mirror of
https://github.com/neovim/neovim.git
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aee6f08ce1
problem: breakcheck might run arbitrary lua code, which might require modules and thus invoke runtime path calculation recursively. solution: Block the use of breakcheck when expanding glob patterns inside 'runtimepath' fixes #23012
5663 lines
157 KiB
C
5663 lines
157 KiB
C
// This is an open source non-commercial project. Dear PVS-Studio, please check
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// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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// Backtracking regular expression implementation.
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//
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// This file is included in "regexp.c".
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//
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// NOTICE:
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//
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// This is NOT the original regular expression code as written by Henry
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// Spencer. This code has been modified specifically for use with the VIM
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// editor, and should not be used separately from Vim. If you want a good
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// regular expression library, get the original code. The copyright notice
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// that follows is from the original.
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//
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// END NOTICE
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//
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// Copyright (c) 1986 by University of Toronto.
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// Written by Henry Spencer. Not derived from licensed software.
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//
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// Permission is granted to anyone to use this software for any
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// purpose on any computer system, and to redistribute it freely,
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// subject to the following restrictions:
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//
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// 1. The author is not responsible for the consequences of use of
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// this software, no matter how awful, even if they arise
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// from defects in it.
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//
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// 2. The origin of this software must not be misrepresented, either
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// by explicit claim or by omission.
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//
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// 3. Altered versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// Beware that some of this code is subtly aware of the way operator
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// precedence is structured in regular expressions. Serious changes in
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// regular-expression syntax might require a total rethink.
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//
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// Changes have been made by Tony Andrews, Olaf 'Rhialto' Seibert, Robert
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// Webb, Ciaran McCreesh and Bram Moolenaar.
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// Named character class support added by Walter Briscoe (1998 Jul 01)
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// The "internal use only" fields in regexp_defs.h are present to pass info from
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// compile to execute that permits the execute phase to run lots faster on
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// simple cases. They are:
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//
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// regstart char that must begin a match; NUL if none obvious; Can be a
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// multi-byte character.
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// reganch is the match anchored (at beginning-of-line only)?
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// regmust string (pointer into program) that match must include, or NULL
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// regmlen length of regmust string
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// regflags RF_ values or'ed together
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//
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// Regstart and reganch permit very fast decisions on suitable starting points
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// for a match, cutting down the work a lot. Regmust permits fast rejection
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// of lines that cannot possibly match. The regmust tests are costly enough
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// that vim_regcomp() supplies a regmust only if the r.e. contains something
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// potentially expensive (at present, the only such thing detected is * or +
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// at the start of the r.e., which can involve a lot of backup). Regmlen is
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// supplied because the test in vim_regexec() needs it and vim_regcomp() is
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// computing it anyway.
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// Structure for regexp "program". This is essentially a linear encoding
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// of a nondeterministic finite-state machine (aka syntax charts or
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// "railroad normal form" in parsing technology). Each node is an opcode
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// plus a "next" pointer, possibly plus an operand. "Next" pointers of
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// all nodes except BRANCH and BRACES_COMPLEX implement concatenation; a "next"
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// pointer with a BRANCH on both ends of it is connecting two alternatives.
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// (Here we have one of the subtle syntax dependencies: an individual BRANCH
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// (as opposed to a collection of them) is never concatenated with anything
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// because of operator precedence). The "next" pointer of a BRACES_COMPLEX
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// node points to the node after the stuff to be repeated.
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// The operand of some types of node is a literal string; for others, it is a
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// node leading into a sub-FSM. In particular, the operand of a BRANCH node
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// is the first node of the branch.
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// (NB this is *not* a tree structure: the tail of the branch connects to the
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// thing following the set of BRANCHes.)
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//
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// pattern is coded like:
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//
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// +-----------------+
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// | V
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// <aa>\|<bb> BRANCH <aa> BRANCH <bb> --> END
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// | ^ | ^
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// +------+ +----------+
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//
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//
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// +------------------+
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// V |
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// <aa>* BRANCH BRANCH <aa> --> BACK BRANCH --> NOTHING --> END
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// | | ^ ^
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// | +---------------+ |
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// +---------------------------------------------+
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//
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//
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// +----------------------+
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// V |
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// <aa>\+ BRANCH <aa> --> BRANCH --> BACK BRANCH --> NOTHING --> END
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// | | ^ ^
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// | +-----------+ |
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// +--------------------------------------------------+
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//
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//
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// +-------------------------+
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// V |
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// <aa>\{} BRANCH BRACE_LIMITS --> BRACE_COMPLEX <aa> --> BACK END
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// | | ^
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// | +----------------+
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// +-----------------------------------------------+
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//
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//
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// <aa>\@!<bb> BRANCH NOMATCH <aa> --> END <bb> --> END
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// | | ^ ^
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// | +----------------+ |
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// +--------------------------------+
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//
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// +---------+
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// | V
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// \z[abc] BRANCH BRANCH a BRANCH b BRANCH c BRANCH NOTHING --> END
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// | | | | ^ ^
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// | | | +-----+ |
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// | | +----------------+ |
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// | +---------------------------+ |
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// +------------------------------------------------------+
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//
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// They all start with a BRANCH for "\|" alternatives, even when there is only
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// one alternative.
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#include <assert.h>
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#include <inttypes.h>
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#include <stdbool.h>
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#include <string.h>
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#include "nvim/garray.h"
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#include "nvim/profile.h"
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#include "nvim/regexp.h"
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// The opcodes are:
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// definition number opnd? meaning
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#define END 0 // End of program or NOMATCH operand.
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#define BOL 1 // Match "" at beginning of line.
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#define EOL 2 // Match "" at end of line.
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#define BRANCH 3 // node Match this alternative, or the
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// next...
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#define BACK 4 // Match "", "next" ptr points backward.
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#define EXACTLY 5 // str Match this string.
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#define NOTHING 6 // Match empty string.
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#define STAR 7 // node Match this (simple) thing 0 or more
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// times.
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#define PLUS 8 // node Match this (simple) thing 1 or more
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// times.
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#define MATCH 9 // node match the operand zero-width
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#define NOMATCH 10 // node check for no match with operand
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#define BEHIND 11 // node look behind for a match with operand
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#define NOBEHIND 12 // node look behind for no match with operand
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#define SUBPAT 13 // node match the operand here
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#define BRACE_SIMPLE 14 // node Match this (simple) thing between m and
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// n times (\{m,n\}).
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#define BOW 15 // Match "" after [^a-zA-Z0-9_]
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#define EOW 16 // Match "" at [^a-zA-Z0-9_]
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#define BRACE_LIMITS 17 // nr nr define the min & max for BRACE_SIMPLE
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// and BRACE_COMPLEX.
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#define NEWL 18 // Match line-break
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#define BHPOS 19 // End position for BEHIND or NOBEHIND
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// character classes: 20-48 normal, 50-78 include a line-break
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#define ADD_NL 30
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#define FIRST_NL ANY + ADD_NL
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#define ANY 20 // Match any one character.
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#define ANYOF 21 // str Match any character in this string.
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#define ANYBUT 22 // str Match any character not in this
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// string.
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#define IDENT 23 // Match identifier char
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#define SIDENT 24 // Match identifier char but no digit
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#define KWORD 25 // Match keyword char
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#define SKWORD 26 // Match word char but no digit
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#define FNAME 27 // Match file name char
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#define SFNAME 28 // Match file name char but no digit
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#define PRINT 29 // Match printable char
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#define SPRINT 30 // Match printable char but no digit
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#define WHITE 31 // Match whitespace char
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#define NWHITE 32 // Match non-whitespace char
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#define DIGIT 33 // Match digit char
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#define NDIGIT 34 // Match non-digit char
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#define HEX 35 // Match hex char
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#define NHEX 36 // Match non-hex char
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#define OCTAL 37 // Match octal char
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#define NOCTAL 38 // Match non-octal char
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#define WORD 39 // Match word char
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#define NWORD 40 // Match non-word char
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#define HEAD 41 // Match head char
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#define NHEAD 42 // Match non-head char
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#define ALPHA 43 // Match alpha char
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#define NALPHA 44 // Match non-alpha char
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#define LOWER 45 // Match lowercase char
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#define NLOWER 46 // Match non-lowercase char
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#define UPPER 47 // Match uppercase char
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#define NUPPER 48 // Match non-uppercase char
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#define LAST_NL NUPPER + ADD_NL
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// -V:WITH_NL:560
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#define WITH_NL(op) ((op) >= FIRST_NL && (op) <= LAST_NL)
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#define MOPEN 80 // -89 Mark this point in input as start of
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// \( … \) subexpr. MOPEN + 0 marks start of
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// match.
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#define MCLOSE 90 // -99 Analogous to MOPEN. MCLOSE + 0 marks
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// end of match.
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#define BACKREF 100 // -109 node Match same string again \1-\9.
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#define ZOPEN 110 // -119 Mark this point in input as start of
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// \z( … \) subexpr.
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#define ZCLOSE 120 // -129 Analogous to ZOPEN.
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#define ZREF 130 // -139 node Match external submatch \z1-\z9
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#define BRACE_COMPLEX 140 // -149 node Match nodes between m & n times
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#define NOPEN 150 // Mark this point in input as start of
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// \%( subexpr.
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#define NCLOSE 151 // Analogous to NOPEN.
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#define MULTIBYTECODE 200 // mbc Match one multi-byte character
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#define RE_BOF 201 // Match "" at beginning of file.
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#define RE_EOF 202 // Match "" at end of file.
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#define CURSOR 203 // Match location of cursor.
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#define RE_LNUM 204 // nr cmp Match line number
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#define RE_COL 205 // nr cmp Match column number
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#define RE_VCOL 206 // nr cmp Match virtual column number
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#define RE_MARK 207 // mark cmp Match mark position
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#define RE_VISUAL 208 // Match Visual area
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#define RE_COMPOSING 209 // any composing characters
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// Flags to be passed up and down.
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#define HASWIDTH 0x1 // Known never to match null string.
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#define SIMPLE 0x2 // Simple enough to be STAR/PLUS operand.
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#define SPSTART 0x4 // Starts with * or +.
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#define HASNL 0x8 // Contains some \n.
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#define HASLOOKBH 0x10 // Contains "\@<=" or "\@<!".
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#define WORST 0 // Worst case.
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static int prevchr_len; ///< byte length of previous char
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static int num_complex_braces; ///< Complex \{...} count
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static uint8_t *regcode; ///< Code-emit pointer, or JUST_CALC_SIZE
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static long regsize; ///< Code size.
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static int reg_toolong; ///< true when offset out of range
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static uint8_t had_endbrace[NSUBEXP]; ///< flags, true if end of () found
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static long brace_min[10]; ///< Minimums for complex brace repeats
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static long brace_max[10]; ///< Maximums for complex brace repeats
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static int brace_count[10]; ///< Current counts for complex brace repeats
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static int one_exactly = false; ///< only do one char for EXACTLY
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// When making changes to classchars also change nfa_classcodes.
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static uint8_t *classchars = (uint8_t *)".iIkKfFpPsSdDxXoOwWhHaAlLuU";
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static int classcodes[] = {
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ANY, IDENT, SIDENT, KWORD, SKWORD,
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FNAME, SFNAME, PRINT, SPRINT,
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WHITE, NWHITE, DIGIT, NDIGIT,
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HEX, NHEX, OCTAL, NOCTAL,
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WORD, NWORD, HEAD, NHEAD,
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ALPHA, NALPHA, LOWER, NLOWER,
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UPPER, NUPPER
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};
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// When regcode is set to this value, code is not emitted and size is computed
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// instead.
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#define JUST_CALC_SIZE ((uint8_t *)-1)
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// Values for rs_state in regitem_T.
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typedef enum regstate_E {
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RS_NOPEN = 0, // NOPEN and NCLOSE
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RS_MOPEN, // MOPEN + [0-9]
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RS_MCLOSE, // MCLOSE + [0-9]
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RS_ZOPEN, // ZOPEN + [0-9]
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RS_ZCLOSE, // ZCLOSE + [0-9]
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RS_BRANCH, // BRANCH
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RS_BRCPLX_MORE, // BRACE_COMPLEX and trying one more match
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RS_BRCPLX_LONG, // BRACE_COMPLEX and trying longest match
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RS_BRCPLX_SHORT, // BRACE_COMPLEX and trying shortest match
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RS_NOMATCH, // NOMATCH
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RS_BEHIND1, // BEHIND / NOBEHIND matching rest
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RS_BEHIND2, // BEHIND / NOBEHIND matching behind part
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RS_STAR_LONG, // STAR/PLUS/BRACE_SIMPLE longest match
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RS_STAR_SHORT, // STAR/PLUS/BRACE_SIMPLE shortest match
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} regstate_T;
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// Structure used to save the current input state, when it needs to be
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// restored after trying a match. Used by reg_save() and reg_restore().
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// Also stores the length of "backpos".
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typedef struct {
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union {
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uint8_t *ptr; // rex.input pointer, for single-line regexp
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lpos_T pos; // rex.input pos, for multi-line regexp
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} rs_u;
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int rs_len;
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} regsave_T;
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// struct to save start/end pointer/position in for \(\)
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typedef struct {
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union {
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uint8_t *ptr;
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lpos_T pos;
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} se_u;
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} save_se_T;
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// used for BEHIND and NOBEHIND matching
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typedef struct regbehind_S {
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regsave_T save_after;
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regsave_T save_behind;
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int save_need_clear_subexpr;
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save_se_T save_start[NSUBEXP];
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save_se_T save_end[NSUBEXP];
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} regbehind_T;
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// When there are alternatives a regstate_T is put on the regstack to remember
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// what we are doing.
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// Before it may be another type of item, depending on rs_state, to remember
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// more things.
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typedef struct regitem_S {
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regstate_T rs_state; // what we are doing, one of RS_ above
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int16_t rs_no; // submatch nr or BEHIND/NOBEHIND
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uint8_t *rs_scan; // current node in program
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union {
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save_se_T sesave;
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regsave_T regsave;
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} rs_un; // room for saving rex.input
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} regitem_T;
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// used for STAR, PLUS and BRACE_SIMPLE matching
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typedef struct regstar_S {
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int nextb; // next byte
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int nextb_ic; // next byte reverse case
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long count;
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long minval;
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long maxval;
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} regstar_T;
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// used to store input position when a BACK was encountered, so that we now if
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// we made any progress since the last time.
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typedef struct backpos_S {
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uint8_t *bp_scan; // "scan" where BACK was encountered
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regsave_T bp_pos; // last input position
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} backpos_T;
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// "regstack" and "backpos" are used by regmatch(). They are kept over calls
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// to avoid invoking malloc() and free() often.
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// "regstack" is a stack with regitem_T items, sometimes preceded by regstar_T
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// or regbehind_T.
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// "backpos_T" is a table with backpos_T for BACK
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static garray_T regstack = GA_EMPTY_INIT_VALUE;
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static garray_T backpos = GA_EMPTY_INIT_VALUE;
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static regsave_T behind_pos;
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// Both for regstack and backpos tables we use the following strategy of
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// allocation (to reduce malloc/free calls):
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// - Initial size is fairly small.
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// - When needed, the tables are grown bigger (8 times at first, double after
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// that).
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// - After executing the match we free the memory only if the array has grown.
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// Thus the memory is kept allocated when it's at the initial size.
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// This makes it fast while not keeping a lot of memory allocated.
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// A three times speed increase was observed when using many simple patterns.
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#define REGSTACK_INITIAL 2048
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#define BACKPOS_INITIAL 64
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// Opcode notes:
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//
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// BRANCH The set of branches constituting a single choice are hooked
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// together with their "next" pointers, since precedence prevents
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// anything being concatenated to any individual branch. The
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// "next" pointer of the last BRANCH in a choice points to the
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// thing following the whole choice. This is also where the
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// final "next" pointer of each individual branch points; each
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// branch starts with the operand node of a BRANCH node.
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//
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// BACK Normal "next" pointers all implicitly point forward; BACK
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// exists to make loop structures possible.
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//
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// STAR,PLUS '=', and complex '*' and '+', are implemented as circular
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// BRANCH structures using BACK. Simple cases (one character
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// per match) are implemented with STAR and PLUS for speed
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// and to minimize recursive plunges.
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//
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// BRACE_LIMITS This is always followed by a BRACE_SIMPLE or BRACE_COMPLEX
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// node, and defines the min and max limits to be used for that
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// node.
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//
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// MOPEN,MCLOSE ...are numbered at compile time.
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// ZOPEN,ZCLOSE ...ditto
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///
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//
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//
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// A node is one char of opcode followed by two chars of "next" pointer.
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// "Next" pointers are stored as two 8-bit bytes, high order first. The
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// value is a positive offset from the opcode of the node containing it.
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// An operand, if any, simply follows the node. (Note that much of the
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// code generation knows about this implicit relationship.)
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//
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// Using two bytes for the "next" pointer is vast overkill for most things,
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// but allows patterns to get big without disasters.
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#define OP(p) ((int)(*(p)))
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#define NEXT(p) (((*((p) + 1) & 0377) << 8) + (*((p) + 2) & 0377))
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#define OPERAND(p) ((p) + 3)
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// Obtain an operand that was stored as four bytes, MSB first.
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#define OPERAND_MIN(p) (((long)(p)[3] << 24) + ((long)(p)[4] << 16) \
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+ ((long)(p)[5] << 8) + (long)(p)[6])
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// Obtain a second operand stored as four bytes.
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#define OPERAND_MAX(p) OPERAND_MIN((p) + 4)
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// Obtain a second single-byte operand stored after a four bytes operand.
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#define OPERAND_CMP(p) (p)[7]
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static uint8_t *reg(int paren, int *flagp);
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#ifdef BT_REGEXP_DUMP
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static void regdump(uint8_t *, bt_regprog_T *);
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#endif
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#ifdef REGEXP_DEBUG
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static uint8_t *regprop(uint8_t *);
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static int regnarrate = 0;
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#endif
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#ifdef INCLUDE_GENERATED_DECLARATIONS
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# include "regexp_bt.c.generated.h"
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#endif
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// Setup to parse the regexp. Used once to get the length and once to do it.
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static void regcomp_start(uint8_t *expr, int re_flags) // see vim_regcomp()
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{
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initchr((char *)expr);
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if (re_flags & RE_MAGIC) {
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reg_magic = MAGIC_ON;
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} else {
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reg_magic = MAGIC_OFF;
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}
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reg_string = (re_flags & RE_STRING);
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reg_strict = (re_flags & RE_STRICT);
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get_cpo_flags();
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|
|
num_complex_braces = 0;
|
|
regnpar = 1;
|
|
CLEAR_FIELD(had_endbrace);
|
|
regnzpar = 1;
|
|
re_has_z = 0;
|
|
regsize = 0L;
|
|
reg_toolong = false;
|
|
regflags = 0;
|
|
had_eol = false;
|
|
}
|
|
|
|
// Return true if MULTIBYTECODE should be used instead of EXACTLY for
|
|
// character "c".
|
|
static bool use_multibytecode(int c)
|
|
{
|
|
return utf_char2len(c) > 1
|
|
&& (re_multi_type(peekchr()) != NOT_MULTI
|
|
|| utf_iscomposing(c));
|
|
}
|
|
|
|
// Emit (if appropriate) a byte of code
|
|
static void regc(int b)
|
|
{
|
|
if (regcode == JUST_CALC_SIZE) {
|
|
regsize++;
|
|
} else {
|
|
*regcode++ = (uint8_t)b;
|
|
}
|
|
}
|
|
|
|
// Emit (if appropriate) a multi-byte character of code
|
|
static void regmbc(int c)
|
|
{
|
|
if (regcode == JUST_CALC_SIZE) {
|
|
regsize += utf_char2len(c);
|
|
} else {
|
|
regcode += utf_char2bytes(c, (char *)regcode);
|
|
}
|
|
}
|
|
|
|
// Produce the bytes for equivalence class "c".
|
|
// Currently only handles latin1, latin9 and utf-8.
|
|
// NOTE: When changing this function, also change nfa_emit_equi_class()
|
|
static void reg_equi_class(int c)
|
|
{
|
|
{
|
|
switch (c) {
|
|
// Do not use '\300' style, it results in a negative number.
