From 14c01f83487d5c53192297a710eda2b8a4ab17c9 Mon Sep 17 00:00:00 2001 From: Bram Moolenaar Date: Wed, 9 Oct 2019 22:53:08 +0200 Subject: patch 8.1.2127: the indent.c file is a bit big Problem: The indent.c file is a bit big. Solution: Move C-indent code a a new cindent.c file. Move other indent-related code to indent.c. (Yegappan Lakshmanan, closes #5031) --- src/Make_cyg_ming.mak | 1 + src/Make_morph.mak | 1 + src/Make_mvc.mak | 4 + src/Make_vms.mms | 6 + src/Makefile | 10 + src/README.md | 3 +- src/change.c | 145 -- src/cindent.c | 4133 +++++++++++++++++++++++++++++++++ src/edit.c | 341 +-- src/evalfunc.c | 64 - src/ex_cmds.c | 215 -- src/globals.h | 2 + src/indent.c | 6026 +++++++++++++------------------------------------ src/misc1.c | 556 ----- src/ops.c | 107 - src/proto.h | 1 + src/proto/cindent.pro | 10 + src/proto/edit.pro | 2 +- src/proto/ex_cmds.pro | 1 - src/proto/indent.pro | 33 +- src/proto/misc1.pro | 9 - src/proto/ops.pro | 1 - src/userfunc.c | 2 +- src/version.c | 2 + 24 files changed, 5824 insertions(+), 5851 deletions(-) create mode 100644 src/cindent.c create mode 100644 src/proto/cindent.pro (limited to 'src') diff --git a/src/Make_cyg_ming.mak b/src/Make_cyg_ming.mak index 503761c54d..f04d11b188 100644 --- a/src/Make_cyg_ming.mak +++ b/src/Make_cyg_ming.mak @@ -712,6 +712,7 @@ OBJ = \ $(OUTDIR)/bufwrite.o \ $(OUTDIR)/change.o \ $(OUTDIR)/charset.o \ + $(OUTDIR)/cindent.o \ $(OUTDIR)/cmdexpand.o \ $(OUTDIR)/cmdhist.o \ $(OUTDIR)/crypt.o \ diff --git a/src/Make_morph.mak b/src/Make_morph.mak index 247a5788fe..bb5805c4d2 100644 --- a/src/Make_morph.mak +++ b/src/Make_morph.mak @@ -32,6 +32,7 @@ SRC = arabic.c \ bufwrite.c \ change.c \ charset.c \ + cindent.c \ cmdexpand.c \ cmdhist.c \ crypt.c \ diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak index e853ae9b17..4fb045aff7 100644 --- a/src/Make_mvc.mak +++ b/src/Make_mvc.mak @@ -719,6 +719,7 @@ OBJ = \ $(OUTDIR)\bufwrite.obj \ $(OUTDIR)\change.obj \ $(OUTDIR)\charset.obj \ + $(OUTDIR)\cindent.obj \ $(OUTDIR)\cmdexpand.obj \ $(OUTDIR)\cmdhist.obj \ $(OUTDIR)\crypt.obj \ @@ -1464,6 +1465,8 @@ $(OUTDIR)/change.obj: $(OUTDIR) change.c $(INCL) $(OUTDIR)/charset.obj: $(OUTDIR) charset.c $(INCL) +$(OUTDIR)/cindent.obj: $(OUTDIR) cindent.c $(INCL) + $(OUTDIR)/cmdexpand.obj: $(OUTDIR) cmdexpand.c $(INCL) $(OUTDIR)/cmdhist.obj: $(OUTDIR) cmdhist.c $(INCL) @@ -1794,6 +1797,7 @@ proto.h: \ proto/bufwrite.pro \ proto/change.pro \ proto/charset.pro \ + proto/cindent.pro \ proto/cmdexpand.pro \ proto/cmdhist.pro \ proto/crypt.pro \ diff --git a/src/Make_vms.mms b/src/Make_vms.mms index 6046b5a235..3decf69116 100644 --- a/src/Make_vms.mms +++ b/src/Make_vms.mms @@ -318,6 +318,7 @@ SRC = \ bufwrite.c \ change.c \ charset.c \ + cindent.c \ cmdexpand.c \ cmdhist.c \ crypt.c \ @@ -420,6 +421,7 @@ OBJ = \ bufwrite.obj \ change.obj \ charset.obj \ + cindent.obj \ cmdexpand.obj \ cmdhist.obj \ crypt.obj \ @@ -700,6 +702,10 @@ charset.obj : charset.c vim.h [.auto]config.h feature.h os_unix.h \ ascii.h keymap.h term.h macros.h structs.h regexp.h \ gui.h beval.h [.proto]gui_beval.pro option.h ex_cmds.h proto.h \ globals.h +cindent.obj : cindent.c vim.h [.auto]config.h feature.h os_unix.h \ + ascii.h keymap.h term.h macros.h structs.h regexp.h \ + gui.h beval.h [.proto]gui_beval.pro option.h ex_cmds.h proto.h \ + globals.h cmdexpand.obj : cmdexpand.c vim.h [.auto]config.h feature.h os_unix.h \ ascii.h keymap.h term.h macros.h structs.h regexp.h \ gui.h beval.h [.proto]gui_beval.pro option.h ex_cmds.h proto.h \ diff --git a/src/Makefile b/src/Makefile index cae0e5ff9e..f169548556 100644 --- a/src/Makefile +++ b/src/Makefile @@ -1585,6 +1585,7 @@ BASIC_SRC = \ buffer.c \ change.c \ charset.c \ + cindent.c \ cmdexpand.c \ cmdhist.c \ crypt.c \ @@ -1725,6 +1726,7 @@ OBJ_COMMON = \ objects/change.o \ objects/blob.o \ objects/blowfish.o \ + objects/cindent.o \ objects/cmdexpand.o \ objects/cmdhist.o \ objects/crypt.o \ @@ -1878,6 +1880,7 @@ PRO_AUTO = \ buffer.pro \ change.pro \ charset.pro \ + cindent.pro \ cmdexpand.pro \ cmdhist.pro \ crypt.pro \ @@ -3081,6 +3084,9 @@ objects/change.o: change.c objects/charset.o: charset.c $(CCC) -o $@ charset.c +objects/cindent.o: cindent.c + $(CCC) -o $@ cindent.c + objects/cmdexpand.o: cmdexpand.c $(CCC) -o $@ cmdexpand.c @@ -3621,6 +3627,10 @@ objects/charset.o: charset.c vim.h protodef.h auto/config.h feature.h os_unix.h auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \ proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \ proto.h globals.h +objects/cindent.o: cindent.c vim.h protodef.h auto/config.h feature.h os_unix.h \ + auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \ + proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \ + proto.h globals.h objects/cmdexpand.o: cmdexpand.c vim.h protodef.h auto/config.h feature.h os_unix.h \ auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \ proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \ diff --git a/src/README.md b/src/README.md index 8d20140851..5d17308425 100644 --- a/src/README.md +++ b/src/README.md @@ -29,6 +29,7 @@ blob.c | blob data type buffer.c | manipulating buffers (loaded files) bufwrite.c | writing a buffer to file change.c | handling changes to text +cindent.c | C and Lisp indentation cmdexpand.c | command-line completion cmdhist.c | command-line history debugger.c | vim script debugger @@ -46,7 +47,7 @@ findfile.c | search for files in 'path' fold.c | folding getchar.c | getting characters and key mapping highlight.c | syntax highlighting -indent.c | C and Lisp indentation +indent.c | text indentation insexpand.c | Insert mode completion mark.c | marks map.c | mapping and abbreviations diff --git a/src/change.c b/src/change.c index 0eb00c2836..caf9db0d71 100644 --- a/src/change.c +++ b/src/change.c @@ -1250,151 +1250,6 @@ del_bytes( return OK; } -/* - * Copy the indent from ptr to the current line (and fill to size) - * Leaves the cursor on the first non-blank in the line. - * Returns TRUE if the line was changed. - */ - static int -copy_indent(int size, char_u *src) -{ - char_u *p = NULL; - char_u *line = NULL; - char_u *s; - int todo; - int ind_len; - int line_len = 0; - int tab_pad; - int ind_done; - int round; -#ifdef FEAT_VARTABS - int ind_col; -#endif - - // Round 1: compute the number of characters needed for the indent - // Round 2: copy the characters. - for (round = 1; round <= 2; ++round) - { - todo = size; - ind_len = 0; - ind_done = 0; -#ifdef FEAT_VARTABS - ind_col = 0; -#endif - s = src; - - // Count/copy the usable portion of the source line - while (todo > 0 && VIM_ISWHITE(*s)) - { - if (*s == TAB) - { -#ifdef FEAT_VARTABS - tab_pad = tabstop_padding(ind_done, curbuf->b_p_ts, - curbuf->b_p_vts_array); -#else - tab_pad = (int)curbuf->b_p_ts - - (ind_done % (int)curbuf->b_p_ts); -#endif - // Stop if this tab will overshoot the target - if (todo < tab_pad) - break; - todo -= tab_pad; - ind_done += tab_pad; -#ifdef FEAT_VARTABS - ind_col += tab_pad; -#endif - } - else - { - --todo; - ++ind_done; -#ifdef FEAT_VARTABS - ++ind_col; -#endif - } - ++ind_len; - if (p != NULL) - *p++ = *s; - ++s; - } - - // Fill to next tabstop with a tab, if possible -#ifdef FEAT_VARTABS - tab_pad = tabstop_padding(ind_done, curbuf->b_p_ts, - curbuf->b_p_vts_array); -#else - tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts); -#endif - if (todo >= tab_pad && !curbuf->b_p_et) - { - todo -= tab_pad; - ++ind_len; -#ifdef FEAT_VARTABS - ind_col += tab_pad; -#endif - if (p != NULL) - *p++ = TAB; - } - - // Add tabs required for indent - if (!curbuf->b_p_et) - { -#ifdef FEAT_VARTABS - for (;;) - { - tab_pad = tabstop_padding(ind_col, curbuf->b_p_ts, - curbuf->b_p_vts_array); - if (todo < tab_pad) - break; - todo -= tab_pad; - ++ind_len; - ind_col += tab_pad; - if (p != NULL) - *p++ = TAB; - } -#else - while (todo >= (int)curbuf->b_p_ts) - { - todo -= (int)curbuf->b_p_ts; - ++ind_len; - if (p != NULL) - *p++ = TAB; - } -#endif - } - - // Count/add spaces required for indent - while (todo > 0) - { - --todo; - ++ind_len; - if (p != NULL) - *p++ = ' '; - } - - if (p == NULL) - { - // Allocate memory for the result: the copied indent, new indent - // and the rest of the line. - line_len = (int)STRLEN(ml_get_curline()) + 1; - line = alloc(ind_len + line_len); - if (line == NULL) - return FALSE; - p = line; - } - } - - // Append the original line - mch_memmove(p, ml_get_curline(), (size_t)line_len); - - // Replace the line - ml_replace(curwin->w_cursor.lnum, line, FALSE); - - // Put the cursor after the indent. - curwin->w_cursor.col = ind_len; - return TRUE; -} - /* * open_line: Add a new line below or above the current line. * diff --git a/src/cindent.c b/src/cindent.c new file mode 100644 index 0000000000..dd416720a9 --- /dev/null +++ b/src/cindent.c @@ -0,0 +1,4133 @@ +/* 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. + */ + +/* + * cindent.c: C indentation related functions + * + * Many of C-indenting functions originally come from Eric Fischer. + * + * Below "XXX" means that this function may unlock the current line. + */ + +#include "vim.h" + +// values for the "lookfor" state +#define LOOKFOR_INITIAL 0 +#define LOOKFOR_IF 1 +#define LOOKFOR_DO 2 +#define LOOKFOR_CASE 3 +#define LOOKFOR_ANY 4 +#define LOOKFOR_TERM 5 +#define LOOKFOR_UNTERM 6 +#define LOOKFOR_SCOPEDECL 7 +#define LOOKFOR_NOBREAK 8 +#define LOOKFOR_CPP_BASECLASS 9 +#define LOOKFOR_ENUM_OR_INIT 10 +#define LOOKFOR_JS_KEY 11 +#define LOOKFOR_COMMA 12 + +#if defined(FEAT_CINDENT) || defined(FEAT_SMARTINDENT) +/* + * Return TRUE if the string "line" starts with a word from 'cinwords'. + */ + int +cin_is_cinword(char_u *line) +{ + char_u *cinw; + char_u *cinw_buf; + int cinw_len; + int retval = FALSE; + int len; + + cinw_len = (int)STRLEN(curbuf->b_p_cinw) + 1; + cinw_buf = alloc(cinw_len); + if (cinw_buf != NULL) + { + line = skipwhite(line); + for (cinw = curbuf->b_p_cinw; *cinw; ) + { + len = copy_option_part(&cinw, cinw_buf, cinw_len, ","); + if (STRNCMP(line, cinw_buf, len) == 0 + && (!vim_iswordc(line[len]) || !vim_iswordc(line[len - 1]))) + { + retval = TRUE; + break; + } + } + vim_free(cinw_buf); + } + return retval; +} +#endif + +#if defined(FEAT_CINDENT) || defined(FEAT_SYN_HL) + +/* + * Skip to the end of a "string" and a 'c' character. + * If there is no string or character, return argument unmodified. + */ + static char_u * +skip_string(char_u *p) +{ + int i; + + // We loop, because strings may be concatenated: "date""time". + for ( ; ; ++p) + { + if (p[0] == '\'') // 'c' or '\n' or '\000' + { + if (!p[1]) // ' at end of line + break; + i = 2; + if (p[1] == '\\') // '\n' or '\000' + { + ++i; + while (vim_isdigit(p[i - 1])) // '\000' + ++i; + } + if (p[i] == '\'') // check for trailing ' + { + p += i; + continue; + } + } + else if (p[0] == '"') // start of string + { + for (++p; p[0]; ++p) + { + if (p[0] == '\\' && p[1] != NUL) + ++p; + else if (p[0] == '"') // end of string + break; + } + if (p[0] == '"') + continue; // continue for another string + } + else if (p[0] == 'R' && p[1] == '"') + { + // Raw string: R"[delim](...)[delim]" + char_u *delim = p + 2; + char_u *paren = vim_strchr(delim, '('); + + if (paren != NULL) + { + size_t delim_len = paren - delim; + + for (p += 3; *p; ++p) + if (p[0] == ')' && STRNCMP(p + 1, delim, delim_len) == 0 + && p[delim_len + 1] == '"') + { + p += delim_len + 1; + break; + } + if (p[0] == '"') + continue; // continue for another string + } + } + break; // no string found + } + if (!*p) + --p; // backup from NUL + return p; +} + +/* + * Find the start of a comment, not knowing if we are in a comment right now. + * Search starts at w_cursor.lnum and goes backwards. + * Return NULL when not inside a comment. + */ + static pos_T * +ind_find_start_comment(void) // XXX +{ + return find_start_comment(curbuf->b_ind_maxcomment); +} + + pos_T * +find_start_comment(int ind_maxcomment) // XXX +{ + pos_T *pos; + char_u *line; + char_u *p; + int cur_maxcomment = ind_maxcomment; + + for (;;) + { + pos = findmatchlimit(NULL, '*', FM_BACKWARD, cur_maxcomment); + if (pos == NULL) + break; + + // Check if the comment start we found is inside a string. + // If it is then restrict the search to below this line and try again. + line = ml_get(pos->lnum); + for (p = line; *p && (colnr_T)(p - line) < pos->col; ++p) + p = skip_string(p); + if ((colnr_T)(p - line) <= pos->col) + break; + cur_maxcomment = curwin->w_cursor.lnum - pos->lnum - 1; + if (cur_maxcomment <= 0) + { + pos = NULL; + break; + } + } + return pos; +} + +/* + * Find the start of a raw string, not knowing if we are in one right now. + * Search starts at w_cursor.lnum and goes backwards. + * Return NULL when not inside a raw string. + */ + static pos_T * +find_start_rawstring(int ind_maxcomment) // XXX +{ + pos_T *pos; + char_u *line; + char_u *p; + int cur_maxcomment = ind_maxcomment; + + for (;;) + { + pos = findmatchlimit(NULL, 'R', FM_BACKWARD, cur_maxcomment); + if (pos == NULL) + break; + + // Check if the raw string start we found is inside a string. + // If it is then restrict the search to below this line and try again. + line = ml_get(pos->lnum); + for (p = line; *p && (colnr_T)(p - line) < pos->col; ++p) + p = skip_string(p); + if ((colnr_T)(p - line) <= pos->col) + break; + cur_maxcomment = curwin->w_cursor.lnum - pos->lnum - 1; + if (cur_maxcomment <= 0) + { + pos = NULL; + break; + } + } + return pos; +} + +/* + * Find the start of a comment or raw string, not knowing if we are in a + * comment or raw string right now. + * Search starts at w_cursor.lnum and goes backwards. + * If is_raw is given and returns start of raw_string, sets it to true. + * Return NULL when not inside a comment or raw string. + * "CORS" -> Comment Or Raw String + */ + static pos_T * +ind_find_start_CORS(linenr_T *is_raw) // XXX +{ + static pos_T comment_pos_copy; + pos_T *comment_pos; + pos_T *rs_pos; + + comment_pos = find_start_comment(curbuf->b_ind_maxcomment); + if (comment_pos != NULL) + { + // Need to make a copy of the static pos in findmatchlimit(), + // calling find_start_rawstring() may change it. + comment_pos_copy = *comment_pos; + comment_pos = &comment_pos_copy; + } + rs_pos = find_start_rawstring(curbuf->b_ind_maxcomment); + + // If comment_pos is before rs_pos the raw string is inside the comment. + // If rs_pos is before comment_pos the comment is inside the raw string. + if (comment_pos == NULL || (rs_pos != NULL + && LT_POS(*rs_pos, *comment_pos))) + { + if (is_raw != NULL && rs_pos != NULL) + *is_raw = rs_pos->lnum; + return rs_pos; + } + return comment_pos; +} +#endif // FEAT_CINDENT || FEAT_SYN_HL + +#if defined(FEAT_CINDENT) || defined(PROTO) + +/* + * Return TRUE if C-indenting is on. + */ + int +cindent_on(void) +{ + return (!p_paste && (curbuf->b_p_cin +# ifdef FEAT_EVAL + || *curbuf->b_p_inde != NUL +# endif + )); +} + +// Find result cache for cpp_baseclass +typedef struct { + int found; + lpos_T lpos; +} cpp_baseclass_cache_T; + +/* + * Skip over white