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vim/src/cindent.c
Christian Brabandt 49471963fe
patch 9.1.0022: Coverity complains about improper use of negative value 
Problem:  Coverity complains about improper use of negative value
Solution: Add a condition to validate that keytyped is larger or equal
          to 0

Apparently patch 9.1.0006 made it more explicit for Coverity, that the
TOLOWER_LOC() macros do not handle negative values properly. However,
that condition has always been there even before that, so add a
condition to verify that keytyped is indeed at least 0

closes: #13824

Signed-off-by: Christian Brabandt <cb@256bit.org>
2024-01-12 17:48:08 +01:00

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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* cindent.c: C indentation related functions
*
* Many of C-indenting functions originally come from Eric Fischer.
*
* Below "XXX" means that this function may unlock the current line.
*/
#include "vim.h"
// values for the "lookfor" state
#define LOOKFOR_INITIAL 0
#define LOOKFOR_IF 1
#define LOOKFOR_DO 2
#define LOOKFOR_CASE 3
#define LOOKFOR_ANY 4
#define LOOKFOR_TERM 5
#define LOOKFOR_UNTERM 6
#define LOOKFOR_SCOPEDECL 7
#define LOOKFOR_NOBREAK 8
#define LOOKFOR_CPP_BASECLASS 9
#define LOOKFOR_ENUM_OR_INIT 10
#define LOOKFOR_JS_KEY 11
#define LOOKFOR_COMMA 12
/*
* Return TRUE if the string "line" starts with a word from 'cinwords'.
*/
int
cin_is_cinword(char_u *line)
{
char_u *cinw;
char_u *cinw_buf;
int cinw_len;
int retval = FALSE;
int len;
cinw_len = (int)STRLEN(curbuf->b_p_cinw) + 1;
cinw_buf = alloc(cinw_len);
if (cinw_buf == NULL)
return FALSE;
line = skipwhite(line);
for (cinw = curbuf->b_p_cinw; *cinw; )
{
len = copy_option_part(&cinw, cinw_buf, cinw_len, ",");
if (STRNCMP(line, cinw_buf, len) == 0
&& (!vim_iswordc(line[len]) || !vim_iswordc(line[len - 1])))
{
retval = TRUE;
break;
}
}
vim_free(cinw_buf);
return retval;
}
/*
* 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] == NUL) // ' at end of line
break;
i = 2;
if (p[1] == '\\' && p[2] != NUL) // '\n' or '\000'
{
++i;
while (vim_isdigit(p[i - 1])) // '\000'
++i;
}
if (p[i - 1] != NUL && p[i] == '\'') // check for trailing '
{
p += i;
continue;
}
}
else if (p[0] == '"') // start of string
{
for (++p; p[0]; ++p)
{
if (p[0] == '\\' && p[1] != NUL)
++p;
else if (p[0] == '"') // end of string
break;
}
if (p[0] == '"')
continue; // continue for another string
}
else if (p[0] == 'R' && p[1] == '"')
{
// Raw string: R"[delim](...)[delim]"
char_u *delim = p + 2;
char_u *paren = vim_strchr(delim, '(');
if (paren != NULL)
{
size_t delim_len = paren - delim;
for (p += 3; *p; ++p)
if (p[0] == ')' && STRNCMP(p + 1, delim, delim_len) == 0
&& p[delim_len + 1] == '"')
{
p += delim_len + 1;
break;
}
if (p[0] == '"')
continue; // continue for another string
}
}
break; // no string found
}
if (!*p)
--p; // backup from NUL
return p;
}
/*
* Return TRUE if "line[col]" is inside a C string.
*/
int
is_pos_in_string(char_u *line, colnr_T col)
{
char_u *p;
for (p = line; *p && (colnr_T)(p - line) < col; ++p)
p = skip_string(p);
return !((colnr_T)(p - line) <= col);
}
/*
* Find the start of a comment, not knowing if we are in a comment right now.
* Search starts at w_cursor.lnum and goes backwards.
* Return NULL when not inside a comment.
*/
static pos_T *
ind_find_start_comment(void) // XXX
{
return find_start_comment(curbuf->b_ind_maxcomment);
}
pos_T *
find_start_comment(int ind_maxcomment) // XXX
{
pos_T *pos;
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.
if (!is_pos_in_string(ml_get(pos->lnum), pos->col))
break;
cur_maxcomment = curwin->w_cursor.lnum - pos->lnum - 1;
if (cur_maxcomment <= 0)
{
pos = NULL;
break;
}
}
return pos;
}
/*
* Find the start of a raw string, not knowing if we are in one right now.
* Search starts at w_cursor.lnum and goes backwards.
* Return NULL when not inside a raw string.
*/
static pos_T *
find_start_rawstring(int ind_maxcomment) // XXX
{
pos_T *pos;
int cur_maxcomment = ind_maxcomment;
for (;;)
{
pos = findmatchlimit(NULL, 'R', FM_BACKWARD, cur_maxcomment);
if (pos == NULL)
break;
// Check if the raw string start we found is inside a string.
// If it is then restrict the search to below this line and try again.
if (!is_pos_in_string(ml_get(pos->lnum), pos->col))
break;
cur_maxcomment = curwin->w_cursor.lnum - pos->lnum - 1;
if (cur_maxcomment <= 0)
{
pos = NULL;
break;
}
}
return pos;
}
/*
* Find the start of a comment or raw string, not knowing if we are in a
* comment or raw string right now.
* Search starts at w_cursor.lnum and goes backwards.
* If is_raw is given and returns start of raw_string, sets it to true.
* Return NULL when not inside a comment or raw string.
* "CORS" -> Comment Or Raw String
*/
static pos_T *
ind_find_start_CORS(linenr_T *is_raw) // XXX
{
static pos_T comment_pos_copy;
pos_T *comment_pos;
pos_T *rs_pos;
comment_pos = find_start_comment(curbuf->b_ind_maxcomment);
if (comment_pos != NULL)
{
// Need to make a copy of the static pos in findmatchlimit(),
// calling find_start_rawstring() may change it.
comment_pos_copy = *comment_pos;
comment_pos = &comment_pos_copy;
}
rs_pos = find_start_rawstring(curbuf->b_ind_maxcomment);
// If comment_pos is before rs_pos the raw string is inside the comment.
// If rs_pos is before comment_pos the comment is inside the raw string.
if (comment_pos == NULL || (rs_pos != NULL
&& LT_POS(*rs_pos, *comment_pos)))
{
if (is_raw != NULL && rs_pos != NULL)
*is_raw = rs_pos->lnum;
return rs_pos;
}
return comment_pos;
}
/*
* Return TRUE if C-indenting is on.
*/
int
cindent_on(void)
{
return (!p_paste && (curbuf->b_p_cin
#ifdef FEAT_EVAL
|| *curbuf->b_p_inde != NUL
#endif
));
}
// Find result cache for cpp_baseclass
typedef struct {
int found;
lpos_T lpos;
} cpp_baseclass_cache_T;
/*
* Skip over white space and C comments within the line.
* Also skip over Perl/shell comments if desired.
*/
static char_u *
cin_skipcomment(char_u *s)
{
while (*s)
{
char_u *prev_s = s;
s = skipwhite(s);
// Perl/shell # comment comment continues until eol. Require a space
// before # to avoid recognizing $#array.
if (curbuf->b_ind_hash_comment != 0 && s != prev_s && *s == '#')
{
s += STRLEN(s);
break;
}
if (*s != '/')
break;
++s;
if (*s == '/') // slash-slash comment continues till eol
{
s += STRLEN(s);
break;
}
if (*s != '*')
break;
for (++s; *s; ++s) // skip slash-star comment
if (s[0] == '*' && s[1] == '/')
{
s += 2;
break;
}
}
return s;
}
/*
* Return TRUE if there is no code at *s. White space and comments are
* not considered code.
*/
static int
cin_nocode(char_u *s)
{
return *cin_skipcomment(s) == NUL;
}
/*
* Recognize the start of a C or C++ comment.
*/
static int
cin_iscomment(char_u *p)
{
return (p[0] == '/' && (p[1] == '*' || p[1] == '/'));
}
/*
* Recognize the start of a "//" comment.
*/
static int
cin_islinecomment(char_u *p)
{
return (p[0] == '/' && p[1] == '/');
}
/*
* Check previous lines for a "//" line comment, skipping over blank lines.
*/
static pos_T *
find_line_comment(void) // XXX
{
static pos_T pos;
char_u *line;
char_u *p;
pos = curwin->w_cursor;
while (--pos.lnum > 0)
{
line = ml_get(pos.lnum);
p = skipwhite(line);
if (cin_islinecomment(p))
{
pos.col = (int)(p - line);
return &pos;
}
if (*p != NUL)
break;
}
return NULL;
}
/*
* Return TRUE if "text" starts with "key:".
*/
static int
cin_has_js_key(char_u *text)
{
char_u *s = skipwhite(text);
int quote = -1;
if (*s == '\'' || *s == '"')
{
// can be 'key': or "key":
quote = *s;
++s;
}
if (!vim_isIDc(*s)) // need at least one ID character
return FALSE;
while (vim_isIDc(*s))
++s;
if (*s == quote)
++s;
s = cin_skipcomment(s);
// "::" is not a label, it's C++
return (*s == ':' && s[1] != ':');
}
/*
* Check if string matches "label:"; move to character after ':' if true.
* "*s" must point to the start of the label, if there is one.
*/
static int
cin_islabel_skip(char_u **s)
{
if (!vim_isIDc(**s)) // need at least one ID character
return FALSE;
while (vim_isIDc(**s))
(*s)++;
*s = cin_skipcomment(*s);
// "::" is not a label, it's C++
return (**s == ':' && *++*s != ':');
}
/*
* Recognize a scope declaration label from the 'cinscopedecls' option.
*/
static int
cin_isscopedecl(char_u *p)
{
size_t cinsd_len;
char_u *cinsd_buf;
char_u *cinsd;
size_t len;
char_u *skip;
char_u *s = cin_skipcomment(p);
int found = FALSE;
cinsd_len = STRLEN(curbuf->b_p_cinsd) + 1;
cinsd_buf = alloc(cinsd_len);
if (cinsd_buf == NULL)
return FALSE;
for (cinsd = curbuf->b_p_cinsd; *cinsd; )
{
len = copy_option_part(&cinsd, cinsd_buf, (int)cinsd_len, ",");
if (STRNCMP(s, cinsd_buf, len) == 0)
{
skip = cin_skipcomment(s + len);
if (*skip == ':' && skip[1] != ':')
{
found = TRUE;
break;
}
}
}
vim_free(cinsd_buf);
return found;
}
/*
* Recognize a preprocessor statement: Any line that starts with '#'.
*/
static int
cin_ispreproc(char_u *s)
{
if (*skipwhite(s) == '#')
return TRUE;
return FALSE;
}
/*
* Return TRUE if line "*pp" at "*lnump" is a preprocessor statement or a
* continuation line of a preprocessor statement. Decrease "*lnump" to the
* start and return the line in "*pp".
* Put the amount of indent in "*amount".
*/
static int
cin_ispreproc_cont(char_u **pp, linenr_T *lnump, int *amount)
{
char_u *line = *pp;
linenr_T lnum = *lnump;
int retval = FALSE;
int candidate_amount = *amount;
if (*line != NUL && line[STRLEN(line) - 1] == '\\')
candidate_amount = get_indent_lnum(lnum);
for (;;)
{
if (cin_ispreproc(line))
{
retval = TRUE;
*lnump = lnum;
break;
}
if (lnum == 1)
break;
line = ml_get(--lnum);
if (*line == NUL || line[STRLEN(line) - 1] != '\\')
break;
}
if (lnum != *lnump)
*pp = ml_get(*lnump);
if (retval)
*amount = candidate_amount;
return retval;
}
static int
cin_iselse(
char_u *p)
{
if (*p == '}') // accept "} else"
p = cin_skipcomment(p + 1);
return (STRNCMP(p, "else", 4) == 0 && !vim_isIDc(p[4]));
}
/*
* Recognize a line that starts with '{' or '}', or ends with ';', ',', '{' or
* '}'.
* Don't consider "} else" a terminated line.
* If a line begins with an "else", only consider it terminated if no unmatched
* opening braces follow (handle "else { foo();" correctly).
* Return the character terminating the line (ending char's have precedence if
* both apply in order to determine initializations).
