diff options
Diffstat (limited to 'tex/context/base/core-env.lua')
-rw-r--r-- | tex/context/base/core-env.lua | 308 |
1 files changed, 154 insertions, 154 deletions
diff --git a/tex/context/base/core-env.lua b/tex/context/base/core-env.lua index 025192d4b..c85a5e144 100644 --- a/tex/context/base/core-env.lua +++ b/tex/context/base/core-env.lua @@ -1,154 +1,154 @@ -if not modules then modules = { } end modules ['core-env'] = { - version = 1.001, - comment = "companion to core-env.mkiv", - author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", - copyright = "PRAGMA ADE / ConTeXt Development Team", - license = "see context related readme files" -} - --- maybe this will move to the context name space although the --- plurals are unlikely to clash with future tex primitives --- --- if tex.modes['xxxx'] then .... else .... end - -local P, C, S, Cc, lpegmatch, patterns = lpeg.P, lpeg.C, lpeg.S, lpeg.Cc, lpeg.match, lpeg.patterns - -local csname_id = token.csname_id -local create = token.create -local texcount = tex.count -local texsetcount = tex.setcount - -local allocate = utilities.storage.allocate -local setmetatableindex = table.setmetatableindex - -local undefined = csname_id("*undefined*crap*") -local iftrue = create("iftrue")[2] -- inefficient hack - -tex.modes = allocate { } -tex.systemmodes = allocate { } -tex.constants = allocate { } -tex.conditionals = allocate { } -tex.ifs = allocate { } - -local modes = { } -local systemmodes = { } - -setmetatableindex(tex.modes, function(t,k) - local m = modes[k] - if m then - return m() - else - local n = "mode>" .. k - if csname_id(n) == undefined then - return false - else - modes[k] = function() return texcount[n] >= 1 end - return texcount[n] >= 1 - end - end -end) - -setmetatableindex(tex.systemmodes, function(t,k) - local m = systemmodes[k] - if m then - return m() - else - local n = "mode>*" .. k - if csname_id(n) == undefined then - return false - else - systemmodes[k] = function() return texcount[n] >= 1 end - return texcount[n] >= 1 - end - end -end) - -setmetatableindex(tex.constants, function(t,k) - return csname_id(k) ~= undefined and texcount[k] or 0 -end) - -setmetatableindex(tex.conditionals, function(t,k) -- 0 == true - return csname_id(k) ~= undefined and texcount[k] == 0 -end) - -setmetatableindex(tex.ifs, function(t,k) - -- k = "if" .. k -- better not - return csname_id(k) ~= undefined and create(k)[2] == iftrue -- inefficient, this create, we need a helper -end) - --- todo : global - --- not possible as we let at the tex end to zerocount and plusone --- --- function tex.settrue(name,glob) --- if glob then --- texsetcount("global",name,0) --- else --- texcount[name] = 0 --- end --- end --- --- function tex.setfalse(name,glob) --- if glob then --- texsetcount("global",name,1) --- else --- texcount[name] = 1 --- end --- end - ----- arg = P("{") * C(patterns.nested) * P("}") + Cc("") - -local sep = S("), ") -local str = C((1-sep)^1) -local tag = P("(") * C((1-S(")" ))^1) * P(")") -local arg = P("(") * C((1-S("){"))^1) * P("{") * C((1-P("}"))^0) * P("}") * P(")") - -local pattern = ( - P("lua") * tag / context.luasetup - + P("xml") * arg / context.setupwithargument -- or xmlw as xmlsetup has swapped arguments - + (P("tex") * tag + str) / context.texsetup - + sep^1 -)^1 - -function commands.autosetups(str) - lpegmatch(pattern,str) -end - --- new (inefficient) - -local lookuptoken = token.lookup - -local dimencode = lookuptoken("scratchdimen" )[1] -local countcode = lookuptoken("scratchcounter")[1] -local tokencode = lookuptoken("scratchtoken" )[1] -local skipcode = lookuptoken("scratchskip" )[1] - -local types = { - [dimencode] = "dimen", - [countcode] = "count", - [tokencode] = "token", - [skipcode ] = "skip", -} - -function tex.isdimen(name) - return lookuptoken(name)[1] == dimencode -end - -function tex.iscount(name) - return lookuptoken(name)[1] == countcode -end - -function tex.istoken(name) - return lookuptoken(name)[1] == tokencode -end - -function tex.isskip(name) - return lookuptoken(name)[1] == skipcode -end - -function tex.type(name) - return types[lookuptoken(name)[1]] or "macro" -end - --- inspect(tex.isdimen("xxxxxxxxxxxxxxx")) --- inspect(tex.isdimen("textwidth")) +if not modules then modules = { } end modules ['core-env'] = {
