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/* Copyright (C) 2024 Aryadev Chavali
* You may distribute and modify this code under the terms of the
* GPLv2 license. You should have received a copy of the GPLv2
* license with this file. If not, please write to:
* aryadev@aryadevchavali.com.
* Created: 2024-04-14
* Author: Aryadev Chavali
* Description: Entrypoint for assembly program
*/
#include <algorithm>
#include <cstdio>
#include <iostream>
#include <optional>
#include <string>
#include <tuple>
#include <vector>
extern "C"
{
#include <lib/inst.h>
}
#include "./base.hpp"
#include "./lexer.hpp"
#include "./preprocesser.hpp"
using std::cout, std::cerr, std::endl;
using std::pair, std::string, std::string_view, std::vector;
void usage(const char *program_name, FILE *fp)
{
fprintf(fp,
"Usage: %s FILE OUT-FILE\n"
"\tFILE: Source code to compile\n"
"\tOUT-FILE: Name of file to store bytecode\n",
program_name);
}
int main(int argc, const char *argv[])
{
if (argc == 1 || argc > 3)
{
usage(argv[0], stderr);
return -1;
}
int ret = 0;
const char *source_name = argv[1];
const char *out_name = argv[2];
(void)out_name;
#if VERBOSE >= 1
printf("[%sASSEMBLER%s]: Assembling `%s` to `%s`\n", TERM_YELLOW, TERM_RESET,
source_name, out_name);
#endif
auto file_source = read_file(source_name);
#if VERBOSE >= 1
printf("[%sASSEMBLER%s]: `%s` -> %lu bytes\n", TERM_YELLOW, TERM_RESET,
source_name, file_source.has_value() ? file_source.value().size() : 0);
#endif
string source_str;
string_view original;
string_view src;
vector<token_t *> tokens, preprocessed_tokens;
lerr_t lerr;
pp_err_t pp_err;
// Highest scoped variable cut off point
if (file_source.has_value())
source_str = file_source.value();
else
{
cerr << "ERROR: file `" << source_name << "` does not exist!" << endl;
ret = -1;
goto end;
}
original = string_view{source_str};
src = string_view{source_str};
lerr = tokenise_buffer(src, tokens);
if (lerr.type != lerr_type_t::OK)
{
cerr << source_name << ":" << lerr << endl;
ret = 255 - static_cast<int>(lerr.type);
goto end;
}
else
{
#if VERBOSE >= 1
printf("[%sLEXER%s]: %lu bytes -> %lu tokens\n", TERM_GREEN, TERM_RESET,
source_str.size(), tokens.size());
#endif
#if VERBOSE == 2
printf("[%sLEXER%s]: Tokens "
"parsed:\n----------------------------------------------------------"
"----------------------\n",
TERM_GREEN, TERM_RESET);
for (auto token : tokens)
cout << "\t" << *token << endl;
printf("-------------------------------------------------------------"
"-------------------\n");
#endif
}
// preprocessing
pp_err = preprocesser(tokens, preprocessed_tokens);
if (pp_err.type != pp_err_type_t::OK)
{
cerr << source_name << ":" << pp_err.reference->line << ":"
<< pp_err.reference->column << ": " << pp_err << endl;
ret = 255 - static_cast<int>(pp_err.type);
goto end;
}
else
{
#if VERBOSE >= 1
printf("[%sPREPROCESSOR%s]: %lu tokens -> %lu tokens\n", TERM_GREEN,
TERM_RESET, tokens.size(), preprocessed_tokens.size());
#endif
#if VERBOSE == 2
printf("[%sPREPROCESSOR%s]: Processed tokens: "
"\n-----------------------------------------------------------------"
"---------------\n",
TERM_GREEN, TERM_RESET);
for (auto token : preprocessed_tokens)
cout << "\t" << *token << endl;
printf("-------------------------------------------------------------"
"-------------------\n");
#endif
}
end:
for (auto token : tokens)
delete token;
for (auto token : preprocessed_tokens)
delete token;
return ret;
}
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