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vimlparser.vim
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" vim:set ts=8 sts=2 sw=2 tw=0 et:
"
" VimL parser - Vim Script Parser
"
" License: This file is placed in the public domain.
function! vimlparser#import() abort
return s:
endfunction
" @brief Read input as VimScript and return stringified AST.
" @param input Input filename or string of VimScript.
" @return Stringified AST.
function! vimlparser#test(input, ...) abort
try
if a:0 > 0
let l:neovim = a:1
else
let l:neovim = 0
endif
let i = type(a:input) ==# 1 && filereadable(a:input) ? readfile(a:input) : split(a:input, "\n")
let r = s:StringReader.new(i)
let p = s:VimLParser.new(l:neovim)
let c = s:Compiler.new()
echo join(c.compile(p.parse(r)), "\n")
catch
echoerr substitute(v:throwpoint, '\.\.\zs\d\+', '\=s:numtoname(submatch(0))', 'g') . "\n" . v:exception
endtry
endfunction
function! s:numtoname(num) abort
let sig = printf("function('%s')", a:num)
for k in keys(s:)
if type(s:[k]) ==# type({})
for name in keys(s:[k])
if type(s:[k][name]) ==# type(function('tr')) && string(s:[k][name]) ==# sig
return printf('%s.%s', k, name)
endif
endfor
endif
endfor
return a:num
endfunction
let s:NIL = []
let s:TRUE = 1
let s:FALSE = 0
let s:NODE_TOPLEVEL = 1
let s:NODE_COMMENT = 2
let s:NODE_EXCMD = 3
let s:NODE_FUNCTION = 4
let s:NODE_ENDFUNCTION = 5
let s:NODE_DELFUNCTION = 6
let s:NODE_RETURN = 7
let s:NODE_EXCALL = 8
let s:NODE_LET = 9
let s:NODE_UNLET = 10
let s:NODE_LOCKVAR = 11
let s:NODE_UNLOCKVAR = 12
let s:NODE_IF = 13
let s:NODE_ELSEIF = 14
let s:NODE_ELSE = 15
let s:NODE_ENDIF = 16
let s:NODE_WHILE = 17
let s:NODE_ENDWHILE = 18
let s:NODE_FOR = 19
let s:NODE_ENDFOR = 20
let s:NODE_CONTINUE = 21
let s:NODE_BREAK = 22
let s:NODE_TRY = 23
let s:NODE_CATCH = 24
let s:NODE_FINALLY = 25
let s:NODE_ENDTRY = 26
let s:NODE_THROW = 27
let s:NODE_ECHO = 28
let s:NODE_ECHON = 29
let s:NODE_ECHOHL = 30
let s:NODE_ECHOMSG = 31
let s:NODE_ECHOERR = 32
let s:NODE_EXECUTE = 33
let s:NODE_TERNARY = 34
let s:NODE_OR = 35
let s:NODE_AND = 36
let s:NODE_EQUAL = 37
let s:NODE_EQUALCI = 38
let s:NODE_EQUALCS = 39
let s:NODE_NEQUAL = 40
let s:NODE_NEQUALCI = 41
let s:NODE_NEQUALCS = 42
let s:NODE_GREATER = 43
let s:NODE_GREATERCI = 44
let s:NODE_GREATERCS = 45
let s:NODE_GEQUAL = 46
let s:NODE_GEQUALCI = 47
let s:NODE_GEQUALCS = 48
let s:NODE_SMALLER = 49
let s:NODE_SMALLERCI = 50
let s:NODE_SMALLERCS = 51
let s:NODE_SEQUAL = 52
let s:NODE_SEQUALCI = 53
let s:NODE_SEQUALCS = 54
let s:NODE_MATCH = 55
let s:NODE_MATCHCI = 56
let s:NODE_MATCHCS = 57
let s:NODE_NOMATCH = 58
let s:NODE_NOMATCHCI = 59
let s:NODE_NOMATCHCS = 60
let s:NODE_IS = 61
let s:NODE_ISCI = 62
let s:NODE_ISCS = 63
let s:NODE_ISNOT = 64
let s:NODE_ISNOTCI = 65
let s:NODE_ISNOTCS = 66
let s:NODE_ADD = 67
let s:NODE_SUBTRACT = 68
let s:NODE_CONCAT = 69
let s:NODE_MULTIPLY = 70
let s:NODE_DIVIDE = 71
let s:NODE_REMAINDER = 72
let s:NODE_NOT = 73
let s:NODE_MINUS = 74
let s:NODE_PLUS = 75
