mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
113 lines
4.4 KiB
Plaintext
113 lines
4.4 KiB
Plaintext
# 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
|
|
ANY ANY, no Match any one character (except newline).
|
|
SANY ANY, no Match any one character.
|
|
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
|
|
NDIGIT NDIGIT, no Match any non-numeric character
|
|
|
|
# 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).
|
|
|
|
# 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.
|