/* 4coder_metadata_generator.cpp - A preprocessor program for generating a list of commands and their descriptions. */ // TOP #define COMMAND_METADATA_OUT "generated/command_metadata.h" #include "4coder_base_types.h" #include "4coder_token.h" #include "generated/lexer_cpp.h" #include "4coder_base_types.cpp" #include "4coder_stringf.cpp" #include "4coder_malloc_allocator.cpp" #include "4coder_token.cpp" #include "generated/lexer_cpp.cpp" #include "4coder_file.h" #include #include #include #define str_to_l_c(s) ((i32)(s).size), ((s).str) #define str_to_c_l(s) ((s).str), ((i32)(s).size) /////////////////////////////// struct Line_Column_Coordinates{ i64 line; i64 column; }; static Line_Column_Coordinates line_column_coordinates(String_Const_u8 text, i64 pos){ if (pos < 0){ pos = 0; } if (pos > (i64)text.size){ pos = (i64)text.size; } Line_Column_Coordinates coords = {}; coords.line = 1; coords.column = 1; u8 *end = text.str + pos; for (u8 *p = text.str; p < end; ++p){ if (*p == '\n'){ ++coords.line; coords.column = 1; } else{ ++coords.column; } } return(coords); } static i64 line_number(String_Const_u8 text, i64 pos){ Line_Column_Coordinates coords = line_column_coordinates(text, pos); return(coords.line); } static void error(u8 *source_name, String_Const_u8 text, i64 pos, u8 *msg){ Line_Column_Coordinates coords = line_column_coordinates(text, pos); fprintf(stdout, "%s:%lld:%lld: %s\n", source_name, coords.line, coords.column, msg); fflush(stdout); } /////////////////////////////// struct Reader{ Arena *error_arena; u8 *source_name; String_Const_u8 text; Token_Array tokens; Token *ptr; }; struct Temp_Read{ Reader *reader; Token *pos; }; static Reader make_reader(Token_Array array, u8 *source_name, String_Const_u8 text){ Reader reader = {}; reader.tokens = array; reader.ptr = array.tokens; reader.source_name = source_name; reader.text = text; return(reader); } static Token prev_token(Reader *reader){ Token result = {}; for (;;){ if (reader->ptr > reader->tokens.tokens + reader->tokens.count){ reader->ptr = reader->tokens.tokens + reader->tokens.count; } if (reader->ptr > reader->tokens.tokens){ --reader->ptr; result = *reader->ptr; } else{ reader->ptr = reader->tokens.tokens; memset(&result, 0, sizeof(result)); break; } if (result.kind != TokenBaseKind_Comment && result.kind != TokenBaseKind_Whitespace && result.kind != TokenBaseKind_LexError){ break; } } return(result); } static Token get_token(Reader *reader){ Token result = {}; for (;;){ if (reader->ptr < reader->tokens.tokens){ reader->ptr = reader->tokens.tokens; } if (reader->ptr < reader->tokens.tokens + reader->tokens.count){ result = *reader->ptr; ++reader->ptr; } else{ reader->ptr = reader->tokens.tokens + reader->tokens.count; memset(&result, 0, sizeof(result)); result.pos = reader->text.size; break; } if (result.kind != TokenBaseKind_Comment && result.kind != TokenBaseKind_Whitespace && result.kind != TokenBaseKind_LexError){ break; } } return(result); } static Token peek_token(Reader *reader){ Token result = {}; if (reader->ptr < reader->tokens.tokens){ reader->ptr = reader->tokens.tokens; } if (reader->ptr >= reader->tokens.tokens + reader->tokens.count){ result.pos = reader->text.size; } else{ result = *reader->ptr; } return(result); } static i64 peek_pos(Reader *reader){ Token token = peek_token(reader); return(token.pos); } static i64 line_number(Reader *reader, i64 pos){ return(line_number(reader->text, pos)); } static void error(Reader *reader, i64 pos, u8 *msg){ error(reader->source_name, reader->text, pos, msg); } static Temp_Read begin_temp_read(Reader *reader){ Temp_Read temp = {}; temp.reader = reader; temp.pos = reader->ptr; return(temp); } static void end_temp_read(Temp_Read temp){ temp.reader->ptr = temp.pos; } /////////////////////////////// static String_Const_u8 token_str(String_Const_u8 text, Token token){ String_Const_u8 str = string_prefix(string_skip(text, token.pos), token.size); return(str); } /////////////////////////////// typedef