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Diffstat (limited to 'src/indent.c')
| -rw-r--r-- | src/indent.c | 4460 |
1 files changed, 4460 insertions, 0 deletions
diff --git a/src/indent.c b/src/indent.c new file mode 100644 index 0000000..1ffa766 --- /dev/null +++ b/src/indent.c @@ -0,0 +1,4460 @@ +/* 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. + */ + +/* + * indent.c: Indentation related functions + */ + +#include "vim.h" + +#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((unsigned)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) + +static char_u *skip_string(char_u *p); +static pos_T *find_start_rawstring(int ind_maxcomment); + +/* + * 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 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; +} + +/* + * 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; +} + +/* + * 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; +} +#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; + +/* + * Functions for C-indenting. + * Most of this originally comes from Eric Fischer. + */ +/* + * Below "XXX" means that this function may unlock the current line. + */ + +static int cin_isdefault(char_u *); +static int cin_ispreproc(char_u *); +static int cin_iscomment(char_u *); +static int cin_islinecomment(char_u *); +static int cin_isterminated(char_u *, int, int); +static int cin_iselse(char_u *); +static int cin_ends_in(char_u *, char_u *, char_u *); +static int cin_starts_with(char_u *s, char *word); +static pos_T *find_match_paren(int); +static pos_T *find_match_char(int c, int ind_maxparen); +static int find_last_paren(char_u *l, int start, int end); +static int find_match(int lookfor, linenr_T ourscope); + +/* + * 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; +} + +/* + * 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 label: "label:". + * Note: curwin->w_cursor must be where we are looking for the label. + */ + 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; +} + +/* + * 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; +} + +/* + * Recognize a switch label: "case .*:" or "default:". + */ + 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 "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 "public/private/protected" scope declaration label. + */ + 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] != ':'); +} + +// 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; +} + +/* + * 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; +} + +/* + * 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] == '/'); +} + +/* + * 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; +} + +/* + * 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) && \ + * 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_iselse( + char_u *p) +{ + if (*p == '}') // accept "} else" + p = cin_skipcomment(p + 1); + return (STRNCMP(p, "else", 4) == 0 && !vim_isIDc(p[4])); +} + + 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; +} + +/* + * 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; +} + +/* + * 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])); +} + +/* + * 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); +} + +/* + * 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. + * Return NULL if no match found. + */ + static pos_T * +find_match_paren(int ind_maxparen) // XXX +{ + return find_match_char('(', ind_maxparen); +} + + 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 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; +} + +/* + * 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; +} + +/* + * 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; + } +} + +/* + * 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; +#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 + + 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_off != 0) + amount += start_off; + else if (start_align == COM_RIGHT) + amount += vim_strsize(lead_start) + - vim_strsize(lead_middle); + break; + } + + // If our line starts with the end comment string, line it up + // with the middle comment + if (STRNCMP(theline, lead_middle, lead_middle_len) != 0 + && STRNCMP(theline, lead_end, STRLEN(lead_end)) == 0) + { + amount = get_indent_lnum(curwin->w_cursor.lnum - 1); + // XXX + if (off != 0) + amount += off; + else if (align == COM_RIGHT) + amount += vim_strsize(lead_start) + - vim_strsize(lead_middle); + done = TRUE; + break; + } + } + } + + // If our line starts with an asterisk, line up with the + // asterisk in the comment opener; otherwise, line up + // with the first character of the comment text. + if (done) + ; + else if (theline[0] == '*') + amount += 1; + else + { + // If we are more than one line away from the comment opener, take + // the indent of the previous non-empty line. If 'cino' has "CO" + // and we are just below the comment opener and there are any + // white characters after it line up with the text after it; + // otherwise, add the amount specified by "c" in 'cino' + amount = -1; + for (lnum = cur_curpos.lnum - 1; lnum > comment_pos->lnum; --lnum) + { + if (linewhite(lnum)) // skip blank lines + continue; + amount = get_indent_lnum(lnum); // XXX + break; + } + if (amount == -1) // use the comment opener + { + if (!curbuf->b_ind_in_comment2) + { + start = ml_get(comment_pos->lnum); + look = start + comment_pos->col + 2; // skip / and * + if (*look != NUL) // if something after it + comment_pos->col = (colnr_T)(skipwhite(look) - start); + } + getvcol(curwin, comment_pos, &col, NULL, NULL); + amount = col; + if (curbuf->b_ind_in_comment2 || *look == NUL) + amount += curbuf->b_ind_in_comment; + } + } + goto theend; + } + + // Are we looking at a ']' that has a match? + if (*skipwhite(theline) == ']' + && (trypos = find_match_char('[', curbuf->b_ind_maxparen)) != NULL) + { + // align with the line containing the '['. + amount = get_indent_lnum(trypos->lnum); + goto theend; + } + + // Are we inside parentheses or braces? XXX + if (((trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL + && curbuf->b_ind_java == 0) + || (tryposBrace = find_start_brace()) != NULL + || trypos != NULL) + { + if (trypos != NULL && tryposBrace != NULL) + { + // Both an unmatched '(' and '{' is found. Use the one which is + // closer to the current cursor position, set the other to NULL. + if (trypos->lnum != tryposBrace->lnum + ? trypos->lnum < tryposBrace->lnum + : trypos->col < tryposBrace->col) + trypos = NULL; + else + tryposBrace = NULL; + } + + if (trypos != NULL) + { + // If the matching paren is more than one line away, use the indent of + // a previous non-empty line that matches the same paren. + if (theline[0] == ')' && curbuf->b_ind_paren_prev) + { + // Line up with the start of the matching paren line. + amount = get_indent_lnum(curwin->w_cursor.lnum - 1); // XXX + } + else + { + amount = -1; + our_paren_pos = *trypos; + for (lnum = cur_curpos.lnum - 1; lnum > our_paren_pos.lnum; --lnum) + { + l = skipwhite(ml_get(lnum)); + if (cin_nocode(l)) // skip comment lines + continue; + if (cin_ispreproc_cont(&l, &lnum, &amount)) + continue; // ignore #define, #if, etc. + curwin->w_cursor.lnum = lnum; + + // Skip a comment or raw string. XXX + if ((trypos = ind_find_start_CORS(NULL)) != NULL) + { + lnum = trypos->lnum + 1; + continue; + } + + // XXX + if ((trypos = find_match_paren( + corr_ind_maxparen(&cur_curpos))) != NULL + && trypos->lnum == our_paren_pos.lnum + && trypos->col == our_paren_pos.col) + { + amount = get_indent_lnum(lnum); // XXX + + if (theline[0] == ')') + { + if (our_paren_pos.lnum != lnum + && cur_amount > amount) + cur_amount = amount; + amount = -1; + } + break; + } + } + } + + // Line up with line where the matching paren is. XXX + // If the line starts with a '(' or the indent for unclosed + // parentheses is zero, line up with the unclosed parentheses. + if (amount == -1) + { + int ignore_paren_col = 0; + int is_if_for_while = 0; + + if (curbuf->b_ind_if_for_while) + { + // Look for the outermost opening parenthesis on this line + // and check whether it belongs to an "if", "for" or "while". + + pos_T cursor_save = curwin->w_cursor; + pos_T outermost; + char_u *line; + + trypos = &our_paren_pos; + do { + outermost = *trypos; + curwin->w_cursor.lnum = outermost.lnum; + curwin->w_cursor.col = outermost.col; + + trypos = find_match_paren(curbuf->b_ind_maxparen); + } while (trypos && trypos->lnum == outermost.lnum); + + curwin->w_cursor = cursor_save; + + line = ml_get(outermost.lnum); + + is_if_for_while = + cin_is_if_for_while_before_offset(line, &outermost.col); + } + + amount = skip_label(our_paren_pos.lnum, &look); + look = skipwhite(look); + if (*look == '(') + { + linenr_T save_lnum = curwin->w_cursor.lnum; + char_u *line; + int look_col; + + // Ignore a '(' in front of the line that has a match before + // our matching '('. + curwin->w_cursor.lnum = our_paren_pos.lnum; + line = ml_get_curline(); + look_col = (int)(look - line); + curwin->w_cursor.col = look_col + 1; + if ((trypos = findmatchlimit(NULL, ')', 0, + curbuf->b_ind_maxparen)) + != NULL + && trypos->lnum == our_paren_pos.lnum + && trypos->col < our_paren_pos.col) + ignore_paren_col = trypos->col + 1; + + curwin->w_cursor.lnum = save_lnum; + look = ml_get(our_paren_pos.lnum) + look_col; + } + if (theline[0] == ')' || (curbuf->b_ind_unclosed == 0 + && is_if_for_while == 0) + || (!curbuf->b_ind_unclosed_noignore && *look == '(' + && ignore_paren_col == 0)) + { + // If we're looking at a close paren, line up right there; + // otherwise, line up with the next (non-white) character. + // When b_ind_unclosed_wrapped is set and the matching paren is + // the last nonwhite character of the line, use either the + // indent of the current line or the indentation of the next + // outer paren and add b_ind_unclosed_wrapped (for very long + // lines). + if (theline[0] != ')') + { + cur_amount = MAXCOL; + l = ml_get(our_paren_pos.lnum); + if (curbuf->b_ind_unclosed_wrapped + && cin_ends_in(l, (char_u *)"(", NULL)) + { + // look for opening unmatched paren, indent one level + // for each additional level + n = 1; + for (col = 0; col < our_paren_pos.col; ++col) + { + switch (l[col]) + { + case '(': + case '{': ++n; + break; + + case ')': + case '}': if (n > 1) + --n; + break; + } + } + + our_paren_pos.col = 0; + amount += n * curbuf->b_ind_unclosed_wrapped; + } + else if (curbuf->b_ind_unclosed_whiteok) + our_paren_pos.col++; + else + { + col = our_paren_pos.col + 1; + while (VIM_ISWHITE(l[col])) + col++; + if (l[col] != NUL) // In case of trailing space + our_paren_pos.col = col; + else + our_paren_pos.col++; + } + } + + // Find how indented the paren is, or the character after it + // if we did the above "if". + if (our_paren_pos.col > 0) + { + getvcol(curwin, &our_paren_pos, &col, NULL, NULL); + if (cur_amount > (int)col) + cur_amount = col; + } + } + + if (theline[0] == ')' && curbuf->b_ind_matching_paren) + { + // Line up with the start of the matching paren line. + } + else if ((curbuf->b_ind_unclosed == 0 && is_if_for_while == 0) + || (!curbuf->b_ind_unclosed_noignore + && *look == '(' && ignore_paren_col == 0)) + { + if (cur_amount != MAXCOL) + amount = cur_amount; + } + else + { + // Add b_ind_unclosed2 for each '(' before our matching one, + // but ignore (void) before the line (ignore_paren_col). + col = our_paren_pos.col; + while ((int)our_paren_pos.col > ignore_paren_col) + { + --our_paren_pos.col; + switch (*ml_get_pos(&our_paren_pos)) + { + case '(': amount += curbuf->b_ind_unclosed2; + col = our_paren_pos.col; + break; + case ')': amount -= curbuf->b_ind_unclosed2; + col = MAXCOL; + break; + } + } + + // Use b_ind_unclosed once, when the first '(' is not inside + // braces + if (col == MAXCOL) + amount += curbuf->b_ind_unclosed; + else + { + curwin->w_cursor.lnum = our_paren_pos.lnum; + curwin->w_cursor.col = col; + if (find_match_paren_after_brace(curbuf->b_ind_maxparen) + != NULL) + amount += curbuf->b_ind_unclosed2; + else + { + if (is_if_for_while) + amount += curbuf->b_ind_if_for_while; + else + amount += curbuf->b_ind_unclosed; + } + } + // For a line starting with ')' use the minimum of the two + // positions, to avoid giving it more indent than the previous + // lines: + // func_long_name( if (x + // arg && yy + // ) ^ not here ) ^ not here + if (cur_amount < amount) + amount = cur_amount; + } + } + + // add extra indent for a comment + if (cin_iscomment(theline)) + amount += curbuf->b_ind_comment; + } + else + { + // We are inside braces, there is a { before this line at the position + // stored in tryposBrace. + // Make a copy of tryposBrace, it may point to pos_copy inside + // find_start_brace(), which may be changed somewhere. + tryposCopy = *tryposBrace; + tryposBrace = &tryposCopy; + trypos = tryposBrace; + ourscope = trypos->lnum; + start = ml_get(ourscope); + + // Now figure out how indented the line is in general. + // If the brace was at the start of the line, we use that; + // otherwise, check out the indentation of the line as + // a whole and then add the "imaginary indent" to that. + look = skipwhite(start); + if (*look == '{') + { + getvcol(curwin, trypos, &col, NULL, NULL); + amount = col; + if (*start == '{') + start_brace = BRACE_IN_COL0; + else + start_brace = BRACE_AT_START; + } + else + { + // That opening brace might have been on a continuation + // line. if so, find the start of the line. + curwin->w_cursor.lnum = ourscope; + + // Position the cursor over the rightmost paren, so that + // matching it will take us back to the start of the line. + lnum = ourscope; + if (find_last_paren(start, '(', ')') + && (trypos = find_match_paren(curbuf->b_ind_maxparen)) + != NULL) + lnum = trypos->lnum; + + // It could have been something like + // case 1: if (asdf && + // ldfd) { + // } + if ((curbuf->b_ind_js || curbuf->b_ind_keep_case_label) + && cin_iscase(skipwhite(ml_get_curline()), FALSE)) + amount = get_indent(); + else if (curbuf->b_ind_js) + amount = get_indent_lnum(lnum); + else + amount = skip_label(lnum, &l); + + start_brace = BRACE_AT_END; + } + + // For Javascript check if the line starts with "key:". + if (curbuf->b_ind_js) + js_cur_has_key = cin_has_js_key(theline); + + // If we're looking at a closing brace, that's where + // we want to be. otherwise, add