/* Eats characters until '\n' and adds them to the comment. */
static void
eat_comment_line ()
{
for (;;)
{
int c = phase1_getc ();
if (c == '\n' || c == EOF)
{
comment_line_end (0);
break;
}
if (!(buflen == 0 && (c == ' ' || c == '\t')))
comment_add (c);
}
}
/* Read the next Unicode UCS-4 character from the input file. */
static int
phase2_getc ()
{
if (phase2_pushback_length)
return phase2_pushback[--phase2_pushback_length];
if (xgettext_current_source_encoding == po_charset_ascii)
{
int c = phase1_getc ();
if (c == EOF)
return UEOF;
if (!c_isascii (c))
{
multiline_error (xstrdup (""),
xasprintf ("%s\n%s\n",
non_ascii_error_message (lexical_context,
real_file_name,
line_number),
_("\
Please specify the source encoding through --from-code or through a comment\n\
as specified in http://www.python.org/peps/pep-0263.html.\n")));
exit (EXIT_FAILURE);
}
static int
phase7_getc ()
{
int c;
for (;;)
{
/* Use phase 1, because phase 2 elides comments. */
c = phase1_getc ();
if (c == '"')
return P7_QUOTES;
if (c != '\\')
return c;
c = phase1_getc ();
if (c != '\n')
switch (c)
{
case 'b':
return '\b';
case 'f':
return '\f';
case 'n':
return '\n';
case 'r':
return '\r';
case 't':
return '\t';
/* FIXME: What is the octal escape syntax?
syntax.html says: [0] [0-7]+
scanner.ll says: [0-7] [0-7] [0-7]
*/
#if 0
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
{
int n, j;
n = 0;
for (j = 0; j < 3; ++j)
{
n = n * 8 + c - '0';
c = phase1_getc ();
switch (c)
{
default:
break;
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
continue;
}
break;
}
phase1_ungetc (c);
return n;
}
#endif
default:
return c;
}
}
}
static int
phase2_getc ()
{
static char *buffer;
static size_t bufmax;
size_t buflen;
int lineno;
int c;
bool last_was_star;
if (phase2_pushback_length)
return phase2_pushback[--phase2_pushback_length];
if (char_in_line == 0)
{
/* Eat whitespace, to recognize ^[\t ]*# pattern. */
do
c = phase1_getc ();
while (c == '\t' || c == ' ');
if (c == '#')
{
/* sh comment. */
buflen = 0;
lineno = line_number;
for (;;)
{
c = phase1_getc ();
if (c == '\n' || c == EOF)
break;
/* We skip all leading white space, but not EOLs. */
if (!(buflen == 0 && (c == ' ' || c == '\t')))
{
if (buflen >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[buflen++] = c;
}
}
if (buflen >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[buflen] = '\0';
savable_comment_add (buffer);
last_comment_line = lineno;
return '\n';
}
}
else
c = phase1_getc ();
if (c == '/')
{
c = phase1_getc ();
switch (c)
{
default:
phase1_ungetc (c);
return '/';
case '*':
/* C comment. */
buflen = 0;
lineno = line_number;
last_was_star = false;
for (;;)
{
c = phase1_getc ();
if (c == EOF)
break;
/* We skip all leading white space, but not EOLs. */
if (buflen == 0 && (c == ' ' || c == '\t'))
continue;
if (buflen >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[buflen++] = c;
switch (c)
{
case '\n':
--buflen;
while (buflen >= 1
&& (buffer[buflen - 1] == ' '
|| buffer[buflen - 1] == '\t'))
--buflen;
buffer[buflen] = '\0';
savable_comment_add (buffer);
buflen = 0;
lineno = line_number;
last_was_star = false;
continue;
case '*':
last_was_star = true;
continue;
case '/':
if (last_was_star)
{
buflen -= 2;
while (buflen >= 1
&& (buffer[buflen - 1] == ' '
|| buffer[buflen - 1] == '\t'))
--buflen;
buffer[buflen] = '\0';
savable_comment_add (buffer);
break;
}
/* FALLTHROUGH */
default:
last_was_star = false;
continue;
}
break;
}
last_comment_line = lineno;
return ' ';
case '/':
/* C++ comment. */
buflen = 0;
lineno = line_number;
for (;;)
{
c = phase1_getc ();
if (c == '\n' || c == EOF)
break;
/* We skip all leading white space, but not EOLs. */
if (!(buflen == 0 && (c == ' ' || c == '\t')))
{
if (buflen >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[buflen++] = c;
}
}
if (buflen >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[buflen] = '\0';
savable_comment_add (buffer);
last_comment_line = lineno;
return '\n';
}
}
else
return c;
}
static void
x_awk_lex (token_ty *tp)
{
static char *buffer;
static int bufmax;
int bufpos;
int c;
for (;;)
{
tp->line_number = line_number;
c = phase2_getc ();
switch (c)
{
case EOF:
tp->type = token_type_eof;
return;
case '\n':
if (last_non_comment_line > last_comment_line)
savable_comment_reset ();
/* Newline is not allowed inside expressions. It usually
introduces a fresh statement.
