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authorfaketruth <faketruth@0a769ca7-a7f5-676a-18bf-c427514a06d6>2011-10-03 21:25:04 +0200
committerfaketruth <faketruth@0a769ca7-a7f5-676a-18bf-c427514a06d6>2011-10-03 21:25:04 +0200
commitaafef187ef856a36c3f8e599afea2dee44f08904 (patch)
treec84762cc768da2800a0f80b902c704e782bd29ef /tolua++-1.0.93/src/bin/lua/basic.lua
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+-- tolua: basic utility functions
+-- Written by Waldemar Celes
+-- TeCGraf/PUC-Rio
+-- Jul 1998
+-- Last update: Apr 2003
+-- $Id: $
+
+-- This code is free software; you can redistribute it and/or modify it.
+-- The software provided hereunder is on an "as is" basis, and
+-- the author has no obligation to provide maintenance, support, updates,
+-- enhancements, or modifications.
+
+
+-- Basic C types and their corresponding Lua types
+-- All occurrences of "char*" will be replaced by "_cstring",
+-- and all occurrences of "void*" will be replaced by "_userdata"
+_basic = {
+ ['void'] = '',
+ ['char'] = 'number',
+ ['int'] = 'number',
+ ['short'] = 'number',
+ ['long'] = 'number',
+ ['unsigned'] = 'number',
+ ['float'] = 'number',
+ ['double'] = 'number',
+ ['_cstring'] = 'string',
+ ['_userdata'] = 'userdata',
+ ['char*'] = 'string',
+ ['void*'] = 'userdata',
+ ['bool'] = 'boolean',
+ ['lua_Object'] = 'value',
+ ['LUA_VALUE'] = 'value', -- for compatibility with tolua 4.0
+ ['lua_State*'] = 'state',
+ ['_lstate'] = 'state',
+ ['lua_Function'] = 'value',
+}
+
+_basic_ctype = {
+ number = "lua_Number",
+ string = "const char*",
+ userdata = "void*",
+ boolean = "bool",
+ value = "int",
+ state = "lua_State*",
+}
+
+-- functions the are used to do a 'raw push' of basic types
+_basic_raw_push = {}
+
+-- List of user defined types
+-- Each type corresponds to a variable name that stores its tag value.
+_usertype = {}
+
+-- List of types that have to be collected
+_collect = {}
+
+-- List of types
+_global_types = {n=0}
+_global_types_hash = {}
+
+-- list of classes
+_global_classes = {}
+
+-- List of enum constants
+_global_enums = {}
+
+-- List of auto renaming
+_renaming = {}
+function appendrenaming (s)
+ local b,e,old,new = strfind(s,"%s*(.-)%s*@%s*(.-)%s*$")
+ if not b then
+ error("#Invalid renaming syntax; it should be of the form: pattern@pattern")
+ end
+ tinsert(_renaming,{old=old, new=new})
+end
+
+function applyrenaming (s)
+ for i=1,getn(_renaming) do
+ local m,n = gsub(s,_renaming[i].old,_renaming[i].new)
+ if n ~= 0 then
+ return m
+ end
+ end
+ return nil
+end
+
+-- Error handler
+function tolua_error (s,f)
+if _curr_code then
+ print("***curr code for error is "..tostring(_curr_code))
+ print(debug.traceback())
+end
+ local out = _OUTPUT
+ _OUTPUT = _STDERR
+ if strsub(s,1,1) == '#' then
+ write("\n** tolua: "..strsub(s,2)..".\n\n")
+ if _curr_code then
+ local _,_,s = strfind(_curr_code,"^%s*(.-\n)") -- extract first line
+ if s==nil then s = _curr_code end
+ s = gsub(s,"_userdata","void*") -- return with 'void*'
