typval.h File Reference

#include <inttypes.h>
#include <stddef.h>
#include <string.h>
#include <stdbool.h>
#include <assert.h>
#include "nvim/types.h"
#include "nvim/hashtab.h"
#include "nvim/garray.h"
#include "nvim/mbyte.h"
#include "nvim/func_attr.h"
#include "nvim/lib/queue.h"
#include "nvim/profile.h"
#include "nvim/pos.h"
#include "nvim/gettext.h"
#include "nvim/message.h"
#include "nvim/macros.h"

Go to the source code of this file.

Data Structures
struct	Callback
struct	dict_watcher
	Structure holding dictionary watcher. More...
struct	typval_T
	Structure that holds an internal variable value. More...
union	typval_T::typval_vval_union
struct	listitem_S
struct	listwatch_S
struct	listvar_S
struct	staticList10_T
struct	dictvar_S
	Structure representing a Dictionary. More...
struct	sctx_T
struct	ufunc
	Structure to hold info for a user function. More...
struct	partial_S
struct	ht_stack_S
	Structure used for explicit stack while garbage collecting hash tables. More...
struct	list_stack_S
	Structure used for explicit stack while garbage collecting lists. More...
struct	ListSortItem
	Structure representing one list item, used for sort array. More...

Macros
#define	VARNUMBER_MAX   INT64_MAX
	Maximal possible value of varnumber_T variable. More...
#define	UVARNUMBER_MAX   UINT64_MAX
#define	VARNUMBER_MIN   INT64_MIN
	Mimimal possible value of varnumber_T variable. More...
#define	PRIdVARNUMBER   PRId64
	d printf format specifier for varnumber_T More...
#define	CALLBACK_NONE   ((Callback){ .type = kCallbackNone })
#define	TV_LIST_STATIC10_INIT
#define	TV_DICTITEM_STRUCT(...)
#define	PRIdSCID   "d"
	Format argument for scid_T. More...
#define	MAX_FUNC_ARGS   20
	Maximum number of function arguments. More...
#define	list_log(...)
#define	list_write_log(...)
#define	list_free_log()
#define	TV_DICT_HI2DI(hi)   ((dictitem_T *)((hi)->hi_key - offsetof(dictitem_T, di_key)))
	Convert a hashitem pointer to a dictitem pointer. More...
#define	TV_INITIAL_VALUE
#define	_TV_LIST_ITER_MOD(modifier, l, li, code)
#define	TV_LIST_ITER(l, li, code)   _TV_LIST_ITER_MOD(, l, li, code)
#define	TV_LIST_ITER_CONST(l, li, code)   _TV_LIST_ITER_MOD(const, l, li, code)
#define	TV_LIST_ITEM_TV(li)   (&(li)->li_tv)
#define	TV_LIST_ITEM_NEXT(l, li)   ((li)->li_next)
#define	TV_LIST_ITEM_PREV(l, li)   ((li)->li_prev)
#define	TV_DICT_ITER(d, di, code)
#define	TV_TRANSLATE   (SIZE_MAX)
#define	TV_CSTRING   (SIZE_MAX - 1)

Typedefs
typedef int64_t	varnumber_T
	Type used for VimL VAR_NUMBER values. More...
typedef uint64_t	uvarnumber_T
typedef double	float_T
	Type used for VimL VAR_FLOAT values. More...
typedef struct listvar_S	list_T
typedef struct dictvar_S	dict_T
typedef struct partial_S	partial_T
typedef struct ufunc	ufunc_T
typedef struct dict_watcher	DictWatcher
	Structure holding dictionary watcher. More...
typedef struct listitem_S	listitem_T
	Structure to hold an item of a list. More...
typedef struct listwatch_S	listwatch_T
	Structure used by those that are using an item in a list. More...
typedef int	scid_T
	Type used for script ID. More...
typedef struct funccall_S	funccall_T
typedef struct ht_stack_S	ht_stack_T
	Structure used for explicit stack while garbage collecting hash tables. More...
typedef struct list_stack_S	list_stack_T
	Structure used for explicit stack while garbage collecting lists. More...
typedef int(*	ListSorter) (const void *, const void *)

Enumerations
enum	{ DO_NOT_FREE_CNT = (INT_MAX / 2) }
	Refcount for dict or list that should not be freed. More...
enum	ListLenSpecials { kListLenUnknown = -1, kListLenShouldKnow = -2, kListLenMayKnow = -3 }
	Additional values for tv_list_alloc() len argument. More...
enum	CallbackType { kCallbackNone = 0, kCallbackFuncref, kCallbackPartial }
enum	SpecialVarValue { kSpecialVarFalse, kSpecialVarTrue, kSpecialVarNull }
	Special variable values. More...
enum	VarLockStatus { VAR_UNLOCKED = 0, VAR_LOCKED = 1, VAR_FIXED = 2 }
	Variable lock status for typval_T.v_lock. More...
enum	VarType {   VAR_UNKNOWN = 0, VAR_NUMBER, VAR_STRING, VAR_FUNC,   VAR_LIST, VAR_DICT, VAR_FLOAT, VAR_SPECIAL,   VAR_PARTIAL }
	VimL variable types, for use in typval_T.v_type. More...
enum	ScopeType { VAR_NO_SCOPE = 0, VAR_SCOPE = 1, VAR_DEF_SCOPE = 2 }
	Values for (struct dictvar_S).dv_scope. More...
enum	DictItemFlags {   DI_FLAGS_RO = 1, DI_FLAGS_RO_SBX = 2, DI_FLAGS_FIX = 4, DI_FLAGS_LOCK = 8,   DI_FLAGS_ALLOC = 16 }
	Flags for dictitem_T.di_flags. More...

