diff options
Diffstat (limited to 'context/data/scite/context/lexers/scite-context-lexer-mps.lua')
| -rw-r--r-- | context/data/scite/context/lexers/scite-context-lexer-mps.lua | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/context/data/scite/context/lexers/scite-context-lexer-mps.lua b/context/data/scite/context/lexers/scite-context-lexer-mps.lua new file mode 100644 index 000000000..b87ea83cb --- /dev/null +++ b/context/data/scite/context/lexers/scite-context-lexer-mps.lua @@ -0,0 +1,177 @@ +local info = { + version = 1.002, + comment = "scintilla lpeg lexer for metafun", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files", +} + +local global, string, table, lpeg = _G, string, table, lpeg +local P, R, S, V = lpeg.P, lpeg.R, lpeg.S, lpeg.V +local type = type + +local lexer = require("lexer") +local context = lexer.context +local patterns = context.patterns + +local token = lexer.token +local exact_match = lexer.exact_match + +local metafunlexer = lexer.new("mps","scite-context-lexer-mps") +local whitespace = metafunlexer.whitespace + +local metapostprimitives = { } +local metapostinternals = { } +local metapostshortcuts = { } +local metapostcommands = { } + +local metafuninternals = { } +local metafunshortcuts = { } +local metafuncommands = { } + +local mergedshortcuts = { } +local mergedinternals = { } + +do + + local definitions = context.loaddefinitions("scite-context-data-metapost") + + if definitions then + metapostprimitives = definitions.primitives or { } + metapostinternals = definitions.internals or { } + metapostshortcuts = definitions.shortcuts or { } + metapostcommands = definitions.commands or { } + end + + local definitions = context.loaddefinitions("scite-context-data-metafun") + + if definitions then + metafuninternals = definitions.internals or { } + metafunshortcuts = definitions.shortcuts or { } + metafuncommands = definitions.commands or { } + end + + for i=1,#metapostshortcuts do + mergedshortcuts[#mergedshortcuts+1] = metapostshortcuts[i] + end + for i=1,#metafunshortcuts do + mergedshortcuts[#mergedshortcuts+1] = metafunshortcuts[i] + end + + for i=1,#metapostinternals do + mergedinternals[#mergedinternals+1] = metapostinternals[i] + end + for i=1,#metafuninternals do + mergedinternals[#mergedinternals+1] = metafuninternals[i] + end + +end + +local space = patterns.space -- S(" \n\r\t\f\v") +local any = patterns.any + +local dquote = P('"') +local cstoken = patterns.idtoken +local mptoken = patterns.alpha +local leftbrace = P("{") +local rightbrace = P("}") +local number = patterns.real + +local cstokentex = R("az","AZ","\127\255") + S("@!?_") + +-- we could collapse as in tex + +local spacing = token(whitespace, space^1) +local rest = token("default", any) +local comment = token("comment", P("%") * (1-S("\n\r"))^0) +local internal = token("reserved", exact_match(mergedshortcuts,false)) +local shortcut = token("data", exact_match(mergedinternals)) +local helper = token("command", exact_match(metafuncommands)) +local plain = token("plain", exact_match(metapostcommands)) +local quoted = token("quote", dquote) + * token("string", P(1-dquote)^0) + * token("quote", dquote) +local texstuff = token("quote", P("btex ") + P("verbatimtex ")) + * token("string", P(1-P(" etex"))^0) + * token("quote", P(" etex")) +local primitive = token("primitive", exact_match(metapostprimitives)) +local identifier = token("default", cstoken^1) +local number = token("number", number) +local grouping = token("grouping", S("()[]{}")) -- can be an option +local special = token("special", S("#()[]{}<>=:\"")) -- or else := <> etc split +local texlike = token("warning", P("\\") * cstokentex^1) +local extra = token("extra", P("+-+") + P("++") + S("`~%^&_-+*/\'|\\")) + +local nested = P { leftbrace * (V(1) + (1-rightbrace))^0 * rightbrace } +local texlike = token("embedded", P("\\") * (P("MP") + P("mp")) * mptoken^1) + * spacing^0 + * token("grouping", leftbrace) + * token("default", (nested + (1-rightbrace))^0 ) + * token("grouping", rightbrace) + + token("warning", P("\\") * cstokentex^1) + +-- lua: we assume: lua ( "lua code" ) + +local cldlexer = lexer.load("scite-context-lexer-cld","mps-cld") + +local startlua = P("lua") * space^0 * P('(') * space^0 * P('"') +local stoplua = P('"') * space^0 * P(')') + +local startluacode = token("embedded", startlua) +local stopluacode = #stoplua * token("embedded", stoplua) + +lexer.embed_lexer(metafunlexer, cldlexer, startluacode, stopluacode) + +metafunlexer._rules = { + { "whitespace", spacing }, + { "comment", comment }, + { "internal", internal }, + { "shortcut", shortcut }, + { "helper", helper }, + { "plain", plain }, + { "primitive", primitive }, + { "texstuff", texstuff }, + { "identifier", identifier }, + { "number", number }, + { "quoted", quoted }, + -- { "grouping", grouping }, -- can be an option + { "special", special }, + { "texlike", texlike }, + { "extra", extra }, + { "rest", rest }, +} + +metafunlexer._tokenstyles = context.styleset + +metafunlexer._foldpattern = patterns.lower^2 -- separate entry else interference + +metafunlexer._foldsymbols = { + _patterns = { + "[a-z][a-z]+", + }, + ["plain"] = { + ["beginfig"] = 1, + ["endfig"] = -1, + ["beginglyph"] = 1, + ["endglyph"] = -1, + -- ["begingraph"] = 1, + -- ["endgraph"] = -1, + }, + ["primitive"] = { + ["def"] = 1, + ["vardef"] = 1, + ["primarydef"] = 1, + ["secondarydef" ] = 1, + ["tertiarydef"] = 1, + ["enddef"] = -1, + ["if"] = 1, + ["fi"] = -1, + ["for"] = 1, + ["forever"] = 1, + ["endfor"] = -1, + } +} + +-- if inspect then inspect(metafunlexer) end + +return metafunlexer |