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langmode_clike.c
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langmode_clike.c
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#include "def.h"
#include "macro.h"
#include "key.h"
/*
* Mg3a: A mode for C-like languages like C, Perl, Java etc.
*
* Written by Bengt Larsson. It is public domain.
*
* paaguti: TODO: integrate comment_begin and comment_end variables
*/
#ifdef LANGMODE_CLIKE
#define CLIKE_CCOMMENTS 0x00001 // Parse C-style comments ("/*", "*/" and "//").
#define CLIKE_PREPROC 0x00002 // Parse C preprocessor statements
#define CLIKE_STRINGS 0x00004 // Parse C strings, character constants and parenthesis levels.
#define CLIKE_WHITESMITH 0x00008 // Whitesmith/Ratliff formatting
#define CLIKE_GNU 0x00010 // Gnu formatting
#define CLIKE_KEYWORDS 0x00020 // C keyword heuristics for if, else, for, while statements
#define CLIKE_CASE 0x00040 // C keyword heuristics for case, default statements.
#define CLIKE_HASHCOMMENT 0x00080 // Parse '#' as comment to end of line
#define CLIKE_JSCOMMENT 0x00100 // Parse "<!--" as comment to end of line
#define CLIKE_ANCHOR 0x00200 // Find anchors
#define CLIKE_CPP 0x00400 // Parse C++-style "public:", "private:", "protected:"
#define CLIKE_NESTED 0x00800 // Make "/*".."*/" comments nested.
#define CLIKE_IFNOPAREN 0x01000 // Keyword heuristics for "if", "else if", "for", "while",
// "switch" without parentheses.
#define CLIKE_RAW 0x02000 // Parse Go raw strings
#define CLIKE_LABELS 0x04000 // Parse C-style labels
#define CLIKE_SIMPLELABEL 0x08000 // Simplistic labels
#define CLIKE_SWIFT 0x10000 // Swift keywords
#define CLIKE_CSHARP 0x20000 // C# keywords and literal strings
#define COLUMN_ERROR (-1) // Column overflow
#define NO_COLUMN (-2) // No column adjustment
#define STATE_NORMAL 0 // Parse states
#define STATE_STRING 1
#define STATE_CHARCONST 2
#define STATE_EOLCOMMENT 3
#define STATE_RAWSTRING 4
#define allopt(opt, test) (((opt) & (test)) == (test))
#define uchar unsigned char // In case there is a typedef
typedef struct {
LINE *lp;
ssize_t parenlevel;
ssize_t bracelevel;
ssize_t bracketlevel;
ssize_t incomment;
ssize_t endofcomment;
INT firstindex;
INT lastindex;
INT scanlen;
int lines;
uchar first;
uchar last;
uchar lastparen;
uchar single;
uchar seencontent;
uchar seenstartcomment;
uchar seenendcomment;
} parseresult;
INT selfinsert(INT f, INT n);
INT forwline(INT f, INT n);
INT clike_options = 0; // Option bits for C-like mode
INT clike_lang = 0; // Clike language bundle
INT clike_style = 0; // Clike style number
static const int debug = 0;
static INT parsecount = 0, commentcount = 0;
static int is_label(const parseresult *rp, INT opt, int strong);
/*
* Utility function.
