tibia-client/tools/lua-binding-generator/generate_lua_bindings.lua

267 lines
6.6 KiB
Lua
Executable File

#!/usr/bin/lua
-- parse options
if #arg == 0 then
print('usage: ' .. arg[0] .. ' <headers> [--doc]')
os.exit(1)
end
gendoc = false
for i=1,#arg do
if arg[i] == '--doc' then
table.remove(arg, i)
gendoc = true
break
end
end
if #arg == 0 then
print('Specify a file.')
os.exit(1)
end
-- string utilities
function string:matchcount(pattern)
local count = 0
for w in self:gmatch(pattern) do count = count + 1 end
return count
end
function string:splitlines()
local t = {}
local function helper(line) table.insert(t, line) return "" end
helper((self:gsub("(.-)\r?\n", helper)))
return t
end
function table.removevalue(t, value)
for k,v in pairs(t) do
if v == value then
table.remove(t, k)
break
end
end
end
function string.split(s, delim)
local start = 1
local results = {}
while true do
local pos = string.find(s, delim, start, true)
if not pos then
break
end
table.insert(results, string.sub(s, start, pos-1))
start = pos + string.len(delim)
end
table.insert(results, string.sub(s, start))
table.removevalue(results, '')
return results
end
function string.trim(s)
return string.match(s, '^%s*(.*%S)') or ''
end
function countbrackets(str)
local ret = 0
for _i in str:gmatch('{') do ret = ret+1 end
for _i in str:gmatch('}') do ret = ret-1 end
return ret
end
function filterType(arg)
arg = arg:gsub('^const[%s]+', '')
arg = arg:gsub('Ptr', '')
arg = arg:gsub('&', '')
arg = arg:gsub('.*List$', 'table')
arg = arg:gsub('^std::string$', 'string')
arg = arg:gsub('^OTMLNode$', 'table')
arg = arg:gsub('^std::vector<.*>$', 'table')
arg = arg:gsub('^std::map<.*>$', 'table')
arg = arg:gsub('^[u]?int[0-9_t]*$', 'integer')
arg = arg:gsub('^float$', 'number')
arg = arg:gsub('^double$', 'number')
arg = arg:gsub('^bool$', 'boolean')
arg = arg:gsub('^ticks_t$', 'integer')
arg = arg:gsub('.*\*.*', 'buffer')
arg = arg:gsub('.*::.*', 'enum')
return arg
end
function filterArgs(str)
local args = str:split(',') or { str }
newstr = ''
for i,argstr in pairs(args) do
argstr = argstr:gsub('[%s]*=.*','')
local argtype, argvar = argstr:match('^(.*[%s]+[&*]?)([%w_]*)')
newstr = newstr .. filterType(argtype:trim()) .. ' ' .. argvar:trim()
if i ~= #args then
newstr = newstr .. ', '
end
end
return newstr
end
function filterReturn(str)
str = str:gsub('virtual ', '')
str = str:gsub('static ', '')
return filterType(str:trim())
end
function emitSingletonDecl(cppclass, luaclass)
if gendoc then
outline = 'class ' .. luaclass .. ' {\n' ..
'public:'
else
outline = ' // ' .. luaclass .. '\n' ..
' g_lua.registerStaticClass("' .. luaclass .. '");'
end
print(outline)
return outline
end
function emitClassDecl(cppclass, luaclass, baseclass)
local outline
if gendoc then
outline = 'class ' .. luaclass
if cppclass ~= 'LuaObject' and baseclass then
outline = outline .. ' : public ' .. baseclass
end
outline = outline .. ' {\npublic:'
else
print(' // ' .. luaclass)
outline = ' g_lua.registerClass<' .. cppclass
if cppclass ~= 'LuaObject' and baseclass and baseclass ~= 'LuaObject' then
outline = outline .. ', ' .. baseclass
end
outline = outline .. '>();'
end
print(outline)
return outline
end
function emitClassEnd()
local outline = '\n'
if gendoc then
outline = '};\n'
end
print(outline)
return outline
end
function emitSingletonFunctionDecl(cppclass, luaclass, funcname, funcargs, funcret)
local outline
if gendoc then
outline = ' ' .. filterReturn(funcret) .. ' ' .. funcname .. '(' .. filterArgs(funcargs) .. ');'
else
outline = ' g_lua.bindSingletonFunction("' .. luaclass .. '", "' .. funcname .. '", &' .. cppclass .. '::' .. funcname .. ', &' .. luaclass .. ');'
end
print(outline)
return outline
end
function emitMemberFunctionDecl(cppclass, luaclass, funcname, funcargs, funcret)
local outline
if gendoc then
outline = ' ' .. filterReturn(funcret) .. ' ' .. funcname .. '(' .. filterArgs(funcargs) .. ');'
else
outline = ' g_lua.bindClassMemberFunction("' .. funcname .. '", &' .. cppclass .. '::' .. funcname .. ');'
end
print(outline)
return outline
end
function parseClassHeader(line, param)
cppclass = line:match('^[%s]*class[%s]+([%w_]+)')
if not cppclass then
print('Invalid directive at ' .. header .. ':' .. linenumber)
os.exit(1)
end
luaclass = param or cppclass
insideclass = true
publicmethods = true
brackets = 0
bindnext = true
if singleton then
emitSingletonDecl(cppclass, luaclass)
else
baseclass = line:match(':[%s]+public[%s]+([%w_]+)')
emitClassDecl(cppclass, luaclass, baseclass)
end
end
function parseHeader(file)
header = file
linenumber = 0
brackets = 0
publicmethods = false
insideclass = false
singleton = false
if not io.open(header, 'r') then
print('Unable to open ' .. header)
exit(1)
end
lines = {}
for line in io.lines(header) do table.insert(lines, line) end
for linenumber=1,#lines do
local line = lines[linenumber]
local param = line:match('^[%s]*//[%s]*@[%w]+[%s]+(.*)[%s]*')
if not insideclass then
if line:match('[%s]*//[%s]*@bindsingleton') then
singleton = true
linenumber = linenumber+1
parseClassHeader(lines[linenumber], param)
elseif line:match('[%s]*//[%s]*@bindclass') then
singleton = false
linenumber = linenumber+1
parseClassHeader(lines[linenumber], param)
end
else
if brackets > 1 then
-- ignore
elseif line:match('[%s]*//[%s]*@dontbind') then
bindnext = false
elseif line:match('[%s]*template') then
bindnext = false
elseif line:match('[%s]*public:') then
publicmethods = true
elseif line:match('[%s]*private:') or line:match('[%s]*protected:') then
publicmethods = false
elseif line:match('^};') then
insideclass = false
emitClassEnd()
elseif bindnext then
funcreturn, funcname, funcargs = line:match('^[%s]*([%w <>&\*:_]*) ([%w_]+)%(([^%)]*%))[%w ]*[;{=].*$')
if funcname then
funcargs = funcargs:match('(.*)\%)')
if funcname ~= cppclass then
if singleton then
emitSingletonFunctionDecl(cppclass, luaclass, funcname, funcargs, funcreturn)
else
emitMemberFunctionDecl(cppclass, luaclass, funcname, funcargs, funcreturn)
end
end
end
else
bindnext = true
end
brackets = brackets + countbrackets(line)
end
end
end
for i=1,#arg do
parseHeader(arg[i])
end