i32 Meta_Command_Entry_Kind; enum{ MetaCommandEntryKind_ERROR, MetaCommandEntryKind_Normal, MetaCommandEntryKind_UI, }; struct Meta_Command_Entry{ Meta_Command_Entry *next; Meta_Command_Entry_Kind kind; String_Const_u8 name; u8 *source_name; i64 line_number; union{ struct{ String_Const_u8 doc; } docstring; }; }; struct Meta_Command_Entry_Arrays{ Meta_Command_Entry *first_doc_string; Meta_Command_Entry *last_doc_string; i32 doc_string_count; Meta_Command_Entry *first_ui; Meta_Command_Entry *last_ui; i32 ui_count; }; /////////////////////////////// static i32 quick_sort_part(Meta_Command_Entry **entries, i32 first, i32 one_past_last){ i32 pivot = one_past_last - 1; String_Const_u8 pivot_key = entries[pivot]->name; i32 j = first; for (i32 i = first; i < pivot; ++i){ if (string_compare(entries[i]->name, pivot_key) < 0){ Swap(Meta_Command_Entry*, entries[i], entries[j]); ++j; } } Swap(Meta_Command_Entry*, entries[j], entries[pivot]); return(j); } static void quick_sort(Meta_Command_Entry **entries, i32 first, i32 one_past_last){ if (first + 1 < one_past_last){ i32 pivot = quick_sort_part(entries, first, one_past_last); quick_sort(entries, first, pivot); quick_sort(entries, pivot + 1, one_past_last); } } static Meta_Command_Entry** get_sorted_meta_commands(Arena *arena, Meta_Command_Entry *first, i32 count){ Meta_Command_Entry **entries = push_array(arena, Meta_Command_Entry*, count); i32 i = 0; for (Meta_Command_Entry *entry = first; entry != 0; entry = entry->next, ++i){ entries[i] = entry; } Assert(i == count); quick_sort(entries, 0, count); return(entries); } /////////////////////////////// static b32 has_duplicate_entry(Meta_Command_Entry *first, String_Const_u8 name){ b32 has_duplicate = false; for (Meta_Command_Entry *entry = first; entry != 0; entry = entry->next){ if (string_match(name, entry->name)){ has_duplicate = true; } } return(has_duplicate); } /////////////////////////////// static b32 require_key_identifier(Reader *reader, String_Const_u8 string, i64 *opt_pos_out){ b32 success = false; Token token = get_token(reader); if (token.kind == TokenBaseKind_Identifier){ String_Const_u8 lexeme = token_str(reader->text, token); if (string_match(lexeme, string)){ success = true; if (opt_pos_out != 0){ *opt_pos_out = token.pos; } } } if (!success){ Temp_Memory temp = begin_temp(reader->error_arena); String_Const_u8 error_string = push_u8_stringf(reader->error_arena, "expected to find '%.*s'", string.size, string.str); error(reader, token.pos, error_string.str); end_temp(temp); } return(success); } static b32 require_key_identifier(Reader *reader, char *str, i64 *opt_pos_out){ return(require_key_identifier(reader, SCu8(str), opt_pos_out)); } static b32 require_key_identifier(Reader *reader, String_Const_u8 string){ return(require_key_identifier(reader, string, 0)); } static b32 require_key_identifier(Reader *reader, char *str){ return(require_key_identifier(reader, SCu8(str), 0)); } static b32 require_open_parenthese(Reader *reader, i64 *opt_pos_out){ b32 success = false; Token token = get_token(reader); if (token.kind == TokenBaseKind_ParentheticalOpen){ success = true; if (opt_pos_out != 0){ *opt_pos_out = token.pos; } } if (!success){ error(reader, token.pos, (u8*)"expected to find '('"); } return(success); } static b32 require_open_parenthese(Reader *reader){ return(require_open_parenthese(reader, 0)); } static b32 require_close_parenthese(Reader *reader, i64 *opt_pos_out){ b32 success = false; Token token = get_token(reader); if (token.kind == TokenBaseKind_ParentheticalClose){ success = true; if (opt_pos_out != 0){ *opt_pos_out = token.pos; } } if (!success){ error(reader, token.pos, (u8*)"expected to find ')'"); } return(success); } static b32 require_close_parenthese(Reader *reader){ return(require_close_parenthese(reader, 0)); } static b32 require_comma(Reader *reader, i64 *opt_pos_out){ b32 success = false; Token token = get_token(reader); if (token.sub_kind == TokenCppKind_Comma){ success = true; if (opt_pos_out != 0){ *opt_pos_out = token.pos; } } if (!success){ error(reader, token.pos, (u8*)"expected to find ','"); } return(success); } static b32 require_comma(Reader *reader){ return(require_comma(reader, 0)); } static b32 require_define(Reader *reader, i64 *opt_pos_out){ b32 success = false; Token token = get_token(reader); if (token.sub_kind == TokenCppKind_PPDefine){ success = true; if (opt_pos_out != 0){ *opt_pos_out = token.pos; } } if (!success){ error(reader, token.pos, (u8*)"expected to find '#define'"); } return(success); } static b32 require_define(Reader *reader){ return(require_define(reader, 0)); } static b32 extract_identifier(Reader *reader, String_Const_u8 *str_out, i64 *opt_pos_out){ b32 success = false; Token token = get_token(reader); if (token.kind == TokenBaseKind_Identifier){ String_Const_u8 lexeme = token_str(reader->text, token); *str_out = lexeme; success = true; if (opt_pos_out != 0){ *opt_pos_out = token.pos; } } if (!success){ error(reader, token.pos, (u8*)"expected to find an identifier"); } return(success); } static b32 extract_identifier(Reader *reader, String_Const_u8 *str_out){ return(extract_identifier(reader, str_out, 0)); } static b32 extract_integer(Reader *reader, String_Const_u8 *str_out, i64 *opt_pos_out){ b32 success = false; Token token = get_token(reader); if (token.kind == TokenBaseKind_LiteralInteger){ String_Const_u8 lexeme = token_str(reader->text, token); *str_out = lexeme; success = true; if (opt_pos_out != 0){ *opt_pos_out = token.pos; } } if (!success){ error(reader, token.pos, (u8*)"expected to find an integer"); } return(success); } static b32 extract_integer(Reader *reader, String_Const_u8 *str_out){ return(extract_integer(reader, str_out, 0)); } static b32 extract_string(Reader *reader, String_Const_u8 *str_out, i64 *opt_pos_out){ b32 success = false; Token token = get_token(reader); if (token.kind == TokenBaseKind_LiteralString){ String_Const_u8 lexeme = token_str(reader->text, token); *str_out = lexeme; success = true; if (opt_pos_out != 0){ *opt_pos_out = token.pos; } } if (!success){ error(reader, token.pos, (u8*)"expected to find a string literal"); } return(success); } static b32 extract_string(Reader *reader, String_Const_u8 *str_out){ return(extract_string(reader, str_out, 0)); } function Meta_Command_Entry_Kind parse_command_kind(String_Const_u8 kind){ Meta_Command_Entry_Kind result = MetaCommandEntryKind_ERROR; if (string_match(kind, string_u8_litexpr("Normal"))){ result = MetaCommandEntryKind_Normal; } else if (string_match(kind, string_u8_litexpr("UI"))){ result = MetaCommandEntryKind_UI; } return(result); } static b32 parse_documented_command(Arena *arena, Meta_Command_Entry_Arrays *arrays, Reader *reader){ String_Const_u8 name = {}; String_Const_u8 kind = {}; String_Const_u8 file_name = {}; String_Const_u8 line_number = {}; String_Const_u8 doc = {}; // Getting the command's name i64 start_pos = 0; if (!require_key_identifier(reader, "CUSTOM_COMMAND", &start_pos)){ return(false); } if (!require_open_parenthese(reader)){ return(false); } if (!extract_identifier(reader, &name)){ return(false); } if (!require_comma(reader)){ return(false); } if (!extract_string(reader, &file_name)){ return(false); } if (!require_comma(reader)){ return(false); } if (!extract_integer(reader, &line_number)){ return(false); } if (!require_comma(reader)){ return(false); } if (!extract_identifier(reader, &kind)){ return(false); } if (!require_close_parenthese(reader)){ return(false); } // Getting the command's doc string if (!require_key_identifier(reader, "CUSTOM_DOC")){ return(false); } if (!require_open_parenthese(reader)){ return(false); } i64 doc_pos = 0; if (!extract_string(reader, &doc, &doc_pos)){ return(false); } if (doc.size < 1 || doc.str[0] != '"'){ error(reader, doc_pos, (u8*)"warning: doc strings with string literal prefixes not allowed"); return(false); } if (!require_close_parenthese(reader)){ return(false); } if (has_duplicate_entry(arrays->first_doc_string, name)){ error(reader, start_pos, (u8*)"warning: multiple commands with the same name and separate doc strings, skipping this one"); return(false); } doc = string_chop(string_skip(doc, 1), 1); String_Const_u8 file_name_unquoted = string_chop(string_skip(file_name, 1), 1); String_Const_u8 source_name = string_interpret_escapes(arena, file_name_unquoted); Meta_Command_Entry *new_entry = push_array(arena, Meta_Command_Entry, 1); new_entry->kind = parse_command_kind(kind); new_entry->name = name; new_entry->source_name = source_name.str; new_entry->line_number = (i32)string_to_integer(line_number, 10); new_entry->docstring.doc = doc; sll_queue_push(arrays->first_doc_string, arrays->last_doc_string, new_entry); ++arrays->doc_string_count; return(true); } /////////////////////////////// static void parse_text(Arena *arena, Meta_Command_Entry_Arrays *entry_arrays, u8 *source_name, String_Const_u8 text){ Token_List token_list = lex_full_input_cpp(arena, text); Token_Array array = token_array_from_list(arena, &token_list); Reader reader_ = make_reader(array, source_name, text); Reader *reader = &reader_; for (;;){ Token token = get_token(reader); if (token.kind == TokenBaseKind_Identifier){ String_Const_u8 lexeme = token_str(text, token); b32 in_preproc_body = HasFlag(token.flags, TokenBaseFlag_PreprocessorBody); if (!in_preproc_body && string_match(lexeme, string_u8_litexpr("CUSTOM_DOC"))){ Temp_Read temp_read = begin_temp_read(reader); b32 found_start_pos = false; for (i32 R = 0; R < 12; ++R){ Token p_token = prev_token(reader); if (p_token.kind == TokenBaseKind_Identifier){ String_Const_u8 p_lexeme = token_str(text, p_token); if (string_match(p_lexeme, string_u8_litexpr("CUSTOM_COMMAND"))){ found_start_pos = true; break; } } if (p_token.kind == TokenBaseKind_EOF){ break; } } if (!found_start_pos){ end_temp_read(temp_read); } else{ if (!parse_documented_command(arena, entry_arrays, reader)){ end_temp_read(temp_read); } } } else if (string_match(lexeme, string_u8_litexpr("CUSTOM_UI_COMMAND"))){ } } if (token.kind == TokenBaseKind_EOF){ break; } } } static void parse_file(Arena *arena, Meta_Command_Entry_Arrays *entry_arrays, Filename_Character *name_, i32 len){ char *name = unencode(arena, name_, len); if (name == 0){ if (sizeof(*name_) == 2){ fprintf(stdout, "warning: could not unencode file name %ls - file skipped\n", (wchar_t*)name_); } else{ fprintf(stdout, "warning: could not unencode file name %s - file skipped\n", (char*)name_); } return; } String_Const_u8 text = file_dump(arena, name); parse_text(arena, entry_arrays, (u8*)name, text); } static void parse_files_by_pattern(Arena *arena, Meta_Command_Entry_Arrays *entry_arrays, Filename_Character *pattern, b32 recursive){ Cross_Platform_File_List list = get_file_list(arena, pattern, filter_all); for (i32 i = 0; i < list.count; ++i){ Cross_Platform_File_Info *info = &list.info[i]; String_Const_Any info_name = SCany(info->name, info->len); Temp_Memory temp = begin_temp(arena); String_Const_u8 info_name_ascii = string_u8_from_any(arena, info_name); b32 is_generated = string_match(info_name_ascii, string_u8_litexpr("4coder_generated")); end_temp(temp); if (info->is_folder && is_generated){ continue; } if (!recursive && info->is_folder){ continue; } i32 full_name_len = list.path_length + 1 + info->len; if (info->is_folder){ full_name_len += 2; } Filename_Character *full_name = push_array(arena, Filename_Character, full_name_len + 1); if (full_name == 0){ fprintf(stdout, "fatal error: not enough memory to recurse to sub directory\n"); exit(1); } memmove(full_name, list.path_name, list.path_length*sizeof(*full_name)); full_name[list.path_length] = SLASH; memmove(full_name + list.path_length + 1, info->name, info->len*sizeof(*full_name)); full_name[full_name_len] = 0; if (!info->is_folder){ parse_file(arena, entry_arrays, full_name, full_name_len); } else{ full_name[full_name_len - 2] = SLASH; full_name[full_name_len - 1] = '*'; parse_files_by_pattern(arena, entry_arrays, full_name, true); } } } static void show_usage(int argc, char **argv){ char *name = "metadata_generator"; if (argc >= 1){ name = argv[0]; } fprintf(stdout, "usage:\n%s [-R] <4coder-root-directory> [ ...]