*/
static int
is_blank(INT c)
{
return c == ' ' || c == '\t' || c == '\f';
}
/*
* Get clike options
*/
static INT
get_clike_options()
{
INT opt, lang;
static const uint_least32_t opts[] = {
/* C */
(CLIKE_CCOMMENTS|CLIKE_PREPROC|CLIKE_STRINGS|CLIKE_KEYWORDS|
CLIKE_CASE|CLIKE_ANCHOR|CLIKE_CPP|CLIKE_LABELS),
/* Perl */
0,
/* Java */
(CLIKE_CCOMMENTS|CLIKE_STRINGS|CLIKE_KEYWORDS|CLIKE_CASE|
CLIKE_ANCHOR),
/* C# */
(CLIKE_CCOMMENTS|CLIKE_PREPROC|CLIKE_STRINGS|CLIKE_KEYWORDS|
CLIKE_CASE|CLIKE_ANCHOR|CLIKE_LABELS|CLIKE_CSHARP),
/* JavaScript */
(CLIKE_KEYWORDS|CLIKE_CASE),
/* Swift */
(CLIKE_CCOMMENTS|CLIKE_NESTED|CLIKE_STRINGS|CLIKE_CASE|
CLIKE_ANCHOR|CLIKE_IFNOPAREN|CLIKE_SWIFT),
/* Go */
(CLIKE_CCOMMENTS|CLIKE_STRINGS|CLIKE_CASE|CLIKE_ANCHOR|
CLIKE_IFNOPAREN|CLIKE_RAW|CLIKE_LABELS),
};
opt = get_variable(curbp->localvar.v.clike_options, clike_options) & 0xffff;
lang = get_variable(curbp->localvar.v.clike_lang, clike_lang);
if (lang != 0) opt &= (CLIKE_WHITESMITH|CLIKE_GNU);
if (lang >= 1 && lang <= (INT)(sizeof opts/sizeof opts[0])) {
opt |= opts[lang - 1];
}
return opt;
}
/*
* Get clike style number
*/
static INT
get_clike_style()
{
return get_variable(curbp->localvar.v.clike_style, clike_style);
}
/*
* Parse a line in useful ways, with comments and strings.
*/
#define reset_parse(r) do {\
r.first = ' ';\
r.last = ' ';\
r.lastparen= ' ';\
r.firstindex = len;\
r.lastindex = -1;\
r.scanlen = len;\
r.seenstartcomment = 0;\
r.seenendcomment = 0;\
r.incomment = 0;\
r.seencontent = 0;\
r.parenlevel = 0;\
r.bracelevel = 0;\
r.bracketlevel = 0;\
r.lines = 1;} while (0)
static void
parseline(LINE *lp, INT opt, parseresult *result)
{
int c, c2;
INT i, j, len, index;
parseresult r;
if (debug) parsecount++;
r.lp = lp;
len = llength(lp);
r.endofcomment = 0; // Not reset by reset_parse
reset_parse(r);
for (i = 0; i < len; i++) {
c = lgetc(lp, i);
c2 = (i < len - 1) ? lgetc(lp, i + 1) : '\n';
index = i;
if (!ISDELIM(c)) {
/* Nothing */
} else if ((opt & CLIKE_CCOMMENTS) && c == '/') {
if (c2 == '*') {
r.seenstartcomment = 1;
r.incomment = 1;
for (i += 3; i < len; i++) {
if ((opt & CLIKE_NESTED) &&
lgetc(lp, i - 1) == '/' && lgetc(lp, i) == '*')
{
r.incomment++;
i++;
} else if (lgetc(lp, i - 1) == '*' && lgetc(lp, i) == '/') {
if (--r.incomment == 0) break;
i++;
}
}
if (r.incomment) break;
r.seenendcomment = 1;
continue;
} else if (c2 == '/') {
r.scanlen = i;
break;
}
} else if ((opt & CLIKE_CCOMMENTS) && c == '*' && c2 == '/') {
if (r.endofcomment == 0 || (opt & CLIKE_NESTED)) {
reset_parse(r);
r.endofcomment++;
r.seenendcomment = 1;
i++;
continue;
}
} else if ((opt & CLIKE_HASHCOMMENT) && c == '#') {
r.scanlen = i;
break;
} else if ((opt & CLIKE_JSCOMMENT) && c == '<' && c2 == '!' &&
i < len - 3 && lgetc(lp, i + 2) == '-' && lgetc(lp, i + 3) == '-')
{
r.scanlen = i;
break;
} else if ((opt & CLIKE_RAW) && c == '`') {
for (j = i + 1; j < len; j++) {
if (lgetc(lp, j) == '`') {
i = j;
break;
}
}
} else if ((opt & CLIKE_CSHARP) && c == '@' && c2 == '"') {
i++;
for (j = i + 1; j < len; j++) {
