ex_cmds_defs.h

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#ifndef NVIM_EX_CMDS_DEFS_H
#define NVIM_EX_CMDS_DEFS_H

#include <stdbool.h>
#include <stdint.h>

#include "nvim/pos.h"      // for linenr_T
#include "nvim/normal.h"
#include "nvim/regexp_defs.h"

#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "ex_cmds_enum.generated.h"
#endif

// When adding an Ex command:
// 1. Add an entry to the table in src/nvim/ex_cmds.lua.  Keep it sorted on the
//    shortest version of the command name that works.  If it doesn't start with
//    a lower case letter, add it at the end.
//
//    Each table entry is a table with the following keys:
//
//      Key     | Description
//      ------- | -------------------------------------------------------------
//      command | Name of the command. Required.
//      enum    | Name of the enum entry. If not set defaults to CMD_{command}.
//      flags   | A set of the flags from below list joined by bitwise or.
//      func    | Name of the function containing the implementation.
//
//    Referenced function should be either non-static one or defined in
//    ex_docmd.c and be coercible to ex_func_T type from below.
//
//    All keys not described in the above table are reserved for future use.
//
// 2. Add a "case: CMD_xxx" in the big switch in ex_docmd.c.
// 3. Add an entry in the index for Ex commands at ":help ex-cmd-index".
// 4. Add documentation in ../doc/xxx.txt.  Add a tag for both the short and
//    long name of the command.

#define RANGE           0x001   // allow a linespecs
#define BANG            0x002   // allow a ! after the command name
#define EXTRA           0x004   // allow extra args after command name
#define XFILE           0x008   // expand wildcards in extra part
#define NOSPC           0x010   // no spaces allowed in the extra part
#define DFLALL          0x020   // default file range is 1,$
#define WHOLEFOLD       0x040   // extend range to include whole fold also
                                // when less than two numbers given
#define NEEDARG         0x080   // argument required
#define TRLBAR          0x100   // check for trailing vertical bar
#define REGSTR          0x200   // allow "x for register designation
#define COUNT           0x400   // allow count in argument, after command
#define NOTRLCOM        0x800   // no trailing comment allowed
#define ZEROR          0x1000   // zero line number allowed
#define USECTRLV       0x2000   // do not remove CTRL-V from argument
#define NOTADR         0x4000   // number before command is not an address
#define EDITCMD        0x8000   // allow "+command" argument
#define BUFNAME       0x10000   // accepts buffer name
#define BUFUNL        0x20000   // accepts unlisted buffer too
#define ARGOPT        0x40000   // allow "++opt=val" argument
#define SBOXOK        0x80000   // allowed in the sandbox
#define CMDWIN       0x100000   // allowed in cmdline window; when missing
                                // disallows editing another buffer when
                                // curbuf_lock is set
#define MODIFY       0x200000   // forbidden in non-'modifiable' buffer
#define EXFLAGS      0x400000   // allow flags after count in argument
#define RESTRICT     0x800000L  // forbidden in restricted mode
#define FILES (XFILE | EXTRA)   // multiple extra files allowed
#define WORD1 (EXTRA | NOSPC)   // one extra word allowed
#define FILE1 (FILES | NOSPC)   // 1 file allowed, defaults to current file

// values for cmd_addr_type
#define ADDR_LINES              0
#define ADDR_WINDOWS            1
#define ADDR_ARGUMENTS          2
#define ADDR_LOADED_BUFFERS     3
#define ADDR_BUFFERS            4
#define ADDR_TABS               5
#define ADDR_TABS_RELATIVE      6   // Tab page that only relative
#define ADDR_QUICKFIX           7
#define ADDR_OTHER              99

typedef struct exarg exarg_T;

/* behavior for bad character, "++bad=" argument */
#define BAD_REPLACE     '?'     /* replace it with '?' (default) */
#define BAD_KEEP        -1      /* leave it */
#define BAD_DROP        -2      /* erase it */

typedef void (*ex_func_T)(exarg_T *eap);

typedef char_u *(*LineGetter)(int, void *, int, bool);

typedef struct cmdname {
  char_u *cmd_name;    
  ex_func_T cmd_func;  
  uint32_t cmd_argt;     
  int cmd_addr_type;     
} CommandDefinition;

