Package net.ssehub.easy.varModel.cst

Class BlockExpression

java.lang.Object

net.ssehub.easy.varModel.cst.ConstraintSyntaxTree

net.ssehub.easy.varModel.cst.BlockExpression

All Implemented Interfaces:

IAttributeAccess

public class BlockExpression
extends ConstraintSyntaxTree

Represents a block of expressions. The type of the block as well as its value are determined by the last (non-comment) expression in the block.

Author:

Holger Eichelberger

Field Summary

Fields

Modifier and Type	Field	Description
private ConstraintSyntaxTree[]	exprs
private IDatatype	type

Constructor Summary

Constructors

Constructor	Description
BlockExpression(ConstraintSyntaxTree[] exprs)	Creates a block expression.

Method Summary

Modifier and Type	Method	Description
void	accept(IConstraintTreeVisitor visitor)	Visiting method for the visitor.
ConstraintSyntaxTree	getExpression(int index)	Returns the specified expression.
int	getExpressionCount()	Returns the number of expressions.
IDatatype	inferDatatype()	Infers the datatype of the subtree represented by this object.

Methods inherited from class net.ssehub.easy.varModel.cst.ConstraintSyntaxTree

getAttribute, getAttribute, getAttributesCount, getContainedType, getName, getParent, isSemanticallyEqual

Methods inherited from class java.lang.Object

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

Field Details

exprs

private ConstraintSyntaxTree[] exprs

type

private IDatatype type

Constructor Details

BlockExpression

public BlockExpression(ConstraintSyntaxTree[] exprs)
                throws CSTSemanticException

Creates a block expression.

Parameters:

exprs - the expressions in the block

Throws:

CSTSemanticException - in case that no expressions are given

Method Details

getExpressionCount

public int getExpressionCount()

Returns the number of expressions.

Returns:

the number of expressions

getExpression

public ConstraintSyntaxTree getExpression(int index)

Returns the specified expression.

Parameters:

index - the index of the expression

Returns:

the specified index

Throws:

IndexOutOfBoundsException - if index<0 || index>=getExpressionCount()

accept

public void accept(IConstraintTreeVisitor visitor)

Description copied from class: ConstraintSyntaxTree

Visiting method for the visitor.
This method is used for saving this model element.

Specified by:

accept in class ConstraintSyntaxTree

Parameters:

visitor - The visitor, which should save this model element.

inferDatatype

public IDatatype inferDatatype()
                        throws CSTSemanticException

Description copied from class: ConstraintSyntaxTree

Infers the datatype of the subtree represented by this object.

Specified by:

inferDatatype in class ConstraintSyntaxTree

Returns:

the data type

Throws:

CSTSemanticException - Will be thrown if parameters of (sub-) trees do not fit together.