diff options
Diffstat (limited to 'src/nvim/indent_c.c')
| -rw-r--r-- | src/nvim/indent_c.c | 3316 |
1 files changed, 3316 insertions, 0 deletions
diff --git a/src/nvim/indent_c.c b/src/nvim/indent_c.c new file mode 100644 index 0000000000..77ca3a34cb --- /dev/null +++ b/src/nvim/indent_c.c @@ -0,0 +1,3316 @@ +#include "vim.h" +#include "misc1.h" +#include "charset.h" +#include "edit.h" +#include "indent.h" +#include "indent_c.h" +#include "memline.h" +#include "memory.h" +#include "misc2.h" +#include "option.h" +#include "search.h" + + +static char_u *skip_string(char_u *p); +static pos_T *ind_find_start_comment(void); + +/* + * 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. + */ +static pos_T *ind_find_start_comment(void) +{ /* XXX */ + return find_start_comment(curbuf->b_ind_maxcomment); +} + +pos_T * +find_start_comment ( /* XXX */ + int ind_maxcomment +) +{ + 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; +} + +/* + * 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; + } + break; /* no string found */ + } + if (!*p) + --p; /* backup from NUL */ + return p; +} + + +/* + * Functions for C-indenting. + * Most of this originally comes from Eric Fischer. + */ +/* + * Below "XXX" means that this function may unlock the current line. + */ + +int cin_is_cinword(char_u *line); + +/* + * 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); + 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; + } + } + free(cinw_buf); + + return retval; +} + + +static char_u *cin_skipcomment(char_u *); +static int cin_nocode(char_u *); +static pos_T *find_line_comment(void); +static int cin_islabel_skip(char_u **); +static int cin_isdefault(char_u *); +static char_u *after_label(char_u *l); +static int get_indent_nolabel(linenr_T lnum); +static int skip_label(linenr_T, char_u **pp); +static int cin_first_id_amount(void); +static int cin_get_equal_amount(linenr_T lnum); +static int cin_ispreproc(char_u *); +static int cin_ispreproc_cont(char_u **pp, linenr_T *lnump); +static int cin_iscomment(char_u *); +static int cin_islinecomment(char_u *); +static int cin_isterminated(char_u *, int, int); +static int cin_isinit(void); +static int cin_isfuncdecl(char_u **, linenr_T, linenr_T); +static int cin_isif(char_u *); +static int cin_iselse(char_u *); +static int cin_isdo(char_u *); +static int cin_iswhileofdo(char_u *, linenr_T); +static int cin_is_if_for_while_before_offset(char_u *line, int *poffset); +static int cin_iswhileofdo_end(int terminated); +static int cin_isbreak(char_u *); +static int cin_is_cpp_baseclass(colnr_T *col); +static int get_baseclass_amount(int col); +static int cin_ends_in(char_u *, char_u *, char_u *); +static int cin_starts_with(char_u *s, char *word); +static int cin_skip2pos(pos_T *trypos); +static pos_T *find_start_brace(void); +static pos_T *find_match_paren(int); +static int corr_ind_maxparen(pos_T *startpos); +static int find_last_paren(char_u *l, int start, int end); +static int find_match(int lookfor, linenr_T ourscope); +static int cin_is_cpp_namespace(char_u *); + +/* + * 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; +} + +/* + * Check if string matches "label:"; move to character after ':' if true. + */ +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 now, skip to the start of the comment. + */ + curwin->w_cursor.col = 0; + if ((trypos = ind_find_start_comment()) != 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; + + 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)) { + if (has_name) + return FALSE; /* word character after skipping past name */ + ++p; + } else { + return FALSE; + } + } + return TRUE; + } + 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 ( /* XXX */ + linenr_T lnum +) +{ + 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". + */ +static int cin_ispreproc_cont(char_u **pp, linenr_T *lnump) +{ + char_u *line = *pp; + linenr_T lnum = *lnump; + int retval = FALSE; + + 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); + 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. + * "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; + int retval = FALSE; + pos_T *trypos; + int just_started = TRUE; + + if (sp == NULL) + s = ml_get(lnum); + else + s = *sp; + + if (find_last_paren(s, '(', ')') + && (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) { + lnum = trypos->lnum; + if (lnum < min_lnum) + return FALSE; + + s = ml_get(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 + ++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 ( /* XXX */ + char_u *p, + linenr_T lnum +) +{ + 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 ( + colnr_T *col /* return: column to align with */ +) +{ + 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(); + + *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; + } + + line = ml_get(lnum); + s = cin_skipcomment(line); + for (;; ) { + if (*s == NUL) { + if (lnum == curwin->w_cursor.lnum) + break; + /* Continue in the cursor line. */ + line = ml_get(++lnum); + s = cin_skipcomment(line); + if (*s == NUL) + continue; + } + + if (s[0] == '"') + 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; + *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 (*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) + *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)) + *col = 0; + + s = cin_skipcomment(s + 1); + } + } + + 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; + + p = line = ml_get(trypos->lnum); + while (*p && (colnr_T)(p - line) < trypos->col) { + if (cin_iscomment(p)) + p = cin_skipcomment(p); + else { + p = skip_string(p); + ++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_comment()) == NULL) /* XXX */ + break; + if (pos != NULL) + curwin->w_cursor.lnum = pos->lnum; + } + curwin->w_cursor = cursor_save; + return trypos; +} + +/* + * Find the matching '(', failing if it is in a comment. + * Return NULL if no match found. + */ +static pos_T * +find_match_paren ( /* XXX */ + int ind_maxparen +) +{ + pos_T cursor_save; + pos_T *trypos; + static pos_T pos_copy; + + cursor_save = curwin->w_cursor; + if ((trypos = findmatchlimit(NULL, '(', 0, ind_maxparen)) != NULL) { + /* check if the ( is in a // comment */ + if ((colnr_T)cin_skip2pos(trypos) > trypos->col) + trypos = NULL; + else { + pos_copy = *trypos; /* copy trypos, findmatch will change it */ + trypos = &pos_copy; + curwin->w_cursor = *trypos; + if (ind_find_start_comment() != NULL) /* XXX */ + trypos = NULL; + } + } + curwin->w_cursor = cursor_save; + 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; + + 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; + } + if (*p == ',') + ++p; + } +} + +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 *tryposBrace = NULL; + 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 + + 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; + + /* 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 0 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 */ + + /* + * #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; + + /* + * 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. + */ + else if (original_line_islabel && !curbuf->b_ind_js + && curbuf->b_ind_jump_label < 0) { + amount = 0; + } + /* + * If we're inside a "//" comment and there is a "//" comment in a + * previous line, lineup with that one. + */ + else 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; + } + /* + * If we're inside a comment and not looking at the start of the + * comment, try using the 'comments' option. + */ + else if (!cin_iscomment(theline) + && (trypos = ind_find_start_comment()) != 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, trypos, &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(trypos->lnum) + trypos->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 > trypos->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(trypos->lnum); + look = start + trypos->col + 2; /* skip / and * */ + if (*look != NUL) /* if something after it */ + trypos->col = (colnr_T)(skipwhite(look) - start); + } + getvcol(curwin, trypos, &col, NULL, NULL); + amount = col; + if (curbuf->b_ind_in_comment2 || *look == NUL) + amount += curbuf->b_ind_in_comment; + } + } + } + /* + * Are we inside parentheses or braces? + */ /* XXX */ + else 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)) + continue; /* ignore #define, #if, etc. */ + curwin->w_cursor.lnum = lnum; + + /* Skip a comment. XXX */ + if ((trypos = ind_find_start_comment()) != 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(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; + } + /* + * Are we at least inside braces, then? + */ + else { + 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 + amount = skip_label(lnum, &l); + + start_brace = BRACE_AT_END; + } + + /* + * 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 { + /* 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 now, skip to the start of the + * comment. + */ + trypos = ind_find_start_comment(); + 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)) + 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) { + 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 now, skip to the start of + * the comment. */ + trypos = ind_find_start_comment(); + 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)) + continue; + + /* Finally the actual check for "namespace". */ + if (cin_is_cpp_namespace(l)) { + amount += curbuf->b_ind_cpp_namespace + - added_to_amount; + break; + } + + if (cin_nocode(l)) + continue; + } + } + break; + } + + /* + * If we're in a comment now, skip to the start of the comment. + */ /* XXX */ + if ((trypos = ind_find_start_comment()) != 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) + || 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(&col); + 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(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 (terminated == 0 || (lookfor != LOOKFOR_UNTERM + && terminated == ',')) { + /* + * 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. + */ + (void)find_last_paren(l, '(', ')'); + trypos = find_match_paren(corr_ind_maxparen(&cur_curpos)); + + /* + * 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 = skip_label(curwin->w_cursor.lnum, &l); + else + cur_amount = get_indent(); + /* + * 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) { + /* 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; + */ + amount = cur_amount; + + /* + * 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 == ',') { + 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_UNTERM; + } + } + } + } + /* + * Check if we are after a while (cond); + * If so: Ignore until the matching "do". + */ + /* XXX */ + else if (cin_iswhileofdo_end(terminated)) { + /* + * 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; + } + /* + * 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. + */ + else { + /* + * 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; + } + /* + * 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)" + */ + else 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; + } else { + amount = 0; + curwin->w_cursor = cur_curpos; + + /* search backwards until we find something we recognize */ + + 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 now, skip to the start of the comment. + */ /* XXX */ + if ((trypos = ind_find_start_comment()) != 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(&col); + l = ml_get_curline(); + } + if (n) { + /* XXX */ + amount = get_baseclass_amount(col); + break; + } + + /* + * Skip preprocessor directives and blank lines. + */ + if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum)) + 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; + + /* + * 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))) + 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: + /* put the cursor back where it belongs */ + curwin->w_cursor = cur_curpos; + + free(linecopy); + + if (amount < 0) + return 0; + 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; +} + +/* + * Do C or expression indenting on the current line. + */ +void do_c_expr_indent(void) +{ + if (*curbuf->b_p_inde != NUL) + fixthisline(get_expr_indent); + else + fixthisline(get_c_indent); +} |