diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/mkiv/buff-imp-mp.lua')
-rw-r--r-- | Master/texmf-dist/tex/context/base/mkiv/buff-imp-mp.lua | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/mkiv/buff-imp-mp.lua b/Master/texmf-dist/tex/context/base/mkiv/buff-imp-mp.lua new file mode 100644 index 00000000000..bcd18dd47a0 --- /dev/null +++ b/Master/texmf-dist/tex/context/base/mkiv/buff-imp-mp.lua @@ -0,0 +1,119 @@ +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 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, + string = function(s) MetapostSnippetString(s) end, + quote = function(s) MetapostSnippetQuote(s) end, + name = visualizename, +} + +local comment = S("%") +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) + * (V("space") + V("content"))^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 } ) |