|
|
case 'A':
|
|
case 0xc0:
|
|
case 0xc1:
|
|
case 0xc2:
|
|
case 0xc3:
|
|
case 0xc4:
|
|
case 0xc5:
|
|
case 0x100:
|
|
case 0x102:
|
|
case 0x104:
|
|
case 0x1cd:
|
|
case 0x1de:
|
|
case 0x1e0:
|
|
case 0x1fa:
|
|
case 0x202:
|
|
case 0x226:
|
|
case 0x23a:
|
|
case 0x1e00:
|
|
case 0x1ea0:
|
|
case 0x1ea2:
|
|
case 0x1ea4:
|
|
case 0x1ea6:
|
|
case 0x1ea8:
|
|
case 0x1eaa:
|
|
case 0x1eac:
|
|
case 0x1eae:
|
|
case 0x1eb0:
|
|
case 0x1eb2:
|
|
case 0x1eb4:
|
|
case 0x1eb6:
|
|
regmbc('A'); regmbc(0xc0); regmbc(0xc1); regmbc(0xc2);
|
|
regmbc(0xc3); regmbc(0xc4); regmbc(0xc5);
|
|
regmbc(0x100); regmbc(0x102); regmbc(0x104);
|
|
regmbc(0x1cd); regmbc(0x1de); regmbc(0x1e0);
|
|
regmbc(0x1fa); regmbc(0x202); regmbc(0x226);
|
|
regmbc(0x23a); regmbc(0x1e00); regmbc(0x1ea0);
|
|
regmbc(0x1ea2); regmbc(0x1ea4); regmbc(0x1ea6);
|
|
regmbc(0x1ea8); regmbc(0x1eaa); regmbc(0x1eac);
|
|
regmbc(0x1eae); regmbc(0x1eb0); regmbc(0x1eb2);
|
|
regmbc(0x1eb4); regmbc(0x1eb6);
|
|
return;
|
|
case 'B':
|
|
case 0x181:
|
|
case 0x243:
|
|
case 0x1e02:
|
|
case 0x1e04:
|
|
case 0x1e06:
|
|
regmbc('B');
|
|
regmbc(0x181); regmbc(0x243); regmbc(0x1e02);
|
|
regmbc(0x1e04); regmbc(0x1e06);
|
|
return;
|
|
case 'C':
|
|
case 0xc7:
|
|
case 0x106:
|
|
case 0x108:
|
|
case 0x10a:
|
|
case 0x10c:
|
|
case 0x187:
|
|
case 0x23b:
|
|
case 0x1e08:
|
|
case 0xa792:
|
|
regmbc('C'); regmbc(0xc7);
|
|
regmbc(0x106); regmbc(0x108); regmbc(0x10a);
|
|
regmbc(0x10c); regmbc(0x187); regmbc(0x23b);
|
|
regmbc(0x1e08); regmbc(0xa792);
|
|
return;
|
|
case 'D':
|
|
case 0x10e:
|
|
case 0x110:
|
|
case 0x18a:
|
|
case 0x1e0a:
|
|
case 0x1e0c:
|
|
case 0x1e0e:
|
|
case 0x1e10:
|
|
case 0x1e12:
|
|
regmbc('D'); regmbc(0x10e); regmbc(0x110);
|
|
regmbc(0x18a); regmbc(0x1e0a); regmbc(0x1e0c);
|
|
regmbc(0x1e0e); regmbc(0x1e10); regmbc(0x1e12);
|
|
return;
|
|
case 'E':
|
|
case 0xc8:
|
|
case 0xc9:
|
|
case 0xca:
|
|
case 0xcb:
|
|
case 0x112:
|
|
case 0x114:
|
|
case 0x116:
|
|
case 0x118:
|
|
case 0x11a:
|
|
case 0x204:
|
|
case 0x206:
|
|
case 0x228:
|
|
case 0x246:
|
|
case 0x1e14:
|
|
case 0x1e16:
|
|
case 0x1e18:
|
|
case 0x1e1a:
|
|
case 0x1e1c:
|
|
case 0x1eb8:
|
|
case 0x1eba:
|
|
case 0x1ebc:
|
|
case 0x1ebe:
|
|
case 0x1ec0:
|
|
case 0x1ec2:
|
|
case 0x1ec4:
|
|
case 0x1ec6:
|
|
regmbc('E'); regmbc(0xc8); regmbc(0xc9);
|
|
regmbc(0xca); regmbc(0xcb); regmbc(0x112);
|
|
regmbc(0x114); regmbc(0x116); regmbc(0x118);
|
|
regmbc(0x11a); regmbc(0x204); regmbc(0x206);
|
|
regmbc(0x228); regmbc(0x246); regmbc(0x1e14);
|
|
regmbc(0x1e16); regmbc(0x1e18); regmbc(0x1e1a);
|
|
regmbc(0x1e1c); regmbc(0x1eb8); regmbc(0x1eba);
|
|
regmbc(0x1ebc); regmbc(0x1ebe); regmbc(0x1ec0);
|
|
regmbc(0x1ec2); regmbc(0x1ec4); regmbc(0x1ec6);
|
|
return;
|
|
case 'F':
|
|
case 0x191:
|
|
case 0x1e1e:
|
|
case 0xa798:
|
|
regmbc('F'); regmbc(0x191); regmbc(0x1e1e);
|
|
regmbc(0xa798);
|
|
return;
|
|
case 'G':
|
|
case 0x11c:
|
|
case 0x11e:
|
|
case 0x120:
|
|
case 0x122:
|
|
case 0x193:
|
|
case 0x1e4:
|
|
case 0x1e6:
|
|
case 0x1f4:
|
|
case 0x1e20:
|
|
case 0xa7a0:
|
|
regmbc('G'); regmbc(0x11c); regmbc(0x11e);
|
|
regmbc(0x120); regmbc(0x122); regmbc(0x193);
|
|
regmbc(0x1e4); regmbc(0x1e6); regmbc(0x1f4);
|
|
regmbc(0x1e20); regmbc(0xa7a0);
|
|
return;
|
|
case 'H':
|
|
case 0x124:
|
|
case 0x126:
|
|
case 0x21e:
|
|
case 0x1e22:
|
|
case 0x1e24:
|
|
case 0x1e26:
|
|
case 0x1e28:
|
|
case 0x1e2a:
|
|
case 0x2c67:
|
|
regmbc('H'); regmbc(0x124); regmbc(0x126);
|
|
regmbc(0x21e); regmbc(0x1e22); regmbc(0x1e24);
|
|
regmbc(0x1e26); regmbc(0x1e28); regmbc(0x1e2a);
|
|
regmbc(0x2c67);
|
|
return;
|
|
case 'I':
|
|
case 0xcc:
|
|
case 0xcd:
|
|
case 0xce:
|
|
case 0xcf:
|
|
case 0x128:
|
|
case 0x12a:
|
|
case 0x12c:
|
|
case 0x12e:
|
|
case 0x130:
|
|
case 0x197:
|
|
case 0x1cf:
|
|
case 0x208:
|
|
case 0x20a:
|
|
case 0x1e2c:
|
|
case 0x1e2e:
|
|
case 0x1ec8:
|
|
case 0x1eca:
|
|
regmbc('I'); regmbc(0xcc); regmbc(0xcd);
|
|
regmbc(0xce); regmbc(0xcf); regmbc(0x128);
|
|
regmbc(0x12a); regmbc(0x12c); regmbc(0x12e);
|
|
regmbc(0x130); regmbc(0x197); regmbc(0x1cf);
|
|
regmbc(0x208); regmbc(0x20a); regmbc(0x1e2c);
|
|
regmbc(0x1e2e); regmbc(0x1ec8); regmbc(0x1eca);
|
|
return;
|
|
case 'J':
|
|
case 0x134:
|
|
case 0x248:
|
|
regmbc('J'); regmbc(0x134); regmbc(0x248);
|
|
return;
|
|
case 'K':
|
|
case 0x136:
|
|
case 0x198:
|
|
case 0x1e8:
|
|
case 0x1e30:
|
|
case 0x1e32:
|
|
case 0x1e34:
|
|
case 0x2c69:
|
|
case 0xa740:
|
|
regmbc('K'); regmbc(0x136); regmbc(0x198);
|
|
regmbc(0x1e8); regmbc(0x1e30); regmbc(0x1e32);
|
|
regmbc(0x1e34); regmbc(0x2c69); regmbc(0xa740);
|
|
return;
|
|
case 'L':
|
|
case 0x139:
|
|
case 0x13b:
|
|
case 0x13d:
|
|
case 0x13f:
|
|
case 0x141:
|
|
case 0x23d:
|
|
case 0x1e36:
|
|
case 0x1e38:
|
|
case 0x1e3a:
|
|
case 0x1e3c:
|
|
case 0x2c60:
|
|
regmbc('L'); regmbc(0x139); regmbc(0x13b);
|
|
regmbc(0x13d); regmbc(0x13f); regmbc(0x141);
|
|
regmbc(0x23d); regmbc(0x1e36); regmbc(0x1e38);
|
|
regmbc(0x1e3a); regmbc(0x1e3c); regmbc(0x2c60);
|
|
return;
|
|
case 'M':
|
|
case 0x1e3e:
|
|
case 0x1e40:
|
|
case 0x1e42:
|
|
regmbc('M'); regmbc(0x1e3e); regmbc(0x1e40);
|
|
regmbc(0x1e42);
|
|
return;
|
|
case 'N':
|
|
case 0xd1:
|
|
case 0x143:
|
|
case 0x145:
|
|
case 0x147:
|
|
case 0x1f8:
|
|
case 0x1e44:
|
|
case 0x1e46:
|
|
case 0x1e48:
|
|
case 0x1e4a:
|
|
case 0xa7a4:
|
|
regmbc('N'); regmbc(0xd1);
|
|
regmbc(0x143); regmbc(0x145); regmbc(0x147);
|
|
regmbc(0x1f8); regmbc(0x1e44); regmbc(0x1e46);
|
|
regmbc(0x1e48); regmbc(0x1e4a); regmbc(0xa7a4);
|
|
return;
|
|
case 'O':
|
|
case 0xd2:
|
|
case 0xd3:
|
|
case 0xd4:
|
|
case 0xd5:
|
|
case 0xd6:
|
|
case 0xd8:
|
|
case 0x14c:
|
|
case 0x14e:
|
|
case 0x150:
|
|
case 0x19f:
|
|
case 0x1a0:
|
|
case 0x1d1:
|
|
case 0x1ea:
|
|
case 0x1ec:
|
|
case 0x1fe:
|
|
case 0x20c:
|
|
case 0x20e:
|
|
case 0x22a:
|
|
case 0x22c:
|
|
case 0x22e:
|
|
case 0x230:
|
|
case 0x1e4c:
|
|
case 0x1e4e:
|
|
case 0x1e50:
|
|
case 0x1e52:
|
|
case 0x1ecc:
|
|
case 0x1ece:
|
|
case 0x1ed0:
|
|
case 0x1ed2:
|
|
case 0x1ed4:
|
|
case 0x1ed6:
|
|
case 0x1ed8:
|
|
case 0x1eda:
|
|
case 0x1edc:
|
|
case 0x1ede:
|
|
case 0x1ee0:
|
|
case 0x1ee2:
|
|
regmbc('O'); regmbc(0xd2); regmbc(0xd3); regmbc(0xd4);
|
|
regmbc(0xd5); regmbc(0xd6); regmbc(0xd8);
|
|
regmbc(0x14c); regmbc(0x14e); regmbc(0x150);
|
|
regmbc(0x19f); regmbc(0x1a0); regmbc(0x1d1);
|
|
regmbc(0x1ea); regmbc(0x1ec); regmbc(0x1fe);
|
|
regmbc(0x20c); regmbc(0x20e); regmbc(0x22a);
|
|
regmbc(0x22c); regmbc(0x22e); regmbc(0x230);
|
|
regmbc(0x1e4c); regmbc(0x1e4e); regmbc(0x1e50);
|
|
regmbc(0x1e52); regmbc(0x1ecc); regmbc(0x1ece);
|
|
regmbc(0x1ed0); regmbc(0x1ed2); regmbc(0x1ed4);
|
|
regmbc(0x1ed6); regmbc(0x1ed8); regmbc(0x1eda);
|
|
regmbc(0x1edc); regmbc(0x1ede); regmbc(0x1ee0);
|
|
regmbc(0x1ee2);
|
|
return;
|
|
case 'P':
|
|
case 0x1a4:
|
|
case 0x1e54:
|
|
case 0x1e56:
|
|
case 0x2c63:
|
|
regmbc('P'); regmbc(0x1a4); regmbc(0x1e54);
|
|
regmbc(0x1e56); regmbc(0x2c63);
|
|
return;
|
|
case 'Q':
|
|
case 0x24a:
|
|
regmbc('Q'); regmbc(0x24a);
|
|
return;
|
|
case 'R':
|
|
case 0x154:
|
|
case 0x156:
|
|
case 0x158:
|
|
case 0x210:
|
|
case 0x212:
|
|
case 0x24c:
|
|
case 0x1e58:
|
|
case 0x1e5a:
|
|
case 0x1e5c:
|
|
case 0x1e5e:
|
|
case 0x2c64:
|
|
case 0xa7a6:
|
|
regmbc('R'); regmbc(0x154); regmbc(0x156);
|
|
regmbc(0x210); regmbc(0x212); regmbc(0x158);
|
|
regmbc(0x24c); regmbc(0x1e58); regmbc(0x1e5a);
|
|
regmbc(0x1e5c); regmbc(0x1e5e); regmbc(0x2c64);
|
|
regmbc(0xa7a6);
|
|
return;
|
|
case 'S':
|
|
case 0x15a:
|
|
case 0x15c:
|
|
case 0x15e:
|
|
case 0x160:
|
|
case 0x218:
|
|
case 0x1e60:
|
|
case 0x1e62:
|
|
case 0x1e64:
|
|
case 0x1e66:
|
|
case 0x1e68:
|
|
case 0x2c7e:
|
|
case 0xa7a8:
|
|
regmbc('S'); regmbc(0x15a); regmbc(0x15c);
|
|
regmbc(0x15e); regmbc(0x160); regmbc(0x218);
|
|
regmbc(0x1e60); regmbc(0x1e62); regmbc(0x1e64);
|
|
regmbc(0x1e66); regmbc(0x1e68); regmbc(0x2c7e);
|
|
regmbc(0xa7a8);
|
|
return;
|
|
case 'T':
|
|
case 0x162:
|
|
case 0x164:
|
|
case 0x166:
|
|
case 0x1ac:
|
|
case 0x1ae:
|
|
case 0x21a:
|
|
case 0x23e:
|
|
case 0x1e6a:
|
|
case 0x1e6c:
|
|
case 0x1e6e:
|
|
case 0x1e70:
|
|
regmbc('T'); regmbc(0x162); regmbc(0x164);
|
|
regmbc(0x166); regmbc(0x1ac); regmbc(0x23e);
|
|
regmbc(0x1ae); regmbc(0x21a); regmbc(0x1e6a);
|
|
regmbc(0x1e6c); regmbc(0x1e6e); regmbc(0x1e70);
|
|
return;
|
|
case 'U':
|
|
case 0xd9:
|
|
case 0xda:
|
|
case 0xdb:
|
|
case 0xdc:
|
|
case 0x168:
|
|
case 0x16a:
|
|
case 0x16c:
|
|
case 0x16e:
|
|
case 0x170:
|
|
case 0x172:
|
|
case 0x1af:
|
|
case 0x1d3:
|
|
case 0x1d5:
|
|
case 0x1d7:
|
|
case 0x1d9:
|
|
case 0x1db:
|
|
case 0x214:
|
|
case 0x216:
|
|
case 0x244:
|
|
case 0x1e72:
|
|
case 0x1e74:
|
|
case 0x1e76:
|
|
case 0x1e78:
|
|
case 0x1e7a:
|
|
case 0x1ee4:
|
|
case 0x1ee6:
|
|
case 0x1ee8:
|
|
case 0x1eea:
|
|
case 0x1eec:
|
|
case 0x1eee:
|
|
case 0x1ef0:
|
|
regmbc('U'); regmbc(0xd9); regmbc(0xda);
|
|
regmbc(0xdb); regmbc(0xdc); regmbc(0x168);
|
|
regmbc(0x16a); regmbc(0x16c); regmbc(0x16e);
|
|
regmbc(0x170); regmbc(0x172); regmbc(0x1af);
|
|
regmbc(0x1d3); regmbc(0x1d5); regmbc(0x1d7);
|
|
regmbc(0x1d9); regmbc(0x1db); regmbc(0x214);
|
|
regmbc(0x216); regmbc(0x244); regmbc(0x1e72);
|
|
regmbc(0x1e74); regmbc(0x1e76); regmbc(0x1e78);
|
|
regmbc(0x1e7a); regmbc(0x1ee4); regmbc(0x1ee6);
|
|
regmbc(0x1ee8); regmbc(0x1eea); regmbc(0x1eec);
|
|
regmbc(0x1eee); regmbc(0x1ef0);
|
|
return;
|
|
case 'V':
|
|
case 0x1b2:
|
|
case 0x1e7c:
|
|
case 0x1e7e:
|
|
regmbc('V'); regmbc(0x1b2); regmbc(0x1e7c);
|
|
regmbc(0x1e7e);
|
|
return;
|
|
case 'W':
|
|
case 0x174:
|
|
case 0x1e80:
|
|
case 0x1e82:
|
|
case 0x1e84:
|
|
case 0x1e86:
|
|
case 0x1e88:
|
|
regmbc('W'); regmbc(0x174); regmbc(0x1e80);
|
|
regmbc(0x1e82); regmbc(0x1e84); regmbc(0x1e86);
|
|
regmbc(0x1e88);
|
|
return;
|
|
case 'X':
|
|
case 0x1e8a:
|
|
case 0x1e8c:
|
|
regmbc('X'); regmbc(0x1e8a); regmbc(0x1e8c);
|
|
return;
|
|
case 'Y':
|
|
case 0xdd:
|
|
case 0x176:
|
|
case 0x178:
|
|
case 0x1b3:
|
|
case 0x232:
|
|
case 0x24e:
|
|
case 0x1e8e:
|
|
case 0x1ef2:
|
|
case 0x1ef6:
|
|
case 0x1ef4:
|
|
case 0x1ef8:
|
|
regmbc('Y'); regmbc(0xdd); regmbc(0x176);
|
|
regmbc(0x178); regmbc(0x1b3); regmbc(0x232);
|
|
regmbc(0x24e); regmbc(0x1e8e); regmbc(0x1ef2);
|
|
regmbc(0x1ef4); regmbc(0x1ef6); regmbc(0x1ef8);
|
|
return;
|
|
case 'Z':
|
|
case 0x179:
|
|
case 0x17b:
|
|
case 0x17d:
|
|
case 0x1b5:
|
|
case 0x1e90:
|
|
case 0x1e92:
|
|
case 0x1e94:
|
|
case 0x2c6b:
|
|
regmbc('Z'); regmbc(0x179); regmbc(0x17b);
|
|
regmbc(0x17d); regmbc(0x1b5); regmbc(0x1e90);
|
|
regmbc(0x1e92); regmbc(0x1e94); regmbc(0x2c6b);
|
|
return;
|
|
case 'a':
|
|
case 0xe0:
|
|
case 0xe1:
|
|
case 0xe2:
|
|
case 0xe3:
|
|
case 0xe4:
|
|
case 0xe5:
|
|
case 0x101:
|
|
case 0x103:
|
|
case 0x105:
|
|
case 0x1ce:
|
|
case 0x1df:
|
|
case 0x1e1:
|
|
case 0x1fb:
|
|
case 0x201:
|
|
case 0x203:
|
|
case 0x227:
|
|
case 0x1d8f:
|
|
case 0x1e01:
|
|
case 0x1e9a:
|
|
case 0x1ea1:
|
|
case 0x1ea3:
|
|
case 0x1ea5:
|
|
case 0x1ea7:
|
|
case 0x1ea9:
|
|
case 0x1eab:
|
|
case 0x1ead:
|
|
case 0x1eaf:
|
|
case 0x1eb1:
|
|
case 0x1eb3:
|
|
case 0x1eb5:
|
|
case 0x1eb7:
|
|
case 0x2c65:
|
|
regmbc('a'); regmbc(0xe0); regmbc(0xe1);
|
|
regmbc(0xe2); regmbc(0xe3); regmbc(0xe4);
|
|
regmbc(0xe5); regmbc(0x101); regmbc(0x103);
|
|
regmbc(0x105); regmbc(0x1ce); regmbc(0x1df);
|
|
regmbc(0x1e1); regmbc(0x1fb); regmbc(0x201);
|
|
regmbc(0x203); regmbc(0x227); regmbc(0x1d8f);
|
|
regmbc(0x1e01); regmbc(0x1e9a); regmbc(0x1ea1);
|
|
regmbc(0x1ea3); regmbc(0x1ea5); regmbc(0x1ea7);
|
|
regmbc(0x1ea9); regmbc(0x1eab); regmbc(0x1ead);
|
|
regmbc(0x1eaf); regmbc(0x1eb1); regmbc(0x1eb3);
|
|
regmbc(0x1eb5); regmbc(0x1eb7); regmbc(0x2c65);
|
|
return;
|
|
case 'b':
|
|
case 0x180:
|
|
case 0x253:
|
|
case 0x1d6c:
|
|
case 0x1d80:
|
|
case 0x1e03:
|
|
case 0x1e05:
|
|
case 0x1e07:
|
|
regmbc('b');
|
|
regmbc(0x180); regmbc(0x253); regmbc(0x1d6c);
|
|
regmbc(0x1d80); regmbc(0x1e03); regmbc(0x1e05);
|
|
regmbc(0x1e07);
|
|
return;
|
|
case 'c':
|
|
case 0xe7:
|
|
case 0x107:
|
|
case 0x109:
|
|
case 0x10b:
|
|
case 0x10d:
|
|
case 0x188:
|
|
case 0x23c:
|
|
case 0x1e09:
|
|
case 0xa793:
|
|
case 0xa794:
|
|
regmbc('c'); regmbc(0xe7); regmbc(0x107);
|
|
regmbc(0x109); regmbc(0x10b); regmbc(0x10d);
|
|
regmbc(0x188); regmbc(0x23c); regmbc(0x1e09);
|
|
regmbc(0xa793); regmbc(0xa794);
|
|
return;
|
|
case 'd':
|
|
case 0x10f:
|
|
case 0x111:
|
|
case 0x257:
|
|
case 0x1d6d:
|
|
case 0x1d81:
|
|
case 0x1d91:
|
|
case 0x1e0b:
|
|
case 0x1e0d:
|
|
case 0x1e0f:
|
|
case 0x1e11:
|
|
case 0x1e13:
|
|
regmbc('d'); regmbc(0x10f); regmbc(0x111);
|
|
regmbc(0x257); regmbc(0x1d6d); regmbc(0x1d81);
|
|
regmbc(0x1d91); regmbc(0x1e0b); regmbc(0x1e0d);
|
|
regmbc(0x1e0f); regmbc(0x1e11); regmbc(0x1e13);
|
|
return;
|
|
case 'e':
|
|
case 0xe8:
|
|
case 0xe9:
|
|
case 0xea:
|
|
case 0xeb:
|
|
case 0x113:
|
|
case 0x115:
|
|
case 0x117:
|
|
case 0x119:
|
|
case 0x11b:
|
|
case 0x205:
|
|
case 0x207:
|
|
case 0x229:
|
|
case 0x247:
|
|
case 0x1d92:
|
|
case 0x1e15:
|
|
case 0x1e17:
|
|
case 0x1e19:
|
|
case 0x1e1b:
|
|
case 0x1eb9:
|
|
case 0x1ebb:
|
|
case 0x1e1d:
|
|
case 0x1ebd:
|
|
case 0x1ebf:
|
|
case 0x1ec1:
|
|
case 0x1ec3:
|
|
case 0x1ec5:
|
|
case 0x1ec7:
|
|
regmbc('e'); regmbc(0xe8); regmbc(0xe9);
|
|
regmbc(0xea); regmbc(0xeb); regmbc(0x113);
|
|
regmbc(0x115); regmbc(0x117); regmbc(0x119);
|
|
regmbc(0x11b); regmbc(0x205); regmbc(0x207);
|
|
regmbc(0x229); regmbc(0x247); regmbc(0x1d92);
|
|
regmbc(0x1e15); regmbc(0x1e17); regmbc(0x1e19);
|
|
regmbc(0x1e1b); regmbc(0x1e1d); regmbc(0x1eb9);
|
|
regmbc(0x1ebb); regmbc(0x1ebd); regmbc(0x1ebf);
|
|
regmbc(0x1ec1); regmbc(0x1ec3); regmbc(0x1ec5);
|
|
regmbc(0x1ec7);
|
|
return;
|
|
case 'f':
|
|
case 0x192:
|
|
case 0x1d6e:
|
|
case 0x1d82:
|
|
case 0x1e1f:
|
|
case 0xa799:
|
|
regmbc('f'); regmbc(0x192); regmbc(0x1d6e);
|
|
regmbc(0x1d82); regmbc(0x1e1f); regmbc(0xa799);
|
|
return;
|
|
case 'g':
|
|
case 0x11d:
|
|
case 0x11f:
|
|
case 0x121:
|
|
case 0x123:
|
|
case 0x1e5:
|
|
case 0x1e7:
|
|
case 0x260:
|
|
case 0x1f5:
|
|
case 0x1d83:
|
|
case 0x1e21:
|
|
case 0xa7a1:
|
|
regmbc('g'); regmbc(0x11d); regmbc(0x11f);
|
|
regmbc(0x121); regmbc(0x123); regmbc(0x1e5);
|
|
regmbc(0x1e7); regmbc(0x1f5); regmbc(0x260);
|
|
regmbc(0x1d83); regmbc(0x1e21); regmbc(0xa7a1);
|
|
return;
|
|
case 'h':
|
|
case 0x125:
|
|
case 0x127:
|
|
case 0x21f:
|
|
case 0x1e23:
|
|
case 0x1e25:
|
|
case 0x1e27:
|
|
case 0x1e29:
|
|
case 0x1e2b:
|
|
case 0x1e96:
|
|
case 0x2c68:
|
|
case 0xa795:
|
|
regmbc('h'); regmbc(0x125); regmbc(0x127);
|
|
regmbc(0x21f); regmbc(0x1e23); regmbc(0x1e25);
|
|
regmbc(0x1e27); regmbc(0x1e29); regmbc(0x1e2b);
|
|
regmbc(0x1e96); regmbc(0x2c68); regmbc(0xa795);
|
|
return;
|
|
case 'i':
|
|
case 0xec:
|
|
case 0xed:
|
|
case 0xee:
|
|
case 0xef:
|
|
case 0x129:
|
|
case 0x12b:
|
|
case 0x12d:
|
|
case 0x12f:
|
|
case 0x1d0:
|
|
case 0x209:
|
|
case 0x20b:
|
|
case 0x268:
|
|
case 0x1d96:
|
|
case 0x1e2d:
|
|
case 0x1e2f:
|
|
case 0x1ec9:
|
|
case 0x1ecb:
|
|
regmbc('i'); regmbc(0xec); regmbc(0xed);
|
|
regmbc(0xee); regmbc(0xef); regmbc(0x129);
|
|
regmbc(0x12b); regmbc(0x12d); regmbc(0x12f);
|
|
regmbc(0x1d0); regmbc(0x209); regmbc(0x20b);
|
|
regmbc(0x268); regmbc(0x1d96); regmbc(0x1e2d);
|
|
regmbc(0x1e2f); regmbc(0x1ec9); regmbc(0x1ecb);
|
|
return;
|
|
case 'j':
|
|
case 0x135:
|
|
case 0x1f0:
|
|
case 0x249:
|
|
regmbc('j'); regmbc(0x135); regmbc(0x1f0);
|
|
regmbc(0x249);
|
|
return;
|
|
case 'k':
|
|
case 0x137:
|
|
case 0x199:
|
|
case 0x1e9:
|
|
case 0x1d84:
|
|
case 0x1e31:
|
|
case 0x1e33:
|
|
case 0x1e35:
|
|
case 0x2c6a:
|
|
case 0xa741:
|
|
regmbc('k'); regmbc(0x137); regmbc(0x199);
|
|
regmbc(0x1e9); regmbc(0x1d84); regmbc(0x1e31);
|
|
regmbc(0x1e33); regmbc(0x1e35); regmbc(0x2c6a);
|
|
regmbc(0xa741);
|
|
return;
|
|
case 'l':
|
|
case 0x13a:
|
|
case 0x13c:
|
|
case 0x13e:
|
|
case 0x140:
|
|
case 0x142:
|
|
case 0x19a:
|
|
case 0x1e37:
|
|
case 0x1e39:
|
|
case 0x1e3b:
|
|
case 0x1e3d:
|
|
case 0x2c61:
|
|
regmbc('l'); regmbc(0x13a); regmbc(0x13c);
|
|
regmbc(0x13e); regmbc(0x140); regmbc(0x142);
|
|
regmbc(0x19a); regmbc(0x1e37); regmbc(0x1e39);
|
|
regmbc(0x1e3b); regmbc(0x1e3d); regmbc(0x2c61);
|
|
return;
|
|
case 'm':
|
|
case 0x1d6f:
|
|
case 0x1e3f:
|
|
case 0x1e41:
|
|
case 0x1e43:
|
|
regmbc('m'); regmbc(0x1d6f); regmbc(0x1e3f);
|
|
regmbc(0x1e41); regmbc(0x1e43);
|
|
return;
|
|
case 'n':
|
|
case 0xf1:
|
|
case 0x144:
|
|
case 0x146:
|
|
case 0x148:
|
|
case 0x149:
|
|
case 0x1f9:
|
|
case 0x1d70:
|
|
case 0x1d87:
|
|
case 0x1e45:
|
|
case 0x1e47:
|
|
case 0x1e49:
|
|
case 0x1e4b:
|
|
case 0xa7a5:
|
|
regmbc('n'); regmbc(0xf1); regmbc(0x144);
|
|