Functions
typedef	TV_DICTITEM_STRUCT (1) ScopeDictDictItem
typedef	TV_DICTITEM_STRUCT () dictitem_T
bool	emsgf (const char *const fmt,...)
	Print an error message with unknown number of arguments. More...

Variables
const char *const	tv_empty_string
bool	tv_in_free_unref_items
	Specifies that free_unref_items() function has (not) been entered. More...

Macro Definition Documentation

#define _TV_LIST_ITER_MOD	(		modifier,
			l,
			li,
			code
	)

Value:

do { \
      modifier list_T *const l_ = (l); \
      list_log(l_, NULL, NULL, "iter" #modifier); \
      if (l_ != NULL) { \
        for (modifier listitem_T *li = l_->lv_first; \
             li != NULL; li = li->li_next) { \
          code \
        } \
      } \
    } while (0)

Iterate over a list

Parameters

	modifier	Modifier: expected to be const or nothing, volatile should also work if you have any uses for the volatile list.
[in]	l	List to iterate over.
	li	Name of the variable with current listitem_T entry.
	code	Cycle body.

#define CALLBACK_NONE   ((Callback){ .type = kCallbackNone })

#define list_free_log

(

)

#define list_log

(

...

)

#define list_write_log

(

...

)

#define MAX_FUNC_ARGS   20

Maximum number of function arguments.

#define PRIdSCID   "d"

Format argument for scid_T.

#define PRIdVARNUMBER   PRId64

d printf format specifier for varnumber_T

#define TV_CSTRING   (SIZE_MAX - 1)

Specify that argument is a NUL-terminated C string

Used for size_t length arguments to avoid calling strlen() unless needed.

#define TV_DICT_HI2DI

(

hi

)

((dictitem_T *)((hi)->hi_key - offsetof(dictitem_T, di_key)))

Convert a hashitem pointer to a dictitem pointer.

#define TV_DICT_ITER	(		d,
			di,
			code
	)

Value:

HASHTAB_ITER(&(d)->dv_hashtab, di##hi_, { \
      { \
        dictitem_T *const di = TV_DICT_HI2DI(di##hi_); \
        { \
          code \
        } \
      } \
    })

Iterate over a dictionary

Parameters

[in]	d	Dictionary to iterate over.
	di	Name of the variable with current dictitem_T entry.
	code	Cycle body.

#define TV_DICTITEM_STRUCT

(

...

)

Value:

struct { \
      typval_T di_tv;  /* Structure that holds scope dictionary itself. */ \
      uint8_t di_flags;  /* Flags. */ \
      char_u di_key[__VA_ARGS__];  /* Key value. */ \
    }

#define TV_INITIAL_VALUE

Value:

((typval_T) { \
      .v_type = VAR_UNKNOWN, \
      .v_lock = VAR_UNLOCKED, \
    })

#define TV_LIST_ITEM_NEXT	(		l,
			li
	)		((li)->li_next)

Get next list item given the current one

Parameters

[in]	l	List to get item from.
[in]	li	List item to get typval_T from.

Returns

Pointer to the next item or NULL.

#define TV_LIST_ITEM_PREV	(		l,
			li
	)		((li)->li_prev)

Get previous list item given the current one

Parameters

[in]	l	List to get item from.
[in]	li	List item to get typval_T from.

Returns

Pointer to the previous item or NULL.

#define TV_LIST_ITEM_TV

(

li

)

(&(li)->li_tv)

Get typval_T out of list item

Parameters

[in]

li

List item to get typval_T from, must not be NULL.

Returns

Pointer to typval_T.

#define TV_LIST_ITER	(		l,
			li,
			code
	)		_TV_LIST_ITER_MOD(, l, li, code)

Iterate over a list

To be used when you need to modify list or values you iterate over, use TV_LIST_ITER_CONST if you don’t.

Parameters

[in]	l	List to iterate over.
	li	Name of the variable with current listitem_T entry.
	code	Cycle body.

#define TV_LIST_ITER_CONST	(		l,
			li,
			code
	)		_TV_LIST_ITER_MOD(const, l, li, code)

Iterate over a list

To be used when you don’t need to modify list or values you iterate over, use TV_LIST_ITER if you do.

Parameters

[in]	l	List to iterate over.
	li	Name of the variable with current listitem_T entry.
	code	Cycle body.

