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-- ldoc/lang.lua
--
-- A "better" C/C++ comment parser for LDoc.
--
-- Copyright 2013 Daniel Silverstone <dsilvers@digital-scurf.org>
--
-- Permission is granted to use this under the same licence terms as
-- LDoc itself.
--
-- To use, place this in ldoc/lang.lua in your source-tree relative to where
-- you invoke LDoc. This file deliberately does not contain documentation
-- comments and thus should not be picked up by accident.
-- This allows for C/C++ comments of the form:
--
-- /** This is a thingy.
-- *
-- * Here is thingy's description.
-- *
-- * @return Badgers
-- */
local pp = package.path
package.path = pp:gsub("%./%?%.lua;", "")
package.loaded['ldoc.lang'] = nil
local ll = require 'ldoc.lang'
package.path = pp
local class = require 'pl.class'
local stringx = require 'pl.stringx'
local cc_better = class(ll.cc._class)
local function find_pfx(s, common)
return s:match("^([ *]*)")
end
local function max_pfx(s1, s2)
if #s1 > #s2 then
s1 = s1:sub(1, #s2)
else
s2 = s2:sub(1, #s1)
end
while s1 ~= s2 do
s1 = s1:sub(1, -2)
s2 = s2:sub(1, -2)
end
return s1
end
function cc_better:grab_block_comment(v,tok)
v = v:gsub(self.block_comment .. " *",'')
v = v:sub(1,-3)
local lines = stringx.splitlines(v, true)
if #lines > 1 then
local checklines = {}
for i = 2, #lines do
if lines[i] ~= lines[i]:match("^([ *]*)") then
checklines[#checklines+1] = lines[i]
end
end
if #checklines > 0 then
local common_pfx = checklines[1]:match("^([ *]*)")
for i = 1, #checklines do
local this_pfx = checklines[i]:match("^([ *]*)")
common_pfx = max_pfx(common_pfx, this_pfx)
end
for i = 2, #lines do
lines[i] = lines[i]:sub(#common_pfx + 1)
end
end
end
v = table.concat(lines, "\n")
return 'comment', v
end
ll.cc = cc_better()
return ll
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