org.expressionj.expr

Class ExprArrayAffect

java.lang.Object

org.expressionj.model.AbstractExpression

org.expressionj.expr.AbstractUnaryExpression

org.expressionj.expr.AbstractAssignment

org.expressionj.expr.ExprArrayAffect

All Implemented Interfaces:

java.lang.Cloneable, Expression, ExpressionType, UnaryExpression

public class ExprArrayAffect
extends AbstractAssignment

An affectation expression for an array.

Field Summary

Fields

Modifier and Type	Field and Description
protected Expression	index
protected Variable	var

Fields inherited from class org.expressionj.expr.AbstractAssignment

isLocal

Fields inherited from class org.expressionj.expr.AbstractUnaryExpression

expr

Fields inherited from class org.expressionj.model.AbstractExpression

block, root

Fields inherited from interface org.expressionj.model.ExpressionType

STRUCT_ARRAY, STRUCT_SCALAR, STRUCT_STRUCTURE, TYPE_BOOL, TYPE_DYNAMIC, TYPE_FLOAT, TYPE_INTEGER, TYPE_NUMERIC, TYPE_STRING, TYPE_UNDEF

Constructor Summary

Constructors

Constructor and Description
ExprArrayAffect(Expression root)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
java.lang.Object	eval() Evaluate the expression.
boolean	evalAsBoolean() Evaluate the expression as a boolean.
float	evalAsFloat() Evaluate the expression as a float.
int	evalAsInt() Evaluate the expression as an int.
Variable	getArray()
Expression	getExpression() Return the associated expression.
java.lang.String	getExpressionName() Return the expression name.
Expression	getIndex() Return the index of the array to assign.
short	getResultStructure() Return the structure of the result for the expression.
short	getResultType() Return the type of the result for the expression.
Variable	getVariable(java.lang.String varName) Return a variable declared by the expression.
void	setArray(Variable var)
void	setExpression(Expression expr)
void	setIndex(Expression index) Set the index of the array to assign.

Methods inherited from class org.expressionj.expr.AbstractAssignment

addLocalVariable, addLocalVariable, addVariable, addVariable, isCreated, isLocal

Methods inherited from class org.expressionj.expr.AbstractUnaryExpression

getVariables

Methods inherited from class org.expressionj.model.AbstractExpression

getParentBlock, getRoot, setParentBlock, setRoot

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.expressionj.model.Expression

getLocalVariable, getLocalVariables, getParentBlock, getRoot, getVariable, getVariables, hasVariable, hasVariable, removeVariable, setParentBlock

Field Detail

var

protected Variable var

index

protected Expression index

Constructor Detail

ExprArrayAffect

public ExprArrayAffect(Expression root)

Method Detail

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Specified by:

clone in interface Expression

Specified by:

clone in class AbstractExpression

Throws:

java.lang.CloneNotSupportedException

getIndex

public Expression getIndex()

Return the index of the array to assign.

Returns:

the index

setIndex

public void setIndex(Expression index)

Set the index of the array to assign.

Parameters:

index - the index

getArray

public Variable getArray()

setArray

public void setArray(Variable var)

getResultType

public short getResultType()

Description copied from interface: Expression

Return the type of the result for the expression. The type can be:

• ExpressionType.TYPE_INTEGER: integer
• ExpressionType.TYPE_FLOAT: float
• ExpressionType.TYPE_NUMERIC: integer or float value. The runtime actual type may depend on the expression arguments
• ExpressionType.TYPE_STRING: string
• ExpressionType.TYPE_DYNAMIC: dynamic type. The runtime actual type may depend on the expression arguments
• ExpressionType.TYPE_UNDEF: undefined type. The default type, characteristic of an error if entountered.

Returns:

the type of the result for the expression

getResultStructure

public short getResultStructure()

Description copied from interface: Expression

Return the structure of the result for the expression. The structure can be:

• ExpressionType.STRUCT_SCALAR: a scalar value
• ExpressionType.STRUCT_ARRAY: an array value

Returns:

he structure of the result for the expression

getVariable

public Variable getVariable(java.lang.String varName)

Description copied from interface: Expression

Return a variable declared by the expression.

Parameters:

varName - the variable name

Returns:

the variable

setExpression

public void setExpression(Expression expr)

getExpression

public Expression getExpression()

Description copied from interface: Expression

Return the associated expression. Return this by default.

Returns:

the associated expression

evalAsFloat

public float evalAsFloat()

Description copied from interface: Expression

Evaluate the expression as a float. The result of the evaluation will be the same as Expression.eval(), but the evaluation engine will be able to optimize the computation by knwoing that the result is a float (primitive valeus are cached internally).

Specified by:

evalAsFloat in interface Expression

Overrides:

evalAsFloat in class AbstractExpression

Returns:

the result as a float

evalAsInt

public int evalAsInt()

Description copied from interface: Expression

Evaluate the expression as an int. The result of the evaluation will be the same as Expression.eval(), but the evaluation engine will be able to optimize the computation by knwoing that the result is an int (primitive valeus are cached internally).

Specified by:

evalAsInt in interface Expression

Overrides:

evalAsInt in class AbstractExpression

Returns:

the result as an int

evalAsBoolean

public boolean evalAsBoolean()

Description copied from interface: Expression

Evaluate the expression as a boolean. The result of the evaluation will be the same as Expression.eval(), but the evaluation engine will be able to optimize the computation by knwoing that the result is a boolean (primitive valeus are cached internally).

Specified by:

evalAsBoolean in interface Expression

Overrides:

evalAsBoolean in class AbstractExpression

Returns:

the result as a boolean

eval

public java.lang.Object eval()

Description copied from interface: Expression

Evaluate the expression.

Returns:

the result

getExpressionName

public java.lang.String getExpressionName()

Description copied from interface: Expression

Return the expression name.

Returns:

the expression name