253 lines
8.9 KiB
C++
253 lines
8.9 KiB
C++
/*
|
|
* Mr. 4th Dimention - Allen Webster
|
|
*
|
|
* 03.10.2019
|
|
*
|
|
* Parser that extracts an API from C++ source code.
|
|
*
|
|
*/
|
|
|
|
// TOP
|
|
|
|
#include "4coder_base_types.h"
|
|
#include "4ed_api_definition.h"
|
|
#include "4coder_token.h"
|
|
#include "generated/lexer_cpp.h"
|
|
|
|
#include "4coder_base_types.cpp"
|
|
#include "4ed_api_definition.cpp"
|
|
#include "4coder_stringf.cpp"
|
|
#include "4coder_malloc_allocator.cpp"
|
|
#include "4coder_token.cpp"
|
|
#include "generated/lexer_cpp.cpp"
|
|
#include "4coder_file.cpp"
|
|
|
|
////////////////////////////////
|
|
|
|
/*
|
|
function:
|
|
api ( <identifier> ) function <identifier> {*} <identifier> ( <param_list> )
|
|
|
|
param_list:
|
|
void |
|
|
<identifier> {*} <identifier> [, <identifier> {*} <identifier>]
|
|
|
|
anything_else:
|
|
***
|
|
|
|
api_source:
|
|
{function|anything_else} EOF
|
|
*/
|
|
|
|
function b32
|
|
api_parse__match(Token_Iterator *it, Token_Cpp_Kind sub_kind){
|
|
b32 match = false;
|
|
Token *token = token_it_read(it);
|
|
if (token->sub_kind == sub_kind){
|
|
if (token_it_inc(it)){
|
|
match = true;
|
|
}
|
|
}
|
|
return(match);
|
|
}
|
|
|
|
function b32
|
|
api_parse__match_identifier(Token_Iterator *it, String_Const_u8 source, String_Const_u8 *lexeme){
|
|
b32 match = false;
|
|
Token *token = token_it_read(it);
|
|
if (token->kind == TokenBaseKind_Identifier ||
|
|
token->kind == TokenBaseKind_Keyword){
|
|
if (token_it_inc(it)){
|
|
*lexeme = string_substring(source, Ii64(token));
|
|
match = true;
|
|
}
|
|
}
|
|
return(match);
|
|
}
|
|
|
|
function b32
|
|
api_parse__match_identifier(Token_Iterator *it, String_Const_u8 source, char *lexeme){
|
|
b32 match = false;
|
|
Token *token = token_it_read(it);
|
|
if ((token->kind == TokenBaseKind_Identifier ||
|
|
token->kind == TokenBaseKind_Keyword) &&
|
|
string_match(SCu8(lexeme), string_substring(source, Ii64(token)))){
|
|
if (token_it_inc(it)){
|
|
match = true;
|
|
}
|
|
}
|
|
return(match);
|
|
}
|
|
|
|
function String_Const_u8
|
|
api_parse__type_name_with_stars(Arena *arena, String_Const_u8 type, i32 star_counter){
|
|
if (star_counter > 0){
|
|
i32 type_full_size = type.size + star_counter;
|
|
u8 *type_buffer = push_array(arena, u8, type_full_size + 1);
|
|
block_copy(type_buffer, type.str, type.size);
|
|
block_fill_u8(type_buffer + type.size, star_counter, (u8)'*');
|
|
type_buffer[type_full_size] = 0;
|
|
type = SCu8(type_buffer, type_full_size);
|
|
}
|
|
return(type);
|
|
}
|
|
|
|
function void
|
|
api_parse_add_param(Arena *arena, API_Param_List *list, String_Const_u8 type, i32 star_counter, String_Const_u8 name){
|
|
type = api_parse__type_name_with_stars(arena, type, star_counter);
|
|
API_Param *param = push_array(arena, API_Param, 1);
|
|
sll_queue_push(list->first, list->last, param);
|
|
list->count += 1;
|
|
param->type_name = type;
|
|
param->name = name;
|
|
}
|
|
|
|
function void
|
|
api_parse_add_function(Arena *arena, API_Definition_List *list, String_Const_u8 api_name, String_Const_u8 func_name, String_Const_u8 type, i32 star_counter, API_Param_List param_list){
|
|
API_Definition *api = api_get_api(arena, list, api_name);
|
|
type = api_parse__type_name_with_stars(arena, type, star_counter);
|
|
API_Call *call = api_call(arena, api, func_name, type);
|
|
api_set_param_list(call, param_list);
|
|
}
|
|
|
|
function void
|
|
api_parse_source_add_to_list(Arena *arena, String_Const_u8 source, API_Definition_List *list){
