File: //home/ubuntu/neovim/src/nvim/indent_c.c
#include <inttypes.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include "nvim/ascii_defs.h"
#include "nvim/buffer_defs.h"
#include "nvim/charset.h"
#include "nvim/cursor.h"
#include "nvim/edit.h"
#include "nvim/globals.h"
#include "nvim/indent.h"
#include "nvim/indent_c.h"
#include "nvim/macros_defs.h"
#include "nvim/mark_defs.h"
#include "nvim/memline.h"
#include "nvim/memory.h"
#include "nvim/option.h"
#include "nvim/option_vars.h"
#include "nvim/plines.h"
#include "nvim/pos_defs.h"
#include "nvim/search.h"
#include "nvim/state_defs.h"
#include "nvim/strings.h"
#include "nvim/types_defs.h"
#include "nvim/vim_defs.h"
// Find result cache for cpp_baseclass
typedef struct {
int found;
lpos_T lpos;
} cpp_baseclass_cache_T;
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "indent_c.c.generated.h"
#endif
// Find the start of a comment, not knowing if we are in a comment right now.
// Search starts at w_cursor.lnum and goes backwards.
// 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;
int64_t cur_maxcomment = ind_maxcomment;
while (true) {
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 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.
///
/// @returns NULL when not inside a comment or raw string.
///
/// @note "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 = 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;
}
pos_T *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(*rs_pos, *comment_pos))) {
if (is_raw != NULL && rs_pos != NULL) {
*is_raw = rs_pos->lnum;
}
return rs_pos;
}
return comment_pos;
}
// Find the start of a raw string, not knowing if we are in one right now.
// Search starts at w_cursor.lnum and goes backwards.
// Return NULL when not inside a raw string.
static pos_T *find_start_rawstring(int ind_maxcomment) // XXX
{
pos_T *pos;
int cur_maxcomment = ind_maxcomment;
while (true) {
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;
}
// Skip to the end of a "string" and a 'c' character.
// If there is no string or character, return argument unmodified.
static const char *skip_string(const char *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 (ascii_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]"
const char *delim = p + 2;
const char *paren = vim_strchr(delim, '(');
if (paren != NULL) {
const ptrdiff_t delim_len = paren - delim;
for (p += 3; *p; p++) {
if (p[0] == ')' && strncmp(p + 1, delim, (size_t)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;
}
/// @returns true if "line[col]" is inside a C string.
int is_pos_in_string(const char *line, colnr_T col)
{
const char *p;
for (p = line; *p && (colnr_T)(p - line) < col; p++) {
p = skip_string(p);
}
return !((colnr_T)(p - line) <= col);
}
// Functions for C-indenting.
// Most of this originally comes from Eric Fischer.
// Below "XXX" means that this function may unlock the current line.
/// @return true if the string "line" starts with a word from 'cinwords'.
bool cin_is_cinword(const char *line)
{
bool retval = false;
size_t cinw_len = strlen(curbuf->b_p_cinw) + 1;
char *cinw_buf = xmalloc(cinw_len);
line = skipwhite(line);
for (char *cinw = curbuf->b_p_cinw; *cinw;) {
size_t len = copy_option_part(&cinw, cinw_buf, cinw_len, ",");
if (strncmp(line, cinw_buf, len) == 0
&& (!vim_iswordc((uint8_t)line[len]) || !vim_iswordc((uint8_t)line[len - 1]))) {
retval = true;
break;
}
}
xfree(cinw_buf);
return retval;
}
// Skip over white space and C comments within the line.
// Also skip over Perl/shell comments if desired.
static const char *cin_skipcomment(const char *s)
{
while (*s) {
const char *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(const char *s)
{
return *cin_skipcomment(s) == NUL;
}
// Check previous lines for a "//" line comment, skipping over blank lines.
static pos_T *find_line_comment(void) // XXX
{
static pos_T pos;
char *line;
char *p;
pos = curwin->w_cursor;
while (--pos.lnum > 0) {
line = ml_get(pos.lnum);
p = skipwhite(line);
if (cin_islinecomment(p)) {
pos.col = (int)(p - line);
return &pos;
}
if (*p != NUL) {
break;
}
}
return NULL;
}
/// Checks if `text` starts with "key:".
static bool cin_has_js_key(const char *text)
{
const char *s = skipwhite(text);
char quote = 0;
if (*s == '\'' || *s == '"') {
// can be 'key': or "key":
quote = *s;
s++;
}
if (!vim_isIDc((uint8_t)(*s))) { // need at least one ID character
return false;
}
while (vim_isIDc((uint8_t)(*s))) {
s++;
}
if (*s && *s == quote) {
s++;
}
s = cin_skipcomment(s);
// "::" is not a label, it's C++
return (*s == ':' && s[1] != ':');
}
/// Checks if string matches "label:"; move to character after ':' if true.
/// "*s" must point to the start of the label, if there is one.
static bool cin_islabel_skip(const char **s)
FUNC_ATTR_NONNULL_ALL
{
if (!vim_isIDc((uint8_t)(**s))) { // need at least one ID character
return false;
}
while (vim_isIDc((uint8_t)(**s))) {
(*s)++;
}
*s = cin_skipcomment(*s);
// "::" is not a label, it's C++
return **s == ':' && *++*s != ':';
}
// Recognize a label: "label:".
// Note: curwin->w_cursor must be where we are looking for the label.
bool cin_islabel(void) // XXX
{
const char *s = cin_skipcomment(get_cursor_line_ptr());
// Exclude "default" from labels, since it should be indented
// like a switch label. Same for C++ scope declarations.
if (cin_isdefault(s)) {
return false;
}
if (cin_isscopedecl(s)) {
return false;
}
if (!cin_islabel_skip(&s)) {
return false;
}
// Only accept a label if the previous line is terminated or is a case
// label.
pos_T cursor_save;
pos_T *trypos;
const char *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 = get_cursor_line_ptr();
if (cin_ispreproc(line)) { // ignore #defines, #if, etc.
continue;
}
if (*(line = cin_skipcomment(line)) == NUL) {
continue;
}
curwin->w_cursor = cursor_save;
if (cin_isterminated(line, true, false)
|| cin_isscopedecl(line)
|| cin_iscase(line, true)
|| (cin_islabel_skip(&line) && cin_nocode(line))) {
return true;
}
return false;
}
curwin->w_cursor = cursor_save;
return true; // label at start of file???
}
// Recognize structure initialization and enumerations:
// "[typedef] [static|public|protected|private] enum"
// "[typedef] [static|public|protected|private] = {"
static int cin_isinit(void)
{
const char *s;
static char *skip[] = { "static", "public", "protected", "private" };
s = cin_skipcomment(get_cursor_line_ptr());
if (cin_starts_with(s, "typedef")) {
s = cin_skipcomment(s + 7);
}
while (true) {
int i, l;
for (i = 0; i < (int)ARRAY_SIZE(skip); i++) {
l = (int)strlen(skip[i]);
if (cin_starts_with(s, skip[i])) {
s = cin_skipcomment(s + l);
l = 0;
break;
}
}
if (l != 0) {
break;
}
}
if (cin_starts_with(s, "enum")) {
return true;
}
if (cin_ends_in(s, "=", "{")) {
return true;
}
return false;
}
/// Recognize a switch label: "case .*:" or "default:".