if (lgetc(lp, j) == '"') {
if (j < len - 1 && lgetc(lp, j + 1) == '"') {
j++;
} else {
i = j;
break;
}
}
}
} else if (opt & CLIKE_STRINGS) {
switch (c) {
case '"':
case '\'':
for (j = i + 1; j < len; j++) {
c2 = lgetc(lp, j);
if (c2 == '\\') {
j++;
} else if (c2 == c) {
i = j;
break;
}
}
break;
case '(': r.parenlevel--; break;
case ')': r.parenlevel++; r.lastparen = c; break;
case '{': r.bracelevel--; break;
case '}': r.bracelevel++; break;
case '[': r.bracketlevel--; break;
case ']': r.bracketlevel++; r.lastparen = c; break;
}
}
if (!is_blank(c)) {
if (r.first == ' ') {
r.first = c;
r.firstindex = index;
}
r.last = c;
r.lastindex = index;
}
}
r.seencontent = (r.first != ' ');
r.single = (r.firstindex == r.lastindex);
*result = r;
}
/*
* Find the first non-blank line before "lp". Return the line and the
* parsed result of that line. "incomment" deals with starting from a
* line that has an end of a block comment followed by content.
*/
static LINE *
findnonblank(LINE *lp, INT opt, parseresult *result, ssize_t incomment)
{
int count = 0;
parseresult r;
LINE *blp = curbp->b_linep;
if (lp != blp) lp = lback(lp);
for (; lp != blp; lp = lback(lp)) {
if (count++ >= 10000) {
lp = blp;
break;
}
parseline(lp, opt, &r);
if (opt & CLIKE_CCOMMENTS) {
if (opt & CLIKE_NESTED) {
if (incomment > r.incomment) {
incomment += r.endofcomment - r.incomment;
continue;
}
incomment += r.endofcomment - r.incomment;
} else {
if (incomment) {
if (r.seenstartcomment) {
incomment = 0;
} else {
continue;
}
}
if (r.endofcomment) incomment = 1;
}
}
if (!r.seencontent) continue;
if ((opt & CLIKE_PREPROC) && r.first == '#') continue;
if (r.last == ':' && is_label(&r, opt, 1)) continue;
break;
}
if (result) {
if (lp == blp) parseline(lp, opt, &r);
r.lines = count;
*result = r;
}
return lp;
}
/*
* Parse a possibly parenthesized statement before line "lp", and
* return the first line and the parsed, possibly multiline, result.
* The last unbalanced ']' or ')' is used for grouping.
*/
static LINE *
parse_statement(LINE *lp, INT opt, parseresult *result, ssize_t incomment)
{
parseresult r, r2;
LINE *lp2;
int usebrackets;
lp = findnonblank(lp, opt, &r, incomment);
usebrackets = (r.lastparen == ']' && r.bracketlevel > 0);
if (usebrackets || r.parenlevel > 0) {
while (r.lines < 10000) {
lp2 = findnonblank(lp, opt, &r2, r.endofcomment);
if (lp2 == curbp->b_linep) break;
lp = lp2;
r.lp = lp2;
r.first = r2.first;
r.firstindex = r2.firstindex;
r.lastindex = r2.lastindex;
r.single = 0;
r.parenlevel += r2.parenlevel;
r.bracelevel += r2.bracelevel;
r.bracketlevel += r2.bracketlevel;
r.endofcomment = r2.endofcomment;
r.lines += r2.lines;
if (r.firstindex == 0) break;
if (usebrackets ? r.bracketlevel <= 0 : r.parenlevel <= 0) break;
}
}
*result = r;
return lp;
}
/*
* Check if c is one of the characters
*/
static int
isoneof(INT c, char *s)
{
for (; *s; s++) if (c == CHARMASK(*s)) return 1;
return 0;
}
/*
* Is left parenthesis.
*/
static int
isleftparen(INT c)
{
return c == '{' || c == '(' || c == '[';
}
/*
* Is right parenthesis.