+ version = 1.001,
+ comment = "companion to core-env.mkiv",
+ author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+ copyright = "PRAGMA ADE / ConTeXt Development Team",
+ license = "see context related readme files"
+}
+
+-- maybe this will move to the context name space although the
+-- plurals are unlikely to clash with future tex primitives
+--
+-- if tex.modes['xxxx'] then .... else .... end
+
+local P, C, S, Cc, lpegmatch, patterns = lpeg.P, lpeg.C, lpeg.S, lpeg.Cc, lpeg.match, lpeg.patterns
+
+local csname_id = token.csname_id
+local create = token.create
+local texcount = tex.count
+local texsetcount = tex.setcount
+
+local allocate = utilities.storage.allocate
+local setmetatableindex = table.setmetatableindex
+
+local undefined = csname_id("*undefined*crap*")
+local iftrue = create("iftrue")[2] -- inefficient hack
+
+tex.modes = allocate { }
+tex.systemmodes = allocate { }
+tex.constants = allocate { }
+tex.conditionals = allocate { }
+tex.ifs = allocate { }
+
+local modes = { }
+local systemmodes = { }
+
+setmetatableindex(tex.modes, function(t,k)
+ local m = modes[k]
+ if m then
+ return m()
+ else
+ local n = "mode>" .. k
+ if csname_id(n) == undefined then
+ return false
+ else
+ modes[k] = function() return texcount[n] >= 1 end
+ return texcount[n] >= 1
+ end
+ end
+end)
+
+setmetatableindex(tex.systemmodes, function(t,k)
+ local m = systemmodes[k]
+ if m then
+ return m()
+ else
+ local n = "mode>*" .. k
+ if csname_id(n) == undefined then
+ return false
+ else
+ systemmodes[k] = function() return texcount[n] >= 1 end
+ return texcount[n] >= 1
+ end
+ end
+end)
+
+setmetatableindex(tex.constants, function(t,k)
+ return csname_id(k) ~= undefined and texcount[k] or 0
+end)
+
+setmetatableindex(tex.conditionals, function(t,k) -- 0 == true
+ return csname_id(k) ~= undefined and texcount[k] == 0
+end)
+
+setmetatableindex(tex.ifs, function(t,k)
+ -- k = "if" .. k -- better not
+ return csname_id(k) ~= undefined and create(k)[2] == iftrue -- inefficient, this create, we need a helper
+end)
+
+-- todo : global
+
+-- not possible as we let at the tex end to zerocount and plusone
+--
+-- function tex.settrue(name,glob)
+-- if glob then
+-- texsetcount("global",name,0)
+-- else
+-- texcount[name] = 0
+-- end
+-- end
+--
+-- function tex.setfalse(name,glob)
+-- if glob then
+-- texsetcount("global",name,1)
+-- else
+-- texcount[name] = 1
+-- end
+-- end
+
+---- arg = P("{") * C(patterns.nested) * P("}") + Cc("")
+
+local sep = S("), ")
+local str = C((1-sep)^1)
+local tag = P("(") * C((1-S(")" ))^1) * P(")")
+local arg = P("(") * C((1-S("){"))^1) * P("{") * C((1-P("}"))^0) * P("}") * P(")")
+
+local pattern = (
+ P("lua") * tag / context.luasetup
+ + P("xml") * arg / context.setupwithargument -- or xmlw as xmlsetup has swapped arguments
+ + (P("tex") * tag + str) / context.texsetup
+ + sep^1
+)^1
+
+function commands.autosetups(str)
+ lpegmatch(pattern,str)
+end
+
+-- new (inefficient)
+
+local lookuptoken = token.lookup
+
+local dimencode = lookuptoken("scratchdimen" )[1]
+local countcode = lookuptoken("scratchcounter")[1]
+local tokencode = lookuptoken("scratchtoken" )[1]
+local skipcode = lookuptoken("scratchskip" )[1]
+
+local types = {
+ [dimencode] = "dimen",
+ [countcode] = "count",
+ [tokencode] = "token",
+ [skipcode ] = "skip",
+}
+
+function tex.isdimen(name)
+ return lookuptoken(name)[1] == dimencode
+end
+
+function tex.iscount(name)
+ return lookuptoken(name)[1] == countcode
+end
+
+function tex.istoken(name)
+ return lookuptoken(name)[1] == tokencode
+end
+
+function tex.isskip(name)
+ return lookuptoken(name)[1] == skipcode
+end
+
+function tex.type(name)
+ return types[lookuptoken(name)[1]] or "macro"
+end
+
+-- inspect(tex.isdimen("xxxxxxxxxxxxxxx"))
+-- inspect(tex.isdimen("textwidth"))
|