SExpression Class Reference

The SExpression class. More...

#include <sexpression.h>

Collaboration diagram for SExpression:

Public Types
enum class	Mode
enum class	Type

Public Member Functions
	SExpression () noexcept
	SExpression (const SExpression &other) noexcept
	~SExpression () noexcept
const FilePath &	getFilePath () const noexcept
Type	getType () const noexcept
bool	isList () const noexcept
bool	isToken () const noexcept
bool	isString () const noexcept
bool	isLineBreak () const noexcept
const QString &	getName () const
const QString &	getValue () const
std::size_t	getChildCount () const noexcept
bool	containsChild (const SExpression &child) const noexcept
SExpression &	getChild (int index)
const SExpression &	getChild (int index) const
QList< SExpression * >	getChildren (Type type) noexcept
QList< const SExpression * >	getChildren (Type type) const noexcept
QList< SExpression * >	getChildren (const QString &name) noexcept
QList< const SExpression * >	getChildren (const QString &name) const noexcept
SExpression &	getChild (const QString &path)
	Get a child by path.
const SExpression &	getChild (const QString &path) const
SExpression *	tryGetChild (const QString &path) noexcept
	Try get a child by path.
const SExpression *	tryGetChild (const QString &path) const noexcept
void	setName (const QString &name)
void	setValue (const QString &value)
void	ensureLineBreak ()
SExpression &	appendList (const QString &name)
void	appendChild (std::unique_ptr< SExpression > child)
template<typename T >
SExpression &	appendChild (const T &obj)
void	appendChild (const QString &child, std::unique_ptr< SExpression > obj)
template<typename T >
SExpression &	appendChild (const QString &child, const T &obj)
void	removeChild (const SExpression &child)
void	removeChildrenWithNodeRecursive (const SExpression &search) noexcept
void	replaceRecursive (const SExpression &search, const SExpression &replace) noexcept
QByteArray	toByteArray (Mode mode=Mode::LibrePCB) const
bool	operator== (const SExpression &rhs) const noexcept
bool	operator!= (const SExpression &rhs) const noexcept
bool	operator< (const SExpression &rhs) const noexcept
SExpression &	operator= (const SExpression &rhs) noexcept

Static Public Member Functions
static std::unique_ptr< SExpression >	createList (const QString &name)
static std::unique_ptr< SExpression >	createToken (const QString &token)
static std::unique_ptr< SExpression >	createString (const QString &string)
static std::unique_ptr< SExpression >	createLineBreak ()
static std::unique_ptr< SExpression >	parse (const QByteArray &content, const FilePath &filePath, Mode mode=Mode::LibrePCB)

Private Member Functions
	SExpression (Type type, const QString &value)
bool	isMultiLine () const noexcept
QString	toString (int indent, Mode mode) const

Static Private Member Functions
static bool	skipLineBreaks (const std::vector< std::unique_ptr< SExpression > > &children, int &index) noexcept
static std::unique_ptr< SExpression >	parse (const QString &content, int &index, const FilePath &filePath, Mode mode)
static std::unique_ptr< SExpression >	parseList (const QString &content, int &index, const FilePath &filePath, Mode mode)
static QString	parseToken (const QString &content, int &index, const FilePath &filePath, Mode mode)
static QString	parseString (const QString &content, int &index, const FilePath &filePath)
static void	skipWhitespaceAndComments (const QString &content, int &index, bool skipNewline=false)
static QString	escapeString (const QString &string) noexcept
static bool	isValidToken (const QString &token, Mode mode) noexcept
static bool	isValidTokenChar (const QChar &c, Mode mode) noexcept

Private Attributes
Type	mType
QString	mValue
	either a list name, a token or a string
std::vector< std::unique_ptr< SExpression > >	mChildren
FilePath	mFilePath

Friends
uint	qHash (const SExpression &node, uint seed) noexcept

Detailed Description

The SExpression class.

Member Enumeration Documentation

Mode

enum class Mode

strong

Enumerator
LibrePCB	LibrePCB syntax (very strict)
Permissive	Compatibility with other tools (very permissive)

Type

enum class Type

strong

Enumerator
List	has a tag name and an arbitrary number of children
Token	values without quotes (e.g. -12.34)
String	values with double quotes (e.g. "Foo!")
LineBreak	manual line break inside a List

Constructor & Destructor Documentation

SExpression() [1/3]

SExpression ( )

noexcept

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SExpression() [2/3]

SExpression ( const SExpression &  other )

noexcept

~SExpression()

~SExpression ( )

noexcept

SExpression() [3/3]

SExpression ( Type  type, const QString &  value  )

private

Member Function Documentation

getFilePath()

const FilePath & getFilePath ( ) const

inlinenoexcept

getType()

Type getType ( ) const

inlinenoexcept

isList()

bool isList ( ) const

inlinenoexcept

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isToken()

bool isToken ( ) const

inlinenoexcept

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isString()

bool isString ( ) const

inlinenoexcept

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isLineBreak()

bool isLineBreak ( ) const

inlinenoexcept

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getName()

const QString & getName

(

)

const

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getValue()

const QString & getValue

(

)

const

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getChildCount()

std::size_t getChildCount ( ) const

inlinenoexcept

containsChild()

bool containsChild ( const SExpression &  child ) const

noexcept

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getChild() [1/4]

SExpression & getChild

(

int

index

)

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getChild() [2/4]

const SExpression & getChild

(

int

index

)

const

getChildren() [1/4]

QList< SExpression * > getChildren ( Type  type )

noexcept

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getChildren() [2/4]

QList< const SExpression * > getChildren ( Type  type ) const

noexcept

getChildren() [3/4]

QList< SExpression * > getChildren ( const QString &  name )

noexcept

getChildren() [4/4]

QList< const SExpression * > getChildren ( const QString &  name ) const

noexcept

getChild() [3/4]

SExpression & getChild

(

const QString &

path

)

Get a child by path.