*/
static int
isrightparen(INT c)
{
return c == '}' || c == ')' || c == ']';
}
/*
* Increase the tab level and check for overflow
*/
static INT
increasetab(INT col, INT tabsize)
{
if (col < 0) return col; // Error return
if (tabsize <= 0) return col; // No change
col -= col % tabsize;
if (col > MAXINT - tabsize) {
column_overflow();
return COLUMN_ERROR;
}
return col + tabsize;
}
/*
* Decrease the tab level
*/
static INT
decreasetab(INT col, INT tabsize)
{
INT decrease;
if (col < 0) return col; // Error return
if (tabsize <= 0) return col; // No change
if (col > 0) {
decrease = col % tabsize;
if (decrease == 0) decrease = tabsize;
col -= decrease;
}
return col;
}
/*
* Identifier character
*/
static int
ident(INT c)
{
return ISWORD(c) || c == '_';
}
/*
* Check if one of the words, delimited by "," start the line. An
* embedded space in a word means a word boundary and arbitrary
* whitespace. "$" means last non-whitespace on the line.
*/
static int
firstword(const parseresult *rp, char *inwords)
{
INT i, j, k, len;
LINE *lp = rp->lp;
unsigned char *words = (unsigned char *)inwords;
i = rp->firstindex;
len = rp->lastindex + 1;
while (*words) {
for (j = i, k = 0; j < len; j++, k++) {
if (words[k] == '$') {
break;
} else if (words[k] == 0 || words[k] == ',') {
if (!ident(lgetc(lp, j)) || !ident(words[k - 1])) {
return 1;
} else {
break;
}
} else if (words[k] == ' ') {
if (is_blank(lgetc(lp, j))) {
while (j < len - 1 && is_blank(lgetc(lp, j + 1))) j++;
} else if (!ident(lgetc(lp, j)) || !ident(words[k - 1])) {
j--;
} else {
break;
}
} else if (words[k] != lgetc(lp, j)) {
break;
}
}
if (j == len && (words[k] == 0 || words[k] == ',' || words[k] == '$')) return 1;
while (*words && *words++ != ',') {}
}
return 0;
}
/*
* Special cases for case statements
*/
static int
case_statement(const parseresult *rp)
{
return isoneof(rp->first, "cd") && isoneof(rp->last, ":;}{") &&
firstword(rp, "case,default :");
}
/*
* Special cases for statements without braces.
*/
static int
keywordspecial(const parseresult *rp, INT opt, int full)
{
if (rp->last == ')' || !full) {
if (opt & CLIKE_CSHARP) {
return firstword(rp, "if (,else if (,} else if (,while (,for (,foreach (");
} else {
return firstword(rp, "if (,else if (,} else if (,while (,for (");
}
} else {
return firstword(rp, "else$,} else$");
}
}
/*
* Test for C++ access specifiers
*/
static int
labelspecial(const parseresult *rp)
{
return firstword(rp, "public :,private :,protected :");
}
/*
* Test for parenthesis-less keywords. Swift has evolved.
*/
static int
noparen_keywords(const parseresult *rp, INT opt)
{
if (opt & CLIKE_SWIFT) {
return firstword(rp, "if,else,} else,for,while,switch,guard,catch,} catch");
} else {
return firstword(rp, "if,else,} else,for,while,switch");
}
}
/*
* Check for a label. If we are doing "case"-statements, "default:" is
* not a label. "something::" is not a label.
*
* "strong" checks that the line is nothing but label.
