org.expressionj.expr

Class ExprArray

java.lang.Object

org.expressionj.model.AbstractExpression

org.expressionj.expr.ExprArray

All Implemented Interfaces:

java.lang.Cloneable, Expression, ExpressionType, MultipleAryExpression

public class ExprArray
extends AbstractExpression
implements MultipleAryExpression

Represent an array creation expression.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List<Expression>	exprs

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
ExprArray(Expression root)

Method Summary

Modifier and Type	Method and Description
void	addExpression(Expression expr)
java.lang.Object	clone()
java.lang.Object	eval() Evaluate the expression.
java.lang.String	getExpressionName() Return the expression name.
java.util.List<Expression>	getExpressions()
short	getResultStructure() Return the structure of the result for the expression.
short	getResultType() Return the type of the result for the expression.
java.util.Map<java.lang.String,Variable>	getVariables() Return the variables used by this expression.
void	setExpressions(java.util.List<Expression> exprs)

Methods inherited from class org.expressionj.model.AbstractExpression

evalAsBoolean, evalAsFloat, evalAsInt, 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

evalAsBoolean, evalAsFloat, evalAsInt, getExpression, getLocalVariable, getLocalVariables, getParentBlock, getRoot, getVariable, getVariable, getVariables, hasVariable, hasVariable, removeVariable, setParentBlock

Field Detail

exprs

protected java.util.List<Expression> exprs

Constructor Detail

ExprArray

public ExprArray(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

getExpressionName

public java.lang.String getExpressionName()

Description copied from interface: Expression

Return the expression name.

Specified by:

getExpressionName in interface Expression

Returns:

the expression name

addExpression

public void addExpression(Expression expr)

Specified by:

addExpression in interface MultipleAryExpression

setExpressions

public void setExpressions(java.util.List<Expression> exprs)

Specified by:

setExpressions in interface MultipleAryExpression

eval

public final java.lang.Object eval()
                            throws java.lang.ArithmeticException

Description copied from interface: Expression

Evaluate the expression.

Specified by:

eval in interface Expression

Returns:

the result

Throws:

java.lang.ArithmeticException

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.

Specified by:

getResultType in interface Expression

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

Specified by:

getResultStructure in interface Expression

Returns:

he structure of the result for the expression

getExpressions

public java.util.List<Expression> getExpressions()

Specified by:

getExpressions in interface MultipleAryExpression

getVariables

public java.util.Map<java.lang.String,Variable> getVariables()

Description copied from interface: Expression

Return the variables used by this expression. Note that this method will not return any internal variables declared by the expression. For example, in the following expression: int c=a+b, only "a" and "b" will be returned.

Specified by:

getVariables in interface Expression

Returns:

the variables used by this expression