///
/// @param strict Allow relaxed check of case statement for JS
bool cin_iscase(const char *s, bool strict)
{
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
}
return true;
}
}
return false;
}
if (cin_isdefault(s)) {
return true;
}
return false;
}
// Recognize a "default" switch label.
static int cin_isdefault(const char *s)
{
return strncmp(s, "default", 7) == 0
&& *(s = cin_skipcomment(s + 7)) == ':'
&& s[1] != ':';
}
/// Recognize a scope declaration label set in 'cinscopedecls'.
bool cin_isscopedecl(const char *p)
{
const char *s = cin_skipcomment(p);
const size_t cinsd_len = strlen(curbuf->b_p_cinsd) + 1;
char *cinsd_buf = xmalloc(cinsd_len);
bool found = false;
for (char *cinsd = curbuf->b_p_cinsd; *cinsd;) {
const size_t len = copy_option_part(&cinsd, cinsd_buf, cinsd_len, ",");
if (strncmp(s, cinsd_buf, len) == 0) {
const char *skip = cin_skipcomment(s + len);
if (*skip == ':' && skip[1] != ':') {
found = true;
break;
}
}
}
xfree(cinsd_buf);
return found;
}
// Maximum number of lines to search back for a "namespace" line.
#define FIND_NAMESPACE_LIM 20
// Recognize a "namespace" scope declaration.
static bool cin_is_cpp_namespace(const char *s)
{
const char *p;
bool has_name = false;
bool 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((uint8_t)s[6]))) {
s = cin_skipcomment(skipwhite(s + 6));
}
if (strncmp(s, "namespace", 9) == 0 && (s[9] == NUL || !vim_iswordc((uint8_t)s[9]))) {
p = cin_skipcomment(skipwhite(s + 9));
while (*p != NUL) {
if (ascii_iswhite(*p)) {
has_name = true; // found end of a name
p = cin_skipcomment(skipwhite(p));
} else if (*p == '{') {
break;
} else if (vim_iswordc((uint8_t)(*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((uint8_t)p[2])) {
if (!has_name_start || has_name) {
return false;
}
// C++ 17 nested namespace
p += 3;
} else {
return false;
}
}
return true;
}
return false;
}
// Return a pointer to the first non-empty non-comment character after a ':'.
// Return NULL if not found.
// case 234: a = b;
// ^
static const char *after_label(const char *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
{
const char *l;
pos_T fp;
colnr_T col;
const char *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, const char **pp)
{
const char *l;
int amount;
pos_T cursor_save;
cursor_save = curwin->w_cursor;
curwin->w_cursor.lnum = lnum;
l = get_cursor_line_ptr();
// XXX
if (cin_iscase(l, false) || cin_isscopedecl(l) || cin_islabel()) {
amount = get_indent_nolabel(lnum);
l = after_label(get_cursor_line_ptr());
if (l == NULL) { // just in case
l = get_cursor_line_ptr();
}
} else {
amount = get_indent();
l = get_cursor_line_ptr();
}
*pp = l;
curwin->w_cursor = cursor_save;
return amount;
}
// Return the indent of the first variable name after a type in a declaration.
// int a, indent of "a"
// static struct foo b, indent of "b"
// enum bla c, indent of "c"
// Returns zero when it doesn't look like a declaration.
static int cin_first_id_amount(void)
{
char *line, *p, *s;
int len;
pos_T fp;
colnr_T col;
line = get_cursor_line_ptr();
p = skipwhite(line);
len = (int)(skiptowhite(p) - p);
if (len == 6 && strncmp(p, "static", 6) == 0) {
p = skipwhite(p + 6);
len = (int)(skiptowhite(p) - p);
}
if (len == 6 && strncmp(p, "struct", 6) == 0) {
p = skipwhite(p + 6);
} else if (len == 4 && strncmp(p, "enum", 4) == 0) {
p = skipwhite(p + 4);
} else if ((len == 8 && strncmp(p, "unsigned", 8) == 0)
|| (len == 6 && strncmp(p, "signed", 6) == 0)) {
s = skipwhite(p + len);
if ((strncmp(s, "int", 3) == 0 && ascii_iswhite(s[3]))
|| (strncmp(s, "long", 4) == 0 && ascii_iswhite(s[4]))
|| (strncmp(s, "short", 5) == 0 && ascii_iswhite(s[5]))
|| (strncmp(s, "char", 4) == 0 && ascii_iswhite(s[4]))) {
p = s;
}
}
for (len = 0; vim_isIDc((uint8_t)p[len]); len++) {}
if (len == 0 || !ascii_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{backslash}
// asdf{backslash}
// here";
static int cin_get_equal_amount(linenr_T lnum)
{
const char *line;
const char *s;
colnr_T col;
pos_T fp;
if (lnum > 1) {
line = ml_get(lnum - 1);
if (*line != NUL && line[strlen(line) - 1] == '\\') {
return -1;
}
}
s = ml_get(lnum);
line = s;
while (*s != NUL && vim_strchr("=;{}\"'", (uint8_t)(*s)) == NULL) {
if (cin_iscomment(s)) { // ignore comments
s = cin_skipcomment(s);
} else {
s++;
}
}
if (*s != '=') {
return 0;
}
s = skipwhite(s + 1);
if (cin_nocode(s)) {
return 0;
}
if (*s == '"') { // nice alignment for continued strings
s++;
}
fp.lnum = lnum;
fp.col = (colnr_T)(s - line);
getvcol(curwin, &fp, &col, NULL, NULL);
return (int)col;
}
// Recognize a preprocessor statement: Any line that starts with '#'.
static int cin_ispreproc(const char *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(const char **pp, linenr_T *lnump, int *amount)
{
const char *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);
}
while (true) {
if (cin_ispreproc(line)) {
retval = true;
*lnump = lnum;
break;
}
if (lnum == 1) {
break;
}
line = ml_get(--lnum);
if (*line == NUL || line[strlen(line) - 1] != '\\') {
break;
}
}
if (lnum != *lnump) {
*pp = ml_get(*lnump);
}
if (retval) {
*amount = candidate_amount;
}
return retval;
}
// Recognize the start of a C or C++ comment.
static int cin_iscomment(const char *p)
{
return p[0] == '/' && (p[1] == '*' || p[1] == '/');
}
// Recognize the start of a "//" comment.
static int cin_islinecomment(const char *p)
{
return p[0] == '/' && p[1] == '/';
}
/// Recognize a line that starts with '{' or '}', or ends with ';', ',', '{' or
/// '}'.
/// Don't consider "} else" a terminated line.
/// If a line begins with an "else", only consider it terminated if no unmatched
/// opening braces follow (handle "else { foo();" correctly).
///
/// @param incl_open include '{' at the end as terminator
/// @param incl_comma recognize a trailing comma
///
/// @return the character terminating the line (ending char's have precedence if
/// both apply in order to determine initializations).
static char cin_isterminated(const char *s, int incl_open, int incl_comma)
{
char 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;
}
/// Recognizes 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.
///
/// @param[in] 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.
/// @param[in] first_lnum Where to start looking.
