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Correctly generate valid CPP reflected metadata

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This commit is contained in:
Doyle 2019-02-23 12:03:36 +11:00
parent dc73407721
commit a0caf1296d
1 changed files with 85 additions and 73 deletions
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150
Code/DqnReflect.h
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@ -4,7 +4,7 @@
#define DQN_REFLECT
#define DQN_REFLECT_META(...)
enum struct DqnReflect_StructMemberMetadataType { String, Int, Float };
enum DqnReflect_StructMemberMetadataType { String, Int, Float };
struct DqnReflect_StructMemberMetadata
{
@ -22,23 +22,18 @@ struct DqnReflect_StructMember
char const *name;
int name_len;
#if 0
DqnReflect_StructMemberMetadata *metadata;
DqnReflect_StructMemberMetadata const *metadata;
int metadata_len;
#endif
};
struct DqnReflect_Struct
{
char const *name;
int name_len;
DqnReflect_StructMember *members;
DqnReflect_StructMember const *members;
int members_len;
};
// #include "../Data/DqnReflect_TestData.h"
// #include "Output.cpp"
//
// HOW TO REFLECT ANNOTATED CODE
// Define in the preprocessor, DQN_REFLECT_IMPLEMENTATION and compile
@ -828,9 +823,75 @@ void ParseCPPStruct(CPPTokeniser *tokeniser)
}
}
// TODO(doyle): Don't support anonymous/nameless structs yet
if (name.len == 0)
return;
//
// Write DqnReflect_StructMemberMetadata Definition
//
for (CPPDeclLinkedList<CPPVariableDecl> const *member = struct_members; member; member = member->next)
{
CPPVariableDecl const *decl = &member->value;
if (member->metadata_array.len <= 0)
continue;
CPPTokeniser_SprintfToFile(
tokeniser,
"DqnReflect_StructMemberMetadata const DqnReflect_%.*s_%.*s_StructMemberMetadata[] =\n{\n",
name.len,
name.str,
decl->name.len,
decl->name.str);
tokeniser->indent_level++;
for (CPPReflectMetadataEntry const &entry : member->metadata_array)
{
CPPTokeniser_SprintfToFile(tokeniser, "{\n");
tokeniser->indent_level++;
CPPTokeniser_SprintfToFile(tokeniser, "DqnReflect_StructMemberMetadataType::String,\n");
// metadata->key
CPPTokeniser_SprintfToFile(tokeniser, "STR_AND_LEN(\"%.*s\"),\n", entry.key.len, entry.key.str);
// metadata->value
CPPTokeniser_SprintfToFile(tokeniser, "STR_AND_LEN(\"%.*s\"),\n", entry.value.len, entry.value.str);
tokeniser->indent_level--;
CPPTokeniser_SprintfToFile(tokeniser, "},\n");
}
tokeniser->indent_level--;
CPPTokeniser_SprintfToFile(tokeniser, "};\n\n");
}
//
// Write DqnReflect_StructMembers Definition
//
{
CPPTokeniser_SprintfToFile(tokeniser, "DqnReflect_StructMember const DqnReflect_%.*s_StructMembers[] =\n{\n", name.len, name.str);
tokeniser->indent_level++;
for (CPPDeclLinkedList<CPPVariableDecl> const *member = struct_members; member; member = member->next)
{
CPPVariableDecl const *decl = &member->value;
CPPTokeniser_SprintfToFile(tokeniser, "{\n");
tokeniser->indent_level++;
CPPTokeniser_SprintfToFile(tokeniser, "STR_AND_LEN(\"%.*s\"),\n", decl->type.len, decl->type.str);
CPPTokeniser_SprintfToFile(tokeniser, "STR_AND_LEN(\"%.*s\"),\n", decl->name.len, decl->name.str);
if (member->metadata_array.len <= 0) CPPTokeniser_SprintfToFile(tokeniser, "nullptr, // metadata\n");
else CPPTokeniser_SprintfToFile(tokeniser, "DqnReflect_%.*s_%.*s_StructMemberMetadata,\n", name.len, name.str, decl->name.len, decl->name.str);
CPPTokeniser_SprintfToFile(tokeniser, "%d // metadata_len\n", member->metadata_array.len);
tokeniser->indent_level--;
CPPTokeniser_SprintfToFile(tokeniser, "},\n");
}
tokeniser->indent_level--;
CPPTokeniser_SprintfToFile(tokeniser, "};\n\n");
}
//
// Write DqnReflect_Struct Definition
//