*/
static int
is_label(const parseresult *rp, INT opt, int strong)
{
parseresult r = *rp;
INT i;
if (!(opt & CLIKE_LABELS)) return 0;
if (!ident(r.first) || ISDIGIT(r.first)) return 0;
for (i = r.firstindex + 1; i <= r.lastindex; i++) if (!ident(lgetc(r.lp, i))) break;
for (; i <= r.lastindex; i++) if (!is_blank(lgetc(r.lp, i))) break;
if (i > r.lastindex || lgetc(r.lp, i) != ':') return 0;
if (i < r.lastindex && lgetc(r.lp, i + 1) == ':') return 0;
if (strong && i != r.lastindex) return 0;
if ((opt & CLIKE_CASE) && firstword(rp, "default :")) return 0;
return 1;
}
/*
* Find an anchor before line "lp". An anchor is the statement of the
* '{' of the enclosing block, or a case statement at the same
* bracelevel. When in trouble, parse just one statement back.
*/
static LINE *
findanchor(LINE *lp, INT opt, parseresult *result)
{
parseresult r, r2;
int count = 0;
LINE *lp2, *blp = curbp->b_linep;
ssize_t bracelevel;
parseline(lp, opt, &r);
lp2 = lp;
bracelevel = 0;
r2.endofcomment = r.endofcomment;
while (1) {
lp2 = parse_statement(lp2, opt, &r2, r2.endofcomment);
count += r2.lines;
if (lp2 == blp) break;
if (count > 10000) {
return parse_statement(lp, opt, result, r.endofcomment);
}
bracelevel += r2.bracelevel;
if (opt & CLIKE_CASE) {
if (r.first != '}' && bracelevel == 0 && case_statement(&r2)) {
// Neutralize any braces
r2.last = ';';
r2.bracelevel = 0;
break;
}
}
if (bracelevel < 0 || (r2.firstindex == 0 && isoneof(r2.last, "})"))) break;
}
r2.lines = count;
*result = r2;
return lp2;
}
/*
* Figure out the normal column for the statement in "rp", even for
* multiline "if", "while" etc. expressions without parentheses.
* Multi-line braced expressions within such an expression are not
* allowed.
*/
static INT
noparen_getcolumn(const parseresult *rp, INT opt)
{
LINE *blp = curbp->b_linep;
parseresult r;
if ( (isoneof(rp->first, "{}") && rp->single) ||
((opt & CLIKE_CASE) && case_statement(rp)) ||
noparen_keywords(rp, opt))
{
return getfullcolumn(curwp, rp->lp, rp->firstindex);
}
r = *rp; // Tag:noparen
while (1) {
parse_statement(r.lp, opt, &r, r.endofcomment);
if (r.lp == blp || (r.first == '}' && !r.single) - r.bracelevel != 0 ||
r.parenlevel < 0 || r.bracketlevel < 0 ||
((opt & CLIKE_CASE) && case_statement(&r)))
{
return getfullcolumn(curwp, rp->lp, rp->firstindex);
} else if (noparen_keywords(&r, opt)) {
return getfullcolumn(curwp, r.lp, r.firstindex);
} else if (r.firstindex == 0 || r.bracelevel != 0) {
return getfullcolumn(curwp, rp->lp, rp->firstindex);
}
}
}
/*
* Check whether in nested block comment or raw string, with caching.
*/
static int
inblockcomment(LINE *lpend, INT opt)
{
const int incr = 0x200, mask = ~0x1f0;
int cache_count, c1, c2;
int state = 0, startstate = 0, flag, special_buffer;
int alwaysparse, cachescan = 20, storecomment;
size_t incomment = 0, startincomment = 0;
INT i, len;
LINE *lp, *blp = curbp->b_linep;
if (lpend == blp) return 0;
// Don't cache in special buffers.
special_buffer = (curbp->b_flag & (BFSYS|BFDIRED));
cache_count = curbp->l_flag;
if (special_buffer) {
lp = blp;
} else if ((cache_count & 15) != 6) {
cache_count = 6;
lp = blp;
} else {
for (lp = lpend; lp != blp; lp = lback(lp)) {
flag = lp->l_flag;
if ((flag & mask) == cache_count) {
state = (flag >> 4) & 7;
incomment = (flag >> 7) & 3;
break;
} else if (cachescan-- <= 0) {
lp = blp;
break;
}
}
}
len = llength(lp);
i = len;
if (debug) commentcount = 0;
while (1) {
if (i >= len) {
if (state >= STATE_STRING && state <= STATE_EOLCOMMENT) {
if (len == 0 || lgetc(lp, len - 1) != '\\') state = STATE_NORMAL;
}
if (lp == lpend) break;
if (special_buffer) {
lp = lforw(lp);
} else {
// Store a parse state for each line. Lines with the same
// end-state are normally skipped as an optimization. Lines
// with different beginning and end state are always parsed.