*/
static int
cin_isterminated(
char_u *s,
int incl_open, // include '{' at the end as terminator
int incl_comma) // recognize a trailing comma
{
char_u found_start = 0;
unsigned n_open = 0;
int is_else = FALSE;
s = cin_skipcomment(s);
if (*s == '{' || (*s == '}' && !cin_iselse(s)))
found_start = *s;
if (!found_start)
is_else = cin_iselse(s);
while (*s)
{
// skip over comments, "" strings and 'c'haracters
s = skip_string(cin_skipcomment(s));
if (*s == '}' && n_open > 0)
--n_open;
if ((!is_else || n_open == 0)
&& (*s == ';' || *s == '}' || (incl_comma && *s == ','))
&& cin_nocode(s + 1))
return *s;
else if (*s == '{')
{
if (incl_open && cin_nocode(s + 1))
return *s;
else
++n_open;
}
if (*s)
s++;
}
return found_start;
}
/*
* Return TRUE when "s" starts with "word" and then a non-ID character.
*/
static int
cin_starts_with(char_u *s, char *word)
{
int l = (int)STRLEN(word);
return (STRNCMP(s, word, l) == 0 && !vim_isIDc(s[l]));
}
/*
* Recognize a "default" switch label.
*/
static int
cin_isdefault(char_u *s)
{
return (STRNCMP(s, "default", 7) == 0
&& *(s = cin_skipcomment(s + 7)) == ':'
&& s[1] != ':');
}
/*
* Recognize a switch label: "case .*:" or "default:".
*/
static int
cin_iscase(
char_u *s,
int strict) // Allow relaxed check of case statement for JS
{
s = cin_skipcomment(s);
if (cin_starts_with(s, "case"))
{
for (s += 4; *s; ++s)
{
s = cin_skipcomment(s);
if (*s == NUL)
break;
if (*s == ':')
{
if (s[1] == ':') // skip over "::" for C++
++s;
else
return TRUE;
}
if (*s == '\'' && s[1] && s[2] == '\'')
s += 2; // skip over ':'
else if (*s == '/' && (s[1] == '*' || s[1] == '/'))
return FALSE; // stop at comment
else if (*s == '"')
{
// JS etc.
if (strict)
return FALSE; // stop at string
else
return TRUE;
}
}
return FALSE;
}
if (cin_isdefault(s))
return TRUE;
return FALSE;
}
/*
* Recognize a label: "label:".
* Note: curwin->w_cursor must be where we are looking for the label.
*/
static int
cin_islabel(void) // XXX
{
char_u *s;
s = cin_skipcomment(ml_get_curline());
// Exclude "default" from labels, since it should be indented
// like a switch label. Same for C++ scope declarations.
if (cin_isdefault(s))
return FALSE;
if (cin_isscopedecl(s))
return FALSE;
if (!cin_islabel_skip(&s))
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 or raw string now, skip to the start of
// it.
curwin->w_cursor.col = 0;
if ((trypos = ind_find_start_CORS(NULL)) != NULL) // XXX
curwin->w_cursor = *trypos;
line = ml_get_curline();
if (cin_ispreproc(line)) // ignore #defines, #if, etc.
continue;
if (*(line = cin_skipcomment(line)) == NUL)
continue;
curwin->w_cursor = cursor_save;
if (cin_isterminated(line, TRUE, FALSE)
|| cin_isscopedecl(line)
|| cin_iscase(line, TRUE)
|| (cin_islabel_skip(&line) && cin_nocode(line)))
return TRUE;
return FALSE;
}
curwin->w_cursor = cursor_save;
return TRUE; // label at start of file???
}
/*
* Return TRUE if string "s" ends with the string "find", possibly followed by
* white space and comments. Skip strings and comments.
* Ignore "ignore" after "find" if it's not NULL.
*/
static int
cin_ends_in(char_u *s, char_u *find, char_u *ignore)
{
char_u *p = s;
char_u *r;
int len = (int)STRLEN(find);
while (*p != NUL)
{
p = cin_skipcomment(p);
if (STRNCMP(p, find, len) == 0)
{
r = skipwhite(p + len);
if (ignore != NULL && STRNCMP(r, ignore, STRLEN(ignore)) == 0)
r = skipwhite(r + STRLEN(ignore));
if (cin_nocode(r))
return TRUE;
}
if (*p != NUL)
++p;
}
return FALSE;
}
/*
* Recognize structure initialization and enumerations:
* "[typedef] [static|public|protected|private] enum"
* "[typedef] [static|public|protected|private] = {"
*/
static int
cin_isinit(void)
{
char_u *s;
static char *skip[] = {"static", "public", "protected", "private"};
s = cin_skipcomment(ml_get_curline());
if (cin_starts_with(s, "typedef"))
s = cin_skipcomment(s + 7);
for (;;)
{
int i, l;
for (i = 0; i < (int)ARRAY_LENGTH(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;
}
// Maximum number of lines to search back for a "namespace" line.
#define FIND_NAMESPACE_LIM 20
/*
* Recognize a "namespace" scope declaration.
*/
static int
cin_is_cpp_namespace(char_u *s)
{
char_u *p;
int has_name = FALSE;
int has_name_start = FALSE;
s = cin_skipcomment(s);
// skip over "inline" and "export" in any order
while ((STRNCMP(s, "inline", 6) == 0 || STRNCMP(s, "export", 6) == 0)
&& (s[6] == NUL || !vim_iswordc(s[6])))
s = cin_skipcomment(skipwhite(s + 6));
if (STRNCMP(s, "namespace", 9) == 0 && (s[9] == NUL || !vim_iswordc(s[9])))
{
p = cin_skipcomment(skipwhite(s + 9));
while (*p != NUL)
{
if (VIM_ISWHITE(*p))
{
has_name = TRUE; // found end of a name
p = cin_skipcomment(skipwhite(p));
}
else if (*p == '{')
{
break;
}
else if (vim_iswordc(*p))
{
has_name_start = TRUE;
if (has_name)
return FALSE; // word character after skipping past name
++p;
}
else if (p[0] == ':' && p[1] == ':' && vim_iswordc(p[2]))
{
if (!has_name_start || has_name)
return FALSE;
// C++ 17 nested namespace
p += 3;
}
else
{
return FALSE;
}
}
return TRUE;
}
return FALSE;
}
/*
* Recognize a `extern "C"` or `extern "C++"` linkage specifications.
*/
static int
cin_is_cpp_extern_c(char_u *s)
{
char_u *p;
int has_string_literal = FALSE;
s = cin_skipcomment(s);
if (STRNCMP(s, "extern", 6) == 0 && (s[6] == NUL || !vim_iswordc(s[6])))
{
p = cin_skipcomment(skipwhite(s + 6));
while (*p != NUL)
{
if (VIM_ISWHITE(*p))
{
p = cin_skipcomment(skipwhite(p));
}
else if (*p == '{')
{
break;
}
else if (p[0] == '"' && p[1] == 'C' && p[2] == '"')
{
if (has_string_literal)
return FALSE;
has_string_literal = TRUE;
p += 3;
}
else if (p[0] == '"' && p[1] == 'C' && p[2] == '+' && p[3] == '+'
&& p[4] == '"')
{
if (has_string_literal)
return FALSE;
has_string_literal = TRUE;
p += 5;
}
else
{
return FALSE;
}
}
return has_string_literal ? TRUE : FALSE;
}
return FALSE;
}
/*
* Return a pointer to the first non-empty non-comment character after a ':'.
* Return NULL if not found.
* case 234: a = b;
* ^
*/
static char_u *
after_label(char_u *l)
{
for ( ; *l; ++l)
{
if (*l == ':')
{
if (l[1] == ':') // skip over "::" for C++
++l;
else if (!cin_iscase(l + 1, FALSE))
break;
}
else if (*l == '\'' && l[1] && l[2] == '\'')
l += 2; // skip over 'x'
}
if (*l == NUL)
return NULL;
l = cin_skipcomment(l + 1);
if (*l == NUL)
return NULL;
return l;
}
/*
* Get indent of line "lnum", skipping a label.
* Return 0 if there is nothing after the label.
*/
static int
get_indent_nolabel (linenr_T lnum) // XXX
{
char_u *l;
pos_T fp;
colnr_T col;
char_u *p;
l = ml_get(lnum);
p = after_label(l);
if (p == NULL)
return 0;
fp.col = (colnr_T)(p - l);
fp.lnum = lnum;
getvcol(curwin, &fp, &col, NULL, NULL);
return (int)col;
}
/*
* Find indent for line "lnum", ignoring any case or jump label.
* Also return a pointer to the text (after the label) in "pp".
* label: if (asdf && asdfasdf)
* ^
*/
static int
skip_label(linenr_T lnum, char_u **pp)
{
char_u *l;
int amount;
pos_T cursor_save;
cursor_save = curwin->w_cursor;
curwin->w_cursor.lnum = lnum;
l = ml_get_curline();
// XXX
if (cin_iscase(l, FALSE) || cin_isscopedecl(l) || cin_islabel())
{
amount = get_indent_nolabel(lnum);
l = after_label(ml_get_curline());
if (l == NULL) // just in case
l = ml_get_curline();
}
else
{
amount = get_indent();
l = ml_get_curline();
}
*pp = l;
curwin->w_cursor = cursor_save;
return amount;
}
/*
* Return the indent of the first variable name after a type in a declaration.
* int a, indent of "a"
* static struct foo b, indent of "b"
* enum bla c, indent of "c"
* Returns zero when it doesn't look like a declaration.
*/
static int
cin_first_id_amount(void)
{
char_u *line, *p, *s;
int len;
pos_T fp;
colnr_T col;
line = ml_get_curline();
p = skipwhite(line);
len = (int)(skiptowhite(p) - p);
if (len == 6 && STRNCMP(p, "static", 6) == 0)
{
p = skipwhite(p + 6);
len = (int)(skiptowhite(p) - p);
}
if (len == 6 && STRNCMP(p, "struct", 6) == 0)
p = skipwhite(p + 6);
else if (len == 4 && STRNCMP(p, "enum", 4) == 0)
p = skipwhite(p + 4);
else if ((len == 8 && STRNCMP(p, "unsigned", 8) == 0)
|| (len == 6 && STRNCMP(p, "signed", 6) == 0))
{
s = skipwhite(p + len);
if ((STRNCMP(s, "int", 3) == 0 && VIM_ISWHITE(s[3]))
|| (STRNCMP(s, "long", 4) == 0 && VIM_ISWHITE(s[4]))
|| (STRNCMP(s, "short", 5) == 0 && VIM_ISWHITE(s[5]))
|| (STRNCMP(s, "char", 4) == 0 && VIM_ISWHITE(s[4])))
p = s;
}
for (len = 0; vim_isIDc(p[len]); ++len)
;
if (len == 0 || !VIM_ISWHITE(p[len]) || cin_nocode(p))
return 0;
p = skipwhite(p + len);
fp.lnum = curwin->w_cursor.lnum;
fp.col = (colnr_T)(p - line);
getvcol(curwin, &fp, &col, NULL, NULL);
return (int)col;
}
/*
* Return the indent of the first non-blank after an equal sign.
* char *foo = "here";
* Return zero if no (useful) equal sign found.
* Return -1 if the line above "lnum" ends in a backslash.
* foo = "asdf\
* asdf\
* here";
*/
static int
cin_get_equal_amount(linenr_T lnum)
{
char_u *line;
char_u *s;
colnr_T col;
pos_T fp;
if (lnum > 1)
{
line = ml_get(lnum - 1);
if (*line != NUL && line[STRLEN(line) - 1] == '\\')
return -1;
}
line = s = ml_get(lnum);
while (*s != NUL && vim_strchr((char_u *)"=;{}\"'", *s) == NULL)
{
if (cin_iscomment(s)) // ignore comments
s = cin_skipcomment(s);
else
++s;
}
if (*s != '=')
return 0;
s = skipwhite(s + 1);
if (cin_nocode(s))
return 0;
if (*s == '"') // nice alignment for continued strings
++s;
fp.lnum = lnum;
fp.col = (colnr_T)(s - line);
getvcol(curwin, &fp, &col, NULL, NULL);
return (int)col;
}
/*
* Skip strings, chars and comments until at or past "trypos".
* Return the column found.
*/
static int
cin_skip2pos(pos_T *trypos)
{
char_u *line;
char_u *p;
char_u *new_p;
p = line = ml_get(trypos->lnum);
while (*p && (colnr_T)(p - line) < trypos->col)
{
if (cin_iscomment(p))
p = cin_skipcomment(p);
else
{
new_p = skip_string(p);
if (new_p == p)
++p;
else
p = new_p;
}
}
return (int)(p - line);
}
static pos_T *
find_match_char(int c, int ind_maxparen) // XXX
{
pos_T cursor_save;
pos_T *trypos;
static pos_T pos_copy;
int ind_maxp_wk;
cursor_save = curwin->w_cursor;
ind_maxp_wk = ind_maxparen;
retry:
if ((trypos = findmatchlimit(NULL, c, 0, ind_maxp_wk)) != NULL)
{
// check if the ( is in a // comment
if ((colnr_T)cin_skip2pos(trypos) > trypos->col)
{
ind_maxp_wk = ind_maxparen - (int)(cursor_save.lnum - trypos->lnum);
if (ind_maxp_wk > 0)
{
curwin->w_cursor = *trypos;
curwin->w_cursor.col = 0; // XXX
goto retry;
}
trypos = NULL;
}
else
{
pos_T *trypos_wk;
pos_copy = *trypos; // copy trypos, findmatch will change it
trypos = &pos_copy;
curwin->w_cursor = *trypos;
if ((trypos_wk = ind_find_start_CORS(NULL)) != NULL) // XXX
{
ind_maxp_wk = ind_maxparen - (int)(cursor_save.lnum
- trypos_wk->lnum);
if (ind_maxp_wk > 0)
{
curwin->w_cursor = *trypos_wk;
goto retry;
}
trypos = NULL;
}
}
}
curwin->w_cursor = cursor_save;
return trypos;
}
/*
* Find the matching '(', ignoring it if it is in a comment.