FIXME: Newlines after any of ',' '{' '?' ':' '||' '&&' 'do' 'else'
does *not* introduce a fresh statement. */
prefer_division_over_regexp = false;
/* FALLTHROUGH */
case '\t':
case ' ':
/* Ignore whitespace and comments. */
continue;
case '\\':
/* Backslash ought to be immediately followed by a newline. */
continue;
}
last_non_comment_line = tp->line_number;
switch (c)
{
case '.':
{
int c2 = phase2_getc ();
phase2_ungetc (c2);
if (!(c2 >= '0' && c2 <= '9'))
{
tp->type = token_type_other;
prefer_division_over_regexp = false;
return;
}
}
/* FALLTHROUGH */
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
case 'Y': case 'Z':
case '_':
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
case 'y': case 'z':
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
/* Symbol, or part of a number. */
bufpos = 0;
for (;;)
{
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos++] = c;
c = phase2_getc ();
switch (c)
{
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
case 'Y': case 'Z':
case '_':
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
case 'y': case 'z':
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
continue;
default:
if (bufpos == 1 && buffer[0] == '_' && c == '"')
{
tp->type = token_type_i18nstring;
goto case_string;
}
phase2_ungetc (c);
break;
}
break;
}
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos] = '\0';
tp->string = xstrdup (buffer);
tp->type = token_type_symbol;
/* Most identifiers can be variable names; after them we must
interpret '/' as division operator. But for awk's builtin
keywords we have three cases:
(a) Must interpret '/' as division operator. "length".
(b) Must interpret '/' as start of a regular expression.
"do", "exit", "print", "printf", "return".
(c) '/' after this keyword in invalid anyway. All others.
I used the following script for the distinction.
for k in $awk_keywords; do
echo; echo $k; awk "function foo () { $k / 10 }" < /dev/null
done
*/
if (strcmp (buffer, "do") == 0
|| strcmp (buffer, "exit") == 0
|| strcmp (buffer, "print") == 0
|| strcmp (buffer, "printf") == 0
|| strcmp (buffer, "return") == 0)
prefer_division_over_regexp = false;
else
prefer_division_over_regexp = true;
return;
case '"':
tp->type = token_type_string;
case_string:
bufpos = 0;
for (;;)
{
c = phase7_getc ();
if (c == EOF || c == P7_QUOTES)
break;
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos++] = c;
}
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos] = '\0';
tp->string = xstrdup (buffer);
prefer_division_over_regexp = true;
return;
case '(':
tp->type = token_type_lparen;
prefer_division_over_regexp = false;
return;
case ')':
tp->type = token_type_rparen;
prefer_division_over_regexp = true;
return;
case ',':
tp->type = token_type_comma;
prefer_division_over_regexp = false;
return;
case ';':
tp->type = token_type_semicolon;
prefer_division_over_regexp = false;
return;
case ']':
tp->type = token_type_other;
prefer_division_over_regexp = true;
return;
case '/':
if (!prefer_division_over_regexp)
{
/* Regular expression.
Counting brackets is non-trivial. [[] is balanced, and so is
[\]]. Also, /[/]/ is balanced and ends at the third slash.
Do not count [ or ] if either one is preceded by a \.
A '[' should be counted if
a) it is the first one so far (brackets == 0), or
b) it is the '[' in '[:'.
A ']' should be counted if not preceded by a \.
According to POSIX, []] is how you put a ] into a set.
Try to handle that too.
*/
int brackets = 0;
bool pos0 = true; /* true at start of regexp */
bool pos1_open = false; /* true after [ at start of regexp */
bool pos2_open_not = false; /* true after [^ at start of regexp */
for (;;)
{
c = phase1_getc ();
if (c == EOF || c == '\n')
{
phase1_ungetc (c);
error_with_progname = false;
error (0, 0, _("%s:%d: warning: unterminated regular expression"),
logical_file_name, line_number);
error_with_progname = true;
break;
}
else if (c == '[')
{
if (brackets == 0)
brackets++;
else
{
c = phase1_getc ();
if (c == ':')
brackets++;
phase1_ungetc (c);
}
if (pos0)
{
pos0 = false;
pos1_open = true;
continue;
}
}
else if (c == ']')
{
if (!(pos1_open || pos2_open_not))
brackets--;
}
else if (c == '^')
{
if (pos1_open)
{
pos1_open = false;
pos2_open_not = true;
continue;
}
}
else if (c == '\\')
{
c = phase1_getc ();
/* Backslash-newline is valid and ignored. */
}
else if (c == '/')
{
if (brackets <= 0)
break;
}
pos0 = false;
pos1_open = false;
pos2_open_not = false;
}
tp->type = token_type_other;
prefer_division_over_regexp = false;
return;
}
/* FALLTHROUGH */
default:
/* We could carefully recognize each of the 2 and 3 character
operators, but it is not necessary, as we only need to recognize
gettext invocations. Don't bother. */
tp->type = token_type_other;
prefer_division_over_regexp = false;
return;
}
}
}
static int
phase7_getc ()
{
