Represents a named function. More...

#include <syntax.hpp>

Inheritance diagram for FunctionExpr:

Public Member Functions
	FunctionExpr (GCMain &gc, const TokenPos &pos, const std::string &name, std::pair< std::vector< Expr * >, Expr * > fncase) noexcept

void	calcDepth () noexcept

bool	addCase (std::pair< std::vector< Expr * >, Expr * > fncase) noexcept
	Adds function evaluation case to function. More...

const std::string &	getName () const noexcept

std::vector< std::pair< std::vector< Expr * >, Expr * > > &	getFunctionCases () noexcept

const std::vector< std::pair< std::vector< Expr * >, Expr * > > &	getFunctionCases () const noexcept

virtual void	mark (GCMain &gc) noexcept override
	If not marked mark itself and children.

virtual Expr *	eval (GCMain &gc, Environment &env) noexcept
	Evaluates expression one time. More...

virtual std::string	toString () const noexcept override

Public Member Functions inherited from Expr
	Expr (GCMain &gc, ExprType type, const TokenPos &pos)

std::size_t	getDepth () const noexcept

bool	hasLastEval () const noexcept

const TokenPos &	getTokenPos () const noexcept

ExprType	getExpressionType () const noexcept

Expr *	evalWithLookup (GCMain &gc, Environment &env) noexcept

virtual Expr *	replace (GCMain &gc, const std::string &name, Expr *expr) const noexcept
	Replace all identifiers equal to name with expr. More...

virtual bool	equals (const Expr *expr, bool exact=false) const noexcept
	Checks if this expression and expr have the same structure, Every expression has the same structure as '_' (it's called ANY after all). More...

virtual std::vector< std::string >	getIdentifiers () const noexcept

virtual Expr *	optimize (GCMain &gc) noexcept

Public Member Functions inherited from GCObj
	GCObj (GCMain &main) noexcept
	Initialize as not marked.

virtual bool	isMarked (GCMain &main) const noexcept

Additional Inherited Members
Protected Member Functions inherited from GCObj
virtual void	markSelf (GCMain &main)
	Marks itself.

Protected Attributes inherited from Expr
std::size_t	depth

Expr *	lastEval = nullptr

Detailed Description

Represents a named function.

Member Function Documentation

◆ addCase()

bool FunctionExpr::addCase ( std::pair< std::vector< Expr * >, Expr * > fncase )

noexcept

Adds function evaluation case to function.

Parameters

fncase

Returns

Returns

fncase.first.size() == getFunctionCases().front().first.size()

◆ eval()

virtual Expr* FunctionExpr::eval	(	GCMain &	gc,
		Environment &	env
	)

virtualnoexcept

Evaluates expression one time.

Parameters

gc
env	Environment for accessing variables.

Returns: Returns itself if nothing evaluated, otherwise a new expression.

Reimplemented from Expr.

◆ getName()

const std::string& FunctionExpr::getName ( ) const

inlinenoexcept

Returns: Returns name of function.

◆ toString()

virtual std::string FunctionExpr::toString ( ) const

inlineoverridevirtualnoexcept

Returns: Returns expression in functional-lang (the programming language to parse).