* Return NULL if no match found.
*/
static pos_T *
find_match_paren(int ind_maxparen) // XXX
{
return find_match_char('(', ind_maxparen);
}
/*
* Set w_cursor.col to the column number of the last unmatched ')' or '{' in
* line "l". "l" must point to the start of the line.
*/
static int
find_last_paren(char_u *l, int start, int end)
{
int i;
int retval = FALSE;
int open_count = 0;
curwin->w_cursor.col = 0; // default is start of line
for (i = 0; l[i] != NUL; i++)
{
i = (int)(cin_skipcomment(l + i) - l); // ignore parens in comments
i = (int)(skip_string(l + i) - l); // ignore parens in quotes
if (l[i] == start)
++open_count;
else if (l[i] == end)
{
if (open_count > 0)
--open_count;
else
{
curwin->w_cursor.col = i;
retval = TRUE;
}
}
}
return retval;
}
/*
* Recognize the basic picture of a function declaration -- it needs to
* have an open paren somewhere and a close paren at the end of the line and
* no semicolons anywhere.
* When a line ends in a comma we continue looking in the next line.
* "sp" points to a string with the line. When looking at other lines it must
* be restored to the line. When it's NULL fetch lines here.
* "first_lnum" is where we start looking.
* "min_lnum" is the line before which we will not be looking.
*/
static int
cin_isfuncdecl(
char_u **sp,
linenr_T first_lnum,
linenr_T min_lnum)
{
char_u *s;
linenr_T lnum = first_lnum;
linenr_T save_lnum = curwin->w_cursor.lnum;
int retval = FALSE;
pos_T *trypos;
int just_started = TRUE;
if (sp == NULL)
s = ml_get(lnum);
else
s = *sp;
curwin->w_cursor.lnum = lnum;
if (find_last_paren(s, '(', ')')
&& (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL)
{
lnum = trypos->lnum;
if (lnum < min_lnum)
{
curwin->w_cursor.lnum = save_lnum;
return FALSE;
}
s = ml_get(lnum);
}
curwin->w_cursor.lnum = save_lnum;
// Ignore line starting with #.
if (cin_ispreproc(s))
return FALSE;
while (*s && *s != '(' && *s != ';' && *s != '\'' && *s != '"')
{
if (cin_iscomment(s)) // ignore comments
s = cin_skipcomment(s);
else if (*s == ':')
{
if (*(s + 1) == ':')
s += 2;
else
// To avoid a mistake in the following situation:
// A::A(int a, int b)
// : a(0) // <--not a function decl
// , b(0)
// {...
return FALSE;
}
else
++s;
}
if (*s != '(')
return FALSE; // ';', ' or " before any () or no '('
while (*s && *s != ';' && *s != '\'' && *s != '"')
{
if (*s == ')' && cin_nocode(s + 1))
{
// ')' at the end: may have found a match
// Check for the previous line not to end in a backslash:
// #if defined(x) && {backslash}
// defined(y)
lnum = first_lnum - 1;
s = ml_get(lnum);
if (*s == NUL || s[STRLEN(s) - 1] != '\\')
retval = TRUE;
goto done;
}
if ((*s == ',' && cin_nocode(s + 1)) || s[1] == NUL || cin_nocode(s))
{
int comma = (*s == ',');
// ',' at the end: continue looking in the next line.
// At the end: check for ',' in the next line, for this style:
// func(arg1
// , arg2)
for (;;)
{
if (lnum >= curbuf->b_ml.ml_line_count)
break;
s = ml_get(++lnum);
if (!cin_ispreproc(s))
break;
}
if (lnum >= curbuf->b_ml.ml_line_count)
break;
// Require a comma at end of the line or a comma or ')' at the
// start of next line.
s = skipwhite(s);
if (!just_started && (!comma && *s != ',' && *s != ')'))
break;
just_started = FALSE;
}
else if (cin_iscomment(s)) // ignore comments
s = cin_skipcomment(s);
else
{
++s;
just_started = FALSE;
}
}
done:
if (lnum != first_lnum && sp != NULL)
*sp = ml_get(first_lnum);
return retval;
}
static int
cin_isif(char_u *p)
{
return (STRNCMP(p, "if", 2) == 0 && !vim_isIDc(p[2]));
}
static int
cin_isdo(char_u *p)
{
return (STRNCMP(p, "do", 2) == 0 && !vim_isIDc(p[2]));
}
/*
* Check if this is a "while" that should have a matching "do".
* We only accept a "while (condition) ;", with only white space between the
* ')' and ';'. The condition may be spread over several lines.
*/
static int
cin_iswhileofdo (char_u *p, linenr_T lnum) // XXX
{
pos_T cursor_save;
pos_T *trypos;
int retval = FALSE;
p = cin_skipcomment(p);
if (*p == '}') // accept "} while (cond);"
p = cin_skipcomment(p + 1);
if (cin_starts_with(p, "while"))
{
cursor_save = curwin->w_cursor;
curwin->w_cursor.lnum = lnum;
curwin->w_cursor.col = 0;
p = ml_get_curline();
while (*p && *p != 'w') // skip any '}', until the 'w' of the "while"
{
++p;
++curwin->w_cursor.col;
}
if ((trypos = findmatchlimit(NULL, 0, 0,
curbuf->b_ind_maxparen)) != NULL
&& *cin_skipcomment(ml_get_pos(trypos) + 1) == ';')
retval = TRUE;
curwin->w_cursor = cursor_save;
}
return retval;
}
/*
* Check whether in "p" there is an "if", "for" or "while" before "*poffset".
* Return 0 if there is none.
* Otherwise return !0 and update "*poffset" to point to the place where the
* string was found.
*/
static int
cin_is_if_for_while_before_offset(char_u *line, int *poffset)
{
int offset = *poffset;
if (offset-- < 2)
return 0;
while (offset > 2 && VIM_ISWHITE(line[offset]))
--offset;
offset -= 1;
if (!STRNCMP(line + offset, "if", 2))
goto probablyFound;
if (offset >= 1)
{
offset -= 1;
if (!STRNCMP(line + offset, "for", 3))
goto probablyFound;
if (offset >= 2)
{
offset -= 2;
if (!STRNCMP(line + offset, "while", 5))
goto probablyFound;
}
}
return 0;
probablyFound:
if (!offset || !vim_isIDc(line[offset - 1]))
{
*poffset = offset;
return 1;
}
return 0;
}
/*
* Return TRUE if we are at the end of a do-while.
* do
* nothing;
* while (foo
* && bar); <-- here
* Adjust the cursor to the line with "while".
*/
static int
cin_iswhileofdo_end(int terminated)
{
char_u *line;
char_u *p;
char_u *s;
pos_T *trypos;
int i;
if (terminated != ';') // there must be a ';' at the end
return FALSE;
p = line = ml_get_curline();
while (*p != NUL)
{
p = cin_skipcomment(p);
if (*p == ')')
{
s = skipwhite(p + 1);
if (*s == ';' && cin_nocode(s + 1))
{
// Found ");" at end of the line, now check there is "while"
// before the matching '('. XXX
i = (int)(p - line);
curwin->w_cursor.col = i;
trypos = find_match_paren(curbuf->b_ind_maxparen);
if (trypos != NULL)
{
s = cin_skipcomment(ml_get(trypos->lnum));
if (*s == '}') // accept "} while (cond);"
s = cin_skipcomment(s + 1);
if (cin_starts_with(s, "while"))
{
curwin->w_cursor.lnum = trypos->lnum;
return TRUE;
}
}
// Searching may have made "line" invalid, get it again.
line = ml_get_curline();
p = line + i;
}
}
if (*p != NUL)
++p;
}
return FALSE;
}
static int
cin_isbreak(char_u *p)
{
return (STRNCMP(p, "break", 5) == 0 && !vim_isIDc(p[5]));
}
/*
* Find the position of a C++ base-class declaration or
* constructor-initialization. eg:
*
* class MyClass :
* baseClass <-- here
* class MyClass : public baseClass,
* anotherBaseClass <-- here (should probably lineup ??)
* MyClass::MyClass(...) :
* baseClass(...) <-- here (constructor-initialization)
*
* This is a lot of guessing. Watch out for "cond ? func() : foo".
*/
static int
cin_is_cpp_baseclass(
cpp_baseclass_cache_T *cached) // input and output
{
lpos_T *pos = &cached->lpos; // find position
char_u *s;
int class_or_struct, lookfor_ctor_init, cpp_base_class;
linenr_T lnum = curwin->w_cursor.lnum;
char_u *line = ml_get_curline();
if (pos->lnum <= lnum)
return cached->found; // Use the cached result
pos->col = 0;
s = skipwhite(line);
if (*s == '#') // skip #define FOO x ? (x) : x
return FALSE;
s = cin_skipcomment(s);
if (*s == NUL)
return FALSE;
cpp_base_class = lookfor_ctor_init = class_or_struct = FALSE;
// Search for a line starting with '#', empty, ending in ';' or containing
// '{' or '}' and start below it. This handles the following situations:
// a = cond ?
// func() :
// asdf;
// func::foo()
// : something
// {}
// Foo::Foo (int one, int two)
// : something(4),
// somethingelse(3)
// {}
while (lnum > 1)
{
line = ml_get(lnum - 1);
s = skipwhite(line);
if (*s == '#' || *s == NUL)
break;
while (*s != NUL)
{
s = cin_skipcomment(s);
if (*s == '{' || *s == '}'
|| (*s == ';' && cin_nocode(s + 1)))
break;
if (*s != NUL)
++s;
}
if (*s != NUL)
break;
--lnum;
}
pos->lnum = lnum;
line = ml_get(lnum);
s = line;
for (;;)
{
if (*s == NUL)
{
if (lnum == curwin->w_cursor.lnum)
break;
// Continue in the cursor line.
line = ml_get(++lnum);
s = line;
}
if (s == line)
{
// don't recognize "case (foo):" as a baseclass
if (cin_iscase(s, FALSE))
break;
s = cin_skipcomment(line);
if (*s == NUL)
continue;
}
if (s[0] == '"' || (s[0] == 'R' && s[1] == '"'))
s = skip_string(s) + 1;
else if (s[0] == ':')
{
if (s[1] == ':')
{
// skip double colon. It can't be a constructor
// initialization any more
lookfor_ctor_init = FALSE;
s = cin_skipcomment(s + 2);
}
else if (lookfor_ctor_init || class_or_struct)
{
// we have something found, that looks like the start of
// cpp-base-class-declaration or constructor-initialization
cpp_base_class = TRUE;
lookfor_ctor_init = class_or_struct = FALSE;
pos->col = 0;
s = cin_skipcomment(s + 1);
}
else
s = cin_skipcomment(s + 1);
}
else if ((STRNCMP(s, "class", 5) == 0 && !vim_isIDc(s[5]))
|| (STRNCMP(s, "struct", 6) == 0 && !vim_isIDc(s[6])))
{
class_or_struct = TRUE;
lookfor_ctor_init = FALSE;
if (*s == 'c')
s = cin_skipcomment(s + 5);
else
s = cin_skipcomment(s + 6);
}
else
{
if (s[0] == '{' || s[0] == '}' || s[0] == ';')
{
cpp_base_class = lookfor_ctor_init = class_or_struct = FALSE;
}
else if (s[0] == ')')
{
// Constructor-initialization is assumed if we come across
// something like "):"
class_or_struct = FALSE;
lookfor_ctor_init = TRUE;
}
else if (s[0] == '?')