the amount of room + // that an indent is supposed to be. + if (theline[0] == '}') + { + // they may want closing braces to line up with something + // other than the open brace. indulge them, if so. + amount += curbuf->b_ind_close_extra; + } + else + { + // If we're looking at an "else", try to find an "if" + // to match it with. + // If we're looking at a "while", try to find a "do" + // to match it with. + lookfor = LOOKFOR_INITIAL; + if (cin_iselse(theline)) + lookfor = LOOKFOR_IF; + else if (cin_iswhileofdo(theline, cur_curpos.lnum)) // XXX + lookfor = LOOKFOR_DO; + if (lookfor != LOOKFOR_INITIAL) + { + curwin->w_cursor.lnum = cur_curpos.lnum; + if (find_match(lookfor, ourscope) == OK) + { + amount = get_indent(); // XXX + goto theend; + } + } + + // We get here if we are not on an "while-of-do" or "else" (or + // failed to find a matching "if"). + // Search backwards for something to line up with. + // First set amount for when we don't find anything. + + // if the '{' is _really_ at the left margin, use the imaginary + // location of a left-margin brace. Otherwise, correct the + // location for b_ind_open_extra. + + if (start_brace == BRACE_IN_COL0) // '{' is in column 0 + { + amount = curbuf->b_ind_open_left_imag; + lookfor_cpp_namespace = TRUE; + } + else if (start_brace == BRACE_AT_START && + lookfor_cpp_namespace) // '{' is at start + { + + lookfor_cpp_namespace = TRUE; + } + else + { + if (start_brace == BRACE_AT_END) // '{' is at end of line + { + amount += curbuf->b_ind_open_imag; + + l = skipwhite(ml_get_curline()); + if (cin_is_cpp_namespace(l)) + amount += curbuf->b_ind_cpp_namespace; + else if (cin_is_cpp_extern_c(l)) + amount += curbuf->b_ind_cpp_extern_c; + } + else + { + // Compensate for adding b_ind_open_extra later. + amount -= curbuf->b_ind_open_extra; + if (amount < 0) + amount = 0; + } + } + + lookfor_break = FALSE; + + if (cin_iscase(theline, FALSE)) // it's a switch() label + { + lookfor = LOOKFOR_CASE; // find a previous switch() label + amount += curbuf->b_ind_case; + } + else if (cin_isscopedecl(theline)) // private:, ... + { + lookfor = LOOKFOR_SCOPEDECL; // class decl is this block + amount += curbuf->b_ind_scopedecl; + } + else + { + if (curbuf->b_ind_case_break && cin_isbreak(theline)) + // break; ... + lookfor_break = TRUE; + + lookfor = LOOKFOR_INITIAL; + // b_ind_level from start of block + amount += curbuf->b_ind_level; + } + scope_amount = amount; + whilelevel = 0; + + // Search backwards. If we find something we recognize, line up + // with that. + // + // If we're looking at an open brace, indent + // the usual amount relative to the conditional + // that opens the block. + curwin->w_cursor = cur_curpos; + for (;;) + { + curwin->w_cursor.lnum--; + curwin->w_cursor.col = 0; + + // If we went all the way back to the start of our scope, line + // up with it. + if (curwin->w_cursor.lnum <= ourscope) + { + // We reached end of scope: + // If looking for a enum or structure initialization + // go further back: + // If it is an initializer (enum xxx or xxx =), then + // don't add ind_continuation, otherwise it is a variable + // declaration: + // int x, + // here; <-- add ind_continuation + if (lookfor == LOOKFOR_ENUM_OR_INIT) + { + if (curwin->w_cursor.lnum == 0 + || curwin->w_cursor.lnum + < ourscope - curbuf->b_ind_maxparen) + { + // nothing found (abuse curbuf->b_ind_maxparen as + // limit) assume terminated line (i.e. a variable + // initialization) + if (cont_amount > 0) + amount = cont_amount; + else if (!curbuf->b_ind_js) + amount += ind_continuation; + break; + } + + l = ml_get_curline(); + + // If we're in a comment or raw string now, skip to + // the start of it. + trypos = ind_find_start_CORS(NULL); + if (trypos != NULL) + { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + continue; + } + + // Skip preprocessor directives and blank lines. + if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum, + &amount)) + continue; + + if (cin_nocode(l)) + continue; + + terminated = cin_isterminated(l, FALSE, TRUE); + + // If we are at top level and the line looks like a + // function declaration, we are done + // (it's a variable declaration). + if (start_brace != BRACE_IN_COL0 + || !cin_isfuncdecl(&l, curwin->w_cursor.lnum, 0)) + { + // if the line is terminated with another ',' + // it is a continued variable initialization. + // don't add extra indent. + // TODO: does not work, if a function + // declaration is split over multiple lines: + // cin_isfuncdecl returns FALSE then. + if (terminated == ',') + break; + + // if it es a enum declaration or an assignment, + // we are done. + if (terminated != ';' && cin_isinit()) + break; + + // nothing useful found + if (terminated == 0 || terminated == '{') + continue; + } + + if (terminated != ';') + { + // Skip parens and braces. Position the cursor + // over the rightmost paren, so that matching it + // will take us back to the start of the line. + // XXX + trypos = NULL; + if (find_last_paren(l, '(', ')')) + trypos = find_match_paren( + curbuf->b_ind_maxparen); + + if (trypos == NULL && find_last_paren(l, '{', '}')) + trypos = find_start_brace(); + + if (trypos != NULL) + { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + continue; + } + } + + // it's a variable declaration, add indentation + // like in + // int a, + // b; + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + } + else if (lookfor == LOOKFOR_UNTERM) + { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + } + else + { + if (lookfor != LOOKFOR_TERM + && lookfor != LOOKFOR_CPP_BASECLASS + && lookfor != LOOKFOR_COMMA) + { + amount = scope_amount; + if (theline[0] == '{') + { + amount += curbuf->b_ind_open_extra; + added_to_amount = curbuf->b_ind_open_extra; + } + } + + if (lookfor_cpp_namespace) + { + // Looking for C++ namespace, need to look further + // back. + if (curwin->w_cursor.lnum == ourscope) + continue; + + if (curwin->w_cursor.lnum == 0 + || curwin->w_cursor.lnum + < ourscope - FIND_NAMESPACE_LIM) + break; + + l = ml_get_curline(); + + // If we're in a comment or raw string now, skip + // to the start of it. + trypos = ind_find_start_CORS(NULL); + if (trypos != NULL) + { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + continue; + } + + // Skip preprocessor directives and blank lines. + if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum, + &amount)) + continue; + + // Finally the actual check for "namespace". + if (cin_is_cpp_namespace(l)) + { + amount += curbuf->b_ind_cpp_namespace + - added_to_amount; + break; + } + else if (cin_is_cpp_extern_c(l)) + { + amount += curbuf->b_ind_cpp_extern_c + - added_to_amount; + break; + } + + if (cin_nocode(l)) + continue; + } + } + break; + } + + // If we're in a comment or raw string now, skip to the start + // of it. XXX + if ((trypos = ind_find_start_CORS(&raw_string_start)) != NULL) + { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + continue; + } + + l = ml_get_curline(); + + // If this is a switch() label, may line up relative to that. + // If this is a C++ scope declaration, do the same. + iscase = cin_iscase(l, FALSE); + if (iscase || cin_isscopedecl(l)) + { + // we