2016-01-12 16:26:00

1 files changed, 45 insertions, 0 deletions

diff --git a/tex/context/base/mkiv/luat-lua.lua b/tex/context/base/mkiv/luat-lua.lua
new file mode 100644
index 000000000..972004e88
--- /dev/null
+++ b/tex/context/base/mkiv/luat-lua.lua
@@ -0,0 +1,45 @@
+if not modules then modules = { } end modules ['luat-lua'] = {
+    version   = 1.001,
+    comment   = "companion to luat-lib.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+if lua then do
+
+    local delayed = { }
+
+    function lua.flushdelayed(...)
+        local t = delayed
+        delayed = { }
+        for i=1, #t do
+            t[i](...)
+        end
+    end
+
+    function lua.delay(f)
+        delayed[#delayed+1] = f
+    end
+
+    function lua.flush(...)
+        context.directlua("lua.flushdelayed(%,t)",{...})
+    end
+
+end end
+
+-- See mk.pdf for an explanation of the following code:
+--
+-- function test(n)
+--     lua.delay(function(...)
+--         context("pi: %s %s %s",...)
+--         context.par()
+--     end)
+--     lua.delay(function(...)
+--         context("more pi: %s %s %s",...)
+--         context.par()
+--     end)
+--     context("\\setbox0=\\hbox{%s}",math.pi*n)
+--     local box = tex.box[0]
+--     lua.flush(box.width,box.height,box.depth)
+-- end