cetus.hir
Class SimpleExpression

java.lang.Object
  cetus.hir.SimpleExpression

All Implemented Interfaces:

java.lang.Cloneable, java.lang.Comparable<SimpleExpression>, java.util.Comparator<SimpleExpression>

Direct Known Subclasses:

Symbolic

public class SimpleExpression
extends java.lang.Object
implements java.util.Comparator<SimpleExpression>, java.lang.Comparable<SimpleExpression>, java.lang.Cloneable

SimpleExpression is another form of representing an expression which is effective in symbolic manipulation. Expressions with commutative and associative operators are flattend for easier manipulation, and only a subset of the Cetus expressions is represented specifically with an abbreviated operator name. Other types are marked as general "TREE" whose children are recursively represented using SimpleExpression.

Field Summary

protected static int	ADD
protected static int	AND
protected static int	BAND
protected static int	BCMP
protected static int	BOR
protected static int	BXOR
protected static int	DISTRIBUTE
protected static int	DIV
protected static int	DIVIDE
protected static int	EQ
protected static int	FACTORIZE
protected static int	FOLD
protected static int	GE
protected static int	GT
protected static int	ID
protected static int	LE
protected static int	LEAF
protected static int	LIT
protected static int	LOGIC
protected static int	LT
protected static int	MAX
protected static int	MIN
protected static int	MOD
protected static int	MUL
protected static int	NE
protected static int	NEG
protected static int	OR
protected static int	SFTL
protected static int	SFTR
protected static SimpleExpression	sone
protected static SimpleExpression	szero
protected static int	TREE
protected static int	verbosity

Constructor Summary

protected	SimpleExpression()
protected	SimpleExpression(Expression e)
protected	SimpleExpression(int sop)
protected	SimpleExpression(SimpleExpression se)
protected	SimpleExpression(SimpleExpression se1, int op, SimpleExpression se2)

Method Summary

protected void	add(SimpleExpression se)
protected static SimpleExpression	add(SimpleExpression se1, SimpleExpression se2)
protected void	addAll(java.util.Collection<SimpleExpression> ses)
protected void	addAll(SimpleExpression se)
java.lang.Object	clone() Returns a clone of this simple expression.
int	compare(SimpleExpression se1, SimpleExpression se2) Returns if a simple expression is greater than, less than, or equal to the other.
int	compareTo(SimpleExpression se) Compares this simple expression with the given simple expression.
protected boolean	containsChildOfType(int op)
protected static SimpleExpression	divide(SimpleExpression se1, SimpleExpression se2)
boolean	equals(java.lang.Object o) Checks if this simple expression is equal to the given object.
protected static int	exchangeOp(int op)
protected static java.lang.Object	getCetusOP(int op)
protected SimpleExpression	getChild(int id)
protected java.util.List<SimpleExpression>	getChildren()
protected SimpleExpression	getCoef()
protected static SimpleExpression	getDouble(double num)
protected Expression	getExpression() Returns a reconstructed Cetus expression from the simple expression.
protected Expression	getExprRef()
protected static SimpleExpression	getInt(int num)
protected static SimpleExpression	getLCD(java.util.List<SimpleExpression> ses)
protected static SimpleExpression	getLCM(java.util.List<SimpleExpression> ses)
protected int	getOP()
protected static int	getOption()
protected int	getOrder()
protected SimpleExpression	getTerm()
protected java.lang.Double	getValue()
protected boolean	isCommAssoc()
protected boolean	isCompare()
protected static SimpleExpression	mod(SimpleExpression se1, SimpleExpression se2)
protected static SimpleExpression	multiply(SimpleExpression se1, SimpleExpression se2)
protected java.util.List<SimpleExpression>	multiplyByLCM()
protected static int	negateOp(int op)
protected SimpleExpression	normalize()
protected SimpleExpression	normalizeDivisible()
protected void	setChild(int id, SimpleExpression child)
protected static void	setOption(int opt)
protected void	sort()
protected static SimpleExpression	subtract(SimpleExpression se1, SimpleExpression se2)
protected SimpleExpression	toDivision()
java.lang.String	toString() Returns a string representation of the simple expression.

