* The main routine is yylex(), which returns the next token.
*/
+/*
+=head1 Lexer interface
+
+This is the lower layer of the Perl parser, managing characters and tokens.
+
+=for apidoc AmU|yy_parser *|PL_parser
+
+Pointer to a structure encapsulating the state of the parsing operation
+currently in progress. The pointer can be locally changed to perform
+a nested parse without interfering with the state of an outer parse.
+Individual members of C<PL_parser> have their own documentation.
+
+=cut
+*/
+
#include "EXTERN.h"
#define PERL_IN_TOKE_C
#include "perl.h"
{ OROP, TOKENTYPE_IVAL, "OROP" },
{ OROR, TOKENTYPE_NONE, "OROR" },
{ PACKAGE, TOKENTYPE_NONE, "PACKAGE" },
+ { PLUGEXPR, TOKENTYPE_OPVAL, "PLUGEXPR" },
+ { PLUGSTMT, TOKENTYPE_OPVAL, "PLUGSTMT" },
{ PMFUNC, TOKENTYPE_OPVAL, "PMFUNC" },
{ POSTDEC, TOKENTYPE_NONE, "POSTDEC" },
{ POSTINC, TOKENTYPE_NONE, "POSTINC" },
}
/*
+=for apidoc AmxU|SV *|PL_parser-E<gt>linestr
+
+Buffer scalar containing the chunk currently under consideration of the
+text currently being lexed. This is always a plain string scalar (for
+which C<SvPOK> is true). It is not intended to be used as a scalar by
+normal scalar means; instead refer to the buffer directly by the pointer
+variables described below.
+
+The lexer maintains various C<char*> pointers to things in the
+C<PL_parser-E<gt>linestr> buffer. If C<PL_parser-E<gt>linestr> is ever
+reallocated, all of these pointers must be updated. Don't attempt to
+do this manually, but rather use L</lex_grow_linestr> if you need to
+reallocate the buffer.
+
+The content of the text chunk in the buffer is commonly exactly one
+complete line of input, up to and including a newline terminator,
+but there are situations where it is otherwise. The octets of the
+buffer may be intended to be interpreted as either UTF-8 or Latin-1.
+The function L</lex_bufutf8> tells you which. Do not use the C<SvUTF8>
+flag on this scalar, which may disagree with it.
+
+For direct examination of the buffer, the variable
+L</PL_parser-E<gt>bufend> points to the end of the buffer. The current
+lexing position is pointed to by L</PL_parser-E<gt>bufptr>. Direct use
+of these pointers is usually preferable to examination of the scalar
+through normal scalar means.
+
+=for apidoc AmxU|char *|PL_parser-E<gt>bufend
+
+Direct pointer to the end of the chunk of text currently being lexed, the
+end of the lexer buffer. This is equal to C<SvPVX(PL_parser-E<gt>linestr)
++ SvCUR(PL_parser-E<gt>linestr)>. A NUL character (zero octet) is
+always located at the end of the buffer, and does not count as part of
+the buffer's contents.
+
+=for apidoc AmxU|char *|PL_parser-E<gt>bufptr
+
+Points to the current position of lexing inside the lexer buffer.
+Characters around this point may be freely examined, within
+the range delimited by C<SvPVX(L</PL_parser-E<gt>linestr>)> and
+L</PL_parser-E<gt>bufend>. The octets of the buffer may be intended to be
+interpreted as either UTF-8 or Latin-1, as indicated by L</lex_bufutf8>.
+
+Lexing code (whether in the Perl core or not) moves this pointer past
+the characters that it consumes. It is also expected to perform some
+bookkeeping whenever a newline character is consumed. This movement
+can be more conveniently performed by the function L</lex_read_to>,
+which handles newlines appropriately.
+
+Interpretation of the buffer's octets can be abstracted out by
+using the slightly higher-level functions L</lex_peek_unichar> and
+L</lex_read_unichar>.
+
+=for apidoc AmxU|char *|PL_parser-E<gt>linestart
+
+Points to the start of the current line inside the lexer buffer.
+This is useful for indicating at which column an error occurred, and
+not much else. This must be updated by any lexing code that consumes
+a newline; the function L</lex_read_to> handles this detail.
+
+=cut
+*/
+
+/*
+=for apidoc Amx|bool|lex_bufutf8
+
+Indicates whether the octets in the lexer buffer
+(L</PL_parser-E<gt>linestr>) should be interpreted as the UTF-8 encoding
+of Unicode characters. If not, they should be interpreted as Latin-1
+characters. This is analogous to the C<SvUTF8> flag for scalars.
+
+In UTF-8 mode, it is not guaranteed that the lexer buffer actually
+contains valid UTF-8. Lexing code must be robust in the face of invalid
+encoding.
+
+The actual C<SvUTF8> flag of the L</PL_parser-E<gt>linestr> scalar
+is significant, but not the whole story regarding the input character
+encoding. Normally, when a file is being read, the scalar contains octets
+and its C<SvUTF8> flag is off, but the octets should be interpreted as
+UTF-8 if the C<use utf8> pragma is in effect. During a string eval,
+however, the scalar may have the C<SvUTF8> flag on, and in this case its
+octets should be interpreted as UTF-8 unless the C<use bytes> pragma
+is in effect. This logic may change in the future; use this function
+instead of implementing the logic yourself.
+
+=cut
+*/
+
+bool
+Perl_lex_bufutf8(pTHX)
+{
+ return UTF;
+}
+
+/*
+=for apidoc Amx|char *|lex_grow_linestr|STRLEN len
+
+Reallocates the lexer buffer (L</PL_parser-E<gt>linestr>) to accommodate
+at least I<len> octets (including terminating NUL). Returns a
+pointer to the reallocated buffer. This is necessary before making
+any direct modification of the buffer that would increase its length.
+L</lex_stuff_pvn> provides a more convenient way to insert text into
+the buffer.
+
+Do not use C<SvGROW> or C<sv_grow> directly on C<PL_parser-E<gt>linestr>;
+this function updates all of the lexer's variables that point directly
+into the buffer.
+
+=cut
+*/
+
+char *
+Perl_lex_grow_linestr(pTHX_ STRLEN len)
+{
+ SV *linestr;
+ char *buf;
+ STRLEN bufend_pos, bufptr_pos, oldbufptr_pos, oldoldbufptr_pos;
+ STRLEN linestart_pos, last_uni_pos, last_lop_pos;
+ linestr = PL_parser->linestr;
+ buf = SvPVX(linestr);
+ if (len <= SvLEN(linestr))
+ return buf;
+ bufend_pos = PL_parser->bufend - buf;
+ bufptr_pos = PL_parser->bufptr - buf;
+ oldbufptr_pos = PL_parser->oldbufptr - buf;
+ oldoldbufptr_pos = PL_parser->oldoldbufptr - buf;
+ linestart_pos = PL_parser->linestart - buf;
+ last_uni_pos = PL_parser->last_uni ? PL_parser->last_uni - buf : 0;
+ last_lop_pos = PL_parser->last_lop ? PL_parser->last_lop - buf : 0;
+ buf = sv_grow(linestr, len);
+ PL_parser->bufend = buf + bufend_pos;
+ PL_parser->bufptr = buf + bufptr_pos;
+ PL_parser->oldbufptr = buf + oldbufptr_pos;
+ PL_parser->oldoldbufptr = buf + oldoldbufptr_pos;
+ PL_parser->linestart = buf + linestart_pos;
+ if (PL_parser->last_uni)
+ PL_parser->last_uni = buf + last_uni_pos;
+ if (PL_parser->last_lop)
+ PL_parser->last_lop = buf + last_lop_pos;
+ return buf;
+}
+
+/*
+=for apidoc Amx|void|lex_stuff_pvn|char *pv|STRLEN len|U32 flags
+
+Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>),
+immediately after the current lexing point (L</PL_parser-E<gt>bufptr>),
+reallocating the buffer if necessary. This means that lexing code that
+runs later will see the characters as if they had appeared in the input.