#define TV_LIST_STATIC10_INIT

Value:

{ \
    .sl_list = { \
      .lv_first = NULL, \
      .lv_last = NULL, \
      .lv_refcount = 0, \
      .lv_len = 0, \
      .lv_watch = NULL, \
      .lv_idx_item = NULL, \
      .lv_lock = VAR_FIXED, \
      .lv_used_next = NULL, \
      .lv_used_prev = NULL, \
    }, \
  }

#define TV_TRANSLATE   (SIZE_MAX)

Specify that argument needs to be translated

Used for size_t length arguments to avoid calling gettext() and strlen() unless needed.

#define UVARNUMBER_MAX   UINT64_MAX

#define VARNUMBER_MAX   INT64_MAX

Maximal possible value of varnumber_T variable.

#define VARNUMBER_MIN   INT64_MIN

Mimimal possible value of varnumber_T variable.

Typedef Documentation

typedef struct dictvar_S dict_T

typedef struct dict_watcher DictWatcher

Structure holding dictionary watcher.

typedef double float_T

Type used for VimL VAR_FLOAT values.

typedef struct funccall_S funccall_T

typedef struct ht_stack_S ht_stack_T

Structure used for explicit stack while garbage collecting hash tables.

typedef struct list_stack_S list_stack_T

Structure used for explicit stack while garbage collecting lists.

typedef struct listvar_S list_T

typedef struct listitem_S listitem_T

Structure to hold an item of a list.

typedef int(* ListSorter) (const void *, const void *)

typedef struct listwatch_S listwatch_T

Structure used by those that are using an item in a list.

typedef struct partial_S partial_T

typedef int scid_T

Type used for script ID.

typedef struct ufunc ufunc_T

typedef uint64_t uvarnumber_T

typedef int64_t varnumber_T

Type used for VimL VAR_NUMBER values.

Enumeration Type Documentation

anonymous enum

Refcount for dict or list that should not be freed.

Enumerator
DO_NOT_FREE_CNT

enum CallbackType

Enumerator
kCallbackNone
kCallbackFuncref
kCallbackPartial

enum DictItemFlags

Flags for dictitem_T.di_flags.

Enumerator
DI_FLAGS_RO	Read-only value.
DI_FLAGS_RO_SBX	Value, read-only in the sandbox.
DI_FLAGS_FIX	Fixed value: cannot be :unlet or remove()d.
DI_FLAGS_LOCK	Locked value.
DI_FLAGS_ALLOC	Separately allocated.

enum ListLenSpecials

Additional values for tv_list_alloc() len argument.

Enumerator
kListLenUnknown	List length is not known in advance To be used when there is neither a way to know how many elements will be needed nor are any educated guesses.
kListLenShouldKnow	List length should be known, but is actually not All occurrences of this value should be eventually removed. This is for the case when the only reason why list length is not known is that it would be hard to code without refactoring, but refactoring is needed.
kListLenMayKnow	List length may be known in advance, but it requires too much effort To be used when it looks impractical to determine list length.

enum ScopeType

Values for (struct dictvar_S).dv_scope.

Enumerator
VAR_NO_SCOPE	Not a scope dictionary.
VAR_SCOPE	Scope dictionary which requires prefix (a:, v:, …).
VAR_DEF_SCOPE	Scope dictionary which may be accessed without prefix (l:, g:).

enum SpecialVarValue

Special variable values.

Enumerator
kSpecialVarFalse	v:false
kSpecialVarTrue	v:true
kSpecialVarNull	v:null

enum VarLockStatus

Variable lock status for typval_T.v_lock.

Enumerator
VAR_UNLOCKED	Not locked.
VAR_LOCKED	User lock, can be unlocked.
VAR_FIXED	Locked forever.

enum VarType

VimL variable types, for use in typval_T.v_type.

Enumerator
VAR_UNKNOWN	Unknown (unspecified) value.
VAR_NUMBER	Number, .v_number is used.
VAR_STRING	String, .v_string is used.
VAR_FUNC	Function reference, .v_string is used as function name.
VAR_LIST	List, .v_list is used.
VAR_DICT	Dictionary, .v_dict is used.
VAR_FLOAT	Floating-point value, .v_float is used.
VAR_SPECIAL	Special value (true, false, null), .v_special is used.
VAR_PARTIAL	Partial, .v_partial is used.

Function Documentation

bool emsgf	(	const char *const	fmt,
			...
	)

Print an error message with unknown number of arguments.

typedef TV_DICTITEM_STRUCT

(

1

)

Structure to hold a scope dictionary

Warning

Must be compatible with dictitem_T.

For use in find_var_in_ht to pretend that it found dictionary item when it finds scope dictionary.

typedef TV_DICTITEM_STRUCT

(

)

Structure to hold an item of a Dictionary

Warning

Must be compatible with ScopeDictDictItem.

Also used for a variable.

Variable Documentation

const char* const tv_empty_string

Empty string

Needed for hack which allows not allocating empty string and still not crashing when freeing it.

bool tv_in_free_unref_items

Specifies that free_unref_items() function has (not) been entered.