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-rw-r--r--src/Bindings/virtual_method_hooks.lua488
1 files changed, 7 insertions, 481 deletions
diff --git a/src/Bindings/virtual_method_hooks.lua b/src/Bindings/virtual_method_hooks.lua
index a52728ff8..14b0bcae5 100644
--- a/src/Bindings/virtual_method_hooks.lua
+++ b/src/Bindings/virtual_method_hooks.lua
@@ -1,7 +1,7 @@
--- flags
-local disable_virtual_hooks = true
-local enable_pure_virtual = true
-local default_private_access = false
+
+-- virtual_method_hooks.lua
+
+-- Implements additional processing that is done while generating the Lua bindings
@@ -9,29 +9,16 @@ local default_private_access = false
local access = {public = 0, protected = 1, private = 2}
-function preparse_hook(p)
- if default_private_access then
- -- we need to make all structs 'public' by default
- p.code = string.gsub(p.code, "(struct[^;]*{)", "%1\npublic:\n")
- end
-end
-function parser_hook(s)
+function parser_hook(s)
local container = classContainer.curr -- get the current container
- if default_private_access then
- if not container.curr_member_access and container.classtype == 'class' then
- -- default access for classes is private
- container.curr_member_access = access.private
- end
- end
-
- -- try labels (public, private, etc)
+ -- process access-specifying labels (public, private, etc)
do
- local b,e,label = string.find(s, "^%s*(%w*)%s*:[^:]") -- we need to check for [^:], otherwise it would match 'namespace::type'
+ local b, e, label = string.find(s, "^%s*(%w*)%s*:[^:]") -- we need to check for [^:], otherwise it would match 'namespace::type'
if b then
-- found a label, get the new access value from the global 'access' table
@@ -42,469 +29,8 @@ function parser_hook(s)
return strsub(s, e) -- normally we would use 'e+1', but we need to preserve the [^:]
end
end
-
-
- local ret = nil
-
- if disable_virtual_hooks then
-
- return ret
- end
-
- local b,e,decl,arg = string.find(s, "^%s*virtual%s+([^%({~]+)(%b())")
- local const
- if b then
- local ret = string.sub(s, e+1)
- if string.find(ret, "^%s*const") then
- const = "const"
- ret = string.gsub(ret, "^%s*const", "")
- end
- local purev = false
- if string.find(ret, "^%s*=%s*0") then
- purev = true
- ret = string.gsub(ret, "^%s*=%s*0", "")
- end
- ret = string.gsub(ret, "^%s*%b{}", "")
-
- local func = Function(decl, arg, const)
- func.pure_virtual = purev
- --func.access = access
- func.original_sig = decl
-
- local curflags = classContainer.curr.flags
- if not curflags.virtual_class then
-
- curflags.virtual_class = VirtualClass()
- end
- curflags.virtual_class:add(func)
- curflags.pure_virtual = curflags.pure_virtual or purev
-
- return ret
- end
-
- return ret
-end
-
-
--- class VirtualClass
-classVirtualClass = {
- classtype = 'class',
- name = '',
- base = '',
- type = '',
- btype = '',
- ctype = '',
-}
-classVirtualClass.__index = classVirtualClass
-setmetatable(classVirtualClass,classClass)
-
-function classVirtualClass:add(f)
-
- local parent = classContainer.curr
- pop()
-
- table.insert(self.methods, {f=f})
-
- local name,sig
-
- -- doble negative means positive
- if f.name == 'new' and ((not self.flags.parent_object.flags.pure_virtual) or (enable_pure_virtual)) then
-
- name = self.original_name
- elseif f.name == 'delete' then
- name = '~'..self.original_name
- else
- if f.access ~= 2 and (not f.pure_virtual) and f.name ~= 'new' and f.name ~= 'delete' then
- name = f.mod.." "..f.type..f.ptr.." "..self.flags.parent_object.lname.."__"..f.name
- end
- end
-
- if name then
- sig = name..self:get_arg_list(f, true)..";\n"
- push(self)
- sig = preprocess(sig)
- self:parse(sig)
- pop()
- end
-
- push(parent)
end
-function preprocess(sig)
-
- sig = gsub(sig,"([^%w_])void%s*%*","%1_userdata ") -- substitute 'void*'
- sig = gsub(sig,"([^%w_])void%s*%*","%1_userdata ") -- substitute 'void*'
- sig = gsub(sig,"([^%w_])char%s*%*","%1_cstring ") -- substitute 'char*'
- sig = gsub(sig,"([^%w_])lua_State%s*%*","%1_lstate ") -- substitute 'lua_State*'
-
- return sig
-end
-
-function classVirtualClass:get_arg_list(f, decl)
-
- local ret = ""
- local sep = ""
- local i=1
- while f.args[i] do
-
- local arg = f.args[i]
- if decl then
- local ptr
- if arg.ret ~= '' then
- ptr = arg.ret
- else
- ptr = arg.ptr
- end
- local def = ""
- if arg.def and arg.def ~= "" then
-
- def = " = "..arg.def
- end
- ret = ret..sep..arg.mod.." "..arg.type..ptr.." "..arg.name..def
- else
- ret = ret..sep..arg.name
- end
-
- sep = ","
- i = i+1
- end
-
- return "("..ret..")"
