diff options
Diffstat (limited to 'src/debugger.c')
| -rw-r--r-- | src/debugger.c | 1057 |
1 files changed, 1057 insertions, 0 deletions
diff --git a/src/debugger.c b/src/debugger.c new file mode 100644 index 0000000..b158ecd --- /dev/null +++ b/src/debugger.c @@ -0,0 +1,1057 @@ +/* vi:set ts=8 sts=4 sw=4 noet: + * + * VIM - Vi IMproved by Bram Moolenaar + * + * Do ":help uganda" in Vim to read copying and usage conditions. + * Do ":help credits" in Vim to see a list of people who contributed. + * See README.txt for an overview of the Vim source code. + */ + +/* + * debugger.c: Vim script debugger functions + */ + +#include "vim.h" + +#if defined(FEAT_EVAL) || defined(PROTO) +static int debug_greedy = FALSE; // batch mode debugging: don't save + // and restore typeahead. +static void do_setdebugtracelevel(char_u *arg); +static void do_checkbacktracelevel(void); +static void do_showbacktrace(char_u *cmd); + +static char_u *debug_oldval = NULL; // old and newval for debug expressions +static char_u *debug_newval = NULL; +static int debug_expr = 0; // use debug_expr + + int +has_watchexpr(void) +{ + return debug_expr; +} + +/* + * do_debug(): Debug mode. + * Repeatedly get Ex commands, until told to continue normal execution. + */ + void +do_debug(char_u *cmd) +{ + int save_msg_scroll = msg_scroll; + int save_State = State; + int save_did_emsg = did_emsg; + int save_cmd_silent = cmd_silent; + int save_msg_silent = msg_silent; + int save_emsg_silent = emsg_silent; + int save_redir_off = redir_off; + tasave_T typeaheadbuf; + int typeahead_saved = FALSE; + int save_ignore_script = 0; + int save_ex_normal_busy; + int n; + char_u *cmdline = NULL; + char_u *p; + char_u *sname; + char *tail = NULL; + static int last_cmd = 0; +#define CMD_CONT 1 +#define CMD_NEXT 2 +#define CMD_STEP 3 +#define CMD_FINISH 4 +#define CMD_QUIT 5 +#define CMD_INTERRUPT 6 +#define CMD_BACKTRACE 7 +#define CMD_FRAME 8 +#define CMD_UP 9 +#define CMD_DOWN 10 + +#ifdef ALWAYS_USE_GUI + // Can't do this when there is no terminal for input/output. + if (!gui.in_use) + { + // Break as soon as possible. + debug_break_level = 9999; + return; + } +#endif + + // Make sure we are in raw mode and start termcap mode. Might have side + // effects... + settmode(TMODE_RAW); + starttermcap(); + + ++RedrawingDisabled; // don't redisplay the window + ++no_wait_return; // don't wait for return + did_emsg = FALSE; // don't use error from debugged stuff + cmd_silent = FALSE; // display commands + msg_silent = FALSE; // display messages + emsg_silent = FALSE; // display error messages + redir_off = TRUE; // don't redirect debug commands + save_timeout_for_debugging(); // disable regexp timeout flag + + State = MODE_NORMAL; + debug_mode = TRUE; + + if (!debug_did_msg) + msg(_("Entering Debug mode. Type \"cont\" to continue.")); + if (debug_oldval != NULL) + { + smsg(_("Oldval = \"%s\""), debug_oldval); + vim_free(debug_oldval); + debug_oldval = NULL; + } + if (debug_newval != NULL) + { + smsg(_("Newval = \"%s\""), debug_newval); + vim_free(debug_newval); + debug_newval = NULL; + } + sname = estack_sfile(ESTACK_NONE); + if (sname != NULL) + msg((char *)sname); + vim_free(sname); + if (SOURCING_LNUM != 0) + smsg(_("line %ld: %s"), SOURCING_LNUM, cmd); + else + smsg(_("cmd: %s"), cmd); + + // Repeat getting a command and executing it. + for (;;) + { + msg_scroll = TRUE; + need_wait_return = FALSE; + + // Save the current typeahead buffer and replace it with an empty one. + // This makes sure we get input from the user here and don't interfere + // with the commands being executed. Reset "ex_normal_busy" to avoid + // the side effects of using ":normal". Save the stuff buffer and make + // it empty. Set ignore_script to avoid reading from script input. + save_ex_normal_busy = ex_normal_busy; + ex_normal_busy = 0; + if (!debug_greedy) + { + save_typeahead(&typeaheadbuf); + typeahead_saved = TRUE; + save_ignore_script = ignore_script; + ignore_script = TRUE; + } + + // don't debug any function call, e.g. from an expression mapping + n = debug_break_level; + debug_break_level = -1; + + vim_free(cmdline); + cmdline = getcmdline_prompt('>', NULL, 0, EXPAND_NOTHING, NULL); + + debug_break_level = n; + if (typeahead_saved) + { + restore_typeahead(&typeaheadbuf, TRUE); + ignore_script = save_ignore_script; + } + ex_normal_busy = save_ex_normal_busy; + + cmdline_row = msg_row; + msg_starthere(); + if (cmdline != NULL) + { + // If this is a debug command, set "last_cmd". + // If not, reset "last_cmd". + // For a blank line use previous command. + p = skipwhite(cmdline); + if (*p != NUL) + { + switch (*p) + { + case 'c': last_cmd = CMD_CONT; + tail = "ont"; + break; + case 'n': last_cmd = CMD_NEXT; + tail = "ext"; + break; + case 's': last_cmd = CMD_STEP; + tail = "tep"; + break; + case 'f': + last_cmd = 0; + if (p[1] == 'r') + { + last_cmd = CMD_FRAME; + tail = "rame"; + } + else + { + last_cmd = CMD_FINISH; + tail = "inish"; + } + break; + case 'q': last_cmd = CMD_QUIT; + tail = "uit"; + break; + case 'i': last_cmd = CMD_INTERRUPT; + tail = "nterrupt"; + break; + case 'b': last_cmd = CMD_BACKTRACE; + if (p[1] == 't') + tail = "t"; + else + tail = "acktrace"; + break; + case 'w': last_cmd = CMD_BACKTRACE; + tail = "here"; + break; + case 'u': last_cmd = CMD_UP; + tail = "p"; + break; + case 'd': last_cmd = CMD_DOWN; + tail = "own"; + break; + default: last_cmd = 0; + } + if (last_cmd != 0) + { + // Check that the tail matches. + ++p; + while (*p != NUL && *p == *tail) + { + ++p; + ++tail; + } + if (ASCII_ISALPHA(*p) && last_cmd != CMD_FRAME) + last_cmd = 0; + } + } + + if (last_cmd != 0) + { + // Execute debug command: decide where to break next and + // return. + switch (last_cmd) + { + case CMD_CONT: + debug_break_level = -1; + break; + case CMD_NEXT: + debug_break_level = ex_nesting_level; + break; + case CMD_STEP: + debug_break_level = 9999; + break; + case CMD_FINISH: + debug_break_level = ex_nesting_level - 1; + break; + case CMD_QUIT: + got_int = TRUE; + debug_break_level = -1; + break; + case CMD_INTERRUPT: + got_int = TRUE; + debug_break_level = 9999; + // Do not repeat ">interrupt" cmd, continue stepping. + last_cmd = CMD_STEP; + break; + case CMD_BACKTRACE: + do_showbacktrace(cmd); + continue; + case CMD_FRAME: + if (*p == NUL) + { + do_showbacktrace(cmd); + } + else + { + p = skipwhite(p); + do_setdebugtracelevel(p); + } + continue; + case CMD_UP: + debug_backtrace_level++; + do_checkbacktracelevel(); + continue; + case CMD_DOWN: + debug_backtrace_level--; + do_checkbacktracelevel(); + continue; + } + // Going out reset backtrace_level + debug_backtrace_level = 0; + break; + } + + // don't debug this command + n = debug_break_level; + debug_break_level = -1; + (void)do_cmdline(cmdline, getexline, NULL, + DOCMD_VERBOSE|DOCMD_EXCRESET); + debug_break_level = n; + } + lines_left = Rows - 1; + } + vim_free(cmdline); + + --RedrawingDisabled; + --no_wait_return; + redraw_all_later(UPD_NOT_VALID); + need_wait_return = FALSE; + msg_scroll = save_msg_scroll; + restore_timeout_for_debugging(); + lines_left = Rows - 1; + State = save_State; + debug_mode = FALSE; + did_emsg = save_did_emsg; + cmd_silent = save_cmd_silent; + msg_silent = save_msg_silent; + emsg_silent = save_emsg_silent; + redir_off = save_redir_off; + + // Only print the message again when typing a command before coming back + // here. + debug_did_msg = TRUE; +} + + static int +get_maxbacktrace_level(char_u *sname) +{ + char *p, *q; + int maxbacktrace = 0; + + if (sname == NULL) + return 0; + + p = (char *)sname; + while ((q = strstr(p, "..")) != NULL) + { + p = q + 2; + maxbacktrace++; + } + return maxbacktrace; +} + + static void +do_setdebugtracelevel(char_u *arg) +{ + int level; + + level = atoi((char *)arg); + if (*arg == '+' || level < 0) + debug_backtrace_level += level; + else + debug_backtrace_level = level; + + do_checkbacktracelevel(); +} + + static void +do_checkbacktracelevel(void) +{ + if (debug_backtrace_level < 0) + { + debug_backtrace_level = 0; + msg(_("frame is zero")); + } + else + { + char_u *sname = estack_sfile(ESTACK_NONE); + int max = get_maxbacktrace_level(sname); + + if (debug_backtrace_level > max) + { + debug_backtrace_level = max; + smsg(_("frame at highest level: %d"), max); + } + vim_free(sname); + } +} + + static void +do_showbacktrace(char_u *cmd) +{ + char_u *sname; + char *cur; + char *next; + int i = 0; + int max; + + sname = estack_sfile(ESTACK_NONE); + max = get_maxbacktrace_level(sname); + if (sname != NULL) + { + cur = (char *)sname; + while (!got_int) + { + next = strstr(cur, ".."); + if (next != NULL) + *next = NUL; + if (i == max - debug_backtrace_level) + smsg("->%d %s", max - i, cur); + else + smsg(" %d %s", max - i, cur); + ++i; + if (next == NULL) + break; + *next = '.'; + cur = next + 2; + } + vim_free(sname); + } + + if (SOURCING_LNUM != 0) + smsg(_("line %ld: %s"), (long)SOURCING_LNUM, cmd); + else + smsg(_("cmd: %s"), cmd); +} + +/* + * ":debug". + */ + void +ex_debug(exarg_T *eap) +{ + int debug_break_level_save = debug_break_level; + + debug_break_level = 9999; + do_cmdline_cmd(eap->arg); + debug_break_level = debug_break_level_save; +} + +static char_u *debug_breakpoint_name = NULL; +static linenr_T debug_breakpoint_lnum; + +/* + * When debugging or a breakpoint is set on a skipped command, no debug prompt + * is shown by do_one_cmd(). This situation is indicated by debug_skipped, and + * debug_skipped_name is then set to the source name in the breakpoint case. If + * a skipped command decides itself that a debug prompt should be displayed, it + * can do so by calling dbg_check_skipped(). + */ +static int debug_skipped; +static char_u *debug_skipped_name; + +/* + * Go to debug mode when a breakpoint was encountered or "ex_nesting_level" is + * at or below the break level. But only when the line is actually + * executed. Return TRUE and set breakpoint_name for skipped commands that + * decide to execute something themselves. + * Called from do_one_cmd() before executing a command. + */ + void +dbg_check_breakpoint(exarg_T *eap) +{ + char_u *p; + + debug_skipped = FALSE; + if (debug_breakpoint_name != NULL) + { + if (!eap->skip) + { + // replace K_SNR with "<SNR>" + if (debug_breakpoint_name[0] == K_SPECIAL + && debug_breakpoint_name[1] == KS_EXTRA + && debug_breakpoint_name[2] == KE_SNR) + p = (char_u *)"<SNR>"; + else + p = (char_u *)""; + smsg(_("Breakpoint in \"%s%s\" line %ld"), + p, + debug_breakpoint_name + (*p == NUL ? 