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