regmbc(0x146); regmbc(0x148); regmbc(0x149);
|
|
regmbc(0x1f9); regmbc(0x1d70); regmbc(0x1d87);
|
|
regmbc(0x1e45); regmbc(0x1e47); regmbc(0x1e49);
|
|
regmbc(0x1e4b); regmbc(0xa7a5);
|
|
return;
|
|
case 'o':
|
|
case 0xf2:
|
|
case 0xf3:
|
|
case 0xf4:
|
|
case 0xf5:
|
|
case 0xf6:
|
|
case 0xf8:
|
|
case 0x14d:
|
|
case 0x14f:
|
|
case 0x151:
|
|
case 0x1a1:
|
|
case 0x1d2:
|
|
case 0x1eb:
|
|
case 0x1ed:
|
|
case 0x1ff:
|
|
case 0x20d:
|
|
case 0x20f:
|
|
case 0x22b:
|
|
case 0x22d:
|
|
case 0x22f:
|
|
case 0x231:
|
|
case 0x275:
|
|
case 0x1e4d:
|
|
case 0x1e4f:
|
|
case 0x1e51:
|
|
case 0x1e53:
|
|
case 0x1ecd:
|
|
case 0x1ecf:
|
|
case 0x1ed1:
|
|
case 0x1ed3:
|
|
case 0x1ed5:
|
|
case 0x1ed7:
|
|
case 0x1ed9:
|
|
case 0x1edb:
|
|
case 0x1edd:
|
|
case 0x1edf:
|
|
case 0x1ee1:
|
|
case 0x1ee3:
|
|
regmbc('o'); regmbc(0xf2); regmbc(0xf3);
|
|
regmbc(0xf4); regmbc(0xf5); regmbc(0xf6);
|
|
regmbc(0xf8); regmbc(0x14d); regmbc(0x14f);
|
|
regmbc(0x151); regmbc(0x1a1); regmbc(0x1d2);
|
|
regmbc(0x1eb); regmbc(0x1ed); regmbc(0x1ff);
|
|
regmbc(0x20d); regmbc(0x20f); regmbc(0x22b);
|
|
regmbc(0x22d); regmbc(0x22f); regmbc(0x231);
|
|
regmbc(0x275); regmbc(0x1e4d); regmbc(0x1e4f);
|
|
regmbc(0x1e51); regmbc(0x1e53); regmbc(0x1ecd);
|
|
regmbc(0x1ecf); regmbc(0x1ed1); regmbc(0x1ed3);
|
|
regmbc(0x1ed5); regmbc(0x1ed7); regmbc(0x1ed9);
|
|
regmbc(0x1edb); regmbc(0x1edd); regmbc(0x1edf);
|
|
regmbc(0x1ee1); regmbc(0x1ee3);
|
|
return;
|
|
case 'p':
|
|
case 0x1a5:
|
|
case 0x1d71:
|
|
case 0x1d88:
|
|
case 0x1d7d:
|
|
case 0x1e55:
|
|
case 0x1e57:
|
|
regmbc('p'); regmbc(0x1a5); regmbc(0x1d71);
|
|
regmbc(0x1d7d); regmbc(0x1d88); regmbc(0x1e55);
|
|
regmbc(0x1e57);
|
|
return;
|
|
case 'q':
|
|
case 0x24b:
|
|
case 0x2a0:
|
|
regmbc('q'); regmbc(0x24b); regmbc(0x2a0);
|
|
return;
|
|
case 'r':
|
|
case 0x155:
|
|
case 0x157:
|
|
case 0x159:
|
|
case 0x211:
|
|
case 0x213:
|
|
case 0x24d:
|
|
case 0x27d:
|
|
case 0x1d72:
|
|
case 0x1d73:
|
|
case 0x1d89:
|
|
case 0x1e59:
|
|
case 0x1e5b:
|
|
case 0x1e5d:
|
|
case 0x1e5f:
|
|
case 0xa7a7:
|
|
regmbc('r'); regmbc(0x155); regmbc(0x157);
|
|
regmbc(0x159); regmbc(0x211); regmbc(0x213);
|
|
regmbc(0x24d); regmbc(0x1d72); regmbc(0x1d73);
|
|
regmbc(0x1d89); regmbc(0x1e59); regmbc(0x27d);
|
|
regmbc(0x1e5b); regmbc(0x1e5d); regmbc(0x1e5f);
|
|
regmbc(0xa7a7);
|
|
return;
|
|
case 's':
|
|
case 0x15b:
|
|
case 0x15d:
|
|
case 0x15f:
|
|
case 0x161:
|
|
case 0x1e61:
|
|
case 0x219:
|
|
case 0x23f:
|
|
case 0x1d74:
|
|
case 0x1d8a:
|
|
case 0x1e63:
|
|
case 0x1e65:
|
|
case 0x1e67:
|
|
case 0x1e69:
|
|
case 0xa7a9:
|
|
regmbc('s'); regmbc(0x15b); regmbc(0x15d);
|
|
regmbc(0x15f); regmbc(0x161); regmbc(0x23f);
|
|
regmbc(0x219); regmbc(0x1d74); regmbc(0x1d8a);
|
|
regmbc(0x1e61); regmbc(0x1e63); regmbc(0x1e65);
|
|
regmbc(0x1e67); regmbc(0x1e69); regmbc(0xa7a9);
|
|
return;
|
|
case 't':
|
|
case 0x163:
|
|
case 0x165:
|
|
case 0x167:
|
|
case 0x1ab:
|
|
case 0x1ad:
|
|
case 0x21b:
|
|
case 0x288:
|
|
case 0x1d75:
|
|
case 0x1e6b:
|
|
case 0x1e6d:
|
|
case 0x1e6f:
|
|
case 0x1e71:
|
|
case 0x1e97:
|
|
case 0x2c66:
|
|
regmbc('t'); regmbc(0x163); regmbc(0x165);
|
|
regmbc(0x167); regmbc(0x1ab); regmbc(0x21b);
|
|
regmbc(0x1ad); regmbc(0x288); regmbc(0x1d75);
|
|
regmbc(0x1e6b); regmbc(0x1e6d); regmbc(0x1e6f);
|
|
regmbc(0x1e71); regmbc(0x1e97); regmbc(0x2c66);
|
|
return;
|
|
case 'u':
|
|
case 0xf9:
|
|
case 0xfa:
|
|
case 0xfb:
|
|
case 0xfc:
|
|
case 0x169:
|
|
case 0x16b:
|
|
case 0x16d:
|
|
case 0x16f:
|
|
case 0x171:
|
|
case 0x173:
|
|
case 0x1b0:
|
|
case 0x1d4:
|
|
case 0x1d6:
|
|
case 0x1d8:
|
|
case 0x1da:
|
|
case 0x1dc:
|
|
case 0x215:
|
|
case 0x217:
|
|
case 0x289:
|
|
case 0x1e73:
|
|
case 0x1d7e:
|
|
case 0x1d99:
|
|
case 0x1e75:
|
|
case 0x1e77:
|
|
case 0x1e79:
|
|
case 0x1e7b:
|
|
case 0x1ee5:
|
|
case 0x1ee7:
|
|
case 0x1ee9:
|
|
case 0x1eeb:
|
|
case 0x1eed:
|
|
case 0x1eef:
|
|
case 0x1ef1:
|
|
regmbc('u'); regmbc(0xf9); regmbc(0xfa);
|
|
regmbc(0xfb); regmbc(0xfc); regmbc(0x169);
|
|
regmbc(0x16b); regmbc(0x16d); regmbc(0x16f);
|
|
regmbc(0x171); regmbc(0x173); regmbc(0x1d6);
|
|
regmbc(0x1d8); regmbc(0x1da); regmbc(0x1dc);
|
|
regmbc(0x215); regmbc(0x217); regmbc(0x1b0);
|
|
regmbc(0x1d4); regmbc(0x289); regmbc(0x1d7e);
|
|
regmbc(0x1d99); regmbc(0x1e73); regmbc(0x1e75);
|
|
regmbc(0x1e77); regmbc(0x1e79); regmbc(0x1e7b);
|
|
regmbc(0x1ee5); regmbc(0x1ee7); regmbc(0x1ee9);
|
|
regmbc(0x1eeb); regmbc(0x1eed); regmbc(0x1eef);
|
|
regmbc(0x1ef1);
|
|
return;
|
|
case 'v':
|
|
case 0x28b:
|
|
case 0x1d8c:
|
|
case 0x1e7d:
|
|
case 0x1e7f:
|
|
regmbc('v'); regmbc(0x28b); regmbc(0x1d8c);
|
|
regmbc(0x1e7d); regmbc(0x1e7f);
|
|
return;
|
|
case 'w':
|
|
case 0x175:
|
|
case 0x1e81:
|
|
case 0x1e83:
|
|
case 0x1e85:
|
|
case 0x1e87:
|
|
case 0x1e89:
|
|
case 0x1e98:
|
|
regmbc('w'); regmbc(0x175); regmbc(0x1e81);
|
|
regmbc(0x1e83); regmbc(0x1e85); regmbc(0x1e87);
|
|
regmbc(0x1e89); regmbc(0x1e98);
|
|
return;
|
|
case 'x':
|
|
case 0x1e8b:
|
|
case 0x1e8d:
|
|
regmbc('x'); regmbc(0x1e8b); regmbc(0x1e8d);
|
|
return;
|
|
case 'y':
|
|
case 0xfd:
|
|
case 0xff:
|
|
case 0x177:
|
|
case 0x1b4:
|
|
case 0x233:
|
|
case 0x24f:
|
|
case 0x1e8f:
|
|
case 0x1e99:
|
|
case 0x1ef3:
|
|
case 0x1ef5:
|
|
case 0x1ef7:
|
|
case 0x1ef9:
|
|
regmbc('y'); regmbc(0xfd); regmbc(0xff);
|
|
regmbc(0x177); regmbc(0x1b4); regmbc(0x233);
|
|
regmbc(0x24f); regmbc(0x1e8f); regmbc(0x1e99);
|
|
regmbc(0x1ef3); regmbc(0x1ef5); regmbc(0x1ef7);
|
|
regmbc(0x1ef9);
|
|
return;
|
|
case 'z':
|
|
case 0x17a:
|
|
case 0x17c:
|
|
case 0x17e:
|
|
case 0x1b6:
|
|
case 0x1d76:
|
|
case 0x1d8e:
|
|
case 0x1e91:
|
|
case 0x1e93:
|
|
case 0x1e95:
|
|
case 0x2c6c:
|
|
regmbc('z'); regmbc(0x17a); regmbc(0x17c);
|
|
regmbc(0x17e); regmbc(0x1b6); regmbc(0x1d76);
|
|
regmbc(0x1d8e); regmbc(0x1e91); regmbc(0x1e93);
|
|
regmbc(0x1e95); regmbc(0x2c6c);
|
|
return;
|
|
}
|
|
}
|
|
regmbc(c);
|
|
}
|
|
|
|
// Emit a node.
|
|
// Return pointer to generated code.
|
|
static uint8_t *regnode(int op)
|
|
{
|
|
uint8_t *ret;
|
|
|
|
ret = regcode;
|
|
if (ret == JUST_CALC_SIZE) {
|
|
regsize += 3;
|
|
} else {
|
|
*regcode++ = (uint8_t)op;
|
|
*regcode++ = NUL; // Null "next" pointer.
|
|
*regcode++ = NUL;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
// Write a four bytes number at "p" and return pointer to the next char.
|
|
static uint8_t *re_put_uint32(uint8_t *p, uint32_t val)
|
|
{
|
|
*p++ = (uint8_t)((val >> 24) & 0377);
|
|
*p++ = (uint8_t)((val >> 16) & 0377);
|
|
*p++ = (uint8_t)((val >> 8) & 0377);
|
|
*p++ = (uint8_t)(val & 0377);
|
|
return p;
|
|
}
|
|
|
|
// regnext - dig the "next" pointer out of a node
|
|
// Returns NULL when calculating size, when there is no next item and when
|
|
// there is an error.
|
|
static uint8_t *regnext(uint8_t *p)
|
|
FUNC_ATTR_NONNULL_ALL
|
|
{
|
|
int offset;
|
|
|
|
if (p == JUST_CALC_SIZE || reg_toolong) {
|
|
return NULL;
|
|
}
|
|
|
|
offset = NEXT(p);
|
|
if (offset == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
if (OP(p) == BACK) {
|
|
return p - offset;
|
|
} else {
|
|
return p + offset;
|
|
}
|
|
}
|
|
|
|
// Set the next-pointer at the end of a node chain.
|
|
static void regtail(uint8_t *p, uint8_t *val)
|
|
{
|
|
int offset;
|
|
|
|
if (p == JUST_CALC_SIZE) {
|
|
return;
|
|
}
|
|
|
|
// Find last node.
|
|
uint8_t *scan = p;
|
|
for (;;) {
|
|
uint8_t *temp = regnext(scan);
|
|
if (temp == NULL) {
|
|
break;
|
|
}
|
|
scan = temp;
|
|
}
|
|
|
|
if (OP(scan) == BACK) {
|
|
offset = (int)(scan - val);
|
|
} else {
|
|
offset = (int)(val - scan);
|
|
}
|
|
// When the offset uses more than 16 bits it can no longer fit in the two
|
|
// bytes available. Use a global flag to avoid having to check return
|
|
// values in too many places.
|
|
if (offset > 0xffff) {
|
|
reg_toolong = true;
|
|
} else {
|
|
*(scan + 1) = (uint8_t)(((unsigned)offset >> 8) & 0377);
|
|
*(scan + 2) = (uint8_t)(offset & 0377);
|
|
}
|
|
}
|
|
|
|
// Like regtail, on item after a BRANCH; nop if none.
|
|
static void regoptail(uint8_t *p, uint8_t *val)
|
|
{
|
|
// When op is neither BRANCH nor BRACE_COMPLEX0-9, it is "operandless"
|
|
if (p == NULL || p == JUST_CALC_SIZE
|
|
|| (OP(p) != BRANCH
|
|
&& (OP(p) < BRACE_COMPLEX || OP(p) > BRACE_COMPLEX + 9))) {
|
|
return;
|
|
}
|
|
regtail(OPERAND(p), val);
|
|
}
|
|
|
|
// Insert an operator in front of already-emitted operand
|
|
//
|
|
// Means relocating the operand.
|
|
static void reginsert(int op, uint8_t *opnd)
|
|
{
|
|
uint8_t *src;
|
|
uint8_t *dst;
|
|
uint8_t *place;
|
|
|
|
if (regcode == JUST_CALC_SIZE) {
|
|
regsize += 3;
|
|
return;
|
|
}
|
|
src = regcode;
|
|
regcode += 3;
|
|
dst = regcode;
|
|
while (src > opnd) {
|
|
*--dst = *--src;
|
|
}
|
|
|
|
place = opnd; // Op node, where operand used to be.
|
|
*place++ = (uint8_t)op;
|
|
*place++ = NUL;
|
|
*place = NUL;
|
|
}
|
|
|
|
// Insert an operator in front of already-emitted operand.
|
|
// Add a number to the operator.
|
|
static void reginsert_nr(int op, long val, uint8_t *opnd)
|
|
{
|
|
uint8_t *src;
|
|
uint8_t *dst;
|
|
uint8_t *place;
|
|
|
|
if (regcode == JUST_CALC_SIZE) {
|
|
regsize += 7;
|
|
return;
|
|
}
|
|
src = regcode;
|
|
regcode += 7;
|
|
dst = regcode;
|
|
while (src > opnd) {
|
|
*--dst = *--src;
|
|
}
|
|
|
|
place = opnd; // Op node, where operand used to be.
|
|
*place++ = (uint8_t)op;
|
|
*place++ = NUL;
|
|
*place++ = NUL;
|
|
assert(val >= 0 && (uintmax_t)val <= UINT32_MAX);
|
|
re_put_uint32(place, (uint32_t)val);
|
|
}
|
|
|
|
// Insert an operator in front of already-emitted operand.
|
|
// The operator has the given limit values as operands. Also set next pointer.
|
|
//
|
|
// Means relocating the operand.
|
|
static void reginsert_limits(int op, long minval, long maxval, uint8_t *opnd)
|
|
{
|
|
uint8_t *src;
|
|
uint8_t *dst;
|
|
uint8_t *place;
|
|
|
|
if (regcode == JUST_CALC_SIZE) {
|
|
regsize += 11;
|
|
return;
|
|
}
|
|
src = regcode;
|
|
regcode += 11;
|
|
dst = regcode;
|
|
while (src > opnd) {
|
|
*--dst = *--src;
|
|
}
|
|
|
|
place = opnd; // Op node, where operand used to be.
|
|
*place++ = (uint8_t)op;
|
|
*place++ = NUL;
|
|
*place++ = NUL;
|
|
assert(minval >= 0 && (uintmax_t)minval <= UINT32_MAX);
|
|
place = re_put_uint32(place, (uint32_t)minval);
|
|
assert(maxval >= 0 && (uintmax_t)maxval <= UINT32_MAX);
|
|
place = re_put_uint32(place, (uint32_t)maxval);
|
|
regtail(opnd, place);
|
|
}
|
|
|
|
/// Return true if the back reference is legal. We must have seen the close
|
|
/// brace.
|
|
/// TODO(vim): Should also check that we don't refer to something repeated
|
|
/// (+*=): what instance of the repetition should we match?
|
|
static int seen_endbrace(int refnum)
|
|
{
|
|
if (!had_endbrace[refnum]) {
|
|
uint8_t *p;
|
|
|
|
// Trick: check if "@<=" or "@<!" follows, in which case
|
|
// the \1 can appear before the referenced match.
|
|
for (p = (uint8_t *)regparse; *p != NUL; p++) {
|
|
if (p[0] == '@' && p[1] == '<' && (p[2] == '!' || p[2] == '=')) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (*p == NUL) {
|
|
emsg(_("E65: Illegal back reference"));
|
|
rc_did_emsg = true;
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// Parse the lowest level.
|
|
//
|
|
// Optimization: gobbles an entire sequence of ordinary characters so that
|
|
// it can turn them into a single node, which is smaller to store and
|
|
// faster to run. Don't do this when one_exactly is set.
|
|
static uint8_t *regatom(int *flagp)
|
|
{
|
|
uint8_t *ret;
|
|
int flags;
|
|
int c;
|
|
uint8_t *p;
|
|
int extra = 0;
|
|
int save_prev_at_start = prev_at_start;
|
|
|
|
*flagp = WORST; // Tentatively.
|
|
|
|
c = getchr();
|
|
switch (c) {
|
|
case Magic('^'):
|
|
ret = regnode(BOL);
|
|
break;
|
|
|
|
case Magic('$'):
|
|
ret = regnode(EOL);
|
|
had_eol = true;
|
|
break;
|
|
|
|
case Magic('<'):
|
|
ret = regnode(BOW);
|
|
break;
|
|
|
|
case Magic('>'):
|
|
ret = regnode(EOW);
|
|
break;
|
|
|
|
case Magic('_'):
|
|
c = no_Magic(getchr());
|
|
if (c == '^') { // "\_^" is start-of-line
|
|
ret = regnode(BOL);
|
|
break;
|
|
}
|
|
if (c == '$') { // "\_$" is end-of-line
|
|
ret = regnode(EOL);
|
|
had_eol = true;
|
|
break;
|
|
}
|
|
|
|
extra = ADD_NL;
|
|
*flagp |= HASNL;
|
|
|
|
// "\_[" is character range plus newline
|
|
if (c == '[') {
|
|
goto collection;
|
|
}
|
|
|
|
// "\_x" is character class plus newline
|
|
FALLTHROUGH;
|
|
|
|
// Character classes.
|
|
case Magic('.'):
|
|
case Magic('i'):
|
|
case Magic('I'):
|
|
case Magic('k'):
|
|
case Magic('K'):
|
|
case Magic('f'):
|
|
case Magic('F'):
|
|
case Magic('p'):
|
|
case Magic('P'):
|
|
case Magic('s'):
|
|
case Magic('S'):
|
|
case Magic('d'):
|
|
case Magic('D'):
|
|
case Magic('x'):
|
|
case Magic('X'):
|
|
case Magic('o'):
|
|
case Magic('O'):
|
|
case Magic('w'):
|
|
case Magic('W'):
|
|
case Magic('h'):
|
|
case Magic('H'):
|
|
case Magic('a'):
|
|
case Magic('A'):
|
|
case Magic('l'):
|
|
case Magic('L'):
|
|
case Magic('u'):
|
|
case Magic('U'):
|
|
p = (uint8_t *)vim_strchr((char *)classchars, no_Magic(c));
|
|
if (p == NULL) {
|
|
EMSG_RET_NULL(_("E63: invalid use of \\_"));
|
|
}
|
|
// When '.' is followed by a composing char ignore the dot, so that
|
|
// the composing char is matched here.
|
|
if (c == Magic('.') && utf_iscomposing(peekchr())) {
|
|
c = getchr();
|
|
goto do_multibyte;
|
|
}
|
|
ret = regnode(classcodes[p - classchars] + extra);
|
|
*flagp |= HASWIDTH | SIMPLE;
|
|
break;
|
|
|
|
case Magic('n'):
|
|
if (reg_string) {
|
|
// In a string "\n" matches a newline character.
|
|
ret = regnode(EXACTLY);
|
|
regc(NL);
|
|
regc(NUL);
|
|
*flagp |= HASWIDTH | SIMPLE;
|
|
} else {
|
|
// In buffer text "\n" matches the end of a line.
|
|
ret = regnode(NEWL);
|
|
*flagp |= HASWIDTH | HASNL;
|
|
}
|
|
break;
|
|
|
|
case Magic('('):
|
|
if (one_exactly) {
|
|
EMSG_ONE_RET_NULL;
|
|
}
|
|
ret = reg(REG_PAREN, &flags);
|
|
if (ret == NULL) {
|
|
return NULL;
|
|
}
|
|
*flagp |= flags & (HASWIDTH | SPSTART | HASNL | HASLOOKBH);
|
|
break;
|
|
|
|
case NUL:
|
|
case Magic('|'):
|
|
case Magic('&'):
|
|
case Magic(')'):
|
|
if (one_exactly) {
|
|
EMSG_ONE_RET_NULL;
|
|
}
|
|
IEMSG_RET_NULL(_(e_internal)); // Supposed to be caught earlier.
|
|
// NOTREACHED
|
|
|
|
case Magic('='):
|
|
case Magic('?'):
|
|
case Magic('+'):
|
|
case Magic('@'):
|
|
case Magic('{'):
|
|
case Magic('*'):
|
|
c = no_Magic(c);
|
|
EMSG3_RET_NULL(_("E64: %s%c follows nothing"),
|
|
(c == '*' ? reg_magic >= MAGIC_ON : reg_magic == MAGIC_ALL), c);
|
|
// NOTREACHED
|
|
|
|
case Magic('~'): // previous substitute pattern
|
|
if (reg_prev_sub != NULL) {
|
|
uint8_t *lp;
|
|
|
|
ret = regnode(EXACTLY);
|
|
lp = (uint8_t *)reg_prev_sub;
|
|
while (*lp != NUL) {
|
|
regc(*lp++);
|
|
}
|
|
regc(NUL);
|
|
if (*reg_prev_sub != NUL) {
|
|
*flagp |= HASWIDTH;
|
|
if ((lp - (uint8_t *)reg_prev_sub) == 1) {
|
|
*flagp |= SIMPLE;
|
|
}
|
|
}
|
|
} else {
|
|
EMSG_RET_NULL(_(e_nopresub));
|
|
}
|
|
break;
|
|
|
|
case Magic('1'):
|
|
case Magic('2'):
|
|
case Magic('3'):
|
|
case Magic('4'):
|
|
case Magic('5'):
|
|
case Magic('6'):
|
|
case Magic('7'):
|
|
case Magic('8'):
|
|
case Magic('9'): {
|
|
int refnum;
|
|
|
|
refnum = c - Magic('0');
|
|
if (!seen_endbrace(refnum)) {
|
|
return NULL;
|
|
}
|
|
ret = regnode(BACKREF + refnum);
|
|
}
|
|
break;
|
|
|
|
case Magic('z'):
|
|
c = no_Magic(getchr());
|
|
switch (c) {
|
|
case '(':
|
|
if ((reg_do_extmatch & REX_SET) == 0) {
|
|
EMSG_RET_NULL(_(e_z_not_allowed));
|
|
}
|
|
if (one_exactly) {
|
|
EMSG_ONE_RET_NULL;
|
|
}
|
|
ret = reg(REG_ZPAREN, &flags);
|
|
if (ret == NULL) {
|
|
return NULL;
|
|
}
|
|
*flagp |= flags & (HASWIDTH|SPSTART|HASNL|HASLOOKBH);
|
|
re_has_z = REX_SET;
|
|
break;
|
|
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
if ((reg_do_extmatch & REX_USE) == 0) {
|
|
EMSG_RET_NULL(_(e_z1_not_allowed));
|
|
}
|
|
ret = regnode(ZREF + c - '0');
|
|
re_has_z = REX_USE;
|
|
break;
|
|
|
|
case 's':
|
|
ret = regnode(MOPEN + 0);
|
|
if (!re_mult_next("\\zs")) {
|
|
return NULL;
|
|
}
|
|
break;
|
|
|
|
case 'e':
|
|
ret = regnode(MCLOSE + 0);
|
|
if (!re_mult_next("\\ze")) {
|
|
return NULL;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
EMSG_RET_NULL(_("E68: Invalid character after \\z"));
|
|
}
|
|
break;
|
|
|
|
case Magic('%'):
|
|
c = no_Magic(getchr());
|
|
switch (c) {
|
|
// () without a back reference
|
|
case '(':
|
|
if (one_exactly) {
|
|
EMSG_ONE_RET_NULL;
|
|
}
|
|
ret = reg(REG_NPAREN, &flags);
|
|
if (ret == NULL) {
|
|
return NULL;
|
|
}
|
|
*flagp |= flags & (HASWIDTH | SPSTART | HASNL | HASLOOKBH);
|
|
break;
|
|
|
|
// Catch \%^ and \%$ regardless of where they appear in the
|
|
// pattern -- regardless of whether or not it makes sense.