/// @param[in] min_lnum The line before which we will not be looking.
static int cin_isfuncdecl(const char **sp, linenr_T first_lnum, linenr_T min_lnum)
{
const char *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 != '"') {
// ignore comments
if (cin_iscomment(s)) {
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)
while (true) {
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(const char *p)
{
return strncmp(p, "if", 2) == 0 && !vim_isIDc((uint8_t)p[2]);
}
static int cin_iselse(const char *p)
{
if (*p == '}') { // accept "} else"
p = cin_skipcomment(p + 1);
}
return strncmp(p, "else", 4) == 0 && !vim_isIDc((uint8_t)p[4]);
}
static int cin_isdo(const char *p)
{
return strncmp(p, "do", 2) == 0 && !vim_isIDc((uint8_t)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(const char *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 = get_cursor_line_ptr();
while (*p && *p != 'w') { // skip any '}', until the 'w' of the "while"
p++;
curwin->w_cursor.col++;
}
if ((trypos = findmatchlimit(NULL, 0, 0, curbuf->b_ind_maxparen)) != NULL
&& *cin_skipcomment(ml_get_pos(trypos) + 1) == ';') {
retval = true;
}
curwin->w_cursor = cursor_save;
}
return retval;
}
// Check whether in "p" there is an "if", "for" or "while" before "*poffset".
// Return 0 if there is none.
// Otherwise return !0 and update "*poffset" to point to the place where the
// string was found.
static int cin_is_if_for_while_before_offset(const char *line, int *poffset)
{
int offset = *poffset;
if (offset-- < 2) {
return 0;
}
while (offset > 2 && ascii_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((uint8_t)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)
{
const char *line;
const char *p;
const char *s;
pos_T *trypos;
int i;
if (terminated != ';') { // there must be a ';' at the end
return false;
}
p = line = get_cursor_line_ptr();
while (*p != NUL) {
p = cin_skipcomment(p);
if (*p == ')') {
s = skipwhite(p + 1);
if (*s == ';' && cin_nocode(s + 1)) {
// Found ");" at end of the line, now check there is "while"
// before the matching '('. XXX
i = (int)(p - line);
curwin->w_cursor.col = i;
trypos = find_match_paren(curbuf->b_ind_maxparen);
if (trypos != NULL) {
s = cin_skipcomment(ml_get(trypos->lnum));
if (*s == '}') { // accept "} while (cond);"
s = cin_skipcomment(s + 1);
}
if (cin_starts_with(s, "while")) {
curwin->w_cursor.lnum = trypos->lnum;
return true;
}
}
// Searching may have made "line" invalid, get it again.
line = get_cursor_line_ptr();
p = line + i;
}
}
if (*p != NUL) {
p++;
}
}
return false;
}
static int cin_isbreak(const char *p)
{
return strncmp(p, "break", 5) == 0 && !vim_isIDc((uint8_t)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)
{
lpos_T *pos = &cached->lpos; // find position
const char *s;
int class_or_struct, lookfor_ctor_init, cpp_base_class;
linenr_T lnum = curwin->w_cursor.lnum;
const char *line = get_cursor_line_ptr();
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;
while (true) {
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((uint8_t)s[5]))
|| (strncmp(s, "struct", 6) == 0 && !vim_isIDc((uint8_t)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((uint8_t)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(get_cursor_line_ptr(), '(', ')')
&& (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) {
amount = get_indent_lnum(trypos->lnum); // XXX
}
if (!cin_ends_in(get_cursor_line_ptr(), ",", NULL)) {
amount += curbuf->b_ind_cpp_baseclass;
}
} else {
curwin->w_cursor.col = col;
getvcol(curwin, &curwin->w_cursor, &vcol, NULL, NULL);
amount = (int)vcol;
}
if (amount < curbuf->b_ind_cpp_baseclass) {
amount = curbuf->b_ind_cpp_baseclass;
}
return amount;
}
/// Return true if string "s" ends with the string "find", possibly followed by
/// white space and comments. Skip strings and comments.
/// Ignore "ignore" after "find" if it's not NULL.
static int cin_ends_in(const char *s, const char *find, const char *ignore)
{
const char *p = s;
const char *r;
int len = (int)strlen(find);
while (*p != NUL) {
p = cin_skipcomment(p);
if (strncmp(p, find, (size_t)len) == 0) {
r = skipwhite(p + len);
if (ignore != NULL && strncmp(r, ignore, strlen(ignore)) == 0) {
r = skipwhite(r + strlen(ignore));
}
if (cin_nocode(r)) {
return true;
}
}
if (*p != NUL) {
p++;
}
}
return false;
}
/// Return true when "s" starts with "word" and then a non-ID character.
static int cin_starts_with(const char *s, const char *word)
{
size_t l = strlen(word);
return strncmp(s, word, l) == 0 && !vim_isIDc((uint8_t)s[l]);
}
/// Recognize a `extern "C"` or `extern "C++"` linkage specifications.
static int cin_is_cpp_extern_c(const char *s)
{
const char *p;
int has_string_literal = false;
s = cin_skipcomment(s);
if (strncmp(s, "extern", 6) == 0 && (s[6] == NUL || !vim_iswordc((uint8_t)s[6]))) {
p = cin_skipcomment(skipwhite(s + 6));
while (*p != NUL) {
if (ascii_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;
}
// Skip strings, chars and comments until at or past "trypos".
// Return the column found.
static int cin_skip2pos(pos_T *trypos)
{
const char *line;
const char *p;
const char *new_p;
line = ml_get(trypos->lnum);
p = line;
while (*p && (colnr_T)(p - line) < trypos->col) {
if (cin_iscomment(p)) {
p = cin_skipcomment(p);
} else {
new_p = skip_string(p);
if (new_p == p) {
p++;
} else {
p = new_p;
}
}
}
return (int)(p - line);
}
// Find the '{' at the start of the block we are in.
// Return NULL if no match found.
// Ignore a '{' that is in a comment, makes indenting the next three lines
// work.
// foo()
// {
// }
static pos_T *find_start_brace(void) // XXX
{
pos_T cursor_save;
pos_T *trypos;
pos_T *pos;
static pos_T pos_copy;
cursor_save = curwin->w_cursor;
while ((trypos = findmatchlimit(NULL, '{', FM_BLOCKSTOP, 0)) != NULL) {
pos_copy = *trypos; // copy pos_T, next findmatch will change it
trypos = &pos_copy;
curwin->w_cursor = *trypos;
pos = NULL;
// ignore the { if it's in a // or / * * / comment
if ((colnr_T)cin_skip2pos(trypos) == trypos->col
&& (pos = ind_find_start_CORS(NULL)) == NULL) { // XXX
break;
}
if (pos != NULL) {
curwin->w_cursor = *pos;
}
}
curwin->w_cursor = cursor_save;
return trypos;
}
/// Find the matching '(', ignoring it if it is in a comment.
/// @returns NULL or the found match.
static pos_T *find_match_paren(int ind_maxparen)
{
return find_match_char('(', ind_maxparen);
}
static pos_T *find_match_char(char c, int ind_maxparen)
{
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, (uint8_t)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 - (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 - (cursor_save.lnum - trypos_wk->lnum);
if (ind_maxp_wk > 0) {
curwin->w_cursor = *trypos_wk;
goto retry;
}
trypos = NULL;
}
}
}
curwin->w_cursor = cursor_save;
return trypos;
}
/// Find the matching '(', ignoring it if it is in a comment or before an
/// unmatched {.
