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1 | # Format: |
2 | # NAME \t TYPE, arg-description [num-args] [longjump-len] \t DESCRIPTION |
3 | |
4 | # Empty rows and #-comment rows are ignored. |
5 | |
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6 | # Note that the order in this file is important. |
7 | # |
8 | # Add new regops to the end, and do not re-order the existing ops. |
9 | # |
10 | |
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11 | # Exit points |
12 | END END, no End of program. |
13 | SUCCEED END, no Return from a subroutine, basically. |
14 | |
15 | # Anchors: |
16 | BOL BOL, no Match "" at beginning of line. |
17 | MBOL BOL, no Same, assuming multiline. |
18 | SBOL BOL, no Same, assuming singleline. |
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19 | EOS EOL, no Match "" at end of string. |
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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. |
28 | |
29 | # [Special] alternatives |
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30 | REG_ANY REG_ANY, no Match any one character (except newline). |
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31 | SANY REG_ANY, no Match any one character. |
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32 | CANY REG_ANY, no Match any one byte. |
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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 |
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43 | DIGITL DIGIT, no Match any numeric character in locale |
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44 | NDIGIT NDIGIT, no Match any non-numeric character |
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45 | NDIGITL NDIGIT, no Match any non-numeric character in locale |
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46 | CLUMP CLUMP, no Match any combining character sequence |
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47 | |
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. |
55 | # |
56 | BRANCH BRANCH, node Match this alternative, or the next... |
57 | |
58 | # BACK Normal "next" pointers all implicitly point forward; BACK |
59 | # exists to make loop structures possible. |
60 | # not used |
61 | BACK BACK, no Match "", "next" ptr points backward. |
62 | |
63 | # Literals |
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). |
67 | |
68 | # Do nothing |
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. |
72 | |
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. |
77 | # |
78 | STAR STAR, node Match this (simple) thing 0 or more times. |
79 | PLUS PLUS, node Match this (simple) thing 1 or more times. |
80 | |
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. |
86 | |
87 | # This terminator creates a loop structure for CURLYX |
88 | WHILEM WHILEM, no Do curly processing and see if rest matches. |
89 | |
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. |
93 | |
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. |
97 | |
98 | # grouping assertions |
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. |
104 | |
105 | # Support for long RE |
106 | LONGJMP LONGJMP,off 1 1 Jump far away. |
107 | BRANCHJ BRANCHJ,off 1 1 BRANCH with long offset. |
108 | |
109 | # The heavy worker |
110 | EVAL EVAL, evl 1 Execute some Perl code. |
111 | |
112 | # Modifiers |
113 | MINMOD MINMOD, no Next operator is not greedy. |
114 | LOGICAL LOGICAL,no Next opcode should set the flag only. |
115 | |
116 | # This is not used yet |
117 | RENUM BRANCHJ,off 1 1 Group with independently numbered parens. |
118 | |
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. |
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122 | |
123 | # Trie Related (behave the same as A|LIST|OF|WORDS would) |
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124 | TRIE TRIE, trie 1 Match many EXACT(FL?)? at once. flags==type |
125 | TRIEC TRIE, trie 1 Trie + charclass. (unused at present) |
126 | |
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. |