int c;
for (;;)
{
/* Use phase 1, because phase 2 elides comments. */
c = phase1_getc ();
if (c == EOF || c == '\n')
break;
if (c == '"')
return P7_QUOTES;
if (c != '\\')
return c;
c = phase1_getc ();
if (c == EOF)
break;
if (c != '\n')
switch (c)
{
case 'a':
return '\a';
case 'b':
return '\b';
case 'f':
return '\f';
case 'n':
return '\n';
case 'r':
return '\r';
case 't':
return '\t';
case 'v':
return '\v';
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7':
{
int n = c - '0';
c = phase1_getc ();
if (c != EOF)
{
if (c >= '0' && c <= '7')
{
n = (n << 3) + (c - '0');
c = phase1_getc ();
if (c != EOF)
{
if (c >= '0' && c <= '7')
n = (n << 3) + (c - '0');
else
phase1_ungetc (c);
}
}
else
phase1_ungetc (c);
}
return (unsigned char) n;
}
case 'x':
{
int n = 0;
for (;;)
{
c = phase1_getc ();
if (c == EOF)
break;
else if (c >= '0' && c <= '9')
n = (n << 4) + (c - '0');
else if (c >= 'A' && c <= 'F')
n = (n << 4) + (c - 'A' + 10);
else if (c >= 'a' && c <= 'f')
n = (n << 4) + (c - 'a' + 10);
else
{
phase1_ungetc (c);
break;
}
}
return (unsigned char) n;
}
default:
return c;
}
}
phase1_ungetc (c);
error_with_progname = false;
error (0, 0, _("%s:%d: warning: unterminated string"), logical_file_name,
line_number);
error_with_progname = true;
return P7_QUOTES;
}
static int
phase2_getc ()
{
int c;
bool last_was_star;
c = phase1_getc ();
if (c != '/')
return c;
c = phase1_getc ();
switch (c)
{
default:
phase1_ungetc (c);
return '/';
case '*':
/* C comment. */
comment_start ();
last_was_star = false;
for (;;)
{
c = phase1_getc ();
if (c == EOF)
break;
/* We skip all leading white space, but not EOLs. */
if (!(buflen == 0 && (c == ' ' || c == '\t')))
comment_add (c);
switch (c)
{
case '\n':
comment_line_end (1);
comment_start ();
last_was_star = false;
continue;
case '*':
last_was_star = true;
continue;
case '/':
if (last_was_star)
{
comment_line_end (2);
break;
}
/* FALLTHROUGH */
default:
last_was_star = false;
continue;
}
break;
}
last_comment_line = line_number;
return ' ';
case '/':
/* C++ or ISO C 99 comment. */
comment_start ();
for (;;)
{
c = phase1_getc ();
if (c == '\n' || c == EOF)
break;
/* We skip all leading white space, but not EOLs. */
if (!(buflen == 0 && (c == ' ' || c == '\t')))
comment_add (c);
}
comment_line_end (0);
last_comment_line = line_number;
return '\n';
}
}
static void
phase4_get (token_ty *tp)
{
static char *buffer;
static int bufmax;
int bufpos;
int c;
if (phase4_pushback_length)
{
*tp = phase4_pushback[--phase4_pushback_length];
return;
}
tp->string = NULL;
for (;;)
{
tp->line_number = line_number;
c = phase3_getc ();
switch (c)
{
case EOF:
tp->type = token_type_eof;
return;
case '\n':
if (last_non_comment_line > last_comment_line)
savable_comment_reset ();
/* FALLTHROUGH */
case ' ':
case '\t':
case '\r':
/* Ignore whitespace. */
continue;
}
last_non_comment_line = tp->line_number;
switch (c)
{
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G':
case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N':
case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U':
case 'V': case 'W': case 'X': case 'Y': case 'Z':
case '_':
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
case 'v': case 'w': case 'x': case 'y': case 'z':
case 127: case 128: case 129: case 130: case 131: case 132: case 133:
case 134: case 135: case 136: case 137: case 138: case 139: case 140:
case 141: case 142: case 143: case 144: case 145: case 146: case 147:
case 148: case 149: case 150: case 151: case 152: case 153: case 154:
case 155: case 156: case 157: case 158: case 159: case 160: case 161:
case 162: case 163: case 164: case 165: case 166: case 167: case 168:
case 169: case 170: case 171: case 172: case 173: case 174: case 175:
case 176: case 177: case 178: case 179: case 180: case 181: case 182:
case 183: case 184: case 185: case 186: case 187: case 188: case 189:
case 190: case 191: case 192: case 193: case 194: case 195: case 196:
case 197: case 198: case 199: case 200: case 201: case 202: case 203:
case 204: case 205: case 206: case 207: case 208: case 209: case 210:
case 211: case 212: case 213: case 214: case 215: case 216: case 217:
case 218: case 219: case 220: case 221: case 222: case 223: case 224:
case 225: case 226: case 227: case 228: case 229: case 230: case 231:
case 232: case 233: case 234: case 235: case 236: case 237: case 238:
case 239: case 240: case 241: case 242: case 243: case 244: case 245:
case 246: case 247: case 248: case 249: case 250: case 251: case 252:
case 253: case 254: case 255:
bufpos = 0;
for (;;)
{
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos++] = c;
c = phase1_getc ();
switch (c)
{
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
case 'Y': case 'Z':
case '_':
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
case 'y': case 'z':