/// @returns NULL or the found match.
static pos_T *find_match_paren_after_brace(int ind_maxparen)
{
pos_T *trypos = find_match_paren(ind_maxparen);
if (trypos == NULL) {
return NULL;
}
pos_T *tryposBrace = find_start_brace();
// If both an unmatched '(' and '{' is found. Ignore the '('
// position if the '{' is further down.
if (tryposBrace != NULL
&& (trypos->lnum != tryposBrace->lnum
? trypos->lnum < tryposBrace->lnum
: trypos->col < tryposBrace->col)) {
trypos = NULL;
}
return trypos;
}
// Return ind_maxparen corrected for the difference in line number between the
// cursor position and "startpos". This makes sure that searching for a
// matching paren above the cursor line doesn't find a match because of
// looking a few lines further.
static int corr_ind_maxparen(pos_T *startpos)
{
int n = startpos->lnum - curwin->w_cursor.lnum;
if (n > 0 && n < curbuf->b_ind_maxparen / 2) {
return curbuf->b_ind_maxparen - n;
}
return curbuf->b_ind_maxparen;
}
// Set w_cursor.col to the column number of the last unmatched ')' or '{' in
// line "l". "l" must point to the start of the line.
static int find_last_paren(const char *l, char start, char end)
{
int i;
int retval = false;
int open_count = 0;
curwin->w_cursor.col = 0; // default is start of line
for (i = 0; l[i] != NUL; i++) {
i = (int)(cin_skipcomment(l + i) - l); // ignore parens in comments
i = (int)(skip_string(l + i) - l); // ignore parens in quotes
if (l[i] == start) {
open_count++;
} else if (l[i] == end) {
if (open_count > 0) {
open_count--;
} else {
curwin->w_cursor.col = i;
retval = true;
}
}
}
return retval;
}
// Parse 'cinoptions' and set the values in "curbuf".
// Must be called when 'cinoptions', 'shiftwidth' and/or 'tabstop' changes.
void parse_cino(buf_T *buf)
{
char *p;
char *l;
int divider;
int fraction = 0;
int sw = get_sw_value(buf);
// Set the default values.
// Spaces from a block's opening brace the prevailing indent for that
// block should be.
buf->b_ind_level = sw;
// Spaces from the edge of the line an open brace that's at the end of a
// line is imagined to be.
buf->b_ind_open_imag = 0;
// Spaces from the prevailing indent for a line that is not preceded by
// an opening brace.
buf->b_ind_no_brace = 0;
// Column where the first { of a function should be located }.
buf->b_ind_first_open = 0;
// Spaces from the prevailing indent a leftmost open brace should be
// located.
buf->b_ind_open_extra = 0;
// Spaces from the matching open brace (real location for one at the left
// edge; imaginary location from one that ends a line) the matching close
// brace should be located.
buf->b_ind_close_extra = 0;
// Spaces from the edge of the line an open brace sitting in the leftmost
// column is imagined to be.
buf->b_ind_open_left_imag = 0;
// Spaces jump labels should be shifted to the left if N is non-negative,
// otherwise the jump label will be put to column 1.
buf->b_ind_jump_label = -1;
// Spaces from the switch() indent a "case xx" label should be located.
buf->b_ind_case = sw;
// Spaces from the "case xx:" code after a switch() should be located.
buf->b_ind_case_code = sw;
// Lineup break at end of case in switch() with case label.
buf->b_ind_case_break = 0;
// Spaces from the class declaration indent a scope declaration label
// should be located.
buf->b_ind_scopedecl = sw;
// Spaces from the scope declaration label code should be located.
buf->b_ind_scopedecl_code = sw;
// Amount K&R-style parameters should be indented.
buf->b_ind_param = sw;
// Amount a function type spec should be indented.
buf->b_ind_func_type = sw;
// Amount a cpp base class declaration or constructor initialization
// should be indented.
buf->b_ind_cpp_baseclass = sw;
// additional spaces beyond the prevailing indent a continuation line
// should be located.
buf->b_ind_continuation = sw;
// Spaces from the indent of the line with an unclosed parentheses.
buf->b_ind_unclosed = sw * 2;
// Spaces from the indent of the line with an unclosed parentheses, which
// itself is also unclosed.
buf->b_ind_unclosed2 = sw;
// Suppress ignoring spaces from the indent of a line starting with an
// unclosed 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 parentheses.
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++;
}
char *digits_start = p; // remember where the digits start
int n = getdigits_int(&p, true, 0);
divider = 0;
if (*p == '.') { // ".5s" means a fraction.
fraction = atoi(++p);
while (ascii_isdigit(*p)) {
p++;
if (divider) {
divider *= 10;
} else {
divider = 10;
}
}
}
if (*p == 's') { // "2s" means two times 'shiftwidth'.
if (p == digits_start) {
n = sw; // just "s" is one 'shiftwidth'.
} else {
n *= sw;
if (divider) {
n += (sw * fraction + divider / 2) / divider;
}
}
p++;
}
if (l[1] == '-') {
n = -n;
}
// When adding an entry here, also update the default 'cinoptions' in
// doc/indent.txt, and add explanation for it!
switch (*l) {
case '>':
buf->b_ind_level = n;
break;
case 'e':
buf->b_ind_open_imag = n;
break;
case 'n':
buf->b_ind_no_brace = n;
break;
case 'f':
buf->b_ind_first_open = n;
break;
case '{':
buf->b_ind_open_extra = n;
break;
case '}':
buf->b_ind_close_extra = n;
break;
case '^':
buf->b_ind_open_left_imag = n;
break;
case 'L':
buf->b_ind_jump_label = n;
break;
case ':':
buf->b_ind_case = n;
break;
case '=':
buf->b_ind_case_code = n;
break;
case 'b':
buf->b_ind_case_break = n;
break;
case 'p':
buf->b_ind_param = n;
break;
case 't':
buf->b_ind_func_type = n;
break;
case '/':
buf->b_ind_comment = n;
break;
case 'c':
buf->b_ind_in_comment = n;
break;
case 'C':
buf->b_ind_in_comment2 = n;
break;
case 'i':
buf->b_ind_cpp_baseclass = n;
break;
case '+':
buf->b_ind_continuation = n;
break;
case '(':
buf->b_ind_unclosed = n;
break;
case 'u':
buf->b_ind_unclosed2 = n;
break;
case 'U':
buf->b_ind_unclosed_noignore = n;
break;
case 'W':
buf->b_ind_unclosed_wrapped = n;
break;
case 'w':
buf->b_ind_unclosed_whiteok = n;
break;
case 'm':
buf->b_ind_matching_paren = n;
break;
case 'M':
buf->b_ind_paren_prev = n;
break;
case ')':
buf->b_ind_maxparen = n;
break;
case '*':
buf->b_ind_maxcomment = n;
break;
case 'g':
buf->b_ind_scopedecl = n;
break;
case 'h':
buf->b_ind_scopedecl_code = n;
break;
case 'j':
buf->b_ind_java = n;
break;
case 'J':
buf->b_ind_js = n;
break;
case 'l':
buf->b_ind_keep_case_label = n;
break;
case '#':
buf->b_ind_hash_comment = n;
break;
case 'N':
buf->b_ind_cpp_namespace = n;
break;
case 'k':
buf->b_ind_if_for_while = n;
break;
case 'E':
buf->b_ind_cpp_extern_c = n;
break;
case 'P':
buf->b_ind_pragma = n;
break;
}
if (*p == ',') {
p++;
}
}
}
// Return the desired indent for C code.