let s:NODE_SUBSCRIPT = 76
let s:NODE_SLICE = 77
let s:NODE_CALL = 78
let s:NODE_DOT = 79
let s:NODE_NUMBER = 80
let s:NODE_STRING = 81
let s:NODE_LIST = 82
let s:NODE_DICT = 83
let s:NODE_OPTION = 85
let s:NODE_IDENTIFIER = 86
let s:NODE_CURLYNAME = 87
let s:NODE_ENV = 88
let s:NODE_REG = 89
let s:NODE_CURLYNAMEPART = 90
let s:NODE_CURLYNAMEEXPR = 91
let s:NODE_LAMBDA = 92
let s:NODE_BLOB = 93
let s:NODE_CONST = 94
let s:NODE_EVAL = 95
let s:NODE_HEREDOC = 96
let s:NODE_METHOD = 97
let s:NODE_ECHOCONSOLE = 98
let s:NODE_ECHOWINDOW = 99
let s:TOKEN_EOF = 1
let s:TOKEN_EOL = 2
let s:TOKEN_SPACE = 3
let s:TOKEN_OROR = 4
let s:TOKEN_ANDAND = 5
let s:TOKEN_EQEQ = 6
let s:TOKEN_EQEQCI = 7
let s:TOKEN_EQEQCS = 8
let s:TOKEN_NEQ = 9
let s:TOKEN_NEQCI = 10
let s:TOKEN_NEQCS = 11
let s:TOKEN_GT = 12
let s:TOKEN_GTCI = 13
let s:TOKEN_GTCS = 14
let s:TOKEN_GTEQ = 15
let s:TOKEN_GTEQCI = 16
let s:TOKEN_GTEQCS = 17
let s:TOKEN_LT = 18
let s:TOKEN_LTCI = 19
let s:TOKEN_LTCS = 20
let s:TOKEN_LTEQ = 21
let s:TOKEN_LTEQCI = 22
let s:TOKEN_LTEQCS = 23
let s:TOKEN_MATCH = 24
let s:TOKEN_MATCHCI = 25
let s:TOKEN_MATCHCS = 26
let s:TOKEN_NOMATCH = 27
let s:TOKEN_NOMATCHCI = 28
let s:TOKEN_NOMATCHCS = 29
let s:TOKEN_IS = 30
let s:TOKEN_ISCI = 31
let s:TOKEN_ISCS = 32
let s:TOKEN_ISNOT = 33
let s:TOKEN_ISNOTCI = 34
let s:TOKEN_ISNOTCS = 35
let s:TOKEN_PLUS = 36
let s:TOKEN_MINUS = 37
let s:TOKEN_DOT = 38
let s:TOKEN_STAR = 39
let s:TOKEN_SLASH = 40
let s:TOKEN_PERCENT = 41
let s:TOKEN_NOT = 42
let s:TOKEN_QUESTION = 43
let s:TOKEN_COLON = 44
let s:TOKEN_POPEN = 45
let s:TOKEN_PCLOSE = 46
let s:TOKEN_SQOPEN = 47
let s:TOKEN_SQCLOSE = 48
let s:TOKEN_COPEN = 49
let s:TOKEN_CCLOSE = 50
let s:TOKEN_COMMA = 51
let s:TOKEN_NUMBER = 52
let s:TOKEN_SQUOTE = 53
let s:TOKEN_DQUOTE = 54
let s:TOKEN_OPTION = 55
let s:TOKEN_IDENTIFIER = 56
let s:TOKEN_ENV = 57
let s:TOKEN_REG = 58
let s:TOKEN_EQ = 59
let s:TOKEN_OR = 60
let s:TOKEN_SEMICOLON = 61
let s:TOKEN_BACKTICK = 62
let s:TOKEN_DOTDOTDOT = 63
let s:TOKEN_SHARP = 64
let s:TOKEN_ARROW = 65
let s:TOKEN_BLOB = 66
let s:TOKEN_LITCOPEN = 67
let s:TOKEN_DOTDOT = 68
let s:TOKEN_HEREDOC = 69
let s:MAX_FUNC_ARGS = 20
function! s:isalpha(c) abort
return a:c =~# '^[A-Za-z]$'
endfunction
function! s:isalnum(c) abort
return a:c =~# '^[0-9A-Za-z]$'
endfunction
function! s:isdigit(c) abort
return a:c =~# '^[0-9]$'
endfunction
function! s:isodigit(c) abort
return a:c =~# '^[0-7]$'
endfunction
function! s:isxdigit(c) abort
return a:c =~# '^[0-9A-Fa-f]$'
endfunction
function! s:iswordc(c) abort
return a:c =~# '^[0-9A-Za-z_]$'
endfunction
function! s:iswordc1(c) abort
return a:c =~# '^[A-Za-z_]$'
endfunction
function! s:iswhite(c) abort
return a:c =~# '^[ \t]$'
endfunction
function! s:isnamec(c) abort
return a:c =~# '^[0-9A-Za-z_:#]$'
endfunction
function! s:isnamec1(c) abort
return a:c =~# '^[A-Za-z_]$'
endfunction
function! s:isargname(s) abort
return a:s =~# '^[A-Za-z_][0-9A-Za-z_]*$'
endfunction
function! s:isvarname(s) abort