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
case 127: case 128: case 129: case 130: case 131: case 132:
case 133: case 134: case 135: case 136: case 137: case 138:
case 139: case 140: case 141: case 142: case 143: case 144:
case 145: case 146: case 147: case 148: case 149: case 150:
case 151: case 152: case 153: case 154: case 155: case 156:
case 157: case 158: case 159: case 160: case 161: case 162:
case 163: case 164: case 165: case 166: case 167: case 168:
case 169: case 170: case 171: case 172: case 173: case 174:
case 175: case 176: case 177: case 178: case 179: case 180:
case 181: case 182: case 183: case 184: case 185: case 186:
case 187: case 188: case 189: case 190: case 191: case 192:
case 193: case 194: case 195: case 196: case 197: case 198:
case 199: case 200: case 201: case 202: case 203: case 204:
case 205: case 206: case 207: case 208: case 209: case 210:
case 211: case 212: case 213: case 214: case 215: case 216:
case 217: case 218: case 219: case 220: case 221: case 222:
case 223: case 224: case 225: case 226: case 227: case 228:
case 229: case 230: case 231: case 232: case 233: case 234:
case 235: case 236: case 237: case 238: case 239: case 240:
case 241: case 242: case 243: case 244: case 245: case 246:
case 247: case 248: case 249: case 250: case 251: case 252:
case 253: case 254: case 255:
continue;
default:
phase1_ungetc (c);
break;
}
break;
}
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos] = 0;
tp->string = xstrdup (buffer);
tp->type = token_type_symbol;
return;
case '\'':
/* Single-quoted string literal. */
bufpos = 0;
for (;;)
{
c = phase1_getc ();
if (c == EOF || c == '\'')
break;
if (c == '\\')
{
c = phase1_getc ();
if (c != '\\' && c != '\'')
{
phase1_ungetc (c);
c = '\\';
}
}
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos++] = c;
}
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos] = 0;
tp->type = token_type_string_literal;
tp->string = xstrdup (buffer);
tp->comment = add_reference (savable_comment);
return;
case '"':
/* Double-quoted string literal. */
tp->type = token_type_string_literal;
bufpos = 0;
for (;;)
{
c = phase1_getc ();
if (c == EOF || c == '"')
break;
if (c == '$')
{
c = phase1_getc ();
if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')
|| c == '_' || c == '{' || c >= 0x7f)
{
/* String with variables. */
tp->type = token_type_other;
continue;
}
phase1_ungetc (c);
c = '$';
}
if (c == '{')
{
c = phase1_getc ();
if (c == '$')
{
/* String with expressions. */
tp->type = token_type_other;
continue;
}
phase1_ungetc (c);
c = '{';
}
if (c == '\\')
{
int n, j;
c = phase1_getc ();
switch (c)
{
case '"':
case '\\':
case '$':
break;
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
n = 0;
for (j = 0; j < 3; ++j)
{
n = n * 8 + c - '0';
c = phase1_getc ();
switch (c)
{
default:
break;
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
continue;
}
break;
}
phase1_ungetc (c);
c = n;
break;
case 'x':
n = 0;
for (j = 0; j < 2; ++j)
{
c = phase1_getc ();
switch (c)
{
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
n = n * 16 + c - '0';
break;
case 'A': case 'B': case 'C': case 'D': case 'E':
case 'F':
n = n * 16 + 10 + c - 'A';
break;
case 'a': case 'b': case 'c': case 'd': case 'e':
case 'f':
n = n * 16 + 10 + c - 'a';
break;
default:
phase1_ungetc (c);
c = 0;
break;
}
if (c == 0)
break;
}
if (j == 0)
{
phase1_ungetc ('x');
c = '\\';
}
else
c = n;
break;
case 'n':
c = '\n';
break;
case 't':
c = '\t';
break;
case 'r':
c = '\r';
break;
default:
phase1_ungetc (c);
c = '\\';
break;
}
}
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos++] = c;
}
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos] = 0;
if (tp->type == token_type_string_literal)
{
tp->string = xstrdup (buffer);
tp->comment = add_reference (savable_comment);
}
return;
case '?':
case '%':
{
int c2 = phase1_getc ();
if (c2 == '>')
{
/* ?> and %> terminate PHP mode and switch back to HTML
mode. */
skip_html ();
tp->type = token_type_other;
}
else
{
phase1_ungetc (c2);
tp->type = (c == '%' ? token_type_operator1 : token_type_other);
}
return;
}
case '(':
tp->type = token_type_lparen;
return;
case ')':
tp->type = token_type_rparen;
return;
case ',':
tp->type = token_type_comma;
return;
case '[':
tp->type = token_type_lbracket;
return;
case ']':
tp->type = token_type_rbracket;
return;
case '.':
tp->type = token_type_dot;
return;
case '*':
case '/':
tp->type = token_type_operator1;
return;
case '+':
case '-':
{
int c2 = phase1_getc ();
if (c2 == c)
/* ++ or -- */
tp->type = token_type_operator1;
else
/* + or - */
{
phase1_ungetc (c2);
tp->type = token_type_operator2;
}
return;
}
case '!':
case '~':
case '@':
tp->type = token_type_operator2;
return;
case '<':
{
int c2 = phase1_getc ();
if (c2 == '<')
{
int c3 = phase1_getc ();
if (c3 == '<')
{
/* Start of here document.