+It is not recommended to do this as part of normal parsing, and most
+uses of this facility run the risk of the inserted characters being
+interpreted in an unintended manner.
+
+The string to be inserted is represented by I<len> octets starting
+at I<pv>. These octets are interpreted as either UTF-8 or Latin-1,
+according to whether the C<LEX_STUFF_UTF8> flag is set in I<flags>.
+The characters are recoded for the lexer buffer, according to how the
+buffer is currently being interpreted (L</lex_bufutf8>). If a string
+to be interpreted is available as a Perl scalar, the L</lex_stuff_sv>
+function is more convenient.
+
+=cut
+*/
+
+void
+Perl_lex_stuff_pvn(pTHX_ char *pv, STRLEN len, U32 flags)
+{
+ char *bufptr;
+ PERL_ARGS_ASSERT_LEX_STUFF_PVN;
+ if (flags & ~(LEX_STUFF_UTF8))
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_stuff_pvn");
+ if (UTF) {
+ if (flags & LEX_STUFF_UTF8) {
+ goto plain_copy;
+ } else {
+ STRLEN highhalf = 0;
+ char *p, *e = pv+len;
+ for (p = pv; p != e; p++)
+ highhalf += !!(((U8)*p) & 0x80);
+ if (!highhalf)
+ goto plain_copy;
+ lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len+highhalf);
+ bufptr = PL_parser->bufptr;
+ Move(bufptr, bufptr+len+highhalf, PL_parser->bufend+1-bufptr, char);
+ PL_parser->bufend += len+highhalf;
+ for (p = pv; p != e; p++) {
+ U8 c = (U8)*p;
+ if (c & 0x80) {
+ *bufptr++ = (char)(0xc0 | (c >> 6));
+ *bufptr++ = (char)(0x80 | (c & 0x3f));
+ } else {
+ *bufptr++ = (char)c;
+ }
+ }
+ }
+ } else {
+ if (flags & LEX_STUFF_UTF8) {
+ STRLEN highhalf = 0;
+ char *p, *e = pv+len;
+ for (p = pv; p != e; p++) {
+ U8 c = (U8)*p;
+ if (c >= 0xc4) {
+ Perl_croak(aTHX_ "Lexing code attempted to stuff "
+ "non-Latin-1 character into Latin-1 input");
+ } else if (c >= 0xc2 && p+1 != e &&
+ (((U8)p[1]) & 0xc0) == 0x80) {
+ p++;
+ highhalf++;
+ } else if (c >= 0x80) {
+ /* malformed UTF-8 */
+ ENTER;
+ SAVESPTR(PL_warnhook);
+ PL_warnhook = PERL_WARNHOOK_FATAL;
+ utf8n_to_uvuni((U8*)p, e-p, NULL, 0);
+ LEAVE;
+ }
+ }
+ if (!highhalf)
+ goto plain_copy;
+ lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len-highhalf);
+ bufptr = PL_parser->bufptr;
+ Move(bufptr, bufptr+len-highhalf, PL_parser->bufend+1-bufptr, char);
+ PL_parser->bufend += len-highhalf;
+ for (p = pv; p != e; p++) {
+ U8 c = (U8)*p;
+ if (c & 0x80) {
+ *bufptr++ = (char)(((c & 0x3) << 6) | (p[1] & 0x3f));
+ p++;
+ } else {
+ *bufptr++ = (char)c;
+ }
+ }
+ } else {
+ plain_copy:
+ lex_grow_linestr(SvCUR(PL_parser->linestr)+1+len);
+ bufptr = PL_parser->bufptr;
+ Move(bufptr, bufptr+len, PL_parser->bufend+1-bufptr, char);
+ PL_parser->bufend += len;
+ Copy(pv, bufptr, len, char);
+ }
+ }
+}
+
+/*
+=for apidoc Amx|void|lex_stuff_sv|SV *sv|U32 flags
+
+Insert characters into the lexer buffer (L</PL_parser-E<gt>linestr>),
+immediately after the current lexing point (L</PL_parser-E<gt>bufptr>),
+reallocating the buffer if necessary. This means that lexing code that
+runs later will see the characters as if they had appeared in the input.
+It is not recommended to do this as part of normal parsing, and most
+uses of this facility run the risk of the inserted characters being
+interpreted in an unintended manner.
+
+The string to be inserted is the string value of I<sv>. The characters
+are recoded for the lexer buffer, according to how the buffer is currently
+being interpreted (L</lex_bufutf8>). If a string to be interpreted is
+not already a Perl scalar, the L</lex_stuff_pvn> function avoids the
+need to construct a scalar.
+
+=cut
+*/
+
+void
+Perl_lex_stuff_sv(pTHX_ SV *sv, U32 flags)
+{
+ char *pv;
+ STRLEN len;
+ PERL_ARGS_ASSERT_LEX_STUFF_SV;
+ if (flags)
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_stuff_sv");
+ pv = SvPV(sv, len);
+ lex_stuff_pvn(pv, len, flags | (SvUTF8(sv) ? LEX_STUFF_UTF8 : 0));
+}
+
+/*
+=for apidoc Amx|void|lex_unstuff|char *ptr
+
+Discards text about to be lexed, from L</PL_parser-E<gt>bufptr> up to
+I<ptr>. Text following I<ptr> will be moved, and the buffer shortened.
+This hides the discarded text from any lexing code that runs later,
+as if the text had never appeared.
+
+This is not the normal way to consume lexed text. For that, use
+L</lex_read_to>.
+
+=cut
+*/
+
+void
+Perl_lex_unstuff(pTHX_ char *ptr)
+{
+ char *buf, *bufend;
+ STRLEN unstuff_len;
+ PERL_ARGS_ASSERT_LEX_UNSTUFF;
+ buf = PL_parser->bufptr;
+ if (ptr < buf)
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_unstuff");
+ if (ptr == buf)
+ return;
+ bufend = PL_parser->bufend;
+ if (ptr > bufend)
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_unstuff");
+ unstuff_len = ptr - buf;
+ Move(ptr, buf, bufend+1-ptr, char);
+ SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) - unstuff_len);
+ PL_parser->bufend = bufend - unstuff_len;
+}
+
+/*
+=for apidoc Amx|void|lex_read_to|char *ptr
+
+Consume text in the lexer buffer, from L</PL_parser-E<gt>bufptr> up
+to I<ptr>. This advances L</PL_parser-E<gt>bufptr> to match I<ptr>,
+performing the correct bookkeeping whenever a newline character is passed.