return a:s =~# '^[vgslabwt]:$\|^\([vgslabwt]:\)\?[A-Za-z_][0-9A-Za-z_#]*$'
endfunction
" FIXME:
function! s:isidc(c) abort
return a:c =~# '^[0-9A-Za-z_]$'
endfunction
function! s:isupper(c) abort
return a:c =~# '^[A-Z]$'
endfunction
function! s:islower(c) abort
return a:c =~# '^[a-z]$'
endfunction
function! s:ExArg() abort
let ea = {}
let ea.forceit = s:FALSE
let ea.addr_count = 0
let ea.line1 = 0
let ea.line2 = 0
let ea.flags = 0
let ea.do_ecmd_cmd = ''
let ea.do_ecmd_lnum = 0
let ea.append = 0
let ea.usefilter = s:FALSE
let ea.amount = 0
let ea.regname = 0
let ea.force_bin = 0
let ea.read_edit = 0
let ea.force_ff = 0
let ea.force_enc = 0
let ea.bad_char = 0
let ea.linepos = {}
let ea.cmdpos = []
let ea.argpos = []
let ea.cmd = {}
let ea.modifiers = []
let ea.range = []
let ea.argopt = {}
let ea.argcmd = {}
return ea
endfunction
" struct node {
" int type
" pos pos
" node left
" node right
" node cond
" node rest
" node[] list
" node[] rlist
" node[] default_args
" node[] body
" string op
" string str
" int depth
" variant value
" }
" TOPLEVEL .body
" COMMENT .str
" EXCMD .ea .str
" FUNCTION .ea .body .left .rlist .default_args .attr .endfunction
" ENDFUNCTION .ea
" DELFUNCTION .ea .left
" RETURN .ea .left
" EXCALL .ea .left
" LET .ea .op .left .list .rest .right
" CONST .ea .op .left .list .rest .right
" UNLET .ea .list
" LOCKVAR .ea .depth .list
" UNLOCKVAR .ea .depth .list
" IF .ea .body .cond .elseif .else .endif
" ELSEIF .ea .body .cond
" ELSE .ea .body
" ENDIF .ea
" WHILE .ea .body .cond .endwhile
" ENDWHILE .ea
" FOR .ea .body .left .list .rest .right .endfor
" ENDFOR .ea
" CONTINUE .ea
" BREAK .ea
" TRY .ea .body .catch .finally .endtry
" CATCH .ea .body .pattern
" FINALLY .ea .body
" ENDTRY .ea
" THROW .ea .left
" EVAL .ea .left
" ECHO .ea .list
" ECHON .ea .list
" ECHOHL .ea .str
" ECHOMSG .ea .list
" ECHOERR .ea .list
" EXECUTE .ea .list
" TERNARY .cond .left .right
" OR .left .right
" AND .left .right
" EQUAL .left .right
" EQUALCI .left .right
" EQUALCS .left .right
" NEQUAL .left .right
" NEQUALCI .left .right
" NEQUALCS .left .right
" GREATER .left .right
" GREATERCI .left .right
" GREATERCS .left .right
" GEQUAL .left .right
" GEQUALCI .left .right
" GEQUALCS .left .right
" SMALLER .left .right
" SMALLERCI .left .right
" SMALLERCS .left .right
" SEQUAL .left .right
" SEQUALCI .left .right
" SEQUALCS .left .right
" MATCH .left .right
" MATCHCI .left .right
" MATCHCS .left .right
" NOMATCH .left .right
" NOMATCHCI .left .right
" NOMATCHCS .left .right
" IS .left .right
" ISCI .left .right
" ISCS .left .right
" ISNOT .left .right
" ISNOTCI .left .right
" ISNOTCS .left .right
" ADD .left .right
" SUBTRACT .left .right
" CONCAT .left .right
" MULTIPLY .left .right
" DIVIDE .left .right
" REMAINDER .left .right
" NOT .left
" MINUS .left
" PLUS .left
" SUBSCRIPT .left .right
" SLICE .left .rlist
" METHOD .left .right
" CALL .left .rlist
" DOT .left .right
" NUMBER .value
" STRING .value
" LIST .value
" DICT .value
" BLOB .value