{
// Avoid seeing '() :' after '?' as constructor init.
return FALSE;
}
else if (!vim_isIDc(s[0]))
{
// if it is not an identifier, we are wrong
class_or_struct = FALSE;
lookfor_ctor_init = FALSE;
}
else if (pos->col == 0)
{
// it can't be a constructor-initialization any more
lookfor_ctor_init = FALSE;
// the first statement starts here: lineup with this one...
if (cpp_base_class)
pos->col = (colnr_T)(s - line);
}
// When the line ends in a comma don't align with it.
if (lnum == curwin->w_cursor.lnum && *s == ',' && cin_nocode(s + 1))
pos->col = 0;
s = cin_skipcomment(s + 1);
}
}
cached->found = cpp_base_class;
if (cpp_base_class)
pos->lnum = lnum;
return cpp_base_class;
}
static int
get_baseclass_amount(int col)
{
int amount;
colnr_T vcol;
pos_T *trypos;
if (col == 0)
{
amount = get_indent();
if (find_last_paren(ml_get_curline(), '(', ')')
&& (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL)
amount = get_indent_lnum(trypos->lnum); // XXX
if (!cin_ends_in(ml_get_curline(), (char_u *)",", NULL))
amount += curbuf->b_ind_cpp_baseclass;
}
else
{
curwin->w_cursor.col = col;
getvcol(curwin, &curwin->w_cursor, &vcol, NULL, NULL);
amount = (int)vcol;
}
if (amount < curbuf->b_ind_cpp_baseclass)
amount = curbuf->b_ind_cpp_baseclass;
return amount;
}
/*
* Find the '{' at the start of the block we are in.
* Return NULL if no match found.
* Ignore a '{' that is in a comment, makes indenting the next three lines
* work.
*/
// foo()
// {
// }
static pos_T *
find_start_brace(void) // XXX
{
pos_T cursor_save;
pos_T *trypos;
pos_T *pos;
static pos_T pos_copy;
cursor_save = curwin->w_cursor;
while ((trypos = findmatchlimit(NULL, '{', FM_BLOCKSTOP, 0)) != NULL)
{
pos_copy = *trypos; // copy pos_T, next findmatch will change it
trypos = &pos_copy;
curwin->w_cursor = *trypos;
pos = NULL;
// ignore the { if it's in a // or / * * / comment
if ((colnr_T)cin_skip2pos(trypos) == trypos->col
&& (pos = ind_find_start_CORS(NULL)) == NULL) // XXX
break;
if (pos != NULL)
curwin->w_cursor = *pos;
}
curwin->w_cursor = cursor_save;
return trypos;
}
/*
* Find the matching '(', ignoring it if it is in a comment or before an
* unmatched {.
* Return NULL if no match found.
*/
static pos_T *
find_match_paren_after_brace (int ind_maxparen) // XXX
{
pos_T *trypos = find_match_paren(ind_maxparen);
if (trypos == NULL)
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;
}
/*
* 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;
vimlong_T n;
int divider;
int fraction = 0;
int sw;
long t = get_sw_value(buf);
// needed for cino-(, it will be multiplied by 2 again
if (t > INT_MAX / 2)
sw = INT_MAX / 2;
else
sw = (int)t;
// 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 parenthesis.
buf->b_ind_unclosed = sw * 2;
// Spaces from the indent of the line with an unclosed parenthesis, which
// itself is also unclosed.
buf->b_ind_unclosed2 = sw;
// Suppress ignoring spaces from the indent of a line starting with an
// unclosed parenthesis.
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 parenthesis.
buf->b_ind_unclosed_whiteok = 0;
// Indent a closing parenthesis under the line start of the matching
// opening parenthesis.
buf->b_ind_matching_paren = 0;
// Indent a closing parenthesis under the previous line.
buf->b_ind_paren_prev = 0;
// Extra indent for comments.
buf->b_ind_comment = 0;
// Spaces from the comment opener when there is nothing after it.
buf->b_ind_in_comment = 3;
// Boolean: if non-zero, use b_ind_in_comment even if there is something
// after the comment opener.
buf->b_ind_in_comment2 = 0;
// Max lines to search for an open paren.
buf->b_ind_maxparen = 20;
// Max lines to search for an open comment.
buf->b_ind_maxcomment = 70;
// Handle braces for java code.
buf->b_ind_java = 0;
// Not to confuse JS object properties with labels.
buf->b_ind_js = 0;
// Handle blocked cases correctly.
buf->b_ind_keep_case_label = 0;
// Handle C++ namespace.
buf->b_ind_cpp_namespace = 0;
// Handle continuation lines containing conditions of if (), for () and
// while ().
buf->b_ind_if_for_while = 0;
// indentation for # comments
buf->b_ind_hash_comment = 0;
// Handle C++ extern "C" or "C++"
buf->b_ind_cpp_extern_c = 0;
// Handle C #pragma directives
buf->b_ind_pragma = 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 += ((vimlong_T)sw * fraction + divider / 2) / divider;
}
++p;
}
if (l[1] == '-')
n = -n;
n = trim_to_int(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 = (int)n; break;
case 'e': buf->b_ind_open_imag = (int)n; break;
case 'n': buf->b_ind_no_brace = (int)n; break;
case 'f': buf->b_ind_first_open = (int)n; break;
case '{': buf->b_ind_open_extra = (int)n; break;
case '}': buf->b_ind_close_extra = (int)n; break;
case '^': buf->b_ind_open_left_imag = (int)n; break;
case 'L': buf->b_ind_jump_label = (int)n; break;
case ':': buf->b_ind_case = (int)n; break;
case '=': buf->b_ind_case_code = (int)n; break;
case 'b': buf->b_ind_case_break = (int)n; break;
case 'p': buf->b_ind_param = (int)n; break;
case 't': buf->b_ind_func_type = (int)n; break;
case '/': buf->b_ind_comment = (int)n; break;
case 'c': buf->b_ind_in_comment = (int)n; break;
case 'C': buf->b_ind_in_comment2 = (int)n; break;
case 'i': buf->b_ind_cpp_baseclass = (int)n; break;
case '+': buf->b_ind_continuation = (int)n; break;
case '(': buf->b_ind_unclosed = (int)n; break;
case 'u': buf->b_ind_unclosed2 = (int)n; break;
case 'U': buf->b_ind_unclosed_noignore = (int)n; break;
case 'W': buf->b_ind_unclosed_wrapped = (int)n; break;
case 'w': buf->b_ind_unclosed_whiteok = (int)n; break;
case 'm': buf->b_ind_matching_paren = (int)n; break;
case 'M': buf->b_ind_paren_prev = (int)n; break;
case ')': buf->b_ind_maxparen = (int)n; break;
case '*': buf->b_ind_maxcomment = (int)n; break;
case 'g': buf->b_ind_scopedecl = (int)n; break;
case 'h': buf->b_ind_scopedecl_code = (int)n; break;
case 'j': buf->b_ind_java = (int)n; break;
case 'J': buf->b_ind_js = (int)n; break;
case 'l': buf->b_ind_keep_case_label = (int)n; break;
case '#': buf->b_ind_hash_comment = (int)n; break;
case 'N': buf->b_ind_cpp_namespace = (int)n; break;
case 'k': buf->b_ind_if_for_while = (int)n; break;
case 'E': buf->b_ind_cpp_extern_c = (int)n; break;
case 'P': buf->b_ind_pragma = (int)n; break;
}
if (*p == ',')
++p;
}
}
static int
find_match(int lookfor, linenr_T ourscope)
{
char_u *look;
pos_T *theirscope;
char_u *mightbeif;
int elselevel;
int whilelevel;
if (lookfor == LOOKFOR_IF)
{
elselevel = 1;
whilelevel = 0;
}
else
{
elselevel = 0;
whilelevel = 1;
}
curwin->w_cursor.col = 0;
while (curwin->w_cursor.lnum > ourscope + 1)
{
curwin->w_cursor.lnum--;
curwin->w_cursor.col = 0;
look = cin_skipcomment(ml_get_curline());
if (cin_iselse(look)
|| cin_isif(look)
|| cin_isdo(look) // XXX
|| cin_iswhileofdo(look, curwin->w_cursor.lnum))
{
// if we've gone outside the braces entirely,
// we must be out of scope...
theirscope = find_start_brace(); // XXX
if (theirscope == NULL)
break;
// and if the brace enclosing this is further
// back than the one enclosing the else, we're
// out of luck too.
if (theirscope->lnum < ourscope)
break;
// and if they're enclosed in a *deeper* brace,
// then we can ignore it because it's in a
// different scope...
if (theirscope->lnum > ourscope)
continue;
// if it was an "else" (that's not an "else if")
// then we need to go back to another if, so
// increment elselevel
look = cin_skipcomment(ml_get_curline());
if (cin_iselse(look))
{
mightbeif = cin_skipcomment(look + 4);
if (!cin_isif(mightbeif))
++elselevel;
continue;
}
// if it was a "while" then we need to go back to
// another "do", so increment whilelevel. XXX
if (cin_iswhileofdo(look, curwin->w_cursor.lnum))
{
++whilelevel;
continue;
}
// If it's an "if" decrement elselevel
look = cin_skipcomment(ml_get_curline());
if (cin_isif(look))
{
elselevel--;
// When looking for an "if" ignore "while"s that
// get in the way.
if (elselevel == 0 && lookfor == LOOKFOR_IF)
whilelevel = 0;
}
// If it's a "do" decrement whilelevel
if (cin_isdo(look))
whilelevel--;
// if we've used up all the elses, then
// this must be the if that we want!
// match the indent level of that if.
if (elselevel <= 0 && whilelevel <= 0)
return OK;
}
}
return FAIL;
}
/*
* Return the desired indent for C code.
* Return -1 if the indent should be left alone (inside a raw string).
*/
int
get_c_indent(void)
{
pos_T cur_curpos;
int amount;
int scope_amount;
int cur_amount = MAXCOL;
colnr_T col;
char_u *theline;
char_u *linecopy;
pos_T *trypos;
pos_T *comment_pos;
pos_T *tryposBrace = NULL;
pos_T tryposCopy;
pos_T our_paren_pos;
char_u *start;
int start_brace;
#define BRACE_IN_COL0 1 // '{' is in column 0
#define BRACE_AT_START 2 // '{' is at start of line
#define BRACE_AT_END 3 // '{' is at end of line
linenr_T ourscope;
char_u *l;
char_u *look;
char_u terminated;
int lookfor;
int whilelevel;
linenr_T lnum;
int n;
int iscase;
int lookfor_break;
int lookfor_cpp_namespace = FALSE;
int cont_amount = 0; // amount for continuation line
int original_line_islabel;
int added_to_amount = 0;
int js_cur_has_key = 0;
linenr_T raw_string_start = 0;
cpp_baseclass_cache_T cache_cpp_baseclass = { FALSE, { MAXLNUM, 0 } };
// make a copy, value is changed below
int ind_continuation = curbuf->b_ind_continuation;
// remember where the cursor was when we started
cur_curpos = curwin->w_cursor;
// if we are at line 1 zero indent is fine, right?
if (cur_curpos.lnum == 1)
return 0;
// Get a copy of the current contents of the line.
// This is required, because only the most recent line obtained with
// ml_get is valid!
linecopy = vim_strsave(ml_get(cur_curpos.lnum));
if (linecopy == NULL)
return 0;
// In insert mode and the cursor is on a ')' truncate the line at the
// cursor position. We don't want to line up with the matching '(' when
// inserting new stuff.
// For unknown reasons the cursor might be past the end of the line, thus
// check for that.
if ((State & MODE_INSERT)
&& curwin->w_cursor.col < (colnr_T)STRLEN(linecopy)
&& linecopy[curwin->w_cursor.col] == ')')
linecopy[curwin->w_cursor.col] = NUL;
theline = skipwhite(linecopy);
// move the cursor to the start of the line
curwin->w_cursor.col = 0;
original_line_islabel = cin_islabel(); // XXX
// If we are inside a raw string don't change the indent.
// Ignore a raw string inside a comment.
comment_pos = ind_find_start_comment();
if (comment_pos != NULL)
{
// findmatchlimit() static pos is overwritten, make a copy
tryposCopy = *comment_pos;
comment_pos = &tryposCopy;
}
trypos = find_start_rawstring(curbuf->b_ind_maxcomment);
if (trypos != NULL && (comment_pos == NULL
|| LT_POS(*trypos, *comment_pos)))
{
amount = -1;
goto laterend;
}
// #defines and so on go at the left when included in 'cinkeys',
// excluding pragmas when customized in 'cinoptions'
if (*theline == '#' && (*linecopy == '#' || in_cinkeys('#', ' ', TRUE)))
{
char_u *directive = skipwhite(theline + 1);
if (curbuf->b_ind_pragma == 0 || STRNCMP(directive, "pragma", 6) != 0)
{
amount = curbuf->b_ind_hash_comment;
goto theend;
}
}
// Is it a non-case label? Then that goes at the left margin too unless:
// - JS flag is set.
