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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. | |
b85d18e9 | 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 | |
22c35a8c | 30 | REG_ANY REG_ANY, no Match any one character (except newline). |
22c35a8c | 31 | SANY REG_ANY, no Match any one character. |
f33976b4 | 32 | CANY REG_ANY, no Match any one byte. |
d09b2d29 IZ |
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 | |
b8c5462f | 43 | DIGITL DIGIT, no Match any numeric character in locale |
d09b2d29 | 44 | NDIGIT NDIGIT, no Match any non-numeric character |
b8c5462f | 45 | NDIGITL NDIGIT, no Match any non-numeric character in locale |
a0ed51b3 | 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. |