// Return -1 if the indent should be left alone (inside a raw string).
int get_c_indent(void)
{
pos_T cur_curpos;
int amount;
int scope_amount;
int cur_amount = MAXCOL;
colnr_T col;
char *theline;
char *linecopy;
pos_T *trypos;
pos_T *comment_pos;
pos_T *tryposBrace = NULL;
pos_T tryposCopy;
pos_T our_paren_pos;
char *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;
const char *l;
const char *look;
char terminated;
int lookfor;
#define LOOKFOR_INITIAL 0
#define LOOKFOR_IF 1
#define LOOKFOR_DO 2
#define LOOKFOR_CASE 3
#define LOOKFOR_ANY 4
#define LOOKFOR_TERM 5
#define LOOKFOR_UNTERM 6
#define LOOKFOR_SCOPEDECL 7
#define LOOKFOR_NOBREAK 8
#define LOOKFOR_CPP_BASECLASS 9
#define LOOKFOR_ENUM_OR_INIT 10
#define LOOKFOR_JS_KEY 11
#define LOOKFOR_COMMA 12
int whilelevel;
linenr_T lnum;
int n;
int lookfor_break;
bool lookfor_cpp_namespace = false;
int cont_amount = 0; // amount for continuation line
int original_line_islabel;
int added_to_amount = 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 = xstrdup(ml_get(cur_curpos.lnum));
// In insert mode and the cursor is on a ')' truncate the line at the
// cursor position. We don't want to line up with the matching '(' when
// inserting new stuff.
// For unknown reasons the cursor might be past the end of the line, thus
// check for that.
if ((State & 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(*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))) {
const char *const 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 lead_start[COM_MAX_LEN]; // start-comment string
char lead_middle[COM_MAX_LEN]; // middle-comment string
char lead_end[COM_MAX_LEN]; // end-comment string
char *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 = (unsigned char)(*p++);
} else if (*p == COM_LEFT || *p == COM_RIGHT) {
align = (unsigned char)(*p++);
} else if (ascii_isdigit(*p) || *p == '-') {
off = getdigits_int(&p, true, 0);
} 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, (size_t)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, (size_t)lead_start_len) == 0) {
amount = get_indent_lnum(curwin->w_cursor.lnum - 1);
} else if (strncmp(look, lead_middle, (size_t)lead_middle_len) == 0) {
amount = get_indent_lnum(curwin->w_cursor.lnum - 1);
break;
} else if (strncmp(ml_get(comment_pos->lnum) + comment_pos->col,
lead_start, (size_t)lead_start_len) != 0) {
// If the start comment string doesn't match with the
// start of the comment, skip this entry. XXX
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, (size_t)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) {
// skip
} 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) {
our_paren_pos = *trypos;
// If the matching paren is more than one line away, use the indent of
// a previous non-empty line that matches the same paren.
if (theline[0] == ')' && curbuf->b_ind_paren_prev) {
// Line up with the start of the matching paren line.
amount = get_indent_lnum(curwin->w_cursor.lnum - 1); // XXX
} else {
amount = -1;
for (lnum = cur_curpos.lnum - 1; lnum > our_paren_pos.lnum; lnum--) {
l = skipwhite(ml_get(lnum));
if (cin_nocode(l)) { // skip comment lines
continue;
}
if (cin_ispreproc_cont(&l, &lnum, &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 *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 *line;
int look_col;
// Ignore a '(' in front of the line that has a match before
// our matching '('.
curwin->w_cursor.lnum = our_paren_pos.lnum;
line = get_cursor_line_ptr();
look_col = (int)(look - line);
curwin->w_cursor.col = look_col + 1;
if ((trypos = findmatchlimit(NULL, ')', 0,
curbuf->b_ind_maxparen))
!= NULL
&& trypos->lnum == our_paren_pos.lnum
&& trypos->col < our_paren_pos.col) {
ignore_paren_col = trypos->col + 1;
}
curwin->w_cursor.lnum = save_lnum;
look = ml_get(our_paren_pos.lnum) + look_col;
}
if (theline[0] == ')' || (curbuf->b_ind_unclosed == 0
&& is_if_for_while == 0)
|| (!curbuf->b_ind_unclosed_noignore && *look == '('
&& ignore_paren_col == 0)) {
// If we're looking at a close paren, line up right there;
// otherwise, line up with the next (non-white) character.
// When b_ind_unclosed_wrapped is set and the matching paren is
// the last nonwhite character of the line, use either the
// indent of the current line or the indentation of the next
// outer paren and add b_ind_unclosed_wrapped (for very long
// lines).
if (theline[0] != ')') {
cur_amount = MAXCOL;
l = ml_get(our_paren_pos.lnum);
if (curbuf->b_ind_unclosed_wrapped
&& cin_ends_in(l, "(", 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 (ascii_iswhite(l[col])) {
col++;
}
if (l[col] != NUL) { // In case of trailing space
our_paren_pos.col = col;
} else {
our_paren_pos.col++;
}
}
}
// Find how indented the paren is, or the character after it
// if we did the above "if".
if (our_paren_pos.col > 0) {
getvcol(curwin, &our_paren_pos, &col, NULL, NULL);
if (cur_amount > (int)col) {
cur_amount = col;
}
}
}
if (theline[0] == ')' && curbuf->b_ind_matching_paren) {
// Line up with the start of the matching paren line.
} else if ((curbuf->b_ind_unclosed == 0 && is_if_for_while == 0)
|| (!curbuf->b_ind_unclosed_noignore
&& *look == '(' && ignore_paren_col == 0)) {
if (cur_amount != MAXCOL) {
amount = cur_amount;
}
} else {
// Add b_ind_unclosed2 for each '(' before our matching one,
// but ignore (void) before the line (ignore_paren_col).
col = our_paren_pos.col;
while ((int)our_paren_pos.col > ignore_paren_col) {
our_paren_pos.col--;
switch (*ml_get_pos(&our_paren_pos)) {
case '(':
amount += curbuf->b_ind_unclosed2;
col = our_paren_pos.col;
break;
case ')':
amount -= curbuf->b_ind_unclosed2;
col = MAXCOL;
break;
}
}
// Use b_ind_unclosed once, when the first '(' is not inside
// braces
if (col == MAXCOL) {
amount += curbuf->b_ind_unclosed;
} else {
curwin->w_cursor.lnum = our_paren_pos.lnum;
curwin->w_cursor.col = col;
if (find_match_paren_after_brace(curbuf->b_ind_maxparen)) {
amount += curbuf->b_ind_unclosed2;
} else {
if (is_if_for_while) {
amount += curbuf->b_ind_if_for_while;
} else {
amount += curbuf->b_ind_unclosed;
}
}
}
// For a line starting with ')' use the minimum of the two
// positions, to avoid giving it more indent than the previous
// lines:
// func_long_name( if (x
// arg && yy
// ) ^ not here ) ^ not here
if (cur_amount < amount) {
amount = cur_amount;
}
}
}
// add extra indent for a comment
if (cin_iscomment(theline)) {
amount += curbuf->b_ind_comment;
}
} else {
// We are inside braces, there is a { before this line at the position
// stored in tryposBrace.