|
|
case '^':
|
|
ret = regnode(RE_BOF);
|
|
break;
|
|
|
|
case '$':
|
|
ret = regnode(RE_EOF);
|
|
break;
|
|
|
|
case '#':
|
|
if (regparse[0] == '=' && regparse[1] >= 48 && regparse[1] <= 50) {
|
|
// misplaced \%#=1
|
|
semsg(_(e_atom_engine_must_be_at_start_of_pattern), regparse[1]);
|
|
return FAIL;
|
|
}
|
|
ret = regnode(CURSOR);
|
|
break;
|
|
|
|
case 'V':
|
|
ret = regnode(RE_VISUAL);
|
|
break;
|
|
|
|
case 'C':
|
|
ret = regnode(RE_COMPOSING);
|
|
break;
|
|
|
|
// \%[abc]: Emit as a list of branches, all ending at the last
|
|
// branch which matches nothing.
|
|
case '[':
|
|
if (one_exactly) { // doesn't nest
|
|
EMSG_ONE_RET_NULL;
|
|
}
|
|
{
|
|
uint8_t *lastbranch;
|
|
uint8_t *lastnode = NULL;
|
|
uint8_t *br;
|
|
|
|
ret = NULL;
|
|
while ((c = getchr()) != ']') {
|
|
if (c == NUL) {
|
|
EMSG2_RET_NULL(_(e_missing_sb),
|
|
reg_magic == MAGIC_ALL);
|
|
}
|
|
br = regnode(BRANCH);
|
|
if (ret == NULL) {
|
|
ret = br;
|
|
} else {
|
|
regtail(lastnode, br);
|
|
if (reg_toolong) {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
ungetchr();
|
|
one_exactly = true;
|
|
lastnode = regatom(flagp);
|
|
one_exactly = false;
|
|
if (lastnode == NULL) {
|
|
return NULL;
|
|
}
|
|
}
|
|
if (ret == NULL) {
|
|
EMSG2_RET_NULL(_(e_empty_sb),
|
|
reg_magic == MAGIC_ALL);
|
|
}
|
|
lastbranch = regnode(BRANCH);
|
|
br = regnode(NOTHING);
|
|
if (ret != JUST_CALC_SIZE) {
|
|
regtail(lastnode, br);
|
|
regtail(lastbranch, br);
|
|
// connect all branches to the NOTHING
|
|
// branch at the end
|
|
for (br = ret; br != lastnode;) {
|
|
if (OP(br) == BRANCH) {
|
|
regtail(br, lastbranch);
|
|
if (reg_toolong) {
|
|
return NULL;
|
|
}
|
|
br = OPERAND(br);
|
|
} else {
|
|
br = regnext(br);
|
|
}
|
|
}
|
|
}
|
|
*flagp &= ~(HASWIDTH | SIMPLE);
|
|
break;
|
|
}
|
|
|
|
case 'd': // %d123 decimal
|
|
case 'o': // %o123 octal
|
|
case 'x': // %xab hex 2
|
|
case 'u': // %uabcd hex 4
|
|
case 'U': // %U1234abcd hex 8
|
|
{
|
|
int64_t i;
|
|
|
|
switch (c) {
|
|
case 'd':
|
|
i = getdecchrs(); break;
|
|
case 'o':
|
|
i = getoctchrs(); break;
|
|
case 'x':
|
|
i = gethexchrs(2); break;
|
|
case 'u':
|
|
i = gethexchrs(4); break;
|
|
case 'U':
|
|
i = gethexchrs(8); break;
|
|
default:
|
|
i = -1; break;
|
|
}
|
|
|
|
if (i < 0 || i > INT_MAX) {
|
|
EMSG2_RET_NULL(_("E678: Invalid character after %s%%[dxouU]"),
|
|
reg_magic == MAGIC_ALL);
|
|
}
|
|
if (use_multibytecode((int)i)) {
|
|
ret = regnode(MULTIBYTECODE);
|
|
} else {
|
|
ret = regnode(EXACTLY);
|
|
}
|
|
if (i == 0) {
|
|
regc(0x0a);
|
|
} else {
|
|
regmbc((int)i);
|
|
}
|
|
regc(NUL);
|
|
*flagp |= HASWIDTH;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
if (ascii_isdigit(c) || c == '<' || c == '>' || c == '\'' || c == '.') {
|
|
uint32_t n = 0;
|
|
int cmp;
|
|
bool cur = false;
|
|
bool got_digit = false;
|
|
|
|
cmp = c;
|
|
if (cmp == '<' || cmp == '>') {
|
|
c = getchr();
|
|
}
|
|
if (no_Magic(c) == '.') {
|
|
cur = true;
|
|
c = getchr();
|
|
}
|
|
while (ascii_isdigit(c)) {
|
|
got_digit = true;
|
|
n = n * 10 + (uint32_t)(c - '0');
|
|
c = getchr();
|
|
}
|
|
if (c == '\'' && n == 0) {
|
|
// "\%'m", "\%<'m" and "\%>'m": Mark
|
|
c = getchr();
|
|
ret = regnode(RE_MARK);
|
|
if (ret == JUST_CALC_SIZE) {
|
|
regsize += 2;
|
|
} else {
|
|
*regcode++ = (uint8_t)c;
|
|
*regcode++ = (uint8_t)cmp;
|
|
}
|
|
break;
|
|
} else if ((c == 'l' || c == 'c' || c == 'v') && (cur || got_digit)) {
|
|
if (cur && n) {
|
|
semsg(_(e_regexp_number_after_dot_pos_search_chr), no_Magic(c));
|
|
rc_did_emsg = true;
|
|
return NULL;
|
|
}
|
|
if (c == 'l') {
|
|
if (cur) {
|
|
n = (uint32_t)curwin->w_cursor.lnum;
|
|
}
|
|
ret = regnode(RE_LNUM);
|
|
if (save_prev_at_start) {
|
|
at_start = true;
|
|
}
|
|
} else if (c == 'c') {
|
|
if (cur) {
|
|
n = (uint32_t)curwin->w_cursor.col;
|
|
n++;
|
|
}
|
|
ret = regnode(RE_COL);
|
|
} else {
|
|
if (cur) {
|
|
colnr_T vcol = 0;
|
|
getvvcol(curwin, &curwin->w_cursor, NULL, NULL, &vcol);
|
|
n = (uint32_t)(++vcol);
|
|
}
|
|
ret = regnode(RE_VCOL);
|
|
}
|
|
if (ret == JUST_CALC_SIZE) {
|
|
regsize += 5;
|
|
} else {
|
|
// put the number and the optional
|
|
// comparator after the opcode
|
|
regcode = re_put_uint32(regcode, n);
|
|
*regcode++ = (uint8_t)cmp;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
EMSG2_RET_NULL(_("E71: Invalid character after %s%%"),
|
|
reg_magic == MAGIC_ALL);
|
|
}
|
|
break;
|
|
|
|
case Magic('['):
|
|
collection:
|
|
{
|
|
uint8_t *lp;
|
|
|
|
// If there is no matching ']', we assume the '[' is a normal
|
|
// character. This makes 'incsearch' and ":help [" work.
|
|
lp = (uint8_t *)skip_anyof(regparse);
|
|
if (*lp == ']') { // there is a matching ']'
|
|
int startc = -1; // > 0 when next '-' is a range
|
|
int endc;
|
|
|
|
// In a character class, different parsing rules apply.
|
|
// Not even \ is special anymore, nothing is.
|
|
if (*regparse == '^') { // Complement of range.
|
|
ret = regnode(ANYBUT + extra);
|
|
regparse++;
|
|
} else {
|
|
ret = regnode(ANYOF + extra);
|
|
}
|
|
|
|
// At the start ']' and '-' mean the literal character.
|
|
if (*regparse == ']' || *regparse == '-') {
|
|
startc = *regparse;
|
|
regc(*regparse++);
|
|
}
|
|
|
|
while (*regparse != NUL && *regparse != ']') {
|
|
if (*regparse == '-') {
|
|
regparse++;
|
|
// The '-' is not used for a range at the end and
|
|
// after or before a '\n'.
|
|
if (*regparse == ']' || *regparse == NUL
|
|
|| startc == -1
|
|
|| (regparse[0] == '\\' && regparse[1] == 'n')) {
|
|
regc('-');
|
|
startc = '-'; // [--x] is a range
|
|
} else {
|
|
// Also accept "a-[.z.]"
|
|
endc = 0;
|
|
if (*regparse == '[') {
|
|
endc = get_coll_element(®parse);
|
|
}
|
|
if (endc == 0) {
|
|
endc = mb_ptr2char_adv((const char **)®parse);
|
|
}
|
|
|
|
// Handle \o40, \x20 and \u20AC style sequences
|
|
if (endc == '\\' && !reg_cpo_lit) {
|
|
endc = coll_get_char();
|
|
}
|
|
|
|
if (startc > endc) {
|
|
EMSG_RET_NULL(_(e_reverse_range));
|
|
}
|
|
if (utf_char2len(startc) > 1
|
|
|| utf_char2len(endc) > 1) {
|
|
// Limit to a range of 256 chars
|
|
if (endc > startc + 256) {
|
|
EMSG_RET_NULL(_(e_large_class));
|
|
}
|
|
while (++startc <= endc) {
|
|
regmbc(startc);
|
|
}
|
|
} else {
|
|
while (++startc <= endc) {
|
|
regc(startc);
|
|
}
|
|
}
|
|
startc = -1;
|
|
}
|
|
}
|
|
// Only "\]", "\^", "\]" and "\\" are special in Vi. Vim
|
|
// accepts "\t", "\e", etc., but only when the 'l' flag in
|
|
// 'cpoptions' is not included.
|
|
else if (*regparse == '\\'
|
|
&& (vim_strchr(REGEXP_INRANGE, (uint8_t)regparse[1]) != NULL
|
|
|| (!reg_cpo_lit
|
|
&& vim_strchr(REGEXP_ABBR,
|
|
(uint8_t)regparse[1]) != NULL))) {
|
|
regparse++;
|
|
if (*regparse == 'n') {
|
|
// '\n' in range: also match NL
|
|
if (ret != JUST_CALC_SIZE) {
|
|
// Using \n inside [^] does not change what
|
|
// matches. "[^\n]" is the same as ".".
|
|
if (*ret == ANYOF) {
|
|
*ret = ANYOF + ADD_NL;
|
|
*flagp |= HASNL;
|
|
}
|
|
// else: must have had a \n already
|
|
}
|
|
regparse++;
|
|
startc = -1;
|
|
} else if (*regparse == 'd'
|
|
|| *regparse == 'o'
|
|
|| *regparse == 'x'
|
|
|| *regparse == 'u'
|
|
|| *regparse == 'U') {
|
|
startc = coll_get_char();
|
|
if (startc == 0) {
|
|
regc(0x0a);
|
|
} else {
|
|
regmbc(startc);
|
|
}
|
|
} else {
|
|
startc = backslash_trans(*regparse++);
|
|
regc(startc);
|
|
}
|
|
} else if (*regparse == '[') {
|
|
int c_class;
|
|
int cu;
|
|
|
|
c_class = get_char_class(®parse);
|
|
startc = -1;
|
|
// Characters assumed to be 8 bits!
|
|
switch (c_class) {
|
|
case CLASS_NONE:
|
|
c_class = get_equi_class(®parse);
|
|
if (c_class != 0) {
|
|
// produce equivalence class
|
|
reg_equi_class(c_class);
|
|
} else if ((c_class = get_coll_element(®parse)) != 0) {
|
|
// produce a collating element
|
|
regmbc(c_class);
|
|
} else {
|
|
// literal '[', allow [[-x] as a range
|
|
startc = *regparse++;
|
|
regc(startc);
|
|
}
|
|
break;
|
|
case CLASS_ALNUM:
|
|
for (cu = 1; cu < 128; cu++) {
|
|
if (isalnum(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_ALPHA:
|
|
for (cu = 1; cu < 128; cu++) {
|
|
if (isalpha(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_BLANK:
|
|
regc(' ');
|
|
regc('\t');
|
|
break;
|
|
case CLASS_CNTRL:
|
|
for (cu = 1; cu <= 127; cu++) {
|
|
if (iscntrl(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_DIGIT:
|
|
for (cu = 1; cu <= 127; cu++) {
|
|
if (ascii_isdigit(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_GRAPH:
|
|
for (cu = 1; cu <= 127; cu++) {
|
|
if (isgraph(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_LOWER:
|
|
for (cu = 1; cu <= 255; cu++) {
|
|
if (mb_islower(cu) && cu != 170 && cu != 186) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_PRINT:
|
|
for (cu = 1; cu <= 255; cu++) {
|
|
if (vim_isprintc(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_PUNCT:
|
|
for (cu = 1; cu < 128; cu++) {
|
|
if (ispunct(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_SPACE:
|
|
for (cu = 9; cu <= 13; cu++) {
|
|
regc(cu);
|
|
}
|
|
regc(' ');
|
|
break;
|
|
case CLASS_UPPER:
|
|
for (cu = 1; cu <= 255; cu++) {
|
|
if (mb_isupper(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_XDIGIT:
|
|
for (cu = 1; cu <= 255; cu++) {
|
|
if (ascii_isxdigit(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_TAB:
|
|
regc('\t');
|
|
break;
|
|
case CLASS_RETURN:
|
|
regc('\r');
|
|
break;
|
|
case CLASS_BACKSPACE:
|
|
regc('\b');
|
|
break;
|
|
case CLASS_ESCAPE:
|
|
regc(ESC);
|
|
break;
|
|
case CLASS_IDENT:
|
|
for (cu = 1; cu <= 255; cu++) {
|
|
if (vim_isIDc(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_KEYWORD:
|
|
for (cu = 1; cu <= 255; cu++) {
|
|
if (reg_iswordc(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
case CLASS_FNAME:
|
|
for (cu = 1; cu <= 255; cu++) {
|
|
if (vim_isfilec(cu)) {
|
|
regmbc(cu);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
} else {
|
|
// produce a multibyte character, including any
|
|
// following composing characters.
|
|
startc = utf_ptr2char((char *)regparse);
|
|
int len = utfc_ptr2len((char *)regparse);
|
|
if (utf_char2len(startc) != len) {
|
|
// composing chars
|
|
startc = -1;
|
|
}
|
|
while (--len >= 0) {
|
|
regc(*regparse++);
|
|
}
|
|
}
|
|
}
|
|
regc(NUL);
|
|
prevchr_len = 1; // last char was the ']'
|
|
if (*regparse != ']') {
|
|
EMSG_RET_NULL(_(e_toomsbra)); // Cannot happen?
|
|
}
|
|
skipchr(); // let's be friends with the lexer again
|
|
*flagp |= HASWIDTH | SIMPLE;
|
|
break;
|
|
} else if (reg_strict) {
|
|
EMSG2_RET_NULL(_(e_missingbracket), reg_magic > MAGIC_OFF);
|
|
}
|
|
}
|
|
FALLTHROUGH;
|
|
|
|
default: {
|
|
int len;
|
|
|
|
// A multi-byte character is handled as a separate atom if it's
|
|
// before a multi and when it's a composing char.
|
|
if (use_multibytecode(c)) {
|
|
do_multibyte:
|
|
ret = regnode(MULTIBYTECODE);
|
|
regmbc(c);
|
|
*flagp |= HASWIDTH | SIMPLE;
|
|
break;
|
|
}
|
|
|
|
ret = regnode(EXACTLY);
|
|
|
|
// Append characters as long as:
|
|
// - there is no following multi, we then need the character in
|
|
// front of it as a single character operand
|
|
// - not running into a Magic character
|
|
// - "one_exactly" is not set
|
|
// But always emit at least one character. Might be a Multi,
|
|
// e.g., a "[" without matching "]".
|
|
for (len = 0; c != NUL && (len == 0
|
|
|| (re_multi_type(peekchr()) == NOT_MULTI
|
|
&& !one_exactly
|
|
&& !is_Magic(c))); len++) {
|
|
c = no_Magic(c);
|
|
{
|
|
regmbc(c);
|
|
{
|
|
int l;
|
|
|
|
// Need to get composing character too.
|
|
for (;;) {
|
|
l = utf_ptr2len((char *)regparse);
|
|
if (!utf_composinglike(regparse, regparse + l)) {
|
|
break;
|
|
}
|
|
regmbc(utf_ptr2char((char *)regparse));
|
|
skipchr();
|
|
}
|
|
}
|
|
}
|
|
c = getchr();
|
|
}
|
|
ungetchr();
|
|
|
|
regc(NUL);
|
|
*flagp |= HASWIDTH;
|
|
if (len == 1) {
|
|
*flagp |= SIMPLE;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
// Parse something followed by possible [*+=].
|
|
//
|
|
// Note that the branching code sequences used for = and the general cases
|
|
// of * and + are somewhat optimized: they use the same NOTHING node as
|
|
// both the endmarker for their branch list and the body of the last branch.
|
|
// It might seem that this node could be dispensed with entirely, but the
|
|
// endmarker role is not redundant.
|
|
static uint8_t *regpiece(int *flagp)
|
|
{
|
|
uint8_t *ret;
|
|
int op;
|
|
uint8_t *next;
|
|
int flags;
|
|
long minval;
|
|
long maxval;
|
|
|
|
ret = regatom(&flags);
|
|
if (ret == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
op = peekchr();
|
|
if (re_multi_type(op) == NOT_MULTI) {
|
|
*flagp = flags;
|
|
return ret;
|
|
}
|
|
// default flags
|
|
*flagp = (WORST | SPSTART | (flags & (HASNL | HASLOOKBH)));
|
|
|
|
skipchr();
|
|
switch (op) {
|
|
case Magic('*'):
|
|
if (flags & SIMPLE) {
|
|
reginsert(STAR, ret);
|
|
} else {
|
|
// Emit x* as (x&|), where & means "self".
|
|
reginsert(BRANCH, ret); // Either x
|
|
regoptail(ret, regnode(BACK)); // and loop
|
|
regoptail(ret, ret); // back
|
|
regtail(ret, regnode(BRANCH)); // or
|
|
regtail(ret, regnode(NOTHING)); // null.
|
|
}
|
|
break;
|
|
|
|
case Magic('+'):
|
|
if (flags & SIMPLE) {
|
|
reginsert(PLUS, ret);
|
|
} else {
|
|
// Emit x+ as x(&|), where & means "self".
|
|
next = regnode(BRANCH); // Either
|
|
regtail(ret, next);
|
|
regtail(regnode(BACK), ret); // loop back
|
|
regtail(next, regnode(BRANCH)); // or
|
|
regtail(ret, regnode(NOTHING)); // null.
|
|
}
|
|
*flagp = (WORST | HASWIDTH | (flags & (HASNL | HASLOOKBH)));
|
|
break;
|
|
|
|
case Magic('@'): {
|
|
int lop = END;
|
|
int64_t nr = getdecchrs();
|
|
|
|
switch (no_Magic(getchr())) {
|
|
case '=':
|
|
lop = MATCH; break; // \@=
|
|
case '!':
|
|
lop = NOMATCH; break; // \@!
|
|
case '>':
|
|
lop = SUBPAT; break; // \@>
|
|
case '<':
|
|
switch (no_Magic(getchr())) {
|
|
case '=':
|
|
lop = BEHIND; break; // \@<=
|
|
case '!':
|
|
lop = NOBEHIND; break; // \@<!
|
|
}
|
|
}
|
|
if (lop == END) {
|
|
EMSG2_RET_NULL(_("E59: invalid character after %s@"),
|
|
reg_magic == MAGIC_ALL);
|
|
}
|
|
// Look behind must match with behind_pos.
|
|
if (lop == BEHIND || lop == NOBEHIND) {
|
|
regtail(ret, regnode(BHPOS));
|
|
*flagp |= HASLOOKBH;
|
|
}
|
|
regtail(ret, regnode(END)); // operand ends
|
|
if (lop == BEHIND || lop == NOBEHIND) {
|
|
if (nr < 0) {
|
|
nr = 0; // no limit is same as zero limit
|
|
}
|
|
reginsert_nr(lop, (uint32_t)nr, ret);
|
|
} else {
|
|
reginsert(lop, ret);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case Magic('?'):
|
|
case Magic('='):
|
|
// Emit x= as (x|)
|
|
reginsert(BRANCH, ret); // Either x
|
|
regtail(ret, regnode(BRANCH)); // or
|
|
next = regnode(NOTHING); // null.
|
|
regtail(ret, next);
|
|
regoptail(ret, next);
|
|
break;
|
|
|
|
case Magic('{'):
|
|
if (!read_limits(&minval, &maxval)) {
|
|
return NULL;
|
|
}
|
|
if (flags & SIMPLE) {
|
|
reginsert(BRACE_SIMPLE, ret);
|
|
reginsert_limits(BRACE_LIMITS, minval, maxval, ret);
|
|
} else {
|
|
if (num_complex_braces >= 10) {
|
|
EMSG2_RET_NULL(_("E60: Too many complex %s{...}s"),
|
|
reg_magic == MAGIC_ALL);
|
|
}
|
|
reginsert(BRACE_COMPLEX + num_complex_braces, ret);
|
|
regoptail(ret, regnode(BACK));
|
|
regoptail(ret, ret);
|
|
reginsert_limits(BRACE_LIMITS, minval, maxval, ret);
|
|
num_complex_braces++;
|
|
}
|
|
if (minval > 0 && maxval > 0) {
|
|
*flagp = (HASWIDTH | (flags & (HASNL | HASLOOKBH)));
|
|
}
|
|
break;
|
|
}
|
|
if (re_multi_type(peekchr()) != NOT_MULTI) {
|
|
// Can't have a multi follow a multi.
|
|
if (peekchr() == Magic('*')) {
|
|
EMSG2_RET_NULL(_("E61: Nested %s*"), reg_magic >= MAGIC_ON);
|
|
}
|
|
EMSG3_RET_NULL(_("E62: Nested %s%c"), reg_magic == MAGIC_ALL, no_Magic(peekchr()));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
// Parse one alternative of an | or & operator.
|
|
// Implements the concatenation operator.
|
|
static uint8_t *regconcat(int *flagp)
|
|
{
|
|
uint8_t *first = NULL;
|
|
uint8_t *chain = NULL;
|
|
uint8_t *latest;
|
|
int flags;
|
|
int cont = true;
|
|
|
|
*flagp = WORST; // Tentatively.
|
|
|
|
while (cont) {
|
|
switch (peekchr()) {
|
|
case NUL:
|
|
case Magic('|'):
|
|
case Magic('&'):
|
|
case Magic(')'):
|
|
cont = false;
|
|
break;
|
|
case Magic('Z'):
|
|
regflags |= RF_ICOMBINE;
|
|
skipchr_keepstart();
|
|
break;
|
|
case Magic('c'):
|
|
regflags |= RF_ICASE;
|
|
skipchr_keepstart();
|
|
break;
|
|
case Magic('C'):
|
|
regflags |= RF_NOICASE;
|
|
skipchr_keepstart();
|
|
break;
|
|
case Magic('v'):
|
|
reg_magic = MAGIC_ALL;
|
|
skipchr_keepstart();
|
|
curchr = -1;
|
|
break;
|
|
case Magic('m'):
|
|
reg_magic = MAGIC_ON;
|
|
skipchr_keepstart();
|
|
curchr = -1;
|
|
break;
|
|
case Magic('M'):
|
|
reg_magic = MAGIC_OFF;
|
|
skipchr_keepstart();
|
|
curchr = -1;
|
|
break;
|
|
case Magic('V'):
|
|
reg_magic = MAGIC_NONE;
|
|
skipchr_keepstart();
|
|
curchr = -1;
|
|
break;
|
|
default:
|
|
latest = regpiece(&flags);
|
|
if (latest == NULL || reg_toolong) {
|
|
return NULL;
|
|
}
|
|
*flagp |= flags & (HASWIDTH | HASNL | HASLOOKBH);
|
|
if (chain == NULL) { // First piece.
|
|
*flagp |= flags & SPSTART;
|
|
} else {
|
|
regtail(chain, latest);
|
|
}
|
|
chain = latest;
|
|
if (first == NULL) {
|
|
first = latest;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (first == NULL) { // Loop ran zero times.
|
|
first = regnode(NOTHING);
|
|
}
|
|
return first;
|
|
}
|
|
|
|
// Parse one alternative of an | operator.
|
|
// Implements the & operator.
|
|
static uint8_t *regbranch(int *flagp)
|
|
{
|
|
uint8_t *ret;
|
|
uint8_t *chain = NULL;
|
|
uint8_t *latest;
|
|
int flags;
|
|
|
|
*flagp = WORST | HASNL; // Tentatively.
|
|
|
|
ret = regnode(BRANCH);
|
|
for (;;) {
|
|
latest = regconcat(&flags);
|
|
if (latest == NULL) {
|
|
return NULL;
|
|
}
|
|
// If one of the branches has width, the whole thing has. If one of
|
|
// the branches anchors at start-of-line, the whole thing does.
|
|
// If one of the branches uses look-behind, the whole thing does.
|
|
*flagp |= flags & (HASWIDTH | SPSTART | HASLOOKBH);
|
|
// If one of the branches doesn't match a line-break, the whole thing
|
|
// doesn't.
