Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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78 lines
2.5 KiB
78 lines
2.5 KiB
--[[ |
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upb - a minimalist implementation of protocol buffers. |
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Copyright (c) 2012 Google Inc. See LICENSE for details. |
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Author: Josh Haberman <jhaberman@gmail.com> |
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Tests for dump_cinit.lua. Runs first in a mode that generates |
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some C code for an extension. The C code is compiled and then |
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loaded by a second invocation of the test which checks that the |
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generated defs are as expected. |
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--]] |
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local dump_cinit = require "dump_cinit" |
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local upb = require "upb" |
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-- Once APIs for loading descriptors are fleshed out, we should replace this |
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-- with a descriptor for a meaty protobuf like descriptor.proto. |
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local symtab = upb.SymbolTable{ |
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upb.EnumDef{full_name = "MyEnum", |
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values = { |
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{"FOO", 1}, |
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{"BAR", 77} |
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} |
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}, |
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upb.MessageDef{full_name = "MyMessage", |
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fields = { |
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upb.FieldDef{label = upb.LABEL_REQUIRED, name = "field1", number = 1, |
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type = upb.TYPE_INT32}, |
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upb.FieldDef{label = upb.LABEL_REPEATED, name = "field2", number = 2, |
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type = upb.TYPE_ENUM, subdef_name = ".MyEnum"}, |
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upb.FieldDef{name = "field3", number = 3, type = upb.TYPE_MESSAGE, |
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subdef_name = ".MyMessage"} |
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} |
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} |
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} |
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if arg[1] == "generate" then |
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local f = assert(io.open(arg[2], "w")) |
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local f_h = assert(io.open(arg[2] .. ".h", "w")) |
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local appendc = dump_cinit.file_appender(f) |
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local appendh = dump_cinit.file_appender(f_h) |
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f:write('#include "lua.h"\n') |
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f:write('#define ELEMENTS(array) (sizeof(array)/sizeof(*array))\n') |
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f:write('#include "bindings/lua/upb.h"\n') |
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dump_cinit.dump_defs(symtab, "test", appendh, appendc) |
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f:write([[int luaopen_staticdefs(lua_State *L) { |
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lua_newtable(L); |
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for (int i = 0; i < ELEMENTS(test_msgs); i++) { |
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lupb_def_pushnewrapper(L, upb_upcast(&test_msgs[i]), NULL); |
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lua_rawseti(L, -2, i + 1); |
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} |
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for (int i = 0; i < ELEMENTS(test_enums); i++) { |
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lupb_def_pushnewrapper(L, upb_upcast(&test_enums[i]), NULL); |
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lua_rawseti(L, -2, ELEMENTS(test_msgs) + i + 1); |
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} |
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return 1; |
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}]]) |
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f_h:close() |
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f:close() |
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elseif arg[1] == "test" then |
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local staticdefs = require "staticdefs" |
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local msg = assert(staticdefs[1]) |
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local enum = assert(staticdefs[2]) |
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local f2 = assert(msg:field("field2")) |
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assert(msg:def_type() == upb.DEF_MSG) |
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assert(msg:full_name() == "MyMessage") |
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assert(enum:def_type() == upb.DEF_ENUM) |
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assert(enum:full_name() == "MyEnum") |
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assert(enum:value("FOO") == 1) |
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assert(f2:name() == "field2") |
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assert(f2:msgdef() == msg) |
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assert(f2:subdef() == enum) |
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else |
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error("Unknown operation " .. arg[1]) |
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end
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