storecomment = (incomment > (INT_MAX >> 8)) ? (INT_MAX >> 8) : incomment;
flag = 5 | (state << 5) | (storecomment << 8);
alwaysparse = (state != startstate || incomment != startincomment);
lp->l_flag = flag | (alwaysparse << 4); // Tag:parsecomment
do {
lp = lforw(lp);
} while (lp != lpend && lp->l_flag == flag);
}
i = 0;
len = llength(lp);
startstate = state;
startincomment = incomment;
if (debug) commentcount++;
if (len == 0) continue;
}
c1 = lgetc(lp, i);
c2 = (i < len - 1) ? lgetc(lp, i + 1) : '\n';
if (!ISDELIM(c1)) {
/* Nothing */
} else if (incomment) {
if ((opt & CLIKE_NESTED) && c1 == '/' && c2 == '*') {
incomment++;
i++;
} else if (c1 == '*' && c2 == '/') {
incomment--;
i++;
}
} else if (state == STATE_RAWSTRING) {
if (opt & CLIKE_CSHARP) {
if (c1 == '"') {
if (c2 == '"') i++; else state = STATE_NORMAL;
}
} else {
if (c1 == '`') state = STATE_NORMAL;
}
} else if (state == STATE_STRING) {
if (c1 == '"') state = STATE_NORMAL;
else if (c1 == '\\') i++;
} else if (state == STATE_CHARCONST) {
if (c1 == '\'') state = STATE_NORMAL;
else if (c1 == '\\') i++;
} else if ((opt & CLIKE_CCOMMENTS) && c1 == '/') {
if (c2 == '*') {
incomment = 1;
i++;
} else if (c2 == '/') {
state = STATE_EOLCOMMENT;
i = len;
}
} else if ((opt & CLIKE_HASHCOMMENT) && c1 == '#') {
state = STATE_EOLCOMMENT;
i = len;
} else if ((opt & CLIKE_JSCOMMENT) && c1 == '<' && c2 == '!' && i < len - 3 &&
lgetc(lp, i + 2) == '-' && lgetc(lp, i + 3) == '-')
{
state = STATE_EOLCOMMENT;
i = len;
} else if ((opt & CLIKE_RAW) && c1 == '`') {
state = STATE_RAWSTRING;
} else if ((opt & CLIKE_CSHARP) && c1 == '@' && c2 == '"') {
state = STATE_RAWSTRING;
i++;
} else if (opt & CLIKE_STRINGS) {
if (c1 == '"') state = STATE_STRING;
else if (c1 == '\'') state = STATE_CHARCONST;
}
i++;
}
if (!special_buffer) {
if (cache_count > INT_MAX - incr) {
for (lp = lforw(blp); lp != blp; lp = lforw(lp)) {
if ((lp->l_flag & 15) == 6) lp->l_flag = 0;
}
cache_count = 6;
}
cache_count += incr;
if (incomment <= 3) {
lpend->l_flag = cache_count | (state << 4) | (incomment << 7);
}
curbp->l_flag = cache_count;
}
return (state != STATE_NORMAL) | ((incomment != 0) << 1);
}
/*
* Get the desired indentation column for line "lp1". "inserted" is true
* if called by an active key after inserting something.
*
* Subtracting tablevels is additive, but adding tablevels mostly not.
