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local info = {
version = 1.002,
comment = "scintilla lpeg lexer for w",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
-- this will be extended
if not lexer._CONTEXTEXTENSIONS then require("scite-context-lexer") end
local lexer = lexer
local token, style, colors, exact_match, no_style = lexer.token, lexer.style, lexer.colors, lexer.exact_match, lexer.style_nothing
local P, R, S, C, Cg, Cb, Cs, Cmt, lpegmatch = lpeg.P, lpeg.R, lpeg.S, lpeg.C, lpeg.Cg, lpeg.Cb, lpeg.Cs, lpeg.Cmt, lpeg.match
local setmetatable = setmetatable
local weblexer = { _NAME = "web", _FILENAME = "scite-context-lexer-web" }
local whitespace = lexer.WHITESPACE
local context = lexer.context
local keywords = { -- copied from cpp.lua
-- c
'asm', 'auto', 'break', 'case', 'const', 'continue', 'default', 'do', 'else',
'extern', 'false', 'for', 'goto', 'if', 'inline', 'register', 'return',
'sizeof', 'static', 'switch', 'true', 'typedef', 'volatile', 'while',
'restrict',
-- hm
'_Bool', '_Complex', '_Pragma', '_Imaginary',
-- c++.
'catch', 'class', 'const_cast', 'delete', 'dynamic_cast', 'explicit',
'export', 'friend', 'mutable', 'namespace', 'new', 'operator', 'private',
'protected', 'public', 'signals', 'slots', 'reinterpret_cast',
'static_assert', 'static_cast', 'template', 'this', 'throw', 'try', 'typeid',
'typename', 'using', 'virtual'
}
local datatypes = { -- copied from cpp.lua
'bool', 'char', 'double', 'enum', 'float', 'int', 'long', 'short', 'signed',
'struct', 'union', 'unsigned', 'void'
}
local macros = { -- copied from cpp.lua
'define', 'elif', 'else', 'endif', 'error', 'if', 'ifdef', 'ifndef', 'import',
'include', 'line', 'pragma', 'undef', 'using', 'warning'
}
local space = lexer.space -- S(" \n\r\t\f\v")
local any = lexer.any
local patterns = context.patterns
local restofline = patterns.restofline
local startofline = patterns.startofline
local squote = P("'")
local dquote = P('"')
local escaped = P("\\") * P(1)
local slashes = P('//')
local begincomment = P("/*")
local endcomment = P("*/")
local percent = P("%")
local spacing = token(whitespace, space^1)
local rest = token("default", any)
local shortcomment = token("comment", slashes * restofline^0)
local longcomment = token("comment", begincomment * (1-endcomment)^0 * endcomment^-1)
local texcomment = token("comment", percent * restofline^0)
local shortstring = token("quote", dquote) -- can be shared
* token("string", (escaped + (1-dquote))^0)
* token("quote", dquote)
+ token("quote", squote)
* token("string", (escaped + (1-squote))^0)
* token("quote", squote)
local integer = P("-")^-1 * (lexer.hex_num + lexer.dec_num)
local number = token("number", lexer.float + integer)
local validword = R("AZ","az","__") * R("AZ","az","__","09")^0
local identifier = token("default",validword)
local operator = token("special", S('+-*/%^!=<>;:{}[]().&|?~'))
----- optionalspace = spacing^0
local p_keywords = exact_match(keywords )
local p_datatypes = exact_match(datatypes)
local p_macros = exact_match(macros)
local keyword = token("keyword", p_keywords)
local datatype = token("keyword", p_datatypes)
local identifier = token("default", validword)
local macro = token("data", #P('#') * startofline * P('#') * S('\t ')^0 * p_macros)
local beginweb = P("@")
local endweb = P("@c")
local webcomment = token("comment", #beginweb * startofline * beginweb * (1-endweb)^0 * endweb)
local texlexer = lexer.load('scite-context-lexer-tex')
lexer.embed_lexer(weblexer, texlexer, #beginweb * startofline * token("comment",beginweb), token("comment",endweb))
weblexer._rules = {
{ 'whitespace', spacing },
{ 'keyword', keyword },
{ 'type', datatype },
{ 'identifier', identifier },
{ 'string', shortstring },
-- { 'webcomment', webcomment },
{ 'texcomment', texcomment },
{ 'longcomment', longcomment },
{ 'shortcomment', shortcomment },
{ 'number', number },
{ 'macro', macro },
{ 'operator', operator },
{ 'rest', rest },
}
weblexer._tokenstyles = context.styleset
weblexer._foldpattern = P("/*") + P("*/") + S("{}") -- separate entry else interference
weblexer._foldsymbols = {
_patterns = {
'[{}]',
'/%*',
'%*/',
},
-- ["data"] = { -- macro
-- ['region'] = 1,
-- ['endregion'] = -1,
-- ['if'] = 1,
-- ['ifdef'] = 1,
-- ['ifndef'] = 1,
-- ['endif'] = -1,
-- },
["special"] = { -- operator
['{'] = 1,
['}'] = -1,
},
["comment"] = {
['/*'] = 1,
['*/'] = -1,
}
}
-- -- by indentation:
--
weblexer._foldpatterns = nil
weblexer._foldsymbols = nil
return weblexer
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