| /* String object interface */ |
| |
| /* |
| 123456789-123456789-123456789-123456789-123456789-123456789-123456789-12 |
| |
| Type stringobject represents a character string. An extra zero byte is |
| reserved at the end to ensure it is zero-terminated, but a size is |
| present so strings with null bytes in them can be represented. This |
| is an immutable object type. |
| |
| There are functions to create new string objects, to test |
| an object for string-ness, and to get the |
| string value. The latter function returns a null pointer |
| if the object is not of the proper type. |
| There is a variant that takes an explicit size as well as a |
| variant that assumes a zero-terminated string. Note that none of the |
| functions should be applied to nil objects. |
| */ |
| |
| /* NB The type is revealed here only because it is used in dictobject.c */ |
| |
| typedef struct { |
| OB_VARHEAD |
| char ob_sval[1]; |
| } stringobject; |
| |
| extern typeobject Stringtype; |
| |
| #define is_stringobject(op) ((op)->ob_type == &Stringtype) |
| |
| extern object *newsizedstringobject PROTO((char *, int)); |
| extern object *newstringobject PROTO((char *)); |
| extern unsigned int getstringsize PROTO((object *)); |
| extern char *getstringvalue PROTO((object *)); |
| extern void joinstring PROTO((object **, object *)); |
| extern int resizestring PROTO((object **, int)); |
| |
| /* Macro, trading safety for speed */ |
| #define GETSTRINGVALUE(op) ((op)->ob_sval) |