" NESTING .left
" OPTION .value
" IDENTIFIER .value
" CURLYNAME .value
" ENV .value
" REG .value
" CURLYNAMEPART .value
" CURLYNAMEEXPR .value
" LAMBDA .rlist .left
" HEREDOC .rlist .op .body
function! s:Node(type) abort
return {'type': a:type}
endfunction
function! s:Err(msg, pos) abort
return printf('vimlparser: %s: line %d col %d', a:msg, a:pos.lnum, a:pos.col)
endfunction
let s:VimLParser = {}
function! s:VimLParser.new(...) abort
let obj = copy(self)
call call(obj.__init__, a:000, obj)
return obj
endfunction
function! s:VimLParser.__init__(...) abort
if len(a:000) > 0
let self.neovim = a:000[0]
else
let self.neovim = 0
endif
let self.find_command_cache = {}
endfunction
function! s:VimLParser.push_context(node) abort
call insert(self.context, a:node)
endfunction
function! s:VimLParser.pop_context() abort
call remove(self.context, 0)
endfunction
function! s:VimLParser.find_context(type) abort
let i = 0
for node in self.context
if node.type ==# a:type
return i
endif
let i += 1
endfor
return -1
endfunction
function! s:VimLParser.add_node(node) abort
call add(self.context[0].body, a:node)
endfunction
function! s:VimLParser.check_missing_endfunction(ends, pos) abort
if self.context[0].type ==# s:NODE_FUNCTION
throw s:Err(printf('E126: Missing :endfunction: %s', a:ends), a:pos)
endif
endfunction
function! s:VimLParser.check_missing_endif(ends, pos) abort
if self.context[0].type ==# s:NODE_IF || self.context[0].type ==# s:NODE_ELSEIF || self.context[0].type ==# s:NODE_ELSE
throw s:Err(printf('E171: Missing :endif: %s', a:ends), a:pos)
endif
endfunction
function! s:VimLParser.check_missing_endtry(ends, pos) abort
if self.context[0].type ==# s:NODE_TRY || self.context[0].type ==# s:NODE_CATCH || self.context[0].type ==# s:NODE_FINALLY
throw s:Err(printf('E600: Missing :endtry: %s', a:ends), a:pos)
endif
endfunction
function! s:VimLParser.check_missing_endwhile(ends, pos) abort
if self.context[0].type ==# s:NODE_WHILE
throw s:Err(printf('E170: Missing :endwhile: %s', a:ends), a:pos)
endif
endfunction
function! s:VimLParser.check_missing_endfor(ends, pos) abort
if self.context[0].type ==# s:NODE_FOR
throw s:Err(printf('E170: Missing :endfor: %s', a:ends), a:pos)
endif
endfunction
function! s:VimLParser.parse(reader) abort
let self.reader = a:reader
let self.context = []
let toplevel = s:Node(s:NODE_TOPLEVEL)
let toplevel.pos = self.reader.getpos()
let toplevel.body = []
call self.push_context(toplevel)
while self.reader.peek() !=# '<EOF>'
call self.parse_one_cmd()
endwhile
call self.check_missing_endfunction('TOPLEVEL', self.reader.getpos())
call self.check_missing_endif('TOPLEVEL', self.reader.getpos())
call self.check_missing_endtry('TOPLEVEL', self.reader.getpos())
call self.check_missing_endwhile('TOPLEVEL', self.reader.getpos())
call self.check_missing_endfor('TOPLEVEL', self.reader.getpos())
call self.pop_context()
return toplevel
endfunction
function! s:VimLParser.parse_one_cmd() abort
let self.ea = s:ExArg()
if self.reader.peekn(2) ==# '#!'