Parse whitespace, then label, then newline. */
do
c = phase3_getc ();
while (c == ' ' || c == '\t' || c == '\n' || c == '\r');
bufpos = 0;
do
{
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos++] = c;
c = phase3_getc ();
}
while (c != EOF && c != '\n' && c != '\r');
/* buffer[0..bufpos-1] now contains the label. */
/* Now skip the here document. */
for (;;)
{
c = phase1_getc ();
if (c == EOF)
break;
if (c == '\n' || c == '\r')
{
int bufidx = 0;
while (bufidx < bufpos)
{
c = phase1_getc ();
if (c == EOF)
break;
if (c != buffer[bufidx])
{
phase1_ungetc (c);
break;
}
bufidx++;
}
if (bufidx == bufpos)
{
c = phase1_getc ();
if (c != ';')
phase1_ungetc (c);
c = phase1_getc ();
if (c == '\n' || c == '\r')
break;
}
}
}
/* FIXME: Ideally we should turn the here document into a
string literal if it didn't contain $ substitution. And
we should also respect backslash escape sequences like
in double-quoted strings. */
tp->type = token_type_other;
return;
}
phase1_ungetc (c3);
}
/* < / script > terminates PHP mode and switches back to HTML
mode. */
while (c2 == ' ' || c2 == '\t' || c2 == '\n' || c2 == '\r')
c2 = phase1_getc ();
if (c2 == '/')
{
do
c2 = phase1_getc ();
while (c2 == ' ' || c2 == '\t' || c2 == '\n' || c2 == '\r');
if (c2 == 's' || c2 == 'S')
{
c2 = phase1_getc ();
if (c2 == 'c' || c2 == 'C')
{
c2 = phase1_getc ();
if (c2 == 'r' || c2 == 'R')
{
c2 = phase1_getc ();
if (c2 == 'i' || c2 == 'I')
{
c2 = phase1_getc ();
if (c2 == 'p' || c2 == 'P')
{
c2 = phase1_getc ();
if (c2 == 't' || c2 == 'T')
{
do
c2 = phase1_getc ();
while (c2 == ' ' || c2 == '\t'
|| c2 == '\n' || c2 == '\r');
if (c2 == '>')
{
skip_html ();
}
else
phase1_ungetc (c2);
}
else
phase1_ungetc (c2);
}
else
phase1_ungetc (c2);
}
else
phase1_ungetc (c2);
}
else
phase1_ungetc (c2);
}
else
phase1_ungetc (c2);
}
else
phase1_ungetc (c2);
}
else
phase1_ungetc (c2);
tp->type = token_type_other;
return;
}
case '`':
/* Execution operator. */
default:
/* We could carefully recognize each of the 2 and 3 character
operators, but it is not necessary, as we only need to recognize
gettext invocations. Don't bother. */
tp->type = token_type_other;
return;
}
}
}
static int
phase3_getc ()
{
int lineno;
int c;
if (phase3_pushback_length)
return phase3_pushback[--phase3_pushback_length];
c = phase1_getc ();
if (c == '#')
{
/* sh comment. */
bool last_was_qmark = false;
comment_start ();
lineno = line_number;
for (;;)
{
c = phase1_getc ();
if (c == '\n' || c == EOF)
{
comment_line_end (0);
break;
}
if (last_was_qmark && c == '>')
{
comment_line_end (1);
skip_html ();
break;
}
/* We skip all leading white space, but not EOLs. */
if (!(buflen == 0 && (c == ' ' || c == '\t')))
comment_add (c);
last_was_qmark = (c == '?' || c == '%');
}
last_comment_line = lineno;
return '\n';
}
else if (c == '/')
{
c = phase1_getc ();
switch (c)
{
default:
phase1_ungetc (c);
return '/';
case '*':
{
/* C comment. */
bool last_was_star;
comment_start ();
lineno = line_number;
last_was_star = false;
for (;;)
{
c = phase1_getc ();
if (c == EOF)
break;
/* We skip all leading white space, but not EOLs. */
if (buflen == 0 && (c == ' ' || c == '\t'))
continue;
comment_add (c);
switch (c)
{
case '\n':
comment_line_end (1);
comment_start ();
lineno = line_number;
last_was_star = false;
continue;
case '*':
last_was_star = true;
continue;
case '/':
if (last_was_star)
{
comment_line_end (2);
break;
}
/* FALLTHROUGH */
default:
last_was_star = false;
continue;
}
break;
}
last_comment_line = lineno;
return ' ';
}
case '/':
{
/* C++ comment. */
bool last_was_qmark = false;
comment_start ();
lineno = line_number;
for (;;)
{
c = phase1_getc ();
if (c == '\n' || c == EOF)
{
comment_line_end (0);
break;
}
if (last_was_qmark && c == '>')
{
comment_line_end (1);
skip_html ();
break;
}
/* We skip all leading white space, but not EOLs. */
if (!(buflen == 0 && (c == ' ' || c == '\t')))
comment_add (c);
last_was_qmark = (c == '?' || c == '%');
}
last_comment_line = lineno;
return '\n';
}
}
}
else
return c;
}
static int
phase2_getc ()
{
int c;
if (phase2_pushback_length)
return phase2_pushback[--phase2_pushback_length];
c = phase1_getc ();
switch (c)
{
case '?':
case '%':
{
int c2 = phase1_getc ();
if (c2 == '>')
{
/* ?> and %> terminate PHP mode and switch back to HTML mode. */
skip_html ();
return ' ';
}
phase1_ungetc (c2);
}
break;
case '<':
{
int c2 = phase1_getc ();
/* < / script > terminates PHP mode and switches back to HTML mode. */
while (c2 == ' ' || c2 == '\t' || c2 == '\n' || c2 == '\r')
c2 = phase1_getc ();
if (c2 == '/')
{
do
c2 = phase1_getc ();
while (c2 == ' ' || c2 == '\t' || c2 == '\n' || c2 == '\r');
if (c2 == 's' || c2 == 'S')
{
c2 = phase1_getc ();
if (c2 == 'c' || c2 == 'C')
{
c2 = phase1_getc ();
if (c2 == 'r' || c2 == 'R')
{
c2 = phase1_getc ();
if (c2 == 'i' || c2 == 'I')
{
c2 = phase1_getc ();
if (c2 == 'p' || c2 == 'P')
{
c2 = phase1_getc ();
if (c2 == 't' || c2 == 'T')
{
do
c2 = phase1_getc ();
while (c2 == ' ' || c2 == '\t'
|| c2 == '\n' || c2 == '\r');
if (c2 == '>')
{
skip_html ();
return ' ';
}
}
}
}
}
}
}
}
phase1_ungetc (c2);
}
break;
}
return c;
}
static void
skip_html ()
{
for (;;)
{
int c = phase1_getc ();
if (c == EOF)
return;
if (c == '<')
{
int c2 = phase1_getc ();
if (c2 == EOF)
break;
if (c2 == '?')