|
|
*flagp &= ~HASNL | (flags & HASNL);
|
|
if (chain != NULL) {
|
|
regtail(chain, latest);
|
|
}
|
|
if (peekchr() != Magic('&')) {
|
|
break;
|
|
}
|
|
skipchr();
|
|
regtail(latest, regnode(END)); // operand ends
|
|
if (reg_toolong) {
|
|
break;
|
|
}
|
|
reginsert(MATCH, latest);
|
|
chain = latest;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/// Parse regular expression, i.e. main body or parenthesized thing.
|
|
///
|
|
/// Caller must absorb opening parenthesis.
|
|
///
|
|
/// Combining parenthesis handling with the base level of regular expression
|
|
/// is a trifle forced, but the need to tie the tails of the branches to what
|
|
/// follows makes it hard to avoid.
|
|
///
|
|
/// @param paren REG_NOPAREN, REG_PAREN, REG_NPAREN or REG_ZPAREN
|
|
static uint8_t *reg(int paren, int *flagp)
|
|
{
|
|
uint8_t *ret;
|
|
uint8_t *br;
|
|
uint8_t *ender;
|
|
int parno = 0;
|
|
int flags;
|
|
|
|
*flagp = HASWIDTH; // Tentatively.
|
|
|
|
if (paren == REG_ZPAREN) {
|
|
// Make a ZOPEN node.
|
|
if (regnzpar >= NSUBEXP) {
|
|
EMSG_RET_NULL(_("E50: Too many \\z("));
|
|
}
|
|
parno = regnzpar;
|
|
regnzpar++;
|
|
ret = regnode(ZOPEN + parno);
|
|
} else if (paren == REG_PAREN) {
|
|
// Make a MOPEN node.
|
|
if (regnpar >= NSUBEXP) {
|
|
EMSG2_RET_NULL(_("E51: Too many %s("), reg_magic == MAGIC_ALL);
|
|
}
|
|
parno = regnpar;
|
|
regnpar++;
|
|
ret = regnode(MOPEN + parno);
|
|
} else if (paren == REG_NPAREN) {
|
|
// Make a NOPEN node.
|
|
ret = regnode(NOPEN);
|
|
} else {
|
|
ret = NULL;
|
|
}
|
|
|
|
// Pick up the branches, linking them together.
|
|
br = regbranch(&flags);
|
|
if (br == NULL) {
|
|
return NULL;
|
|
}
|
|
if (ret != NULL) {
|
|
regtail(ret, br); // [MZ]OPEN -> first.
|
|
} else {
|
|
ret = br;
|
|
}
|
|
// If one of the branches can be zero-width, the whole thing can.
|
|
// If one of the branches has * at start or matches a line-break, the
|
|
// whole thing can.
|
|
if (!(flags & HASWIDTH)) {
|
|
*flagp &= ~HASWIDTH;
|
|
}
|
|
*flagp |= flags & (SPSTART | HASNL | HASLOOKBH);
|
|
while (peekchr() == Magic('|')) {
|
|
skipchr();
|
|
br = regbranch(&flags);
|
|
if (br == NULL || reg_toolong) {
|
|
return NULL;
|
|
}
|
|
regtail(ret, br); // BRANCH -> BRANCH.
|
|
if (!(flags & HASWIDTH)) {
|
|
*flagp &= ~HASWIDTH;
|
|
}
|
|
*flagp |= flags & (SPSTART | HASNL | HASLOOKBH);
|
|
}
|
|
|
|
// Make a closing node, and hook it on the end.
|
|
ender = regnode(paren == REG_ZPAREN ? ZCLOSE + parno :
|
|
paren == REG_PAREN ? MCLOSE + parno :
|
|
paren == REG_NPAREN ? NCLOSE : END);
|
|
regtail(ret, ender);
|
|
|
|
// Hook the tails of the branches to the closing node.
|
|
for (br = ret; br != NULL; br = regnext(br)) {
|
|
regoptail(br, ender);
|
|
}
|
|
|
|
// Check for proper termination.
|
|
if (paren != REG_NOPAREN && getchr() != Magic(')')) {
|
|
if (paren == REG_ZPAREN) {
|
|
EMSG_RET_NULL(_("E52: Unmatched \\z("));
|
|
} else if (paren == REG_NPAREN) {
|
|
EMSG2_RET_NULL(_(e_unmatchedpp), reg_magic == MAGIC_ALL);
|
|
} else {
|
|
EMSG2_RET_NULL(_(e_unmatchedp), reg_magic == MAGIC_ALL);
|
|
}
|
|
} else if (paren == REG_NOPAREN && peekchr() != NUL) {
|
|
if (curchr == Magic(')')) {
|
|
EMSG2_RET_NULL(_(e_unmatchedpar), reg_magic == MAGIC_ALL);
|
|
} else {
|
|
EMSG_RET_NULL(_(e_trailing)); // "Can't happen".
|
|
}
|
|
// NOTREACHED
|
|
}
|
|
// Here we set the flag allowing back references to this set of
|
|
// parentheses.
|
|
if (paren == REG_PAREN) {
|
|
had_endbrace[parno] = true; // have seen the close paren
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
// bt_regcomp() - compile a regular expression into internal code for the
|
|
// traditional back track matcher.
|
|
// Returns the program in allocated space. Returns NULL for an error.
|
|
//
|
|
// We can't allocate space until we know how big the compiled form will be,
|
|
// but we can't compile it (and thus know how big it is) until we've got a
|
|
// place to put the code. So we cheat: we compile it twice, once with code
|
|
// generation turned off and size counting turned on, and once "for real".
|
|
// This also means that we don't allocate space until we are sure that the
|
|
// thing really will compile successfully, and we never have to move the
|
|
// code and thus invalidate pointers into it. (Note that it has to be in
|
|
// one piece because free() must be able to free it all.)
|
|
//
|
|
// Whether upper/lower case is to be ignored is decided when executing the
|
|
// program, it does not matter here.
|
|
//
|
|
// Beware that the optimization-preparation code in here knows about some
|
|
// of the structure of the compiled regexp.
|
|
// "re_flags": RE_MAGIC and/or RE_STRING.
|
|
static regprog_T *bt_regcomp(uint8_t *expr, int re_flags)
|
|
{
|
|
uint8_t *scan;
|
|
uint8_t *longest;
|
|
int len;
|
|
int flags;
|
|
|
|
if (expr == NULL) {
|
|
IEMSG_RET_NULL(_(e_null));
|
|
}
|
|
|
|
init_class_tab();
|
|
|
|
// First pass: determine size, legality.
|
|
regcomp_start(expr, re_flags);
|
|
regcode = JUST_CALC_SIZE;
|
|
regc(REGMAGIC);
|
|
if (reg(REG_NOPAREN, &flags) == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
// Allocate space.
|
|
bt_regprog_T *r = xmalloc(offsetof(bt_regprog_T, program) + (size_t)regsize);
|
|
r->re_in_use = false;
|
|
|
|
// Second pass: emit code.
|
|
regcomp_start(expr, re_flags);
|
|
regcode = r->program;
|
|
regc(REGMAGIC);
|
|
if (reg(REG_NOPAREN, &flags) == NULL || reg_toolong) {
|
|
xfree(r);
|
|
if (reg_toolong) {
|
|
EMSG_RET_NULL(_("E339: Pattern too long"));
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
// Dig out information for optimizations.
|
|
r->regstart = NUL; // Worst-case defaults.
|
|
r->reganch = 0;
|
|
r->regmust = NULL;
|
|
r->regmlen = 0;
|
|
r->regflags = regflags;
|
|
if (flags & HASNL) {
|
|
r->regflags |= RF_HASNL;
|
|
}
|
|
if (flags & HASLOOKBH) {
|
|
r->regflags |= RF_LOOKBH;
|
|
}
|
|
// Remember whether this pattern has any \z specials in it.
|
|
r->reghasz = (uint8_t)re_has_z;
|
|
scan = r->program + 1; // First BRANCH.
|
|
if (OP(regnext(scan)) == END) { // Only one top-level choice.
|
|
scan = OPERAND(scan);
|
|
|
|
// Starting-point info.
|
|
if (OP(scan) == BOL || OP(scan) == RE_BOF) {
|
|
r->reganch++;
|
|
scan = regnext(scan);
|
|
}
|
|
|
|
if (OP(scan) == EXACTLY) {
|
|
r->regstart = utf_ptr2char((char *)OPERAND(scan));
|
|
} else if (OP(scan) == BOW
|
|
|| OP(scan) == EOW
|
|
|| OP(scan) == NOTHING
|
|
|| OP(scan) == MOPEN + 0 || OP(scan) == NOPEN
|
|
|| OP(scan) == MCLOSE + 0 || OP(scan) == NCLOSE) {
|
|
uint8_t *regnext_scan = regnext(scan);
|
|
if (OP(regnext_scan) == EXACTLY) {
|
|
r->regstart = utf_ptr2char((char *)OPERAND(regnext_scan));
|
|
}
|
|
}
|
|
|
|
// If there's something expensive in the r.e., find the longest
|
|
// literal string that must appear and make it the regmust. Resolve
|
|
// ties in favor of later strings, since the regstart check works
|
|
// with the beginning of the r.e. and avoiding duplication
|
|
// strengthens checking. Not a strong reason, but sufficient in the
|
|
// absence of others.
|
|
|
|
// When the r.e. starts with BOW, it is faster to look for a regmust
|
|
// first. Used a lot for "#" and "*" commands. (Added by mool).
|
|
if ((flags & SPSTART || OP(scan) == BOW || OP(scan) == EOW)
|
|
&& !(flags & HASNL)) {
|
|
longest = NULL;
|
|
len = 0;
|
|
for (; scan != NULL; scan = regnext(scan)) {
|
|
if (OP(scan) == EXACTLY && strlen((char *)OPERAND(scan)) >= (size_t)len) {
|
|
longest = OPERAND(scan);
|
|
len = (int)strlen((char *)OPERAND(scan));
|
|
}
|
|
}
|
|
r->regmust = longest;
|
|
r->regmlen = len;
|
|
}
|
|
}
|
|
#ifdef BT_REGEXP_DUMP
|
|
regdump(expr, r);
|
|
#endif
|
|
r->engine = &bt_regengine;
|
|
return (regprog_T *)r;
|
|
}
|
|
|
|
// Check if during the previous call to vim_regcomp the EOL item "$" has been
|
|
// found. This is messy, but it works fine.
|
|
int vim_regcomp_had_eol(void)
|
|
{
|
|
return had_eol;
|
|
}
|
|
|
|
// Get a number after a backslash that is inside [].
|
|
// When nothing is recognized return a backslash.
|
|
static int coll_get_char(void)
|
|
{
|
|
int64_t nr = -1;
|
|
|
|
switch (*regparse++) {
|
|
case 'd':
|
|
nr = getdecchrs(); break;
|
|
case 'o':
|
|
nr = getoctchrs(); break;
|
|
case 'x':
|
|
nr = gethexchrs(2); break;
|
|
case 'u':
|
|
nr = gethexchrs(4); break;
|
|
case 'U':
|
|
nr = gethexchrs(8); break;
|
|
}
|
|
if (nr < 0 || nr > INT_MAX) {
|
|
// If getting the number fails be backwards compatible: the character
|
|
// is a backslash.
|
|
regparse--;
|
|
nr = '\\';
|
|
}
|
|
return (int)nr;
|
|
}
|
|
|
|
// Free a compiled regexp program, returned by bt_regcomp().
|
|
static void bt_regfree(regprog_T *prog)
|
|
{
|
|
xfree(prog);
|
|
}
|
|
|
|
#define ADVANCE_REGINPUT() MB_PTR_ADV(rex.input)
|
|
|
|
// The arguments from BRACE_LIMITS are stored here. They are actually local
|
|
// to regmatch(), but they are here to reduce the amount of stack space used
|
|
// (it can be called recursively many times).
|
|
static long bl_minval;
|
|
static long bl_maxval;
|
|
|
|
// Save the input line and position in a regsave_T.
|
|
static void reg_save(regsave_T *save, garray_T *gap)
|
|
FUNC_ATTR_NONNULL_ALL
|
|
{
|
|
if (REG_MULTI) {
|
|
save->rs_u.pos.col = (colnr_T)(rex.input - rex.line);
|
|
save->rs_u.pos.lnum = rex.lnum;
|
|
} else {
|
|
save->rs_u.ptr = rex.input;
|
|
}
|
|
save->rs_len = gap->ga_len;
|
|
}
|
|
|
|
// Restore the input line and position from a regsave_T.
|
|
static void reg_restore(regsave_T *save, garray_T *gap)
|
|
FUNC_ATTR_NONNULL_ALL
|
|
{
|
|
if (REG_MULTI) {
|
|
if (rex.lnum != save->rs_u.pos.lnum) {
|
|
// only call reg_getline() when the line number changed to save
|
|
// a bit of time
|
|
rex.lnum = save->rs_u.pos.lnum;
|
|
rex.line = (uint8_t *)reg_getline(rex.lnum);
|
|
}
|
|
rex.input = rex.line + save->rs_u.pos.col;
|
|
} else {
|
|
rex.input = save->rs_u.ptr;
|
|
}
|
|
gap->ga_len = save->rs_len;
|
|
}
|
|
|
|
// Return true if current position is equal to saved position.
|
|
static bool reg_save_equal(const regsave_T *save)
|
|
FUNC_ATTR_NONNULL_ALL
|
|
{
|
|
if (REG_MULTI) {
|
|
return rex.lnum == save->rs_u.pos.lnum
|
|
&& rex.input == rex.line + save->rs_u.pos.col;
|
|
}
|
|
return rex.input == save->rs_u.ptr;
|
|
}
|
|
|
|
// Save the sub-expressions before attempting a match.
|
|
#define save_se(savep, posp, pp) \
|
|
REG_MULTI ? save_se_multi((savep), (posp)) : save_se_one((savep), (pp))
|
|
|
|
// After a failed match restore the sub-expressions.
|
|
#define restore_se(savep, posp, pp) { \
|
|
if (REG_MULTI) /* NOLINT(readability/braces) */ \
|
|
*(posp) = (savep)->se_u.pos; \
|
|
else /* NOLINT */ \
|
|
*(pp) = (savep)->se_u.ptr; }
|
|
|
|
// Tentatively set the sub-expression start to the current position (after
|
|
// calling regmatch() they will have changed). Need to save the existing
|
|
// values for when there is no match.
|
|
// Use se_save() to use pointer (save_se_multi()) or position (save_se_one()),
|
|
// depending on REG_MULTI.
|
|
static void save_se_multi(save_se_T *savep, lpos_T *posp)
|
|
{
|
|
savep->se_u.pos = *posp;
|
|
posp->lnum = rex.lnum;
|
|
posp->col = (colnr_T)(rex.input - rex.line);
|
|
}
|
|
|
|
static void save_se_one(save_se_T *savep, uint8_t **pp)
|
|
{
|
|
savep->se_u.ptr = *pp;
|
|
*pp = rex.input;
|
|
}
|
|
|
|
/// regrepeat - repeatedly match something simple, return how many.
|
|
/// Advances rex.input (and rex.lnum) to just after the matched chars.
|
|
///
|
|
/// @param maxcount maximum number of matches allowed
|
|
static int regrepeat(uint8_t *p, long maxcount)
|
|
{
|
|
long count = 0;
|
|
uint8_t *opnd;
|
|
int mask;
|
|
int testval = 0;
|
|
|
|
uint8_t *scan = rex.input; // Make local copy of rex.input for speed.
|
|
opnd = OPERAND(p);
|
|
switch (OP(p)) {
|
|
case ANY:
|
|
case ANY + ADD_NL:
|
|
while (count < maxcount) {
|
|
// Matching anything means we continue until end-of-line (or
|
|
// end-of-file for ANY + ADD_NL), only limited by maxcount.
|
|
while (*scan != NUL && count < maxcount) {
|
|
count++;
|
|
MB_PTR_ADV(scan);
|
|
}
|
|
if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline
|
|
|| rex.reg_line_lbr || count == maxcount) {
|
|
break;
|
|
}
|
|
count++; // count the line-break
|
|
reg_nextline();
|
|
scan = rex.input;
|
|
if (got_int) {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case IDENT:
|
|
case IDENT + ADD_NL:
|
|
testval = 1;
|
|
FALLTHROUGH;
|
|
case SIDENT:
|
|
case SIDENT + ADD_NL:
|
|
while (count < maxcount) {
|
|
if (vim_isIDc(utf_ptr2char((char *)scan)) && (testval || !ascii_isdigit(*scan))) {
|
|
MB_PTR_ADV(scan);
|
|
} else if (*scan == NUL) {
|
|
if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline
|
|
|| rex.reg_line_lbr) {
|
|
break;
|
|
}
|
|
reg_nextline();
|
|
scan = rex.input;
|
|
if (got_int) {
|
|
break;
|
|
}
|
|
} else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) {
|
|
scan++;
|
|
} else {
|
|
break;
|
|
}
|
|
count++;
|
|
}
|
|
break;
|
|
|
|
case KWORD:
|
|
case KWORD + ADD_NL:
|
|
testval = 1;
|
|
FALLTHROUGH;
|
|
case SKWORD:
|
|
case SKWORD + ADD_NL:
|
|
while (count < maxcount) {
|
|
if (vim_iswordp_buf((char *)scan, rex.reg_buf)
|
|
&& (testval || !ascii_isdigit(*scan))) {
|
|
MB_PTR_ADV(scan);
|
|
} else if (*scan == NUL) {
|
|
if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline
|
|
|| rex.reg_line_lbr) {
|
|
break;
|
|
}
|
|
reg_nextline();
|
|
scan = rex.input;
|
|
if (got_int) {
|
|
break;
|
|
}
|
|
} else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) {
|
|
scan++;
|
|
} else {
|
|
break;
|
|
}
|
|
count++;
|
|
}
|
|
break;
|
|
|
|
case FNAME:
|
|
case FNAME + ADD_NL:
|
|
testval = 1;
|
|
FALLTHROUGH;
|
|
case SFNAME:
|
|
case SFNAME + ADD_NL:
|
|
while (count < maxcount) {
|
|
if (vim_isfilec(utf_ptr2char((char *)scan)) && (testval || !ascii_isdigit(*scan))) {
|
|
MB_PTR_ADV(scan);
|
|
} else if (*scan == NUL) {
|
|
if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline
|
|
|| rex.reg_line_lbr) {
|
|
break;
|
|
}
|
|
reg_nextline();
|
|
scan = rex.input;
|
|
if (got_int) {
|
|
break;
|
|
}
|
|
} else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) {
|
|
scan++;
|
|
} else {
|
|
break;
|
|
}
|
|
count++;
|
|
}
|
|
break;
|
|
|
|
case PRINT:
|
|
case PRINT + ADD_NL:
|
|
testval = 1;
|
|
FALLTHROUGH;
|
|
case SPRINT:
|
|
case SPRINT + ADD_NL:
|
|
while (count < maxcount) {
|
|
if (*scan == NUL) {
|
|
if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline
|
|
|| rex.reg_line_lbr) {
|
|
break;
|
|
}
|
|
reg_nextline();
|
|
scan = rex.input;
|
|
if (got_int) {
|
|
break;
|
|
}
|
|
} else if (vim_isprintc(utf_ptr2char((char *)scan)) == 1
|
|
&& (testval || !ascii_isdigit(*scan))) {
|
|
MB_PTR_ADV(scan);
|
|
} else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) {
|
|
scan++;
|
|
} else {
|
|
break;
|
|
}
|
|
count++;
|
|
}
|
|
break;
|
|
|
|
case WHITE:
|
|
case WHITE + ADD_NL:
|
|
testval = mask = RI_WHITE;
|
|
do_class:
|
|
while (count < maxcount) {
|
|
int l;
|
|
if (*scan == NUL) {
|
|
if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline
|
|
|| rex.reg_line_lbr) {
|
|
break;
|
|
}
|
|
reg_nextline();
|
|
scan = rex.input;
|
|
if (got_int) {
|
|
break;
|
|
}
|
|
} else if ((l = utfc_ptr2len((char *)scan)) > 1) {
|
|
if (testval != 0) {
|
|
break;
|
|
}
|
|
scan += l;
|
|
} else if ((class_tab[*scan] & mask) == testval) {
|
|
scan++;
|
|
} else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) {
|
|
scan++;
|
|
} else {
|
|
break;
|
|
}
|
|
count++;
|
|
}
|
|
break;
|
|
|
|
case NWHITE:
|
|
case NWHITE + ADD_NL:
|
|
mask = RI_WHITE;
|
|
goto do_class;
|
|
case DIGIT:
|
|
case DIGIT + ADD_NL:
|
|
testval = mask = RI_DIGIT;
|
|
goto do_class;
|
|
case NDIGIT:
|
|
case NDIGIT + ADD_NL:
|
|
mask = RI_DIGIT;
|
|
goto do_class;
|
|
case HEX:
|
|
case HEX + ADD_NL:
|
|
testval = mask = RI_HEX;
|
|
goto do_class;
|
|
case NHEX:
|
|
case NHEX + ADD_NL:
|
|
mask = RI_HEX;
|
|
goto do_class;
|
|
case OCTAL:
|
|
case OCTAL + ADD_NL:
|
|
testval = mask = RI_OCTAL;
|
|
goto do_class;
|
|
case NOCTAL:
|
|
case NOCTAL + ADD_NL:
|
|
mask = RI_OCTAL;
|
|
goto do_class;
|
|
case WORD:
|
|
case WORD + ADD_NL:
|
|
testval = mask = RI_WORD;
|
|
goto do_class;
|
|
case NWORD:
|
|
case NWORD + ADD_NL:
|
|
mask = RI_WORD;
|
|
goto do_class;
|
|
case HEAD:
|
|
case HEAD + ADD_NL:
|
|
testval = mask = RI_HEAD;
|
|
goto do_class;
|
|
case NHEAD:
|
|
case NHEAD + ADD_NL:
|
|
mask = RI_HEAD;
|
|
goto do_class;
|
|
case ALPHA:
|
|
case ALPHA + ADD_NL:
|
|
testval = mask = RI_ALPHA;
|
|
goto do_class;
|
|
case NALPHA:
|
|
case NALPHA + ADD_NL:
|
|
mask = RI_ALPHA;
|
|
goto do_class;
|
|
case LOWER:
|
|
case LOWER + ADD_NL:
|
|
testval = mask = RI_LOWER;
|
|
goto do_class;
|
|
case NLOWER:
|
|
case NLOWER + ADD_NL:
|
|
mask = RI_LOWER;
|
|
goto do_class;
|
|
case UPPER:
|
|
case UPPER + ADD_NL:
|
|
testval = mask = RI_UPPER;
|
|
goto do_class;
|
|
case NUPPER:
|
|
case NUPPER + ADD_NL:
|
|
mask = RI_UPPER;
|
|
goto do_class;
|
|
|
|
case EXACTLY: {
|
|
int cu, cl;
|
|
|
|
// This doesn't do a multi-byte character, because a MULTIBYTECODE
|
|
// would have been used for it. It does handle single-byte
|
|
// characters, such as latin1.
|
|
if (rex.reg_ic) {
|
|
cu = mb_toupper(*opnd);
|
|
cl = mb_tolower(*opnd);
|
|
while (count < maxcount && (*scan == cu || *scan == cl)) {
|
|
count++;
|
|
scan++;
|
|
}
|
|
} else {
|
|
cu = *opnd;
|
|
while (count < maxcount && *scan == cu) {
|
|
count++;
|
|
scan++;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
case MULTIBYTECODE: {
|
|
int i, len, cf = 0;
|
|
|
|
// Safety check (just in case 'encoding' was changed since
|
|
// compiling the program).
|
|
if ((len = utfc_ptr2len((char *)opnd)) > 1) {
|
|
if (rex.reg_ic) {
|
|
cf = utf_fold(utf_ptr2char((char *)opnd));
|
|
}
|
|
while (count < maxcount && utfc_ptr2len((char *)scan) >= len) {
|
|
for (i = 0; i < len; i++) {
|
|
if (opnd[i] != scan[i]) {
|
|
break;
|
|
}
|
|
}
|
|
if (i < len && (!rex.reg_ic
|
|
|| utf_fold(utf_ptr2char((char *)scan)) != cf)) {
|
|
break;
|
|
}
|
|
scan += len;
|
|
count++;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ANYOF:
|
|
case ANYOF + ADD_NL:
|
|
testval = 1;
|
|
FALLTHROUGH;
|
|
|
|
case ANYBUT:
|
|
case ANYBUT + ADD_NL:
|
|
while (count < maxcount) {
|
|
int len;
|
|
if (*scan == NUL) {
|
|
if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline
|
|
|| rex.reg_line_lbr) {
|
|
break;
|
|
}
|
|
reg_nextline();
|
|
scan = rex.input;
|
|
if (got_int) {
|
|
break;
|
|
}
|
|
} else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) {
|
|
scan++;
|
|
} else if ((len = utfc_ptr2len((char *)scan)) > 1) {
|
|
if ((cstrchr((char *)opnd, utf_ptr2char((char *)scan)) == NULL) == testval) {
|
|
break;
|
|
}
|
|
scan += len;
|
|
} else {
|
|
if ((cstrchr((char *)opnd, *scan) == NULL) == testval) {
|
|
break;
|
|
}
|
|
scan++;
|
|
}
|
|
count++;
|
|
}
|
|
break;
|
|
|
|
case NEWL:
|
|
while (count < maxcount
|
|
&& ((*scan == NUL && rex.lnum <= rex.reg_maxline && !rex.reg_line_lbr
|
|
&& REG_MULTI) || (*scan == '\n' && rex.reg_line_lbr))) {
|
|
count++;
|
|
if (rex.reg_line_lbr) {
|
|
ADVANCE_REGINPUT();
|
|
} else {
|
|
reg_nextline();
|
|
}
|
|
scan = rex.input;
|
|
if (got_int) {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default: // Oh dear. Called inappropriately.