call self.parse_hashbang()
call self.reader.get()
return
endif
call self.reader.skip_white_and_colon()
if self.reader.peekn(1) ==# ''
call self.reader.get()
return
endif
if self.reader.peekn(1) ==# '"'
call self.parse_comment()
call self.reader.get()
return
endif
let self.ea.linepos = self.reader.getpos()
call self.parse_command_modifiers()
call self.parse_range()
call self.parse_command()
call self.parse_trail()
endfunction
" FIXME:
function! s:VimLParser.parse_command_modifiers() abort
let modifiers = []
while s:TRUE
let pos = self.reader.tell()
let d = ''
if s:isdigit(self.reader.peekn(1))
let d = self.reader.read_digit()
call self.reader.skip_white()
endif
let k = self.reader.read_alpha()
let c = self.reader.peekn(1)
call self.reader.skip_white()
if stridx('aboveleft', k) ==# 0 && len(k) >= 3 " abo\%[veleft]
call add(modifiers, {'name': 'aboveleft'})
elseif stridx('belowright', k) ==# 0 && len(k) >= 3 " bel\%[owright]
call add(modifiers, {'name': 'belowright'})
elseif stridx('browse', k) ==# 0 && len(k) >= 3 " bro\%[wse]
call add(modifiers, {'name': 'browse'})
elseif stridx('botright', k) ==# 0 && len(k) >= 2 " bo\%[tright]
call add(modifiers, {'name': 'botright'})
elseif stridx('confirm', k) ==# 0 && len(k) >= 4 " conf\%[irm]
call add(modifiers, {'name': 'confirm'})
elseif stridx('keepmarks', k) ==# 0 && len(k) >= 3 " kee\%[pmarks]
call add(modifiers, {'name': 'keepmarks'})
elseif stridx('keepalt', k) ==# 0 && len(k) >= 5 " keepa\%[lt]
call add(modifiers, {'name': 'keepalt'})
elseif stridx('keepjumps', k) ==# 0 && len(k) >= 5 " keepj\%[umps]
call add(modifiers, {'name': 'keepjumps'})
elseif stridx('keeppatterns', k) ==# 0 && len(k) >= 5 " keepp\%[atterns]
call add(modifiers, {'name': 'keeppatterns'})
elseif stridx('hide', k) ==# 0 && len(k) >= 3 " hid\%[e]
if self.ends_excmds(c)
break
endif
call add(modifiers, {'name': 'hide'})
elseif stridx('lockmarks', k) ==# 0 && len(k) >= 3 " loc\%[kmarks]
call add(modifiers, {'name': 'lockmarks'})
elseif stridx('leftabove', k) ==# 0 && len(k) >= 5 " lefta\%[bove]
call add(modifiers, {'name': 'leftabove'})
elseif stridx('noautocmd', k) ==# 0 && len(k) >= 3 " noa\%[utocmd]
call add(modifiers, {'name': 'noautocmd'})
elseif stridx('noswapfile', k) ==# 0 && len(k) >= 3 " :nos\%[wapfile]
call add(modifiers, {'name': 'noswapfile'})
elseif stridx('rightbelow', k) ==# 0 && len(k) >= 6 " rightb\%[elow]
call add(modifiers, {'name': 'rightbelow'})
elseif stridx('sandbox', k) ==# 0 && len(k) >= 3 " san\%[dbox]
call add(modifiers, {'name': 'sandbox'})
elseif stridx('silent', k) ==# 0 && len(k) >= 3 " sil\%[ent]
if c ==# '!'
