edu.ksu.cis.projects.bogor.ast
Class IfStatement

java.lang.Object
  edu.ksu.cis.projects.bogor.ast.Node
      edu.ksu.cis.projects.bogor.ast.Statement
          edu.ksu.cis.projects.bogor.ast.IfStatement

All Implemented Interfaces:

IExpParent, IStatementParent, Disposable, Serializable, Cloneable

public class IfStatement
extends Statement
implements IExpParent, IStatementParent

The if statement AST.

Version:

CVS $Revision: 1.4 $ $Date: 2005/05/01 20:03:26 $

Author:

Robby

See Also:

Serialized Form

Field Summary

protected Statement	elseStmt Holds the optional else's statement.
protected Exp	exp Holds the condition.
protected ArrayList<Exp>	exps Holds the optional elseif's conditions.
protected Statement	stmt Holds the statement.
protected ArrayList<Statement>	stmts Holds the optional elseif's statements.

Fields inherited from class edu.ksu.cis.projects.bogor.ast.Node

ILLEGAL_LOCAL_ID_CHAR

Constructor Summary

IfStatement(Exp exp, Statement stmt, List<? extends Exp> exps, List<? extends Statement> stmts, Statement elseStmt)
Default constructor.

Method Summary

IfStatement	clone() Clones this object (deep clone); including location info.
void	dispose() Disposes exp and stmt.
Statement	getElse() Gets the else statement.
Exp	getElseIfCondition(int index) Gets an elseif condition at a specified index.
int	getElseIfCount() Gets the number of elseifs.
Statement	getElseIfStatement(int index) Gets an elseif statement at a specified index.
Exp	getExp() Gets the condition.
Statement	getStatement() Gets the statement.
void	setElse(Statement stmt) Sets the else statement.
void	setElseIfs(List<? extends Exp> exps, List<? extends Statement> stmts) Sets the elseifs.
void	setExp(Exp exp) Sets the condition.
void	setStatement(Statement stmt) Sets the statement.
protected String	toString(String indent) Returns the string representation of this object.
void	visit(ASTVisitor visitor)

Methods inherited from class edu.ksu.cis.projects.bogor.ast.Statement

getParent, setParent, toString

Methods inherited from class edu.ksu.cis.projects.bogor.ast.Node

getLocationInfo, getProperty, putProperty, setLocationInfo

Methods inherited from class java.lang.Object

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

Field Detail

exp

protected Exp exp

Holds the condition. Must be non-null.

stmt

protected Statement stmt

Holds the statement. Must be non-null.

exps

protected ArrayList<Exp> exps

Holds the optional elseif's conditions. Must be non-null.

stmts

protected ArrayList<Statement> stmts

Holds the optional elseif's statements. Must be non-null.

elseStmt

protected Statement elseStmt

Holds the optional else's statement. Must be non-null.

Constructor Detail

IfStatement

public IfStatement(Exp exp,
                   Statement stmt,
                   List<? extends Exp> exps,
                   List<? extends Statement> stmts,
                   Statement elseStmt)

Default constructor. Sets this object as the stmt's parent. Sets this object as the exp's parent. Sets this object as the parent of each of the elseif's exp and stmt. Sets this object as the elseStmt's parent.

Parameters:

exp - The condition. Must be non-null.

stmt - The statement. Must be non-null.

exps - The elseif conditions. Must be either null or at least one element.

stmts - The elseif statements. Must agree with exps.

elseStmt - The else statement.

Method Detail

clone

public IfStatement clone()

Clones this object (deep clone); including location info.

Specified by:

clone in class Statement

Returns:

The clone of this object. Non-null.

dispose

public void dispose()

Disposes exp and stmt. Can be called repeatedly. Once called, avoid using this object.

Specified by:

dispose in interface Disposable

Overrides:

dispose in class Statement

getExp

public Exp getExp()

Gets the condition.

Returns:

The condition. Non-null.

setExp

public void setExp(Exp exp)

Sets the condition. Sets this object as the exp's parent.

Parameters:

exp - The condition. Must be non-null.

getStatement

public Statement getStatement()

Gets the statement.

Returns:

The statement. Non-null.

setStatement

public void setStatement(Statement stmt)

Sets the statement. Sets this object as the stmt's parent.

Parameters:

stmt - The statement. Must be non-null.

setElseIfs

public void setElseIfs(List<? extends Exp> exps,
                       List<? extends Statement> stmts)

Sets the elseifs. Sets this object as each of the exp's and stmt's parent.

Parameters:

exps - The conditions of the elseifs. Must be non-null. Each element must be non-null. There must be at least one element.

stmts - The statements of the elseifs. Must be non-null. Each element must be non-null. Should be the same size as exps.

getElseIfCondition

public Exp getElseIfCondition(int index)

Gets an elseif condition at a specified index.

Parameters:

index - The index of the the elseif's condition. Must be between 0 and getElseIfCount() - 1, inclusive.

Returns:

The elseif's condition at the given index. Non-null.

getElseIfStatement

public Statement getElseIfStatement(int index)

Gets an elseif statement at a specified index.

Parameters:

index - The index of the the elseif's statement. Must be between 0 and getElseIfCount() - 1, inclusive.

Returns:

The elseif's statement at the given index. Non-null.

getElseIfCount

public int getElseIfCount()

Gets the number of elseifs.

Returns:

The number of elseifs.

setElse

public void setElse(Statement stmt)

Sets the else statement.

Parameters:

stmt - The else statement. Must be non-null.

getElse

public Statement getElse()

Gets the else statement.

Returns:

The else statement.

visit

public void visit(ASTVisitor visitor)

Specified by:

visit in class Node

toString

protected String toString(String indent)

Returns the string representation of this object.

Specified by:

toString in class Statement

Parameters:

indent - The indentation for this statement.

Returns:

 
  
   
               "if exp1 do\n" + 
               "    stmt1\n" + 
               "elseif exp2 do\n" + 
               "    stmt2\n" + 
               "..." + 
               "elseif expN do\n" + 
               "    stmtN\n" + 
               "[else do\n" + 
               "    stmt\n]" + 
               "end\n".