// Make a copy of tryposBrace, it may point to pos_copy inside
// find_start_brace(), which may be changed somewhere.
tryposCopy = *tryposBrace;
tryposBrace = &tryposCopy;
trypos = tryposBrace;
ourscope = trypos->lnum;
start = ml_get(ourscope);
// Now figure out how indented the line is in general.
// If the brace was at the start of the line, we use that;
// otherwise, check out the indentation of the line as
// a whole and then add the "imaginary indent" to that.
look = skipwhite(start);
if (*look == '{') {
getvcol(curwin, trypos, &col, NULL, NULL);
amount = col;
if (*start == '{') {
start_brace = BRACE_IN_COL0;
} else {
start_brace = BRACE_AT_START;
}
} else {
// That opening brace might have been on a continuation
// line. If so, find the start of the line.
curwin->w_cursor.lnum = ourscope;
// Position the cursor over the rightmost paren, so that
// matching it will take us back to the start of the line.
lnum = ourscope;
if (find_last_paren(start, '(', ')')
&& (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) {
lnum = trypos->lnum;
}
// It could have been something like
// case 1: if (asdf &&
// ldfd) {
// }
if ((curbuf->b_ind_js || curbuf->b_ind_keep_case_label)
&& cin_iscase(skipwhite(get_cursor_line_ptr()), false)) {
amount = get_indent();
} else if (curbuf->b_ind_js) {
amount = get_indent_lnum(lnum);
} else {
amount = skip_label(lnum, &l);
}
start_brace = BRACE_AT_END;
}
// For Javascript check if the line starts with "key:".
bool js_cur_has_key = curbuf->b_ind_js ? cin_has_js_key(theline) : false;
// If we're looking at a closing brace, that's where
// we want to be. Otherwise, add the amount of room
// that an indent is supposed to be.
if (theline[0] == '}') {
// they may want closing braces to line up with something
// other than the open brace. indulge them, if so.
amount += curbuf->b_ind_close_extra;
} else {
// If we're looking at an "else", try to find an "if"
// to match it with.
// If we're looking at a "while", try to find a "do"
// to match it with.
lookfor = LOOKFOR_INITIAL;
if (cin_iselse(theline)) {
lookfor = LOOKFOR_IF;
} else if (cin_iswhileofdo(theline, cur_curpos.lnum)) { // XXX
lookfor = LOOKFOR_DO;
}
if (lookfor != LOOKFOR_INITIAL) {
curwin->w_cursor.lnum = cur_curpos.lnum;
if (find_match(lookfor, ourscope) == OK) {
amount = get_indent(); // XXX
goto theend;
}
}
// We get here if we are not on an "while-of-do" or "else" (or
// failed to find a matching "if").
// Search backwards for something to line up with.
// First set amount for when we don't find anything.
// if the '{' is _really_ at the left margin, use the imaginary
// location of a left-margin brace. Otherwise, correct the
// location for b_ind_open_extra.
if (start_brace == BRACE_IN_COL0) { // '{' is in column 0
amount = curbuf->b_ind_open_left_imag;
lookfor_cpp_namespace = true;
} else if (start_brace == BRACE_AT_START
&& lookfor_cpp_namespace) { // '{' is at start
lookfor_cpp_namespace = true;
} else {
if (start_brace == BRACE_AT_END) { // '{' is at end of line
amount += curbuf->b_ind_open_imag;
l = skipwhite(get_cursor_line_ptr());
if (cin_is_cpp_namespace(l)) {
amount += curbuf->b_ind_cpp_namespace;
} else 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;
while (true) {
curwin->w_cursor.lnum--;
curwin->w_cursor.col = 0;
// If we went all the way back to the start of our scope, line
// up with it.
if (curwin->w_cursor.lnum <= ourscope) {
// We reached end of scope:
// If looking for a enum or structure initialization
// go further back:
// If it is an initializer (enum xxx or xxx =), then
// don't add ind_continuation, otherwise it is a variable
// declaration:
// int x,
// here; <-- add ind_continuation
if (lookfor == LOOKFOR_ENUM_OR_INIT) {
if (curwin->w_cursor.lnum == 0
|| curwin->w_cursor.lnum
< ourscope - curbuf->b_ind_maxparen) {
// nothing found (abuse curbuf->b_ind_maxparen as
// limit) assume terminated line (i.e. a variable
// initialization)
if (cont_amount > 0) {
amount = cont_amount;
} else if (!curbuf->b_ind_js) {
amount += ind_continuation;
}
break;
}
// 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 = get_cursor_line_ptr();
// 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(vim): 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 = get_cursor_line_ptr();
// 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 = get_cursor_line_ptr();
// If this is a switch() label, may line up relative to that.
// If this is a C++ scope declaration, do the same.
bool iscase = cin_iscase(l, false);
if (iscase || cin_isscopedecl(l)) {
// we are only looking for cpp base class
// declaration/initialization any longer
if (lookfor == LOOKFOR_CPP_BASECLASS) {
break;
}
// When looking for a "do" we are not interested in
// labels.
if (whilelevel > 0) {
continue;
}
// case xx:
// c = 99 + <- this indent plus continuation
// -> here;
if (lookfor == LOOKFOR_UNTERM || lookfor == LOOKFOR_ENUM_OR_INIT) {
if (cont_amount > 0) {
amount = cont_amount;
} else {
amount += ind_continuation;
}
break;
}
// case xx: <- line up with this case
// x = 333;
// case yy:
if ((iscase && lookfor == LOOKFOR_CASE)
|| (iscase && lookfor_break)
|| (!iscase && lookfor == LOOKFOR_SCOPEDECL)) {
// Check that this case label is not for another
// switch()
// XXX
if ((trypos = find_start_brace()) == NULL
|| trypos->lnum == ourscope) {
amount = get_indent(); // XXX
break;
}
continue;
}
n = get_indent_nolabel(curwin->w_cursor.lnum); // XXX
// case xx: if (cond) <- line up with this if
// y = y + 1;
// -> s = 99;
//
// case xx:
// if (cond) <- line up with this line
// y = y + 1;
// -> s = 99;
if (lookfor == LOOKFOR_TERM) {
if (n) {
amount = n;
}
if (!lookfor_break) {
break;
}
}
// case xx: x = x + 1; <- line up with this x
// -> y = y + 1;
//
// case xx: if (cond) <- line up with this if
// -> y = y + 1;
if (n) {
amount = n;
l = after_label(get_cursor_line_ptr());
if (l != NULL && cin_is_cinword(l)) {
if (theline[0] == '{') {
amount += curbuf->b_ind_open_extra;
} else {
amount += curbuf->b_ind_level
+ curbuf->b_ind_no_brace;
}
}
break;
}
// Try to get the indent of a statement before the switch
// label. If nothing is found, line up relative to the
// switch label.
