if not modules then modules = { } end modules ['buff-imp-mp'] = { version = 1.001, comment = "companion to buff-imp-mp.mkiv", author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", copyright = "PRAGMA ADE / ConTeXt Development Team", license = "see context related readme files" } -- Now that we also use lpeg lexers in scite, we can share the keywords -- so we have moved the keyword lists to mult-mps.lua. Don't confuse the -- scite lexers with the ones we use here. Of course all those lexers -- boil down to doing similar things, but here we need more control over -- the rendering and have a different way of nesting. It is no coincidence -- that the coloring looks similar: both are derived from earlier lexing (in -- texedit, mkii and the c++ scite lexer). -- -- In the meantime we have lpeg based lexers in scite! And, as all this -- lexing boils down to the same principles (associating symbolic rendering -- with ranges of characters) and as the scite lexers do nesting, it makes -- sense at some point to share code. However, keep in mind that the pretty -- printers are also supposed to support invalid code (for educational -- purposes). The scite lexers are more recent and there a different color -- scheme is used. So, we might move away from the traditional coloring. local P, S, V, patterns = lpeg.P, lpeg.S, lpeg.V, lpeg.patterns local context = context local verbatim = context.verbatim local makepattern = visualizers.makepattern local MetapostSnippet = context.MetapostSnippet local startMetapostSnippet = context.startMetapostSnippet local stopMetapostSnippet = context.stopMetapostSnippet local MetapostSnippetConstructor = verbatim.MetapostSnippetConstructor local MetapostSnippetBoundary = verbatim.MetapostSnippetBoundary local MetapostSnippetSpecial = verbatim.MetapostSnippetSpecial local MetapostSnippetComment = verbatim.MetapostSnippetComment local MetapostSnippetCommentText = verbatim.MetapostSnippetCommentText local MetapostSnippetQuote = verbatim.MetapostSnippetQuote local MetapostSnippetString = verbatim.MetapostSnippetString local MetapostSnippetNamePrimitive = verbatim.MetapostSnippetNamePrimitive local MetapostSnippetNamePlain = verbatim.MetapostSnippetNamePlain local MetapostSnippetNameMetafun = verbatim.MetapostSnippetNameMetafun local MetapostSnippetName = verbatim.MetapostSnippetName local primitives, plain, metafun local function initialize() local mps = dofile(resolvers.findfile("mult-mps.lua","tex")) or { primitives = { }, plain = { }, metafun = { }, } primitives = table.tohash(mps.primitives) plain = table.tohash(mps.plain) metafun = table.tohash(mps.metafun) end local function visualizename(s) if not primitives then initialize() end if primitives[s] then MetapostSnippetNamePrimitive(s) elseif plain[s] then MetapostSnippetNamePlain(s) elseif metafun[s] then MetapostSnippetNameMetafun(s) else MetapostSnippetName(s) end end local handler = visualizers.newhandler { startinline = function() MetapostSnippet(false,"{") end, stopinline = function() context("}") end, startdisplay = function() startMetapostSnippet() end, stopdisplay = function() stopMetapostSnippet() end , constructor = function(s) MetapostSnippetConstructor(s) end, boundary = function(s) MetapostSnippetBoundary(s) end, special = function(s) MetapostSnippetSpecial(s) end, comment = function(s) MetapostSnippetComment(s) end, commenttext = function(s) MetapostSnippetCommentText(s) end, string = function(s) MetapostSnippetString(s) end, quote = function(s) MetapostSnippetQuote(s) end, name = visualizename, } local comment = P("%") local name = (patterns.letter + S("_"))^1 local constructor = S("$@#") local boundary = S('()[]:=<>;"') local special = S("-+/*|`!?^&%.,") local grammar = visualizers.newgrammar("default", { "visualizer", comment = makepattern(handler,"comment",comment) * makepattern(handler,"commenttext",(patterns.anything - patterns.newline)^0), dstring = makepattern(handler,"quote",patterns.dquote) * makepattern(handler,"string",patterns.nodquote) * makepattern(handler,"quote",patterns.dquote), name = makepattern(handler,"name",name), constructor = makepattern(handler,"constructor",constructor), boundary = makepattern(handler,"boundary",boundary), special = makepattern(handler,"special",special), pattern = V("comment") + V("dstring") + V("name") + V("constructor") + V("boundary") + V("special") + V("newline") * V("emptyline")^0 * V("beginline") + V("space") + V("default"), visualizer = V("pattern")^1 } ) local parser = P(grammar) visualizers.register("mp", { parser = parser, handler = handler, grammar = grammar } )