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d09b2d29 IZ |
1 | # Format: |
2 | # NAME \t TYPE, arg-description [num-args] [longjump-len] \t DESCRIPTION | |
3 | ||
4 | # Empty rows and #-comment rows are ignored. | |
5 | ||
6 | # Exit points | |
7 | END END, no End of program. | |
8 | SUCCEED END, no Return from a subroutine, basically. | |
9 | ||
10 | # Anchors: | |
11 | BOL BOL, no Match "" at beginning of line. | |
12 | MBOL BOL, no Same, assuming multiline. | |
13 | SBOL BOL, no Same, assuming singleline. | |
b85d18e9 | 14 | EOS EOL, no Match "" at end of string. |
d09b2d29 IZ |
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. | |
23 | ||
24 | # [Special] alternatives | |
22c35a8c | 25 | REG_ANY REG_ANY, no Match any one character (except newline). |
22c35a8c | 26 | SANY REG_ANY, no Match any one character. |
f33976b4 | 27 | CANY REG_ANY, no Match any one byte. |
d09b2d29 IZ |
28 | ANYOF ANYOF, sv Match character in (or not in) this class. |
29 | ALNUM ALNUM, no Match any alphanumeric character | |
30 | ALNUML ALNUM, no Match any alphanumeric char in locale | |
31 | NALNUM NALNUM, no Match any non-alphanumeric character | |
32 | NALNUML NALNUM, no Match any non-alphanumeric char in locale | |
33 | SPACE SPACE, no Match any whitespace character | |
34 | SPACEL SPACE, no Match any whitespace char in locale | |
35 | NSPACE NSPACE, no Match any non-whitespace character | |
36 | NSPACEL NSPACE, no Match any non-whitespace char in locale | |
37 | DIGIT DIGIT, no Match any numeric character | |
b8c5462f | 38 | DIGITL DIGIT, no Match any numeric character in locale |
d09b2d29 | 39 | NDIGIT NDIGIT, no Match any non-numeric character |
b8c5462f | 40 | NDIGITL NDIGIT, no Match any non-numeric character in locale |
a0ed51b3 | 41 | CLUMP CLUMP, no Match any combining character sequence |
d09b2d29 IZ |
42 | |
43 | # BRANCH The set of branches constituting a single choice are hooked | |
44 | # together with their "next" pointers, since precedence prevents | |
45 | # anything being concatenated to any individual branch. The | |
46 | # "next" pointer of the last BRANCH in a choice points to the | |
47 | # thing following the whole choice. This is also where the | |
48 | # final "next" pointer of each individual branch points; each | |
49 | # branch starts with the operand node of a BRANCH node. | |
50 | # | |
51 | BRANCH BRANCH, node Match this alternative, or the next... | |
52 | ||
53 | # BACK Normal "next" pointers all implicitly point forward; BACK | |
54 | # exists to make loop structures possible. | |
55 | # not used | |
56 | BACK BACK, no Match "", "next" ptr points backward. | |
57 | ||
58 | # Literals | |
59 | EXACT EXACT, sv Match this string (preceded by length). | |
60 | EXACTF EXACT, sv Match this string, folded (prec. by length). | |
61 | EXACTFL EXACT, sv Match this string, folded in locale (w/len). | |
62 | ||
63 | # Do nothing | |
64 | NOTHING NOTHING,no Match empty string. | |
65 | # A variant of above which delimits a group, thus stops optimizations | |
66 | TAIL NOTHING,no Match empty string. Can jump here from outside. | |
67 | ||
68 | # STAR,PLUS '?', and complex '*' and '+', are implemented as circular | |
69 | # BRANCH structures using BACK. Simple cases (one character | |
70 | # per match) are implemented with STAR and PLUS for speed | |
71 | # and to minimize recursive plunges. | |
72 | # | |
73 | STAR STAR, node Match this (simple) thing 0 or more times. | |
74 | PLUS PLUS, node Match this (simple) thing 1 or more times. | |
75 | ||
76 | CURLY CURLY, sv 2 Match this simple thing {n,m} times. | |
77 | CURLYN CURLY, no 2 Match next-after-this simple thing | |
78 | # {n,m} times, set parenths. | |
79 | CURLYM CURLY, no 2 Match this medium-complex thing {n,m} times. | |
80 | CURLYX CURLY, sv 2 Match this complex thing {n,m} times. | |
81 | ||
82 | # This terminator creates a loop structure for CURLYX | |
83 | WHILEM WHILEM, no Do curly processing and see if rest matches. | |
84 | ||
85 | # OPEN,CLOSE,GROUPP ...are numbered at compile time. | |
86 | OPEN OPEN, num 1 Mark this point in input as start of #n. | |
87 | CLOSE CLOSE, num 1 Analogous to OPEN. | |
88 | ||
89 | REF REF, num 1 Match some already matched string | |
90 | REFF REF, num 1 Match already matched string, folded | |
91 | REFFL REF, num 1 Match already matched string, folded in loc. | |
92 | ||
93 | # grouping assertions | |
94 | IFMATCH BRANCHJ,off 1 2 Succeeds if the following matches. | |
95 | UNLESSM BRANCHJ,off 1 2 Fails if the following matches. | |
96 | SUSPEND BRANCHJ,off 1 1 "Independent" sub-RE. | |
97 | IFTHEN BRANCHJ,off 1 1 Switch, should be preceeded by switcher . | |
98 | GROUPP GROUPP, num 1 Whether the group matched. | |
99 | ||
100 | # Support for long RE | |
101 | LONGJMP LONGJMP,off 1 1 Jump far away. | |
102 | BRANCHJ BRANCHJ,off 1 1 BRANCH with long offset. | |
103 | ||
104 | # The heavy worker | |
105 | EVAL EVAL, evl 1 Execute some Perl code. | |
106 | ||
107 | # Modifiers | |
108 | MINMOD MINMOD, no Next operator is not greedy. | |
109 | LOGICAL LOGICAL,no Next opcode should set the flag only. | |
110 | ||
111 | # This is not used yet | |
112 | RENUM BRANCHJ,off 1 1 Group with independently numbered parens. | |
113 | ||
114 | # This is not really a node, but an optimized away piece of a "long" node. | |
115 | # To simplify debugging output, we mark it as if it were a node | |
116 | OPTIMIZED NOTHING,off Placeholder for dump. |