are only looking for cpp base class + // declaration/initialization any longer + if (lookfor == LOOKFOR_CPP_BASECLASS) + break; + + // When looking for a "do" we are not interested in + // labels. + if (whilelevel > 0) + continue; + + // case xx: + // c = 99 + <- this indent plus continuation + //-> here; + if (lookfor == LOOKFOR_UNTERM + || lookfor == LOOKFOR_ENUM_OR_INIT) + { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + break; + } + + // case xx: <- line up with this case + // x = 333; + // case yy: + if ( (iscase && lookfor == LOOKFOR_CASE) + || (iscase && lookfor_break) + || (!iscase && lookfor == LOOKFOR_SCOPEDECL)) + { + // Check that this case label is not for another + // switch() XXX + if ((trypos = find_start_brace()) == NULL + || trypos->lnum == ourscope) + { + amount = get_indent(); // XXX + break; + } + continue; + } + + n = get_indent_nolabel(curwin->w_cursor.lnum); // XXX + + // case xx: if (cond) <- line up with this if + // y = y + 1; + // -> s = 99; + // + // case xx: + // if (cond) <- line up with this line + // y = y + 1; + // -> s = 99; + if (lookfor == LOOKFOR_TERM) + { + if (n) + amount = n; + + if (!lookfor_break) + break; + } + + // case xx: x = x + 1; <- line up with this x + // -> y = y + 1; + // + // case xx: if (cond) <- line up with this if + // -> y = y + 1; + if (n) + { + amount = n; + l = after_label(ml_get_curline()); + if (l != NULL && cin_is_cinword(l)) + { + if (theline[0] == '{') + amount += curbuf->b_ind_open_extra; + else + amount += curbuf->b_ind_level + + curbuf->b_ind_no_brace; + } + break; + } + + // Try to get the indent of a statement before the switch + // label. If nothing is found, line up relative to the + // switch label. + // break; <- may line up with this line + // case xx: + // -> y = 1; + scope_amount = get_indent() + (iscase // XXX + ? curbuf->b_ind_case_code + : curbuf->b_ind_scopedecl_code); + lookfor = curbuf->b_ind_case_break + ? LOOKFOR_NOBREAK : LOOKFOR_ANY; + continue; + } + + // Looking for a switch() label or C++ scope declaration, + // ignore other lines, skip {}-blocks. + if (lookfor == LOOKFOR_CASE || lookfor == LOOKFOR_SCOPEDECL) + { + if (find_last_paren(l, '{', '}') + && (trypos = find_start_brace()) != NULL) + { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + } + continue; + } + + // Ignore jump labels with nothing after them. + if (!curbuf->b_ind_js && cin_islabel()) + { + l = after_label(ml_get_curline()); + if (l == NULL || cin_nocode(l)) + continue; + } + + // Ignore #defines, #if, etc. + // Ignore comment and empty lines. + // (need to get the line again, cin_islabel() may have + // unlocked it) + l = ml_get_curline(); + if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum, &amount) + || cin_nocode(l)) + continue; + + // Are we at the start of a cpp base class declaration or + // constructor initialization? XXX + n = FALSE; + if (lookfor != LOOKFOR_TERM && curbuf->b_ind_cpp_baseclass > 0) + { + n = cin_is_cpp_baseclass(&cache_cpp_baseclass); + l = ml_get_curline(); + } + if (n) + { + if (lookfor == LOOKFOR_UNTERM) + { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + } + else if (theline[0] == '{') + { + // Need to find start of the declaration. + lookfor = LOOKFOR_UNTERM; + ind_continuation = 0; + continue; + } + else + // XXX + amount = get_baseclass_amount( + cache_cpp_baseclass.lpos.col); + break; + } + else if (lookfor == LOOKFOR_CPP_BASECLASS) + { + // only look, whether there is a cpp base class + // declaration or initialization before the opening brace. + if (cin_isterminated(l, TRUE, FALSE)) + break; + else + continue; + } + + // What happens next depends on the line being terminated. + // If terminated with a ',' only consider it terminating if + // there is another unterminated statement behind, eg: + // 123, + // sizeof + // here + // Otherwise check whether it is a enumeration or structure + // initialisation (not indented) or a variable declaration + // (indented). + terminated = cin_isterminated(l, FALSE, TRUE); + + if (js_cur_has_key) + { + js_cur_has_key = 0; // only check the first line + if (curbuf->b_ind_js && terminated == ',') + { + // For Javascript we might be inside an object: + // key: something, <- align with this + // key: something + // or: + // key: something + <- align with this + // something, + // key: something + lookfor = LOOKFOR_JS_KEY; + } + } + if (lookfor == LOOKFOR_JS_KEY && cin_has_js_key(l)) + { + amount = get_indent(); + break; + } + if (lookfor == LOOKFOR_COMMA) + { + if (tryposBrace != NULL && tryposBrace->lnum + >= curwin->w_cursor.lnum) + break; + if (terminated == ',') + // line below current line is the one that starts a + // (possibly broken) line ending in a comma. + break; + else + { + amount = get_indent(); + if (curwin->w_cursor.lnum - 1 == ourscope) + // line above is start of the scope, thus current + // line is the one that stars a (possibly broken) + // line ending in a comma. + break; + } + } + + if (terminated == 0 || (lookfor != LOOKFOR_UNTERM + && terminated == ',')) + { + if (lookfor != LOOKFOR_ENUM_OR_INIT && + (*skipwhite(l) == '[' || l[STRLEN(l) - 1] == '[')) + amount += ind_continuation; + // if we're in the middle of a paren thing, + // go back to the line that starts it so + // we can get the right prevailing indent + // if ( foo && + // bar ) + + // Position the cursor over the rightmost paren, so that + // matching it will take us back to the start of the line. + // Ignore a match before the start of the block. + (void)find_last_paren(l, '(', ')'); + trypos = find_match_paren(corr_ind_maxparen(&cur_curpos)); + if (trypos != NULL && (trypos->lnum < tryposBrace->lnum + || (trypos->lnum == tryposBrace->lnum + && trypos->col < tryposBrace->col))) + trypos = NULL; + + // If we are looking for ',', we also look for matching + // braces. + if (trypos == NULL && terminated == ',' + && find_last_paren(l, '{', '}')) + trypos = find_start_brace(); + + if (trypos != NULL) + { + // Check if we are on a case label now. This is + // handled above. + // case xx: if ( asdf && + // asdf) + curwin->w_cursor = *trypos; + l = ml_get_curline(); + if (cin_iscase(l, FALSE) || cin_isscopedecl(l)) + { + ++curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + continue; + } + } + + /* + * Skip over continuation lines to find the one to get the + * indent from + * char *usethis = "bla\ + * bla", + * here; + */ + if (terminated == ',') + { + while (curwin->w_cursor.lnum > 1) + { + l = ml_get(curwin->w_cursor.lnum - 1); + if (*l == NUL || l[STRLEN(l) - 1] != '\\') + break; + --curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + } + } + + // Get indent and pointer to text for current line, + // ignoring any jump label. XXX + if (curbuf->b_ind_js) + cur_amount = get_indent(); + else + cur_amount = skip_label(curwin->w_cursor.lnum, &l); + // If this is just above the line we are indenting, and it + // starts with a '{', line it up with this line. + // while (not) + // -> { + // } + if (terminated != ',' && lookfor != LOOKFOR_TERM + && theline[0] == '{') + { + amount = cur_amount; + // Only add b_ind_open_extra when the current line + // doesn't