|
|
Token_List token_list = lex_full_input_cpp(arena, source);
|
|
Token_Iterator token_it = token_iterator(token_iterator(0, &token_list));
|
|
|
|
for (;;){
|
|
Token *token = token_it_read(&token_it);
|
|
if (token->sub_kind == TokenCppKind_EOF){
|
|
break;
|
|
}
|
|
|
|
if (api_parse__match_identifier(&token_it, source, "api")){
|
|
String_Const_u8 api_name = {};
|
|
String_Const_u8 ret_type = {};
|
|
i32 ret_type_star_counter = 0;
|
|
String_Const_u8 func_name = {};
|
|
API_Param_List param_list = {};
|
|
|
|
b32 success = false;
|
|
if (api_parse__match(&token_it, TokenCppKind_ParenOp)){
|
|
if (api_parse__match_identifier(&token_it, source, &api_name)){
|
|
if (api_parse__match(&token_it, TokenCppKind_ParenCl)){
|
|
if (api_parse__match_identifier(&token_it, source, "function")){
|
|
if (api_parse__match_identifier(&token_it, source, &ret_type)){
|
|
for (;api_parse__match(&token_it, TokenCppKind_Star);){
|
|
ret_type_star_counter += 1;
|
|
}
|
|
if (api_parse__match_identifier(&token_it, source, &func_name)){
|
|
if (api_parse__match(&token_it, TokenCppKind_ParenOp)){
|
|
b32 param_list_success = false;
|
|
if (api_parse__match_identifier(&token_it, source, "void")){
|
|
param_list_success = true;
|
|
}
|
|
else{
|
|
for (;;){
|
|
String_Const_u8 type = {};
|
|
i32 star_counter = 0;
|
|
String_Const_u8 name = {};
|
|
if (api_parse__match_identifier(&token_it, source, &type)){
|
|
for (;api_parse__match(&token_it, TokenCppKind_Star);){
|
|
star_counter += 1;
|
|
}
|
|
if (api_parse__match_identifier(&token_it, source, &name)){
|
|
param_list_success = true;
|
|
}
|
|
else{
|
|
break;
|
|
}
|
|
}
|
|
else{
|
|
break;
|
|
}
|
|
if (param_list_success){
|
|
api_parse_add_param(arena, ¶m_list, type, star_counter, name);
|
|
}
|
|
if (api_parse__match(&token_it, TokenCppKind_Comma)){
|
|
param_list_success = false;
|
|
}
|
|
else{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (param_list_success){
|
|
if (api_parse__match(&token_it, TokenCppKind_ParenCl)){
|
|
success = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (success){
|
|
api_parse_add_function(arena, list, api_name, func_name, ret_type, ret_type_star_counter, param_list);
|
|
}
|
|
}
|
|
else{
|
|
if (!token_it_inc(&token_it)){
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
function API_Definition_List
|
|
api_parse_source(Arena *arena, String_Const_u8 source){
|
|
API_Definition_List list = {};
|
|
api_parse_source_add_to_list(arena, source, &list);
|
|
return(list);
|
|
}
|
|
|
|
////////////////////////////////
|
|
|
|
int
|
|
main(int argc, char **argv){
|
|
Arena arena = make_arena_malloc();
|
|
|
|
char *hack[] = {
|
|
"nothing",
|
|
"../code/4ed_api_implementation.cpp"
|
|
};
|
|
argv = hack;
|
|
argc = 2;
|
|
|
|
if (argc < 2){
|
|
printf("usage: <script> <source> {<source>}\n"
|
|
" source : file to load and parse into the output list\n");
|
|
exit(1);
|
|
}
|
|
|
|
API_Definition_List list = {};
|
|
for (i32 i = 1; i < argc; i += 1){
|
|
FILE *file = fopen(argv[i], "rb");
|
|
if (file == 0){
|
|
printf("error: could not open input file: '%s'\n", argv[i]);
|
|
continue;
|
|
}
|
|
|
|
String_Const_u8 text = file_load_all(&arena, file);
|
|
fclose(file);
|
|
|
|
if (text.size > 0){
|
|
api_parse_source_add_to_list(&arena, text, &list);
|
|
}
|
|
}
|
|
|
|
for (API_Definition *node = list.first;
|
|
node != 0;
|
|
node = node->next){
|
|
generate_api_master_list(&arena, node, stdout);
|
|
}
|
|
}
|
|
|
|
// BOTTOM
|
|
|