+This is the normal way to consume lexed text.
+
+Interpretation of the buffer's octets can be abstracted out by
+using the slightly higher-level functions L</lex_peek_unichar> and
+L</lex_read_unichar>.
+
+=cut
+*/
+
+void
+Perl_lex_read_to(pTHX_ char *ptr)
+{
+ char *s;
+ PERL_ARGS_ASSERT_LEX_READ_TO;
+ s = PL_parser->bufptr;
+ if (ptr < s || ptr > PL_parser->bufend)
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_to");
+ for (; s != ptr; s++)
+ if (*s == '\n') {
+ CopLINE_inc(PL_curcop);
+ PL_parser->linestart = s+1;
+ }
+ PL_parser->bufptr = ptr;
+}
+
+/*
+=for apidoc Amx|void|lex_discard_to|char *ptr
+
+Discards the first part of the L</PL_parser-E<gt>linestr> buffer,
+up to I<ptr>. The remaining content of the buffer will be moved, and
+all pointers into the buffer updated appropriately. I<ptr> must not
+be later in the buffer than the position of L</PL_parser-E<gt>bufptr>:
+it is not permitted to discard text that has yet to be lexed.
+
+Normally it is not necessarily to do this directly, because it suffices to
+use the implicit discarding behaviour of L</lex_next_chunk> and things
+based on it. However, if a token stretches across multiple lines,
+and the lexing code has kept multiple lines of text in the buffer fof
+that purpose, then after completion of the token it would be wise to
+explicitly discard the now-unneeded earlier lines, to avoid future
+multi-line tokens growing the buffer without bound.
+
+=cut
+*/
+
+void
+Perl_lex_discard_to(pTHX_ char *ptr)
+{
+ char *buf;
+ STRLEN discard_len;
+ PERL_ARGS_ASSERT_LEX_DISCARD_TO;
+ buf = SvPVX(PL_parser->linestr);
+ if (ptr < buf)
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_discard_to");
+ if (ptr == buf)
+ return;
+ if (ptr > PL_parser->bufptr)
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_discard_to");
+ discard_len = ptr - buf;
+ if (PL_parser->oldbufptr < ptr)
+ PL_parser->oldbufptr = ptr;
+ if (PL_parser->oldoldbufptr < ptr)
+ PL_parser->oldoldbufptr = ptr;
+ if (PL_parser->last_uni && PL_parser->last_uni < ptr)
+ PL_parser->last_uni = NULL;
+ if (PL_parser->last_lop && PL_parser->last_lop < ptr)
+ PL_parser->last_lop = NULL;
+ Move(ptr, buf, PL_parser->bufend+1-ptr, char);
+ SvCUR_set(PL_parser->linestr, SvCUR(PL_parser->linestr) - discard_len);
+ PL_parser->bufend -= discard_len;
+ PL_parser->bufptr -= discard_len;
+ PL_parser->oldbufptr -= discard_len;
+ PL_parser->oldoldbufptr -= discard_len;
+ if (PL_parser->last_uni)
+ PL_parser->last_uni -= discard_len;
+ if (PL_parser->last_lop)
+ PL_parser->last_lop -= discard_len;
+}
+
+/*
+=for apidoc Amx|bool|lex_next_chunk|U32 flags
+
+Reads in the next chunk of text to be lexed, appending it to
+L</PL_parser-E<gt>linestr>. This should be called when lexing code has
+looked to the end of the current chunk and wants to know more. It is
+usual, but not necessary, for lexing to have consumed the entirety of
+the current chunk at this time.
+
+If L</PL_parser-E<gt>bufptr> is pointing to the very end of the current
+chunk (i.e., the current chunk has been entirely consumed), normally the
+current chunk will be discarded at the same time that the new chunk is
+read in. If I<flags> includes C<LEX_KEEP_PREVIOUS>, the current chunk
+will not be discarded. If the current chunk has not been entirely
+consumed, then it will not be discarded regardless of the flag.
+
+Returns true if some new text was added to the buffer, or false if the
+buffer has reached the end of the input text.
+
+=cut
+*/
+
+#define LEX_FAKE_EOF 0x80000000
+
+bool
+Perl_lex_next_chunk(pTHX_ U32 flags)
+{
+ SV *linestr;
+ char *buf;
+ STRLEN old_bufend_pos, new_bufend_pos;
+ STRLEN bufptr_pos, oldbufptr_pos, oldoldbufptr_pos;
+ STRLEN linestart_pos, last_uni_pos, last_lop_pos;
+ bool got_some_for_debugger = 0;
+ bool got_some;
+ if (flags & ~(LEX_KEEP_PREVIOUS|LEX_FAKE_EOF))
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_next_chunk");
+ linestr = PL_parser->linestr;
+ buf = SvPVX(linestr);
+ if (!(flags & LEX_KEEP_PREVIOUS) &&
+ PL_parser->bufptr == PL_parser->bufend) {
+ old_bufend_pos = bufptr_pos = oldbufptr_pos = oldoldbufptr_pos = 0;
+ linestart_pos = 0;
+ if (PL_parser->last_uni != PL_parser->bufend)
+ PL_parser->last_uni = NULL;
+ if (PL_parser->last_lop != PL_parser->bufend)
+ PL_parser->last_lop = NULL;
+ last_uni_pos = last_lop_pos = 0;
+ *buf = 0;
+ SvCUR(linestr) = 0;
+ } else {
+ old_bufend_pos = PL_parser->bufend - buf;
+ bufptr_pos = PL_parser->bufptr - buf;
+ oldbufptr_pos = PL_parser->oldbufptr - buf;
+ oldoldbufptr_pos = PL_parser->oldoldbufptr - buf;
+ linestart_pos = PL_parser->linestart - buf;
+ last_uni_pos = PL_parser->last_uni ? PL_parser->last_uni - buf : 0;
+ last_lop_pos = PL_parser->last_lop ? PL_parser->last_lop - buf : 0;
+ }
+ if (flags & LEX_FAKE_EOF) {
+ goto eof;
+ } else if (!PL_parser->rsfp) {
+ got_some = 0;
+ } else if (filter_gets(linestr, old_bufend_pos)) {
+ got_some = 1;
+ got_some_for_debugger = 1;
+ } else {
+ if (!SvPOK(linestr)) /* can get undefined by filter_gets */
+ sv_setpvs(linestr, "");
+ eof:
+ /* End of real input. Close filehandle (unless it was STDIN),
+ * then add implicit termination.