space and C comments within the line. + * Also skip over Perl/shell comments if desired. + */ + static char_u * +cin_skipcomment(char_u *s) +{ + while (*s) + { + char_u *prev_s = s; + + s = skipwhite(s); + + // Perl/shell # comment comment continues until eol. Require a space + // before # to avoid recognizing $#array. + if (curbuf->b_ind_hash_comment != 0 && s != prev_s && *s == '#') + { + s += STRLEN(s); + break; + } + if (*s != '/') + break; + ++s; + if (*s == '/') // slash-slash comment continues till eol + { + s += STRLEN(s); + break; + } + if (*s != '*') + break; + for (++s; *s; ++s) // skip slash-star comment + if (s[0] == '*' && s[1] == '/') + { + s += 2; + break; + } + } + return s; +} + +/* + * Return TRUE if there is no code at *s. White space and comments are + * not considered code. + */ + static int +cin_nocode(char_u *s) +{ + return *cin_skipcomment(s) == NUL; +} + +/* + * Recognize the start of a C or C++ comment. + */ + static int +cin_iscomment(char_u *p) +{ + return (p[0] == '/' && (p[1] == '*' || p[1] == '/')); +} + +/* + * Recognize the start of a "//" comment. + */ + static int +cin_islinecomment(char_u *p) +{ + return (p[0] == '/' && p[1] == '/'); +} + +/* + * Check previous lines for a "//" line comment, skipping over blank lines. + */ + static pos_T * +find_line_comment(void) // XXX +{ + static pos_T pos; + char_u *line; + char_u *p; + + pos = curwin->w_cursor; + while (--pos.lnum > 0) + { + line = ml_get(pos.lnum); + p = skipwhite(line); + if (cin_islinecomment(p)) + { + pos.col = (int)(p - line); + return &pos; + } + if (*p != NUL) + break; + } + return NULL; +} + +/* + * Return TRUE if "text" starts with "key:". + */ + static int +cin_has_js_key(char_u *text) +{ + char_u *s = skipwhite(text); + int quote = -1; + + if (*s == '\'' || *s == '"') + { + // can be 'key': or "key": + quote = *s; + ++s; + } + if (!vim_isIDc(*s)) // need at least one ID character + return FALSE; + + while (vim_isIDc(*s)) + ++s; + if (*s == quote) + ++s; + + s = cin_skipcomment(s); + + // "::" is not a label, it's C++ + return (*s == ':' && s[1] != ':'); +} + +/* + * Check if string matches "label:"; move to character after ':' if true. + * "*s" must point to the start of the label, if there is one. + */ + static int +cin_islabel_skip(char_u **s) +{ + if (!vim_isIDc(**s)) // need at least one ID character + return FALSE; + + while (vim_isIDc(**s)) + (*s)++; + + *s = cin_skipcomment(*s); + + // "::" is not a label, it's C++ + return (**s == ':' && *++*s != ':'); +} + +/* + * Recognize a "public/private/protected" scope declaration label. + */ + static int +cin_isscopedecl(char_u *s) +{ + int i; + + s = cin_skipcomment(s); + if (STRNCMP(s, "public", 6) == 0) + i = 6; + else if (STRNCMP(s, "protected", 9) == 0) + i = 9; + else if (STRNCMP(s, "private", 7) == 0) + i = 7; + else + return FALSE; + return (*(s = cin_skipcomment(s + i)) == ':' && s[1] != ':'); +} + +/* + * Recognize a preprocessor statement: Any line that starts with '#'. + */ + static int +cin_ispreproc(char_u *s) +{ + if (*skipwhite(s) == '#') + return TRUE; + return FALSE; +} + +/* + * Return TRUE if line "*pp" at "*lnump" is a preprocessor statement or a + * continuation line of a preprocessor statement. Decrease "*lnump" to the + * start and return the line in "*pp". + * Put the amount of indent in "*amount". + */ + static int +cin_ispreproc_cont(char_u **pp, linenr_T *lnump, int *amount) +{ + char_u *line = *pp; + linenr_T lnum = *lnump; + int retval = FALSE; + int candidate_amount = *amount; + + if (*line != NUL && line[STRLEN(line) - 1] == '\\') + candidate_amount = get_indent_lnum(lnum); + + for (;;) + { + if (cin_ispreproc(line)) + { + retval = TRUE; + *lnump = lnum; + break; + } + if (lnum == 1) + break; + line = ml_get(--lnum); + if (*line == NUL || line[STRLEN(line) - 1] != '\\') + break; + } + + if (lnum != *lnump) + *pp = ml_get(*lnump); + if (retval) + *amount = candidate_amount; + return retval; +} + + static int +cin_iselse( + char_u *p) +{ + if (*p == '}') // accept "} else" + p = cin_skipcomment(p + 1); + return (STRNCMP(p, "else", 4) == 0 && !vim_isIDc(p[4])); +} + +/* + * Recognize a line that starts with '{' or '}', or ends with ';', ',', '{' or + * '}'. + * Don't consider "} else" a terminated line. + * If a line begins with an "else", only consider it terminated if no unmatched + * opening braces follow (handle "else { foo();" correctly). + * Return the character terminating the line (ending char's have precedence if + * both apply in order to determine initializations). + */ + static int +cin_isterminated( + char_u *s, + int incl_open, // include '{' at the end as terminator + int incl_comma) // recognize a trailing comma +{ + char_u found_start = 0; + unsigned n_open = 0; + int is_else = FALSE; + + s = cin_skipcomment(s); + + if (*s == '{' || (*s == '}' && !cin_iselse(s))) + found_start = *s; + + if (!found_start) + is_else = cin_iselse(s); + + while (*s) + { + // skip over comments, "" strings and 'c'haracters + s = skip_string(cin_skipcomment(s)); + if (*s == '}' && n_open > 0) + --n_open; + if ((!is_else || n_open == 0) + && (*s == ';' || *s == '}' || (incl_comma && *s == ',')) + && cin_nocode(s + 1)) + return *s; + else if (*s == '{') + { + if (incl_open && cin_nocode(s + 1)) + return *s; + else + ++n_open; + } + + if (*s) + s++; + } + return found_start; +} + +/* + * Return TRUE when "s" starts with "word" and then a non-ID character. + */ + static int +cin_starts_with(char_u *s, char *word) +{ + int l = (int)STRLEN(word); + + return (STRNCMP(s, word, l) == 0 && !vim_isIDc(s[l])); +} + +/* + * Recognize a "default" switch label. + */ + static int +cin_isdefault(char_u *s) +{ + return (STRNCMP(s, "default", 7) == 0 + && *(s = cin_skipcomment(s + 7)) == ':' + && s[1] != ':'); +} + +/* + * Recognize a switch label: "case .*:" or "default:". + */ + static int +cin_iscase( + char_u *s, + int strict) // Allow relaxed check of case statement for JS +{ + s = cin_skipcomment(s); + if (cin_starts_with(s, "case")) + { + for (s += 4; *s; ++s) + { + s = cin_skipcomment(s); + if (*s == ':') + { + if (s[1] == ':') // skip over "::" for C++ + ++s; + else + return TRUE; + } + if (*s == '\'' && s[1] && s[2] == '\'') + s += 2; // skip over ':' + else if (*s == '/' && (s[1] == '*' || s[1] == '/')) + return FALSE; // stop at comment + else if (*s == '"') + { + // JS etc. + if (strict) + return FALSE; // stop at string + else + return TRUE; + } + } + return FALSE; + } + + if (cin_isdefault(s)) + return TRUE; + return FALSE; +} + +/* + * Recognize a label: "label:". + * Note: curwin->w_cursor must be where we are looking for the label. + */ + static int +cin_islabel(void) // XXX +{ + char_u *s; + + s = cin_skipcomment(ml_get_curline()); + + // Exclude "default" from labels, since it should be indented + // like a switch label. Same for C++ scope declarations. + if (cin_isdefault(s)) + return FALSE; + if (cin_isscopedecl(s)) + return FALSE; + + if (cin_islabel_skip(&s)) + { + // Only accept a label if the previous line is terminated or is a case + // label. + pos_T cursor_save; + pos_T *trypos; + char_u *line; + + cursor_save = curwin->w_cursor; + while (curwin->w_cursor.lnum > 1) + { + --curwin->w_cursor.lnum; + + // If we're in a comment or raw string now, skip to the start of + // it. + curwin->w_cursor.col = 0; + if ((trypos = ind_find_start_CORS(NULL)) != NULL) // XXX + curwin->w_cursor = *trypos; + + line = ml_get_curline(); + if (cin_ispreproc(line)) // ignore #defines, #if, etc. + continue; + if (*(line = cin_skipcomment(line)) == NUL) + continue; + + curwin->w_cursor = cursor_save; + if (cin_isterminated(line, TRUE, FALSE) + || cin_isscopedecl(line) + || cin_iscase(line, TRUE) + || (cin_islabel_skip(&line) && cin_nocode(line))) + return TRUE; + return FALSE; + } + curwin->w_cursor = cursor_save; + return TRUE; // label at start of file??? + } + return FALSE; +} + +/* + * Return TRUE if string "s" ends with the string "find", possibly followed by + * white space and comments. Skip strings and comments. + * Ignore "ignore" after "find" if it's not NULL. + */ + static int +cin_ends_in(char_u *s, char_u *find, char_u *ignore) +{ + char_u *p = s; + char_u *r; + int len = (int)STRLEN(find); + + while (*p != NUL) + { + p = cin_skipcomment(p); + if (STRNCMP(p, find, len) == 0) + { + r = skipwhite(p + len); + if (ignore != NULL && STRNCMP(r, ignore, STRLEN(ignore)) == 0) + r = skipwhite(r + STRLEN(ignore)); + if (cin_nocode(r)) + return TRUE; + } + if (*p != NUL) + ++p; + } + return FALSE; +} + +/* + * Recognize structure initialization and enumerations: + * "[typedef] [static|public|protected|private] enum" + * "[typedef] [static|public|protected|private] = {" + */ + static int +cin_isinit(void) +{ + char_u *s; + static char *skip[] = {"static", "public", "protected", "private"}; + + s = cin_skipcomment(ml_get_curline()); + + if (cin_starts_with(s, "typedef")) + s = cin_skipcomment(s + 7); + + for (;;) + { + int i, l; + + for (i = 0; i < (int)(sizeof(skip) / sizeof(char *)); ++i) + { + l = (int)strlen(skip[i]); + if (cin_starts_with(s, skip[i])) + { + s = cin_skipcomment(s + l); + l = 0; + break; + } + } + if (l != 0) + break; + } + + if (cin_starts_with(s, "enum")) + return TRUE; + + if (cin_ends_in(s, (char_u *)"=", (char_u *)"{")) + return TRUE; + + return FALSE; +} + +// Maximum number of lines to search back for a "namespace" line. +#define FIND_NAMESPACE_LIM 20 + +/* + * Recognize a "namespace" scope declaration. + */ + static int +cin_is_cpp_namespace(char_u *s) +{ + char_u *p; + int has_name = FALSE; + int has_name_start = FALSE; + + s = cin_skipcomment(s); + if (STRNCMP(s, "namespace", 9) == 0 && (s[9] == NUL || !vim_iswordc(s[9]))) + { + p = cin_skipcomment(skipwhite(s + 9)); + while (*p != NUL) + { + if (VIM_ISWHITE(*p)) + { + has_name = TRUE; // found end of a name + p = cin_skipcomment(skipwhite(p)); + } + else if (*p == '{') + { + break; + } + else if (vim_iswordc(*p)) + { + has_name_start = TRUE; + if (has_name) + return FALSE; // word character after skipping past name + ++p; + } + else if (p[0] == ':' && p[1] == ':' && vim_iswordc(p[2])) + { + if (!has_name_start || has_name) + return FALSE; + // C++ 17 nested namespace + p += 3; + } + else + { + return FALSE; + } + } + return TRUE; + } + return FALSE; +} + +/* + * Recognize a `extern "C"` or `extern "C++"` linkage specifications. + */ + static int +cin_is_cpp_extern_c(char_u *s) +{ + char_u *p; + int has_string_literal = FALSE; + + s = cin_skipcomment(s); + if (STRNCMP(s, "extern", 6) == 0 && (s[6] == NUL || !vim_iswordc(s[6]))) + { + p = cin_skipcomment(skipwhite(s + 6)); + while (*p != NUL) + { + if (VIM_ISWHITE(*p)) + { + p = cin_skipcomment(skipwhite(p)); + } + else if (*p == '{') + { + break; + } + else if (p[0] == '"' && p[1] == 'C' && p[2] == '"') + { + if (has_string_literal) + return FALSE; + has_string_literal = TRUE; + p += 3; + } + else if (p[0] == '"' && p[1] == 'C' && p[2] == '+' && p[3] == '+' + && p[4] == '"') + { + if (has_string_literal) + return FALSE; + has_string_literal = TRUE; + p += 5; + } + else + { + return FALSE; + } + } + return has_string_literal ? TRUE : FALSE; + } + return FALSE; +} + +/* + * Return a pointer to the first non-empty non-comment character after a ':'. + * Return NULL if not found. + * case 234: a = b; + * ^ + */ + static char_u * +after_label(char_u *l) +{ + for ( ; *l; ++l) + { + if (*l == ':') + { + if (l[1] == ':') // skip over "::" for C++ + ++l; + else if (!cin_iscase(l + 1, FALSE)) + break; + } + else if (*l == '\'' && l[1] && l[2] == '\'') + l += 2; // skip over 'x' + } + if (*l == NUL) + return NULL; + l = cin_skipcomment(l + 1); + if (*l == NUL) + return NULL; + return l; +} + +/* + * Get indent of line "lnum", skipping a label. + * Return 0 if there is nothing after the label. + */ + static int +get_indent_nolabel (linenr_T lnum) // XXX +{ + char_u *l; + pos_T fp; + colnr_T col; + char_u *p; + + l = ml_get(lnum); + p = after_label(l); + if (p == NULL) + return 0; + + fp.col = (colnr_T)(p - l); + fp.lnum = lnum; + getvcol(curwin, &fp, &col, NULL, NULL); + return (int)col; +} + +/* + * Find indent for line "lnum", ignoring any case or jump label. + * Also return a pointer to the text (after the label) in "pp". + * label: if (asdf && asdfasdf) + * ^ + */ + static int +skip_label(linenr_T lnum, char_u **pp) +{ + char_u *l; + int amount; + pos_T cursor_save; + + cursor_save = curwin->w_cursor; + curwin->w_cursor.lnum = lnum; + l = ml_get_curline(); + // XXX + if (cin_iscase(l, FALSE) || cin_isscopedecl(l) || cin_islabel()) + { + amount = get_indent_nolabel(lnum); + l = after_label(ml_get_curline()); + if (l == NULL) // just in case + l = ml_get_curline(); + } + else + { + amount = get_indent(); + l = ml_get_curline(); + } + *pp = l; + + curwin->w_cursor = cursor_save; + return amount; +} + +/* + * Return the indent of the first variable name after a type in a declaration. + * int a, indent of "a" + * static struct foo b, indent of "b" + * enum bla c, indent of "c" + * Returns zero when it doesn't look like a declaration. + */ + static int +cin_first_id_amount(void) +{ + char_u *line, *p, *s; + int len; + pos_T fp; + colnr_T col; + + line = ml_get_curline(); + p = skipwhite(line); + len = (int)(skiptowhite(p) - p); + if (len == 6 && STRNCMP(p, "static", 6) == 0) + { + p = skipwhite(p + 6); + len = (int)(skiptowhite(p) - p); + } + if (len == 6 && STRNCMP(p, "struct", 6) == 0) + p = skipwhite(p + 6); + else if (len == 4 && STRNCMP(p, "enum", 4) == 0) + p = skipwhite(p + 4); + else if ((len == 8 && STRNCMP(p, "unsigned", 8) == 0) + || (len == 6 && STRNCMP(p, "signed", 6) == 0)) + { + s = skipwhite(p + len); + if ((STRNCMP(s, "int", 3) == 0 && VIM_ISWHITE(s[3])) + || (STRNCMP(s, "long", 4) == 0 && VIM_ISWHITE(s[4])) + || (STRNCMP(s, "short", 5) == 0 && VIM_ISWHITE(s[5])) + || (STRNCMP(s, "char", 4) == 0 && VIM_ISWHITE(s[4]))) + p = s; + } + for (len = 0; vim_isIDc(p[len]); ++len) + ; + if (len == 0 || !VIM_ISWHITE(p[len]) || cin_nocode(p)) + return 0; + + p = skipwhite(p + len); + fp.lnum = curwin->w_cursor.lnum; + fp.col = (colnr_T)(p - line); + getvcol(curwin, &fp, &col, NULL, NULL); + return (int)col; +} + +/* + * Return the indent of the first non-blank after an equal sign. + * char *foo = "here"; + * Return zero if no (useful) equal sign found. + * Return -1 if the line above "lnum" ends in a backslash. + * foo = "asdf\ + * asdf\ + * here"; + */ + static int +cin_get_equal_amount(linenr_T lnum) +{ + char_u *line; + char_u *s; + colnr_T col; + pos_T fp; + + if (lnum > 1) + { + line = ml_get(lnum - 1); + if (*line != NUL && line[STRLEN(line) - 1] == '\\') + return -1; + } + + line = s = ml_get(lnum); + while (*s != NUL && vim_strchr((char_u *)"=;{}\"'", *s) == NULL) + { + if (cin_iscomment(s)) // ignore comments + s = cin_skipcomment(s); + else + ++s; + } + if (*s != '=') + return 0; + + s = skipwhite(s + 1); + if (cin_nocode(s)) + return 0; + + if (*s == '"') // nice alignment for continued strings + ++s; + + fp.lnum = lnum; + fp.col = (colnr_T)(s - line); + getvcol(curwin, &fp, &col, NULL, NULL); + return (int)col; +} + +/* + * Skip strings, chars and comments until at or past "trypos". + * Return the column found. + */ + static int +cin_skip2pos(pos_T *trypos) +{ + char_u *line; + char_u *p; + char_u *new_p; + + p = line = ml_get(trypos->lnum); + while (*p && (colnr_T)(p - line) < trypos->col) + { + if (cin_iscomment(p)) + p = cin_skipcomment(p); + else + { + new_p = skip_string(p); + if (new_p == p) + ++p; + else + p = new_p; + } + } + return (int)(p - line); +} + + static pos_T * +find_match_char(int c, int ind_maxparen) // XXX +{ + pos_T cursor_save; + pos_T *trypos; + static pos_T pos_copy; + int ind_maxp_wk; + + cursor_save = curwin->w_cursor; + ind_maxp_wk = ind_maxparen; +retry: + if ((trypos = findmatchlimit(NULL, c, 0, ind_maxp_wk)) != NULL) + { + // check if the ( is in a // comment + if ((colnr_T)cin_skip2pos(trypos) > trypos->col) + { + ind_maxp_wk = ind_maxparen - (int)(cursor_save.lnum - trypos->lnum); + if (ind_maxp_wk > 0) + { + curwin->w_cursor = *trypos; + curwin->w_cursor.col = 0; // XXX + goto retry; + } + trypos = NULL; + } + else + { + pos_T *trypos_wk; + + pos_copy = *trypos; // copy trypos, findmatch will change it + trypos = &pos_copy; + curwin->w_cursor = *trypos; + if ((trypos_wk = ind_find_start_CORS(NULL)) != NULL) // XXX + { + ind_maxp_wk = ind_maxparen - (int)(cursor_save.lnum + - trypos_wk->lnum); + if (ind_maxp_wk > 0) + { + curwin->w_cursor = *trypos_wk; + goto retry; + } + trypos = NULL; + } + } + } + curwin->w_cursor = cursor_save; + return trypos; +} + +/* + * Find the matching '(', ignoring it if it is in a comment. + * Return NULL if no match found. + */ + static pos_T * +find_match_paren(int ind_maxparen) // XXX +{ + return find_match_char('(', ind_maxparen); +} + +/* + * Set w_cursor.col to the column number of the last unmatched ')' or '{' in + * line "l". "l" must point to the start of the line. + */ + static int +find_last_paren(char_u *l, int start, int end) +{ + int i; + int retval = FALSE; + int open_count = 0; + + curwin->w_cursor.col = 0; // default is start of line + + for (i = 0; l[i] != NUL; i++) + { + i = (int)(cin_skipcomment(l + i) - l); // ignore parens in comments + i = (int)(skip_string(l + i) - l); // ignore parens in quotes + if (l[i] == start) + ++open_count; + else if (l[i] == end) + { + if (open_count > 0) + --open_count; + else + { + curwin->w_cursor.col = i; + retval = TRUE; + } + } + } + return retval; +} + +/* + * Recognize the basic picture of a function declaration -- it needs to + * have an open paren somewhere and a close paren at the end of the line and + * no semicolons anywhere. + * When a line ends in a comma we continue looking in the next line. + * "sp" points to a string with the line. When looking at other lines it must + * be restored to the line. When it's NULL fetch lines here. + * "first_lnum" is where we start looking. + * "min_lnum" is the line before which we will not be looking. + */ + static int +cin_isfuncdecl( + char_u **sp, + linenr_T first_lnum, + linenr_T min_lnum) +{ + char_u *s; + linenr_T lnum = first_lnum; + linenr_T save_lnum = curwin->w_cursor.lnum; + int retval = FALSE; + pos_T *trypos; + int just_started = TRUE; + + if (sp == NULL) + s = ml_get(lnum); + else + s = *sp; + + curwin->w_cursor.lnum = lnum; + if (find_last_paren(s, '(', ')') + && (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) + { + lnum = trypos->lnum; + if (lnum < min_lnum) + { + curwin->w_cursor.lnum = save_lnum; + return FALSE; + } + + s = ml_get(lnum); + } + curwin->w_cursor.lnum = save_lnum; + + // Ignore line starting with #. + if (cin_ispreproc(s)) + return FALSE; + + while (*s && *s != '(' && *s != ';' && *s != '\'' && *s != '"') + { + if (cin_iscomment(s)) // ignore comments + s = cin_skipcomment(s); + else if (*s == ':') + { + if (*(s + 1) == ':') + s += 2; + else + // To avoid a mistake in the following situation: + // A::A(int a, int b) + // : a(0) // <--not a function decl + // , b(0) + // {... + return FALSE; + } + else + ++s; + } + if (*s != '(') + return FALSE; // ';', ' or " before any () or no '(' + + while (*s && *s != ';' && *s != '\'' && *s != '"') + { + if (*s == ')' && cin_nocode(s + 1)) + { + // ')' at the end: may have found a match + // Check for he previous line not to end in a backslash: + // #if defined(x) && {backslash} + // defined(y) + lnum = first_lnum - 1; + s = ml_get(lnum); + if (*s == NUL || s[STRLEN(s) - 1] != '\\') + retval = TRUE; + goto done; + } + if ((*s == ',' && cin_nocode(s + 1)) || s[1] == NUL || cin_nocode(s)) + { + int comma = (*s == ','); + + // ',' at the end: continue looking in the next line. + // At the end: check for ',' in the next line, for this style: + // func(arg1 + // , arg2) + for (;;) + { + if (lnum >= curbuf->b_ml.ml_line_count) + break; + s = ml_get(++lnum); + if (!cin_ispreproc(s)) + break; + } + if (lnum >= curbuf->b_ml.ml_line_count) + break; + // Require a comma at end of the line or a comma or ')' at the + // start of next line. + s = skipwhite(s); + if (!just_started && (!comma && *s != ',' && *s != ')')) + break; + just_started = FALSE; + } + else if (cin_iscomment(s)) // ignore comments + s = cin_skipcomment(s); + else + { + ++s; + just_started = FALSE; + } + } + +done: + if (lnum != first_lnum && sp != NULL) + *sp = ml_get(first_lnum); + + return retval; +} + + static int +cin_isif(char_u *p) +{ + return (STRNCMP(p, "if", 2) == 0 && !vim_isIDc(p[2])); +} + + static int +cin_isdo(char_u *p) +{ + return (STRNCMP(p, "do", 2) == 0 && !vim_isIDc(p[2])); +} + +/* + * Check if this is a "while" that should have a matching "do". + * We only accept a "while (condition) ;", with only white space between the + * ')' and ';'. The condition may be spread over several lines. + */ + static int +cin_iswhileofdo (char_u *p, linenr_T lnum) // XXX +{ + pos_T cursor_save; + pos_T *trypos; + int retval = FALSE; + + p = cin_skipcomment(p); + if (*p == '}') // accept "} while (cond);" + p = cin_skipcomment(p + 1); + if (cin_starts_with(p, "while")) + { + cursor_save = curwin->w_cursor; + curwin->w_cursor.lnum = lnum; + curwin->w_cursor.col = 0; + p = ml_get_curline(); + while (*p && *p != 'w') // skip any '}', until the 'w' of the "while" + { + ++p; + ++curwin->w_cursor.col; + } + if ((trypos = findmatchlimit(NULL, 0, 0, + curbuf->b_ind_maxparen)) != NULL + && *cin_skipcomment(ml_get_pos(trypos) + 1) == ';') + retval = TRUE; + curwin->w_cursor = cursor_save; + } + return retval; +} + +/* + * Check whether in "p" there is an "if", "for" or "while" before "*poffset". + * Return 0 if there is none. + * Otherwise return !0 and update "*poffset" to point to the place where the + * string was found. + */ + static int +cin_is_if_for_while_before_offset(char_u *line, int *poffset) +{ + int offset = *poffset; + + if (offset-- < 2) + return 0; + while (offset > 2 && VIM_ISWHITE(line[offset])) + --offset; + + offset -= 1; + if (!STRNCMP(line + offset, "if", 2)) + goto probablyFound; + + if (offset >= 1) + { + offset -= 1; + if (!STRNCMP(line + offset, "for", 3)) + goto probablyFound; + + if (offset >= 2) + { + offset -= 2; + if (!STRNCMP(line + offset, "while", 5)) + goto probablyFound; + } + } + return 0; + +probablyFound: + if (!offset || !vim_isIDc(line[offset - 1])) + { + *poffset = offset; + return 1; + } + return 0; +} + +/* + * Return TRUE if we are at the end of a do-while. + * do + * nothing; + * while (foo + * && bar); <-- here + * Adjust the cursor to the line with "while". + */ + static int +cin_iswhileofdo_end(int terminated) +{ + char_u *line; + char_u *p; + char_u *s; + pos_T *trypos; + int i; + + if (terminated != ';') // there must be a ';' at the end + return FALSE; + + p = line = ml_get_curline(); + while (*p != NUL) + { + p = cin_skipcomment(p); + if (*p == ')') + { + s = skipwhite(p + 1); + if (*s == ';' && cin_nocode(s + 1)) + { + // Found ");" at end of the line, now check there is "while" + // before the matching '('. XXX + i = (int)(p - line); + curwin->w_cursor.col = i; + trypos = find_match_paren(curbuf->b_ind_maxparen); + if (trypos != NULL) + { + s = cin_skipcomment(ml_get(trypos->lnum)); + if (*s == '}') // accept "} while (cond);" + s = cin_skipcomment(s + 1); + if (cin_starts_with(s, "while")) + { + curwin->w_cursor.lnum = trypos->lnum; + return TRUE; + } + } + + // Searching may have made "line" invalid, get it again. + line = ml_get_curline(); + p = line + i; + } + } + if (*p != NUL) + ++p; + } + return FALSE; +} + + static int +cin_isbreak(char_u *p) +{ + return (STRNCMP(p, "break", 5) == 0 && !vim_isIDc(p[5])); +} + +/* + * Find the position of a C++ base-class declaration or + * constructor-initialization. eg: + * + * class MyClass : + * baseClass <-- here + * class MyClass : public baseClass, + * anotherBaseClass <-- here (should probably lineup ??) + * MyClass::MyClass(...) : + * baseClass(...) <-- here (constructor-initialization) + * + * This is a lot of guessing. Watch out for "cond ? func() : foo". + */ + static int +cin_is_cpp_baseclass( + cpp_baseclass_cache_T *cached) // input and output +{ + lpos_T *pos = &cached->lpos; // find position + char_u *s; + int class_or_struct, lookfor_ctor_init, cpp_base_class; + linenr_T lnum = curwin->w_cursor.lnum; + char_u *line = ml_get_curline(); + + if (pos->lnum <= lnum) + return cached->found; // Use the cached result + + pos->col = 0; + + s = skipwhite(line); + if (*s == '#') // skip #define FOO x ? (x) : x + return FALSE; + s = cin_skipcomment(s); + if (*s == NUL) + return FALSE; + + cpp_base_class = lookfor_ctor_init = class_or_struct = FALSE; + + // Search for a line starting with '#', empty, ending in ';' or containing + // '{' or '}' and start below it. This handles the following situations: + // a = cond ? + // func() : + // asdf; + // func::foo() + // : something + // {} + // Foo::Foo (int one, int two) + // : something(4), + // somethingelse(3) + // {} + while (lnum > 1) + { + line = ml_get(lnum - 1); + s = skipwhite(line); + if (*s == '#' || *s == NUL) + break; + while (*s != NUL) + { + s = cin_skipcomment(s); + if (*s == '{' || *s == '}' + || (*s == ';' && cin_nocode(s + 1))) + break; + if (*s != NUL) + ++s; + } + if (*s != NUL) + break; + --lnum; + } + + pos->lnum = lnum; + line = ml_get(lnum); + s = line; + for (;;) + { + if (*s == NUL) + { + if (lnum == curwin->w_cursor.lnum) + break; + // Continue in the cursor line. + line = ml_get(++lnum); + s = line; + } + if (s == line) + { + // don't recognize "case (foo):" as a baseclass + if (cin_iscase(s, FALSE)) + break; + s = cin_skipcomment(line); + if (*s == NUL) + continue; + } + + if (s[0] == '"' || (s[0] == 'R' && s[1] == '"')) + s = skip_string(s) + 1; + else if (s[0] == ':') + { + if (s[1] == ':') + { + // skip double colon. It can't be a constructor + // initialization any more + lookfor_ctor_init = FALSE; + s = cin_skipcomment(s + 2); + } + else if (lookfor_ctor_init || class_or_struct) + { + // we have something found, that looks like the start of + // cpp-base-class-declaration or constructor-initialization + cpp_base_class = TRUE; + lookfor_ctor_init = class_or_struct = FALSE; + pos->col = 0; + s = cin_skipcomment(s + 1); + } + else + s = cin_skipcomment(s + 1); + } + else if ((STRNCMP(s, "class", 5) == 0 && !vim_isIDc(s[5])) + || (STRNCMP(s, "struct", 6) == 0 && !vim_isIDc(s[6]))) + { + class_or_struct = TRUE; + lookfor_ctor_init = FALSE; + + if (*s == 'c') + s = cin_skipcomment(s + 5); + else + s = cin_skipcomment(s + 6); + } + else + { + if (s[0] == '{' || s[0] == '}' || s[0] == ';') + { + cpp_base_class = lookfor_ctor_init = class_or_struct = FALSE; + } + else if (s[0] == ')') + { + // Constructor-initialization is assumed if we come across + // something like "):" + class_or_struct = FALSE; + lookfor_ctor_init = TRUE; + } + else if (s[0] == '?') + { + // Avoid seeing '() :' after '?' as constructor init. + return FALSE; + } + else if (!vim_isIDc(s[0])) + { + // if it is not an identifier, we are wrong + class_or_struct = FALSE; + lookfor_ctor_init = FALSE; + } + else if (pos->col == 0) + { + // it can't be a constructor-initialization any more + lookfor_ctor_init = FALSE; + + // the first statement starts here: lineup with this one... + if (cpp_base_class) + pos->col = (colnr_T)(s - line); + } + + // When the line ends in a comma don't align with it. + if (lnum == curwin->w_cursor.lnum && *s == ',' && cin_nocode(s + 1)) + pos->col = 0; + + s = cin_skipcomment(s + 1); + } + } + + cached->found = cpp_base_class; + if (cpp_base_class) + pos->lnum = lnum; + return cpp_base_class; +} + + static int +get_baseclass_amount(int col) +{ + int amount; + colnr_T vcol; + pos_T *trypos; + + if (col == 0) + { + amount = get_indent(); + if (find_last_paren(ml_get_curline(), '(', ')') + && (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) + amount = get_indent_lnum(trypos->lnum); // XXX + if (!cin_ends_in(ml_get_curline(), (char_u *)",", NULL)) + amount += curbuf->b_ind_cpp_baseclass; + } + else + { + curwin->w_cursor.col = col; + getvcol(curwin, &curwin->w_cursor, &vcol, NULL, NULL); + amount = (int)vcol; + } + if (amount < curbuf->b_ind_cpp_baseclass) + amount = curbuf->b_ind_cpp_baseclass; + return amount; +} + +/* + * Find the '{' at the start of the block we are in. + * Return NULL if no match found. + * Ignore a '{' that is in a comment, makes indenting the next three lines + * work. + */ +/* foo() */ +/* { */ +/* } */ + + static pos_T * +find_start_brace(void) // XXX +{ + pos_T cursor_save; + pos_T *trypos; + pos_T *pos; + static pos_T pos_copy; + + cursor_save = curwin->w_cursor; + while ((trypos = findmatchlimit(NULL, '{', FM_BLOCKSTOP, 0)) != NULL) + { + pos_copy = *trypos; // copy pos_T, next findmatch will change it + trypos = &pos_copy; + curwin->w_cursor = *trypos; + pos = NULL; + // ignore the { if it's in a // or / * * / comment + if ((colnr_T)cin_skip2pos(trypos) == trypos->col + && (pos = ind_find_start_CORS(NULL)) == NULL) // XXX + break; + if (pos != NULL) + curwin->w_cursor.lnum = pos->lnum; + } + curwin->w_cursor = cursor_save; + return trypos; +} + +/* + * Find the matching '(', ignoring it if it is in a comment or before an + * unmatched {. + * Return NULL if no match found. + */ + static pos_T * +find_match_paren_after_brace (int ind_maxparen) // XXX +{ + pos_T *trypos = find_match_paren(ind_maxparen); + + if (trypos != NULL) + { + pos_T *tryposBrace = find_start_brace(); + + // If both an unmatched '(' and '{' is found. Ignore the '(' + // position if the '{' is further down. + if (tryposBrace != NULL + && (trypos->lnum != tryposBrace->lnum + ? trypos->lnum < tryposBrace->lnum + : trypos->col < tryposBrace->col)) + trypos = NULL; + } + return trypos; +} + +/* + * Return ind_maxparen corrected for the difference in line number between the + * cursor position and "startpos". This makes sure that searching for a + * matching paren above the cursor line doesn't find a match because of + * looking a few lines further. + */ + static int +corr_ind_maxparen(pos_T *startpos) +{ + long n = (long)startpos->lnum - (long)curwin->w_cursor.lnum; + + if (n > 0 && n < curbuf->b_ind_maxparen / 2) + return curbuf->b_ind_maxparen - (int)n; + return curbuf->b_ind_maxparen; +} + +/* + * Parse 'cinoptions' and set the values in "curbuf". + * Must be called when 'cinoptions', 'shiftwidth' and/or 'tabstop' changes. + */ + void +parse_cino(buf_T *buf) +{ + char_u *p; + char_u *l; + char_u *digits; + int n; + int divider; + int fraction = 0; + int sw = (int)get_sw_value(buf); + + // Set the default values. + + // Spaces from a block's opening brace the prevailing indent for that + // block should be. + buf->b_ind_level = sw; + + // Spaces from the edge of the line an open brace that's at the end of a + // line is imagined to be. + buf->b_ind_open_imag = 0; + + // Spaces from the prevailing indent for a line that is not preceded by + // an opening brace. + buf->b_ind_no_brace = 0; + + // Column where the first { of a function should be located }. + buf->b_ind_first_open = 0; + + // Spaces from the prevailing indent a leftmost open brace should be + // located. + buf->b_ind_open_extra = 0; + + // Spaces from the matching open brace (real location for one at the left + // edge; imaginary location from one that ends a line) the matching close + // brace should be located. + buf->b_ind_close_extra = 0; + + // Spaces from the edge of the line an open brace sitting in the leftmost + // column is imagined to be. + buf->b_ind_open_left_imag = 0; + + // Spaces jump labels should be shifted to the left if N is non-negative, + // otherwise the jump label will be put to column 1. + buf->b_ind_jump_label = -1; + + // Spaces from the switch() indent a "case xx" label should be located. + buf->b_ind_case = sw; + + // Spaces from the "case xx:" code after a switch() should be located. + buf->b_ind_case_code = sw; + + // Lineup break at end of case in switch() with case label. + buf->b_ind_case_break = 0; + + // Spaces from the class declaration indent a scope declaration label + // should be located. + buf->b_ind_scopedecl = sw; + + // Spaces from the scope declaration label code should be located. + buf->b_ind_scopedecl_code = sw; + + // Amount K&R-style parameters should be indented. + buf->b_ind_param = sw; + + // Amount a function type spec should be indented. + buf->b_ind_func_type = sw; + + // Amount a cpp base class declaration or constructor initialization + // should be indented. + buf->b_ind_cpp_baseclass = sw; + + // additional spaces beyond the prevailing indent a continuation line + // should be located. + buf->b_ind_continuation = sw; + + // Spaces from the indent of the line with an unclosed parentheses. + buf->b_ind_unclosed = sw * 2; + + // Spaces from the indent of the line with an unclosed parentheses, which + // itself is also unclosed. + buf->b_ind_unclosed2 = sw; + + // Suppress ignoring spaces from the indent of a line starting with an + // unclosed parentheses. + buf->b_ind_unclosed_noignore = 0; + + // If the opening paren is the last nonwhite character on the line, and + // b_ind_unclosed_wrapped is nonzero, use this indent relative to the outer + // context (for very long lines). + buf->b_ind_unclosed_wrapped = 0; + + // Suppress ignoring white space when lining up with the character after + // an unclosed parentheses. + buf->b_ind_unclosed_whiteok = 0; + + // Indent a closing parentheses under the line start of the matching + // opening parentheses. + buf->b_ind_matching_paren = 0; + + // Indent a closing parentheses under the previous line. + buf->b_ind_paren_prev = 0; + + // Extra indent for comments. + buf->b_ind_comment = 0; + + // Spaces from the comment opener when there is nothing after it. + buf->b_ind_in_comment = 3; + + // Boolean: if non-zero, use b_ind_in_comment even if there is something + // after the comment opener. + buf->b_ind_in_comment2 = 0; + + // Max lines to search for an open paren. + buf->b_ind_maxparen = 20; + + // Max lines to search for an open comment. + buf->b_ind_maxcomment = 70; + + // Handle braces for java code. + buf->b_ind_java = 0; + + // Not to confuse JS object properties with labels. + buf->b_ind_js = 0; + + // Handle blocked cases correctly. + buf->b_ind_keep_case_label = 0; + + // Handle C++ namespace. + buf->b_ind_cpp_namespace = 0; + + // Handle continuation lines containing conditions of if(), for() and + // while(). + buf->b_ind_if_for_while = 0; + + // indentation for # comments + buf->b_ind_hash_comment = 0; + + // Handle C++ extern "C" or "C++" + buf->b_ind_cpp_extern_c = 0; + + for (p = buf->b_p_cino; *p; ) + { + l = p++; + if (*p == '-') + ++p; + digits = p; // remember where the digits start + n = getdigits(&p); + divider = 0; + if (*p == '.') // ".5s" means a fraction + { + fraction = atol((char *)++p); + while (VIM_ISDIGIT(*p)) + { + ++p; + if (divider) + divider *= 10; + else + divider = 10; + } + } + if (*p == 's') // "2s" means two times 'shiftwidth' + { + if (p == digits) + n = sw; // just "s" is one 'shiftwidth' + else + { + n *= sw; + if (divider) + n += (sw * fraction + divider / 2) / divider; + } + ++p; + } + if (l[1] == '-') + n = -n; + + // When adding an entry here, also update the default 'cinoptions' in + // doc/indent.txt, and add explanation for it! + switch (*l) + { + case '>': buf->b_ind_level = n; break; + case 'e': buf->b_ind_open_imag = n; break; + case 'n': buf->b_ind_no_brace = n; break; + case 'f': buf->b_ind_first_open = n; break; + case '{': buf->b_ind_open_extra = n; break; + case '}': buf->b_ind_close_extra = n; break; + case '^': buf->b_ind_open_left_imag = n; break; + case 'L': buf->b_ind_jump_label = n; break; + case ':': buf->b_ind_case = n; break; + case '=': buf->b_ind_case_code = n; break; + case 'b': buf->b_ind_case_break = n; break; + case 'p': buf->b_ind_param = n; break; + case 't': buf->b_ind_func_type = n; break; + case '/': buf->b_ind_comment = n; break; + case 'c': buf->b_ind_in_comment = n; break; + case 'C': buf->b_ind_in_comment2 = n; break; + case 'i': buf->b_ind_cpp_baseclass = n; break; + case '+': buf->b_ind_continuation = n; break; + case '(': buf->b_ind_unclosed = n; break; + case 'u': buf->b_ind_unclosed2 = n; break; + case 'U': buf->b_ind_unclosed_noignore = n; break; + case 'W': buf->b_ind_unclosed_wrapped = n; break; + case 'w': buf->b_ind_unclosed_whiteok = n; break; + case 'm': buf->b_ind_matching_paren = n; break; + case 'M': buf->b_ind_paren_prev = n; break; + case ')': buf->b_ind_maxparen = n; break; + case '*': buf->b_ind_maxcomment = n; break; + case 'g': buf->b_ind_scopedecl = n; break; + case 'h': buf->b_ind_scopedecl_code = n; break; + case 'j': buf->b_ind_java = n; break; + case 'J': buf->b_ind_js = n; break; + case 'l': buf->b_ind_keep_case_label = n; break; + case '#': buf->b_ind_hash_comment = n; break; + case 'N': buf->b_ind_cpp_namespace = n; break; + case 'k': buf->b_ind_if_for_while = n; break; + case 'E': buf->b_ind_cpp_extern_c = n; break; + } + if (*p == ',') + ++p; + } +} + + static int +find_match(int lookfor, linenr_T ourscope) +{ + char_u *look; + pos_T *theirscope; + char_u *mightbeif; + int elselevel; + int whilelevel; + + if (lookfor == LOOKFOR_IF) + { + elselevel = 1; + whilelevel = 0; + } + else + { + elselevel = 0; + whilelevel = 1; + } + + curwin->w_cursor.col = 0; + + while (curwin->w_cursor.lnum > ourscope + 1) + { + curwin->w_cursor.lnum--; + curwin->w_cursor.col = 0; + + look = cin_skipcomment(ml_get_curline()); + if (cin_iselse(look) + || cin_isif(look) + || cin_isdo(look) // XXX + || cin_iswhileofdo(look, curwin->w_cursor.lnum)) + { + // if we've gone outside the braces entirely, + // we must be out of scope... + theirscope = find_start_brace(); // XXX + if (theirscope == NULL) + break; + + // and if the brace enclosing this is further + // back than the one enclosing the else, we're + // out of luck too. + if (theirscope->lnum < ourscope) + break; + + // and if they're enclosed in a *deeper* brace, + // then we can ignore it because it's in a + // different scope... + if (theirscope->lnum > ourscope) + continue; + + // if it was an "else" (that's not an "else if") + // then we need to go back to another if, so + // increment elselevel + look = cin_skipcomment(ml_get_curline()); + if (cin_iselse(look)) + { + mightbeif = cin_skipcomment(look + 4); + if (!cin_isif(mightbeif)) + ++elselevel; + continue; + } + + // if it was a "while" then we need to go back to + // another "do", so increment whilelevel. XXX + if (cin_iswhileofdo(look, curwin->w_cursor.lnum)) + { + ++whilelevel; + continue; + } + + // If it's an "if" decrement elselevel + look = cin_skipcomment(ml_get_curline()); + if (cin_isif(look)) + { + elselevel--; + // When looking for an "if" ignore "while"s that + // get in the way. + if (elselevel == 0 && lookfor == LOOKFOR_IF) + whilelevel = 0; + } + + // If it's a "do" decrement whilelevel + if (cin_isdo(look)) + whilelevel--; + + // if we've used up all the elses, then + // this must be the if that we want! + // match the indent level of that if. + if (elselevel <= 0 && whilelevel <= 0) + return OK; + } + } + return FAIL; +} + +/* + * Return the desired indent for C code. + * Return -1 if the indent should be left alone (inside a raw string). + */ + int +get_c_indent(void) +{ + pos_T cur_curpos; + int amount; + int scope_amount; + int cur_amount = MAXCOL; + colnr_T col; + char_u *theline; + char_u *linecopy; + pos_T *trypos; + pos_T *comment_pos; + pos_T *tryposBrace = NULL; + pos_T tryposCopy; + pos_T our_paren_pos; + char_u *start; + int start_brace; +#define BRACE_IN_COL0 1 // '{' is in column 0 +#define BRACE_AT_START 2 // '{' is at start of line +#define BRACE_AT_END 3 // '{' is at end of line + linenr_T ourscope; + char_u *l; + char_u *look; + char_u terminated; + int lookfor; + int whilelevel; + linenr_T lnum; + int n; + int iscase; + int lookfor_break; + int lookfor_cpp_namespace = FALSE; + int cont_amount = 0; // amount for continuation line + int original_line_islabel; + int added_to_amount = 0; + int js_cur_has_key = 0; + linenr_T raw_string_start = 0; + cpp_baseclass_cache_T cache_cpp_baseclass = { FALSE, { MAXLNUM, 0 } }; + + // make a copy, value is changed below + int ind_continuation = curbuf->b_ind_continuation; + + // remember where the cursor was when we started + cur_curpos = curwin->w_cursor; + + // if we are at line 1 zero indent is fine, right? + if (cur_curpos.lnum == 1) + return 0; + + // Get a copy of the current contents of the line. + // This is required, because only the most recent line obtained with + // ml_get is valid! + linecopy = vim_strsave(ml_get(cur_curpos.lnum)); + if (linecopy == NULL) + return 0; + + // In insert mode and the cursor is on a ')' truncate the line at the + // cursor position. We don't want to line up with the matching '(' when + // inserting new stuff. + // For unknown reasons the cursor might be past the end of the line, thus + // check for that. + if ((State & INSERT) + && curwin->w_cursor.col < (colnr_T)STRLEN(linecopy) + && linecopy[curwin->w_cursor.col] == ')') + linecopy[curwin->w_cursor.col] = NUL; + + theline = skipwhite(linecopy); + + // move the cursor to the start of the line + + curwin->w_cursor.col = 0; + + original_line_islabel = cin_islabel(); // XXX + + // If we are inside a raw string don't change the indent. + // Ignore a raw string inside a comment. + comment_pos = ind_find_start_comment(); + if (comment_pos != NULL) + { + // findmatchlimit() static pos is overwritten, make a copy + tryposCopy = *comment_pos; + comment_pos = &tryposCopy; + } + trypos = find_start_rawstring(curbuf->b_ind_maxcomment); + if (trypos != NULL && (comment_pos == NULL + || LT_POS(*trypos, *comment_pos))) + { + amount = -1; + goto laterend; + } + + // #defines and so on always go at the left when included in 'cinkeys'. + if (*theline == '#' && (*linecopy == '#' || in_cinkeys('#', ' ', TRUE))) + { + amount = curbuf->b_ind_hash_comment; + goto theend; + } + + // Is it a non-case label? Then that goes at the left margin too unless: + // - JS flag is set. + // - 'L' item has a positive value. + if (original_line_islabel && !curbuf->b_ind_js + && curbuf->b_ind_jump_label < 0) + { + amount = 0; + goto theend; + } + + // If we're inside a "//" comment and there is a "//" comment in a + // previous line, lineup with that one. + if (cin_islinecomment(theline) + && (trypos = find_line_comment()) != NULL) // XXX + { + // find how indented the line beginning the comment is + getvcol(curwin, trypos, &col, NULL, NULL); + amount = col; + goto theend; + } + + // If we're inside a comment and not looking at the start of the + // comment, try using the 'comments' option. + if (!cin_iscomment(theline) && comment_pos != NULL) // XXX + { + int lead_start_len = 2; + int lead_middle_len = 1; + char_u lead_start[COM_MAX_LEN]; // start-comment string + char_u lead_middle[COM_MAX_LEN]; // middle-comment string + char_u lead_end[COM_MAX_LEN]; // end-comment string + char_u *p; + int start_align = 0; + int start_off = 0; + int done = FALSE; + + // find how indented the line beginning the comment is + getvcol(curwin, comment_pos, &col, NULL, NULL); + amount = col; + *lead_start = NUL; + *lead_middle = NUL; + + p = curbuf->b_p_com; + while (*p != NUL) + { + int align = 0; + int off = 0; + int what = 0; + + while (*p != NUL && *p != ':') + { + if (*p == COM_START || *p == COM_END || *p == COM_MIDDLE) + what = *p++; + else if (*p == COM_LEFT || *p == COM_RIGHT) + align = *p++; + else if (VIM_ISDIGIT(*p) || *p == '-') + off = getdigits(&p); + else + ++p; + } + + if (*p == ':') + ++p; + (void)copy_option_part(&p, lead_end, COM_MAX_LEN, ","); + if (what == COM_START) + { + STRCPY(lead_start, lead_end); + lead_start_len = (int)STRLEN(lead_start); + start_off = off; + start_align = align; + } + else if (what == COM_MIDDLE) + { + STRCPY(lead_middle, lead_end); + lead_middle_len = (int)STRLEN(lead_middle); + } + else if (what == COM_END) + { + // If our line starts with the middle comment string, line it + // up with the comment opener per the 'comments' option. + if (STRNCMP(theline, lead_middle, lead_middle_len) == 0 + && STRNCMP(theline, lead_end, STRLEN(lead_end)) != 0) + { + done = TRUE; + if (curwin->w_cursor.lnum > 1) + { + // If the start comment string matches in the previous + // line, use the indent of that line plus offset. If + // the middle comment string matches in the previous + // line, use the indent of that line. XXX + look = skipwhite(ml_get(curwin->w_cursor.lnum - 1)); + if (STRNCMP(look, lead_start, lead_start_len) == 0) + amount = get_indent_lnum(curwin->w_cursor.lnum - 1); + else if (STRNCMP(look, lead_middle, + lead_middle_len) == 0) + { + amount = get_indent_lnum(curwin->w_cursor.lnum - 1); + break; + } + // If the start comment string doesn't match with the + // start of the comment, skip this entry. XXX + else if (STRNCMP(ml_get(comment_pos->lnum) + comment_pos->col, + lead_start, lead_start_len) != 0) + continue; + } + if (start