-end
-
-function classVirtualClass:add_parent_virtual_methods(parent)
-
- parent = parent or _global_classes[self.flags.parent_object.btype]
-
- if not parent then return end
-
- if parent.flags.virtual_class then
-
- local vclass = parent.flags.virtual_class
- for k,v in ipairs(vclass.methods) do
- if v.f.name ~= 'new' and v.f.name ~= 'delete' and (not self:has_method(v.f)) then
- table.insert(self.methods, {f=v.f})
- end
- end
- end
-
- parent = _global_classes[parent.btype]
- if parent then
- self:add_parent_virtual_methods(parent)
- end
-end
-
-function classVirtualClass:has_method(f)
-
- for k,v in pairs(self.methods) do
- -- just match name for now
- if v.f.name == f.name then
- return true
- end
- end
-
- return false
-end
-
-function classVirtualClass:add_constructors()
-
- local i=1
- while self.flags.parent_object[i] do
-
- local v = self.flags.parent_object[i]
- if getmetatable(v) == classFunction and (v.name == 'new' or v.name == 'delete') then
-
- self:add(v)
- end
-
- i = i+1
- end
-
-end
-
---[[
-function classVirtualClass:requirecollection(t)
-
- self:add_constructors()
- local req = classClass.requirecollection(self, t)
- if req then
- output('class ',self.name,";")
- end
- return req
-end
---]]
-
-function classVirtualClass:supcode()
-
- -- pure virtual classes can have no default constructors on gcc 4
-
- if self.flags.parent_object.flags.pure_virtual and not enable_pure_virtual then
- output('#if (__GNUC__ == 4) || (__GNUC__ > 4 ) // I hope this works on Microsoft Visual studio .net server 2003 XP Compiler\n')
- end
-
- local ns
- if self.prox.classtype == 'namespace' then
- output('namespace ',self.prox.name, " {")
- ns = true
- end
-
- output("class "..self.original_name.." : public "..self.btype..", public ToluaBase {")
-
- output("public:\n")
-
- self:add_parent_virtual_methods()
-
- self:output_methods(self.btype)
- self:output_parent_methods()
-
- self:add_constructors()
-
- -- no constructor for pure virtual classes
- if (not self.flags.parent_object.flags.pure_virtual) or enable_pure_virtual then
-
- self:output_constructors()
- end
-
- output("};\n\n")
-
- if ns then
- output("};")
- end
-
- classClass.supcode(self)
-
- if self.flags.parent_object.flags.pure_virtual and not enable_pure_virtual then
- output('#endif // __GNUC__ >= 4\n')
- end
-
- -- output collector for custom class if required
- if self:requirecollection(_collect) and _collect[self.type] then
-
- output('\n')
- output('/* function to release collected object via destructor */')
- output('#ifdef __cplusplus\n')
- --for i,v in pairs(collect) do
- i,v = self.type, _collect[self.type]
- output('\nstatic int '..v..' (lua_State* tolua_S)')
- output('{')
- output(' '..i..'* self = ('..i..'*) tolua_tousertype(tolua_S,1,0);')
- output(' delete self;')
- output(' return 0;')
- output('}')
- --end
- output('#endif\n\n')
- end
-
-end
-
-function classVirtualClass:register(pre)
-
- -- pure virtual classes can have no default constructors on gcc 4
- if self.flags.parent_object.flags.pure_virtual and not enable_pure_virtual then
- output('#if (__GNUC__ == 4) || (__GNUC__ > 4 )\n')
- end
-
- classClass.register(self, pre)
-
- if self.flags.parent_object.flags.pure_virtual and not enable_pure_virtual then
- output('#endif // __GNUC__ >= 4\n')
- end
-end
-
-
---function classVirtualClass:requirecollection(_c)
--- if self.flags.parent_object.flags.pure_virtual then
--- return false
--- end
--- return classClass.requirecollection(self, _c)
---end
-
-function classVirtualClass:output_parent_methods()
-
- for k,v in ipairs(self.methods) do
-
- if v.f.access ~= 2 and (not v.f.pure_virtual) and v.f.name ~= 'new' and v.f.name ~= 'delete' then
-
- local rettype = v.f.mod.." "..v.f.type..v.f.ptr.." "
- local parent_name = rettype..self.btype.."__"..v.f.name
-
- local par_list = self:get_arg_list(v.f, true)
- local var_list = self:get_arg_list(v.f, false)
-
- -- the parent's virtual function
- output("\t"..parent_name..par_list.." {")
-
- output("\t\treturn (",rettype,")"..self.btype.."::"..v.f.name..var_list..";")
- output("\t};")