+ */
+ if ((PerlIO*)PL_parser->rsfp == PerlIO_stdin())
+ PerlIO_clearerr(PL_parser->rsfp);
+ else if (PL_parser->rsfp)
+ (void)PerlIO_close(PL_parser->rsfp);
+ PL_parser->rsfp = NULL;
+ PL_doextract = FALSE;
+#ifdef PERL_MAD
+ if (PL_madskills && !PL_in_eval && (PL_minus_p || PL_minus_n))
+ PL_faketokens = 1;
+#endif
+ if (!PL_in_eval && PL_minus_p) {
+ sv_catpvs(linestr,
+ /*{*/";}continue{print or die qq(-p destination: $!\\n);}");
+ PL_minus_n = PL_minus_p = 0;
+ } else if (!PL_in_eval && PL_minus_n) {
+ sv_catpvs(linestr, /*{*/";}");
+ PL_minus_n = 0;
+ } else
+ sv_catpvs(linestr, ";");
+ got_some = 1;
+ }
+ buf = SvPVX(linestr);
+ new_bufend_pos = SvCUR(linestr);
+ PL_parser->bufend = buf + new_bufend_pos;
+ PL_parser->bufptr = buf + bufptr_pos;
+ PL_parser->oldbufptr = buf + oldbufptr_pos;
+ PL_parser->oldoldbufptr = buf + oldoldbufptr_pos;
+ PL_parser->linestart = buf + linestart_pos;
+ if (PL_parser->last_uni)
+ PL_parser->last_uni = buf + last_uni_pos;
+ if (PL_parser->last_lop)
+ PL_parser->last_lop = buf + last_lop_pos;
+ if (got_some_for_debugger && (PERLDB_LINE || PERLDB_SAVESRC) &&
+ PL_curstash != PL_debstash) {
+ /* debugger active and we're not compiling the debugger code,
+ * so store the line into the debugger's array of lines
+ */
+ update_debugger_info(NULL, buf+old_bufend_pos,
+ new_bufend_pos-old_bufend_pos);
+ }
+ return got_some;
+}
+
+/*
+=for apidoc Amx|I32|lex_peek_unichar|U32 flags
+
+Looks ahead one (Unicode) character in the text currently being lexed.
+Returns the codepoint (unsigned integer value) of the next character,
+or -1 if lexing has reached the end of the input text. To consume the
+peeked character, use L</lex_read_unichar>.
+
+If the next character is in (or extends into) the next chunk of input
+text, the next chunk will be read in. Normally the current chunk will be
+discarded at the same time, but if I<flags> includes C<LEX_KEEP_PREVIOUS>
+then the current chunk will not be discarded.
+
+If the input is being interpreted as UTF-8 and a UTF-8 encoding error
+is encountered, an exception is generated.
+
+=cut
+*/
+
+I32
+Perl_lex_peek_unichar(pTHX_ U32 flags)
+{
+ char *s, *bufend;
+ if (flags & ~(LEX_KEEP_PREVIOUS))
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_peek_unichar");
+ s = PL_parser->bufptr;
+ bufend = PL_parser->bufend;
+ if (UTF) {
+ U8 head;
+ I32 unichar;
+ STRLEN len, retlen;
+ if (s == bufend) {
+ if (!lex_next_chunk(flags))
+ return -1;
+ s = PL_parser->bufptr;
+ bufend = PL_parser->bufend;
+ }
+ head = (U8)*s;
+ if (!(head & 0x80))
+ return head;
+ if (head & 0x40) {
+ len = PL_utf8skip[head];
+ while ((STRLEN)(bufend-s) < len) {
+ if (!lex_next_chunk(flags | LEX_KEEP_PREVIOUS))
+ break;
+ s = PL_parser->bufptr;
+ bufend = PL_parser->bufend;
+ }
+ }
+ unichar = utf8n_to_uvuni((U8*)s, bufend-s, &retlen, UTF8_CHECK_ONLY);
+ if (retlen == (STRLEN)-1) {
+ /* malformed UTF-8 */
+ ENTER;
+ SAVESPTR(PL_warnhook);
+ PL_warnhook = PERL_WARNHOOK_FATAL;
+ utf8n_to_uvuni((U8*)s, bufend-s, NULL, 0);
+ LEAVE;
+ }
+ return unichar;
+ } else {
+ if (s == bufend) {
+ if (!lex_next_chunk(flags))
+ return -1;
+ s = PL_parser->bufptr;
+ }
+ return (U8)*s;
+ }
+}
+
+/*
+=for apidoc Amx|I32|lex_read_unichar|U32 flags
+
+Reads the next (Unicode) character in the text currently being lexed.
+Returns the codepoint (unsigned integer value) of the character read,
+and moves L</PL_parser-E<gt>bufptr> past the character, or returns -1
+if lexing has reached the end of the input text. To non-destructively
+examine the next character, use L</lex_peek_unichar> instead.
+
+If the next character is in (or extends into) the next chunk of input
+text, the next chunk will be read in. Normally the current chunk will be
+discarded at the same time, but if I<flags> includes C<LEX_KEEP_PREVIOUS>
+then the current chunk will not be discarded.
+
+If the input is being interpreted as UTF-8 and a UTF-8 encoding error
+is encountered, an exception is generated.
+
+=cut
+*/
+
+I32
+Perl_lex_read_unichar(pTHX_ U32 flags)
+{
+ I32 c;
+ if (flags & ~(LEX_KEEP_PREVIOUS))
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_unichar");
+ c = lex_peek_unichar(flags);
+ if (c != -1) {
+ if (c == '\n')
+ CopLINE_inc(PL_curcop);
+ PL_parser->bufptr += UTF8SKIP(PL_parser->bufptr);
+ }
+ return c;
+}
+
+/*
+=for apidoc Amx|void|lex_read_space|U32 flags
+
+Reads optional spaces, in Perl style, in the text currently being
+lexed. The spaces may include ordinary whitespace characters and
+Perl-style comments. C<#line> directives are processed if encountered.
+L</PL_parser-E<gt>bufptr> is moved past the spaces, so that it points
+at a non-space character (or the end of the input text).
+
+If spaces extend into the next chunk of input text, the next chunk will
+be read in. Normally the current chunk will be discarded at the same
+time, but if I<flags> includes C<LEX_KEEP_PREVIOUS> then the current
+chunk will not be discarded.
