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Add binary schema reflection (#7932)

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* Add binary schema reflection

* remove not-used parameter

* move logic from object API to base API

* forward declare

* remove duplicate code gen that was stompping on the edits

* reduce to just typedef generation

* fixed bazel rules to not stomp

* more bazel fixes to support additional generated files
This commit is contained in:
Derek Bailey
2023-05-04 16:12:45 -07:00
committed by GitHub
parent 67084b9921
commit 01a7bc3c58
6 changed files with 83 additions and 11 deletions
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22
src/idl_gen_cpp.cpp
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@@ -280,6 +280,16 @@ class CppGenerator : public BaseGenerator {
if (!opts_.cpp_includes.empty()) { code_ += ""; }
}
void GenEmbeddedIncludes() {
if (parser_.opts.binary_schema_gen_embed && parser_.root_struct_def_) {
const std::string file_path =
GeneratedFileName(opts_.include_prefix, file_name_ + "_bfbs", opts_);
code_ += "// For access to the binary schema that produced this file.";
code_ += "#include \"" + file_path + "\"";
code_ += "";
}
}
std::string EscapeKeyword(const std::string &name) const {
return keywords_.find(name) == keywords_.end() ? name : name + "_";
}
@@ -408,6 +418,7 @@ class CppGenerator : public BaseGenerator {
if (opts_.include_dependence_headers) { GenIncludeDependencies(); }
GenExtraIncludes();
GenEmbeddedIncludes();
FLATBUFFERS_ASSERT(!cur_name_space_);
@@ -2152,6 +2163,15 @@ class CppGenerator : public BaseGenerator {
code_ += "";
}
// Adds a typedef to the binary schema type so one could get the bfbs based
// on the type at runtime.
void GenBinarySchemaTypeDef(const StructDef *struct_def) {
if (struct_def && opts_.binary_schema_gen_embed) {
code_ += " typedef " + WrapInNameSpace(*struct_def) +
"BinarySchema BinarySchema;";
}
}
void GenNativeTablePost(const StructDef &struct_def) {
if (opts_.gen_compare) {
const auto native_name = NativeName(Name(struct_def), &struct_def, opts_);
@@ -2687,6 +2707,8 @@ class CppGenerator : public BaseGenerator {
code_ += " typedef {{NATIVE_NAME}} NativeTableType;";
}
code_ += " typedef {{STRUCT_NAME}}Builder Builder;";
GenBinarySchemaTypeDef(parser_.root_struct_def_);
if (opts_.g_cpp_std >= cpp::CPP_STD_17) { code_ += " struct Traits;"; }
if (opts_.mini_reflect != IDLOptions::kNone) {
code_ +=