*/
static INT
getclikeindent(LINE *lp1, int inserted)
{
INT col, tabsize, opt, style;
LINE *lp2, *lp3;
parseresult r1, r2, r3;
int addtablevel= 0, subtablevel = 0, addhalftab = 0, subhalftab = 0, tryanchor = 1;
int incomment, iscase = 0, isprecase = 0;
if (lp1 == curbp->b_linep) return NO_COLUMN;
opt = get_clike_options();
style = get_clike_style();
if (opt & (CLIKE_CCOMMENTS|CLIKE_RAW)) {
incomment = inblockcomment(lback(lp1), opt);
if (incomment) {
if (inserted) return NO_COLUMN;
lp2 = findnonblank(lp1, 0, NULL, 0);
getindent(lp2, NULL, &col);
if (incomment > 1) { // Tag:comment
parseline(lp2, opt, &r2);
if (r2.seenstartcomment && !r2.seenendcomment && !r2.seencontent) {
col++;
}
}
return col;
}
}
if ((opt & CLIKE_CCOMMENTS) && llength(lp1) > 1 &&
lgetc(lp1, 0) == '/' && lgetc(lp1, 1) == '/')
{
return NO_COLUMN;
}
tabsize = gettabsize(curbp);
parseline(lp1, opt, &r1);
lp2 = parse_statement(lp1, opt, &r2, r1.endofcomment);
lp3 = parse_statement(lp2, opt, &r3, r2.endofcomment);
col = getfullcolumn(curwp, lp2, r2.firstindex);
if ((opt & CLIKE_PREPROC) && r1.first == '#') return 0;
if ((opt & CLIKE_IFNOPAREN) && !isoneof(r1.first, "{}") && !isoneof(r2.last, "{}") &&
noparen_keywords(&r2, opt) && !noparen_keywords(&r1, opt))
{
addtablevel = 1;
if (style & 4) col = increasetab(col, tabsize); // Additive
else if (style & 1) addhalftab = 1;
} else if (r2.parenlevel < 0 || r2.bracketlevel < 0) {
addtablevel = 1;
tryanchor = 0; // If you try a '}' with negative paren level something is wrong
if ((style & 4) && (opt & CLIKE_KEYWORDS) && keywordspecial(&r2, opt, 0)) {
col = increasetab(col, tabsize); // Additive, Tag:if
} else if (style & 1) {
addhalftab = 1;
}
} else if (opt & CLIKE_KEYWORDS) {
tryanchor = (r1.first == '}');
if (r1.first != '{' && keywordspecial(&r2, opt, 1)) {
addtablevel = 1;
} else if (r2.last == ';' && r2.first != '{' && keywordspecial(&r3, opt, 1)) {
col = getfullcolumn(curwp, lp3, r3.firstindex);
#if 0
tryanchor = tryanchor || !firstword(&r3, "if (,else if (,} else if (");
#endif
} else {
tryanchor = 1;
}
}
if (allopt(opt, CLIKE_STRINGS|CLIKE_ANCHOR) && tryanchor) {
int endmultiassign = (r2.last == ';' && !isoneof(r3.last, ":;}{"));
int matched = 0;
if (opt & CLIKE_IFNOPAREN) {
if (r1.first == '}' || endmultiassign || (r2.last == '}' && !r2.single)) {
lp2 = findanchor(lp1, opt, &r2);
col = noparen_getcolumn(&r2, opt);
matched = 1;
} else if (r1.first == '{' || r2.last == '{') {
col = noparen_getcolumn(&r2, opt);
}
} else if (r1.first == '}' || endmultiassign || r2.last == '}') {
lp2 = findanchor(lp1, opt, &r2); // Tag:anchor
col = getfullcolumn(curwp, lp2, r2.firstindex);
matched = 1;
}
if (!matched && r2.last == '=') {
addtablevel = 1;
if (style & 1) addhalftab = 1;
}
}
if (opt & CLIKE_CASE) {
if (case_statement(&r1)) {
// Try to make case statements line up
if (opt & CLIKE_ANCHOR) {
lp3 = findanchor(lp1, opt, &r3);
if (case_statement(&r3)) {
return getfullcolumn(curwp, lp3, r3.firstindex);
}
}
if (!(style & 2)) subtablevel++;
iscase = 1;