+
+=cut
+*/
+
+void
+Perl_lex_read_space(pTHX_ U32 flags)
+{
+ char *s, *bufend;
+ bool need_incline = 0;
+ if (flags & ~(LEX_KEEP_PREVIOUS))
+ Perl_croak(aTHX_ "Lexing code internal error (%s)", "lex_read_space");
+#ifdef PERL_MAD
+ if (PL_skipwhite) {
+ sv_free(PL_skipwhite);
+ PL_skipwhite = NULL;
+ }
+ if (PL_madskills)
+ PL_skipwhite = newSVpvs("");
+#endif /* PERL_MAD */
+ s = PL_parser->bufptr;
+ bufend = PL_parser->bufend;
+ while (1) {
+ char c = *s;
+ if (c == '#') {
+ do {
+ c = *++s;
+ } while (!(c == '\n' || (c == 0 && s == bufend)));
+ } else if (c == '\n') {
+ s++;
+ PL_parser->linestart = s;
+ if (s == bufend)
+ need_incline = 1;
+ else
+ incline(s);
+ } else if (isSPACE(c)) {
+ s++;
+ } else if (c == 0 && s == bufend) {
+ bool got_more;
+#ifdef PERL_MAD
+ if (PL_madskills)
+ sv_catpvn(PL_skipwhite, PL_parser->bufptr, s-PL_parser->bufptr);
+#endif /* PERL_MAD */
+ PL_parser->bufptr = s;
+ CopLINE_inc(PL_curcop);
+ got_more = lex_next_chunk(flags);
+ CopLINE_dec(PL_curcop);
+ s = PL_parser->bufptr;
+ bufend = PL_parser->bufend;
+ if (!got_more)
+ break;
+ if (need_incline && PL_parser->rsfp) {
+ incline(s);
+ need_incline = 0;
+ }
+ } else {
+ break;
+ }
+ }
+#ifdef PERL_MAD
+ if (PL_madskills)
+ sv_catpvn(PL_skipwhite, PL_parser->bufptr, s-PL_parser->bufptr);
+#endif /* PERL_MAD */
+ PL_parser->bufptr = s;
+}
+
+/*
* S_incline
* This subroutine has nothing to do with tilting, whether at windmills
* or pinball tables. Its name is short for "increment line". It
STATIC char *
S_skipspace(pTHX_ register char *s)
{
- dVAR;
#ifdef PERL_MAD
- int curoff;
- int startoff = s - SvPVX(PL_linestr);
-
+ char *start = s;
+#endif /* PERL_MAD */
PERL_ARGS_ASSERT_SKIPSPACE;
-
+#ifdef PERL_MAD
if (PL_skipwhite) {
sv_free(PL_skipwhite);
- PL_skipwhite = 0;
+ PL_skipwhite = NULL;
}
-#endif
- PERL_ARGS_ASSERT_SKIPSPACE;
-
+#endif /* PERL_MAD */
if (PL_lex_formbrack && PL_lex_brackets <= PL_lex_formbrack) {
while (s < PL_bufend && SPACE_OR_TAB(*s))
s++;
-#ifdef PERL_MAD
- goto done;
-#else
- return s;
-#endif
- }
- for (;;) {
- STRLEN prevlen;
- SSize_t oldprevlen, oldoldprevlen;
- SSize_t oldloplen = 0, oldunilen = 0;
- while (s < PL_bufend && isSPACE(*s)) {
- if (*s++ == '\n' && PL_in_eval && !PL_rsfp)
- incline(s);
- }
-
- /* comment */
- if (s < PL_bufend && *s == '#') {
- while (s < PL_bufend && *s != '\n')
- s++;
- if (s < PL_bufend) {
+ } else if (PL_sublex_info.sub_inwhat || PL_lex_state == LEX_FORMLINE) {
+ while (isSPACE(*s) && *s != '\n')
+ s++;
+ if (*s == '#') {
+ do {
s++;
- if (PL_in_eval && !PL_rsfp) {
- incline(s);
- continue;
- }
- }
+ } while (s != PL_bufend && *s != '\n');
}
-
- /* only continue to recharge the buffer if we're at the end
- * of the buffer, we're not reading from a source filter, and
- * we're in normal lexing mode
- */
- if (s < PL_bufend || !PL_rsfp || PL_sublex_info.sub_inwhat ||
- PL_lex_state == LEX_FORMLINE)
-#ifdef PERL_MAD
- goto done;
-#else
- return s;
-#endif
-
- /* try to recharge the buffer */
-#ifdef PERL_MAD
- curoff = s - SvPVX(PL_linestr);
-#endif
-
- if ((s = filter_gets(PL_linestr, (prevlen = SvCUR(PL_linestr))))
- == NULL)
- {
-#ifdef PERL_MAD
- if (PL_madskills && curoff != startoff) {
- if (!PL_skipwhite)
- PL_skipwhite = newSVpvs("");
- sv_catpvn(PL_skipwhite, SvPVX(PL_linestr) + startoff,
- curoff - startoff);
- }
-
- /* mustn't throw out old stuff yet if madpropping */
- SvCUR(PL_linestr) = curoff;
- s = SvPVX(PL_linestr) + curoff;
- *s = 0;
- if (curoff && s[-1] == '\n')
- s[-1] = ' ';
-#endif
-
- /* end of file. Add on the -p or -n magic */
- /* XXX these shouldn't really be added here, can't set PL_faketokens */
- if (PL_minus_p) {
-#ifdef PERL_MAD
- sv_catpvs(PL_linestr,
- ";}continue{print or die qq(-p destination: $!\\n);}");
-#else
- sv_setpvs(PL_linestr,
- ";}continue{print or die qq(-p destination: $!\\n);}");
-#endif
- PL_minus_n = PL_minus_p = 0;
- }
- else if (PL_minus_n) {
-#ifdef PERL_MAD
- sv_catpvs(PL_linestr, ";}");
-#else
- sv_setpvs(PL_linestr, ";}");
-#endif
- PL_minus_n = 0;
- }
- else
-#ifdef PERL_MAD
- sv_catpvs(PL_linestr,";");
-#else
- sv_setpvs(PL_linestr,";");
-#endif
-
- /* reset variables for next time we lex */
- PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = s = PL_linestart
- = SvPVX(PL_linestr)
-#ifdef PERL_MAD
- + curoff
-#endif
- ;
- PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
- PL_last_lop = PL_last_uni = NULL;
-
- /* Close the filehandle. Could be from
- * STDIN, or a regular file. If we were reading code from
- * STDIN (because the commandline held no -e or filename)
- * then we don't close it, we reset it so the code can
- * read from STDIN too.
