AltIfExpressionNode (QDL root module 1.6.2.3 API)

java.lang.Object
- org.qdl_lang.expressions.ExpressionImpl
- - org.qdl_lang.expressions.AltIfExpressionNode

All Implemented Interfaces:

Serializable, ExpressionNode, ExpressionInterface, HasResultInterface, Statement
```
public class AltIfExpressionNode
extends ExpressionImpl
```
Created by Jeff Gaynor
on 5/27/21 at 5:13 PM

See Also:

Serialized Form

Field Summary
- Fields inherited from class org.qdl_lang.expressions.ExpressionImpl
  arguments, result, valence
- Fields inherited from interface org.qdl_lang.statements.ExpressionInterface
  ALL_INDICES_NODE, ALT_IF_NODE, ASSIGNMENT_NODE, AXIS_RESTRICTION_NODE, CLOSED_SLICE_NODE, COMPARISON_DYAD_NODE, CONSTANT_NODE, DYAD_NODE, DYADIC_FUNCTION_REFERENCE_NODE, EXPRESSION_STEM_NODE, EXPRESSION_STEM2_NODE, FUNCTION_REFERENCE_NODE, LAMBDA_DEFINITION_NODE, LIST_NODE, MODULE_NODE, MONAD_NODE, NILAD_NODE, OPEN_SLICE_NODE, PARENTHESIZED_NODE, PARSE_EXPRESSION_BLOCK_NODE, PARSE_STATEMENT_BLOCK_NODE, POLYAD_NODE, QDL_NULL_NODE, SELECT_NODE, SET_NODE, STEM_ENTRY_NODE, STEM_EXTRACTION_NODE, STEM_NODE, UNKNOWN_NODE, VARIABLE_NODE

Constructor Summary

Constructors
Constructor Description

AltIfExpressionNode()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`QDLValue`	`evaluate(State state)`
`ArrayList<ExpressionInterface>`	`getArguments()`
`ExpressionInterface`	`getELSE()`
`ExpressionInterface`	`getIF()`
`int`	`getNodeType()`	QDL is not strongly typed but Java is, so each node type should have a unique integer and conditionals should use that, not the instanceof operator.
`ExpressionInterface`	`getTHEN()`
`ExpressionInterface`	`makeCopy()`
`void`	`setELSE(ExpressionInterface x)`
`void`	`setIF(ExpressionInterface x)`
`void`	`setTHEN(ExpressionInterface x)`

Methods inherited from class org.qdl_lang.expressions.ExpressionImpl
addArgument, evalArg, evalLastArg, evaluatedArgs, getAlias, getArgAt, getArgCount, getEvaluatedArgs, getLastArg, getOperatorType, getResult, getResultType, getSourceCode, getTokenPosition, hasAlias, hasEvaluatedArgs, hasTokenPosition, isEvaluated, isSizeQuery, setAlias, setArguments, setEvaluated, setEvaluatedArgs, setOperatorType, setResult, setResult, setSizeQuery, setSourceCode, setTokenPosition, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - AltIfExpressionNode
```
public AltIfExpressionNode()
```
- Method Detail
  - getIF
```
public ExpressionInterface getIF()
```
  - setIF
```
public void setIF(ExpressionInterface x)
```
  - getTHEN
```
public ExpressionInterface getTHEN()
```
  - setTHEN
```
public void setTHEN(ExpressionInterface x)
```
  - getELSE
```
public ExpressionInterface getELSE()
```
  - setELSE
```
public void setELSE(ExpressionInterface x)
```
  - getArguments
```
public ArrayList<ExpressionInterface> getArguments()
```
    Specified by:
    
    getArguments in interface ExpressionNode
    
    Overrides:
    
    getArguments in class ExpressionImpl
  - evaluate
```
public QDLValue evaluate(State state)
```
  - makeCopy
```
public ExpressionInterface makeCopy()
```
  - getNodeType
```
public int getNodeType()
```
    Description copied from interface: ExpressionInterface
    
    QDL is not strongly typed but Java is, so each node type should have a unique integer and conditionals should use that, not the instanceof operator. This allows for efficient programming with switch statements rather than a bevy of conditionals (potentially each of which gets done even if the correct case has been handled).
    
    Returns: