckNodeTypeIsKnown	(Inherited from SequenceBase.)
	Contains	Returns whether the potentialChild is contained in this sequence (base). True if potentialChild is the same as this sequence (base) (so reflexive relation). (Inherited from SequenceBase.)
	Evaluate	Evaluates this sequence expression. Implemented by calling execute, every expression is a computation.
	Execute	Executes this sequence computation. (Inherited from SequenceComputation.)
	ExecuteImpl	Executes this sequence computation. This function represents the actual implementation of the sequence. (Inherited from SequenceComputation.)
	FireBeginExecutionEvent	(Inherited from SequenceBase.)
	FireEndExecutionEvent	(Inherited from SequenceBase.)
	FireEnteringSequenceEvent	(Inherited from SequenceBase.)
	FireExitingSequenceEvent	(Inherited from SequenceBase.)
	GetCurrentlyExecutedSequenceBase	Returns the innermost sequence base beneath this as root which gets currently executed (for sequences on call stack this is the call). A path in the sequence tree gets executed, the innermost is the important one. (Inherited from SequenceBase.)
	GetLocalVariables(DictionarySequenceVariable, SetValueType, ListSequenceExpressionConstructor)	Collects all variables of the sequence expression tree into the variables dictionary, and all container and internal object constructors used into the constructors array. (Inherited from SequenceComputation.)
	GetLocalVariables(DictionarySequenceVariable, SetValueType, ListSequenceExpressionConstructor, SequenceBase)	Walks the sequence tree from this on to the given target sequence base (inclusive), collecting all variables found on the way into the variables dictionary, and all container and object type constructors used into the constructors array. (Inherited from SequenceBase.)
	GetOperationType
	GetTypeString	(Inherited from SequenceBase.)
	HasSequenceType	(Overrides SequenceComputationHasSequenceType(SequenceType).)
	IsNumericType
	SetNeedForProfiling	sets for the very node the profiling flag (does not recurse) (Inherited from SequenceBase.)
	SetNeedForProfilingRecursive	sets for the node and all children, i.e. the entire tree the profiling flag (Inherited from SequenceBase.)
	Type	Returns the type of the sequence expression default behaviour: returns "boolean" (Overrides SequenceComputationType(SequenceCheckingEnvironment).)

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Fields

	Name	Description
	id	stores the sequence /expression unique id (Inherited from SequenceBase.)
	SequenceComputationType	The type of the sequence computation (e.g. Assignment or MethodCall) (Inherited from SequenceComputation.)
	SequenceExpressionType	The type of the sequence expression (e.g. Variable or IsVisited)

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Reference

de.unika.ipd.grGen.libGr Namespace

Inheritance Hierarchy