- */
-
- if ((PerlIO*)PL_rsfp == PerlIO_stdin())
- PerlIO_clearerr(PL_rsfp);
- else
- (void)PerlIO_close(PL_rsfp);
- PL_rsfp = NULL;
- return s;
- }
-
- /* not at end of file, so we only read another line */
- /* make corresponding updates to old pointers, for yyerror() */
- oldprevlen = PL_oldbufptr - PL_bufend;
- oldoldprevlen = PL_oldoldbufptr - PL_bufend;
- if (PL_last_uni)
- oldunilen = PL_last_uni - PL_bufend;
- if (PL_last_lop)
- oldloplen = PL_last_lop - PL_bufend;
- PL_linestart = PL_bufptr = s + prevlen;
- PL_bufend = s + SvCUR(PL_linestr);
+ if (*s == '\n')
+ s++;
+ } else {
+ STRLEN bufptr_pos = PL_bufptr - SvPVX(PL_linestr);
+ PL_bufptr = s;
+ lex_read_space(LEX_KEEP_PREVIOUS);
s = PL_bufptr;
- PL_oldbufptr = s + oldprevlen;
- PL_oldoldbufptr = s + oldoldprevlen;
- if (PL_last_uni)
- PL_last_uni = s + oldunilen;
- if (PL_last_lop)
- PL_last_lop = s + oldloplen;
- incline(s);
-
- /* debugger active and we're not compiling the debugger code,
- * so store the line into the debugger's array of lines
- */
- if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash)
- update_debugger_info(NULL, PL_bufptr, PL_bufend - PL_bufptr);
+ PL_bufptr = SvPVX(PL_linestr) + bufptr_pos;
+ if (PL_linestart > PL_bufptr)
+ PL_bufptr = PL_linestart;
+ return s;
}
-
#ifdef PERL_MAD
- done:
- if (PL_madskills) {
- if (!PL_skipwhite)
- PL_skipwhite = newSVpvs("");
- curoff = s - SvPVX(PL_linestr);
- if (curoff - startoff)
- sv_catpvn(PL_skipwhite, SvPVX(PL_linestr) + startoff,
- curoff - startoff);
- }
+ if (PL_madskills)
+ PL_skipwhite = newSVpvn(start, s-start);
+#endif /* PERL_MAD */
return s;
-#endif
}
/*
register char *d;
STRLEN len;
bool bof = FALSE;
+ U32 fake_eof = 0;
/* orig_keyword, gvp, and gv are initialized here because
* jump to the label just_a_word_zero can bypass their
sv_catpvs(PL_linestr,
"use feature ':5." STRINGIFY(PERL_VERSION) "';");
if (PL_minus_n || PL_minus_p) {
- sv_catpvs(PL_linestr, "LINE: while (<>) {");
+ sv_catpvs(PL_linestr, "LINE: while (<>) {"/*}*/);
if (PL_minus_l)
sv_catpvs(PL_linestr,"chomp;");
if (PL_minus_a) {
goto retry;
}
do {
+ fake_eof = 0;
bof = PL_rsfp ? TRUE : FALSE;
- if ((s = filter_gets(PL_linestr, 0)) == NULL) {
+ if (0) {
fake_eof:
+ fake_eof = LEX_FAKE_EOF;
+ }
+ PL_bufptr = PL_bufend;
+ CopLINE_inc(PL_curcop);
+ if (!lex_next_chunk(fake_eof)) {
+ CopLINE_dec(PL_curcop);
+ s = PL_bufptr;
+ TOKEN(';'); /* not infinite loop because rsfp is NULL now */
+ }
+ CopLINE_dec(PL_curcop);
#ifdef PERL_MAD
+ if (!PL_rsfp)
PL_realtokenstart = -1;
#endif
- if (PL_rsfp) {
- if ((PerlIO *)PL_rsfp == PerlIO_stdin())
- PerlIO_clearerr(PL_rsfp);
- else
- (void)PerlIO_close(PL_rsfp);
- PL_rsfp = NULL;
- PL_doextract = FALSE;
- }
- if (!PL_in_eval && (PL_minus_n || PL_minus_p)) {
-#ifdef PERL_MAD
- if (PL_madskills)
- PL_faketokens = 1;
-#endif
- if (PL_minus_p)
- sv_setpvs(PL_linestr, ";}continue{print;}");
- else
- sv_setpvs(PL_linestr, ";}");
- PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr);
- PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
- PL_last_lop = PL_last_uni = NULL;
- PL_minus_n = PL_minus_p = 0;
- goto retry;
- }
- PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart = SvPVX(PL_linestr);
- PL_last_lop = PL_last_uni = NULL;
- sv_setpvs(PL_linestr,"");
- TOKEN(';'); /* not infinite loop because rsfp is NULL now */
- }
+ s = PL_bufptr;
/* If it looks like the start of a BOM or raw UTF-16,
* check if it in fact is. */
- else if (bof &&
+ if (bof && PL_rsfp &&
(*s == 0 ||
*(U8*)s == 0xEF ||
*(U8*)s >= 0xFE ||
s[1] == 0)) {
-#ifdef PERLIO_IS_STDIO
-# ifdef __GNU_LIBRARY__
-# if __GNU_LIBRARY__ == 1 /* Linux glibc5 */
-# define FTELL_FOR_PIPE_IS_BROKEN
-# endif
-# else
-# ifdef __GLIBC__
-# if __GLIBC__ == 1 /* maybe some glibc5 release had it like this? */
-# define FTELL_FOR_PIPE_IS_BROKEN
-# endif
-# endif
-# endif
-#endif
bof = PerlIO_tell(PL_rsfp) == (Off_t)SvCUR(PL_linestr);
if (bof) {
PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
incline(s);
} while (PL_doextract);
PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = s;
- if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash)
- update_debugger_info(PL_linestr, NULL, 0);
PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
PL_last_lop = PL_last_uni = NULL;
if (CopLINE(PL_curcop) == 1) {
if (!PL_in_my || PL_lex_state != LEX_NORMAL)
break;
PL_bufptr = s; /* update in case we back off */
+ if (*s == '=') {
+ deprecate(":= for an empty attribute list");
+ }
goto grabattrs;
case XATTRBLOCK:
PL_expect = XBLOCK;
d = s;
{
const char tmp = *s;
- if (PL_lex_state == LEX_NORMAL)
+ if (PL_lex_state == LEX_NORMAL || PL_lex_brackets)
s = SKIPSPACE1(s);
if ((PL_expect != XREF || PL_oldoldbufptr == PL_last_lop)
case 'z': case 'Z':
keylookup: {
+ bool anydelim;
I32 tmp;
orig_keyword = 0;
s = scan_word(s, PL_tokenbuf, sizeof PL_tokenbuf, FALSE, &len);
/* Some keywords can be followed by any delimiter, including ':' */
- tmp = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) ||
+ anydelim = ((len == 1 && strchr("msyq", PL_tokenbuf[0])) ||
(len == 2 && ((PL_tokenbuf[0] == 't' && PL_tokenbuf[1] == 'r') ||
(PL_tokenbuf[0] == 'q' &&
strchr("qwxr", PL_tokenbuf[1])))));
/* x::* is just a word, unless x is "CORE" */
- if (!tmp && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE"))
+ if (!anydelim && *s == ':' && s[1] == ':' && strNE(PL_tokenbuf, "CORE"))
goto just_a_word;
d = s;
while (d < PL_bufend && isSPACE(*d))
d++; /* no comments skipped here, or s### is misparsed */
- /* Is this a label? */
- if (!tmp && PL_expect == XSTATE
- && d < PL_bufend && *d == ':' && *(d + 1) != ':') {
- tmp = keyword(PL_tokenbuf, len, 0);
- if (tmp)
- Perl_croak(aTHX_ "Can't use keyword '%s' as a label", PL_tokenbuf);
- s = d + 1;
- pl_yylval.pval = CopLABEL_alloc(PL_tokenbuf);
- CLINE;
- TOKEN(LABEL);
- }
- else
- /* Check for keywords */
- tmp = keyword(PL_tokenbuf, len, 0);
-
/* Is this a word before a => operator? */
if (*d == '=' && d[1] == '>') {
CLINE;
TERM(WORD);
}
+ /* Check for plugged-in keyword */
+ {
+ OP *o;
+ int result;
+ char *saved_bufptr = PL_bufptr;
+ PL_bufptr = s;
+ result = CALL_FPTR(PL_keyword_plugin)(aTHX_ PL_tokenbuf, len, &o);
+ s = PL_bufptr;
+ if (result == KEYWORD_PLUGIN_DECLINE) {
+ /* not a plugged-in keyword */
+ PL_bufptr = saved_bufptr;
+ } else if (result == KEYWORD_PLUGIN_STMT) {
+ pl_yylval.opval = o;
+ CLINE;
+ PL_expect = XSTATE;
+ return REPORT(PLUGSTMT);
+ } else if (result == KEYWORD_PLUGIN_EXPR) {
+ pl_yylval.opval = o;
+ CLINE;
+ PL_expect = XOPERATOR;
+ return REPORT(PLUGEXPR);
+ } else {
+ Perl_croak(aTHX_ "Bad plugin affecting keyword '%s'",
+ PL_tokenbuf);
+ }
+ }
+
+ /* Check for built-in keyword */
+ tmp = keyword(PL_tokenbuf, len, 0);
+
+ /* Is this a label? */
+ if (!anydelim && PL_expect == XSTATE
+ && d < PL_bufend && *d == ':' && *(d + 1) != ':') {
+ if (tmp)
+ Perl_croak(aTHX_ "Can't use keyword '%s' as a label", PL_tokenbuf);
+ s = d + 1;
+ pl_yylval.pval = CopLABEL_alloc(PL_tokenbuf);
+ CLINE;
+ TOKEN(LABEL);
+ }
+
if (tmp < 0) { /* second-class keyword? */
GV *ogv = NULL; /* override (winner) */
GV *hgv = NULL; /* hidden (loser) */
SV *sv;
int pkgname = 0;
const char lastchar = (PL_bufptr == PL_oldoldbufptr ? 0 : PL_bufptr[-1]);
+ OP *rv2cv_op;
CV *cv;
#ifdef PERL_MAD
SV *nextPL_nextwhite = 0;
if (len)
goto safe_bareword;
- /* Do the explicit type check so that we don't need to force
- the initialisation of the symbol table to have a real GV.