// - 'L' item has a positive value.
if (original_line_islabel && !curbuf->b_ind_js
&& curbuf->b_ind_jump_label < 0)
{
amount = 0;
goto theend;
}
// If we're inside a "//" comment and there is a "//" comment in a
// previous line, lineup with that one.
if (cin_islinecomment(theline))
{
pos_T linecomment_pos;
trypos = find_line_comment(); // XXX
if (trypos == NULL && curwin->w_cursor.lnum > 1)
{
// There may be a statement before the comment, search from the end
// of the line for a comment start.
linecomment_pos.col =
check_linecomment(ml_get(curwin->w_cursor.lnum - 1));
if (linecomment_pos.col != MAXCOL)
{
trypos = &linecomment_pos;
trypos->lnum = curwin->w_cursor.lnum - 1;
}
}
if (trypos != NULL)
{
// find how indented the line beginning the comment is
getvcol(curwin, trypos, &col, NULL, NULL);
amount = col;
goto theend;
}
}
// If we're inside a comment and not looking at the start of the
// comment, try using the 'comments' option.
if (!cin_iscomment(theline) && comment_pos != NULL) // XXX
{
int lead_start_len = 2;
int lead_middle_len = 1;
char_u lead_start[COM_MAX_LEN]; // start-comment string
char_u lead_middle[COM_MAX_LEN]; // middle-comment string
char_u lead_end[COM_MAX_LEN]; // end-comment string
char_u *p;
int start_align = 0;
int start_off = 0;
int done = FALSE;
// find how indented the line beginning the comment is
getvcol(curwin, comment_pos, &col, NULL, NULL);
amount = col;
*lead_start = NUL;
*lead_middle = NUL;
p = curbuf->b_p_com;
while (*p != NUL)
{
int align = 0;
int off = 0;
int what = 0;
while (*p != NUL && *p != ':')
{
if (*p == COM_START || *p == COM_END || *p == COM_MIDDLE)
what = *p++;
else if (*p == COM_LEFT || *p == COM_RIGHT)
align = *p++;
else if (VIM_ISDIGIT(*p) || *p == '-')
off = getdigits(&p);
else
++p;
}
if (*p == ':')
++p;
(void)copy_option_part(&p, lead_end, COM_MAX_LEN, ",");
if (what == COM_START)
{
STRCPY(lead_start, lead_end);
lead_start_len = (int)STRLEN(lead_start);
start_off = off;
start_align = align;
}
else if (what == COM_MIDDLE)
{
STRCPY(lead_middle, lead_end);
lead_middle_len = (int)STRLEN(lead_middle);
}
else if (what == COM_END)
{
// If our line starts with the middle comment string, line it
// up with the comment opener per the 'comments' option.
if (STRNCMP(theline, lead_middle, lead_middle_len) == 0
&& STRNCMP(theline, lead_end, STRLEN(lead_end)) != 0)
{
done = TRUE;
if (curwin->w_cursor.lnum > 1)
{
// If the start comment string matches in the previous
// line, use the indent of that line plus offset. If
// the middle comment string matches in the previous
// line, use the indent of that line. XXX
look = skipwhite(ml_get(curwin->w_cursor.lnum - 1));
if (STRNCMP(look, lead_start, lead_start_len) == 0)
amount = get_indent_lnum(curwin->w_cursor.lnum - 1);
else if (STRNCMP(look, lead_middle,
lead_middle_len) == 0)
{
amount = get_indent_lnum(curwin->w_cursor.lnum - 1);
break;
}
// If the start comment string doesn't match with the
// start of the comment, skip this entry. XXX
else if (STRNCMP(ml_get(comment_pos->lnum)
+ comment_pos->col,
lead_start, lead_start_len) != 0)
continue;
}
if (start_off != 0)
amount += start_off;
else if (start_align == COM_RIGHT)
amount += vim_strsize(lead_start)
- vim_strsize(lead_middle);
break;
}
// If our line starts with the end comment string, line it up
// with the middle comment
if (STRNCMP(theline, lead_middle, lead_middle_len) != 0
&& STRNCMP(theline, lead_end, STRLEN(lead_end)) == 0)
{
amount = get_indent_lnum(curwin->w_cursor.lnum - 1);
// XXX
if (off != 0)
amount += off;
else if (align == COM_RIGHT)
amount += vim_strsize(lead_start)
- vim_strsize(lead_middle);
done = TRUE;
break;
}
}
}
// If our line starts with an asterisk, line up with the
// asterisk in the comment opener; otherwise, line up
// with the first character of the comment text.
if (done)
;
else if (theline[0] == '*')
amount += 1;
else
{
// If we are more than one line away from the comment opener, take
// the indent of the previous non-empty line. If 'cino' has "CO"
// and we are just below the comment opener and there are any
// white characters after it line up with the text after it;
// otherwise, add the amount specified by "c" in 'cino'
amount = -1;
for (lnum = cur_curpos.lnum - 1; lnum > comment_pos->lnum; --lnum)
{
if (linewhite(lnum)) // skip blank lines
continue;
amount = get_indent_lnum(lnum); // XXX
break;
}
if (amount == -1) // use the comment opener
{
if (!curbuf->b_ind_in_comment2)
{
start = ml_get(comment_pos->lnum);
look = start + comment_pos->col + 2; // skip / and *
if (*look != NUL) // if something after it
comment_pos->col = (colnr_T)(skipwhite(look) - start);
}
getvcol(curwin, comment_pos, &col, NULL, NULL);
amount = col;
if (curbuf->b_ind_in_comment2 || *look == NUL)
amount += curbuf->b_ind_in_comment;
}
}
goto theend;
}
// Are we looking at a ']' that has a match?
if (*skipwhite(theline) == ']'
&& (trypos = find_match_char('[', curbuf->b_ind_maxparen)) != NULL)
{
// align with the line containing the '['.
amount = get_indent_lnum(trypos->lnum);
goto theend;
}
// Are we inside parentheses or braces? XXX
if (((trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL
&& curbuf->b_ind_java == 0)
|| (tryposBrace = find_start_brace()) != NULL
|| trypos != NULL)
{
if (trypos != NULL && tryposBrace != NULL)
{
// Both an unmatched '(' and '{' is found. Use the one which is
// closer to the current cursor position, set the other to NULL.
if (trypos->lnum != tryposBrace->lnum
? trypos->lnum < tryposBrace->lnum
: trypos->col < tryposBrace->col)
trypos = NULL;
else
tryposBrace = NULL;
}
if (trypos != NULL)
{
// If the matching paren is more than one line away, use the indent of
// a previous non-empty line that matches the same paren.
if (theline[0] == ')' && curbuf->b_ind_paren_prev)
{
// Line up with the start of the matching paren line.
amount = get_indent_lnum(curwin->w_cursor.lnum - 1); // XXX
}
else
{
amount = -1;
our_paren_pos = *trypos;
for (lnum = cur_curpos.lnum - 1; lnum > our_paren_pos.lnum; --lnum)
{
l = skipwhite(ml_get(lnum));
if (cin_nocode(l)) // skip comment lines
continue;
if (cin_ispreproc_cont(&l, &lnum, &amount))
continue; // ignore #define, #if, etc.
curwin->w_cursor.lnum = lnum;
// Skip a comment or raw string. XXX
if ((trypos = ind_find_start_CORS(NULL)) != NULL)
{
lnum = trypos->lnum + 1;
continue;
}
// XXX
if ((trypos = find_match_paren(
corr_ind_maxparen(&cur_curpos))) != NULL
&& trypos->lnum == our_paren_pos.lnum
&& trypos->col == our_paren_pos.col)
{
amount = get_indent_lnum(lnum); // XXX
if (theline[0] == ')')
{
if (our_paren_pos.lnum != lnum
&& cur_amount > amount)
cur_amount = amount;
amount = -1;
}
break;
}
}
}
// Line up with line where the matching paren is. XXX
// If the line starts with a '(' or the indent for unclosed
// parentheses is zero, line up with the unclosed parentheses.
if (amount == -1)
{
int ignore_paren_col = 0;
int is_if_for_while = 0;
if (curbuf->b_ind_if_for_while)
{
// Look for the outermost opening parenthesis on this line
// and check whether it belongs to an "if", "for" or "while".
pos_T cursor_save = curwin->w_cursor;
pos_T outermost;
char_u *line;
trypos = &our_paren_pos;
do {
outermost = *trypos;
curwin->w_cursor.lnum = outermost.lnum;
curwin->w_cursor.col = outermost.col;
trypos = find_match_paren(curbuf->b_ind_maxparen);
} while (trypos && trypos->lnum == outermost.lnum);
curwin->w_cursor = cursor_save;
line = ml_get(outermost.lnum);
is_if_for_while =
cin_is_if_for_while_before_offset(line, &outermost.col);
}
amount = skip_label(our_paren_pos.lnum, &look);
look = skipwhite(look);
if (*look == '(')
{
linenr_T save_lnum = curwin->w_cursor.lnum;
char_u *line;
int look_col;
// Ignore a '(' in front of the line that has a match before
// our matching '('.
curwin->w_cursor.lnum = our_paren_pos.lnum;
line = ml_get_curline();
look_col = (int)(look - line);
curwin->w_cursor.col = look_col + 1;
if ((trypos = findmatchlimit(NULL, ')', 0,
curbuf->b_ind_maxparen))
!= NULL
&& trypos->lnum == our_paren_pos.lnum
&& trypos->col < our_paren_pos.col)
ignore_paren_col = trypos->col + 1;
curwin->w_cursor.lnum = save_lnum;
look = ml_get(our_paren_pos.lnum) + look_col;
}
if (theline[0] == ')' || (curbuf->b_ind_unclosed == 0
&& is_if_for_while == 0)
|| (!curbuf->b_ind_unclosed_noignore && *look == '('
&& ignore_paren_col == 0))
{
// If we're looking at a close paren, line up right there;
// otherwise, line up with the next (non-white) character.
// When b_ind_unclosed_wrapped is set and the matching paren is
// the last nonwhite character of the line, use either the
// indent of the current line or the indentation of the next
// outer paren and add b_ind_unclosed_wrapped (for very long
// lines).
if (theline[0] != ')')
{
cur_amount = MAXCOL;
l = ml_get(our_paren_pos.lnum);
if (curbuf->b_ind_unclosed_wrapped
&& cin_ends_in(l, (char_u *)"(", NULL))
{
// look for opening unmatched paren, indent one level
// for each additional level
n = 1;
for (col = 0; col < our_paren_pos.col; ++col)
{
switch (l[col])
{
case '(':
case '{': ++n;
break;
case ')':
case '}': if (n > 1)
--n;
break;
}
}
our_paren_pos.col = 0;
amount += n * curbuf->b_ind_unclosed_wrapped;
}
else if (curbuf->b_ind_unclosed_whiteok)
our_paren_pos.col++;
else
{
col = our_paren_pos.col + 1;
while (VIM_ISWHITE(l[col]))
col++;
if (l[col] != NUL) // In case of trailing space
our_paren_pos.col = col;
else
our_paren_pos.col++;
}
}
// Find how indented the paren is, or the character after it
// if we did the above "if".
if (our_paren_pos.col > 0)
{
getvcol(curwin, &our_paren_pos, &col, NULL, NULL);
if (cur_amount > (int)col)
cur_amount = col;
}
}
if (theline[0] == ')' && curbuf->b_ind_matching_paren)
{
// Line up with the start of the matching paren line.
}
else if ((curbuf->b_ind_unclosed == 0 && is_if_for_while == 0)
|| (!curbuf->b_ind_unclosed_noignore
&& *look == '(' && ignore_paren_col == 0))
{
if (cur_amount != MAXCOL)
amount = cur_amount;
}
else
{
// Add b_ind_unclosed2 for each '(' before our matching one,
// but ignore (void) before the line (ignore_paren_col).
col = our_paren_pos.col;
while ((int)our_paren_pos.col > ignore_paren_col)
{
--our_paren_pos.col;
switch (*ml_get_pos(&our_paren_pos))
{
case '(': amount += curbuf->b_ind_unclosed2;
col = our_paren_pos.col;
break;
case ')': amount -= curbuf->b_ind_unclosed2;
col = MAXCOL;
break;
}
}
// Use b_ind_unclosed once, when the first '(' is not inside
// braces
if (col == MAXCOL)
amount += curbuf->b_ind_unclosed;
else
{
curwin->w_cursor.lnum = our_paren_pos.lnum;
curwin->w_cursor.col = col;
if (find_match_paren_after_brace(curbuf->b_ind_maxparen)
!= NULL)
amount += curbuf->b_ind_unclosed2;
else
{
if (is_if_for_while)
amount += curbuf->b_ind_if_for_while;
else
amount += curbuf->b_ind_unclosed;
}
}
// For a line starting with ')' use the minimum of the two
// positions, to avoid giving it more indent than the previous
// lines:
// func_long_name( if (x
// arg && yy
// ) ^ not here ) ^ not here
if (cur_amount < amount)
amount = cur_amount;
}
}
// add extra indent for a comment
if (cin_iscomment(theline))
amount += curbuf->b_ind_comment;
}
else
{
// We are inside braces, there is a { before this line at the position
// stored in tryposBrace.
