Analitza::Expression Class Reference

#include <expression.h>

Public Types
typedef void(*	CustomObjectDestructor )(const QVariant &)

Public Member Functions
	Expression ()
	Expression (const Expression &e)
	Expression (const Cn &e)
	Expression (Object *o)
	Expression (const QString &exp, bool mathml=false)
	~Expression ()
void	addError (const QString &error)
QStringList	bvarList () const
void	clear ()
QStringList	comments () const
QVariant	customObjectValue () const
Expression	declarationValue () const
Expression	elementAt (int position) const
Expression	equationToFunction () const
QStringList	error () const
bool	isCorrect () const
bool	isCustomObject () const
bool	isDeclaration () const
bool	isEquation () const
bool	isLambda () const
bool	isList () const
bool	isReal () const
bool	isString () const
bool	isVector () const
Expression	lambdaBody () const Q_REQUIRED_RESULT
QString	name () const
bool	operator!= (const Expression &e) const
Expression	operator= (const Expression &e)
bool	operator== (const Expression &e) const
QList< Ci * >	parameters () const
void	renameArgument (int depth, const QString &newName)
void	setElementAt (int position, const Analitza::Expression &exp)
bool	setMathML (const QString &exp)
bool	setText (const QString &exp)
void	setTree (Object *o)
QString	stringValue () const
QList< Expression >	toExpressionList () const
QString	toHtml () const
QString	toMathML () const
QString	toMathMLPresentation () const
Cn	toReal () const
QString	toString () const
const Object *	tree () const
Object *	tree ()

Static Public Member Functions
static void	computeDepth (Object *o)
static Expression	constructCustomObject (const QVariant &custom, Analitza::Expression::CustomObjectDestructor d)
static Expression	constructList (const QList< Expression > &exps)
static Expression	constructString (const QString &str)
static bool	isCompleteExpression (const QString &exp, bool justempty=false)
static bool	isMathML (const QString &s)
static enum Object::ObjectType	whatType (const QString &tag)

Detailed Description

Represents a mathematical expression.

Expression let to convert it to string, MathML and make some little queries to it, without calculating anything.

Definition at line 45 of file expression.h.

Member Typedef Documentation

typedef void(* Analitza::Expression::CustomObjectDestructor)(const QVariant &)

Definition at line 48 of file expression.h.

Constructor & Destructor Documentation

Analitza::Expression::Expression

(

)

Constructs an empty Expression.

Analitza::Expression::Expression

(

const Expression &

e

)

Copy constructor, copies the whole object to the constructed one.

Analitza::Expression::Expression

(

const Cn &

e

)

Creates an expression from a value.

Analitza::Expression::Expression ( Object *  o )

explicit

Analitza::Expression::Expression ( const QString &  exp, bool  mathml = false  )

explicit

Constructor.

Parses an expression and creates the object.

Parameters

exp	expression to be assigned
mathml	format of the expression

Analitza::Expression::~Expression

(

)

Destructor.

Member Function Documentation

void Analitza::Expression::addError

(

const QString &

error

)

Adds a new error error to the expression, to be reported afterwards.

QStringList Analitza::Expression::bvarList

(

)

const

Returns

Lists the global bounded variables in the expression

void Analitza::Expression::clear

(

)

Invalidates the data of the expression.

QStringList Analitza::Expression::comments

(

)

const

static void Analitza::Expression::computeDepth ( Object *  o )

static

static Expression Analitza::Expression::constructCustomObject ( const QVariant &  custom, Analitza::Expression::CustomObjectDestructor  d  )

static

creates an expression filled with just a custom object

static Expression Analitza::Expression::constructList ( const QList< Expression > &  exps )

static

Returns

an expression containing a list of every expression passed on exps on the form: list { exps[0], exps[1], ... }

static Expression Analitza::Expression::constructString ( const QString &  str )

static

creates an expression filled with just a string

QVariant Analitza::Expression::customObjectValue

(

)

const

In case it contains a custom object it returns its value.