// break; <- may line up with this line
// case xx:
// -> y = 1;
scope_amount = get_indent() + (iscase // XXX
? curbuf->b_ind_case_code
: curbuf->b_ind_scopedecl_code);
lookfor = curbuf->b_ind_case_break
? LOOKFOR_NOBREAK : LOOKFOR_ANY;
continue;
}
// Looking for a switch() label or C++ scope declaration,
// ignore other lines, skip {}-blocks.
if (lookfor == LOOKFOR_CASE || lookfor == LOOKFOR_SCOPEDECL) {
if (find_last_paren(l, '{', '}')
&& (trypos = find_start_brace()) != NULL) {
curwin->w_cursor.lnum = trypos->lnum + 1;
curwin->w_cursor.col = 0;
}
continue;
}
// Ignore jump labels with nothing after them.
if (!curbuf->b_ind_js && cin_islabel()) {
l = after_label(get_cursor_line_ptr());
if (l == NULL || cin_nocode(l)) {
continue;
}
}
// Ignore #defines, #if, etc.
// Ignore comment and empty lines.
// (need to get the line again, cin_islabel() may have
// unlocked it)
l = get_cursor_line_ptr();
if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum, &amount)
|| cin_nocode(l)) {
continue;
}
// Are we at the start of a cpp base class declaration or
// constructor initialization?
// XXX
n = 0;
if (lookfor != LOOKFOR_TERM && curbuf->b_ind_cpp_baseclass > 0) {
n = cin_is_cpp_baseclass(&cache_cpp_baseclass);
l = get_cursor_line_ptr();
}
if (n) {
if (lookfor == LOOKFOR_UNTERM) {
if (cont_amount > 0) {
amount = cont_amount;
} else {
amount += ind_continuation;
}
} else if (theline[0] == '{') {
// Need to find start of the declaration.
lookfor = LOOKFOR_UNTERM;
ind_continuation = 0;
continue;
} else {
// XXX
amount = get_baseclass_amount(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 = false; // only check the first line
if (curbuf->b_ind_js && terminated == ',') {
// For Javascript we might be inside an object:
// key: something, <- align with this
// key: something
// or:
// key: something + <- align with this
// something,
// key: something
lookfor = LOOKFOR_JS_KEY;
}
}
if (lookfor == LOOKFOR_JS_KEY && cin_has_js_key(l)) {
amount = get_indent();
break;
}
if (lookfor == LOOKFOR_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;
}
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 = get_cursor_line_ptr();
// 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 = get_cursor_line_ptr();
}
if (trypos != NULL) {
// Check if we are on a case label now. This is
// handled above.
// case xx: if ( asdf &&
// asdf)
curwin->w_cursor = *trypos;
l = get_cursor_line_ptr();
if (cin_iscase(l, false) || cin_isscopedecl(l)) {
curwin->w_cursor.lnum++;
curwin->w_cursor.col = 0;
continue;
}
}
// Skip over continuation lines to find the one to get the
// indent from
// char *usethis = "bla{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 = get_cursor_line_ptr();
}
// Get indent and pointer to text for current line,
// ignoring any jump label. XXX
if (curbuf->b_ind_js) {
cur_amount = get_indent();
} else {
cur_amount = skip_label(curwin->w_cursor.lnum, &l);
}
// If this is just above the line we are indenting, and it
// starts with a '{', line it up with this line.
// while (not)
// -> {
// }
if (terminated != ',' && lookfor != LOOKFOR_TERM
&& theline[0] == '{') {
amount = cur_amount;
// Only add b_ind_open_extra when the current line
// doesn't start with a '{', which must have a match
// in the same line (scope is the same). Probably:
// { 1, 2 },
// -> { 3, 4 }
if (*skipwhite(l) != '{') {
amount += curbuf->b_ind_open_extra;
}
if (curbuf->b_ind_cpp_baseclass && !curbuf->b_ind_js) {
// have to look back, whether it is a cpp base
// class declaration or initialization
lookfor = LOOKFOR_CPP_BASECLASS;
continue;
}
break;
}
// Check if we are after an "if", "while", etc.
// Also allow " } else".
if (cin_is_cinword(l) || cin_iselse(skipwhite(l))) {
// Found an unterminated line after an if (), line up
// with the last one.
// if (cond)
// 100 +
// -> here;
if (lookfor == LOOKFOR_UNTERM
|| lookfor == LOOKFOR_ENUM_OR_INIT) {
if (cont_amount > 0) {
amount = cont_amount;
} else {
amount += ind_continuation;
}
break;
}
// If this is just above the line we are indenting, we
// are finished.
// while (not)
// -> here;
// Otherwise this indent can be used when the line
// before this is terminated.
// yyy;
// if (stat)
// while (not)
// xxx;
// -> here;
amount = cur_amount;
if (theline[0] == '{') {
amount += curbuf->b_ind_open_extra;
}
if (lookfor != LOOKFOR_TERM) {
amount += curbuf->b_ind_level
+ curbuf->b_ind_no_brace;
break;
}
// Special trick: when expecting the while () after a
// do, line up with the while()
// do
// x = 1;
// -> here
l = skipwhite(get_cursor_line_ptr());
if (cin_isdo(l)) {
if (whilelevel == 0) {
break;
}
whilelevel--;
}
// When searching for a terminated line, don't use the
// one between the "if" and the matching "else".
// Need to use the scope of this "else". XXX
// If whilelevel != 0 continue looking for a "do {".
if (cin_iselse(l) && whilelevel == 0) {
// If we're looking at "} else", let's make sure we
// find the opening brace of the enclosing scope,
// not the one from "if () {".
if (*l == '}') {
curwin->w_cursor.col =
(colnr_T)(l - get_cursor_line_ptr()) + 1;
}
if ((trypos = find_start_brace()) == NULL
|| find_match(LOOKFOR_IF, trypos->lnum)
== FAIL) {
break;
}
}
} else {
// 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.
// 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 = get_cursor_line_ptr();
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((uint8_t)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++;
} else {
// 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.
// Skip single break line, if before a switch label. It
// may be lined up with the case label.
if (lookfor == LOOKFOR_NOBREAK
&& cin_isbreak(skipwhite(get_cursor_line_ptr()))) {
lookfor = LOOKFOR_ANY;
continue;
}
// Handle "do {" line.
if (whilelevel > 0) {
l = cin_skipcomment(get_cursor_line_ptr());
if (cin_isdo(l)) {
amount = get_indent(); // XXX
whilelevel--;
continue;
}
}
// Found a terminated line above an unterminated line. Add
// the amount for a continuation line.
// x = 1;
// y = foo +
// -> here;
// or
// int x = 1;
// int foo,
// -> here;
if (lookfor == LOOKFOR_UNTERM
|| lookfor == LOOKFOR_ENUM_OR_INIT) {
if (cont_amount > 0) {
amount = cont_amount;
} else {
amount += ind_continuation;
}
break;
}
// Found a terminated line above a terminated line or "if"
// etc. line. Use the amount of the line below us.
// x = 1; x = 1;
// if (asdf) y = 2;
// while (asdf) ->here;
// here;
// ->foo;
if (lookfor == LOOKFOR_TERM) {
if (!lookfor_break && whilelevel == 0) {
break;
}
} else {
// First line above the one we're indenting is terminated.
// To know what needs to be done look further backward for
// a terminated line.
// position the cursor over the rightmost paren, so
// that matching it will take us back to the start of
// the line. Helps for:
// func(asdr,
// asdfasdf);
// here;
term_again:
l = get_cursor_line_ptr();
if (find_last_paren(l, '(', ')')
&& (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) {
// Check if we are on a case label now. This is
// handled above.