// Make a copy of tryposBrace, it may point to pos_copy inside
// find_start_brace(), which may be changed somewhere.
tryposCopy = *tryposBrace;
tryposBrace = &tryposCopy;
trypos = tryposBrace;
ourscope = trypos->lnum;
start = ml_get(ourscope);
// Now figure out how indented the line is in general.
// If the brace was at the start of the line, we use that;
// otherwise, check out the indentation of the line as
// a whole and then add the "imaginary indent" to that.
look = skipwhite(start);
if (*look == '{')
{
getvcol(curwin, trypos, &col, NULL, NULL);
amount = col;
if (*start == '{')
start_brace = BRACE_IN_COL0;
else
start_brace = BRACE_AT_START;
}
else
{
// That opening brace might have been on a continuation
// line. if so, find the start of the line.
curwin->w_cursor.lnum = ourscope;
// Position the cursor over the rightmost paren, so that
// matching it will take us back to the start of the line.
lnum = ourscope;
if (find_last_paren(start, '(', ')')
&& (trypos = find_match_paren(curbuf->b_ind_maxparen))
!= NULL)
lnum = trypos->lnum;
// It could have been something like
// case 1: if (asdf &&
// condition) {
// }
if ((curbuf->b_ind_js || curbuf->b_ind_keep_case_label)
&& cin_iscase(skipwhite(ml_get_curline()), FALSE))
amount = get_indent();
else if (curbuf->b_ind_js)
amount = get_indent_lnum(lnum);
else
amount = skip_label(lnum, &l);
start_brace = BRACE_AT_END;
}
// For Javascript check if the line starts with "key:".
if (curbuf->b_ind_js)
js_cur_has_key = cin_has_js_key(theline);
// If we're looking at a closing brace, that's where
// we want to be. otherwise, add the amount of room
// that an indent is supposed to be.
if (theline[0] == '}')
{
// they may want closing braces to line up with something
// other than the open brace. indulge them, if so.
amount += curbuf->b_ind_close_extra;
}
else
{
// If we're looking at an "else", try to find an "if"
// to match it with.
// If we're looking at a "while", try to find a "do"
// to match it with.
lookfor = LOOKFOR_INITIAL;
if (cin_iselse(theline))
lookfor = LOOKFOR_IF;
else if (cin_iswhileofdo(theline, cur_curpos.lnum)) // XXX
lookfor = LOOKFOR_DO;
if (lookfor != LOOKFOR_INITIAL)
{
curwin->w_cursor.lnum = cur_curpos.lnum;
if (find_match(lookfor, ourscope) == OK)
{
amount = get_indent(); // XXX
goto theend;
}
}
// We get here if we are not on an "while-of-do" or "else" (or
// failed to find a matching "if").
// Search backwards for something to line up with.
// First set amount for when we don't find anything.
// if the '{' is _really_ at the left margin, use the imaginary
// location of a left-margin brace. Otherwise, correct the
// location for b_ind_open_extra.
if (start_brace == BRACE_IN_COL0) // '{' is in column 0
{
amount = curbuf->b_ind_open_left_imag;
lookfor_cpp_namespace = TRUE;
}
else if (start_brace == BRACE_AT_START &&
lookfor_cpp_namespace) // '{' is at start
{
lookfor_cpp_namespace = TRUE;
}
else
{
if (start_brace == BRACE_AT_END) // '{' is at end of line
{
amount += curbuf->b_ind_open_imag;
l = skipwhite(ml_get_curline());
if (cin_is_cpp_namespace(l))
amount += curbuf->b_ind_cpp_namespace;
else if (cin_is_cpp_extern_c(l))
amount += curbuf->b_ind_cpp_extern_c;
}
else
{
// Compensate for adding b_ind_open_extra later.
amount -= curbuf->b_ind_open_extra;
if (amount < 0)
amount = 0;
}
}
lookfor_break = FALSE;
if (cin_iscase(theline, FALSE)) // it's a switch() label
{
lookfor = LOOKFOR_CASE; // find a previous switch() label
amount += curbuf->b_ind_case;
}
else if (cin_isscopedecl(theline)) // private:, ...
{
lookfor = LOOKFOR_SCOPEDECL; // class decl is this block
amount += curbuf->b_ind_scopedecl;
}
else
{
if (curbuf->b_ind_case_break && cin_isbreak(theline))
// break; ...
lookfor_break = TRUE;
lookfor = LOOKFOR_INITIAL;
// b_ind_level from start of block
amount += curbuf->b_ind_level;
}
scope_amount = amount;
whilelevel = 0;
// Search backwards. If we find something we recognize, line up
// with that.
//
// If we're looking at an open brace, indent
// the usual amount relative to the conditional
// that opens the block.
curwin->w_cursor = cur_curpos;
for (;;)
{
curwin->w_cursor.lnum--;
curwin->w_cursor.col = 0;
// If we went all the way back to the start of our scope, line
// up with it.
if (curwin->w_cursor.lnum <= ourscope)
{
// We reached end of scope:
// If looking for 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;
}
// If we're in a comment or raw string now, skip to
// the start of it.
trypos = ind_find_start_CORS(NULL);
if (trypos != NULL)
{
curwin->w_cursor.lnum = trypos->lnum + 1;
curwin->w_cursor.col = 0;
continue;
}
l = ml_get_curline();
// Skip preprocessor directives and blank lines.
if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum,
&amount))
continue;
if (cin_nocode(l))
continue;
terminated = cin_isterminated(l, FALSE, TRUE);
// If we are at top level and the line looks like a
// function declaration, we are done
// (it's a variable declaration).
if (start_brace != BRACE_IN_COL0
|| !cin_isfuncdecl(&l, curwin->w_cursor.lnum, 0))
{
// if the line is terminated with another ','
// it is a continued variable initialization.
// don't add extra indent.
// TODO: does not work, if a function
// declaration is split over multiple lines:
// cin_isfuncdecl returns FALSE then.
if (terminated == ',')
break;
// if it 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
&& lookfor != LOOKFOR_COMMA)
{
amount = scope_amount;
if (theline[0] == '{')
{
amount += curbuf->b_ind_open_extra;
added_to_amount = curbuf->b_ind_open_extra;
}
}
if (lookfor_cpp_namespace)
{
// Looking for C++ namespace, need to look further
// back.
if (curwin->w_cursor.lnum == ourscope)
continue;
if (curwin->w_cursor.lnum == 0
|| curwin->w_cursor.lnum
< ourscope - FIND_NAMESPACE_LIM)
break;
// If we're in a comment or raw string now, skip
// to the start of it.
trypos = ind_find_start_CORS(NULL);
if (trypos != NULL)
{
curwin->w_cursor.lnum = trypos->lnum + 1;
curwin->w_cursor.col = 0;
continue;
}
l = ml_get_curline();
// Skip preprocessor directives and blank lines.
if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum,
&amount))
continue;
// Finally the actual check for "namespace".
if (cin_is_cpp_namespace(l))
{
amount += curbuf->b_ind_cpp_namespace
- added_to_amount;
break;
}
else if (cin_is_cpp_extern_c(l))
{
amount += curbuf->b_ind_cpp_extern_c
- added_to_amount;
break;
}
if (cin_nocode(l))
continue;
}
}
break;
}
// If we're in a comment or raw string now, skip to the start
// of it. XXX
if ((trypos = ind_find_start_CORS(&raw_string_start)) != NULL)
{
curwin->w_cursor.lnum = trypos->lnum + 1;
curwin->w_cursor.col = 0;
continue;
}
l = ml_get_curline();
// If this is a switch() label, may line up relative to that.
// If this is a C++ scope declaration, do the same.
iscase = cin_iscase(l, FALSE);
if (iscase || cin_isscopedecl(l))
{
// we are only looking for cpp base class
// declaration/initialization any longer
if (lookfor == LOOKFOR_CPP_BASECLASS)
break;
// When looking for a "do" we are not interested in
// labels.
if (whilelevel > 0)
continue;
// case xx:
// c = 99 + <- this indent plus continuation
//-> here;
if (lookfor == LOOKFOR_UNTERM
|| lookfor == LOOKFOR_ENUM_OR_INIT)
{
if (cont_amount > 0)
amount = cont_amount;
else
amount += ind_continuation;
break;
}
// case xx: <- line up with this case
// x = 333;
// case yy:
if ( (iscase && lookfor == LOOKFOR_CASE)
|| (iscase && lookfor_break)
|| (!iscase && lookfor == LOOKFOR_SCOPEDECL))
{
// Check that this case label is not for another
// switch() XXX
if ((trypos = find_start_brace()) == NULL
|| trypos->lnum == ourscope)
{
amount = get_indent(); // XXX
break;
}
continue;
}
n = get_indent_nolabel(curwin->w_cursor.lnum); // XXX
// case xx: if (cond) <- line up with this if
// y = y + 1;
// -> s = 99;
//
// case xx:
// if (cond) <- line up with this line
// y = y + 1;
// -> s = 99;
if (lookfor == LOOKFOR_TERM)
{
if (n)
amount = n;
if (!lookfor_break)
break;
}
// case xx: x = x + 1; <- line up with this x
// -> y = y + 1;
//
// case xx: if (cond) <- line up with this if
// -> y = y + 1;
if (n)
{
amount = n;
l = after_label(ml_get_curline());
if (l != NULL && cin_is_cinword(l))
{
if (theline[0] == '{')
amount += curbuf->b_ind_open_extra;
else
amount += curbuf->b_ind_level
+ curbuf->b_ind_no_brace;
}
break;
}
// Try to get the indent of a statement before the switch
// label. If nothing is found, line up relative to the
// switch label.
// break; <- may line up with this line
// case xx:
// -> y = 1;
scope_amount = get_indent() + (iscase // XXX
? curbuf->b_ind_case_code
: curbuf->b_ind_scopedecl_code);
lookfor = curbuf->b_ind_case_break
? LOOKFOR_NOBREAK : LOOKFOR_ANY;
continue;
}
// Looking for a switch() label or C++ scope declaration,
// ignore other lines, skip {}-blocks.
if (lookfor == LOOKFOR_CASE || lookfor == LOOKFOR_SCOPEDECL)
{
if (find_last_paren(l, '{', '}')
&& (trypos = find_start_brace()) != NULL)
{
curwin->w_cursor.lnum = trypos->lnum + 1;
curwin->w_cursor.col = 0;
}
continue;
}
// Ignore jump labels with nothing after them.
if (!curbuf->b_ind_js && cin_islabel())
{
l = after_label(ml_get_curline());
if (l == NULL || cin_nocode(l))
continue;
}
// Ignore #defines, #if, etc.
// Ignore comment and empty lines.
// (need to get the line again, cin_islabel() may have
// unlocked it)
l = ml_get_curline();
if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum, &amount)
|| cin_nocode(l))
continue;
// Are we at the start of a cpp base class declaration or
// constructor initialization? XXX
n = FALSE;
if (lookfor != LOOKFOR_TERM && curbuf->b_ind_cpp_baseclass > 0)
{
n = cin_is_cpp_baseclass(&cache_cpp_baseclass);
l = ml_get_curline();
}
if (n)
{
if (lookfor == LOOKFOR_UNTERM)
{
if (cont_amount > 0)
amount = cont_amount;
else
amount += ind_continuation;
}
else if (theline[0] == '{')
{
// Need to find start of the declaration.
lookfor = LOOKFOR_UNTERM;
ind_continuation = 0;
continue;
}
else
// XXX
amount = get_baseclass_amount(
cache_cpp_baseclass.lpos.col);
break;
}
else if (lookfor == LOOKFOR_CPP_BASECLASS)
{
// only look, whether there is a cpp base class
// declaration or initialization before the opening brace.
if (cin_isterminated(l, TRUE, FALSE))
break;
else
continue;
}
// What happens next depends on the line being terminated.
// If terminated with a ',' only consider it terminating if
// there is another unterminated statement behind, eg:
// 123,
// sizeof
// here
// Otherwise check whether it is 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 = 0; // only check the first line
if (curbuf->b_ind_js && terminated == ',')
{
// For Javascript we might be inside an object:
// key: something, <- align with this
// key: something
// or:
// key: something + <- align with this
// something,
// key: something
lookfor = LOOKFOR_JS_KEY;
}
}
if (lookfor == LOOKFOR_JS_KEY && cin_has_js_key(l))
{
amount = get_indent();
break;
}
if (lookfor == LOOKFOR_COMMA)
{
if (tryposBrace != NULL && tryposBrace->lnum
>= curwin->w_cursor.lnum)
break;
if (terminated == ',')
// line below current line is the one that starts a
// (possibly broken) line ending in a comma.
break;
else
{
amount = get_indent();
if (curwin->w_cursor.lnum - 1 == ourscope)
// line above is start of the scope, thus current
// line is the one that stars a (possibly broken)
// line ending in a comma.
break;
}
}
if (terminated == 0 || (lookfor != LOOKFOR_UNTERM
&& terminated == ','))
{
if (lookfor != LOOKFOR_ENUM_OR_INIT &&
(*skipwhite(l) == '[' || l[STRLEN(l) - 1] == '['))
amount += ind_continuation;
// if we're in the middle of a paren thing,
// go back to the line that starts it so
// we can get the right prevailing indent
// if ( foo &&
// bar )
// Position the cursor over the rightmost paren, so that
// matching it will take us back to the start of the line.
