parsehelpers

Class LookUpTable

java.lang.Object

parsehelpers.LookUpTable

public class LookUpTable
extends Object

Class that implements a look up table for variables in all levels.

Author:

themis

Constructor Summary

Constructors

Constructor and Description
LookUpTable() Initializes this table.

Method Summary

Modifier and Type	Method and Description
void	addClassVariable(String variableName, String variableType) Adds a new class variable in this look up table.
void	addMethodVariable(String variableName, String variableType) Adds a new method variable in this look up table.
void	enterClass() Method that is called when entering a new class.
void	enterClass(String superClass) Method that is called when entering a new class.
void	enterMethod() Method that is called when entering a new method.
String	getSuperClass() Returns the super class of the class for which the look up table is created.
String	getTypeOfVariable(String variableName) Returns the type of a variable given its name.
String	toString() Returns a string representation of this look up table.

Methods inherited from class java.lang.Object

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

Constructor Detail

LookUpTable

public LookUpTable()

Initializes this table.

Method Detail

enterClass

public void enterClass()

Method that is called when entering a new class.

enterClass

public void enterClass(String superClass)

Method that is called when entering a new class.

Parameters:

superClass - the super class of the class that is entered.

enterMethod

public void enterMethod()

Method that is called when entering a new method.

addClassVariable

public void addClassVariable(String variableName,
                             String variableType)

Adds a new class variable in this look up table.

Parameters:

variableName - the name of the variable to be added.

variableType - the type of the variable that is added.

addMethodVariable

public void addMethodVariable(String variableName,
                              String variableType)

Adds a new method variable in this look up table.

Parameters:

variableName - the name of the variable to be added.

variableType - the type of the variable that is added.

getTypeOfVariable

public String getTypeOfVariable(String variableName)

Returns the type of a variable given its name. The method table is looked up first and then if the variable is not declared there, the variable is searched in class scope.

Parameters:

variableName - the name of the variable.

Returns:

the type of the variable given or "___" if the variable does not exist.

getSuperClass

public String getSuperClass()

Returns the super class of the class for which the look up table is created.

Returns:

the super class of the class for which the look up table is created.

toString

public String toString()

Returns a string representation of this look up table.

Overrides:

toString in class Object

Returns:

a string representation of this look up table.