+ s = gsub(s,"_cstring","char*") -- return with 'char*'
+ s = gsub(s,"_lstate","lua_State*") -- return with 'lua_State*'
+ write("Code being processed:\n"..s.."\n")
+ end
+ else
+ if not f then f = "(f is nil)" end
+ print("\n** tolua internal error: "..f..s..".\n\n")
+ return
+ end
+ _OUTPUT = out
+end
+
+function warning (msg)
+ if flags.q then return end
+ local out = _OUTPUT
+ _OUTPUT = _STDERR
+ write("\n** tolua warning: "..msg..".\n\n")
+ _OUTPUT = out
+end
+
+-- register an user defined type: returns full type
+function regtype (t)
+ --if isbasic(t) then
+ -- return t
+ --end
+ local ft = findtype(t)
+
+ if not _usertype[ft] then
+ return appendusertype(t)
+ end
+ return ft
+end
+
+-- return type name: returns full type
+function typevar(type)
+ if type == '' or type == 'void' then
+ return type
+ else
+ local ft = findtype(type)
+ if ft then
+ return ft
+ end
+ _usertype[type] = type
+ return type
+ end
+end
+
+-- check if basic type
+function isbasic (type)
+ local t = gsub(type,'const ','')
+ local m,t = applytypedef('', t)
+ local b = _basic[t]
+ if b then
+ return b,_basic_ctype[b]
+ end
+ return nil
+end
+
+-- split string using a token
+function split (s,t)
+ local l = {n=0}
+ local f = function (s)
+ l.n = l.n + 1
+ l[l.n] = s
+ return ""
+ end
+ local p = "%s*(.-)%s*"..t.."%s*"
+ s = gsub(s,"^%s+","")
+ s = gsub(s,"%s+$","")
+ s = gsub(s,p,f)
+ l.n = l.n + 1
+ l[l.n] = gsub(s,"(%s%s*)$","")
+ return l
+end
+
+-- splits a string using a pattern, considering the spacial cases of C code (templates, function parameters, etc)
+-- pattern can't contain the '^' (as used to identify the begining of the line)
+-- also strips whitespace
+function split_c_tokens(s, pat)
+
+ s = string.gsub(s, "^%s*", "")
+ s = string.gsub(s, "%s*$", "")
+
+ local token_begin = 1
+ local token_end = 1
+ local ofs = 1
+ local ret = {n=0}
+
+ function add_token(ofs)
+
+ local t = string.sub(s, token_begin, ofs)
+ t = string.gsub(t, "^%s*", "")
+ t = string.gsub(t, "%s*$", "")
+ ret.n = ret.n + 1
+ ret[ret.n] = t
+ end
+
+ while ofs <= string.len(s) do
+
+ local sub = string.sub(s, ofs, -1)
+ local b,e = string.find(sub, "^"..pat)
+ if b then
+ add_token(ofs-1)
+ ofs = ofs+e
+ token_begin = ofs
+ else
+ local char = string.sub(s, ofs, ofs)
+ if char == "(" or char == "<" then
+
+ local block
+ if char == "(" then block = "^%b()" end
+ if char == "<" then block = "^%b<>" end
+
+ b,e = string.find(sub, block)
+ if not b then
+ -- unterminated block?
+ ofs = ofs+1
+ else
+ ofs = ofs + e
+ end
+
+ else
+ ofs = ofs+1
+ end
+ end
+
+ end
+ add_token(ofs)
+ --if ret.n == 0 then
+
+ -- ret.n=1
+ -- ret[1] = ""
+ --end
+
+ return ret
+
+end
+
+-- concatenate strings of a table
+function concat (t,f,l,jstr)
+ jstr = jstr or " "
+ local s = ''
+ local i=f
+ while i<=l do
+ s = s..t[i]
+ i = i+1
+ if i <= l then s = s..jstr end
+ end
+ return s
+end
+
+-- concatenate all parameters, following output rules
+function concatparam (line, ...)