Expression Analitza::Expression::declarationValue

(

)

const

Returns

the value of the declaration. If it's not a declaration then an expression it's returned.

Expression Analitza::Expression::elementAt

(

int

position

)

const

Returns the element at position in a vector.

Expression Analitza::Expression::equationToFunction

(

)

const

Returns

the expression that evaluates the current equation to equal 0

QStringList Analitza::Expression::error

(

)

const

Returns the list of errors that had experienced while building the expression.

static bool Analitza::Expression::isCompleteExpression ( const QString &  exp, bool  justempty = false  )

static

Returns

if a non-mathml expression is fully introduced (e.g. has closed all parentheses).

Parameters

justempty

tells if it's an expression with just spaces and comments

bool Analitza::Expression::isCorrect

(

)

const

Returns whether this is a correct expression.

bool Analitza::Expression::isCustomObject

(

)

const

Returns

true if the expression is a custom object, false otherwise.

bool Analitza::Expression::isDeclaration

(

)

const

Returns

whether it's a declaration

bool Analitza::Expression::isEquation

(

)

const

Returns

whether it's an equation

bool Analitza::Expression::isLambda

(

)

const

Returns whether it is a lambda-expression.

bool Analitza::Expression::isList

(

)

const

Returns whether it is a list expression.

static bool Analitza::Expression::isMathML ( const QString &  s )

inlinestatic

Returns

whether s is MathML or not. Very simple.

Definition at line 241 of file expression.h.

bool Analitza::Expression::isReal

(

)

const

Returns

true if the expression is a value, false otherwise.

bool Analitza::Expression::isString

(

)

const

Returns whether it is a string expression (a list of chars).

bool Analitza::Expression::isVector

(

)

const

Returns whether it is a vector expression.

Expression Analitza::Expression::lambdaBody

(

)

const

Returns the expression of the lambda body (without resolving the dependencies)

QString Analitza::Expression::name

(

)

const

Returns

the name of the expression. If it's not a declaration then an empty string it's returned.

bool Analitza::Expression::operator!=

(

const Expression &

e

)

const

Expression Analitza::Expression::operator=

(

const Expression &

e

)

Copy assignment.

Copies the e expression here.

bool Analitza::Expression::operator==

(

const Expression &

e

)

const

Returns whether the e is equal.

QList<Ci*> Analitza::Expression::parameters

(

)

const

Returns

a list of the parameters in case this expression represents a lambda construction.

void Analitza::Expression::renameArgument	(	int	depth,
		const QString &	newName
	)

renames the depth -th variable into newName

void Analitza::Expression::setElementAt	(	int	position,
		const Analitza::Expression &	exp
	)

sets an expression value value to a position

bool Analitza::Expression::setMathML

(

const QString &

exp

)

Sets an expression exp which is in MathML format.

Returns whether it was correctly assigned or not.

bool Analitza::Expression::setText

(

const QString &

exp

)

Sets an expression exp which is not in MathML format.

Returns whether it was correctly assigned or not.

void Analitza::Expression::setTree

(

Object *

o

)

QString Analitza::Expression::stringValue

(

)

const

Returns

the contained string value

QList<Expression> Analitza::Expression::toExpressionList

(

)

const

In case it was a vector or list, it returns a list of each expression on the vector.

QString Analitza::Expression::toHtml

(

)

const

Exports the expression to HTML.

QString Analitza::Expression::toMathML

(

)

const

Converts the expression to MathML.

QString Analitza::Expression::toMathMLPresentation

(

)

const

Converts the expression to MathML Presentation Markup.

Cn Analitza::Expression::toReal

(

)

const

Returns

Value representation of the expression.

QString Analitza::Expression::toString

(

)

const

Converts the expression to a string expression.

const Object* Analitza::Expression::tree

(

)

const

Returns the tree associated to this object.

Object* Analitza::Expression::tree

(

)

Returns the tree associated to this object.

static enum Object::ObjectType Analitza::Expression::whatType ( const QString &  tag )

static

Converts a tag to an object type.

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The documentation for this class was generated from the following file:

• expression.h