- end
- end
-end
-
-function classVirtualClass:output_methods(btype)
-
- for k,v in ipairs(self.methods) do
-
- if v.f.name ~= 'new' and v.f.name ~= 'delete' then
-
- self:output_method(v.f, btype)
- end
- end
- output("\n")
-end
-
-function classVirtualClass:output_constructors()
-
- for k,v in ipairs(self.methods) do
-
- if v.f.name == 'new' then
-
- local par_list = self:get_arg_list(v.f, true)
- local var_list = self:get_arg_list(v.f, false)
-
- output("\t",self.original_name,par_list,":",self.btype,var_list,"{};")
- end
- end
-end
-
-function classVirtualClass:output_method(f, btype)
-
- if f.access == 2 then -- private
- return
- end
-
- local ptr
- if f.ret ~= '' then
- ptr = f.ret
- else
- ptr = f.ptr
- end
-
- local rettype = f.mod.." "..f.type..f.ptr.." "
- local par_list = self:get_arg_list(f, true)
- local var_list = self:get_arg_list(f, false)
-
- if string.find(rettype, "%s*LuaQtGenericFlags%s*") then
-
- _,_,rettype = string.find(f.original_sig, "^%s*([^%s]+)%s+")
- end
-
- -- the caller of the lua method
- output("\t"..rettype.." "..f.name..par_list..f.const.." {")
- local fn = f.cname
- if f.access == 1 then
- fn = "NULL"
- end
- output('\t\tif (push_method("',f.lname,'", ',fn,')) {')
-
- --if f.type ~= 'void' then
- -- output("\t\t\tint top = lua_gettop(lua_state)-1;")
- --end
-
- -- push the parameters
- local argn = 0
- for i,arg in ipairs(f.args) do
- if arg.type ~= 'void' then
- local t,ct = isbasic(arg.type)
- if t and t ~= '' then
- if arg.ret == "*" then
- t = 'userdata'
- ct = 'void*'
- end
- output("\t\t\ttolua_push"..t.."(lua_state, ("..ct..")"..arg.name..");");
- else
- local m = arg.ptr
- if m and m~= "" then
- if m == "*" then m = "" end
- output("\t\t\ttolua_pushusertype(lua_state, (void*)"..m..arg.name..", \""..arg.type.."\");")
- else
- output("\t\t\tvoid* tolua_obj" .. argn .." = (void*)new "..arg.type.."("..arg.name..");\n")
- output('\t\t\ttolua_pushusertype_and_takeownership(lua_state, tolua_obj' .. argn .. ', "'..arg.type..'");\n')
- end
- end
- argn = argn+1
- end
- end
-
- -- call the function
- output("\t\t\tToluaBase::dbcall(lua_state, ",argn+1,", ")
-
- -- return value
- if f.type ~= 'void' then
- output("1);")
-
- local t,ct = isbasic(f.type)
- if t and t ~= '' then
- --output("\t\t\treturn ("..rettype..")tolua_to"..t.."(lua_state, top, 0);")
- output("\t\t\t",rettype,"tolua_ret = ("..rettype..")tolua_to"..t.."(lua_state, -1, 0);")
- else
-
- local mod = ""
- if f.ptr ~= "*" then
- mod = "*("..f.type.."*)"
- end
-
- --output("\t\t\treturn ("..rettype..")"..mod.."tolua_tousertype(lua_state, top, 0);")
- output("\t\t\t",rettype,"tolua_ret = ("..rettype..")"..mod.."tolua_tousertype(lua_state, -1, 0);")
- end
- output("\t\t\tlua_pop(lua_state, 1);")
- output("\t\t\treturn tolua_ret;")
- else
- output("0);")
- end
-
- -- handle non-implemeted function
- output("\t\t} else {")
-
- if f.pure_virtual then
-
- output('\t\t\tif (lua_state)')
- --output('\t\t\t\ttolua_error(lua_state, "pure-virtual method '..btype.."::"..f.name..' not implemented.", NULL);')
- output('\t\t\t\tLOG("pure-virtual method '..btype.."::"..f.name..' not implemented.");')
- output('\t\t\telse {')
- output('\t\t\t\tLOG("pure-virtual method '..btype.."::"..f.name..' called with no lua_state. Aborting");')
- output('\t\t\t\t::abort();')
- output('\t\t\t};')
- if( rettype == " std::string " ) then
- output('\t\t\treturn "";')
- else
- output('\t\t\treturn (',rettype,')0;')
- end
- else
-
- output('\t\t\treturn (',rettype,')',btype,'::',f.name,var_list,';')
- end
-
- output("\t\t};")
-
- output("\t};")
-end
-
-function VirtualClass()
-
- local parent = classContainer.curr
- pop()
-
- local name = "Lua__"..parent.original_name
-
- local c = _Class(_Container{name=name, base=parent.name, extra_bases=nil})
- setmetatable(c, classVirtualClass)
-
- local ft = getnamespace(c.parent)..c.original_name
- append_global_type(ft, c)
-
- push(parent)
-
- c.flags.parent_object = parent
- c.methods = {}
-
- push(c)
- c:parse("\nvoid tolua__set_instance(_lstate L, lua_Object lo);\n")
- pop()
-
- return c
-end
-
-