// case xx: if ( asdf &&
// asdf)
curwin->w_cursor = *trypos;
l = get_cursor_line_ptr();
if (cin_iscase(l, false) || cin_isscopedecl(l)) {
curwin->w_cursor.lnum++;
curwin->w_cursor.col = 0;
continue;
}
}
// When aligning with the case statement, don't align
// with a statement after it.
// case 1: { <-- don't use this { position
// stat;
// }
// case 2:
// stat;
// }
iscase = curbuf->b_ind_keep_case_label && cin_iscase(l, false);
// Get indent and pointer to text for current line,
// ignoring any jump label.
amount = skip_label(curwin->w_cursor.lnum, &l);
if (theline[0] == '{') {
amount += curbuf->b_ind_open_extra;
}
// See remark above: "Only add b_ind_open_extra.."
l = skipwhite(l);
if (*l == '{') {
amount -= curbuf->b_ind_open_extra;
}
lookfor = iscase ? LOOKFOR_ANY : LOOKFOR_TERM;
// When a terminated line starts with "else" skip to
// the matching "if":
// else 3;
// indent this;
// Need to use the scope of this "else". XXX
// If whilelevel != 0 continue looking for a "do {".
if (lookfor == LOOKFOR_TERM
&& *l != '}'
&& cin_iselse(l)
&& whilelevel == 0) {
if ((trypos = find_start_brace()) == NULL
|| find_match(LOOKFOR_IF, trypos->lnum)
== FAIL) {
break;
}
continue;
}
// If we're at the end of a block, skip to the start of
// that block.
l = get_cursor_line_ptr();
if (find_last_paren(l, '{', '}') // XXX
&& (trypos = find_start_brace()) != NULL) {
curwin->w_cursor = *trypos;
// if not "else {" check for terminated again
// but skip block for "} else {"
l = cin_skipcomment(get_cursor_line_ptr());
if (*l == '}' || !cin_iselse(l)) {
goto term_again;
}
curwin->w_cursor.lnum++;
curwin->w_cursor.col = 0;
}
}
}
}
}
}
// add extra indent for a comment
if (cin_iscomment(theline)) {
amount += curbuf->b_ind_comment;
}
// subtract extra left-shift for jump labels
if (curbuf->b_ind_jump_label > 0 && original_line_islabel) {
amount -= curbuf->b_ind_jump_label;
}
goto theend;
}
// Ok -- we're not inside any sort of structure at all!
//
// this means we're at the top level, and everything should
// basically just match where the previous line is, except
// for the lines immediately following a function declaration,
// which are K&R-style parameters and need to be indented.
// if our line starts with an open brace, forget about any
// prevailing indent and make sure it looks like the start
// of a function
if (theline[0] == '{') {
amount = curbuf->b_ind_first_open;
goto theend;
}
// If the NEXT line is a function declaration, the current
// line needs to be indented as a function type spec.
// Don't do this if the current line looks like a comment or if the
// current line is terminated, ie. ends in ';', or if the current line
// contains { or }: "void f() {\n if (1)"
if (cur_curpos.lnum < curbuf->b_ml.ml_line_count
&& !cin_nocode(theline)
&& vim_strchr(theline, '{') == NULL
&& vim_strchr(theline, '}') == NULL
&& !cin_ends_in(theline, ":", NULL)
&& !cin_ends_in(theline, ",", 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 = get_cursor_line_ptr();
// 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 = 0;
if (curbuf->b_ind_cpp_baseclass != 0) {
n = cin_is_cpp_baseclass(&cache_cpp_baseclass);
l = get_cursor_line_ptr();
}
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;
if (cin_ends_in(l, ",", NULL)
|| (*l != NUL && (n = (uint8_t)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 = get_cursor_line_ptr();
// Finding the closing '}' of a previous function. Put
// current line at the left margin. For when 'cino' has "fs".
if (*skipwhite(l) == '}') {
break;
}
// (matching {)
// If the previous line ends on '};' (maybe followed by
// comments) align at column 0. For example:
// char *string_array[] = { "foo",
// / * x * / "b};ar" }; / * foobar * /
if (cin_ends_in(l, "};", NULL)) {
break;
}
// If the previous line ends on '[' we are probably in an
// array constant:
// something = [
// 234, <- extra indent
if (cin_ends_in(l, "[", 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, "}", 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, ";", NULL)) {
l = ml_get(curwin->w_cursor.lnum - 1);
if (cin_ends_in(l, ",", NULL)
|| (*l != NUL && l[strlen(l) - 1] == '\\')) {
break;
}
l = get_cursor_line_ptr();
}
// Doesn't look like anything interesting -- so just
// use the indent of this line.
//
// Position the cursor over the rightmost paren, so that
// matching it will take us back to the start of the line.
(void)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;
xfree(linecopy);
return amount;
}
static int find_match(int lookfor, linenr_T ourscope)
{
const char *look;
pos_T *theirscope;
const char *mightbeif;
int elselevel;
int whilelevel;
if (lookfor == LOOKFOR_IF) {
elselevel = 1;
whilelevel = 0;
} else {
elselevel = 0;
whilelevel = 1;
}
curwin->w_cursor.col = 0;
while (curwin->w_cursor.lnum > ourscope + 1) {
curwin->w_cursor.lnum--;
curwin->w_cursor.col = 0;
look = cin_skipcomment(get_cursor_line_ptr());
if (!cin_iselse(look)
&& !cin_isif(look)
&& !cin_isdo(look) // XXX
&& !cin_iswhileofdo(look, curwin->w_cursor.lnum)) {
continue;
}
// if we've gone outside the braces entirely,
// we must be out of scope...
theirscope = find_start_brace(); // XXX
if (theirscope == NULL) {
break;
}
// and if the brace enclosing this is further
// back than the one enclosing the else, we're
// out of luck too.
if (theirscope->lnum < ourscope) {
break;
}
// and if they're enclosed in a *deeper* brace,
// then we can ignore it because it's in a
// different scope...
if (theirscope->lnum > ourscope) {
continue;
}
// if it was an "else" (that's not an "else if")
// then we need to go back to another if, so
// increment elselevel
look = cin_skipcomment(get_cursor_line_ptr());
if (cin_iselse(look)) {
mightbeif = cin_skipcomment(look + 4);
if (!cin_isif(mightbeif)) {
elselevel++;
}
continue;
}
// if it was a "while" then we need to go back to
// another "do", so increment whilelevel. XXX
if (cin_iswhileofdo(look, curwin->w_cursor.lnum)) {
whilelevel++;
continue;
}
// If it's an "if" decrement elselevel
look = cin_skipcomment(get_cursor_line_ptr());
if (cin_isif(look)) {
elselevel--;
// When looking for an "if" ignore "while"s that
// get in the way.
if (elselevel == 0 && lookfor == LOOKFOR_IF) {
whilelevel = 0;
}
}
// If it's a "do" decrement whilelevel
if (cin_isdo(look)) {
whilelevel--;
}
// if we've used up all the elses, then
// this must be the if that we want!
// match the indent level of that if.
if (elselevel <= 0 && whilelevel <= 0) {
return OK;
}
}
return FAIL;
}
// Do C or expression indenting on the current line.
void do_c_expr_indent(void)
{
if (*curbuf->b_p_inde != NUL) {
fixthisline(get_expr_indent);
} else {
fixthisline(get_c_indent);
}
}