{
/* <?php is the normal way to enter PHP mode. <? and <?= are
recognized by PHP depending on a configuration setting. */
int c3 = phase1_getc ();
if (c3 != '=')
phase1_ungetc (c3);
return;
}
if (c2 == '%')
{
/* <% and <%= are recognized by PHP depending on a configuration
setting. */
int c3 = phase1_getc ();
if (c3 != '=')
phase1_ungetc (c3);
return;
}
if (c2 == '<')
{
phase1_ungetc (c2);
continue;
}
/* < script language = php >
< script language = "php" >
< script language = 'php' >
are always recognized. */
while (c2 == ' ' || c2 == '\t' || c2 == '\n' || c2 == '\r')
c2 = phase1_getc ();
if (c2 != 's' && c2 != 'S')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'c' && c2 != 'C')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'r' && c2 != 'R')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'i' && c2 != 'I')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'p' && c2 != 'P')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 't' && c2 != 'T')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (!(c2 == ' ' || c2 == '\t' || c2 == '\n' || c2 == '\r'))
{
phase1_ungetc (c2);
continue;
}
do
c2 = phase1_getc ();
while (c2 == ' ' || c2 == '\t' || c2 == '\n' || c2 == '\r');
if (c2 != 'l' && c2 != 'L')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'a' && c2 != 'A')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'n' && c2 != 'N')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'g' && c2 != 'G')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'u' && c2 != 'U')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'a' && c2 != 'A')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'g' && c2 != 'G')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'e' && c2 != 'E')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
while (c2 == ' ' || c2 == '\t' || c2 == '\n' || c2 == '\r')
c2 = phase1_getc ();
if (c2 != '=')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
while (c2 == ' ' || c2 == '\t' || c2 == '\n' || c2 == '\r')
c2 = phase1_getc ();
if (c2 == '"')
{
c2 = phase1_getc ();
if (c2 != 'p')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'h')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'p')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != '"')
{
phase1_ungetc (c2);
continue;
}
}
else if (c2 == '\'')
{
c2 = phase1_getc ();
if (c2 != 'p')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'h')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'p')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != '\'')
{
phase1_ungetc (c2);
continue;
}
}
else
{
if (c2 != 'p')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'h')
{
phase1_ungetc (c2);
continue;
}
c2 = phase1_getc ();
if (c2 != 'p')
{
phase1_ungetc (c2);
continue;
}
}
c2 = phase1_getc ();
while (c2 == ' ' || c2 == '\t' || c2 == '\n' || c2 == '\r')
c2 = phase1_getc ();
if (c2 != '>')
{
phase1_ungetc (c2);
continue;
}
return;
}
}
}
static void
phase2_get (token_ty *tp)
{
static char *buffer;
static int bufmax;
int bufpos;
int c;
if (phase2_pushback_length)
{
*tp = phase2_pushback[--phase2_pushback_length];
return;
}
tp->string = NULL;
for (;;)
{
tp->line_number = line_number;
c = phase1_getc ();
switch (c)
{
case EOF:
tp->type = token_type_eof;
return;
case '"':
{
/* Comment. */
int lineno;
comment_start ();
lineno = line_number;
for (;;)
{
c = phase1_getc ();
if (c == '"' || c == EOF)
break;
if (c == '\n')
{
comment_line_end ();
comment_start ();
}
else
{
/* We skip all leading white space, but not EOLs. */
if (!(buflen == 0 && (c == ' ' || c == '\t')))
comment_add (c);
}
}
comment_line_end ();
last_comment_line = lineno;
continue;
}
case '\n':
if (last_non_comment_line > last_comment_line)
savable_comment_reset ();
/* FALLTHROUGH */
case ' ':
case '\t':
case '\r':
/* Ignore whitespace. */
continue;
}
last_non_comment_line = tp->line_number;
switch (c)
{
case '\'':
/* String literal. */
bufpos = 0;
for (;;)
{
c = phase1_getc ();
if (c == EOF)
break;
if (c == '\'')
{
c = phase1_getc ();
if (c != '\'')
{
phase1_ungetc (c);
break;
}
}
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos++] = c;
}
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos] = 0;
tp->type = token_type_string_literal;
tp->string = xstrdup (buffer);
return;
case '+':
case '-':
case '*':
case '/':
case '~':
case '|':
case ',':
case '<':
case '>':
case '=':
case '&':
case '@':
case '?':
case '%':
case '\\':
{
char *name;
int c2 = phase1_getc ();
switch (c2)
{
case '+':
case '-':
case '*':
case '/':
case '~':