|
|
iemsg(_(e_re_corr));
|
|
#ifdef REGEXP_DEBUG
|
|
printf("Called regrepeat with op code %d\n", OP(p));
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
rex.input = scan;
|
|
|
|
return (int)count;
|
|
}
|
|
|
|
// Push an item onto the regstack.
|
|
// Returns pointer to new item. Returns NULL when out of memory.
|
|
static regitem_T *regstack_push(regstate_T state, uint8_t *scan)
|
|
{
|
|
regitem_T *rp;
|
|
|
|
if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) {
|
|
emsg(_(e_maxmempat));
|
|
return NULL;
|
|
}
|
|
ga_grow(®stack, sizeof(regitem_T));
|
|
|
|
rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len);
|
|
rp->rs_state = state;
|
|
rp->rs_scan = scan;
|
|
|
|
regstack.ga_len += (int)sizeof(regitem_T);
|
|
return rp;
|
|
}
|
|
|
|
// Pop an item from the regstack.
|
|
static void regstack_pop(uint8_t **scan)
|
|
{
|
|
regitem_T *rp;
|
|
|
|
rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len) - 1;
|
|
*scan = rp->rs_scan;
|
|
|
|
regstack.ga_len -= (int)sizeof(regitem_T);
|
|
}
|
|
|
|
// Save the current subexpr to "bp", so that they can be restored
|
|
// later by restore_subexpr().
|
|
static void save_subexpr(regbehind_T *bp)
|
|
FUNC_ATTR_NONNULL_ALL
|
|
{
|
|
// When "rex.need_clear_subexpr" is set we don't need to save the values, only
|
|
// remember that this flag needs to be set again when restoring.
|
|
bp->save_need_clear_subexpr = rex.need_clear_subexpr;
|
|
if (rex.need_clear_subexpr) {
|
|
return;
|
|
}
|
|
|
|
for (int i = 0; i < NSUBEXP; i++) {
|
|
if (REG_MULTI) {
|
|
bp->save_start[i].se_u.pos = rex.reg_startpos[i];
|
|
bp->save_end[i].se_u.pos = rex.reg_endpos[i];
|
|
} else {
|
|
bp->save_start[i].se_u.ptr = rex.reg_startp[i];
|
|
bp->save_end[i].se_u.ptr = rex.reg_endp[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Restore the subexpr from "bp".
|
|
static void restore_subexpr(regbehind_T *bp)
|
|
FUNC_ATTR_NONNULL_ALL
|
|
{
|
|
// Only need to restore saved values when they are not to be cleared.
|
|
rex.need_clear_subexpr = bp->save_need_clear_subexpr;
|
|
if (rex.need_clear_subexpr) {
|
|
return;
|
|
}
|
|
|
|
for (int i = 0; i < NSUBEXP; i++) {
|
|
if (REG_MULTI) {
|
|
rex.reg_startpos[i] = bp->save_start[i].se_u.pos;
|
|
rex.reg_endpos[i] = bp->save_end[i].se_u.pos;
|
|
} else {
|
|
rex.reg_startp[i] = bp->save_start[i].se_u.ptr;
|
|
rex.reg_endp[i] = bp->save_end[i].se_u.ptr;
|
|
}
|
|
}
|
|
}
|
|
/// Main matching routine
|
|
///
|
|
/// Conceptually the strategy is simple: Check to see whether the current node
|
|
/// matches, push an item onto the regstack and loop to see whether the rest
|
|
/// matches, and then act accordingly. In practice we make some effort to
|
|
/// avoid using the regstack, in particular by going through "ordinary" nodes
|
|
/// (that don't need to know whether the rest of the match failed) by a nested
|
|
/// loop.
|
|
///
|
|
/// @param scan Current node.
|
|
/// @param tm timeout limit or NULL
|
|
/// @param timed_out flag set on timeout or NULL
|
|
///
|
|
/// @return - true when there is a match. Leaves rex.input and rex.lnum
|
|
/// just after the last matched character.
|
|
/// - false when there is no match. Leaves rex.input and rex.lnum in an
|
|
/// undefined state!
|
|
static bool regmatch(uint8_t *scan, proftime_T *tm, int *timed_out)
|
|
{
|
|
uint8_t *next; // Next node.
|
|
int op;
|
|
int c;
|
|
regitem_T *rp;
|
|
int no;
|
|
int status; // one of the RA_ values:
|
|
int tm_count = 0;
|
|
|
|
// Make "regstack" and "backpos" empty. They are allocated and freed in
|
|
// bt_regexec_both() to reduce malloc()/free() calls.
|
|
regstack.ga_len = 0;
|
|
backpos.ga_len = 0;
|
|
|
|
// Repeat until "regstack" is empty.
|
|
for (;;) {
|
|
// Some patterns may take a long time to match, e.g., "\([a-z]\+\)\+Q".
|
|
// Allow interrupting them with CTRL-C.
|
|
reg_breakcheck();
|
|
|
|
#ifdef REGEXP_DEBUG
|
|
if (scan != NULL && regnarrate) {
|
|
os_errmsg((char *)regprop(scan));
|
|
os_errmsg("(\n");
|
|
}
|
|
#endif
|
|
|
|
// Repeat for items that can be matched sequentially, without using the
|
|
// regstack.
|
|
for (;;) {
|
|
if (got_int || scan == NULL) {
|
|
status = RA_FAIL;
|
|
break;
|
|
}
|
|
// Check for timeout once in a 100 times to avoid overhead.
|
|
if (tm != NULL && ++tm_count == 100) {
|
|
tm_count = 0;
|
|
if (profile_passed_limit(*tm)) {
|
|
if (timed_out != NULL) {
|
|
*timed_out = true;
|
|
}
|
|
status = RA_FAIL;
|
|
break;
|
|
}
|
|
}
|
|
status = RA_CONT;
|
|
|
|
#ifdef REGEXP_DEBUG
|
|
if (regnarrate) {
|
|
os_errmsg((char *)regprop(scan));
|
|
os_errmsg("...\n");
|
|
if (re_extmatch_in != NULL) {
|
|
int i;
|
|
|
|
os_errmsg(_("External submatches:\n"));
|
|
for (i = 0; i < NSUBEXP; i++) {
|
|
os_errmsg(" \"");
|
|
if (re_extmatch_in->matches[i] != NULL) {
|
|
os_errmsg((char *)re_extmatch_in->matches[i]);
|
|
}
|
|
os_errmsg("\"\n");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
next = regnext(scan);
|
|
|
|
op = OP(scan);
|
|
// Check for character class with NL added.
|
|
if (!rex.reg_line_lbr && WITH_NL(op) && REG_MULTI
|
|
&& *rex.input == NUL && rex.lnum <= rex.reg_maxline) {
|
|
reg_nextline();
|
|
} else if (rex.reg_line_lbr && WITH_NL(op) && *rex.input == '\n') {
|
|
ADVANCE_REGINPUT();
|
|
} else {
|
|
if (WITH_NL(op)) {
|
|
op -= ADD_NL;
|
|
}
|
|
c = utf_ptr2char((char *)rex.input);
|
|
switch (op) {
|
|
case BOL:
|
|
if (rex.input != rex.line) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case EOL:
|
|
if (c != NUL) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case RE_BOF:
|
|
// We're not at the beginning of the file when below the first
|
|
// line where we started, not at the start of the line or we
|
|
// didn't start at the first line of the buffer.
|
|
if (rex.lnum != 0 || rex.input != rex.line
|
|
|| (REG_MULTI && rex.reg_firstlnum > 1)) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case RE_EOF:
|
|
if (rex.lnum != rex.reg_maxline || c != NUL) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case CURSOR:
|
|
// Check if the buffer is in a window and compare the
|
|
// rex.reg_win->w_cursor position to the match position.
|
|
if (rex.reg_win == NULL
|
|
|| (rex.lnum + rex.reg_firstlnum != rex.reg_win->w_cursor.lnum)
|
|
|| ((colnr_T)(rex.input - rex.line) !=
|
|
rex.reg_win->w_cursor.col)) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case RE_MARK:
|
|
// Compare the mark position to the match position.
|
|
{
|
|
int mark = OPERAND(scan)[0];
|
|
int cmp = OPERAND(scan)[1];
|
|
pos_T *pos;
|
|
size_t col = REG_MULTI ? (size_t)(rex.input - rex.line) : 0;
|
|
fmark_T *fm = mark_get(rex.reg_buf, curwin, NULL, kMarkBufLocal, mark);
|
|
|
|
// Line may have been freed, get it again.
|
|
if (REG_MULTI) {
|
|
rex.line = (uint8_t *)reg_getline(rex.lnum);
|
|
rex.input = rex.line + col;
|
|
}
|
|
|
|
if (fm == NULL // mark doesn't exist
|
|
|| fm->mark.lnum <= 0) { // mark isn't set in reg_buf
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
pos = &fm->mark;
|
|
const colnr_T pos_col = pos->lnum == rex.lnum + rex.reg_firstlnum
|
|
&& pos->col == MAXCOL
|
|
? (colnr_T)strlen((char *)reg_getline(pos->lnum - rex.reg_firstlnum))
|
|
: pos->col;
|
|
|
|
if (pos->lnum == rex.lnum + rex.reg_firstlnum
|
|
? (pos_col == (colnr_T)(rex.input - rex.line)
|
|
? (cmp == '<' || cmp == '>')
|
|
: (pos_col < (colnr_T)(rex.input - rex.line)
|
|
? cmp != '>'
|
|
: cmp != '<'))
|
|
: (pos->lnum < rex.lnum + rex.reg_firstlnum
|
|
? cmp != '>'
|
|
: cmp != '<')) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case RE_VISUAL:
|
|
if (!reg_match_visual()) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case RE_LNUM:
|
|
assert(rex.lnum + rex.reg_firstlnum >= 0
|
|
&& (uintmax_t)(rex.lnum + rex.reg_firstlnum) <= UINT32_MAX);
|
|
if (!REG_MULTI
|
|
|| !re_num_cmp((uint32_t)(rex.lnum + rex.reg_firstlnum), scan)) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case RE_COL:
|
|
assert(rex.input - rex.line + 1 >= 0
|
|
&& (uintmax_t)(rex.input - rex.line + 1) <= UINT32_MAX);
|
|
if (!re_num_cmp((uint32_t)(rex.input - rex.line + 1), scan)) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case RE_VCOL:
|
|
if (!re_num_cmp(win_linetabsize(rex.reg_win == NULL
|
|
? curwin : rex.reg_win,
|
|
rex.reg_firstlnum + rex.lnum,
|
|
(char *)rex.line,
|
|
(colnr_T)(rex.input - rex.line)) + 1,
|
|
scan)) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case BOW: // \<word; rex.input points to w
|
|
if (c == NUL) { // Can't match at end of line
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
// Get class of current and previous char (if it exists).
|
|
const int this_class =
|
|
mb_get_class_tab((char *)rex.input, rex.reg_buf->b_chartab);
|
|
if (this_class <= 1) {
|
|
status = RA_NOMATCH; // Not on a word at all.
|
|
} else if (reg_prev_class() == this_class) {
|
|
status = RA_NOMATCH; // Previous char is in same word.
|
|
}
|
|
}
|
|
break;
|
|
|
|
case EOW: // word\>; rex.input points after d
|
|
if (rex.input == rex.line) { // Can't match at start of line
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
int this_class, prev_class;
|
|
|
|
// Get class of current and previous char (if it exists).
|
|
this_class = mb_get_class_tab((char *)rex.input, rex.reg_buf->b_chartab);
|
|
prev_class = reg_prev_class();
|
|
if (this_class == prev_class
|
|
|| prev_class == 0 || prev_class == 1) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
}
|
|
break; // Matched with EOW
|
|
|
|
case ANY:
|
|
// ANY does not match new lines.
|
|
if (c == NUL) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case IDENT:
|
|
if (!vim_isIDc(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case SIDENT:
|
|
if (ascii_isdigit(*rex.input) || !vim_isIDc(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case KWORD:
|
|
if (!vim_iswordp_buf((char *)rex.input, rex.reg_buf)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case SKWORD:
|
|
if (ascii_isdigit(*rex.input)
|
|
|| !vim_iswordp_buf((char *)rex.input, rex.reg_buf)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case FNAME:
|
|
if (!vim_isfilec(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case SFNAME:
|
|
if (ascii_isdigit(*rex.input) || !vim_isfilec(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case PRINT:
|
|
if (!vim_isprintc(utf_ptr2char((char *)rex.input))) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case SPRINT:
|
|
if (ascii_isdigit(*rex.input) || !vim_isprintc(utf_ptr2char((char *)rex.input))) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case WHITE:
|
|
if (!ascii_iswhite(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case NWHITE:
|
|
if (c == NUL || ascii_iswhite(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case DIGIT:
|
|
if (!ri_digit(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case NDIGIT:
|
|
if (c == NUL || ri_digit(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case HEX:
|
|
if (!ri_hex(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case NHEX:
|
|
if (c == NUL || ri_hex(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case OCTAL:
|
|
if (!ri_octal(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case NOCTAL:
|
|
if (c == NUL || ri_octal(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case WORD:
|
|
if (!ri_word(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case NWORD:
|
|
if (c == NUL || ri_word(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case HEAD:
|
|
if (!ri_head(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case NHEAD:
|
|
if (c == NUL || ri_head(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case ALPHA:
|
|
if (!ri_alpha(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case NALPHA:
|
|
if (c == NUL || ri_alpha(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case LOWER:
|
|
if (!ri_lower(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case NLOWER:
|
|
if (c == NUL || ri_lower(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case UPPER:
|
|
if (!ri_upper(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case NUPPER:
|
|
if (c == NUL || ri_upper(c)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case EXACTLY: {
|
|
int len;
|
|
uint8_t *opnd;
|
|
|
|
opnd = OPERAND(scan);
|
|
// Inline the first byte, for speed.
|
|
if (*opnd != *rex.input
|
|
&& (!rex.reg_ic)) {
|
|
status = RA_NOMATCH;
|
|
} else if (*opnd == NUL) {
|
|
// match empty string always works; happens when "~" is
|
|
// empty.
|
|
} else {
|
|
if (opnd[1] == NUL && !rex.reg_ic) {
|
|
len = 1; // matched a single byte above
|
|
} else {
|
|
// Need to match first byte again for multi-byte.
|
|
len = (int)strlen((char *)opnd);
|
|
if (cstrncmp((char *)opnd, (char *)rex.input, &len) != 0) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
}
|
|
// Check for following composing character, unless %C
|
|
// follows (skips over all composing chars).
|
|
if (status != RA_NOMATCH
|
|
&& utf_composinglike((char *)rex.input, (char *)rex.input + len)
|
|
&& !rex.reg_icombine
|
|
&& OP(next) != RE_COMPOSING) {
|
|
// raaron: This code makes a composing character get
|
|
// ignored, which is the correct behavior (sometimes)
|
|
// for voweled Hebrew texts.
|
|
status = RA_NOMATCH;
|
|
}
|
|
if (status != RA_NOMATCH) {
|
|
rex.input += len;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ANYOF:
|
|
case ANYBUT:
|
|
if (c == NUL) {
|
|
status = RA_NOMATCH;
|
|
} else if ((cstrchr((char *)OPERAND(scan), c) == NULL) == (op == ANYOF)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
ADVANCE_REGINPUT();
|
|
}
|
|
break;
|
|
|
|
case MULTIBYTECODE: {
|
|
int i, len;
|
|
|
|
const uint8_t *opnd = OPERAND(scan);
|
|
// Safety check (just in case 'encoding' was changed since
|
|
// compiling the program).
|
|
if ((len = utfc_ptr2len((char *)opnd)) < 2) {
|
|
status = RA_NOMATCH;
|
|
break;
|
|
}
|
|
const int opndc = utf_ptr2char((char *)opnd);
|
|
if (utf_iscomposing(opndc)) {
|
|
// When only a composing char is given match at any
|
|
// position where that composing char appears.
|
|
status = RA_NOMATCH;
|
|
for (i = 0; rex.input[i] != NUL;
|
|
i += utf_ptr2len((char *)rex.input + i)) {
|
|
const int inpc = utf_ptr2char((char *)rex.input + i);
|
|
if (!utf_iscomposing(inpc)) {
|
|
if (i > 0) {
|
|
break;
|
|
}
|
|
} else if (opndc == inpc) {
|
|
// Include all following composing chars.
|
|
len = i + utfc_ptr2len((char *)rex.input + i);
|
|
status = RA_MATCH;
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
for (i = 0; i < len; i++) {
|
|
if (opnd[i] != rex.input[i]) {
|
|
status = RA_NOMATCH;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
rex.input += len;
|
|
}
|
|
break;
|
|
|
|
case RE_COMPOSING:
|
|
// Skip composing characters.
|
|
while (utf_iscomposing(utf_ptr2char((char *)rex.input))) {
|
|
MB_CPTR_ADV(rex.input);
|
|
}
|
|
break;
|
|
|
|
case NOTHING:
|
|
break;
|
|
|
|
case BACK: {
|
|
int i;
|
|
|
|
// When we run into BACK we need to check if we don't keep
|
|
// looping without matching any input. The second and later
|
|
// times a BACK is encountered it fails if the input is still
|
|
// at the same position as the previous time.
|
|
// The positions are stored in "backpos" and found by the
|
|
// current value of "scan", the position in the RE program.
|
|
backpos_T *bp = (backpos_T *)backpos.ga_data;
|
|
for (i = 0; i < backpos.ga_len; i++) {
|
|
if (bp[i].bp_scan == scan) {
|
|
break;
|
|
}
|
|
}
|
|
if (i == backpos.ga_len) {
|
|
backpos_T *p = GA_APPEND_VIA_PTR(backpos_T, &backpos);
|
|
p->bp_scan = scan;
|
|
} else if (reg_save_equal(&bp[i].bp_pos)) {
|
|
// Still at same position as last time, fail.
|
|
status = RA_NOMATCH;
|
|
}
|
|
|
|
assert(status != RA_FAIL);
|
|
if (status != RA_NOMATCH) {
|
|
reg_save(&bp[i].bp_pos, &backpos);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case MOPEN + 0: // Match start: \zs
|
|
case MOPEN + 1: // \(
|
|
case MOPEN + 2:
|
|
case MOPEN + 3:
|
|
case MOPEN + 4:
|
|
case MOPEN + 5:
|
|
case MOPEN + 6:
|
|
case MOPEN + 7:
|
|
case MOPEN + 8:
|
|
case MOPEN + 9:
|
|
no = op - MOPEN;
|
|
cleanup_subexpr();
|
|
rp = regstack_push(RS_MOPEN, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
rp->rs_no = (int16_t)no;
|
|
save_se(&rp->rs_un.sesave, &rex.reg_startpos[no],
|
|
&rex.reg_startp[no]);
|
|
// We simply continue and handle the result when done.
|
|
}
|
|
break;
|
|
|
|
case NOPEN: // \%(
|
|
case NCLOSE: // \) after \%(
|
|
if (regstack_push(RS_NOPEN, scan) == NULL) {
|
|
status = RA_FAIL;
|
|
}
|
|
// We simply continue and handle the result when done.
|
|
break;
|
|
|
|
case ZOPEN + 1:
|
|
case ZOPEN + 2:
|
|
case ZOPEN + 3:
|
|
case ZOPEN + 4:
|
|
case ZOPEN + 5:
|
|
case ZOPEN + 6:
|
|
case ZOPEN + 7:
|
|
case ZOPEN + 8:
|
|
case ZOPEN + 9:
|
|
no = op - ZOPEN;
|
|
cleanup_zsubexpr();
|
|
rp = regstack_push(RS_ZOPEN, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
rp->rs_no = (int16_t)no;
|
|
save_se(&rp->rs_un.sesave, ®_startzpos[no],
|
|
®_startzp[no]);
|
|
// We simply continue and handle the result when done.
|
|
}
|
|
break;
|
|
|
|
case MCLOSE + 0: // Match end: \ze
|
|
case MCLOSE + 1: // \)
|
|
case MCLOSE + 2:
|
|
case MCLOSE + 3:
|
|
case MCLOSE + 4:
|
|
case MCLOSE + 5:
|
|
case MCLOSE + 6:
|
|
case MCLOSE + 7:
|
|
case MCLOSE + 8:
|
|
case MCLOSE + 9:
|
|
no = op - MCLOSE;
|
|
cleanup_subexpr();
|
|
rp = regstack_push(RS_MCLOSE, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
rp->rs_no = (int16_t)no;
|
|
save_se(&rp->rs_un.sesave, &rex.reg_endpos[no], &rex.reg_endp[no]);
|
|
// We simply continue and handle the result when done.
|
|
}
|
|
break;
|
|
|
|
case ZCLOSE + 1: // \) after \z(
|
|
case ZCLOSE + 2:
|
|
case ZCLOSE + 3:
|
|
case ZCLOSE + 4:
|
|
case ZCLOSE + 5:
|
|
case ZCLOSE + 6:
|
|
case ZCLOSE + 7:
|
|
case ZCLOSE + 8:
|
|
case ZCLOSE + 9:
|
|
no = op - ZCLOSE;
|
|
cleanup_zsubexpr();
|
|
rp = regstack_push(RS_ZCLOSE, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
rp->rs_no = (int16_t)no;
|
|
save_se(&rp->rs_un.sesave, ®_endzpos[no],
|
|
®_endzp[no]);
|
|
// We simply continue and handle the result when done.
|
|
}
|
|
break;
|
|
|
|
case BACKREF + 1:
|
|
case BACKREF + 2:
|
|
case BACKREF + 3:
|
|
case BACKREF + 4:
|
|
case BACKREF + 5:
|
|
case BACKREF + 6:
|
|
case BACKREF + 7:
|
|
case BACKREF + 8:
|
|
case BACKREF + 9: {
|
|
int len;
|
|
|
|
no = op - BACKREF;
|
|
cleanup_subexpr();
|
|
if (!REG_MULTI) { // Single-line regexp
|
|
if (rex.reg_startp[no] == NULL || rex.reg_endp[no] == NULL) {
|
|
// Backref was not set: Match an empty string.
|
|
len = 0;
|
|
} else {
|
|
// Compare current input with back-ref in the same line.
|
|
len = (int)(rex.reg_endp[no] - rex.reg_startp[no]);
|
|
if (cstrncmp((char *)rex.reg_startp[no], (char *)rex.input, &len) != 0) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
}
|
|
} else { // Multi-line regexp
|
|
if (rex.reg_startpos[no].lnum < 0 || rex.reg_endpos[no].lnum < 0) {
|
|
// Backref was not set: Match an empty string.
|
|
len = 0;
|
|
} else {
|
|
if (rex.reg_startpos[no].lnum == rex.lnum
|
|
&& rex.reg_endpos[no].lnum == rex.lnum) {
|
|
// Compare back-ref within the current line.
|
|
len = rex.reg_endpos[no].col - rex.reg_startpos[no].col;
|
|
if (cstrncmp((char *)rex.line + rex.reg_startpos[no].col,
|
|
(char *)rex.input, &len) != 0) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
} else {
|
|
// Messy situation: Need to compare between two lines.
|
|
int r = match_with_backref(rex.reg_startpos[no].lnum,
|
|
rex.reg_startpos[no].col,
|
|
rex.reg_endpos[no].lnum,
|
|
rex.reg_endpos[no].col,
|
|
&len);
|
|
if (r != RA_MATCH) {
|
|
status = r;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Matched the backref, skip over it.
|
|
rex.input += len;
|
|
}
|
|
break;
|
|
|
|
case ZREF + 1:
|
|
case ZREF + 2:
|
|
case ZREF + 3:
|
|
case ZREF + 4:
|
|
case ZREF + 5:
|
|
case ZREF + 6:
|
|
case ZREF + 7:
|
|
case ZREF + 8:
|
|
case ZREF + 9:
|
|
cleanup_zsubexpr();
|
|
no = op - ZREF;
|
|
if (re_extmatch_in != NULL
|
|
&& re_extmatch_in->matches[no] != NULL) {
|
|
int len = (int)strlen((char *)re_extmatch_in->matches[no]);
|
|
if (cstrncmp((char *)re_extmatch_in->matches[no], (char *)rex.input, &len) != 0) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
rex.input += len;
|
|
}
|
|
} else {
|
|
// Backref was not set: Match an empty string.
|
|
}
|
|
break;
|
|
|
|
case BRANCH:
|
|
if (OP(next) != BRANCH) { // No choice.
|
|
next = OPERAND(scan); // Avoid recursion.
|
|
} else {
|
|
rp = regstack_push(RS_BRANCH, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
status = RA_BREAK; // rest is below
|
|
}
|
|
}
|
|
break;
|
|
|
|
case BRACE_LIMITS:
|
|
if (OP(next) == BRACE_SIMPLE) {
|
|
bl_minval = OPERAND_MIN(scan);
|
|
bl_maxval = OPERAND_MAX(scan);
|
|
} else if (OP(next) >= BRACE_COMPLEX
|
|
&& OP(next) < BRACE_COMPLEX + 10) {
|
|
no = OP(next) - BRACE_COMPLEX;
|
|
brace_min[no] = OPERAND_MIN(scan);
|
|
brace_max[no] = OPERAND_MAX(scan);
|
|
brace_count[no] = 0;
|
|
} else {
|
|
internal_error("BRACE_LIMITS");
|
|
status = RA_FAIL;
|
|
}
|
|
break;
|
|
|
|
case BRACE_COMPLEX + 0:
|
|
case BRACE_COMPLEX + 1:
|
|
case BRACE_COMPLEX + 2:
|
|
case BRACE_COMPLEX + 3:
|
|
case BRACE_COMPLEX + 4:
|
|
case BRACE_COMPLEX + 5:
|
|
case BRACE_COMPLEX + 6:
|
|
case BRACE_COMPLEX + 7:
|
|
case BRACE_COMPLEX + 8:
|
|
case BRACE_COMPLEX + 9:
|
|
no = op - BRACE_COMPLEX;
|
|
brace_count[no]++;
|
|
|
|
// If not matched enough times yet, try one more
|
|
if (brace_count[no] <= (brace_min[no] <= brace_max[no]
|
|
? brace_min[no] : brace_max[no])) {
|
|
rp = regstack_push(RS_BRCPLX_MORE, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
rp->rs_no = (int16_t)no;
|
|
reg_save(&rp->rs_un.regsave, &backpos);
|
|
next = OPERAND(scan);
|
|
// We continue and handle the result when done.
|
|
}
|
|
break;
|
|
}
|
|
|
|
// If matched enough times, may try matching some more
|
|
if (brace_min[no] <= brace_max[no]) {
|
|
// Range is the normal way around, use longest match
|
|
if (brace_count[no] <= brace_max[no]) {
|
|
rp = regstack_push(RS_BRCPLX_LONG, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
rp->rs_no = (int16_t)no;
|
|
reg_save(&rp->rs_un.regsave, &backpos);
|
|
next = OPERAND(scan);
|
|
// We continue and handle the result when done.
|
|
}
|
|
}
|
|
} else {
|
|
// Range is backwards, use shortest match first
|
|
if (brace_count[no] <= brace_min[no]) {
|
|
rp = regstack_push(RS_BRCPLX_SHORT, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
reg_save(&rp->rs_un.regsave, &backpos);
|
|
// We continue and handle the result when done.
