# Format: # NAME \t TYPE, arg-description [num-args] [longjump-len] \t DESCRIPTION # Empty rows and #-comment rows are ignored. # Exit points END END, no End of program. SUCCEED END, no Return from a subroutine, basically. # Anchors: BOL BOL, no Match "" at beginning of line. MBOL BOL, no Same, assuming multiline. SBOL BOL, no Same, assuming singleline. EOS EOL, no Match "" at end of string. EOL EOL, no Match "" at end of line. MEOL EOL, no Same, assuming multiline. SEOL EOL, no Same, assuming singleline. BOUND BOUND, no Match "" at any word boundary BOUNDL BOUND, no Match "" at any word boundary NBOUND NBOUND, no Match "" at any word non-boundary NBOUNDL NBOUND, no Match "" at any word non-boundary GPOS GPOS, no Matches where last m//g left off. # [Special] alternatives REG_ANY REG_ANY, no Match any one character (except newline). SANY REG_ANY, no Match any one character. CANY REG_ANY, no Match any one byte. ANYOF ANYOF, sv Match character in (or not in) this class. ALNUM ALNUM, no Match any alphanumeric character ALNUML ALNUM, no Match any alphanumeric char in locale NALNUM NALNUM, no Match any non-alphanumeric character NALNUML NALNUM, no Match any non-alphanumeric char in locale SPACE SPACE, no Match any whitespace character SPACEL SPACE, no Match any whitespace char in locale NSPACE NSPACE, no Match any non-whitespace character NSPACEL NSPACE, no Match any non-whitespace char in locale DIGIT DIGIT, no Match any numeric character DIGITL DIGIT, no Match any numeric character in locale NDIGIT NDIGIT, no Match any non-numeric character NDIGITL NDIGIT, no Match any non-numeric character in locale CLUMP CLUMP, no Match any combining character sequence # BRANCH The set of branches constituting a single choice are hooked # together with their "next" pointers, since precedence prevents # anything being concatenated to any individual branch. The # "next" pointer of the last BRANCH in a choice points to the # thing following the whole choice. This is also where the # final "next" pointer of each individual branch points; each # branch starts with the operand node of a BRANCH node. # BRANCH BRANCH, node Match this alternative, or the next... # BACK Normal "next" pointers all implicitly point forward; BACK # exists to make loop structures possible. # not used BACK BACK, no Match "", "next" ptr points backward. # Literals EXACT EXACT, sv Match this string (preceded by length). EXACTF EXACT, sv Match this string, folded (prec. by length). EXACTFL EXACT, sv Match this string, folded in locale (w/len). # Trie Related (behave the same as A|LIST|OF|WORDS would) TRIE TRIE, trie 1 Match one or more of many EXACT strings TRIEF TRIE, trie 1 Match one or more of many EXACTF strings TRIEFL TRIE, trie 1 Match one or more of many EXACTFL strings # Do nothing NOTHING NOTHING,no Match empty string. # A variant of above which delimits a group, thus stops optimizations TAIL NOTHING,no Match empty string. Can jump here from outside. # STAR,PLUS '?', and complex '*' and '+', are implemented as circular # BRANCH structures using BACK. Simple cases (one character # per match) are implemented with STAR and PLUS for speed # and to minimize recursive plunges. # STAR STAR, node Match this (simple) thing 0 or more times. PLUS PLUS, node Match this (simple) thing 1 or more times. CURLY CURLY, sv 2 Match this simple thing {n,m} times. CURLYN CURLY, no 2 Match next-after-this simple thing # {n,m} times, set parenths. CURLYM CURLY, no 2 Match this medium-complex thing {n,m} times. CURLYX CURLY, sv 2 Match this complex thing {n,m} times. # This terminator creates a loop structure for CURLYX WHILEM WHILEM, no Do curly processing and see if rest matches. # OPEN,CLOSE,GROUPP ...are numbered at compile time. OPEN OPEN, num 1 Mark this point in input as start of #n. CLOSE CLOSE, num 1 Analogous to OPEN. REF REF, num 1 Match some already matched string REFF REF, num 1 Match already matched string, folded REFFL REF, num 1 Match already matched string, folded in loc. # grouping assertions IFMATCH BRANCHJ,off 1 2 Succeeds if the following matches. UNLESSM BRANCHJ,off 1 2 Fails if the following matches. SUSPEND BRANCHJ,off 1 1 "Independent" sub-RE. IFTHEN BRANCHJ,off 1 1 Switch, should be preceeded by switcher . GROUPP GROUPP, num 1 Whether the group matched. # Support for long RE LONGJMP LONGJMP,off 1 1 Jump far away. BRANCHJ BRANCHJ,off 1 1 BRANCH with long offset. # The heavy worker EVAL EVAL, evl 1 Execute some Perl code. # Modifiers MINMOD MINMOD, no Next operator is not greedy. LOGICAL LOGICAL,no Next opcode should set the flag only. # This is not used yet RENUM BRANCHJ,off 1 1 Group with independently numbered parens. # This is not really a node, but an optimized away piece of a "long" node. # To simplify debugging output, we mark it as if it were a node OPTIMIZED NOTHING,off Placeholder for dump.