2 # NAME \t TYPE, arg-description [num-args] [longjump-len] \t DESCRIPTION
4 # Empty rows and #-comment rows are ignored.
7 END END, no End of program.
8 SUCCEED END, no Return from a subroutine, basically.
11 BOL BOL, no Match "" at beginning of line.
12 MBOL BOL, no Same, assuming multiline.
13 SBOL BOL, no Same, assuming singleline.
14 EOS EOL, no Match "" at end of string.
15 EOL EOL, no Match "" at end of line.
16 MEOL EOL, no Same, assuming multiline.
17 SEOL EOL, no Same, assuming singleline.
18 BOUND BOUND, no Match "" at any word boundary
19 BOUNDL BOUND, no Match "" at any word boundary
20 NBOUND NBOUND, no Match "" at any word non-boundary
21 NBOUNDL NBOUND, no Match "" at any word non-boundary
22 GPOS GPOS, no Matches where last m//g left off.
24 # [Special] alternatives
25 ANY ANY, no Match any one character (except newline).
26 SANY ANY, no Match any one character.
27 ANYOF ANYOF, sv Match character in (or not in) this class.
28 ALNUM ALNUM, no Match any alphanumeric character
29 ALNUML ALNUM, no Match any alphanumeric char in locale
30 NALNUM NALNUM, no Match any non-alphanumeric character
31 NALNUML NALNUM, no Match any non-alphanumeric char in locale
32 SPACE SPACE, no Match any whitespace character
33 SPACEL SPACE, no Match any whitespace char in locale
34 NSPACE NSPACE, no Match any non-whitespace character
35 NSPACEL NSPACE, no Match any non-whitespace char in locale
36 DIGIT DIGIT, no Match any numeric character
37 NDIGIT NDIGIT, no Match any non-numeric character
39 # BRANCH The set of branches constituting a single choice are hooked
40 # together with their "next" pointers, since precedence prevents
41 # anything being concatenated to any individual branch. The
42 # "next" pointer of the last BRANCH in a choice points to the
43 # thing following the whole choice. This is also where the
44 # final "next" pointer of each individual branch points; each
45 # branch starts with the operand node of a BRANCH node.
47 BRANCH BRANCH, node Match this alternative, or the next...
49 # BACK Normal "next" pointers all implicitly point forward; BACK
50 # exists to make loop structures possible.
52 BACK BACK, no Match "", "next" ptr points backward.
55 EXACT EXACT, sv Match this string (preceded by length).
56 EXACTF EXACT, sv Match this string, folded (prec. by length).
57 EXACTFL EXACT, sv Match this string, folded in locale (w/len).
60 NOTHING NOTHING,no Match empty string.
61 # A variant of above which delimits a group, thus stops optimizations
62 TAIL NOTHING,no Match empty string. Can jump here from outside.
64 # STAR,PLUS '?', and complex '*' and '+', are implemented as circular
65 # BRANCH structures using BACK. Simple cases (one character
66 # per match) are implemented with STAR and PLUS for speed
67 # and to minimize recursive plunges.
69 STAR STAR, node Match this (simple) thing 0 or more times.
70 PLUS PLUS, node Match this (simple) thing 1 or more times.
72 CURLY CURLY, sv 2 Match this simple thing {n,m} times.
73 CURLYN CURLY, no 2 Match next-after-this simple thing
74 # {n,m} times, set parenths.
75 CURLYM CURLY, no 2 Match this medium-complex thing {n,m} times.
76 CURLYX CURLY, sv 2 Match this complex thing {n,m} times.
78 # This terminator creates a loop structure for CURLYX
79 WHILEM WHILEM, no Do curly processing and see if rest matches.
81 # OPEN,CLOSE,GROUPP ...are numbered at compile time.
82 OPEN OPEN, num 1 Mark this point in input as start of #n.
83 CLOSE CLOSE, num 1 Analogous to OPEN.
85 REF REF, num 1 Match some already matched string
86 REFF REF, num 1 Match already matched string, folded
87 REFFL REF, num 1 Match already matched string, folded in loc.
90 IFMATCH BRANCHJ,off 1 2 Succeeds if the following matches.
91 UNLESSM BRANCHJ,off 1 2 Fails if the following matches.
92 SUSPEND BRANCHJ,off 1 1 "Independent" sub-RE.
93 IFTHEN BRANCHJ,off 1 1 Switch, should be preceeded by switcher .
94 GROUPP GROUPP, num 1 Whether the group matched.
97 LONGJMP LONGJMP,off 1 1 Jump far away.
98 BRANCHJ BRANCHJ,off 1 1 BRANCH with long offset.
101 EVAL EVAL, evl 1 Execute some Perl code.
104 MINMOD MINMOD, no Next operator is not greedy.
105 LOGICAL LOGICAL,no Next opcode should set the flag only.
107 # This is not used yet
108 RENUM BRANCHJ,off 1 1 Group with independently numbered parens.
110 # This is not really a node, but an optimized away piece of a "long" node.
111 # To simplify debugging output, we mark it as if it were a node
112 OPTIMIZED NOTHING,off Placeholder for dump.