0 : 3), + (long)debug_breakpoint_lnum); + debug_breakpoint_name = NULL; + do_debug(eap->cmd); + } + else + { + debug_skipped = TRUE; + debug_skipped_name = debug_breakpoint_name; + debug_breakpoint_name = NULL; + } + } + else if (ex_nesting_level <= debug_break_level) + { + if (!eap->skip) + do_debug(eap->cmd); + else + { + debug_skipped = TRUE; + debug_skipped_name = NULL; + } + } +} + +/* + * Go to debug mode if skipped by dbg_check_breakpoint() because eap->skip was + * set. Return TRUE when the debug mode is entered this time. + */ + int +dbg_check_skipped(exarg_T *eap) +{ + int prev_got_int; + + if (!debug_skipped) + return FALSE; + + // Save the value of got_int and reset it. We don't want a previous + // interruption cause flushing the input buffer. + prev_got_int = got_int; + got_int = FALSE; + debug_breakpoint_name = debug_skipped_name; + // eap->skip is TRUE + eap->skip = FALSE; + (void)dbg_check_breakpoint(eap); + eap->skip = TRUE; + got_int |= prev_got_int; + return TRUE; +} + +/* + * The list of breakpoints: dbg_breakp. + * This is a grow-array of structs. + */ +struct debuggy +{ + int dbg_nr; // breakpoint number + int dbg_type; // DBG_FUNC, DBG_FILE or DBG_EXPR + char_u *dbg_name; // function, expression or file name + regprog_T *dbg_prog; // regexp program + linenr_T dbg_lnum; // line number in function or file + int dbg_forceit; // ! used +#ifdef FEAT_EVAL + typval_T *dbg_val; // last result of watchexpression +#endif + int dbg_level; // stored nested level for expr +}; + +static garray_T dbg_breakp = {0, 0, sizeof(struct debuggy), 4, NULL}; +#define BREAKP(idx) (((struct debuggy *)dbg_breakp.ga_data)[idx]) +#define DEBUGGY(gap, idx) (((struct debuggy *)gap->ga_data)[idx]) +static int last_breakp = 0; // nr of last defined breakpoint +static int has_expr_breakpoint = FALSE; + +#ifdef FEAT_PROFILE +// Profiling uses file and func names similar to breakpoints. +static garray_T prof_ga = {0, 0, sizeof(struct debuggy), 4, NULL}; +#endif +#define DBG_FUNC 1 +#define DBG_FILE 2 +#define DBG_EXPR 3 + +static linenr_T debuggy_find(int file,char_u *fname, linenr_T after, garray_T *gap, int *fp); + +/* + * Evaluate the "bp->dbg_name" expression and return the result. + * Disables error messages. + */ + static typval_T * +eval_expr_no_emsg(struct debuggy *bp) +{ + typval_T *tv; + + // Disable error messages, a bad expression would make Vim unusable. + ++emsg_off; + tv = eval_expr(bp->dbg_name, NULL); + --emsg_off; + + return tv; +} + +/* + * Parse the arguments of ":profile", ":breakadd" or ":breakdel" and put them + * in the entry just after the last one in dbg_breakp. Note that "dbg_name" + * is allocated. + * Returns FAIL for failure. + */ + static int +dbg_parsearg( + char_u *arg, + garray_T *gap) // either &dbg_breakp or &prof_ga +{ + char_u *p = arg; + char_u *q; + struct debuggy *bp; + int here = FALSE; + + if (ga_grow(gap, 1) == FAIL) + return FAIL; + bp = &DEBUGGY(gap, gap->ga_len); + + // Find "func" or "file". + if (STRNCMP(p, "func", 4) == 0) + bp->dbg_type = DBG_FUNC; + else if (STRNCMP(p, "file", 4) == 0) + bp->dbg_type = DBG_FILE; + else if ( +#ifdef FEAT_PROFILE + gap != &prof_ga && +#endif + STRNCMP(p, "here", 4) == 0) + { + if (curbuf->b_ffname == NULL) + { + emsg(_(e_no_file_name)); + return FAIL; + } + bp->dbg_type = DBG_FILE; + here = TRUE; + } + else if ( +#ifdef FEAT_PROFILE + gap != &prof_ga && +#endif + STRNCMP(p, "expr", 4) == 0) + bp->dbg_type = DBG_EXPR; + else + { + semsg(_(e_invalid_argument_str), p); + return FAIL; + } + p = skipwhite(p + 4); + + // Find optional line number. + if (here) + bp->dbg_lnum = curwin->w_cursor.lnum; + else if ( +#ifdef FEAT_PROFILE + gap != &prof_ga && +#endif + VIM_ISDIGIT(*p)) + { + bp->dbg_lnum = getdigits(&p); + p = skipwhite(p); + } + else + bp->dbg_lnum = 0; + + // Find the function or file name. Don't accept a function name with (). + if ((!here && *p == NUL) + || (here && *p != NUL) + || (bp->dbg_type == DBG_FUNC && strstr((char *)p, "()") != NULL)) + { + semsg(_(e_invalid_argument_str), arg); + return FAIL; + } + + if (bp->dbg_type == DBG_FUNC) + bp->dbg_name = vim_strsave(STRNCMP(p, "g:", 2) == 0 ? p + 2 : p); + else if (here) + bp->dbg_name = vim_strsave(curbuf->b_ffname); + else if (bp->dbg_type == DBG_EXPR) + { + bp->dbg_name = vim_strsave(p); + if (bp->dbg_name != NULL) + bp->dbg_val = eval_expr_no_emsg(bp); + } + else + { + // Expand the file name in the same way as do_source(). This means + // doing it twice, so that $DIR/file gets expanded when $DIR is + // "~/dir". + q = expand_env_save(p); + if (q == NULL) + return FAIL; + p = expand_env_save(q); + vim_free(q); + if (p == NULL) + return FAIL; + if (*p != '*') + { + bp->dbg_name = fix_fname(p); + vim_free(p); + } + else + bp->dbg_name = p; + } + + if (bp->dbg_name == NULL) + return FAIL; + return OK; +} + +/* + * ":breakadd". Also used for ":profile". + */ + void +ex_breakadd(exarg_T *eap) +{ + struct debuggy *bp; + char_u *pat; + garray_T *gap; + + gap = &dbg_breakp; +#ifdef FEAT_PROFILE + if (eap->cmdidx == CMD_profile) + gap = &prof_ga; +#endif + + if (dbg_parsearg(eap->arg, gap) != OK) + return; + + bp = &DEBUGGY(gap, gap->ga_len); + bp->dbg_forceit = eap->forceit; + + if (bp->dbg_type != DBG_EXPR) + { + pat = file_pat_to_reg_pat(bp->dbg_name, NULL, NULL, FALSE); + if (pat != NULL) + { + bp->dbg_prog = vim_regcomp(pat, RE_MAGIC + RE_STRING); + vim_free(pat); + } + if (pat == NULL || bp->dbg_prog == NULL) + vim_free(bp->dbg_name); + else + { + if (bp->dbg_lnum == 0) // default line number is 1 + bp->dbg_lnum = 1; +#ifdef FEAT_PROFILE + if (eap->cmdidx != CMD_profile) +#endif + { + DEBUGGY(gap, gap->ga_len).dbg_nr = ++last_breakp; + ++debug_tick; + } + ++gap->ga_len; + } + } + else + { + // DBG_EXPR + DEBUGGY(gap, gap->ga_len++).dbg_nr = ++last_breakp; + ++debug_tick; + if (gap == &dbg_breakp) + has_expr_breakpoint = TRUE; + } +} + +/* + * ":debuggreedy". + */ + void +ex_debuggreedy(exarg_T *eap) +{ + if (eap->addr_count == 0 || eap->line2 != 0) + debug_greedy = TRUE; + else + debug_greedy = FALSE; +} + + static void +update_has_expr_breakpoint(void) +{ + int i; + + has_expr_breakpoint = FALSE; + for (i = 0; i < dbg_breakp.ga_len; ++i) + if (BREAKP(i).dbg_type == DBG_EXPR) + { + has_expr_breakpoint = TRUE; + break; + } +} + +/* + * Return TRUE if there is any expression breakpoint. + */ + int +debug_has_expr_breakpoint(void) +{ + return