#include #include #include #include "nvim/vim.h" #include "nvim/ascii.h" #include "nvim/misc1.h" #include "nvim/charset.h" #include "nvim/cursor.h" #include "nvim/edit.h" #include "nvim/indent.h" #include "nvim/indent_c.h" #include "nvim/memline.h" #include "nvim/memory.h" #include "nvim/misc2.h" #include "nvim/option.h" #include "nvim/search.h" #include "nvim/strings.h" #ifdef INCLUDE_GENERATED_DECLARATIONS # include "indent_c.c.generated.h" #endif /* * 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; int64_t 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. */ /* * Return true if the string "line" starts with a word from 'cinwords'. */ bool cin_is_cinword(char_u *line) { bool retval = false; size_t cinw_len = STRLEN(curbuf->b_p_cinw) + 1; char_u *cinw_buf = xmalloc(cinw_len); line = skipwhite(line); for (char_u *cinw = curbuf->b_p_cinw; *cinw; ) { size_t 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; } /* * 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; } /// Checks if `text` starts with "key:". static bool cin_has_js_key(char_u *text) { char_u *s = skipwhite(text); char_u quote = 0; 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 && *s == quote) { ++s; } s = cin_skipcomment(s); // "::" is not a label, it's C++ return (*s == ':' && s[1] != ':'); } /// Checks 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 = cin_skipcomment(get_cursor_line_ptr()); /* * 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)) { return FALSE; } /* * 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 = get_cursor_line_ptr(); 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??? */ } /* * 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(get_cursor_line_ptr()); if (cin_starts_with(s, "typedef")) s = cin_skipcomment(s + 7); for (;; ) { int i, l; for (i = 0; i < (int)ARRAY_SIZE(skip); ++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 = get_cursor_line_ptr(); /* XXX */ if (cin_iscase(l, FALSE) || cin_isscopedecl(l) || cin_islabel()) { amount = get_indent_nolabel(lnum); l = after_label(get_cursor_line_ptr()); if (l == NULL) /* just in case */ l = get_cursor_line_ptr(); } else { amount = get_indent(); l = get_cursor_line_ptr(); } *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 = get_cursor_line_ptr(); 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 char_u 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 = get_cursor_line_ptr(); 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 = get_cursor_line_ptr(); 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 = get_cursor_line_ptr(); 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 = get_cursor_line_ptr(); *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(get_cursor_line_ptr(), '(', ')') && (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) amount = get_indent_lnum(trypos->lnum); /* XXX */ if (!cin_ends_in(get_cursor_line_ptr(), (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 '(', ignoring it if it is in a comment. /// @returns NULL or the found match. static pos_T *find_match_paren(int ind_maxparen) { return find_match_char('(', ind_maxparen); } static pos_T * find_match_char(char_u c, int ind_maxparen) { pos_T cursor_save; pos_T *trypos; static pos_T pos_copy; cursor_save = curwin->w_cursor; if ((trypos = findmatchlimit(NULL, c, 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) trypos = NULL; } } curwin->w_cursor = cursor_save; return trypos; } /// Find the matching '(', ignoring it if it is in a comment or before an /// unmatched {. /// @returns NULL or the found match. static pos_T *find_match_paren_after_brace(int ind_maxparen) { pos_T *trypos = find_match_paren(ind_maxparen); if (trypos == NULL) { return 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; 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; char_u *digits_start = p; /* remember where the digits start */ int n = getdigits_int(&p); divider = 0; if (*p == '.') { /* ".5s" means a fraction */ fraction = atoi((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_start) 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 tryposBraceCopy; 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_NO_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; /* 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)); /* * 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_int(&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 looking at a ']' that has a match? else if (*skipwhite(theline) == ']' && (trypos = find_match_char('[', curbuf->b_ind_maxparen)) != NULL) { // align with the line containing the '['. amount = get_indent_lnum(trypos->lnum); } /* * 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) { our_paren_pos = *trypos; /* * 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; 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 = get_cursor_line_ptr(); 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)) { 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. tryposBraceCopy = *tryposBrace; tryposBrace = &tryposBraceCopy; 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(get_cursor_line_ptr()), 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:". bool js_cur_has_key = curbuf->b_ind_js ? cin_has_js_key(theline) : false; // 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(get_cursor_line_ptr()); 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 an 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 = get_cursor_line_ptr(); /* * 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 is an 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 = get_cursor_line_ptr(); /* 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 = get_cursor_line_ptr(); /* * 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(get_cursor_line_ptr()); 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(get_cursor_line_ptr()); 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 = get_cursor_line_ptr(); 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 = get_cursor_line_ptr(); } 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 an 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 = false; // 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_NO_COMMA) { if (terminated != ',') { // Line below current line is the one that starts a // (possibly broken) line ending in a comma. break; } 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 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 = get_cursor_line_ptr(); 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(get_cursor_line_ptr()); 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 - get_cursor_line_ptr()) + 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 == ',') { 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, lookfor = LOOKFOR_NO_COMMA; amount = get_indent(); // XXX 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_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(get_cursor_line_ptr()))) { lookfor = LOOKFOR_ANY; continue; } /* * Handle "do {" line. */ if (whilelevel > 0) { l = cin_skipcomment(get_cursor_line_ptr()); 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 = get_cursor_line_ptr(); 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 = get_cursor_line_ptr(); 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 = get_cursor_line_ptr(); 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(get_cursor_line_ptr()); 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; } else { // 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; } /* * 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 = get_cursor_line_ptr(); /* * 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 = get_cursor_line_ptr(); } 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 = get_cursor_line_ptr(); /* * 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))) 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 = get_cursor_line_ptr(); } /* * 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(get_cursor_line_ptr()); if (!cin_iselse(look) && !cin_isif(look) && !cin_isdo(look) /* XXX */ && !cin_iswhileofdo(look, curwin->w_cursor.lnum)) { continue; } /* * 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(get_cursor_line_ptr()); 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(get_cursor_line_ptr()); 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); }