cons.hpp File Reference

#include <iostream>
#include "Cell.hpp"

Go to the source code of this file.

Functions
Cell *	make_int (const int i)
	Make an int cell.
Cell *	make_double (const double d)
	Make a double cell.
Cell *	make_symbol (const char *const s)
	Make a symbol cell.
Cell *	cons (Cell *const my_car, Cell *const my_cdr)
	Make a conspair cell.
bool	nullp (Cell *const c)
	Check if c points to an empty list, i.e., is a null pointer.
bool	listp (Cell *const c)
	Check if c points to a list (i.e., nil or a cons cell).
bool	intp (Cell *const c)
	Check if c points to an int cell.
bool	doublep (Cell *const c)
	Check if c points to a double cell.
bool	symbolp (Cell *const c)
	Check if c points to a symbol cell.
int	get_int (Cell *const c)
	Accessor (error if c is not an int cell).
double	get_double (Cell *const c)
	Accessor (error if c is not a double cell).
string	get_symbol (Cell *const c)
	Retrieve the symbol name as a string (error if c is not a symbol cell).
Cell *	car (Cell *const c)
	Accessor (error if c is not a cons cell).
Cell *	cdr (Cell *const c)
	Accessor (error if c is not a string cell).
ostream &	operator<< (ostream &os, const Cell &c)
	Print the subtree rooted at c, in s-expression notation.
Variables
Cell *const	nil
	The null pointer value.

---

Detailed Description

Encapsulates an abstract interface layer for a cons list ADT, without using member functions. Makes no assumptions about what kind of concrete type Cell will be defined to be.

---

Function Documentation

Cell* car (  Cell *const   c  )  [inline]

Accessor (error if c is not a cons cell). Returns: The car pointer in the cons cell pointed to by c.

Cell* cdr (  Cell *const   c  )  [inline]

Accessor (error if c is not a string cell). Returns: The cdr pointer in the cons cell pointed to by c.

Cell* cons (  Cell *const   my_car, Cell *const   my_cdr )  [inline]

Make a conspair cell. Parameters: my_car  The initial car pointer to be stored in the new cell. my_cdr  The initial cdr pointer to be stored in the new cell.

bool doublep (  Cell *const   c  )  [inline]

Check if c points to a double cell. Returns: True iff c points to a double cell.

double get_double (  Cell *const   c  )  [inline]

Accessor (error if c is not a double cell). Returns: The value in the double cell pointed to by c.

int get_int (  Cell *const   c  )  [inline]

Accessor (error if c is not an int cell). Returns: The value in the int cell pointed to by c.

string get_symbol (  Cell *const   c  )  [inline]

Retrieve the symbol name as a string (error if c is not a symbol cell). Returns: The symbol name in the symbol cell pointed to by c.

bool intp (  Cell *const   c  )  [inline]

Check if c points to an int cell. Returns: True iff c points to an int cell.

bool listp (  Cell *const   c  )  [inline]

Check if c points to a list (i.e., nil or a cons cell). Returns: True iff c points to a list (i.e., nil or a cons cell).

Cell* make_double (  const double  d  )  [inline]

Make a double cell. Parameters: d  The initial double value to be stored in the new cell.

Cell* make_int (  const int  i  )  [inline]

Make an int cell. Parameters: i  The initial int value to be stored in the new cell.

Cell* make_symbol (  const char *const   s  )  [inline]

Make a symbol cell. Parameters: s  The initial symbol name to be stored in the new cell.

bool nullp (  Cell *const   c  )  [inline]

Check if c points to an empty list, i.e., is a null pointer. Returns: True iff c points to an empty list, i.e., is a null pointer.

ostream& operator<< (  ostream &  os, const Cell &  c )  [inline]

Print the subtree rooted at c, in s-expression notation. Parameters: os  The output stream to print to. c  The root cell of the subtree to be printed.

bool symbolp (  Cell *const   c  )  [inline]

Check if c points to a symbol cell. Returns: True iff c points to a symbol cell.

---

Variable Documentation

Cell* const nil

The null pointer value.

---