2 # NAME \t TYPE, arg-description [num-args] [longjump-len] \t DESCRIPTION
4 # Empty rows and #-comment rows are ignored.
6 # Note that the order in this file is important.
8 # Add new regops to the end, and do not re-order the existing ops.
12 END END, no End of program.
13 SUCCEED END, no Return from a subroutine, basically.
16 BOL BOL, no Match "" at beginning of line.
17 MBOL BOL, no Same, assuming multiline.
18 SBOL BOL, no Same, assuming singleline.
19 EOS EOL, no Match "" at end of string.
20 EOL EOL, no Match "" at end of line.
21 MEOL EOL, no Same, assuming multiline.
22 SEOL EOL, no Same, assuming singleline.
23 BOUND BOUND, no Match "" at any word boundary
24 BOUNDL BOUND, no Match "" at any word boundary
25 NBOUND NBOUND, no Match "" at any word non-boundary
26 NBOUNDL NBOUND, no Match "" at any word non-boundary
27 GPOS GPOS, no Matches where last m//g left off.
29 # [Special] alternatives
30 REG_ANY REG_ANY, no Match any one character (except newline).
31 SANY REG_ANY, no Match any one character.
32 CANY REG_ANY, no Match any one byte.
33 ANYOF ANYOF, sv Match character in (or not in) this class.
34 ALNUM ALNUM, no Match any alphanumeric character
35 ALNUML ALNUM, no Match any alphanumeric char in locale
36 NALNUM NALNUM, no Match any non-alphanumeric character
37 NALNUML NALNUM, no Match any non-alphanumeric char in locale
38 SPACE SPACE, no Match any whitespace character
39 SPACEL SPACE, no Match any whitespace char in locale
40 NSPACE NSPACE, no Match any non-whitespace character
41 NSPACEL NSPACE, no Match any non-whitespace char in locale
42 DIGIT DIGIT, no Match any numeric character
43 DIGITL DIGIT, no Match any numeric character in locale
44 NDIGIT NDIGIT, no Match any non-numeric character
45 NDIGITL NDIGIT, no Match any non-numeric character in locale
46 CLUMP CLUMP, no Match any combining character sequence
48 # BRANCH The set of branches constituting a single choice are hooked
49 # together with their "next" pointers, since precedence prevents
50 # anything being concatenated to any individual branch. The
51 # "next" pointer of the last BRANCH in a choice points to the
52 # thing following the whole choice. This is also where the
53 # final "next" pointer of each individual branch points; each
54 # branch starts with the operand node of a BRANCH node.
56 BRANCH BRANCH, node Match this alternative, or the next...
58 # BACK Normal "next" pointers all implicitly point forward; BACK
59 # exists to make loop structures possible.
61 BACK BACK, no Match "", "next" ptr points backward.
64 EXACT EXACT, sv Match this string (preceded by length).
65 EXACTF EXACT, sv Match this string, folded (prec. by length).
66 EXACTFL EXACT, sv Match this string, folded in locale (w/len).
69 NOTHING NOTHING,no Match empty string.
70 # A variant of above which delimits a group, thus stops optimizations
71 TAIL NOTHING,no Match empty string. Can jump here from outside.
73 # STAR,PLUS '?', and complex '*' and '+', are implemented as circular
74 # BRANCH structures using BACK. Simple cases (one character
75 # per match) are implemented with STAR and PLUS for speed
76 # and to minimize recursive plunges.
78 STAR STAR, node Match this (simple) thing 0 or more times.
79 PLUS PLUS, node Match this (simple) thing 1 or more times.
81 CURLY CURLY, sv 2 Match this simple thing {n,m} times.
82 CURLYN CURLY, no 2 Match next-after-this simple thing
83 # {n,m} times, set parenths.
84 CURLYM CURLY, no 2 Match this medium-complex thing {n,m} times.
85 CURLYX CURLY, sv 2 Match this complex thing {n,m} times.
87 # This terminator creates a loop structure for CURLYX
88 WHILEM WHILEM, no Do curly processing and see if rest matches.
90 # OPEN,CLOSE,GROUPP ...are numbered at compile time.
91 OPEN OPEN, num 1 Mark this point in input as start of #n.
92 CLOSE CLOSE, num 1 Analogous to OPEN.
94 REF REF, num 1 Match some already matched string
95 REFF REF, num 1 Match already matched string, folded
96 REFFL REF, num 1 Match already matched string, folded in loc.
99 IFMATCH BRANCHJ,off 1 2 Succeeds if the following matches.
100 UNLESSM BRANCHJ,off 1 2 Fails if the following matches.
101 SUSPEND BRANCHJ,off 1 1 "Independent" sub-RE.
102 IFTHEN BRANCHJ,off 1 1 Switch, should be preceeded by switcher .
103 GROUPP GROUPP, num 1 Whether the group matched.
105 # Support for long RE
106 LONGJMP LONGJMP,off 1 1 Jump far away.
107 BRANCHJ BRANCHJ,off 1 1 BRANCH with long offset.
110 EVAL EVAL, evl 1 Execute some Perl code.
113 MINMOD MINMOD, no Next operator is not greedy.
114 LOGICAL LOGICAL,no Next opcode should set the flag only.
116 # This is not used yet
117 RENUM BRANCHJ,off 1 1 Group with independently numbered parens.
119 # This is not really a node, but an optimized away piece of a "long" node.
120 # To simplify debugging output, we mark it as if it were a node
121 OPTIMIZED NOTHING,off Placeholder for dump.
123 # Trie Related (behave the same as A|LIST|OF|WORDS would)
124 TRIE TRIE, trie 1 Match many EXACT(FL?)? at once. flags==type
125 TRIEC TRIE, trie 1 Trie + charclass. (unused at present)
127 # Special opcode with the property that no opcode in a compiled program
128 # will ever be of this type. Thus it can be used as a flag value that
129 # no other opcode has been seen. END is used similarly, in that an END
130 # node cant be optimized. So END implies "unoptimizable" and PSEUDO mean
131 # "not seen anything to optimize yet".
132 PSEUDO PSEUDO,off Pseudo opcode for internal use.