Methods inherited from class java.lang.Object

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

Field Detail

ADD

protected static final int ADD

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Constant Field Values

MUL

protected static final int MUL

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DIV

protected static final int DIV

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MOD

protected static final int MOD

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SFTL

protected static final int SFTL

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SFTR

protected static final int SFTR

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BAND

protected static final int BAND

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BOR

protected static final int BOR

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BXOR

protected static final int BXOR

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BCMP

protected static final int BCMP

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AND

protected static final int AND

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OR

protected static final int OR

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EQ

protected static final int EQ

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NE

protected static final int NE

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LE

protected static final int LE

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LT

protected static final int LT

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GE

protected static final int GE

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GT

protected static final int GT

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NEG

protected static final int NEG

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TREE

protected static final int TREE

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ID

protected static final int ID

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LIT

protected static final int LIT

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LEAF

protected static final int LEAF

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MIN

protected static final int MIN

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MAX

protected static final int MAX

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sone

protected static final SimpleExpression sone

szero

protected static final SimpleExpression szero

verbosity

protected static final int verbosity

FACTORIZE

protected static final int FACTORIZE

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FOLD

protected static final int FOLD

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DISTRIBUTE

protected static final int DISTRIBUTE

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DIVIDE

protected static final int DIVIDE

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LOGIC

protected static final int LOGIC

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Constructor Detail

SimpleExpression

protected SimpleExpression()

SimpleExpression

protected SimpleExpression(int sop)

SimpleExpression

protected SimpleExpression(SimpleExpression se)

SimpleExpression

protected SimpleExpression(SimpleExpression se1,
                           int op,
                           SimpleExpression se2)

SimpleExpression

protected SimpleExpression(Expression e)

Method Detail

add

protected void add(SimpleExpression se)

addAll

protected void addAll(java.util.Collection<SimpleExpression> ses)

addAll

protected void addAll(SimpleExpression se)

getInt

protected static SimpleExpression getInt(int num)

getDouble

protected static SimpleExpression getDouble(double num)

toString

public java.lang.String toString()

Returns a string representation of the simple expression.

Overrides:

toString in class java.lang.Object

Returns:

the string representation.

getExpression

protected Expression getExpression()

Returns a reconstructed Cetus expression from the simple expression.

Returns:

the Cetus expression.

getChild

protected SimpleExpression getChild(int id)

setChild

protected void setChild(int id,
                        SimpleExpression child)

setOption

protected static void setOption(int opt)

isCommAssoc

protected boolean isCommAssoc()

isCompare

protected boolean isCompare()

containsChildOfType

protected boolean containsChildOfType(int op)

compareTo

public int compareTo(SimpleExpression se)

Compares this simple expression with the given simple expression.

Specified by:

compareTo in interface java.lang.Comparable<SimpleExpression>

Parameters:

the - given simple expression.

Returns:

the result of Expression.compareTo(Expression).

clone

public java.lang.Object clone()

Returns a clone of this simple expression.

Overrides:

clone in class java.lang.Object

Returns:

a clone object.

equals

public boolean equals(java.lang.Object o)

Checks if this simple expression is equal to the given object.

Specified by:

equals in interface java.util.Comparator<SimpleExpression>

Overrides:

equals in class java.lang.Object

Parameters:

the - given object.

Returns:

true if it is, false otherwise.

compare

public int compare(SimpleExpression se1,
                   SimpleExpression se2)

Returns if a simple expression is greater than, less than, or equal to the other.

Specified by:

compare in interface java.util.Comparator<SimpleExpression>

Parameters:

se1 - the first simple expression.

se2 - the second simple expression.

Returns:

the comparison result (-1, 0, 1).

getTerm

protected SimpleExpression getTerm()

getValue

protected java.lang.Double getValue()

add

protected static SimpleExpression add(SimpleExpression se1,
                                      SimpleExpression se2)

subtract

protected static SimpleExpression subtract(SimpleExpression se1,
                                           SimpleExpression se2)

multiply

protected static SimpleExpression multiply(SimpleExpression se1,
                                           SimpleExpression se2)

divide

protected static SimpleExpression divide(SimpleExpression se1,
                                         SimpleExpression se2)

mod

protected static SimpleExpression mod(SimpleExpression se1,
                                      SimpleExpression se2)

sort

protected void sort()

getCoef

protected SimpleExpression getCoef()

normalize

protected SimpleExpression normalize()

getLCM

protected static SimpleExpression getLCM(java.util.List<SimpleExpression> ses)

getLCD

protected static SimpleExpression getLCD(java.util.List<SimpleExpression> ses)

multiplyByLCM

protected java.util.List<SimpleExpression> multiplyByLCM()

normalizeDivisible

protected SimpleExpression normalizeDivisible()

toDivision

protected SimpleExpression toDivision()

negateOp

protected static int negateOp(int op)

exchangeOp

protected static int exchangeOp(int op)

getOption

protected static int getOption()

getOrder

protected int getOrder()

getExprRef

protected Expression getExprRef()

getOP

protected int getOP()

getChildren

protected java.util.List<SimpleExpression> getChildren()

getCetusOP

protected static java.lang.Object getCetusOP(int op)