Interface IExpressionVariableFacade

All Superinterfaces:

IVariableFacade

All Known Implementing Classes:

ExpressionVariableFacade

public interface IExpressionVariableFacade
extends IVariableFacade

Variable facade for variables that are defined by an expression tree, which can contain nested operators, references to other variables, inline constants and parameters. Expressions without parameters evaluate to the value of their root node, expressions with parameters evaluate to an operator. Simple expressions (a single operator with only variable references) are stored as IOperatorVariableFacade instead.

Nested Class Summary

Nested classes/interfaces inherited from interface IVariableFacade

IVariableFacade.IValidator

Method Summary

Modifier and Type	Method	Description
Expression	getExpression()
default Map<Integer, IValueType<?>>	getReferenceTypes()
default String	getText()

Methods inherited from interface IVariableFacade

appendHoverText, getClient, getId, getLabel, getOutputType, getVariable, isValid, validate

Method Details

getExpression

@Nullable
Expression getExpression()

Returns:

The expression, or null if the facade is invalid.

getReferenceTypes

default Map<Integer, IValueType<?>> getReferenceTypes()

Returns:

The output types of the referenced variables, by variable id, as far as they were known when this card was written. This is only used when editing the card, evaluation always uses the actual variables.

getText

@Nullable
default String getText()

Returns:

The text the expression was typed as, or null if it was not typed or is printed. This is only used when editing the card, and only while the text still reads as the expression.