// Ignore a match before the start of the block.
(void)find_last_paren(l, '(', ')');
trypos = find_match_paren(corr_ind_maxparen(&cur_curpos));
if (trypos != NULL && (trypos->lnum < tryposBrace->lnum
|| (trypos->lnum == tryposBrace->lnum
&& trypos->col < tryposBrace->col)))
trypos = NULL;
l = ml_get_curline();
// If we are looking for ',', we also look for matching
// braces.
if (trypos == NULL && terminated == ',')
{
if (find_last_paren(l, '{', '}'))
trypos = find_start_brace();
l = ml_get_curline();
}
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{backslash}
// 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;
}
l = ml_get_curline();
}
// Get indent and pointer to text for current line,
// ignoring any jump label. XXX
if (curbuf->b_ind_js)
cur_amount = get_indent();
else
cur_amount = skip_label(curwin->w_cursor.lnum, &l);
// If this is just above the line we are indenting, and it
// starts with a '{', line it up with this line.
// while (not)
// -> {
// }
if (terminated != ',' && lookfor != LOOKFOR_TERM
&& theline[0] == '{')
{
amount = cur_amount;
// Only add b_ind_open_extra when the current line
// doesn't start with a '{', which must have a match
// in the same line (scope is the same). Probably:
// { 1, 2 },
// -> { 3, 4 }
if (*skipwhite(l) != '{')
amount += curbuf->b_ind_open_extra;
if (curbuf->b_ind_cpp_baseclass && !curbuf->b_ind_js)
{
// have to look back, whether it is a cpp base
// class declaration or initialization
lookfor = LOOKFOR_CPP_BASECLASS;
continue;
}
break;
}
// Check if we are after an "if", "while", etc.
// Also allow "} else".
if (cin_is_cinword(l) || cin_iselse(skipwhite(l)))
{
// Found an unterminated line after an if (), line up
// with the last one.
// if (cond)
// 100 +
// -> here;
if (lookfor == LOOKFOR_UNTERM
|| lookfor == LOOKFOR_ENUM_OR_INIT)
{
if (cont_amount > 0)
amount = cont_amount;
else
amount += ind_continuation;
break;
}
// If this is just above the line we are indenting, we
// are finished.
// while (not)
// -> here;
// Otherwise this indent can be used when the line
// before this is terminated.
// yyy;
// if (stat)
// while (not)
// xxx;
// -> here;
amount = cur_amount;
if (theline[0] == '{')
amount += curbuf->b_ind_open_extra;
if (lookfor != LOOKFOR_TERM)
{
amount += curbuf->b_ind_level
+ curbuf->b_ind_no_brace;
break;
}
// Special trick: when expecting the while () after a
// do, line up with the while ()
// do
// x = 1;
// -> here
l = skipwhite(ml_get_curline());
if (cin_isdo(l))
{
if (whilelevel == 0)
break;
--whilelevel;
}
// When searching for a terminated line, don't use the
// one between the "if" and the matching "else".
// Need to use the scope of this "else". XXX
// If whilelevel != 0 continue looking for a "do {".
if (cin_iselse(l) && whilelevel == 0)
{
// If we're looking at "} else", let's make sure we
// find the opening brace of the enclosing scope,
// not the one from "if (condition) {".
if (*l == '}')
curwin->w_cursor.col =
(colnr_T)(l - ml_get_curline()) + 1;
if ((trypos = find_start_brace()) == NULL
|| find_match(LOOKFOR_IF, trypos->lnum)
== FAIL)
break;
}
}
// If we're below an unterminated line that is not an
// "if" or something, we may line up with this line or
// add something for a continuation line, depending on
// the line before this one.
else
{
// Found two unterminated lines on a row, line up with
// the last one.
// c = 99 +
// 100 +
// -> here;
if (lookfor == LOOKFOR_UNTERM)
{
// When line ends in a comma add extra indent
if (terminated == ',')
amount += ind_continuation;
break;
}
if (lookfor == LOOKFOR_ENUM_OR_INIT)
{
// Found two lines ending in ',', lineup with the
// lowest one, but check for cpp base class
// declaration/initialization, if it is an
// opening brace or we are looking just for
// enumerations/initializations.
if (terminated == ',')
{
if (curbuf->b_ind_cpp_baseclass == 0)
break;
lookfor = LOOKFOR_CPP_BASECLASS;
continue;
}
// Ignore unterminated lines in between, but
// reduce indent.
if (amount > cur_amount)
amount = cur_amount;
}
else
{
// Found first unterminated line on a row, may
// line up with this line, remember its indent
// 100 +
// -> here;
l = ml_get_curline();
amount = cur_amount;
n = (int)STRLEN(l);
if (terminated == ',' && (*skipwhite(l) == ']'
|| (n >=2 && l[n - 2] == ']')))
break;
// If previous line ends in ',', check whether we
// are in an initialization or enum
// struct xxx =
// {
// sizeof a,
// 124 };
// or a normal possible continuation line.
// but only, of no other statement has been found
// yet.
if (lookfor == LOOKFOR_INITIAL && terminated == ',')
{
if (curbuf->b_ind_js)
{
// Search for a line ending in a comma
// and line up with the line below it
// (could be the current line).
// some = [
// 1, <- line up here
// 2,
// some = [
// 3 + <- line up here
// 4 *
// 5,
// 6,
if (cin_iscomment(skipwhite(l)))
break;
lookfor = LOOKFOR_COMMA;
trypos = find_match_char('[',
curbuf->b_ind_maxparen);
if (trypos != NULL)
{
if (trypos->lnum
== curwin->w_cursor.lnum - 1)
{
// Current line is first inside
// [], line up with it.
break;
}
ourscope = trypos->lnum;
}
}
else
{
lookfor = LOOKFOR_ENUM_OR_INIT;
cont_amount = cin_first_id_amount();
}
}
else
{
if (lookfor == LOOKFOR_INITIAL
&& *l != NUL
&& l[STRLEN(l) - 1] == '\\')
// XXX
cont_amount = cin_get_equal_amount(
curwin->w_cursor.lnum);
if (lookfor != LOOKFOR_TERM
&& lookfor != LOOKFOR_JS_KEY
&& lookfor != LOOKFOR_COMMA
&& raw_string_start != curwin->w_cursor.lnum)
lookfor = LOOKFOR_UNTERM;
}
}
}
}
// Check if we are after a while (cond);
// If so: Ignore until the matching "do".
else if (cin_iswhileofdo_end(terminated)) // XXX
{
// Found an unterminated line after a while ();, line up
// with the last one.
// while (cond);
// 100 + <- line up with this one
// -> here;
if (lookfor == LOOKFOR_UNTERM
|| lookfor == LOOKFOR_ENUM_OR_INIT)
{
if (cont_amount > 0)
amount = cont_amount;
else
amount += ind_continuation;
break;
}
if (whilelevel == 0)
{
lookfor = LOOKFOR_TERM;
amount = get_indent(); // XXX
if (theline[0] == '{')
amount += curbuf->b_ind_open_extra;
}
++whilelevel;
}
// We are after a "normal" statement.
// If we had another statement we can stop now and use the
// indent of that other statement.
// Otherwise the indent of the current statement may be used,
// search backwards for the next "normal" statement.
else
{
// Skip single break line, if before a switch label. It
// may be lined up with the case label.
if (lookfor == LOOKFOR_NOBREAK
&& cin_isbreak(skipwhite(ml_get_curline())))
{
lookfor = LOOKFOR_ANY;
continue;
}
// Handle "do {" line.
if (whilelevel > 0)
{
l = cin_skipcomment(ml_get_curline());
if (cin_isdo(l))
{
amount = get_indent(); // XXX
--whilelevel;
continue;
}
}
// Found a terminated line above an unterminated line. Add
// the amount for a continuation line.
// x = 1;
// y = foo +
// -> here;
// or
// int x = 1;
// int foo,
// -> here;
if (lookfor == LOOKFOR_UNTERM
|| lookfor == LOOKFOR_ENUM_OR_INIT)
{
if (cont_amount > 0)
amount = cont_amount;
else
amount += ind_continuation;
break;
}
// Found a terminated line above a terminated line or "if"
// etc. line. Use the amount of the line below us.
// x = 1; x = 1;
// if (asdf) y = 2;
// while (asdf) ->here;
// here;
// ->foo;
if (lookfor == LOOKFOR_TERM)
{
if (!lookfor_break && whilelevel == 0)
break;
}
// First line above the one we're indenting is terminated.
// To know what needs to be done look further backward for
// a terminated line.
else
{
// position the cursor over the rightmost paren, so
// that matching it will take us back to the start of
// the line. Helps for:
// func(asdr,
// asdfasdf);
// here;
term_again:
l = ml_get_curline();
if (find_last_paren(l, '(', ')')
&& (trypos = find_match_paren(
curbuf->b_ind_maxparen)) != NULL)
{
// Check if we are on a case label now. This is
// handled above.
// case xx: if ( asdf &&
// asdf)
curwin->w_cursor = *trypos;
l = ml_get_curline();
if (cin_iscase(l, FALSE) || cin_isscopedecl(l))
{
++curwin->w_cursor.lnum;
curwin->w_cursor.col = 0;
continue;
}
}
// When aligning with the case statement, don't align
// with a statement after it.
// case 1: { <-- don't use this { position
// stat;
// }
// case 2:
// stat;
// }
iscase = (curbuf->b_ind_keep_case_label
&& cin_iscase(l, FALSE));
// Get indent and pointer to text for current line,
// ignoring any jump label.
amount = skip_label(curwin->w_cursor.lnum, &l);
if (theline[0] == '{')
amount += curbuf->b_ind_open_extra;
// See remark above: "Only add b_ind_open_extra.."
l = skipwhite(l);
if (*l == '{')
amount -= curbuf->b_ind_open_extra;
lookfor = iscase ? LOOKFOR_ANY : LOOKFOR_TERM;
// When a terminated line starts with "else" skip to
// the matching "if":
// else 3;
// indent this;
// Need to use the scope of this "else". XXX
// If whilelevel != 0 continue looking for a "do {".
if (lookfor == LOOKFOR_TERM
&& *l != '}'
&& cin_iselse(l)
&& whilelevel == 0)
{
if ((trypos = find_start_brace()) == NULL
|| find_match(LOOKFOR_IF, trypos->lnum)
== FAIL)
break;
continue;
}
// If we're at the end of a block, skip to the start of
// that block.
l = ml_get_curline();
if (find_last_paren(l, '{', '}') // XXX
&& (trypos = find_start_brace()) != NULL)
{
curwin->w_cursor = *trypos;
// if not "else {" check for terminated again
// but skip block for "} else {"
l = cin_skipcomment(ml_get_curline());
if (*l == '}' || !cin_iselse(l))
goto term_again;
++curwin->w_cursor.lnum;
curwin->w_cursor.col = 0;
}
}
}
}
}
}
// add extra indent for a comment
if (cin_iscomment(theline))
amount += curbuf->b_ind_comment;
// subtract extra left-shift for jump labels
if (curbuf->b_ind_jump_label > 0 && original_line_islabel)
amount -= curbuf->b_ind_jump_label;
goto theend;
}
// ok -- we're not inside any sort of structure at all!
//
// This means we're at the top level, and everything should
// basically just match where the previous line is, except
// for the lines immediately following a function declaration,
// which are K&R-style parameters and need to be indented.
//
// if our line starts with an open brace, forget about any
// prevailing indent and make sure it looks like the start
// of a function
if (theline[0] == '{')
{
amount = curbuf->b_ind_first_open;
goto theend;
}
// If the NEXT line is a function declaration, the current
// line needs to be indented as a function type spec.