// A list used for saving values of "emsg_silent".  Used by ex_try() to save the
// value of "emsg_silent" if it was non-zero.  When this is done, the CSF_SILENT
// flag below is set.
typedef struct eslist_elem eslist_T;
struct eslist_elem {
  int saved_emsg_silent;  // saved value of "emsg_silent"
  eslist_T *next;         // next element on the list
};

// For conditional commands a stack is kept of nested conditionals.
// When cs_idx < 0, there is no conditional command.
enum {
  CSTACK_LEN = 50,
};

typedef struct {
  int cs_flags[CSTACK_LEN];         // CSF_ flags
  char cs_pending[CSTACK_LEN];      // CSTP_: what's pending in ":finally"
  union {
    void *csp_rv[CSTACK_LEN];       // return typeval for pending return
    void *csp_ex[CSTACK_LEN];       // exception for pending throw
  } cs_pend;
  void *cs_forinfo[CSTACK_LEN];     // info used by ":for"
  int cs_line[CSTACK_LEN];          // line nr of ":while"/":for" line
  int cs_idx;                       // current entry, or -1 if none
  int cs_looplevel;                 // nr of nested ":while"s and ":for"s
  int cs_trylevel;                  // nr of nested ":try"s
  eslist_T *cs_emsg_silent_list;    // saved values of "emsg_silent"
  int cs_lflags;                    // loop flags: CSL_ flags
} cstack_T;
# define cs_rettv       cs_pend.csp_rv
# define cs_exception   cs_pend.csp_ex

// Flags for the cs_lflags item in cstack_T.
enum {
  CSL_HAD_LOOP =    1,  // just found ":while" or ":for"
  CSL_HAD_ENDLOOP = 2,  // just found ":endwhile" or ":endfor"
  CSL_HAD_CONT =    4,  // just found ":continue"
  CSL_HAD_FINA =    8,  // just found ":finally"
};

struct exarg {
  char_u      *arg;             
  char_u      *nextcmd;         
  char_u      *cmd;             
  char_u      **cmdlinep;       
  cmdidx_T cmdidx;              
  uint32_t argt;                
  int skip;                     
  int forceit;                  
  int addr_count;               
  linenr_T line1;               
  linenr_T line2;               
  int addr_type;                
  int flags;                    
  char_u      *do_ecmd_cmd;     
  linenr_T do_ecmd_lnum;        
  int append;                   
  int usefilter;                
  int amount;                   
  int regname;                  
  int force_bin;                
  int read_edit;                
  int force_ff;                 
  int force_enc;                
  int bad_char;                 
  int useridx;                  
  char_u *errmsg;               
  LineGetter getline;           
  void   *cookie;               
  cstack_T *cstack;             
};

#define FORCE_BIN 1             // ":edit ++bin file"
#define FORCE_NOBIN 2           // ":edit ++nobin file"

// Values for "flags"
#define EXFLAG_LIST     0x01    // 'l': list
#define EXFLAG_NR       0x02    // '#': number
#define EXFLAG_PRINT    0x04    // 'p': print

// used for completion on the command line
struct expand {
  int xp_context;               // type of expansion
  char_u *xp_pattern;           // start of item to expand
  size_t xp_pattern_len;        // bytes in xp_pattern before cursor
  char_u *xp_arg;               // completion function
  sctx_T xp_script_ctx;         // SCTX for completion function
  int xp_backslash;             // one of the XP_BS_ values
#ifndef BACKSLASH_IN_FILENAME
  int xp_shell;                 // TRUE for a shell command, more
                                // characters need to be escaped
#endif
  int xp_numfiles;              // number of files found by file name completion
  char_u **xp_files;            // list of files
  char_u *xp_line;              // text being completed
  int xp_col;                   // cursor position in line
};

// values for xp_backslash
#define XP_BS_NONE      0       // nothing special for backslashes
#define XP_BS_ONE       1       // uses one backslash before a space
#define XP_BS_THREE     2       // uses three backslashes before a space

typedef struct {
  int split;                   
  int tab;                     
  bool browse;                 
  bool confirm;                
  bool hide;                   
  bool keepalt;                
  bool keepjumps;              
  bool keepmarks;              
  bool keeppatterns;           
  bool lockmarks;              
  bool noswapfile;             
  char_u *save_ei;             
  regmatch_T filter_regmatch;  
  bool filter_force;           
} cmdmod_T;

#endif  // NVIM_EX_CMDS_DEFS_H