start with a '{', which must have a match + // in the same line (scope is the same). Probably: + // { 1, 2 }, + // -> { 3, 4 } + if (*skipwhite(l) != '{') + amount += curbuf->b_ind_open_extra; + + if (curbuf->b_ind_cpp_baseclass && !curbuf->b_ind_js) + { + // have to look back, whether it is a cpp base + // class declaration or initialization + lookfor = LOOKFOR_CPP_BASECLASS; + continue; + } + break; + } + + // Check if we are after an "if", "while", etc. + // Also allow " } else". + if (cin_is_cinword(l) || cin_iselse(skipwhite(l))) + { + // Found an unterminated line after an if (), line up + // with the last one. + // if (cond) + // 100 + + // -> here; + if (lookfor == LOOKFOR_UNTERM + || lookfor == LOOKFOR_ENUM_OR_INIT) + { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + break; + } + + // If this is just above the line we are indenting, we + // are finished. + // while (not) + // -> here; + // Otherwise this indent can be used when the line + // before this is terminated. + // yyy; + // if (stat) + // while (not) + // xxx; + // -> here; + amount = cur_amount; + if (theline[0] == '{') + amount += curbuf->b_ind_open_extra; + if (lookfor != LOOKFOR_TERM) + { + amount += curbuf->b_ind_level + + curbuf->b_ind_no_brace; + break; + } + + // Special trick: when expecting the while () after a + // do, line up with the while() + // do + // x = 1; + // -> here + l = skipwhite(ml_get_curline()); + if (cin_isdo(l)) + { + if (whilelevel == 0) + break; + --whilelevel; + } + + // When searching for a terminated line, don't use the + // one between the "if" and the matching "else". + // Need to use the scope of this "else". XXX + // If whilelevel != 0 continue looking for a "do {". + if (cin_iselse(l) && whilelevel == 0) + { + // If we're looking at "} else", let's make sure we + // find the opening brace of the enclosing scope, + // not the one from "if () {". + if (*l == '}') + curwin->w_cursor.col = + (colnr_T)(l - ml_get_curline()) + 1; + + if ((trypos = find_start_brace()) == NULL + || find_match(LOOKFOR_IF, trypos->lnum) + == FAIL) + break; + } + } + + // If we're below an unterminated line that is not an + // "if" or something, we may line up with this line or + // add something for a continuation line, depending on + // the line before this one. + else + { + // Found two unterminated lines on a row, line up with + // the last one. + // c = 99 + + // 100 + + // -> here; + if (lookfor == LOOKFOR_UNTERM) + { + // When line ends in a comma add extra indent + if (terminated == ',') + amount += ind_continuation; + break; + } + + if (lookfor == LOOKFOR_ENUM_OR_INIT) + { + // Found two lines ending in ',', lineup with the + // lowest one, but check for cpp base class + // declaration/initialization, if it is an + // opening brace or we are looking just for + // enumerations/initializations. + if (terminated == ',') + { + if (curbuf->b_ind_cpp_baseclass == 0) + break; + + lookfor = LOOKFOR_CPP_BASECLASS; + continue; + } + + // Ignore unterminated lines in between, but + // reduce indent. + if (amount > cur_amount) + amount = cur_amount; + } + else + { + // Found first unterminated line on a row, may + // line up with this line, remember its indent + // 100 + + // -> here; + l = ml_get_curline(); + amount = cur_amount; + + n = (int)STRLEN(l); + if (terminated == ',' && (*skipwhite(l) == ']' + || (n >=2 && l[n - 2] == ']'))) + break; + + // If previous line ends in ',', check whether we + // are in an initialization or enum + // struct xxx = + // { + // sizeof a, + // 124 }; + // or a normal possible continuation line. + // but only, of no other statement has been found + // yet. + if (lookfor == LOOKFOR_INITIAL && terminated == ',') + { + if (curbuf->b_ind_js) + { + // Search for a line ending in a comma + // and line up with the line below it + // (could be the current line). + // some = [ + // 1, <- line up here + // 2, + // some = [ + // 3 + <- line up here + // 4 * + // 5, + // 6, + if (cin_iscomment(skipwhite(l))) + break; + lookfor = LOOKFOR_COMMA; + trypos = find_match_char('[', + curbuf->b_ind_maxparen); + if (trypos != NULL) + { + if (trypos->lnum + == curwin->w_cursor.lnum - 1) + { + // Current line is first inside + // [], line up with it. + break; + } + ourscope = trypos->lnum; + } + } + else + { + lookfor = LOOKFOR_ENUM_OR_INIT; + cont_amount = cin_first_id_amount(); + } + } + else + { + if (lookfor == LOOKFOR_INITIAL + && *l != NUL + && l[STRLEN(l) - 1] == '\\') + // XXX + cont_amount = cin_get_equal_amount( + curwin->w_cursor.lnum); + if (lookfor != LOOKFOR_TERM + && lookfor != LOOKFOR_JS_KEY + && lookfor != LOOKFOR_COMMA + && raw_string_start != curwin->w_cursor.lnum) + lookfor = LOOKFOR_UNTERM; + } + } + } + } + + // Check if we are after a while (cond); + // If so: Ignore until the matching "do". + else if (cin_iswhileofdo_end(terminated)) // XXX + { + // Found an unterminated line after a while ();, line up + // with the last one. + // while (cond); + // 100 + <- line up with this one + // -> here; + if (lookfor == LOOKFOR_UNTERM + || lookfor == LOOKFOR_ENUM_OR_INIT) + { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + break; + } + + if (whilelevel == 0) + { + lookfor = LOOKFOR_TERM; + amount = get_indent(); // XXX + if (theline[0] == '{') + amount += curbuf->b_ind_open_extra; + } + ++whilelevel; + } + + // We are after a "normal" statement. + // If we had another statement we can stop now and use the + // indent of that other statement. + // Otherwise the indent of the current statement may be used, + // search backwards for the next "normal" statement. + else + { + // Skip single break line, if before a switch label. It + // may be lined up with the case label. + if (lookfor == LOOKFOR_NOBREAK + && cin_isbreak(skipwhite(ml_get_curline()))) + { + lookfor = LOOKFOR_ANY; + continue; + } + + // Handle "do {" line. + if (whilelevel > 0) + { + l = cin_skipcomment(ml_get_curline()); + if (cin_isdo(l)) + { + amount = get_indent(); // XXX + --whilelevel; + continue; + } + } + + // Found a terminated line above an unterminated line. Add + // the amount for a continuation line. + // x = 1; + // y = foo + + // -> here; + // or + // int x = 1; + // int foo, + // -> here; + if (lookfor == LOOKFOR_UNTERM + || lookfor == LOOKFOR_ENUM_OR_INIT) + { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + break; + } + + // Found a terminated line above a terminated line or "if" + // etc. line. Use the amount of the line below us. + // x = 1; x = 1; + // if (asdf) y = 2; + // while (asdf) ->here; + // here; + // ->foo; + if (lookfor == LOOKFOR_TERM) + { + if (!lookfor_break && whilelevel == 0) + break; + } + + // First line above the one we're indenting is terminated. + // To know what needs to be done look further backward for + // a terminated line. + else + { + // position the cursor over the rightmost paren, so + // that matching it will take us back to the start of + // the line. Helps for: + // func(asdr, + // asdfasdf); + // here; +term_again: + l = ml_get_curline(); + if (find_last_paren(l, '(', ')') + && (trypos = find_match_paren( + curbuf->b_ind_maxparen)) != NULL) + { + // Check if we are on a