com.wewebu.expression.language

Class OwExprStaticArray

java.lang.Object

com.wewebu.expression.language.OwExprExpression

com.wewebu.expression.language.OwExprStaticArray

All Implemented Interfaces:

OwExprPrimaryPrefix, OwExprScope

public class OwExprStaticArray
extends OwExprExpression
implements OwExprPrimaryPrefix, OwExprScope

An expression representing a static array (inlined array value like {1,2,3} ).

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All rights reserved.

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Since:

version 1.1.0 and AWD 3.1.0.0

Field Summary

Fields inherited from class com.wewebu.expression.language.OwExprExpression

m_errorTable, m_symbolTable, m_typeError

Constructor Summary

Constructors

Constructor and Description
OwExprStaticArray(OwExprSymbolTable symbolTable_p, OwExprErrorTable errorTable_p)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(OwExprExpression expression_p) Parse time construction method.
OwExprProperty	at(int index_p) Indexed scope access method
OwExprValue	evaluate(OwExprScope scope_p) Evaluates this expression on the OwExprScope (scope) provided as argument.
OwExprExpression	expression()
OwExprFunction	function(String functionName_p, OwExprExpressionType[] argunmentTyes_p) Function access method.
boolean	hasProperty(String propertyName_p) Property access helper method.
int	length() Indexed scope access helper method
OwExprProperty	property(String propertyName_p) Property access method.
OwExprFunctionSymbol	regressToFunction() Forces this primary prefix symbol to a function.
OwExprPropertySymbol	regressToPorperty() Forces this primary prefix symbol to a property.
OwExprSymbolScope	regressToScope() Forces this primary prefix to a scope symbol.
String	toString()
OwExprExpressionType	type() Type check method.

Methods inherited from class com.wewebu.expression.language.OwExprExpression

errCount, evaluate, evaluate, getErrorTable, getSymbol, getSymbolTable, hasErrors, initType, symbolsVisibleInScopes

Methods inherited from class java.lang.Object

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

Constructor Detail

OwExprStaticArray

public OwExprStaticArray(OwExprSymbolTable symbolTable_p,
                 OwExprErrorTable errorTable_p)

Method Detail

add

public void add(OwExprExpression expression_p)

Parse time construction method.

Parameters:

expression_p - array item expression

evaluate

public OwExprValue evaluate(OwExprScope scope_p)
                     throws OwExprEvaluationException

Description copied from class: OwExprExpression

Evaluates this expression on the OwExprScope (scope) provided as argument.

Specified by:

evaluate in class OwExprExpression

Parameters:

scope_p - external scope to be used during evaluation

Returns:

the value resulted from the evaluation of this expression

Throws:

OwExprEvaluationException - in case of evaluation failure

type

public OwExprExpressionType type()
                          throws OwExprTypeMissmatchException

Description copied from class: OwExprExpression

Type check method. If type errors are encountered during type computation the OwExprExpression.m_typeError should be set to true

Specified by:

type in class OwExprExpression

Returns:

the expression type for this expression

Throws:

OwExprTypeMissmatchException - if type errors are encountered during type computation

expression

public OwExprExpression expression()

Specified by:

expression in interface OwExprPrimaryPrefix

Returns:

the expression represented by this primary prefix

regressToFunction

public OwExprFunctionSymbol regressToFunction()
                                       throws OwExprTypeMissmatchException

Description copied from interface: OwExprPrimaryPrefix

Forces this primary prefix symbol to a function.

Specified by:

regressToFunction in interface OwExprPrimaryPrefix

Returns:

the function symbol of this expression

Throws:

OwExprTypeMissmatchException - if a type mismatch is detected during function symbol creation

regressToPorperty

public OwExprPropertySymbol regressToPorperty()
                                       throws OwExprTypeMissmatchException

Description copied from interface: OwExprPrimaryPrefix

Forces this primary prefix symbol to a property.

Specified by:

regressToPorperty in interface OwExprPrimaryPrefix

Returns:

the property symbol of this expression

Throws:

OwExprTypeMissmatchException - if a type mismatch is detected during property symbol creation

regressToScope

public OwExprSymbolScope regressToScope()
                                 throws OwExprTypeMissmatchException

Description copied from interface: OwExprPrimaryPrefix

Forces this primary prefix to a scope symbol.

Specified by:

regressToScope in interface OwExprPrimaryPrefix

Returns:

the scope symbol of this expression

Throws:

OwExprTypeMissmatchException - if a type mismatch is detected during scope symbol creation

at

public OwExprProperty at(int index_p)
                  throws OwExprEvaluationException

Description copied from interface: OwExprScope

Indexed scope access method

Specified by:

at in interface OwExprScope

Parameters:

index_p - int index of the requested property

Returns:

the OwExprProperty property found at the requested index

Throws:

OwExprEvaluationException - if the requested indexed access has failed (index out of bounds, the creation of OwExprProperty has failed)

function

public OwExprFunction function(String functionName_p,
                      OwExprExpressionType[] argunmentTyes_p)
                        throws OwExprEvaluationException

Description copied from interface: OwExprScope

Function access method.

Specified by:

function in interface OwExprScope

Parameters:

functionName_p - the name of the requested function

argunmentTyes_p - array of OwExprExpressionType that defines the argument signature of the requested function

Returns:

an OwExprFunction with the requested name and argument signature residing in this scope

Throws:

OwExprEvaluationException - if the requested function is not found in this scope or the creation of the corresponding OwExprFunction has failed

hasProperty

public boolean hasProperty(String propertyName_p)
                    throws OwExprEvaluationException

Description copied from interface: OwExprScope

Property access helper method. Checks if a property is valid in this scope.

Specified by:

hasProperty in interface OwExprScope

Parameters:

propertyName_p - the name of the requested property

Returns:

true if this scope can perform property access for the requested property - an access via OwExprScope.property(String) will NOT fail on missing property grounds, false otherwise

Throws:

OwExprEvaluationException - if the property validity check has failed

length

public int length()
           throws OwExprEvaluationException

Description copied from interface: OwExprScope

Indexed scope access helper method

Specified by:

length in interface OwExprScope

Returns:

the maximum index range for which indexed access is possible in this scope

Throws:

OwExprEvaluationException

property

public OwExprProperty property(String propertyName_p)
                        throws OwExprEvaluationException

Description copied from interface: OwExprScope

Property access method.

Specified by:

property in interface OwExprScope

Parameters:

propertyName_p - the name of the requested property

Returns:

an OwExprProperty with the requested name residing in this scope

Throws:

OwExprEvaluationException - if the requested property is not found in this scope or the creation of the corresponding OwExprProperty has failed

toString

public String toString()

Overrides:

toString in class Object