call self.reader.get()
call add(modifiers, {'name': 'silent', 'bang': 1})
else
call add(modifiers, {'name': 'silent', 'bang': 0})
endif
elseif k ==# 'tab' " tab
if d !=# ''
call add(modifiers, {'name': 'tab', 'count': str2nr(d, 10)})
else
call add(modifiers, {'name': 'tab'})
endif
elseif stridx('topleft', k) ==# 0 && len(k) >= 2 " to\%[pleft]
call add(modifiers, {'name': 'topleft'})
elseif stridx('unsilent', k) ==# 0 && len(k) >= 3 " uns\%[ilent]
call add(modifiers, {'name': 'unsilent'})
elseif stridx('vertical', k) ==# 0 && len(k) >= 4 " vert\%[ical]
call add(modifiers, {'name': 'vertical'})
elseif stridx('verbose', k) ==# 0 && len(k) >= 4 " verb\%[ose]
if d !=# ''
call add(modifiers, {'name': 'verbose', 'count': str2nr(d, 10)})
else
call add(modifiers, {'name': 'verbose', 'count': 1})
endif
else
call self.reader.seek_set(pos)
break
endif
endwhile
let self.ea.modifiers = modifiers
endfunction
" FIXME:
function! s:VimLParser.parse_range() abort
let tokens = []
while s:TRUE
while s:TRUE
call self.reader.skip_white()
let c = self.reader.peekn(1)
if c ==# ''
break
endif
if c ==# '.'
call add(tokens, self.reader.getn(1))
elseif c ==# '$'
call add(tokens, self.reader.getn(1))
elseif c ==# "'"
call self.reader.getn(1)
let m = self.reader.getn(1)
if m ==# ''
break
endif
call add(tokens, "'" . m)
elseif c ==# '/'
call self.reader.getn(1)
let [pattern, _] = self.parse_pattern(c)
call add(tokens, pattern)
elseif c ==# '?'
call self.reader.getn(1)
let [pattern, _] = self.parse_pattern(c)
call add(tokens, pattern)
elseif c ==# '\'
let m = self.reader.p(1)
if m ==# '&' || m ==# '?' || m ==# '/'
call self.reader.seek_cur(2)
call add(tokens, '\' . m)
else
throw s:Err('E10: \\ should be followed by /, ? or &', self.reader.getpos())
endif
elseif s:isdigit(c)
call add(tokens, self.reader.read_digit())
endif
while s:TRUE
call self.reader.skip_white()
if self.reader.peekn(1) ==# ''
break
endif
let n = self.reader.read_integer()
if n ==# ''
break
endif
call add(tokens, n)
endwhile
if self.reader.p(0) !=# '/' && self.reader.p(0) !=# '?'
break
endif
endwhile
if self.reader.peekn(1) ==# '%'
call add(tokens, self.reader.getn(1))
elseif self.reader.peekn(1) ==# '*' " && &cpoptions !~ '\*'
call add(tokens, self.reader.getn(1))
endif
if self.reader.peekn(1) ==# ';'
call add(tokens, self.reader.getn(1))
continue
elseif self.reader.peekn(1) ==# ','
call add(tokens, self.reader.getn(1))
continue
endif
break
endwhile
let self.ea.range = tokens
endfunction
" FIXME:
function! s:VimLParser.parse_pattern(delimiter) abort
let pattern = ''
let endc = ''
let inbracket = 0
while s:TRUE
let c = self.reader.getn(1)
if c ==# ''
break
endif
if c ==# a:delimiter && inbracket ==# 0
let endc = c
break
endif
let pattern .= c
if c ==# '\'
let c = self.reader.peekn(1)
if c ==# ''
throw s:Err('E682: Invalid search pattern or delimiter', self.reader.getpos())
endif
call self.reader.getn(1)
let pattern .= c
elseif c ==# '['
let inbracket += 1
elseif c ==# ']'
let inbracket -= 1
endif
endwhile
return [pattern, endc]
endfunction
function! s:VimLParser.parse_command() abort
call self.reader.skip_white_and_colon()
let self.ea.cmdpos = self.reader.getpos()
if self.reader.peekn(1) ==# '' || self.reader.peekn(1) ==# '"'
if !empty(self.ea.modifiers) || !empty(self.ea.range)
call self.parse_cmd_modifier_range()
endif
return
endif
let self.ea.cmd = self.find_command()
if self.ea.cmd is# s:NIL
call self.reader.setpos(self.ea.cmdpos)
throw s:Err(printf('E492: Not an editor command: %s', self.reader.peekline()), self.ea.cmdpos)
endif
if self.reader.peekn(1) ==# '!' && self.ea.cmd.name !=# 'substitute' && self.ea.cmd.name !=# 'smagic' && self.ea.cmd.name !=# 'snomagic'
call self.reader.getn(1)
let self.ea.forceit = s:TRUE
else
let self.ea.forceit = s:FALSE
endif
if self.ea.cmd.flags !~# '\<BANG\>' && self.ea.forceit && self.ea.cmd.flags !~# '\<USERCMD\>'
throw s:Err('E477: No ! allowed', self.ea.cmdpos)
endif
if self.ea.cmd.name !=# '!'