case label now. This is + // handled above. + // case xx: if ( asdf && + // asdf) + curwin->w_cursor = *trypos; + l = ml_get_curline(); + if (cin_iscase(l, FALSE) || cin_isscopedecl(l)) + { + ++curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + continue; + } + } + + // When aligning with the case statement, don't align + // with a statement after it. + // case 1: { <-- don't use this { position + // stat; + // } + // case 2: + // stat; + // } + iscase = (curbuf->b_ind_keep_case_label + && cin_iscase(l, FALSE)); + + // Get indent and pointer to text for current line, + // ignoring any jump label. + amount = skip_label(curwin->w_cursor.lnum, &l); + + if (theline[0] == '{') + amount += curbuf->b_ind_open_extra; + // See remark above: "Only add b_ind_open_extra.." + l = skipwhite(l); + if (*l == '{') + amount -= curbuf->b_ind_open_extra; + lookfor = iscase ? LOOKFOR_ANY : LOOKFOR_TERM; + + // When a terminated line starts with "else" skip to + // the matching "if": + // else 3; + // indent this; + // Need to use the scope of this "else". XXX + // If whilelevel != 0 continue looking for a "do {". + if (lookfor == LOOKFOR_TERM + && *l != '}' + && cin_iselse(l) + && whilelevel == 0) + { + if ((trypos = find_start_brace()) == NULL + || find_match(LOOKFOR_IF, trypos->lnum) + == FAIL) + break; + continue; + } + + // If we're at the end of a block, skip to the start of + // that block. + l = ml_get_curline(); + if (find_last_paren(l, '{', '}') // XXX + && (trypos = find_start_brace()) != NULL) + { + curwin->w_cursor = *trypos; + // if not "else {" check for terminated again + // but skip block for "} else {" + l = cin_skipcomment(ml_get_curline()); + if (*l == '}' || !cin_iselse(l)) + goto term_again; + ++curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + } + } + } + } + } + } + + // add extra indent for a comment + if (cin_iscomment(theline)) + amount += curbuf->b_ind_comment; + + // subtract extra left-shift for jump labels + if (curbuf->b_ind_jump_label > 0 && original_line_islabel) + amount -= curbuf->b_ind_jump_label; + + goto theend; + } + + // ok -- we're not inside any sort of structure at all! + // + // This means we're at the top level, and everything should + // basically just match where the previous line is, except + // for the lines immediately following a function declaration, + // which are K&R-style parameters and need to be indented. + // + // if our line starts with an open brace, forget about any + // prevailing indent and make sure it looks like the start + // of a function + + if (theline[0] == '{') + { + amount = curbuf->b_ind_first_open; + goto theend; + } + + // If the NEXT line is a function declaration, the current + // line needs to be indented as a function type spec. + // Don't do this if the current line looks like a comment or if the + // current line is terminated, ie. ends in ';', or if the current line + // contains { or }: "void f() {\n if (1)" + if (cur_curpos.lnum < curbuf->b_ml.ml_line_count + && !cin_nocode(theline) + && vim_strchr(theline, '{') == NULL + && vim_strchr(theline, '}') == NULL + && !cin_ends_in(theline, (char_u *)":", NULL) + && !cin_ends_in(theline, (char_u *)",", NULL) + && cin_isfuncdecl(NULL, cur_curpos.lnum + 1, + cur_curpos.lnum + 1) + && !cin_isterminated(theline, FALSE, TRUE)) + { + amount = curbuf->b_ind_func_type; + goto theend; + } + + // search backwards until we find something we recognize + amount = 0; + curwin->w_cursor = cur_curpos; + while (curwin->w_cursor.lnum > 1) + { + curwin->w_cursor.lnum--; + curwin->w_cursor.col = 0; + + l = ml_get_curline(); + + // If we're in a comment or raw string now, skip to the start + // of it. XXX + if ((trypos = ind_find_start_CORS(NULL)) != NULL) + { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + continue; + } + + // Are we at the start of a cpp base class declaration or + // constructor initialization? XXX + n = FALSE; + if (curbuf->b_ind_cpp_baseclass != 0 && theline[0] != '{') + { + n = cin_is_cpp_baseclass(&cache_cpp_baseclass); + l = ml_get_curline(); + } + if (n) + { + // XXX + amount = get_baseclass_amount(cache_cpp_baseclass.lpos.col); + break; + } + + // Skip preprocessor directives and blank lines. + if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum, &amount)) + continue; + + if (cin_nocode(l)) + continue; + + // If the previous line ends in ',', use one level of + // indentation: + // int foo, + // bar; + // do this before checking for '}' in case of eg. + // enum foobar + // { + // ... + // } foo, + // bar; + n = 0; + if (cin_ends_in(l, (char_u *)",", NULL) + || (*l != NUL && (n = l[STRLEN(l) - 1]) == '\\')) + { + // take us back to opening paren + if (find_last_paren(l, '(', ')') + && (trypos = find_match_paren( + curbuf->b_ind_maxparen)) != NULL) + curwin->w_cursor = *trypos; + + /* + * For a line ending in ',' that is a continuation line go + * back to the first line with a backslash: + * char *foo = "bla\ + * bla", + * here; + */ + while (n == 0 && curwin->w_cursor.lnum > 1) + { + l = ml_get(curwin->w_cursor.lnum - 1); + if (*l == NUL || l[STRLEN(l) - 1] != '\\') + break; + --curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + } + + amount = get_indent(); // XXX + + if (amount == 0) + amount = cin_first_id_amount(); + if (amount == 0) + amount = ind_continuation; + break; + } + + // If the line looks like a function declaration, and we're + // not in a comment, put it the left margin. + if (cin_isfuncdecl(NULL, cur_curpos.lnum, 0)) // XXX + break; + l = ml_get_curline(); + + // Finding the closing '}' of a previous function. Put + // current line at the left margin. For when 'cino' has "fs". + if (*skipwhite(l) == '}') + break; + + // (matching {) + // If the previous line ends on '};' (maybe followed by + // comments) align at column 0. For example: + // char *string_array[] = { "foo", + // / * x * / "b};ar" }; / * foobar * / + if (cin_ends_in(l, (char_u *)"};", NULL)) + break; + + // If the previous line ends on '[' we are probably in an + // array constant: + // something = [ + // 234, <- extra indent + if (cin_ends_in(l, (char_u *)"[", NULL)) + { + amount = get_indent() + ind_continuation; + break; + } + + // Find a line only has a semicolon that belongs to a previous + // line ending in '}', e.g. before an #endif. Don't increase + // indent then. + if (*(look = skipwhite(l)) == ';' && cin_nocode(look + 1)) + { + pos_T curpos_save = curwin->w_cursor; + + while (curwin->w_cursor.lnum > 1) + { + look = ml_get(--curwin->w_cursor.lnum); + if (!