This method allows to get a specific child, even nested child. Consider this S-Expression:

* (netsegment 3115f409-5e6c-4023-a8ab-06428ed0720a
*  (via 2cc45b07-1bef-4340-9292-b54b011c70c5
*   (position 35.91989 46.0375) (size 0.7) (drill 0.3) (shape round)
*  )
* )
* 

• To get the UUID of the net segment, use the path "@0" (first child).
• To get the whole "via" element (incl. children), use the path "via".
• To get the Y coordinate of the via, use the path "via/position/@1".

Attention

If there exist several childs with (the begin of) the specified path, only the first match is returned! So if the example above had more "via" elements, all after the first one would be ignored. And for example if the first "via" element had no "position" child, an exception is raised even if the following "via" elements do have a "position" child.

Note

In contrast to getChildren(), this method skips linebreak elements. So if you acces an element by index (e.g. "@3"), the n-th child which is not a linebreak will be returned.

Parameters

path	The path to the child to get, separated by forward slashes '/'. To specify a child by index, use '@' followed by the index (e.g. '@1' to get the second child).

Returns

A reference to the child of the specified path.

Exceptions

librepcb::Exception

if the specified child does not exist.

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getChild() [4/4]

const SExpression & getChild

(

const QString &

path

)

const

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tryGetChild() [1/2]

SExpression * tryGetChild ( const QString &  path )

noexcept

Try get a child by path.

This is exactly the same as getChild(), but returns nullptr if the specified child does not exist (instead of throwing an exception).

Parameters

path	See documentation of getChild().

Returns

A pointer to the child of the specified path, if found. If no such child exists, nullptr is returned.

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tryGetChild() [2/2]

const SExpression * tryGetChild ( const QString &  path ) const

noexcept

setName()

void setName

(

const QString &

name

)

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setValue()

void setValue

(

const QString &

value

)

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ensureLineBreak()

void ensureLineBreak

(

)

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appendList()

SExpression & appendList

(

const QString &

name

)

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appendChild() [1/4]

void appendChild

(

std::unique_ptr< SExpression >

child

)

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appendChild() [2/4]

template<typename T >

SExpression & appendChild ( const T &  obj )

inline

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appendChild() [3/4]

void appendChild ( const QString &  child, std::unique_ptr< SExpression >  obj  )

inline

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appendChild() [4/4]

template<typename T >

SExpression & appendChild ( const QString &  child, const T &  obj  )

inline

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removeChild()

void removeChild

(

const SExpression &

child

)

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removeChildrenWithNodeRecursive()

void removeChildrenWithNodeRecursive ( const SExpression &  search )

noexcept

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replaceRecursive()

void replaceRecursive ( const SExpression &  search, const SExpression &  replace  )

noexcept

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toByteArray()

QByteArray toByteArray

(

Mode

mode = Mode::LibrePCB

)

const

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operator==()

bool operator== ( const SExpression &  rhs ) const

noexcept

operator!=()

bool operator!= ( const SExpression &  rhs ) const

inlinenoexcept

operator<()

bool operator< ( const SExpression &  rhs ) const

noexcept

operator=()

SExpression & operator= ( const SExpression &  rhs )

noexcept

createList()

std::unique_ptr< SExpression > createList ( const QString &  name )

static

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createToken()

std::unique_ptr< SExpression > createToken ( const QString &  token )

static

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createString()

std::unique_ptr< SExpression > createString ( const QString &  string )

static

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createLineBreak()

std::unique_ptr< SExpression > createLineBreak ( )

static

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parse() [1/2]

std::unique_ptr< SExpression > parse ( const QByteArray &  content, const FilePath &  filePath, Mode  mode = Mode::LibrePCB  )

static

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isMultiLine()

bool isMultiLine ( ) const

privatenoexcept

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skipLineBreaks()

bool skipLineBreaks ( const std::vector< std::unique_ptr< SExpression > > &  children, int &  index  )

staticprivatenoexcept

parse() [2/2]

std::unique_ptr< SExpression > parse ( const QString &  content, int &  index, const FilePath &  filePath, Mode  mode  )

staticprivate

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parseList()

std::unique_ptr< SExpression > parseList ( const QString &  content, int &  index, const FilePath &  filePath, Mode  mode  )

staticprivate

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parseToken()

QString parseToken ( const QString &  content, int &  index, const FilePath &  filePath, Mode  mode  )

staticprivate

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parseString()

QString parseString ( const QString &  content, int &  index, const FilePath &  filePath  )

staticprivate

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skipWhitespaceAndComments()

void skipWhitespaceAndComments ( const QString &  content, int &  index, bool  skipNewline = false  )

staticprivate

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escapeString()

QString escapeString ( const QString &  string )

staticprivatenoexcept

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isValidToken()

bool isValidToken ( const QString &  token, Mode  mode  )

staticprivatenoexcept

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isValidTokenChar()

bool isValidTokenChar ( const QChar &  c, Mode  mode  )

staticprivatenoexcept

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toString()

QString toString ( int  indent, Mode  mode  ) const

private

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Friends And Related Symbol Documentation

qHash

uint qHash ( const SExpression &  node, uint  seed  )

friend

Member Data Documentation

mType

Type mType

private

mValue

QString mValue

private

either a list name, a token or a string

mChildren

std::vector<std::unique_ptr<SExpression> > mChildren

private

mFilePath

FilePath mFilePath

private

---

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

• /__w/1/s/libs/librepcb/core/serialization/sexpression.h
• /__w/1/s/libs/librepcb/core/serialization/sexpression.cpp