Expression (EASy-Producer Documentation API)

java.lang.Object
- net.ssehub.easy.instantiation.core.model.expressions.Expression

Direct Known Subclasses:

AbstractCallExpression, AbstractRuleMatchExpression, AlternativeExpression, CompositeExpression, ConstantExpression, ContainerInitializerExpression, DeferredResolvableOperationExpression, ExpressionEvaluator, FieldAccessExpression, InContentExpression, InPlaceCommand, JoinExpression, MapExpression, MultiAndExpression, ParenthesisExpression, ResolvableOperationExpression, StringExpression, ValueAssignmentExpression, VariableExpression, VarModelIdentifierExpression, VilTypeExpression
```
public abstract class Expression
extends java.lang.Object
```
An expression used in the instantiation languages.

Author:

Holger Eichelberger

Constructor Summary

Constructors
Constructor Description

Expression()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract java.lang.Object`	`accept(IExpressionVisitor visitor)`	Visits the expression.
`abstract TypeDescriptor<?>`	`inferType()`	Infers the type of this expression including the type of the contained sub-expressions.
`boolean`	`replaceEmptyLine()`	In content replacement, replace an entire line if this expression is evaluated to an empty string.

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

- Constructor Detail
  - Expression
```
public Expression()
```
- Method Detail
  - inferType
```
public abstract TypeDescriptor<?> inferType()
                                     throws VilException
```
    Infers the type of this expression including the type of the contained sub-expressions.
    
    Returns:
    
    the type of this expression
    
    Throws:
    
    VilException - in case that inferring the type fails
  - accept
```
public abstract java.lang.Object accept(IExpressionVisitor visitor)
                                 throws VilException
```
    Visits the expression.
    
    Parameters:
    
    visitor - the visitor
    
    Returns:
    
    the result of visiting this expression (may be null)
    
    Throws:
    
    VilException - in case that visiting fails (e.g., execution)
  - replaceEmptyLine
```
public boolean replaceEmptyLine()
```
    In content replacement, replace an entire line if this expression is evaluated to an empty string.
    
    Returns:
    
    true for replace entire line, false (default) else