(cin_nocode(look) || cin_ispreproc_cont( + &look, &curwin->w_cursor.lnum, &amount))) + break; + } + if (curwin->w_cursor.lnum > 0 + && cin_ends_in(look, (char_u *)"}", NULL)) + break; + + curwin->w_cursor = curpos_save; + } + + // If the PREVIOUS line is a function declaration, the current + // line (and the ones that follow) needs to be indented as + // parameters. + if (cin_isfuncdecl(&l, curwin->w_cursor.lnum, 0)) + { + amount = curbuf->b_ind_param; + break; + } + + // If the previous line ends in ';' and the line before the + // previous line ends in ',' or '\', ident to column zero: + // int foo, + // bar; + // indent_to_0 here; + if (cin_ends_in(l, (char_u *)";", NULL)) + { + l = ml_get(curwin->w_cursor.lnum - 1); + if (cin_ends_in(l, (char_u *)",", NULL) + || (*l != NUL && l[STRLEN(l) - 1] == '\\')) + break; + l = ml_get_curline(); + } + + // Doesn't look like anything interesting -- so just + // use the indent of this line. + // + // Position the cursor over the rightmost paren, so that + // matching it will take us back to the start of the line. + find_last_paren(l, '(', ')'); + + if ((trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) + curwin->w_cursor = *trypos; + amount = get_indent(); // XXX + break; + } + + // add extra indent for a comment + if (cin_iscomment(theline)) + amount += curbuf->b_ind_comment; + + /* + * add extra indent if the previous line ended in a backslash: + * "asdfasdf\ + * here"; + * char *foo = "asdf\ + * here"; + */ + if (cur_curpos.lnum > 1) + { + l = ml_get(cur_curpos.lnum - 1); + if (*l != NUL && l[STRLEN(l) - 1] == '\\') + { + cur_amount = cin_get_equal_amount(cur_curpos.lnum - 1); + if (cur_amount > 0) + amount = cur_amount; + else if (cur_amount == 0) + amount += ind_continuation; + } + } + +theend: + if (amount < 0) + amount = 0; + +laterend: + // put the cursor back where it belongs + curwin->w_cursor = cur_curpos; + + vim_free(linecopy); + + return amount; +} + + 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; +} + +# if defined(FEAT_EVAL) || defined(PROTO) +/* + * Get indent level from 'indentexpr'. + */ + int +get_expr_indent(void) +{ + int indent = -1; + char_u *inde_copy; + pos_T save_pos; + colnr_T save_curswant; + int save_set_curswant; + int save_State; + int use_sandbox = was_set_insecurely((char_u *)"indentexpr", + OPT_LOCAL); + + // Save and restore cursor position and curswant, in case it was changed + // via :normal commands + save_pos = curwin->w_cursor; + save_curswant = curwin->w_curswant; + save_set_curswant = curwin->w_set_curswant; + set_vim_var_nr(VV_LNUM, curwin->w_cursor.lnum); + if (use_sandbox) + ++sandbox; + ++textlock; + + // Need to make a copy, the 'indentexpr' option could be changed while + // evaluating it. + inde_copy = vim_strsave(curbuf->b_p_inde); + if (inde_copy != NULL) + { + indent = (int)eval_to_number(inde_copy); + vim_free(inde_copy); + } + + if (use_sandbox) + --sandbox; + --textlock; + + // Restore the cursor position so that 'indentexpr' doesn't need to. + // Pretend to be in Insert mode, allow cursor past end of line for "o" + // command. + save_State = State; + State = INSERT; + curwin->w_cursor = save_pos; + curwin->w_curswant = save_curswant; + curwin->w_set_curswant = save_set_curswant; + check_cursor(); + State = save_State; + + // If there is an error, just keep the current indent. + if (indent < 0) + indent = get_indent(); + + return indent; +} +# endif + +/* + * return TRUE if 'cinkeys' contains the key "keytyped", + * when == '*': Only if key is preceded with '*' (indent before insert) + * when == '!': Only if key is preceded with '!' (don't insert) + * when == ' ': Only if key is not preceded with '*'(indent afterwards) + * + * "keytyped" can have a few special values: + * KEY_OPEN_FORW + * KEY_OPEN_BACK + * KEY_COMPLETE just finished completion. + * + * If line_is_empty is TRUE accept keys with '0' before them. + */ + int +in_cinkeys( + int keytyped, + int when, + int line_is_empty) +{ + char_u *look; + int try_match; + int try_match_word; + char_u *p; + char_u *line; + int icase; + int i; + + if (keytyped == NUL) + // Can happen with CTRL-Y and CTRL-E on a short line. + return FALSE; + +#ifdef FEAT_EVAL + if (*curbuf->b_p_inde != NUL) + look = curbuf->b_p_indk; // 'indentexpr' set: use 'indentkeys' + else +#endif + look = curbuf->b_p_cink; // 'indentexpr' empty: use 'cinkeys' + while (*look) + { + // Find out if we want to try a match with this key, depending on + // 'when' and a '*' or '!' before the key. + switch (when) + { + case '*': try_match = (*look == '*'); break; + case '!': try_match = (*look == '!'); break; + default: try_match = (*look != '*'); break; + } + if (*look == '*' || *look == '!') + ++look; + + // If there is a '0', only accept a match if the line is empty. + // But may still match when typing last char of a word. + if (*look == '0') + { + try_match_word = try_match; + if (!line_is_empty) + try_match = FALSE; + ++look; + } + else + try_match_word = FALSE; + + // does it look like a control character? + if (*look == '^' +#ifdef EBCDIC + && (Ctrl_chr(look[1]) != 0) +#else + && look[1] >= '?' && look[1] <= '_' +#endif + ) + { + if (try_match && keytyped == Ctrl_chr(look[1])) + return TRUE; + look += 2; + } + // 'o' means "o" command, open forward. + // 'O' means "O" command, open backward. + else if (*look == 'o') + { + if (try_match && keytyped == KEY_OPEN_FORW) + return TRUE; + ++look; + } + else if (*look == 'O') + { + if (try_match && keytyped == KEY_OPEN_BACK) + return TRUE; + ++look; + } + + // 'e' means to check for "else" at start of line and just before the + // cursor. + else if (*look == 'e') + { + if (try_match && keytyped == 'e' && curwin->w_cursor.col >= 4) + { + p = ml_get_curline(); + if (skipwhite(p) == p + curwin->w_cursor.col - 4 && + STRNCMP(p + curwin->w_cursor.col - 4, "else", 4) == 0) + return TRUE; + } + ++look; + } + + // ':' only causes an indent if it is at the end of a label or case + // statement, or when it was before typing the ':' (to fix + // class::method for C++). + else if (*look == ':') + { + if (try_match && keytyped == ':') + { + p = ml_get_curline(); + if (cin_iscase(p, FALSE) || cin_isscopedecl(p) || cin_islabel()) + return TRUE; + // Need to get the line again after cin_islabel(). + p = ml_get_curline(); + if (curwin->w_cursor.col > 2 + && p[curwin->w_cursor.col - 1] == ':' + && p[curwin->w_cursor.col - 2] == ':') + { + p[curwin->w_cursor.col - 1] = ' '; + i = (cin_iscase(p, FALSE) || cin_isscopedecl(p) + || cin_islabel()); + p = ml_get_curline(); + p[curwin->w_cursor.col - 1] = ':'; + if (i) + return TRUE; + } + } + ++look; + } + + + // Is it a key in <>, maybe? + else if (*look == '<') + { + if (try_match) + { + // make up some named keys <o>, <O>, <e>, <0>, <>>, <<>, <*>, + // <:> and <!> so that people can re-indent on o, O, e, 0, <, + // >, *, : and ! keys if they really really want to. + if (vim_strchr((char_u *)"<>!