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if not modules then modules = { } end modules ['v-tex'] = {
version = 1.001,
comment = "companion to buff-vis.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local verbatim = context.verbatim
local P, S, V, patterns = lpeg.P, lpeg.S, lpeg.V, lpeg.patterns
local visualizer = {
start = function() context.startTexSnippet() end,
stop = function() context.stopTexSnippet() end ,
name = function(s) verbatim.TexSnippetName(s) end,
group = function(s) verbatim.TexSnippetGroup(s) end,
boundary = function(s) verbatim.TexSnippetBoundary(s) end,
special = function(s) verbatim.TexSnippetSpecial(s) end,
comment = function(s) verbatim.TexSnippetComment(s) end,
default = function(s) verbatim(s) end,
}
-- todo: unicode letters
local comment = S("%")
local restofline = (1-patterns.newline)^0
local anything = patterns.anything
local name = P("\\") * (patterns.letter + S("@!?"))^1
local escape = P("\\") * (anything - patterns.newline)^-1 -- else we get \n
local group = S("${}")
local boundary = S('[]()<>#="')
local special = S("/^_-&+'`|")
local pattern = visualizers.pattern
local texvisualizer = P { "process",
process =
V("start") * V("content") * V("stop"),
start =
pattern(visualizer,"start",patterns.beginofstring),
stop =
pattern(visualizer,"stop",patterns.endofstring),
content = (
pattern(visualizer,"comment",comment)
* pattern(visualizer,"default",restofline)
+ pattern(visualizer,"name",name)
+ pattern(visualizer,"name",escape)
+ pattern(visualizer,"group",group)
+ pattern(visualizer,"boundary",boundary)
+ pattern(visualizer,"special",special)
+ pattern(visualizer,"default",anything)
)^1
}
return texvisualizer
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