case '|':
case ',':
case '<':
case '>':
case '=':
case '&':
case '@':
case '?':
case '%':
name = xmalloc (3);
name[0] = c;
name[1] = c2;
name[2] = '\0';
tp->type = token_type_symbol;
tp->string = name;
return;
default:
phase1_ungetc (c2);
break;
}
name = xmalloc (2);
name[0] = c;
name[1] = '\0';
tp->type = token_type_symbol;
tp->string = name;
return;
}
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
case 'Y': case 'Z':
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
case 'y': case 'z':
/* Recognize id or id":"[id":"]* or id":"[id":"]*id. */
bufpos = 0;
for (;;)
{
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos++] = c;
c = phase1_getc ();
switch (c)
{
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
case 'Y': case 'Z':
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
case 'y': case 'z':
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
continue;
case ':':
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos++] = c;
c = phase1_getc ();
switch (c)
{
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
case 'Y': case 'Z':
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
case 'y': case 'z':
continue;
default:
phase1_ungetc (c);
break;
}
break;
default:
phase1_ungetc (c);
break;
}
break;
}
if (bufpos >= bufmax)
{
bufmax = 2 * bufmax + 10;
buffer = xrealloc (buffer, bufmax);
}
buffer[bufpos] = '\0';
tp->string = xstrdup (buffer);
tp->type = token_type_symbol;
return;
case '#':
/* Uniquification operator. */
tp->type = token_type_uniq;
return;
case '$':
c = phase1_getc ();
tp->type = token_type_other;
return;
default:
tp->type = token_type_other;
return;
}
}
}
static void
phase3_get (token_ty *tp)
{
int c;
int c2;
int c_start;
if (phase3_pushback_length)
{
*tp = phase3_pushback[--phase3_pushback_length];
return;
}
tp->string = NULL;
for (;;)
{
tp->line_number = line_number;
c = phase2_getc ();
switch (c)
{
case EOF:
tp->type = token_type_eof;
return;
case '\n':
if (last_non_comment_line > last_comment_line)
savable_comment_reset ();
/* Intentionally not breaking. */
case ' ':
case '\t':
case '\f':
continue;
case '+':
case '-':
case '*':
case '/':
case '^':
case '%':
case '#':
tp->type = token_type_operator1;
return;
case '<':
case '>':
case '=':
c2 = phase1_getc ();
if (c2 != '=')
phase1_ungetc (c2);
tp->type = token_type_operator2;
return;
case '~':
c2 = phase1_getc ();
if (c2 == '=')
{
tp->type = token_type_operator2;
return;
}
else
phase1_ungetc (c2);
continue;
case '(':
tp->type = token_type_lparen;
return;
case ')':
tp->type = token_type_rparen;
return;
case ',':
tp->type = token_type_comma;
return;
case ';':
tp->type = token_type_other;
return;
/* There are three operators beginning with a dot. '.',
'..' and '...'. The most useful for us is the string
concatenation operator ('..'). */
case '.':
c = phase1_getc ();
if (c == '.')
{
c = phase1_getc ();
if (c == '.')
{
tp->type = token_type_other;
return;
}
else
{
phase1_ungetc (c);
tp->type = token_type_doubledot;
return;
}
}
else if (c >= '0' && c <= '9')
{
/* It's a number. We aren't interested in the actual
numeric value, so ignore the dot and let next
iteration eat the number. */
phase1_ungetc (c);
continue;
}
else
{
phase1_ungetc (c);
tp->type = token_type_dot;
return;
}
case '"':
case '\'':
c_start = c;
string_start ();
for (;;)
{
/* We need unprocessed characters from phase 1. */
c = phase1_getc ();
/* We got '\', this is probably an escape sequence. */
if (c == '\\')
{
c = phase1_getc ();
switch (c)
{
case 'a':
string_add ('\a');
break;
case 'b':
string_add ('\b');
break;
case 'f':
string_add ('\f');
break;
case 'n':
string_add ('\n');
break;
case 'r':
string_add ('\r');
break;
case 't':
string_add ('\t');
break;
case 'v':
string_add ('\v');
break;
case 'x':
{
int num = 0;
int i = 0;
for (i = 0; i < 2; i++)
{
c = phase1_getc ();
if (c >= '0' && c <= '9')
num += c - '0';
else if (c >= 'a' && c <= 'f')
num += c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
num += c - 'A' + 10;
else
{
phase1_ungetc (c);
break;
}
if (i == 0)
num *= 16;
}
if (i == 2)
string_add (num);
}
break;
case 'z':
/* Ignore the following whitespace. */
do
{
c = phase1_getc ();
}
while (c == ' ' || c == '\n' || c == '\t' || c == '\r'
|| c == '\f' || c == '\v');
phase1_ungetc (c);
break;
default:
/* Check if it's a '\ddd' sequence. */
if (c >= '0' && c <= '9')
{
int num = 0;
int i = 0;
while (c >= '0' && c <= '9' && i < 3)
{
num *= 10;
num += (c - '0');
c = phase1_getc ();
i++;
}
/* The last read character is either a