*oOe0:", look[1]) != NULL + && keytyped == look[1]) + return TRUE; + + if (keytyped == get_special_key_code(look + 1)) + return TRUE; + } + while (*look && *look != '>') + look++; + while (*look == '>') + look++; + } + + // Is it a word: "=word"? + else if (*look == '=' && look[1] != ',' && look[1] != NUL) + { + ++look; + if (*look == '~') + { + icase = TRUE; + ++look; + } + else + icase = FALSE; + p = vim_strchr(look, ','); + if (p == NULL) + p = look + STRLEN(look); + if ((try_match || try_match_word) + && curwin->w_cursor.col >= (colnr_T)(p - look)) + { + int match = FALSE; + +#ifdef FEAT_INS_EXPAND + if (keytyped == KEY_COMPLETE) + { + char_u *s; + + // Just completed a word, check if it starts with "look". + // search back for the start of a word. + line = ml_get_curline(); + if (has_mbyte) + { + char_u *n; + + for (s = line + curwin->w_cursor.col; s > line; s = n) + { + n = mb_prevptr(line, s); + if (!vim_iswordp(n)) + break; + } + } + else + for (s = line + curwin->w_cursor.col; s > line; --s) + if (!vim_iswordc(s[-1])) + break; + if (s + (p - look) <= line + curwin->w_cursor.col + && (icase + ? MB_STRNICMP(s, look, p - look) + : STRNCMP(s, look, p - look)) == 0) + match = TRUE; + } + else +#endif + // TODO: multi-byte + if (keytyped == (int)p[-1] || (icase && keytyped < 256 + && TOLOWER_LOC(keytyped) == TOLOWER_LOC((int)p[-1]))) + { + line = ml_get_cursor(); + if ((curwin->w_cursor.col == (colnr_T)(p - look) + || !vim_iswordc(line[-(p - look) - 1])) + && (icase + ? MB_STRNICMP(line - (p - look), look, p - look) + : STRNCMP(line - (p - look), look, p - look)) + == 0) + match = TRUE; + } + if (match && try_match_word && !try_match) + { + // "0=word": Check if there are only blanks before the + // word. + if (getwhitecols_curline() != + (int)(curwin->w_cursor.col - (p - look))) + match = FALSE; + } + if (match) + return TRUE; + } + look = p; + } + + // ok, it's a boring generic character. + else + { + if (try_match && *look == keytyped) + return TRUE; + if (*look != NUL) + ++look; + } + + // Skip over ", ". + look = skip_to_option_part(look); + } + return FALSE; +} +#endif // FEAT_CINDENT + +#if defined(FEAT_LISP) || defined(PROTO) + + static int +lisp_match(char_u *p) +{ + char_u buf[LSIZE]; + int len; + char_u *word = *curbuf->b_p_lw != NUL ? curbuf->b_p_lw : p_lispwords; + + while (*word != NUL) + { + (void)copy_option_part(&word, buf, LSIZE, ","); + len = (int)STRLEN(buf); + if (STRNCMP(buf, p, len) == 0 && p[len] == ' ') + return TRUE; + } + return FALSE; +} + +/* + * When 'p' is present in 'cpoptions, a Vi compatible method is used. + * The incompatible newer method is quite a bit better at indenting + * code in lisp-like languages than the traditional one; it's still + * mostly heuristics however -- Dirk van Deun, dirk@rave.org + * + * TODO: + * Findmatch() should be adapted for lisp, also to make showmatch + * work correctly: now (v5.3) it seems all C/C++ oriented: + * - it does not recognize the #\( and #\) notations as character literals + * - it doesn't know about comments starting with a semicolon + * - it incorrectly interprets '(' as a character literal + * All this messes up get_lisp_indent in some rare cases. + * Update from Sergey Khorev: + * I tried to fix the first two issues. + */ + int +get_lisp_indent(void) +{ + pos_T *pos, realpos, paren; + int amount; + char_u *that; + colnr_T col; + colnr_T firsttry; + int parencount, quotecount; + int vi_lisp; + + // Set vi_lisp to use the vi-compatible method + vi_lisp = (vim_strchr(p_cpo, CPO_LISP) != NULL); + + realpos = curwin->w_cursor; + curwin->w_cursor.col = 0; + + if ((pos = findmatch(NULL, '(')) == NULL) + pos = findmatch(NULL, '['); + else + { + paren = *pos; + pos = findmatch(NULL, '['); + if (pos == NULL || LT_POSP(pos, &paren)) + pos = &paren; + } + if (pos != NULL) + { + // Extra trick: Take the indent of the first previous non-white + // line that is at the same () level. + amount = -1; + parencount = 0; + + while (--curwin->w_cursor.lnum >= pos->lnum) + { + if (linewhite(curwin->w_cursor.lnum)) + continue; + for (that = ml_get_curline(); *that != NUL; ++that) + { + if (*that == ';') + { + while (*(that + 1) != NUL) + ++that; + continue; + } + if (*that == '\\') + { + if (*(that + 1) != NUL) + ++that; + continue; + } + if (*that == '"' && *(that + 1) != NUL) + { + while (*++that && *that != '"') + { + // skipping escaped characters in the string + if (*that == '\\') + { + if (*++that == NUL) + break; + if (that[1] == NUL) + { + ++that; + break; + } + } + } + } + if (*that == '(' || *that == '[') + ++parencount; + else if (*that == ')' || *that == ']') + --parencount; + } + if (parencount == 0) + { + amount = get_indent(); + break; + } + } + + if (amount == -1) + { + curwin->w_cursor.lnum = pos->lnum; + curwin->w_cursor.col = pos->col; + col = pos->col; + + that = ml_get_curline(); + + if (vi_lisp && get_indent() == 0) + amount = 2; + else + { + char_u *line = that; + + amount = 0; + while (*that && col) + { + amount += lbr_chartabsize_adv(line, &that, (colnr_T)amount); + col--; + } + + // Some keywords require "body" indenting rules (the + // non-standard-lisp ones are Scheme special forms): + // + // (let ((a 1)) instead (let ((a 1)) + // (...)) of (...)) + + if (!vi_lisp && (*that == '(' || *that == '[') + && lisp_match(that + 1)) + amount += 2; + else + { + that++; + amount++; + firsttry = amount; + + while (VIM_ISWHITE(*that)) + { + amount += lbr_chartabsize(line, that, (colnr_T)amount); + ++that; + } + + if (*that && *that != ';') // not a comment line + { + // test *that != '(' to accommodate first let/do + // argument if it is more than one line + if (!vi_lisp && *that != '(' && *that != '[') + firsttry++; + + parencount = 0; + quotecount = 0; + + if (vi_lisp + || (*that != '"' + && *that != '\'' + && *that != '#' + && (*that < '0' || *that > '9'))) + { + while (*that + && (!VIM_ISWHITE(*that) + || quotecount + || parencount) + && (!((*that == '(' || *that == '[') + && !quotecount + && !parencount + && vi_lisp))) + { + if (*that == '"') + quotecount = !quotecount; + if ((*that == '(' || *that == '[') + && !quotecount) + ++parencount; + if ((*that == ')' || *that == ']') + && !quotecount) + --parencount; + if (*that == '\\' && *(that+1) != NUL) + amount += lbr_chartabsize_adv( + line, &that, (colnr_T)amount); + amount += lbr_chartabsize_adv( + line, &that, (colnr_T)amount); + } + } + while (VIM_ISWHITE(*that)) + { + amount += lbr_chartabsize( + line, that, (colnr_T)amount); + that++; + } + if (!*that || *that == ';') + amount = firsttry; + } + } + } + } + } + else + amount = 0; // no matching '(' or '[' found, use zero indent + + curwin->w_cursor = realpos; + + return amount; +} +#endif // FEAT_LISP + +#if defined(FEAT_CINDENT) || defined(PROTO) +/* + * Do C or expression indenting on the current line. + */ + void +do_c_expr_indent(void) +{ +# ifdef FEAT_EVAL + if (*curbuf->b_p_inde != NUL) + fixthisline(get_expr_indent); + else +# endif + fixthisline(get_c_indent); +} +#endif + +#if defined(FEAT_LISP) || defined(FEAT_CINDENT) || defined(PROTO) +/* + * Re-indent the current line, based on the current contents of it and the + * surrounding lines. Fixing the cursor position seems really easy -- I'm very + * confused what all the part that handles Control-T is doing that I'm not. + * "get_the_indent" should be get_c_indent, get_expr_indent or get_lisp_indent. + */ + + void +fixthisline(int (*get_the_indent)(void)) +{ + int amount = get_the_indent(); + + if (amount >= 0) + { + change_indent(INDENT_SET, amount, FALSE, 0, TRUE); + if (linewhite(curwin->w_cursor.lnum)) + did_ai = TRUE; // delete the indent if the line stays empty + } +} + + void +fix_indent(void) +{ + if (p_paste) + return; +# ifdef FEAT_LISP + if (curbuf->b_p_lisp && curbuf->b_p_ai) + fixthisline(get_lisp_indent); +# endif +# if defined(FEAT_LISP) && defined(FEAT_CINDENT) + else +# endif +# ifdef FEAT_CINDENT + if (cindent_on()) + do_c_expr_indent(); +# endif +} + +#endif |