diff options
author | Eliseo Martínez <eliseomarmol@gmail.com> | 2014-05-12 02:25:17 +0200 |
---|---|---|
committer | Eliseo Martínez <eliseomarmol@gmail.com> | 2014-05-15 20:46:01 +0200 |
commit | da51dc9cf202772f60bd2da975dbef257bd9237c (patch) | |
tree | 5c16b93238a153f55634e9323077f30c8133970c /src/nvim/ex_eval.h | |
parent | ffe61e5ba1721340ca51d56bae3ddaca415fb5bc (diff) | |
download | rneovim-da51dc9cf202772f60bd2da975dbef257bd9237c.tar.gz rneovim-da51dc9cf202772f60bd2da975dbef257bd9237c.tar.bz2 rneovim-da51dc9cf202772f60bd2da975dbef257bd9237c.zip |
Introduce nvim namespace: Move files.
Move files from src/ to src/nvim/.
- src/nvim/ becomes the new root dir for nvim executable sources.
- src/libnvim/ is planned to become root dir of the neovim library.
Diffstat (limited to 'src/nvim/ex_eval.h')
-rw-r--r-- | src/nvim/ex_eval.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/nvim/ex_eval.h b/src/nvim/ex_eval.h new file mode 100644 index 0000000000..4fcf4760ff --- /dev/null +++ b/src/nvim/ex_eval.h @@ -0,0 +1,159 @@ +#ifndef NEOVIM_EX_EVAL_H +#define NEOVIM_EX_EVAL_H + +/* + * 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. + */ +#define CSTACK_LEN 50 + +struct condstack { + short 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" */ + char cs_lflags; /* loop flags: CSL_ flags */ +}; +# define cs_rettv cs_pend.csp_rv +# define cs_exception cs_pend.csp_ex + +/* There is no CSF_IF, the lack of CSF_WHILE, CSF_FOR and CSF_TRY means ":if" + * was used. */ +# define CSF_TRUE 0x0001 /* condition was TRUE */ +# define CSF_ACTIVE 0x0002 /* current state is active */ +# define CSF_ELSE 0x0004 /* ":else" has been passed */ +# define CSF_WHILE 0x0008 /* is a ":while" */ +# define CSF_FOR 0x0010 /* is a ":for" */ + +# define CSF_TRY 0x0100 /* is a ":try" */ +# define CSF_FINALLY 0x0200 /* ":finally" has been passed */ +# define CSF_THROWN 0x0400 /* exception thrown to this try conditional */ +# define CSF_CAUGHT 0x0800 /* exception caught by this try conditional */ +# define CSF_SILENT 0x1000 /* "emsg_silent" reset by ":try" */ +/* Note that CSF_ELSE is only used when CSF_TRY and CSF_WHILE are unset + * (an ":if"), and CSF_SILENT is only used when CSF_TRY is set. */ + +/* + * What's pending for being reactivated at the ":endtry" of this try + * conditional: + */ +# define CSTP_NONE 0 /* nothing pending in ":finally" clause */ +# define CSTP_ERROR 1 /* an error is pending */ +# define CSTP_INTERRUPT 2 /* an interrupt is pending */ +# define CSTP_THROW 4 /* a throw is pending */ +# define CSTP_BREAK 8 /* ":break" is pending */ +# define CSTP_CONTINUE 16 /* ":continue" is pending */ +# define CSTP_RETURN 24 /* ":return" is pending */ +# define CSTP_FINISH 32 /* ":finish" is pending */ + +/* + * Flags for the cs_lflags item in struct condstack. + */ +# define CSL_HAD_LOOP 1 /* just found ":while" or ":for" */ +# define CSL_HAD_ENDLOOP 2 /* just found ":endwhile" or ":endfor" */ +# define CSL_HAD_CONT 4 /* just found ":continue" */ +# define CSL_HAD_FINA 8 /* just found ":finally" */ + +/* + * A list of error messages that can be converted to an exception. "throw_msg" + * is only set in the first element of the list. Usually, it points to the + * original message stored in that element, but sometimes it points to a later + * message in the list. See cause_errthrow() below. + */ +struct msglist { + char_u *msg; /* original message */ + char_u *throw_msg; /* msg to throw: usually original one */ + struct msglist *next; /* next of several messages in a row */ +}; + +/* + * Structure describing an exception. + * (don't use "struct exception", it's used by the math library). + */ +typedef struct vim_exception except_T; +struct vim_exception { + int type; /* exception type */ + char_u *value; /* exception value */ + struct msglist *messages; /* message(s) causing error exception */ + char_u *throw_name; /* name of the throw point */ + linenr_T throw_lnum; /* line number of the throw point */ + except_T *caught; /* next exception on the caught stack */ +}; + +/* + * The exception types. + */ +#define ET_USER 0 /* exception caused by ":throw" command */ +#define ET_ERROR 1 /* error exception */ +#define ET_INTERRUPT 2 /* interrupt exception triggered by Ctrl-C */ + +/* + * Structure to save the error/interrupt/exception state between calls to + * enter_cleanup() and leave_cleanup(). Must be allocated as an automatic + * variable by the (common) caller of these functions. + */ +typedef struct cleanup_stuff cleanup_T; +struct cleanup_stuff { + int pending; /* error/interrupt/exception state */ + except_T *exception; /* exception value */ +}; + +/* ex_eval.c */ +int aborting(void); +void update_force_abort(void); +int should_abort(int retcode); +int aborted_in_try(void); +int cause_errthrow(char_u *mesg, int severe, int *ignore); +void free_global_msglist(void); +void do_errthrow(struct condstack *cstack, char_u *cmdname); +int do_intthrow(struct condstack *cstack); +char_u *get_exception_string(void *value, int type, char_u *cmdname, + int *should_free); +void discard_current_exception(void); +void report_make_pending(int pending, void *value); +void report_resume_pending(int pending, void *value); +void report_discard_pending(int pending, void *value); +void ex_if(exarg_T *eap); +void ex_endif(exarg_T *eap); +void ex_else(exarg_T *eap); +void ex_while(exarg_T *eap); +void ex_continue(exarg_T *eap); +void ex_break(exarg_T *eap); +void ex_endwhile(exarg_T *eap); +void ex_throw(exarg_T *eap); +void do_throw(struct condstack *cstack); +void ex_try(exarg_T *eap); +void ex_catch(exarg_T *eap); +void ex_finally(exarg_T *eap); +void ex_endtry(exarg_T *eap); +void enter_cleanup(cleanup_T *csp); +void leave_cleanup(cleanup_T *csp); +int cleanup_conditionals(struct condstack *cstack, int searched_cond, + int inclusive); +void rewind_conditionals(struct condstack *cstack, int idx, + int cond_type, + int *cond_level); +void ex_endfunction(exarg_T *eap); +int has_loop_cmd(char_u *p); + +#endif /* NEOVIM_EX_EVAL_H */ |