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case BRACE_SIMPLE:
|
|
case STAR:
|
|
case PLUS: {
|
|
regstar_T rst;
|
|
|
|
// Lookahead to avoid useless match attempts when we know
|
|
// what character comes next.
|
|
if (OP(next) == EXACTLY) {
|
|
rst.nextb = *OPERAND(next);
|
|
if (rex.reg_ic) {
|
|
if (mb_isupper(rst.nextb)) {
|
|
rst.nextb_ic = mb_tolower(rst.nextb);
|
|
} else {
|
|
rst.nextb_ic = mb_toupper(rst.nextb);
|
|
}
|
|
} else {
|
|
rst.nextb_ic = rst.nextb;
|
|
}
|
|
} else {
|
|
rst.nextb = NUL;
|
|
rst.nextb_ic = NUL;
|
|
}
|
|
if (op != BRACE_SIMPLE) {
|
|
rst.minval = (op == STAR) ? 0 : 1;
|
|
rst.maxval = MAX_LIMIT;
|
|
} else {
|
|
rst.minval = bl_minval;
|
|
rst.maxval = bl_maxval;
|
|
}
|
|
|
|
// When maxval > minval, try matching as much as possible, up
|
|
// to maxval. When maxval < minval, try matching at least the
|
|
// minimal number (since the range is backwards, that's also
|
|
// maxval!).
|
|
rst.count = regrepeat(OPERAND(scan), rst.maxval);
|
|
if (got_int) {
|
|
status = RA_FAIL;
|
|
break;
|
|
}
|
|
if (rst.minval <= rst.maxval
|
|
? rst.count >= rst.minval : rst.count >= rst.maxval) {
|
|
// It could match. Prepare for trying to match what
|
|
// follows. The code is below. Parameters are stored in
|
|
// a regstar_T on the regstack.
|
|
if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) {
|
|
emsg(_(e_maxmempat));
|
|
status = RA_FAIL;
|
|
} else {
|
|
ga_grow(®stack, sizeof(regstar_T));
|
|
regstack.ga_len += (int)sizeof(regstar_T);
|
|
rp = regstack_push(rst.minval <= rst.maxval ? RS_STAR_LONG : RS_STAR_SHORT, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
*(((regstar_T *)rp) - 1) = rst;
|
|
status = RA_BREAK; // skip the restore bits
|
|
}
|
|
}
|
|
} else {
|
|
status = RA_NOMATCH;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case NOMATCH:
|
|
case MATCH:
|
|
case SUBPAT:
|
|
rp = regstack_push(RS_NOMATCH, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
rp->rs_no = (int16_t)op;
|
|
reg_save(&rp->rs_un.regsave, &backpos);
|
|
next = OPERAND(scan);
|
|
// We continue and handle the result when done.
|
|
}
|
|
break;
|
|
|
|
case BEHIND:
|
|
case NOBEHIND:
|
|
// Need a bit of room to store extra positions.
|
|
if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) {
|
|
emsg(_(e_maxmempat));
|
|
status = RA_FAIL;
|
|
} else {
|
|
ga_grow(®stack, sizeof(regbehind_T));
|
|
regstack.ga_len += (int)sizeof(regbehind_T);
|
|
rp = regstack_push(RS_BEHIND1, scan);
|
|
if (rp == NULL) {
|
|
status = RA_FAIL;
|
|
} else {
|
|
// Need to save the subexpr to be able to restore them
|
|
// when there is a match but we don't use it.
|
|
save_subexpr(((regbehind_T *)rp) - 1);
|
|
|
|
rp->rs_no = (int16_t)op;
|
|
reg_save(&rp->rs_un.regsave, &backpos);
|
|
// First try if what follows matches. If it does then we
|
|
// check the behind match by looping.
|
|
}
|
|
}
|
|
break;
|
|
|
|
case BHPOS:
|
|
if (REG_MULTI) {
|
|
if (behind_pos.rs_u.pos.col != (colnr_T)(rex.input - rex.line)
|
|
|| behind_pos.rs_u.pos.lnum != rex.lnum) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
} else if (behind_pos.rs_u.ptr != rex.input) {
|
|
status = RA_NOMATCH;
|
|
}
|
|
break;
|
|
|
|
case NEWL:
|
|
if ((c != NUL || !REG_MULTI || rex.lnum > rex.reg_maxline
|
|
|| rex.reg_line_lbr) && (c != '\n' || !rex.reg_line_lbr)) {
|
|
status = RA_NOMATCH;
|
|
} else if (rex.reg_line_lbr) {
|
|
ADVANCE_REGINPUT();
|
|
} else {
|
|
reg_nextline();
|
|
}
|
|
break;
|
|
|
|
case END:
|
|
status = RA_MATCH; // Success!
|
|
break;
|
|
|
|
default:
|
|
iemsg(_(e_re_corr));
|
|
#ifdef REGEXP_DEBUG
|
|
printf("Illegal op code %d\n", op);
|
|
#endif
|
|
status = RA_FAIL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// If we can't continue sequentially, break the inner loop.
|
|
if (status != RA_CONT) {
|
|
break;
|
|
}
|
|
|
|
// Continue in inner loop, advance to next item.
|
|
scan = next;
|
|
} // end of inner loop
|
|
|
|
// If there is something on the regstack execute the code for the state.
|
|
// If the state is popped then loop and use the older state.
|
|
while (!GA_EMPTY(®stack) && status != RA_FAIL) {
|
|
rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len) - 1;
|
|
switch (rp->rs_state) {
|
|
case RS_NOPEN:
|
|
// Result is passed on as-is, simply pop the state.
|
|
regstack_pop(&scan);
|
|
break;
|
|
|
|
case RS_MOPEN:
|
|
// Pop the state. Restore pointers when there is no match.
|
|
if (status == RA_NOMATCH) {
|
|
restore_se(&rp->rs_un.sesave, &rex.reg_startpos[rp->rs_no],
|
|
&rex.reg_startp[rp->rs_no]);
|
|
}
|
|
regstack_pop(&scan);
|
|
break;
|
|
|
|
case RS_ZOPEN:
|
|
// Pop the state. Restore pointers when there is no match.
|
|
if (status == RA_NOMATCH) {
|
|
restore_se(&rp->rs_un.sesave, ®_startzpos[rp->rs_no],
|
|
®_startzp[rp->rs_no]);
|
|
}
|
|
regstack_pop(&scan);
|
|
break;
|
|
|
|
case RS_MCLOSE:
|
|
// Pop the state. Restore pointers when there is no match.
|
|
if (status == RA_NOMATCH) {
|
|
restore_se(&rp->rs_un.sesave, &rex.reg_endpos[rp->rs_no],
|
|
&rex.reg_endp[rp->rs_no]);
|
|
}
|
|
regstack_pop(&scan);
|
|
break;
|
|
|
|
case RS_ZCLOSE:
|
|
// Pop the state. Restore pointers when there is no match.
|
|
if (status == RA_NOMATCH) {
|
|
restore_se(&rp->rs_un.sesave, ®_endzpos[rp->rs_no],
|
|
®_endzp[rp->rs_no]);
|
|
}
|
|
regstack_pop(&scan);
|
|
break;
|
|
|
|
case RS_BRANCH:
|
|
if (status == RA_MATCH) {
|
|
// this branch matched, use it
|
|
regstack_pop(&scan);
|
|
} else {
|
|
if (status != RA_BREAK) {
|
|
// After a non-matching branch: try next one.
|
|
reg_restore(&rp->rs_un.regsave, &backpos);
|
|
scan = rp->rs_scan;
|
|
}
|
|
if (scan == NULL || OP(scan) != BRANCH) {
|
|
// no more branches, didn't find a match
|
|
status = RA_NOMATCH;
|
|
regstack_pop(&scan);
|
|
} else {
|
|
// Prepare to try a branch.
|
|
rp->rs_scan = regnext(scan);
|
|
reg_save(&rp->rs_un.regsave, &backpos);
|
|
scan = OPERAND(scan);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case RS_BRCPLX_MORE:
|
|
// Pop the state. Restore pointers when there is no match.
|
|
if (status == RA_NOMATCH) {
|
|
reg_restore(&rp->rs_un.regsave, &backpos);
|
|
brace_count[rp->rs_no]--; // decrement match count
|
|
}
|
|
regstack_pop(&scan);
|
|
break;
|
|
|
|
case RS_BRCPLX_LONG:
|
|
// Pop the state. Restore pointers when there is no match.
|
|
if (status == RA_NOMATCH) {
|
|
// There was no match, but we did find enough matches.
|
|
reg_restore(&rp->rs_un.regsave, &backpos);
|
|
brace_count[rp->rs_no]--;
|
|
// continue with the items after "\{}"
|
|
status = RA_CONT;
|
|
}
|
|
regstack_pop(&scan);
|
|
if (status == RA_CONT) {
|
|
scan = regnext(scan);
|
|
}
|
|
break;
|
|
|
|
case RS_BRCPLX_SHORT:
|
|
// Pop the state. Restore pointers when there is no match.
|
|
if (status == RA_NOMATCH) {
|
|
// There was no match, try to match one more item.
|
|
reg_restore(&rp->rs_un.regsave, &backpos);
|
|
}
|
|
regstack_pop(&scan);
|
|
if (status == RA_NOMATCH) {
|
|
scan = OPERAND(scan);
|
|
status = RA_CONT;
|
|
}
|
|
break;
|
|
|
|
case RS_NOMATCH:
|
|
// Pop the state. If the operand matches for NOMATCH or
|
|
// doesn't match for MATCH/SUBPAT, we fail. Otherwise backup,
|
|
// except for SUBPAT, and continue with the next item.
|
|
if (status == (rp->rs_no == NOMATCH ? RA_MATCH : RA_NOMATCH)) {
|
|
status = RA_NOMATCH;
|
|
} else {
|
|
status = RA_CONT;
|
|
if (rp->rs_no != SUBPAT) { // zero-width
|
|
reg_restore(&rp->rs_un.regsave, &backpos);
|
|
}
|
|
}
|
|
regstack_pop(&scan);
|
|
if (status == RA_CONT) {
|
|
scan = regnext(scan);
|
|
}
|
|
break;
|
|
|
|
case RS_BEHIND1:
|
|
if (status == RA_NOMATCH) {
|
|
regstack_pop(&scan);
|
|
regstack.ga_len -= (int)sizeof(regbehind_T);
|
|
} else {
|
|
// The stuff after BEHIND/NOBEHIND matches. Now try if
|
|
// the behind part does (not) match before the current
|
|
// position in the input. This must be done at every
|
|
// position in the input and checking if the match ends at
|
|
// the current position.
|
|
|
|
// save the position after the found match for next
|
|
reg_save(&(((regbehind_T *)rp) - 1)->save_after, &backpos);
|
|
|
|
// Start looking for a match with operand at the current
|
|
// position. Go back one character until we find the
|
|
// result, hitting the start of the line or the previous
|
|
// line (for multi-line matching).
|
|
// Set behind_pos to where the match should end, BHPOS
|
|
// will match it. Save the current value.
|
|
(((regbehind_T *)rp) - 1)->save_behind = behind_pos;
|
|
behind_pos = rp->rs_un.regsave;
|
|
|
|
rp->rs_state = RS_BEHIND2;
|
|
|
|
reg_restore(&rp->rs_un.regsave, &backpos);
|
|
scan = OPERAND(rp->rs_scan) + 4;
|
|
}
|
|
break;
|
|
|
|
case RS_BEHIND2:
|
|
// Looping for BEHIND / NOBEHIND match.
|
|
if (status == RA_MATCH && reg_save_equal(&behind_pos)) {
|
|
// found a match that ends where "next" started
|
|
behind_pos = (((regbehind_T *)rp) - 1)->save_behind;
|
|
if (rp->rs_no == BEHIND) {
|
|
reg_restore(&(((regbehind_T *)rp) - 1)->save_after,
|
|
&backpos);
|
|
} else {
|
|
// But we didn't want a match. Need to restore the
|
|
// subexpr, because what follows matched, so they have
|
|
// been set.
|
|
status = RA_NOMATCH;
|
|
restore_subexpr(((regbehind_T *)rp) - 1);
|
|
}
|
|
regstack_pop(&scan);
|
|
regstack.ga_len -= (int)sizeof(regbehind_T);
|
|
} else {
|
|
long limit;
|
|
|
|
// No match or a match that doesn't end where we want it: Go
|
|
// back one character. May go to previous line once.
|
|
no = OK;
|
|
limit = OPERAND_MIN(rp->rs_scan);
|
|
if (REG_MULTI) {
|
|
if (limit > 0
|
|
&& ((rp->rs_un.regsave.rs_u.pos.lnum
|
|
< behind_pos.rs_u.pos.lnum
|
|
? (colnr_T)strlen((char *)rex.line)
|
|
: behind_pos.rs_u.pos.col)
|
|
- rp->rs_un.regsave.rs_u.pos.col >= limit)) {
|
|
no = FAIL;
|
|
} else if (rp->rs_un.regsave.rs_u.pos.col == 0) {
|
|
if (rp->rs_un.regsave.rs_u.pos.lnum
|
|
< behind_pos.rs_u.pos.lnum
|
|
|| reg_getline(--rp->rs_un.regsave.rs_u.pos.lnum)
|
|
== NULL) {
|
|
no = FAIL;
|
|
} else {
|
|
reg_restore(&rp->rs_un.regsave, &backpos);
|
|
rp->rs_un.regsave.rs_u.pos.col =
|
|
(colnr_T)strlen((char *)rex.line);
|
|
}
|
|
} else {
|
|
const uint8_t *const line =
|
|
(uint8_t *)reg_getline(rp->rs_un.regsave.rs_u.pos.lnum);
|
|
|
|
rp->rs_un.regsave.rs_u.pos.col -=
|
|
utf_head_off((char *)line,
|
|
(char *)line + rp->rs_un.regsave.rs_u.pos.col - 1)
|
|
+ 1;
|
|
}
|
|
} else {
|
|
if (rp->rs_un.regsave.rs_u.ptr == rex.line) {
|
|
no = FAIL;
|
|
} else {
|
|
MB_PTR_BACK(rex.line, rp->rs_un.regsave.rs_u.ptr);
|
|
if (limit > 0
|
|
&& (behind_pos.rs_u.ptr - rp->rs_un.regsave.rs_u.ptr) > (ptrdiff_t)limit) {
|
|
no = FAIL;
|
|
}
|
|
}
|
|
}
|
|
if (no == OK) {
|
|
// Advanced, prepare for finding match again.
|
|
reg_restore(&rp->rs_un.regsave, &backpos);
|
|
scan = OPERAND(rp->rs_scan) + 4;
|
|
if (status == RA_MATCH) {
|
|
// We did match, so subexpr may have been changed,
|
|
// need to restore them for the next try.
|
|
status = RA_NOMATCH;
|
|
restore_subexpr(((regbehind_T *)rp) - 1);
|
|
}
|
|
} else {
|
|
// Can't advance. For NOBEHIND that's a match.
|
|
behind_pos = (((regbehind_T *)rp) - 1)->save_behind;
|
|
if (rp->rs_no == NOBEHIND) {
|
|
reg_restore(&(((regbehind_T *)rp) - 1)->save_after,
|
|
&backpos);
|
|
status = RA_MATCH;
|
|
} else {
|
|
// We do want a proper match. Need to restore the
|
|
// subexpr if we had a match, because they may have
|
|
// been set.
|
|
if (status == RA_MATCH) {
|
|
status = RA_NOMATCH;
|
|
restore_subexpr(((regbehind_T *)rp) - 1);
|
|
}
|
|
}
|
|
regstack_pop(&scan);
|
|
regstack.ga_len -= (int)sizeof(regbehind_T);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case RS_STAR_LONG:
|
|
case RS_STAR_SHORT: {
|
|
regstar_T *rst = ((regstar_T *)rp) - 1;
|
|
|
|
if (status == RA_MATCH) {
|
|
regstack_pop(&scan);
|
|
regstack.ga_len -= (int)sizeof(regstar_T);
|
|
break;
|
|
}
|
|
|
|
// Tried once already, restore input pointers.
|
|
if (status != RA_BREAK) {
|
|
reg_restore(&rp->rs_un.regsave, &backpos);
|
|
}
|
|
|
|
// Repeat until we found a position where it could match.
|
|
for (;;) {
|
|
if (status != RA_BREAK) {
|
|
// Tried first position already, advance.
|
|
if (rp->rs_state == RS_STAR_LONG) {
|
|
// Trying for longest match, but couldn't or
|
|
// didn't match -- back up one char.
|
|
if (--rst->count < rst->minval) {
|
|
break;
|
|
}
|
|
if (rex.input == rex.line) {
|
|
// backup to last char of previous line
|
|
if (rex.lnum == 0) {
|
|
status = RA_NOMATCH;
|
|
break;
|
|
}
|
|
rex.lnum--;
|
|
rex.line = (uint8_t *)reg_getline(rex.lnum);
|
|
// Just in case regrepeat() didn't count right.
|
|
if (rex.line == NULL) {
|
|
break;
|
|
}
|
|
rex.input = rex.line + strlen((char *)rex.line);
|
|
reg_breakcheck();
|
|
} else {
|
|
MB_PTR_BACK(rex.line, rex.input);
|
|
}
|
|
} else {
|
|
// Range is backwards, use shortest match first.
|
|
// Careful: maxval and minval are exchanged!
|
|
// Couldn't or didn't match: try advancing one
|
|
// char.
|
|
if (rst->count == rst->minval
|
|
|| regrepeat(OPERAND(rp->rs_scan), 1L) == 0) {
|
|
break;
|
|
}
|
|
rst->count++;
|
|
}
|
|
if (got_int) {
|
|
break;
|
|
}
|
|
} else {
|
|
status = RA_NOMATCH;
|
|
}
|
|
|
|
// If it could match, try it.
|
|
if (rst->nextb == NUL || *rex.input == rst->nextb
|
|
|| *rex.input == rst->nextb_ic) {
|
|
reg_save(&rp->rs_un.regsave, &backpos);
|
|
scan = regnext(rp->rs_scan);
|
|
status = RA_CONT;
|
|
break;
|
|
}
|
|
}
|
|
if (status != RA_CONT) {
|
|
// Failed.
|
|
regstack_pop(&scan);
|
|
regstack.ga_len -= (int)sizeof(regstar_T);
|
|
status = RA_NOMATCH;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
// If we want to continue the inner loop or didn't pop a state
|
|
// continue matching loop
|
|
if (status == RA_CONT || rp == (regitem_T *)
|
|
((char *)regstack.ga_data + regstack.ga_len) - 1) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// May need to continue with the inner loop, starting at "scan".
|
|
if (status == RA_CONT) {
|
|
continue;
|
|
}
|
|
|
|
// If the regstack is empty or something failed we are done.
|
|
if (GA_EMPTY(®stack) || status == RA_FAIL) {
|
|
if (scan == NULL) {
|
|
// We get here only if there's trouble -- normally "case END" is
|
|
// the terminating point.
|
|
iemsg(_(e_re_corr));
|
|
#ifdef REGEXP_DEBUG
|
|
printf("Premature EOL\n");
|
|
#endif
|
|
}
|
|
return status == RA_MATCH;
|
|
}
|
|
} // End of loop until the regstack is empty.
|
|
|
|
// NOTREACHED
|
|
}
|
|
|
|
/// Try match of "prog" with at rex.line["col"].
|
|
///
|
|
/// @param tm timeout limit or NULL
|
|
/// @param timed_out flag set on timeout or NULL
|
|
///
|
|
/// @return 0 for failure, or number of lines contained in the match.
|
|
static long regtry(bt_regprog_T *prog, colnr_T col, proftime_T *tm, int *timed_out)
|
|
{
|
|
rex.input = rex.line + col;
|
|
rex.need_clear_subexpr = true;
|
|
// Clear the external match subpointers if necessaey.
|
|
rex.need_clear_zsubexpr = (prog->reghasz == REX_SET);
|
|
|
|
if (regmatch(prog->program + 1, tm, timed_out) == 0) {
|
|
return 0;
|
|
}
|
|
|
|
cleanup_subexpr();
|
|
if (REG_MULTI) {
|
|
if (rex.reg_startpos[0].lnum < 0) {
|
|
rex.reg_startpos[0].lnum = 0;
|
|
rex.reg_startpos[0].col = col;
|
|
}
|
|
if (rex.reg_endpos[0].lnum < 0) {
|
|
rex.reg_endpos[0].lnum = rex.lnum;
|
|
rex.reg_endpos[0].col = (int)(rex.input - rex.line);
|
|
} else {
|
|
// Use line number of "\ze".
|
|
rex.lnum = rex.reg_endpos[0].lnum;
|
|
}
|
|
} else {
|
|
if (rex.reg_startp[0] == NULL) {
|
|
rex.reg_startp[0] = rex.line + col;
|
|
}
|
|
if (rex.reg_endp[0] == NULL) {
|
|
rex.reg_endp[0] = rex.input;
|
|
}
|
|
}
|
|
// Package any found \z(...\) matches for export. Default is none.
|
|
unref_extmatch(re_extmatch_out);
|
|
re_extmatch_out = NULL;
|
|
|
|
if (prog->reghasz == REX_SET) {
|
|
int i;
|
|
|
|
cleanup_zsubexpr();
|
|
re_extmatch_out = make_extmatch();
|
|
for (i = 0; i < NSUBEXP; i++) {
|
|
if (REG_MULTI) {
|
|
// Only accept single line matches.
|
|
if (reg_startzpos[i].lnum >= 0
|
|
&& reg_endzpos[i].lnum == reg_startzpos[i].lnum
|
|
&& reg_endzpos[i].col >= reg_startzpos[i].col) {
|
|
re_extmatch_out->matches[i] =
|
|
(uint8_t *)xstrnsave((char *)reg_getline(reg_startzpos[i].lnum) + reg_startzpos[i].col,
|
|
(size_t)(reg_endzpos[i].col - reg_startzpos[i].col));
|
|
}
|
|
} else {
|
|
if (reg_startzp[i] != NULL && reg_endzp[i] != NULL) {
|
|
re_extmatch_out->matches[i] =
|
|
(uint8_t *)xstrnsave((char *)reg_startzp[i], (size_t)(reg_endzp[i] - reg_startzp[i]));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return 1 + rex.lnum;
|
|
}
|
|
|
|
/// Match a regexp against a string ("line" points to the string) or multiple
|
|
/// lines (if "line" is NULL, use reg_getline()).
|
|
///
|
|
/// @param startcol column to start looking for match
|
|
/// @param tm timeout limit or NULL
|
|
/// @param timed_out flag set on timeout or NULL
|
|
///
|
|
/// @return 0 for failure, or number of lines contained in the match.
|
|
static long bt_regexec_both(uint8_t *line, colnr_T startcol, proftime_T *tm, int *timed_out)
|
|
{
|
|
bt_regprog_T *prog;
|
|
uint8_t *s;
|
|
colnr_T col = startcol;
|
|
long retval = 0L;
|
|
|
|
// Create "regstack" and "backpos" if they are not allocated yet.
|
|
// We allocate *_INITIAL amount of bytes first and then set the grow size
|
|
// to much bigger value to avoid many malloc calls in case of deep regular
|
|
// expressions.