- Beware - gv may not really be a PVGV, cv may not really be
- a PVCV, (because of the space optimisations that gv_init
- understands) But they're true if for this symbol there is
- respectively a typeglob and a subroutine.
- */
- cv = gv ? ((SvTYPE(gv) == SVt_PVGV)
- /* Real typeglob, so get the real subroutine: */
- ? GvCVu(gv)
- /* A proxy for a subroutine in this package? */
- : SvOK(gv) ? MUTABLE_CV(gv) : NULL)
- : NULL;
+ cv = NULL;
+ {
+ OP *const_op = newSVOP(OP_CONST, 0, SvREFCNT_inc(sv));
+ const_op->op_private = OPpCONST_BARE;
+ rv2cv_op = newCVREF(0, const_op);
+ }
+ if (rv2cv_op->op_type == OP_RV2CV &&
+ (rv2cv_op->op_flags & OPf_KIDS)) {
+ OP *rv_op = cUNOPx(rv2cv_op)->op_first;
+ switch (rv_op->op_type) {
+ case OP_CONST: {
+ SV *sv = cSVOPx_sv(rv_op);
+ if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV)
+ cv = (CV*)SvRV(sv);
+ } break;
+ case OP_GV: {
+ GV *gv = cGVOPx_gv(rv_op);
+ CV *maybe_cv = GvCVu(gv);
+ if (maybe_cv && SvTYPE((SV*)maybe_cv) == SVt_PVCV)
+ cv = maybe_cv;
+ } break;
+ }
+ }
/* See if it's the indirect object for a list operator. */
/* Two barewords in a row may indicate method call. */
if ((isIDFIRST_lazy_if(s,UTF) || *s == '$') &&
- (tmp = intuit_method(s, gv, cv)))
+ (tmp = intuit_method(s, gv, cv))) {
+ op_free(rv2cv_op);
return REPORT(tmp);
+ }
/* If not a declared subroutine, it's an indirect object. */
/* (But it's an indir obj regardless for sort.) */
if (
( !immediate_paren && (PL_last_lop_op == OP_SORT ||
- ((!gv || !cv) &&
+ (!cv &&
(PL_last_lop_op != OP_MAPSTART &&
PL_last_lop_op != OP_GREPSTART))))
|| (PL_tokenbuf[0] == '_' && PL_tokenbuf[1] == '\0'
/* Is this a word before a => operator? */
if (*s == '=' && s[1] == '>' && !pkgname) {
+ op_free(rv2cv_op);
CLINE;
sv_setpv(((SVOP*)pl_yylval.opval)->op_sv, PL_tokenbuf);
if (UTF && !IN_BYTES && is_utf8_string((U8*)PL_tokenbuf, len))
d = s + 1;
while (SPACE_OR_TAB(*d))
d++;
- if (*d == ')' && (sv = gv_const_sv(gv))) {
+ if (*d == ')' && (sv = cv_const_sv(cv))) {
s = d + 1;
goto its_constant;
}
PL_thistoken = newSVpvs("");
}
#endif
+ op_free(rv2cv_op);
force_next(WORD);
pl_yylval.ival = 0;
TOKEN('&');
/* If followed by var or block, call it a method (unless sub) */
- if ((*s == '$' || *s == '{') && (!gv || !cv)) {
+ if ((*s == '$' || *s == '{') && !cv) {
+ op_free(rv2cv_op);
PL_last_lop = PL_oldbufptr;
PL_last_lop_op = OP_METHOD;
PREBLOCK(METHOD);
if (!orig_keyword
&& (isIDFIRST_lazy_if(s,UTF) || *s == '$')
- && (tmp = intuit_method(s, gv, cv)))
+ && (tmp = intuit_method(s, gv, cv))) {
+ op_free(rv2cv_op);
return REPORT(tmp);
+ }
/* Not a method, so call it a subroutine (if defined) */
"Ambiguous use of -%s resolved as -&%s()",
PL_tokenbuf, PL_tokenbuf);
/* Check for a constant sub */
- if ((sv = gv_const_sv(gv))) {
+ if ((sv = cv_const_sv(cv))) {
its_constant:
+ op_free(rv2cv_op);
SvREFCNT_dec(((SVOP*)pl_yylval.opval)->op_sv);
((SVOP*)pl_yylval.opval)->op_sv = SvREFCNT_inc_simple(sv);
pl_yylval.opval->op_private = 0;
TOKEN(WORD);
}
- /* Resolve to GV now. */
- if (SvTYPE(gv) != SVt_PVGV) {
- gv = gv_fetchpv(PL_tokenbuf, 0, SVt_PVCV);
- assert (SvTYPE(gv) == SVt_PVGV);
- /* cv must have been some sort of placeholder, so
- now needs replacing with a real code reference. */
- cv = GvCV(gv);
- }
-
op_free(pl_yylval.opval);
- pl_yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
+ pl_yylval.opval = rv2cv_op;
pl_yylval.opval->op_private |= OPpENTERSUB_NOPAREN;
PL_last_lop = PL_oldbufptr;
PL_last_lop_op = OP_ENTERSUB;
if (probable_sub) {
gv = gv_fetchpv(PL_tokenbuf, GV_ADD, SVt_PVCV);
op_free(pl_yylval.opval);
- pl_yylval.opval = newCVREF(0, newGVOP(OP_GV, 0, gv));
+ pl_yylval.opval = rv2cv_op;
pl_yylval.opval->op_private |= OPpENTERSUB_NOPAREN;
PL_last_lop = PL_oldbufptr;
PL_last_lop_op = OP_ENTERSUB;
}
}
}
+ op_free(rv2cv_op);
safe_bareword:
if ((lastchar == '*' || lastchar == '%' || lastchar == '&')) {
yyerror(Perl_form(aTHX_ "No package name allowed for "
"variable %s in \"our\"",
PL_tokenbuf));
- tmp = allocmy(PL_tokenbuf);
+ tmp = allocmy(PL_tokenbuf, tokenbuf_len, 0);
}
else {
if (has_colon)
PL_in_my == KEY_my ? "my" : "state", PL_tokenbuf));
pl_yylval.opval = newOP(OP_PADANY, 0);
- pl_yylval.opval->op_targ = allocmy(PL_tokenbuf);
