Package net.ssehub.easy.instantiation.core.model.templateModel

Class ContentLoopExpression

java.lang.Object

net.ssehub.easy.instantiation.core.model.expressions.Expression

net.ssehub.easy.instantiation.core.model.templateModel.InContentExpression

net.ssehub.easy.instantiation.core.model.templateModel.ContentLoopExpression

All Implemented Interfaces:

IExpressionIterator

public class ContentLoopExpression
extends InContentExpression
implements IExpressionIterator

Implements a content loop expression.

Author:

Holger Eichelberger

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.List<Expression>	body
private Expression	endSeparator
private Expression	init
private VariableDeclaration	iterator
private Expression	separator

Constructor Summary

Constructors

Constructor	Description
ContentLoopExpression(VariableDeclaration iterator, Expression init, Expression separator, Expression endSeparator, java.util.List<Expression> body)	Creates a content loop expression.

Method Summary

Modifier and Type	Method	Description
java.lang.Object	accept(IExpressionVisitor visitor)	Visits the expression.
private void	assertSeparatorEx(Expression ex, java.lang.String text)	Asserts that a separator expression evaluates to a String.
Expression	getEndSeparator()	Returns the optional end separator expression.
Expression	getExpression(int index)	Returns the specified body expression.
int	getExpressionsCount()	Returns the number of body expression.
Expression	getInit()	Returns the initialization expression.
VariableDeclaration	getIterator()	Returns the iterator declaration.
Expression	getSeparator()	Returns the optional separator expression.

Methods inherited from class net.ssehub.easy.instantiation.core.model.templateModel.InContentExpression

inferType, replaceEmptyLine

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

iterator

private VariableDeclaration iterator

init

private Expression init

separator

private Expression separator

endSeparator

private Expression endSeparator

body

private java.util.List<Expression> body

Constructor Detail

ContentLoopExpression

public ContentLoopExpression(VariableDeclaration iterator,
                             Expression init,
                             Expression separator,
                             Expression endSeparator,
                             java.util.List<Expression> body)
                      throws VilException

Creates a content loop expression.

Parameters:

iterator - the iterator

init - the initialization expression (shall/cannot be assigned to iterator as collection)

separator - the optional element separator (may be null)

endSeparator - the optional end separator (may be null)

body - the loop body

Throws:

VilException - if creation fails

Method Detail

assertSeparatorEx

private void assertSeparatorEx(Expression ex,
                               java.lang.String text)
                        throws VilException

Asserts that a separator expression evaluates to a String.

Parameters:

ex - the expression, may be null (ignored then)

text - text prefix if type assertion fails

Throws:

VilException - in case that obtaining the type fails

getIterator

public VariableDeclaration getIterator()

Returns the iterator declaration.

Returns:

the iterator declaration

getInit

public Expression getInit()

Returns the initialization expression.

Returns:

the initialization expression

getSeparator

public Expression getSeparator()

Returns the optional separator expression.

Returns:

the expression or null

getEndSeparator

public Expression getEndSeparator()

Returns the optional end separator expression.

Returns:

the expression or null

getExpressionsCount

public int getExpressionsCount()

Returns the number of body expression.

Specified by:

getExpressionsCount in interface IExpressionIterator

Returns:

the number of expressions

getExpression

public Expression getExpression(int index)

Returns the specified body expression.

Specified by:

getExpression in interface IExpressionIterator

Parameters:

index - the 0-based index of the expression

Returns:

the expression

Throws:

java.lang.IndexOutOfBoundsException - if index<0 || index>=#getBodyExpressionsCount()

accept

public java.lang.Object accept(IExpressionVisitor visitor)
                        throws VilException

Description copied from class: Expression

Visits the expression.

Specified by:

accept in class 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)