@ -838,64 +899,8 @@ void ParseCPPStruct(CPPTokeniser *tokeniser)
CPPTokeniser_SprintfToFile(tokeniser, "DqnReflect_Struct const DqnReflect_%.*s_Struct =\n{\n", name.len, name.str);
tokeniser->indent_level++;
CPPTokeniser_SprintfToFile(tokeniser, "\"%.*s\", // name\n", name.len, name.str);
CPPTokeniser_SprintfToFile(tokeniser, "DQN_REFLECT_CHAR_COUNT(\"%.*s\"), // name_len\n", name.len, name.str);
CPPTokeniser_SprintfToFile(tokeniser, "{ // members\n");
tokeniser->indent_level++;
for (CPPDeclLinkedList<CPPVariableDecl> const *link = struct_members; link; link = link->next)
{
CPPVariableDecl const *decl = &link->value;
CPPTokeniser_SprintfToFile(tokeniser, "{\n");
tokeniser->indent_level++;
// member->type
CPPTokeniser_SprintfToFile(tokeniser, "\"%.*s\",\n", decl->type.len, decl->type.str);
CPPTokeniser_SprintfToFile(tokeniser, "DQN_REFLECT_CHAR_COUNT(\"%.*s\"),\n", decl->type.len, decl->type.str);
// member->name
CPPTokeniser_SprintfToFile(tokeniser, "\"%.*s\",\n", decl->name.len, decl->name.str);
CPPTokeniser_SprintfToFile(tokeniser, "DQN_REFLECT_CHAR_COUNT(\"%.*s\"),\n", decl->name.len, decl->name.str);
// member->metadata
if (1)
{
if (link->metadata_array.len <= 0)
{
CPPTokeniser_SprintfToFile(tokeniser, "nullptr, // metadata\n");
}
else
{
CPPTokeniser_SprintfToFile(tokeniser, "{ // metadata\n");
tokeniser->indent_level++;
for (CPPReflectMetadataEntry const &entry : link->metadata_array)
{
CPPTokeniser_SprintfToFile(tokeniser, "{\n");
tokeniser->indent_level++;
CPPTokeniser_SprintfToFile(tokeniser, "DqnReflect_StructMemberMetadataType::String,\n");
// metadata->key
CPPTokeniser_SprintfToFile(tokeniser, "\"%.*s\",\n", entry.key.len, entry.key.str);
CPPTokeniser_SprintfToFile(tokeniser, "DQN_REFLECT_CHAR_COUNT(\"%.*s\"),\n", entry.key.len, entry.key.str);
// metadata->value
CPPTokeniser_SprintfToFile(tokeniser, "\"%.*s\",\n", entry.value.len, entry.value.str);
CPPTokeniser_SprintfToFile(tokeniser, "DQN_REFLECT_CHAR_COUNT(\"%.*s\"),\n", entry.value.len, entry.value.str);
tokeniser->indent_level--;
CPPTokeniser_SprintfToFile(tokeniser, "},\n");
}
tokeniser->indent_level--;
CPPTokeniser_SprintfToFile(tokeniser, "},\n");
}
CPPTokeniser_SprintfToFile(tokeniser, "%d // metadata_len\n", link->metadata_array.len);
}
tokeniser->indent_level--;
CPPTokeniser_SprintfToFile(tokeniser, "},\n");
}
tokeniser->indent_level--;
CPPTokeniser_SprintfToFile(tokeniser, "},\n");
CPPTokeniser_SprintfToFile(tokeniser, "STR_AND_LEN(\"%.*s\"),\n", name.len, name.str);
CPPTokeniser_SprintfToFile(tokeniser, "DqnReflect_%.*s_StructMembers, // members\n", name.len, name.str);
CPPTokeniser_SprintfToFile(tokeniser, "%d // members_len\n", struct_members_len);
tokeniser->indent_level--;
@ -949,8 +954,10 @@ int main(int argc, char *argv[])
"#define DQN_REFLECT_GENERATED_H\n\n"
"// This is an auto generated file using Dqn_Reflect\n"
"\n"
"#define DQN_REFLECT_ARRAY_COUNT(array) sizeof(array)/sizeof((array)[0])\n"
"#define DQN_REFLECT_CHAR_COUNT(str) (DQN_REFLECT_ARRAY_COUNT(str) - 1)\n"
" // NOTE: These macros are undefined at the end of the file so to not pollute namespace\n"
"#define ARRAY_COUNT(array) sizeof(array)/sizeof((array)[0])\n"
"#define CHAR_COUNT(str) (ARRAY_COUNT(str) - 1)\n"
"#define STR_AND_LEN(str) str, CHAR_COUNT(str)\n"
"\n");
for (usize arg_index = 1; arg_index < argc; ++arg_index)
@ -1152,7 +1159,12 @@ int main(int argc, char *argv[])
file_include_contents_hash_define);
}
fprintf(output_file, "#endif // DQN_REFLECT_GENERATED_H\n");
fprintf(output_file,
"#undef ARRAY_COUNT\n"
"#undef CHAR_COUNT\n"
"#undef STR_AND_LEN\n"
"#endif // DQN_REFLECT_GENERATED_H\n"
);
fclose(output_file);
return 0;