+ pl_yylval.opval->op_targ = allocmy(PL_tokenbuf, tokenbuf_len, 0);
return PRIVATEREF;
}
}
if (!has_colon) {
if (!PL_in_my)
- tmp = pad_findmy(PL_tokenbuf);
+ tmp = pad_findmy(PL_tokenbuf, tokenbuf_len, 0);
if (tmp != NOT_IN_PAD) {
/* might be an "our" variable" */
if (PAD_COMPNAME_FLAGS_isOUR(tmp)) {
PL_thisstuff = newSVpvn(tstart, PL_bufend - tstart);
}
#endif
- if (!outer ||
- !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart
- = filter_gets(PL_linestr, 0))) {
+ PL_bufptr = s;
+ CopLINE_inc(PL_curcop);
+ if (!outer || !lex_next_chunk(0)) {
CopLINE_set(PL_curcop, (line_t)PL_multi_start);
missingterm(PL_tokenbuf);
}
+ CopLINE_dec(PL_curcop);
+ s = PL_bufptr;
#ifdef PERL_MAD
stuffstart = s - SvPVX(PL_linestr);
#endif
else if (PL_bufend - PL_linestart == 1 && PL_bufend[-1] == '\r')
PL_bufend[-1] = '\n';
#endif
- if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash)
- update_debugger_info(PL_linestr, NULL, 0);
if (*s == term && memEQ(s,PL_tokenbuf,len)) {
STRLEN off = PL_bufend - 1 - SvPVX_const(PL_linestr);
*(SvPVX(PL_linestr) + off ) = ' ';
/* try to find it in the pad for this block, otherwise find
add symbol table ops
*/
- const PADOFFSET tmp = pad_findmy(d);
+ const PADOFFSET tmp = pad_findmy(d, len, 0);
if (tmp != NOT_IN_PAD) {
if (PAD_COMPNAME_FLAGS_isOUR(tmp)) {
HV * const stash = PAD_COMPNAME_OURSTASH(tmp);
PL_thisstuff = newSVpvn(tstart, PL_bufend - tstart);
}
#endif
- if (!PL_rsfp ||
- !(PL_oldoldbufptr = PL_oldbufptr = s = PL_linestart
- = filter_gets(PL_linestr, 0))) {
+ CopLINE_inc(PL_curcop);
+ PL_bufptr = PL_bufend;
+ if (!lex_next_chunk(0)) {
sv_free(sv);
CopLINE_set(PL_curcop, (line_t)PL_multi_start);
return NULL;
}
+ s = PL_bufptr;
#ifdef PERL_MAD
stuffstart = 0;
#endif
- /* we read a line, so increment our line counter */
- CopLINE_inc(PL_curcop);
-
- /* update debugger info */
- if ((PERLDB_LINE || PERLDB_SAVESRC) && PL_curstash != PL_debstash)
- update_debugger_info(PL_linestr, NULL, 0);
-
- /* having changed the buffer, we must update PL_bufend */
- PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
- PL_last_lop = PL_last_uni = NULL;
}
/* at this point, we have successfully read the delimited string */
}
s = (char*)eol;
if (PL_rsfp) {
+ bool got_some;
#ifdef PERL_MAD
if (PL_madskills) {
if (PL_thistoken)
PL_thistoken = newSVpvn(tokenstart, PL_bufend - tokenstart);
}
#endif
- s = filter_gets(PL_linestr, 0);
+ PL_bufptr = PL_bufend;
+ CopLINE_inc(PL_curcop);
+ got_some = lex_next_chunk(0);
+ CopLINE_dec(PL_curcop);
+ s = PL_bufptr;
#ifdef PERL_MAD
- tokenstart = PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr);
-#else
- PL_oldoldbufptr = PL_oldbufptr = PL_bufptr = PL_linestart = SvPVX(PL_linestr);
+ tokenstart = PL_bufptr;
#endif
- PL_bufend = PL_bufptr + SvCUR(PL_linestr);
- PL_last_lop = PL_last_uni = NULL;
- if (!s) {
- s = PL_bufptr;
+ if (!got_some)
break;
- }
}
incline(s);
}
SV *const utf16_buffer = MUTABLE_SV(IoTOP_GV(filter));
SV *const utf8_buffer = filter;
IV status = IoPAGE(filter);
- const bool reverse = IoLINES(filter);
+ const bool reverse = (bool) IoLINES(filter);
+ I32 retval;
/* As we're automatically added, at the lowest level, and hence only called
from this file, we can be sure that we're not called in block mode. Hence
nl = SvEND(utf8_buffer);
}
if (nl) {
- sv_catpvn(sv, SvPVX(utf8_buffer), nl - SvPVX(utf8_buffer));
+ STRLEN got = nl - SvPVX(utf8_buffer);
+ /* Did we have anything to append? */
+ retval = got != 0;
+ sv_catpvn(sv, SvPVX(utf8_buffer), got);
/* Everything else in this code works just fine if SVp_POK isn't
set. This, however, needs it, and we need it to work, else
we loop infinitely because the buffer is never consumed. */
status,
(UV)SvCUR(utf16_buffer), (UV)SvCUR(utf8_buffer)));
DEBUG_P({ sv_dump(utf8_buffer); sv_dump(sv);});
- return SvCUR(sv);
+ return retval;
}
static U8 *
return (char *)s;
}
+int
+Perl_keyword_plugin_standard(pTHX_
+ char *keyword_ptr, STRLEN keyword_len, OP **op_ptr)
+{
+ PERL_ARGS_ASSERT_KEYWORD_PLUGIN_STANDARD;
+ PERL_UNUSED_CONTEXT;
+ PERL_UNUSED_ARG(keyword_ptr);
+ PERL_UNUSED_ARG(keyword_len);
+ PERL_UNUSED_ARG(op_ptr);
+ return KEYWORD_PLUGIN_DECLINE;
+}
+
/*
* Local variables:
* c-indentation-style: bsd
https://perl5.git.perl.org / perl5.git / blobdiff