call self.reader.skip_white()
endif
let self.ea.argpos = self.reader.getpos()
if self.ea.cmd.flags =~# '\<ARGOPT\>'
call self.parse_argopt()
endif
if self.ea.cmd.name ==# 'write' || self.ea.cmd.name ==# 'update'
if self.reader.p(0) ==# '>'
if self.reader.p(1) !=# '>'
throw s:Err('E494: Use w or w>>', self.ea.cmdpos)
endif
call self.reader.seek_cur(2)
call self.reader.skip_white()
let self.ea.append = 1
elseif self.reader.peekn(1) ==# '!' && self.ea.cmd.name ==# 'write'
call self.reader.getn(1)
let self.ea.usefilter = s:TRUE
endif
endif
if self.ea.cmd.name ==# 'read'
if self.ea.forceit
let self.ea.usefilter = s:TRUE
let self.ea.forceit = s:FALSE
elseif self.reader.peekn(1) ==# '!'
call self.reader.getn(1)
let self.ea.usefilter = s:TRUE
endif
endif
if self.ea.cmd.name ==# '<' || self.ea.cmd.name ==# '>'
let self.ea.amount = 1
while self.reader.peekn(1) ==# self.ea.cmd.name
call self.reader.getn(1)
let self.ea.amount += 1
endwhile
call self.reader.skip_white()
endif
if self.ea.cmd.flags =~# '\<EDITCMD\>' && !self.ea.usefilter
call self.parse_argcmd()
endif
call self._parse_command(self.ea.cmd.parser)
endfunction
" TODO: self[a:parser]
function! s:VimLParser._parse_command(parser) abort
if a:parser ==# 'parse_cmd_append'
call self.parse_cmd_append()
elseif a:parser ==# 'parse_cmd_break'
call self.parse_cmd_break()
elseif a:parser ==# 'parse_cmd_call'
call self.parse_cmd_call()
elseif a:parser ==# 'parse_cmd_catch'
call self.parse_cmd_catch()
elseif a:parser ==# 'parse_cmd_common'
call self.parse_cmd_common()
elseif a:parser ==# 'parse_cmd_continue'
call self.parse_cmd_continue()
elseif a:parser ==# 'parse_cmd_delfunction'
call self.parse_cmd_delfunction()
elseif a:parser ==# 'parse_cmd_echo'
call self.parse_cmd_echo()
elseif a:parser ==# 'parse_cmd_echoconsole'
call self.parse_cmd_echoconsole()
elseif a:parser ==# 'parse_cmd_echowindow'
call self.parse_cmd_echowindow()
elseif a:parser ==# 'parse_cmd_echoerr'
call self.parse_cmd_echoerr()
elseif a:parser ==# 'parse_cmd_echohl'
call self.parse_cmd_echohl()
elseif a:parser ==# 'parse_cmd_echomsg'
call self.parse_cmd_echomsg()
elseif a:parser ==# 'parse_cmd_echon'
call self.parse_cmd_echon()
elseif a:parser ==# 'parse_cmd_else'
call self.parse_cmd_else()
elseif a:parser ==# 'parse_cmd_elseif'
call self.parse_cmd_elseif()
elseif a:parser ==# 'parse_cmd_endfor'
call self.parse_cmd_endfor()
elseif a:parser ==# 'parse_cmd_endfunction'
call self.parse_cmd_endfunction()
elseif a:parser ==# 'parse_cmd_endif'
call self.parse_cmd_endif()
elseif a:parser ==# 'parse_cmd_endtry'
call self.parse_cmd_endtry()
elseif a:parser ==# 'parse_cmd_endwhile'
call self.parse_cmd_endwhile()
elseif a:parser ==# 'parse_cmd_execute'
call self.parse_cmd_execute()
elseif a:parser ==# 'parse_cmd_finally'
call self.parse_cmd_finally()
elseif a:parser ==# 'parse_cmd_finish'
call self.parse_cmd_finish()
elseif a:parser ==# 'parse_cmd_for'
call self.parse_cmd_for()
elseif a:parser ==# 'parse_cmd_function'
call self.parse_cmd_function()
elseif a:parser ==# 'parse_cmd_if'
call self.parse_cmd_if()
elseif a:parser ==# 'parse_cmd_insert'
