106 lines
2.4 KiB
Lua
106 lines
2.4 KiB
Lua
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-- Copyright 2019 云风 https://github.com/cloudwu . All rights reserved.
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-- License (the same with bgfx) : https://github.com/bkaradzic/bgfx/blob/master/LICENSE
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local idl = {}
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local all_types = {}
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local function typedef(_, typename)
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assert(all_types[typename] == nil, "Duplicate type")
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local t = {}
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all_types[typename] = t
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local function type_attrib(attrib)
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assert(type(attrib) == "table", "type attrib should be a table")
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for _, a in ipairs(attrib) do
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t[a] = true
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end
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end
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return function(cname)
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local typ = type(cname)
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if typ == "table" then
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type_attrib(cname)
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return
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end
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assert(typ == "string" , "type should be a string")
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t.cname = cname
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return type_attrib
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end
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end
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idl.typedef = setmetatable({} , { __index = typedef, __call = typedef })
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idl.types = all_types
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local all_funcs = {}
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local function duplicate_arg_name(name)
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error ("Duplicate arg name " .. name)
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end
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local function funcdef(_, funcname)
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local f = { name = funcname , args = {} }
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all_funcs[#all_funcs+1] = f
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local args
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local function args_desc(obj, args_name)
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obj[args_name] = duplicate_arg_name
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return function (fulltype)
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local arg = {
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name = "_" .. args_name,
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fulltype = fulltype,
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}
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f.args[#f.args+1] = arg
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local function arg_attrib(_, attrib )
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assert(type(attrib) == "table", "Arg attributes should be a table")
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for _, a in ipairs(attrib) do
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arg[a] = true
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end
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return args
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end
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return setmetatable( {} , {
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__index = function(_, name)
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return args_desc(obj, name)
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end
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, __call = arg_attrib } )
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end
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end
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args = setmetatable({}, { __index = args_desc })
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local function rettype(value)
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assert(type(value) == "string", "Need return type")
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f.ret = { fulltype = value }
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return args
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end
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local function funcdef(value)
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if type(value) == "table" then
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for k,v in pairs(value) do
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if type(k) == "number" then
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f[v] = true
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else
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f[k] = v
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end
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end
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return rettype
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end
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return rettype(value)
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end
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local function classfunc(_, methodname)
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f.class = f.name
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f.name = methodname
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return funcdef
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end
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return setmetatable({} , { __index = classfunc, __call = function(_, value) return funcdef(value) end })
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end
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idl.func = setmetatable({}, { __index = funcdef })
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idl.funcs = all_funcs
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idl.handle = "handle"
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idl.enum = "enum"
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idl.out = "out"
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idl.const = "const"
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return setmetatable(idl , { __index = function (_, keyword)
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error (tostring(keyword) .. " is invalid")
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end})
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