non-number or another number after our
'\ddd' sequence. We need to ungetc it. */
phase1_ungetc (c);
/* The sequence number is too big, this
causes a lexical error. Ignore it. */
if (num < 256)
string_add (num);
}
else
string_add (c);
}
}
else if (c == c_start || c == EOF || c == '\n')
{
/* End of string. */
string_end ();
tp->string = xstrdup (string_buf);
tp->comment = add_reference (savable_comment);
tp->type = token_type_string;
return;
}
else
string_add (c);
}
break;
case '[':
c = phase1_getc ();
/* Count the number of equal signs. */
int esigns = 0;
while (c == '=')
{
esigns++;
c = phase1_getc ();
}
if (c != '[')
{
/* We did not find what we were looking for, ungetc it. */
phase1_ungetc (c);
if (esigns == 0)
{
/* Our current character isn't '[' and we got 0 equal
signs, so the first '[' must have been a left
bracket. */
tp->type = token_type_lbracket;
return;
}
else
/* Lexical error, ignore it. */
continue;
}
string_start ();
for (;;)
{
c = phase1_getc ();
if (c == ']')
{
c = phase1_getc ();
/* Count the number of equal signs. */
int esigns2 = 0;
while (c == '=')
{
esigns2++;
c = phase1_getc ();
}
if (c == ']' && esigns == esigns2)
{
/* We got ']==...==]', where the number of equal
signs matches the number of equal signs in
the opening bracket. */
string_end ();
tp->string = xstrdup (string_buf);
tp->comment = add_reference (savable_comment);
tp->type = token_type_string;
return;
}
else
{
/* Otherwise we got either ']==' garbage or
']==...==]' with a different number of equal
signs.
Add ']' and equal signs to the string, and
ungetc the current character, because the
second ']' might be a part of another closing
long bracket, e.g. '==]===]'. */
phase1_ungetc (c);
string_add (']');
while (esigns2--)
string_add ('=');
}
}
else
{
if (c == EOF)
{
string_end ();
tp->string = xstrdup (string_buf);
tp->comment = add_reference (savable_comment);
tp->type = token_type_string;
return;
}
else
string_add (c);
}
}
break;
case ']':
tp->type = token_type_rbracket;
return;
default:
if (c >= '0' && c <= '9')
{
while (c >= '0' && c <= '9')
c = phase1_getc ();
if (c == '.')
{
c = phase1_getc ();
while (c >= '0' && c <= '9')
c = phase1_getc ();
}
if (c == 'e' || c == 'E')
{
if (c == '+' || c == '-')
c = phase1_getc ();
while (c >= '0' && c <= '9')
c = phase1_getc ();
}
phase1_ungetc (c);
tp->type = token_type_number;
return;
}
else if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
|| c == '_')
{
string_start ();
while ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
|| c == '_' || (c >= '0' && c <= '9'))
{
string_add (c);
c = phase1_getc ();
}
string_end ();
phase1_ungetc (c);
if (strcmp (string_buf, "not") == 0)
tp->type = token_type_operator1;
else if (strcmp (string_buf, "and") == 0)
tp->type = token_type_operator2;
else if (strcmp (string_buf, "or") == 0)
tp->type = token_type_operator2;
else
{
tp->string = xstrdup (string_buf);
tp->type = token_type_symbol;
}
return;
}
else
tp->type = token_type_other;
}
}
}
static int
phase2_getc ()
{
int c;
int lineno;
c = phase1_getc ();
if (c == '-')
{
c = phase1_getc ();
if (c == '-')
{
/* It starts with '--', so it must be either a short or a long
comment. */
c = phase1_getc ();
if (c == '[')
{
c = phase1_getc ();
int esigns = 0;
while (c == '=')
{
esigns++;
c = phase1_getc ();
}
if (c == '[')
{
/* Long comment. */
bool right_bracket = false;
bool end = false;
int esigns2 = 0;
lineno = line_number;
comment_start ();
while (!end)
{
c = phase1_getc ();
if (c == EOF)
break;
/* Ignore leading spaces and tabs. */
if (buflen == 0 && (c == ' ' || c == '\t'))
continue;
comment_add (c);
switch (c)
{
case ']':
if (!right_bracket)
{
right_bracket = true;
esigns2 = 0;
}
else
{
if (esigns2 == esigns)
{
comment_line_end (2 + esigns);
end = true;
}
}
break;
case '=':
if (right_bracket)
esigns2++;
break;
case '\n':
comment_line_end (1);
comment_start ();
lineno = line_number;
/* Intentionally not breaking. */
default:
right_bracket = false;
}
}
last_comment_line = lineno;
return ' ';
}
else
{
/* One line (short) comment, starting with '--[=...='. */
lineno = last_comment_line;
comment_start ();
comment_add ('[');
while (esigns--)
comment_add ('=');
phase1_ungetc (c);
eat_comment_line ();
last_comment_line = lineno;
return '\n';
}
}
else
{
/* One line (short) comment. */
lineno = line_number;
comment_start ();
phase1_ungetc (c);
eat_comment_line ();
last_comment_line = lineno;
return '\n';
}
}
else
{
/* Minus sign. */
phase1_ungetc (c);
return '-';
}
}
else
return c;
}