call self.parse_cmd_insert()
elseif a:parser ==# 'parse_cmd_let'
call self.parse_cmd_let()
elseif a:parser ==# 'parse_cmd_const'
call self.parse_cmd_const()
elseif a:parser ==# 'parse_cmd_loadkeymap'
call self.parse_cmd_loadkeymap()
elseif a:parser ==# 'parse_cmd_lockvar'
call self.parse_cmd_lockvar()
elseif a:parser ==# 'parse_cmd_lua'
call self.parse_cmd_lua()
elseif a:parser ==# 'parse_cmd_modifier_range'
call self.parse_cmd_modifier_range()
elseif a:parser ==# 'parse_cmd_mzscheme'
call self.parse_cmd_mzscheme()
elseif a:parser ==# 'parse_cmd_perl'
call self.parse_cmd_perl()
elseif a:parser ==# 'parse_cmd_python'
call self.parse_cmd_python()
elseif a:parser ==# 'parse_cmd_python3'
call self.parse_cmd_python3()
elseif a:parser ==# 'parse_cmd_return'
call self.parse_cmd_return()
elseif a:parser ==# 'parse_cmd_ruby'
call self.parse_cmd_ruby()
elseif a:parser ==# 'parse_cmd_tcl'
call self.parse_cmd_tcl()
elseif a:parser ==# 'parse_cmd_throw'
call self.parse_cmd_throw()
elseif a:parser ==# 'parse_cmd_eval'
call self.parse_cmd_eval()
elseif a:parser ==# 'parse_cmd_try'
call self.parse_cmd_try()
elseif a:parser ==# 'parse_cmd_unlet'
call self.parse_cmd_unlet()
elseif a:parser ==# 'parse_cmd_unlockvar'
call self.parse_cmd_unlockvar()
elseif a:parser ==# 'parse_cmd_usercmd'
call self.parse_cmd_usercmd()
elseif a:parser ==# 'parse_cmd_while'
call self.parse_cmd_while()
elseif a:parser ==# 'parse_wincmd'
call self.parse_wincmd()
elseif a:parser ==# 'parse_cmd_syntax'
call self.parse_cmd_syntax()
else
throw printf('unknown parser: %s', string(a:parser))
endif
endfunction
function! s:VimLParser.find_command() abort
let c = self.reader.peekn(1)
let name = ''
if c ==# 'k'
call self.reader.getn(1)
let name = 'k'
elseif c ==# 's' && self.reader.peekn(5) =~# '\v^s%(c[^sr][^i][^p]|g|i[^mlg]|I|r[^e])'
call self.reader.getn(1)
let name = 'substitute'
elseif c =~# '[@*!=><&~#]'
call self.reader.getn(1)
let name = c
elseif self.reader.peekn(2) ==# 'py'
let name = self.reader.read_alnum()
else
let pos = self.reader.tell()
let name = self.reader.read_alpha()
if name !=# 'del' && name =~# '\v^d%[elete][lp]$'
call self.reader.seek_set(pos)
let name = self.reader.getn(len(name) - 1)
endif
endif
if name ==# ''
return s:NIL
endif
if has_key(self.find_command_cache, name)
return self.find_command_cache[name]
endif
let cmd = s:NIL
for x in self.builtin_commands
if stridx(x.name, name) ==# 0 && len(name) >= x.minlen
unlet cmd
let cmd = x
break
endif
endfor
if self.neovim
for x in self.neovim_additional_commands
if stridx(x.name, name) ==# 0 && len(name) >= x.minlen
unlet cmd
let cmd = x
break
endif
endfor
for x in self.neovim_removed_commands
if stridx(x.name, name) ==# 0 && len(name) >= x.minlen
unlet cmd
let cmd = s:NIL
break
endif
endfor
endif
" FIXME: user defined command
if (cmd is# s:NIL || cmd.name ==# 'Print') && name =~# '^[A-Z]'
let name .= self.reader.read_alnum()
unlet cmd
let cmd = {'name': name, 'flags': 'USERCMD', 'parser': 'parse_cmd_usercmd'}
endif
let self.find_command_cache[name] = cmd
return cmd
endfunction
" TODO:
function! s:VimLParser.parse_hashbang() abort