has_expr_breakpoint; +} + +/* + * ":breakdel" and ":profdel". + */ + void +ex_breakdel(exarg_T *eap) +{ + struct debuggy *bp, *bpi; + int nr; + int todel = -1; + int del_all = FALSE; + int i; + linenr_T best_lnum = 0; + garray_T *gap; + + gap = &dbg_breakp; + if (eap->cmdidx == CMD_profdel) + { +#ifdef FEAT_PROFILE + gap = &prof_ga; +#else + ex_ni(eap); + return; +#endif + } + + if (vim_isdigit(*eap->arg)) + { + // ":breakdel {nr}" + nr = atol((char *)eap->arg); + for (i = 0; i < gap->ga_len; ++i) + if (DEBUGGY(gap, i).dbg_nr == nr) + { + todel = i; + break; + } + } + else if (*eap->arg == '*') + { + todel = 0; + del_all = TRUE; + } + else + { + // ":breakdel {func|file|expr} [lnum] {name}" + if (dbg_parsearg(eap->arg, gap) == FAIL) + return; + bp = &DEBUGGY(gap, gap->ga_len); + for (i = 0; i < gap->ga_len; ++i) + { + bpi = &DEBUGGY(gap, i); + if (bp->dbg_type == bpi->dbg_type + && STRCMP(bp->dbg_name, bpi->dbg_name) == 0 + && (bp->dbg_lnum == bpi->dbg_lnum + || (bp->dbg_lnum == 0 + && (best_lnum == 0 + || bpi->dbg_lnum < best_lnum)))) + { + todel = i; + best_lnum = bpi->dbg_lnum; + } + } + vim_free(bp->dbg_name); + } + + if (todel < 0) + { + semsg(_(e_breakpoint_not_found_str), eap->arg); + return; + } + + while (gap->ga_len > 0) + { + vim_free(DEBUGGY(gap, todel).dbg_name); +#ifdef FEAT_EVAL + if (DEBUGGY(gap, todel).dbg_type == DBG_EXPR + && DEBUGGY(gap, todel).dbg_val != NULL) + free_tv(DEBUGGY(gap, todel).dbg_val); +#endif + vim_regfree(DEBUGGY(gap, todel).dbg_prog); + --gap->ga_len; + if (todel < gap->ga_len) + mch_memmove(&DEBUGGY(gap, todel), &DEBUGGY(gap, todel + 1), + (gap->ga_len - todel) * sizeof(struct debuggy)); +#ifdef FEAT_PROFILE + if (eap->cmdidx == CMD_breakdel) +#endif + ++debug_tick; + if (!del_all) + break; + } + + // If all breakpoints were removed clear the array. + if (gap->ga_len == 0) + ga_clear(gap); + if (gap == &dbg_breakp) + update_has_expr_breakpoint(); +} + +/* + * ":breaklist". + */ + void +ex_breaklist(exarg_T *eap UNUSED) +{ + struct debuggy *bp; + int i; + + if (dbg_breakp.ga_len == 0) + { + msg(_("No breakpoints defined")); + return; + } + + for (i = 0; i < dbg_breakp.ga_len; ++i) + { + bp = &BREAKP(i); + if (bp->dbg_type == DBG_FILE) + home_replace(NULL, bp->dbg_name, NameBuff, MAXPATHL, TRUE); + if (bp->dbg_type != DBG_EXPR) + smsg(_("%3d %s %s line %ld"), + bp->dbg_nr, + bp->dbg_type == DBG_FUNC ? "func" : "file", + bp->dbg_type == DBG_FUNC ? bp->dbg_name : NameBuff, + (long)bp->dbg_lnum); + else + smsg(_("%3d expr %s"), + bp->dbg_nr, bp->dbg_name); + } +} + +/* + * Find a breakpoint for a function or sourced file. + * Returns line number at which to break; zero when no matching breakpoint. + */ + linenr_T +dbg_find_breakpoint( + int file, // TRUE for a file, FALSE for a function + char_u *fname, // file or function name + linenr_T after) // after this line number +{ + return debuggy_find(file, fname, after, &dbg_breakp, NULL); +} + +#if defined(FEAT_PROFILE) || defined(PROTO) +/* + * Return TRUE if profiling is on for a function or sourced file. + */ + int +has_profiling( + int file, // TRUE for a file, FALSE for a function + char_u *fname, // file or function name + int *fp) // return: forceit +{ + return (debuggy_find(file, fname, (linenr_T)0, &prof_ga, fp) + != (linenr_T)0); +} +#endif + +/* + * Common code for dbg_find_breakpoint() and has_profiling(). + */ + static linenr_T +debuggy_find( + int is_file, // TRUE for a file, FALSE for a function + char_u *fname, // file or function name + linenr_T after, // after this line number + garray_T *gap, // either &dbg_breakp or &prof_ga + int *fp) // if not NULL: return forceit +{ + struct debuggy *bp; + int i; + linenr_T lnum = 0; + char_u *name = NULL; + char_u *short_name = fname; + int prev_got_int; + + // Return quickly when there are no breakpoints. + if (gap->ga_len == 0) + return (linenr_T)0; + + // For a script-local function remove the prefix, so that + // "profile func Func" matches "Func" in any script. Otherwise it's very + // difficult to profile/debug a script-local function. It may match a + // function in the wrong script, but that is much better than not being + // able to profile/debug a function in a script with unknown ID. + // Also match a script-specific name. + if (!is_file && fname[0] == K_SPECIAL) + { + short_name = vim_strchr(fname, '_') + 1; + name = alloc(STRLEN(fname) + 3); + if (name != NULL) + { + STRCPY(name, "<SNR>"); + STRCPY(name + 5, fname + 3); + } + } + + for (i = 0; i < gap->ga_len; ++i) + { + // Skip entries that are not useful or are for a line that is beyond + // an already found breakpoint. + bp = &DEBUGGY(gap, i); + if (((bp->dbg_type == DBG_FILE) == is_file + && bp->dbg_type != DBG_EXPR && ( +#ifdef FEAT_PROFILE + gap == &prof_ga || +#endif + (bp->dbg_lnum > after && (lnum == 0 || bp->dbg_lnum < lnum))))) + { + // Save the value of got_int and reset it. We don't want a + // previous interruption cancel matching, only hitting CTRL-C + // while matching should abort it. + prev_got_int = got_int; + got_int = FALSE; + if ((name != NULL + && vim_regexec_prog(&bp->dbg_prog, FALSE, name, (colnr_T)0)) + || vim_regexec_prog(&bp->dbg_prog, FALSE, + short_name, (colnr_T)0)) + { + lnum = bp->dbg_lnum; + if (fp != NULL) + *fp = bp->dbg_forceit; + } + got_int |= prev_got_int; + } +#ifdef FEAT_EVAL + else if (bp->dbg_type == DBG_EXPR) + { + typval_T *tv; + int line = FALSE; + + tv = eval_expr_no_emsg(bp); + if (tv != NULL) + { + if (bp->dbg_val == NULL) + { + debug_oldval = typval_tostring(NULL, TRUE); + bp->dbg_val = tv; + debug_newval = typval_tostring(bp->dbg_val, TRUE); + line = TRUE; + } + else + { + // Use "==" instead of "is" for strings, that is what we + // always have done. + exprtype_T type = tv->v_type == VAR_STRING + ? EXPR_EQUAL : EXPR_IS; + + if (typval_compare(tv, bp->dbg_val, type, FALSE) == OK + && tv->vval.v_number == FALSE) + { + typval_T *v; + + line = TRUE; + debug_oldval = typval_tostring(bp->dbg_val, TRUE); + // Need to evaluate again, typval_compare() overwrites + // "tv". + v = eval_expr_no_emsg(bp); + debug_newval = typval_tostring(v, TRUE); + free_tv(bp->dbg_val); + bp->dbg_val = v; + } + free_tv(tv); + } + } + else if (bp->dbg_val != NULL) + { + debug_oldval = typval_tostring(bp->dbg_val, TRUE); + debug_newval = typval_tostring(NULL, TRUE); + free_tv(bp->dbg_val); + bp->dbg_val = NULL; + line = TRUE; + } + + if (line) + { + lnum = after > 0 ? after : 1; + break; + } + } +#endif + } + if (name != fname) + vim_free(name); + + return lnum; +} + +/* + * Called when a breakpoint was encountered. + */ + void +dbg_breakpoint(char_u *name, linenr_T lnum) +{ + // We need to check if this line is actually executed in do_one_cmd() + debug_breakpoint_name = name; + debug_breakpoint_lnum = lnum; +} +#endif |