\n", name); exit(0); } int main(int argc, char **argv){ if (argc < 3){ show_usage(argc, argv); } b32 recursive = string_match(SCu8(argv[1]), string_u8_litexpr("-R")); if (recursive && argc < 4){ show_usage(argc, argv); } Arena arena_ = make_arena_malloc(MB(1), 8); Arena *arena = &arena_; char *out_directory = argv[2]; i32 start_i = 2; if (recursive){ start_i = 3; } printf("metadata_generator "); for (i32 i = start_i; i < argc; i += 1){ printf("%s ", argv[i]); } printf("\n"); fflush(stdout); Meta_Command_Entry_Arrays entry_arrays = {}; for (i32 i = start_i; i < argc; ++i){ Filename_Character *pattern_name = encode(arena, argv[i]); parse_files_by_pattern(arena, &entry_arrays, pattern_name, recursive); } umem out_dir_len = cstring_length(out_directory); if (out_directory[0] == '"'){ out_directory += 1; out_dir_len -= 2; } { String_Const_u8 str = SCu8(out_directory, out_dir_len); str = string_skip_chop_whitespace(str); out_directory = (char*)str.str; out_dir_len = str.size; } umem len = out_dir_len + 1 + sizeof(COMMAND_METADATA_OUT) - 1; char *out_file_name = (char*)malloc(len + 1); memcpy(out_file_name, out_directory, out_dir_len); memcpy(out_file_name + out_dir_len, "/", 1); memcpy(out_file_name + out_dir_len + 1, COMMAND_METADATA_OUT, sizeof(COMMAND_METADATA_OUT)); FILE *out = fopen(out_file_name, "wb"); if (out != 0){ i32 entry_count = entry_arrays.doc_string_count; Meta_Command_Entry **entries = get_sorted_meta_commands(arena, entry_arrays.first_doc_string, entry_count); fprintf(out, "#if !defined(META_PASS)\n"); fprintf(out, "#define command_id(c) (fcoder_metacmd_ID_##c)\n"); fprintf(out, "#define command_metadata(c) (&fcoder_metacmd_table[command_id(c)])\n"); fprintf(out, "#define command_metadata_by_id(id) (&fcoder_metacmd_table[id])\n"); fprintf(out, "#define command_one_past_last_id %d\n", entry_arrays.doc_string_count); fprintf(out, "#if defined(CUSTOM_COMMAND_SIG)\n"); fprintf(out, "#define PROC_LINKS(x,y) x\n"); fprintf(out, "#else\n"); fprintf(out, "#define PROC_LINKS(x,y) y\n"); fprintf(out, "#endif\n"); fprintf(out, "#if defined(CUSTOM_COMMAND_SIG)\n"); for (i32 i = 0; i < entry_count; ++i){ Meta_Command_Entry *entry = entries[i]; fprintf(out, "CUSTOM_COMMAND_SIG(%.*s);\n", str_to_l_c(entry->name)); } fprintf(out, "#endif\n"); fprintf(out, "struct Command_Metadata{\n" "PROC_LINKS(Custom_Command_Function, void) *proc;\n" "b32 is_ui;\n" "char *name;\n" "i32 name_len;\n" "char *description;\n" "i32 description_len;\n" "char *source_name;\n" "i32 source_name_len;\n" "i32 line_number;\n" "};\n"); fprintf(out, "static Command_Metadata fcoder_metacmd_table[%d] = {\n", entry_arrays.doc_string_count); for (i32 i = 0; i < entry_count; ++i){ Meta_Command_Entry *entry = entries[i]; Temp_Memory temp = begin_temp(arena); String_Const_u8 source_name = SCu8(entry->source_name); String_Const_u8 printable = string_replace(arena, source_name, SCu8("\\"), SCu8("\\\\"), StringFill_NullTerminate); char *is_ui = "false"; if (entry->kind == MetaCommandEntryKind_UI){ is_ui = "true"; } fprintf(out, "{ PROC_LINKS(%.*s, 0), %s, \"%.*s\", %d, " "\"%.*s\", %d, \"%s\", %d, %lld },\n", string_expand(entry->name), is_ui, string_expand(entry->name), (i32)entry->name.size, string_expand(entry->docstring.doc), (i32)entry->docstring.doc.size, printable.str, (i32)source_name.size, entry->line_number); end_temp(temp); } fprintf(out, "};\n"); i32 id = 0; for (i32 i = 0; i < entry_count; ++i){ Meta_Command_Entry *entry = entries[i]; fprintf(out, "static i32 fcoder_metacmd_ID_%.*s = %d;\n", string_expand(entry->name), id); ++id; } fprintf(out, "#endif\n"); fclose(out); } else{ fprintf(stdout, "fatal error: could not open output file %s%s\n", out_directory, COMMAND_METADATA_OUT); } return(0); } // BOTTOM