// Don't do this if the current line looks like a comment or if the
// current line is terminated, ie. ends in ';', or if the current line
// contains { or }: "void f(condition) {\n if (1)"
if (cur_curpos.lnum < curbuf->b_ml.ml_line_count
&& !cin_nocode(theline)
&& vim_strchr(theline, '{') == NULL
&& vim_strchr(theline, '}') == NULL
&& !cin_ends_in(theline, (char_u *)":", NULL)
&& !cin_ends_in(theline, (char_u *)",", NULL)
&& cin_isfuncdecl(NULL, cur_curpos.lnum + 1,
cur_curpos.lnum + 1)
&& !cin_isterminated(theline, FALSE, TRUE))
{
amount = curbuf->b_ind_func_type;
goto theend;
}
// search backwards until we find something we recognize
amount = 0;
curwin->w_cursor = cur_curpos;
while (curwin->w_cursor.lnum > 1)
{
curwin->w_cursor.lnum--;
curwin->w_cursor.col = 0;
l = ml_get_curline();
// If we're in a comment or raw string now, skip to the start
// of it. XXX
if ((trypos = ind_find_start_CORS(NULL)) != NULL)
{
curwin->w_cursor.lnum = trypos->lnum + 1;
curwin->w_cursor.col = 0;
continue;
}
// Are we at the start of a cpp base class declaration or
// constructor initialization? XXX
n = FALSE;
if (curbuf->b_ind_cpp_baseclass != 0)
{
n = cin_is_cpp_baseclass(&cache_cpp_baseclass);
l = ml_get_curline();
}
if (n)
{
// XXX
amount = get_baseclass_amount(cache_cpp_baseclass.lpos.col);
break;
}
// Skip preprocessor directives and blank lines.
if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum, &amount))
continue;
if (cin_nocode(l))
continue;
// If the previous line ends in ',', use one level of
// indentation:
// int foo,
// bar;
// do this before checking for '}' in case of eg.
// enum foobar
// {
// ...
// } foo,
// bar;
n = 0;
if (cin_ends_in(l, (char_u *)",", NULL)
|| (*l != NUL && (n = l[STRLEN(l) - 1]) == '\\'))
{
// take us back to opening paren
if (find_last_paren(l, '(', ')')
&& (trypos = find_match_paren(
curbuf->b_ind_maxparen)) != NULL)
curwin->w_cursor = *trypos;
// For a line ending in ',' that is a continuation line go
// back to the first line with a backslash:
// char *foo = "bla{backslash}
// bla",
// here;
while (n == 0 && curwin->w_cursor.lnum > 1)
{
l = ml_get(curwin->w_cursor.lnum - 1);
if (*l == NUL || l[STRLEN(l) - 1] != '\\')
break;
--curwin->w_cursor.lnum;
curwin->w_cursor.col = 0;
}
amount = get_indent(); // XXX
if (amount == 0)
amount = cin_first_id_amount();
if (amount == 0)
amount = ind_continuation;
break;
}
// If the line looks like a function declaration, and we're
// not in a comment, put it the left margin.
if (cin_isfuncdecl(NULL, cur_curpos.lnum, 0)) // XXX
break;
l = ml_get_curline();
// Finding the closing '}' of a previous function. Put
// current line at the left margin. For when 'cino' has "fs".
if (*skipwhite(l) == '}')
break;
// (matching {)
// If the previous line ends on '};' (maybe followed by
// comments) align at column 0. For example:
// char *string_array[] = { "foo",
// / * x * / "b};ar" }; / * foobar * /
if (cin_ends_in(l, (char_u *)"};", NULL))
break;
// If the previous line ends on '[' we are probably in an
// array constant:
// something = [
// 234, <- extra indent
if (cin_ends_in(l, (char_u *)"[", NULL))
{
amount = get_indent() + ind_continuation;
break;
}
// Find a line only has a semicolon that belongs to a previous
// line ending in '}', e.g. before an #endif. Don't increase
// indent then.
if (*(look = skipwhite(l)) == ';' && cin_nocode(look + 1))
{
pos_T curpos_save = curwin->w_cursor;
while (curwin->w_cursor.lnum > 1)
{
look = ml_get(--curwin->w_cursor.lnum);
if (!(cin_nocode(look) || cin_ispreproc_cont(
&look, &curwin->w_cursor.lnum, &amount)))
break;
}
if (curwin->w_cursor.lnum > 0
&& cin_ends_in(look, (char_u *)"}", NULL))
break;
curwin->w_cursor = curpos_save;
}
// If the PREVIOUS line is a function declaration, the current
// line (and the ones that follow) needs to be indented as
// parameters.
if (cin_isfuncdecl(&l, curwin->w_cursor.lnum, 0))
{
amount = curbuf->b_ind_param;
break;
}
// If the previous line ends in ';' and the line before the
// previous line ends in ',' or '\', ident to column zero:
// int foo,
// bar;
// indent_to_0 here;
if (cin_ends_in(l, (char_u *)";", NULL))
{
l = ml_get(curwin->w_cursor.lnum - 1);
if (cin_ends_in(l, (char_u *)",", NULL)
|| (*l != NUL && l[STRLEN(l) - 1] == '\\'))
break;
l = ml_get_curline();
}
// Doesn't look like anything interesting -- so just
// use the indent of this line.
//
// Position the cursor over the rightmost paren, so that
// matching it will take us back to the start of the line.
find_last_paren(l, '(', ')');
if ((trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL)
curwin->w_cursor = *trypos;
amount = get_indent(); // XXX
break;
}
// add extra indent for a comment
if (cin_iscomment(theline))
amount += curbuf->b_ind_comment;
// add extra indent if the previous line ended in a backslash:
// "asdfasdf{backslash}
// here";
// char *foo = "asdf{backslash}
// here";
if (cur_curpos.lnum > 1)
{
l = ml_get(cur_curpos.lnum - 1);
if (*l != NUL && l[STRLEN(l) - 1] == '\\')
{
cur_amount = cin_get_equal_amount(cur_curpos.lnum - 1);
if (cur_amount > 0)
amount = cur_amount;
else if (cur_amount == 0)
amount += ind_continuation;
}
}
theend:
if (amount < 0)
amount = 0;
laterend:
// put the cursor back where it belongs
curwin->w_cursor = cur_curpos;
vim_free(linecopy);
return amount;
}
/*
* return TRUE if 'cinkeys' contains the key "keytyped",
* when == '*': Only if key is preceded with '*' (indent before insert)
* when == '!': Only if key is preceded with '!' (don't insert)
* when == ' ': Only if key is not preceded with '*'(indent afterwards)
*
* "keytyped" can have a few special values:
* KEY_OPEN_FORW
* KEY_OPEN_BACK
* KEY_COMPLETE just finished completion.
*
* If line_is_empty is TRUE accept keys with '0' before them.
*/
int
in_cinkeys(
int keytyped,
int when,
int line_is_empty)
{
char_u *look;
int try_match;
int try_match_word;
char_u *p;
char_u *line;
int icase;
int i;
if (keytyped == NUL)
// Can happen with CTRL-Y and CTRL-E on a short line.
return FALSE;
#ifdef FEAT_EVAL
if (*curbuf->b_p_inde != NUL)
look = curbuf->b_p_indk; // 'indentexpr' set: use 'indentkeys'
else
#endif
look = curbuf->b_p_cink; // 'indentexpr' empty: use 'cinkeys'
while (*look)
{
// Find out if we want to try a match with this key, depending on
// 'when' and a '*' or '!' before the key.
switch (when)
{
case '*': try_match = (*look == '*'); break;
case '!': try_match = (*look == '!'); break;
default: try_match = (*look != '*'); break;
}
if (*look == '*' || *look == '!')
++look;
// If there is a '0', only accept a match if the line is empty.
// But may still match when typing last char of a word.
if (*look == '0')
{
try_match_word = try_match;
if (!line_is_empty)
try_match = FALSE;
++look;
}
else
try_match_word = FALSE;
// does it look like a control character?
if (*look == '^' && look[1] >= '?' && look[1] <= '_')
{
if (try_match && keytyped == Ctrl_chr(look[1]))
return TRUE;
look += 2;
}
// 'o' means "o" command, open forward.
// 'O' means "O" command, open backward.
else if (*look == 'o')
{
if (try_match && keytyped == KEY_OPEN_FORW)
return TRUE;
++look;
}
else if (*look == 'O')
{
if (try_match && keytyped == KEY_OPEN_BACK)
return TRUE;
++look;
}
// 'e' means to check for "else" at start of line and just before the
// cursor.
else if (*look == 'e')
{
if (try_match && keytyped == 'e' && curwin->w_cursor.col >= 4)
{
p = ml_get_curline();
if (skipwhite(p) == p + curwin->w_cursor.col - 4 &&
STRNCMP(p + curwin->w_cursor.col - 4, "else", 4) == 0)
return TRUE;
}
++look;
}
// ':' only causes an indent if it is at the end of a label or case
// statement, or when it was before typing the ':' (to fix
// class::method for C++).
else if (*look == ':')
{
if (try_match && keytyped == ':')
{
p = ml_get_curline();
if (cin_iscase(p, FALSE) || cin_isscopedecl(p) || cin_islabel())
return TRUE;
// Need to get the line again after cin_islabel().
p = ml_get_curline();
if (curwin->w_cursor.col > 2
&& p[curwin->w_cursor.col - 1] == ':'
&& p[curwin->w_cursor.col - 2] == ':')
{
p[curwin->w_cursor.col - 1] = ' ';
i = (cin_iscase(p, FALSE) || cin_isscopedecl(p)
|| cin_islabel());
p = ml_get_curline();
p[curwin->w_cursor.col - 1] = ':';
if (i)
return TRUE;
}
}
++look;
}
// Is it a key in <>, maybe?
else if (*look == '<')
{
if (try_match)
{
// make up some named keys <o>, <O>, <e>, <0>, <>>, <<>, <*>,
// <:> and <!> so that people can re-indent on o, O, e, 0, <,
// >, *, : and ! keys if they really really want to.
if (vim_strchr((char_u *)"<>!*oOe0:", look[1]) != NULL
&& keytyped == look[1])
return TRUE;
if (keytyped == get_special_key_code(look + 1))
return TRUE;
}
while (*look && *look != '>')
look++;
while (*look == '>')
look++;
}
// Is it a word: "=word"?
else if (*look == '=' && look[1] != ',' && look[1] != NUL)
{
++look;
if (*look == '~')
{
icase = TRUE;
++look;
}
else
icase = FALSE;
p = vim_strchr(look, ',');
if (p == NULL)
p = look + STRLEN(look);
if ((try_match || try_match_word)
&& curwin->w_cursor.col >= (colnr_T)(p - look))
{
int match = FALSE;
if (keytyped == KEY_COMPLETE)
{
char_u *s;
// Just completed a word, check if it starts with "look".
// search back for the start of a word.
line = ml_get_curline();
if (has_mbyte)
{
char_u *n;
for (s = line + curwin->w_cursor.col; s > line; s = n)
{
n = mb_prevptr(line, s);
if (!vim_iswordp(n))
break;
}
}
else
for (s = line + curwin->w_cursor.col; s > line; --s)
if (!vim_iswordc(s[-1]))
break;
if (s + (p - look) <= line + curwin->w_cursor.col
&& (icase
? MB_STRNICMP(s, look, p - look)
: STRNCMP(s, look, p - look)) == 0)
match = TRUE;
}
else
// TODO: multi-byte
if (keytyped == (int)p[-1] || (icase
&& keytyped < 256 && keytyped >= 0
&& TOLOWER_LOC(keytyped) == TOLOWER_LOC((int)p[-1])))
{
line = ml_get_cursor();
if ((curwin->w_cursor.col == (colnr_T)(p - look)
|| !vim_iswordc(line[-(p - look) - 1]))
&& (icase
? MB_STRNICMP(line - (p - look), look, p - look)
: STRNCMP(line - (p - look), look, p - look))
== 0)
match = TRUE;
}
if (match && try_match_word && !try_match)
{
// "0=word": Check if there are only blanks before the
// word.
if (getwhitecols_curline() !=
(int)(curwin->w_cursor.col - (p - look)))
match = FALSE;
}
if (match)
return TRUE;
}
look = p;
}
// ok, it's a boring generic character.
else
{
if (try_match && *look == keytyped)
return TRUE;
if (*look != NUL)
++look;
}
// Skip over ", ".
look = skip_to_option_part(look);
}
return FALSE;
}
/*
* Do C or expression indenting on the current line.
*/
void
do_c_expr_indent(void)
{
#ifdef FEAT_EVAL
if (*curbuf->b_p_inde != NUL)
fixthisline(get_expr_indent);
else
#endif
fixthisline(get_c_indent);
}
#if defined(FEAT_EVAL) || defined(PROTO)
/*
* "cindent(lnum)" function
*/
void
f_cindent(typval_T *argvars UNUSED, typval_T *rettv)
{
pos_T pos;
linenr_T lnum;
if (in_vim9script() && check_for_lnum_arg(argvars, 0) == FAIL)
return;
pos = curwin->w_cursor;
lnum = tv_get_lnum(argvars);
if (lnum >= 1 && lnum <= curbuf->b_ml.ml_line_count)
{
curwin->w_cursor.lnum = lnum;
rettv->vval.v_number = get_c_indent();
curwin->w_cursor = pos;
}
else
rettv->vval.v_number = -1;
}
#endif
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