|
|
if (regstack.ga_data == NULL) {
|
|
// Use an item size of 1 byte, since we push different things
|
|
// onto the regstack.
|
|
ga_init(®stack, 1, REGSTACK_INITIAL);
|
|
ga_grow(®stack, REGSTACK_INITIAL);
|
|
ga_set_growsize(®stack, REGSTACK_INITIAL * 8);
|
|
}
|
|
|
|
if (backpos.ga_data == NULL) {
|
|
ga_init(&backpos, sizeof(backpos_T), BACKPOS_INITIAL);
|
|
ga_grow(&backpos, BACKPOS_INITIAL);
|
|
ga_set_growsize(&backpos, BACKPOS_INITIAL * 8);
|
|
}
|
|
|
|
if (REG_MULTI) {
|
|
prog = (bt_regprog_T *)rex.reg_mmatch->regprog;
|
|
line = (uint8_t *)reg_getline((linenr_T)0);
|
|
rex.reg_startpos = rex.reg_mmatch->startpos;
|
|
rex.reg_endpos = rex.reg_mmatch->endpos;
|
|
} else {
|
|
prog = (bt_regprog_T *)rex.reg_match->regprog;
|
|
rex.reg_startp = (uint8_t **)rex.reg_match->startp;
|
|
rex.reg_endp = (uint8_t **)rex.reg_match->endp;
|
|
}
|
|
|
|
// Be paranoid...
|
|
if (prog == NULL || line == NULL) {
|
|
iemsg(_(e_null));
|
|
goto theend;
|
|
}
|
|
|
|
// Check validity of program.
|
|
if (prog_magic_wrong()) {
|
|
goto theend;
|
|
}
|
|
|
|
// If the start column is past the maximum column: no need to try.
|
|
if (rex.reg_maxcol > 0 && col >= rex.reg_maxcol) {
|
|
goto theend;
|
|
}
|
|
|
|
// If pattern contains "\c" or "\C": overrule value of rex.reg_ic
|
|
if (prog->regflags & RF_ICASE) {
|
|
rex.reg_ic = true;
|
|
} else if (prog->regflags & RF_NOICASE) {
|
|
rex.reg_ic = false;
|
|
}
|
|
|
|
// If pattern contains "\Z" overrule value of rex.reg_icombine
|
|
if (prog->regflags & RF_ICOMBINE) {
|
|
rex.reg_icombine = true;
|
|
}
|
|
|
|
// If there is a "must appear" string, look for it.
|
|
if (prog->regmust != NULL) {
|
|
int c = utf_ptr2char((char *)prog->regmust);
|
|
s = line + col;
|
|
|
|
// This is used very often, esp. for ":global". Use two versions of
|
|
// the loop to avoid overhead of conditions.
|
|
if (!rex.reg_ic) {
|
|
while ((s = (uint8_t *)vim_strchr((char *)s, c)) != NULL) {
|
|
if (cstrncmp((char *)s, (char *)prog->regmust, &prog->regmlen) == 0) {
|
|
break; // Found it.
|
|
}
|
|
MB_PTR_ADV(s);
|
|
}
|
|
} else {
|
|
while ((s = (uint8_t *)cstrchr((char *)s, c)) != NULL) {
|
|
if (cstrncmp((char *)s, (char *)prog->regmust, &prog->regmlen) == 0) {
|
|
break; // Found it.
|
|
}
|
|
MB_PTR_ADV(s);
|
|
}
|
|
}
|
|
if (s == NULL) { // Not present.
|
|
goto theend;
|
|
}
|
|
}
|
|
|
|
rex.line = line;
|
|
rex.lnum = 0;
|
|
reg_toolong = false;
|
|
|
|
// Simplest case: Anchored match need be tried only once.
|
|
if (prog->reganch) {
|
|
int c = utf_ptr2char((char *)rex.line + col);
|
|
if (prog->regstart == NUL
|
|
|| prog->regstart == c
|
|
|| (rex.reg_ic
|
|
&& (utf_fold(prog->regstart) == utf_fold(c)
|
|
|| (c < 255 && prog->regstart < 255
|
|
&& mb_tolower(prog->regstart) == mb_tolower(c))))) {
|
|
retval = regtry(prog, col, tm, timed_out);
|
|
} else {
|
|
retval = 0;
|
|
}
|
|
} else {
|
|
int tm_count = 0;
|
|
// Messy cases: unanchored match.
|
|
while (!got_int) {
|
|
if (prog->regstart != NUL) {
|
|
// Skip until the char we know it must start with.
|
|
s = (uint8_t *)cstrchr((char *)rex.line + col, prog->regstart);
|
|
if (s == NULL) {
|
|
retval = 0;
|
|
break;
|
|
}
|
|
col = (int)(s - rex.line);
|
|
}
|
|
|
|
// Check for maximum column to try.
|
|
if (rex.reg_maxcol > 0 && col >= rex.reg_maxcol) {
|
|
retval = 0;
|
|
break;
|
|
}
|
|
|
|
retval = regtry(prog, col, tm, timed_out);
|
|
if (retval > 0) {
|
|
break;
|
|
}
|
|
|
|
// if not currently on the first line, get it again
|
|
if (rex.lnum != 0) {
|
|
rex.lnum = 0;
|
|
rex.line = (uint8_t *)reg_getline((linenr_T)0);
|
|
}
|
|
if (rex.line[col] == NUL) {
|
|
break;
|
|
}
|
|
col += utfc_ptr2len((char *)rex.line + col);
|
|
// Check for timeout once in a twenty times to avoid overhead.
|
|
if (tm != NULL && ++tm_count == 20) {
|
|
tm_count = 0;
|
|
if (profile_passed_limit(*tm)) {
|
|
if (timed_out != NULL) {
|
|
*timed_out = true;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
theend:
|
|
// Free "reg_tofree" when it's a bit big.
|
|
// Free regstack and backpos if they are bigger than their initial size.
|
|
if (reg_tofreelen > 400) {
|
|
XFREE_CLEAR(reg_tofree);
|
|
}
|
|
if (regstack.ga_maxlen > REGSTACK_INITIAL) {
|
|
ga_clear(®stack);
|
|
}
|
|
if (backpos.ga_maxlen > BACKPOS_INITIAL) {
|
|
ga_clear(&backpos);
|
|
}
|
|
|
|
if (retval > 0) {
|
|
// Make sure the end is never before the start. Can happen when \zs
|
|
// and \ze are used.
|
|
if (REG_MULTI) {
|
|
const lpos_T *const start = &rex.reg_mmatch->startpos[0];
|
|
const lpos_T *const end = &rex.reg_mmatch->endpos[0];
|
|
|
|
if (end->lnum < start->lnum
|
|
|| (end->lnum == start->lnum && end->col < start->col)) {
|
|
rex.reg_mmatch->endpos[0] = rex.reg_mmatch->startpos[0];
|
|
}
|
|
|
|
// startpos[0] may be set by "\zs", also return the column where
|
|
// the whole pattern matched.
|
|
rex.reg_mmatch->rmm_matchcol = col;
|
|
} else {
|
|
if (rex.reg_match->endp[0] < rex.reg_match->startp[0]) {
|
|
rex.reg_match->endp[0] = rex.reg_match->startp[0];
|
|
}
|
|
|
|
// startpos[0] may be set by "\zs", also return the column where
|
|
// the whole pattern matched.
|
|
rex.reg_match->rm_matchcol = col;
|
|
}
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
/// Match a regexp against a string.
|
|
/// "rmp->regprog" is a compiled regexp as returned by vim_regcomp().
|
|
/// Uses curbuf for line count and 'iskeyword'.
|
|
/// If "line_lbr" is true, consider a "\n" in "line" to be a line break.
|
|
///
|
|
/// @param line string to match against
|
|
/// @param col column to start looking for match
|
|
///
|
|
/// @return 0 for failure, number of lines contained in the match otherwise.
|
|
static int bt_regexec_nl(regmatch_T *rmp, uint8_t *line, colnr_T col, bool line_lbr)
|
|
{
|
|
rex.reg_match = rmp;
|
|
rex.reg_mmatch = NULL;
|
|
rex.reg_maxline = 0;
|
|
rex.reg_line_lbr = line_lbr;
|
|
rex.reg_buf = curbuf;
|
|
rex.reg_win = NULL;
|
|
rex.reg_ic = rmp->rm_ic;
|
|
rex.reg_icombine = false;
|
|
rex.reg_nobreak = rmp->regprog->re_flags & RE_NOBREAK;
|
|
rex.reg_maxcol = 0;
|
|
|
|
long r = bt_regexec_both(line, col, NULL, NULL);
|
|
assert(r <= INT_MAX);
|
|
return (int)r;
|
|
}
|
|
|
|
/// Matches a regexp against multiple lines.
|
|
/// "rmp->regprog" is a compiled regexp as returned by vim_regcomp().
|
|
/// Uses curbuf for line count and 'iskeyword'.
|
|
///
|
|
/// @param win Window in which to search or NULL
|
|
/// @param buf Buffer in which to search
|
|
/// @param lnum Number of line to start looking for match
|
|
/// @param col Column to start looking for match
|
|
/// @param tm Timeout limit or NULL
|
|
///
|
|
/// @return zero if there is no match and number of lines contained in the match
|
|
/// otherwise.
|
|
static long bt_regexec_multi(regmmatch_T *rmp, win_T *win, buf_T *buf, linenr_T lnum, colnr_T col,
|
|
proftime_T *tm, int *timed_out)
|
|
{
|
|
init_regexec_multi(rmp, win, buf, lnum);
|
|
return bt_regexec_both(NULL, col, tm, timed_out);
|
|
}
|
|
|
|
// Compare a number with the operand of RE_LNUM, RE_COL or RE_VCOL.
|
|
static int re_num_cmp(uint32_t val, uint8_t *scan)
|
|
{
|
|
uint32_t n = (uint32_t)OPERAND_MIN(scan);
|
|
|
|
if (OPERAND_CMP(scan) == '>') {
|
|
return val > n;
|
|
}
|
|
if (OPERAND_CMP(scan) == '<') {
|
|
return val < n;
|
|
}
|
|
return val == n;
|
|
}
|
|
|
|
#ifdef BT_REGEXP_DUMP
|
|
|
|
// regdump - dump a regexp onto stdout in vaguely comprehensible form
|
|
static void regdump(uint8_t *pattern, bt_regprog_T *r)
|
|
{
|
|
uint8_t *s;
|
|
int op = EXACTLY; // Arbitrary non-END op.
|
|
uint8_t *next;
|
|
uint8_t *end = NULL;
|
|
FILE *f;
|
|
|
|
# ifdef BT_REGEXP_LOG
|
|
f = fopen("bt_regexp_log.log", "a");
|
|
# else
|
|
f = stdout;
|
|
# endif
|
|
if (f == NULL) {
|
|
return;
|
|
}
|
|
fprintf(f, "-------------------------------------\n\r\nregcomp(%s):\r\n",
|
|
pattern);
|
|
|
|
s = r->program + 1;
|
|
// Loop until we find the END that isn't before a referred next (an END
|
|
// can also appear in a NOMATCH operand).
|
|
while (op != END || s <= end) {
|
|
op = OP(s);
|
|
fprintf(f, "%2d%s", (int)(s - r->program), regprop(s)); // Where, what.
|
|
next = regnext(s);
|
|
if (next == NULL) { // Next ptr.
|
|
fprintf(f, "(0)");
|
|
} else {
|
|
fprintf(f, "(%d)", (int)((s - r->program) + (next - s)));
|
|
}
|
|
if (end < next) {
|
|
end = next;
|
|
}
|
|
if (op == BRACE_LIMITS) {
|
|
// Two ints
|
|
fprintf(f, " minval %" PRId64 ", maxval %" PRId64,
|
|
(int64_t)OPERAND_MIN(s), (int64_t)OPERAND_MAX(s));
|
|
s += 8;
|
|
} else if (op == BEHIND || op == NOBEHIND) {
|
|
// one int
|
|
fprintf(f, " count %" PRId64, (int64_t)OPERAND_MIN(s));
|
|
s += 4;
|
|
} else if (op == RE_LNUM || op == RE_COL || op == RE_VCOL) {
|
|
// one int plus comparator
|
|
fprintf(f, " count %" PRId64, (int64_t)OPERAND_MIN(s));
|
|
s += 5;
|
|
}
|
|
s += 3;
|
|
if (op == ANYOF || op == ANYOF + ADD_NL
|
|
|| op == ANYBUT || op == ANYBUT + ADD_NL
|
|
|| op == EXACTLY) {
|
|
// Literal string, where present.
|
|
fprintf(f, "\nxxxxxxxxx\n");
|
|
while (*s != NUL) {
|
|
fprintf(f, "%c", *s++);
|
|
}
|
|
fprintf(f, "\nxxxxxxxxx\n");
|
|
s++;
|
|
}
|
|
fprintf(f, "\r\n");
|
|
}
|
|
|
|
// Header fields of interest.
|
|
if (r->regstart != NUL) {
|
|
fprintf(f, "start `%s' 0x%x; ", r->regstart < 256
|
|
? (char *)transchar(r->regstart)
|
|
: "multibyte", r->regstart);
|
|
}
|
|
if (r->reganch) {
|
|
fprintf(f, "anchored; ");
|
|
}
|
|
if (r->regmust != NULL) {
|
|
fprintf(f, "must have \"%s\"", r->regmust);
|
|
}
|
|
fprintf(f, "\r\n");
|
|
|
|
# ifdef BT_REGEXP_LOG
|
|
fclose(f);
|
|
# endif
|
|
}
|
|
#endif // BT_REGEXP_DUMP
|
|
|
|
#ifdef REGEXP_DEBUG
|
|
|
|
// regprop - printable representation of opcode
|
|
static uint8_t *regprop(uint8_t *op)
|
|
{
|
|
char *p;
|
|
static char buf[50];
|
|
|
|
STRCPY(buf, ":");
|
|
|
|
switch ((int)OP(op)) {
|
|
case BOL:
|
|
p = "BOL";
|
|
break;
|
|
case EOL:
|
|
p = "EOL";
|
|
break;
|
|
case RE_BOF:
|
|
p = "BOF";
|
|
break;
|
|
case RE_EOF:
|
|
p = "EOF";
|
|
break;
|
|
case CURSOR:
|
|
p = "CURSOR";
|
|
break;
|
|
case RE_VISUAL:
|
|
p = "RE_VISUAL";
|
|
break;
|
|
case RE_LNUM:
|
|
p = "RE_LNUM";
|
|
break;
|
|
case RE_MARK:
|
|
p = "RE_MARK";
|
|
break;
|
|
case RE_COL:
|
|
p = "RE_COL";
|
|
break;
|
|
case RE_VCOL:
|
|
p = "RE_VCOL";
|
|
break;
|
|
case BOW:
|
|
p = "BOW";
|
|
break;
|
|
case EOW:
|
|
p = "EOW";
|
|
break;
|
|
case ANY:
|
|
p = "ANY";
|
|
break;
|
|
case ANY + ADD_NL:
|
|
p = "ANY+NL";
|
|
break;
|
|
case ANYOF:
|
|
p = "ANYOF";
|
|
break;
|
|
case ANYOF + ADD_NL:
|
|
p = "ANYOF+NL";
|
|
break;
|
|
case ANYBUT:
|
|
p = "ANYBUT";
|
|
break;
|
|
case ANYBUT + ADD_NL:
|
|
p = "ANYBUT+NL";
|
|
break;
|
|
case IDENT:
|
|
p = "IDENT";
|
|
break;
|
|
case IDENT + ADD_NL:
|
|
p = "IDENT+NL";
|
|
break;
|
|
case SIDENT:
|
|
p = "SIDENT";
|
|
break;
|
|
case SIDENT + ADD_NL:
|
|
p = "SIDENT+NL";
|
|
break;
|
|
case KWORD:
|
|
p = "KWORD";
|
|
break;
|
|
case KWORD + ADD_NL:
|
|
p = "KWORD+NL";
|
|
break;
|
|
case SKWORD:
|
|
p = "SKWORD";
|
|
break;
|
|
case SKWORD + ADD_NL:
|
|
p = "SKWORD+NL";
|
|
break;
|
|
case FNAME:
|
|
p = "FNAME";
|
|
break;
|
|
case FNAME + ADD_NL:
|
|
p = "FNAME+NL";
|
|
break;
|
|
case SFNAME:
|
|
p = "SFNAME";
|
|
break;
|
|
case SFNAME + ADD_NL:
|
|
p = "SFNAME+NL";
|
|
break;
|
|
case PRINT:
|
|
p = "PRINT";
|
|
break;
|
|
case PRINT + ADD_NL:
|
|
p = "PRINT+NL";
|
|
break;
|
|
case SPRINT:
|
|
p = "SPRINT";
|
|
break;
|
|
case SPRINT + ADD_NL:
|
|
p = "SPRINT+NL";
|
|
break;
|
|
case WHITE:
|
|
p = "WHITE";
|
|
break;
|
|
case WHITE + ADD_NL:
|
|
p = "WHITE+NL";
|
|
break;
|
|
case NWHITE:
|
|
p = "NWHITE";
|
|
break;
|
|
case NWHITE + ADD_NL:
|
|
p = "NWHITE+NL";
|
|
break;
|
|
case DIGIT:
|
|
p = "DIGIT";
|
|
break;
|
|
case DIGIT + ADD_NL:
|
|
p = "DIGIT+NL";
|
|
break;
|
|
case NDIGIT:
|
|
p = "NDIGIT";
|
|
break;
|
|
case NDIGIT + ADD_NL:
|
|
p = "NDIGIT+NL";
|
|
break;
|
|
case HEX:
|
|
p = "HEX";
|
|
break;
|
|
case HEX + ADD_NL:
|
|
p = "HEX+NL";
|
|
break;
|
|
case NHEX:
|
|
p = "NHEX";
|
|
break;
|
|
case NHEX + ADD_NL:
|
|
p = "NHEX+NL";
|
|
break;
|
|
case OCTAL:
|
|
p = "OCTAL";
|
|
break;
|
|
case OCTAL + ADD_NL:
|
|
p = "OCTAL+NL";
|
|
break;
|
|
case NOCTAL:
|
|
p = "NOCTAL";
|
|
break;
|
|
case NOCTAL + ADD_NL:
|
|
p = "NOCTAL+NL";
|
|
break;
|
|
case WORD:
|
|
p = "WORD";
|
|
break;
|
|
case WORD + ADD_NL:
|
|
p = "WORD+NL";
|
|
break;
|
|
case NWORD:
|
|
p = "NWORD";
|
|
break;
|
|
case NWORD + ADD_NL:
|
|
p = "NWORD+NL";
|
|
break;
|
|
case HEAD:
|
|
p = "HEAD";
|
|
break;
|
|
case HEAD + ADD_NL:
|
|
p = "HEAD+NL";
|
|
break;
|
|
case NHEAD:
|
|
p = "NHEAD";
|
|
break;
|
|
case NHEAD + ADD_NL:
|
|
p = "NHEAD+NL";
|
|
break;
|
|
case ALPHA:
|
|
p = "ALPHA";
|
|
break;
|
|
case ALPHA + ADD_NL:
|
|
p = "ALPHA+NL";
|
|
break;
|
|
case NALPHA:
|
|
p = "NALPHA";
|
|
break;
|
|
case NALPHA + ADD_NL:
|
|
p = "NALPHA+NL";
|
|
break;
|
|
case LOWER:
|
|
p = "LOWER";
|
|
break;
|
|
case LOWER + ADD_NL:
|
|
p = "LOWER+NL";
|
|
break;
|
|
case NLOWER:
|
|
p = "NLOWER";
|
|
break;
|
|
case NLOWER + ADD_NL:
|
|
p = "NLOWER+NL";
|
|
break;
|
|
case UPPER:
|
|
p = "UPPER";
|
|
break;
|
|
case UPPER + ADD_NL:
|
|
p = "UPPER+NL";
|
|
break;
|
|
case NUPPER:
|
|
p = "NUPPER";
|
|
break;
|
|
case NUPPER + ADD_NL:
|
|
p = "NUPPER+NL";
|
|
break;
|
|
case BRANCH:
|
|
p = "BRANCH";
|
|
break;
|
|
case EXACTLY:
|
|
p = "EXACTLY";
|
|
break;
|
|
case NOTHING:
|
|
p = "NOTHING";
|
|
break;
|
|
case BACK:
|
|
p = "BACK";
|
|
break;
|
|
case END:
|
|
p = "END";
|
|
break;
|
|
case MOPEN + 0:
|
|
p = "MATCH START";
|
|
break;
|
|
case MOPEN + 1:
|
|
case MOPEN + 2:
|
|
case MOPEN + 3:
|
|
case MOPEN + 4:
|
|
case MOPEN + 5:
|
|
case MOPEN + 6:
|
|
case MOPEN + 7:
|
|
case MOPEN + 8:
|
|
case MOPEN + 9:
|
|
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "MOPEN%d", OP(op) - MOPEN);
|
|
p = NULL;
|
|
break;
|
|
case MCLOSE + 0:
|
|
p = "MATCH END";
|
|
break;
|
|
case MCLOSE + 1:
|
|
case MCLOSE + 2:
|
|
case MCLOSE + 3:
|
|
case MCLOSE + 4:
|
|
case MCLOSE + 5:
|
|
case MCLOSE + 6:
|
|
case MCLOSE + 7:
|
|
case MCLOSE + 8:
|
|
case MCLOSE + 9:
|
|
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "MCLOSE%d", OP(op) - MCLOSE);
|
|
p = NULL;
|
|
break;
|
|
case BACKREF + 1:
|
|
case BACKREF + 2:
|
|
case BACKREF + 3:
|
|
case BACKREF + 4:
|
|
case BACKREF + 5:
|
|
case BACKREF + 6:
|
|
case BACKREF + 7:
|
|
case BACKREF + 8:
|
|
case BACKREF + 9:
|
|
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "BACKREF%d", OP(op) - BACKREF);
|
|
p = NULL;
|
|
break;
|
|
case NOPEN:
|
|
p = "NOPEN";
|
|
break;
|
|
case NCLOSE:
|
|
p = "NCLOSE";
|
|
break;
|
|
case ZOPEN + 1:
|
|
case ZOPEN + 2:
|
|
case ZOPEN + 3:
|
|
case ZOPEN + 4:
|
|
case ZOPEN + 5:
|
|
case ZOPEN + 6:
|
|
case ZOPEN + 7:
|
|
case ZOPEN + 8:
|
|
case ZOPEN + 9:
|
|
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "ZOPEN%d", OP(op) - ZOPEN);
|
|
p = NULL;
|
|
break;
|
|
case ZCLOSE + 1:
|
|
case ZCLOSE + 2:
|
|
case ZCLOSE + 3:
|
|
case ZCLOSE + 4:
|
|
case ZCLOSE + 5:
|
|
case ZCLOSE + 6:
|
|
case ZCLOSE + 7:
|
|
case ZCLOSE + 8:
|
|
case ZCLOSE + 9:
|
|
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "ZCLOSE%d", OP(op) - ZCLOSE);
|
|
p = NULL;
|
|
break;
|
|
case ZREF + 1:
|
|
case ZREF + 2:
|
|
case ZREF + 3:
|
|
case ZREF + 4:
|
|
case ZREF + 5:
|
|
case ZREF + 6:
|
|
case ZREF + 7:
|
|
case ZREF + 8:
|
|
case ZREF + 9:
|
|
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "ZREF%d", OP(op) - ZREF);
|
|
p = NULL;
|
|
break;
|
|
case STAR:
|
|
p = "STAR";
|
|
break;
|
|
case PLUS:
|
|
p = "PLUS";
|
|
break;
|
|
case NOMATCH:
|
|
p = "NOMATCH";
|
|
break;
|
|
case MATCH:
|
|
p = "MATCH";
|
|
break;
|
|
case BEHIND:
|
|
p = "BEHIND";
|
|
break;
|
|
case NOBEHIND:
|
|
p = "NOBEHIND";
|
|
break;
|
|
case SUBPAT:
|
|
p = "SUBPAT";
|
|
break;
|
|
case BRACE_LIMITS:
|
|
p = "BRACE_LIMITS";
|
|
break;
|
|
case BRACE_SIMPLE:
|
|
p = "BRACE_SIMPLE";
|
|
break;
|
|
case BRACE_COMPLEX + 0:
|
|
case BRACE_COMPLEX + 1:
|
|
case BRACE_COMPLEX + 2:
|
|
case BRACE_COMPLEX + 3:
|
|
case BRACE_COMPLEX + 4:
|
|
case BRACE_COMPLEX + 5:
|
|
case BRACE_COMPLEX + 6:
|
|
case BRACE_COMPLEX + 7:
|
|
case BRACE_COMPLEX + 8:
|
|
case BRACE_COMPLEX + 9:
|
|
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "BRACE_COMPLEX%d",
|
|
OP(op) - BRACE_COMPLEX);
|
|
p = NULL;
|
|
break;
|
|
case MULTIBYTECODE:
|
|
p = "MULTIBYTECODE";
|
|
break;
|
|
case NEWL:
|
|
p = "NEWL";
|
|
break;
|
|
default:
|
|
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "corrupt %d", OP(op));
|
|
p = NULL;
|
|
break;
|
|
}
|
|
if (p != NULL) {
|
|
STRCAT(buf, p);
|
|
}
|
|
return (uint8_t *)buf;
|
|
}
|
|
#endif // REGEXP_DEBUG
|