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if not modules then modules = { } end modules ['buff-imp-default'] = {
version = 1.001,
comment = "companion to buff-imp-default.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local patterns, P, V = lpeg.patterns, lpeg.P, lpeg.V
local makepattern = visualizers.makepattern
local handler = visualizers.newhandler()
local grammar = { "visualizer",
-- basic
signal = makepattern(handler,"signal", visualizers.signalpattern),
emptyline = makepattern(handler,"emptyline",patterns.emptyline),
beginline = makepattern(handler,"beginline",patterns.beginline),
newline = makepattern(handler,"newline", patterns.newline),
space = makepattern(handler,"space", patterns.space),
default = makepattern(handler,"default", patterns.utf8char),
content = makepattern(handler,"default", patterns.somecontent), -- not too efficient
-- handy
-- line = V("newline") * V("emptyline")^0 * V("beginline"),
line = V("newline") * V("emptyline")^0 * V("beginline") + V("emptyline") + V("newline"),
whitespace = (V("space") + V("line"))^1,
optionalwhitespace = (V("space") + V("line"))^0,
-- used
pattern = V("line") + V("space") + V("signal") + V("content"),
visualizer = V("pattern")^1
}
local parser = P(grammar)
visualizers.register("default", { parser = parser, handler = handler, grammar = grammar })
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