+ local i=1
+ while i<=arg.n do
+ if _cont and not strfind(_cont,'[%(,"]') and
+ strfind(arg[i],"^[%a_~]") then
+ line = line .. ' '
+ end
+ line = line .. arg[i]
+ if arg[i] ~= '' then
+ _cont = strsub(arg[i],-1,-1)
+ end
+ i = i+1
+ end
+ if strfind(arg[arg.n],"[%/%)%;%{%}]$") then
+ _cont=nil line = line .. '\n'
+ end
+ return line
+end
+
+-- output line
+function output (...)
+ local i=1
+ while i<=arg.n do
+ if _cont and not strfind(_cont,'[%(,"]') and
+ strfind(arg[i],"^[%a_~]") then
+ write(' ')
+ end
+ write(arg[i])
+ if arg[i] ~= '' then
+ _cont = strsub(arg[i],-1,-1)
+ end
+ i = i+1
+ end
+ if strfind(arg[arg.n],"[%/%)%;%{%}]$") then
+ _cont=nil write('\n')
+ end
+end
+
+function get_property_methods(ptype, name)
+
+ if get_property_methods_hook and get_property_methods_hook(ptype,name) then
+ return get_property_methods_hook(ptype, name)
+ end
+
+ if ptype == "default" then -- get_name, set_name
+ return "get_"..name, "set_"..name
+ end
+
+ if ptype == "qt" then -- name, setName
+ return name, "set"..string.upper(string.sub(name, 1, 1))..string.sub(name, 2, -1)
+ end
+
+ if ptype == "overload" then -- name, name
+ return name,name
+ end
+
+ return nil
+end
+
+-------------- the hooks
+
+-- called right after processing the $[ichl]file directives,
+-- right before processing anything else
+-- takes the package object as the parameter
+function preprocess_hook(p)
+ -- p.code has all the input code from the pkg
+end
+
+
+-- called for every $ifile directive
+-- takes a table with a string called 'code' inside, the filename, and any extra arguments
+-- passed to $ifile. no return value
+function include_file_hook(t, filename, ...)
+
+end
+
+-- called after processing anything that's not code (like '$renaming', comments, etc)
+-- and right before parsing the actual code.
+-- takes the Package object with all the code on the 'code' key. no return value
+function preparse_hook(package)
+
+end
+
+-- called before starting output
+function pre_output_hook(package)
+
+end
+
+-- called after writing all the output.
+-- takes the Package object
+function post_output_hook(package)
+
+end
+
+
+-- called from 'get_property_methods' to get the methods to retrieve a property
+-- according to its type
+function get_property_methods_hook(property_type, name)
+
+end
+
+-- called from ClassContainer:doparse with the string being parsed
+-- return nil, or a substring
+function parser_hook(s)
+
+ return nil
+end
+
+-- called from classFunction:supcode, before the call to the function is output
+function pre_call_hook(f)
+
+end
+
+-- called from classFunction:supcode, after the call to the function is output
+function post_call_hook(f)
+
+end
+
+-- called before the register code is output
+function pre_register_hook(package)
+
+end
+
+-- called to output an error message
+function output_error_hook(...)
+ return string.format(...)
+end
+
+-- custom pushers
+
+_push_functions = {}
+_is_functions = {}
+_to_functions = {}
+
+_base_push_functions = {}
+_base_is_functions = {}
+_base_to_functions = {}
+
+local function search_base(t, funcs)
+
+ local class = _global_classes[t]
+
+ while class do
+ if funcs[class.type] then
+ return funcs[class.type]
+ end
+ class = _global_classes[class.btype]
+ end
+ return nil
+end
+
+function get_push_function(t)
+ return _push_functions[t] or search_base(t, _base_push_functions) or "tolua_pushusertype"
+end
+
+function get_to_function(t)
+ return _to_functions[t] or search_base(t, _base_to_functions) or "tolua_tousertype"
+end
+
+function get_is_function(t)
+ return _is_functions[t] or search_base(t, _base_is_functions) or "tolua_isusertype"
+end