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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>
#include <lib/inst.h>
#include "./base.hpp"
#include "./lexer.hpp"
#include "./preprocesser.hpp"
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 *file_name = argv[1];
auto file_source = read_file(file_name);
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
{
std::cerr << "ERROR: file `" << file_name << "` does not exist!"
<< std::endl;
ret = -1;
goto end;
}
original = string_view{source_str};
src = string_view{source_str};
lerr = tokenise_buffer(src, tokens);
if (lerr != lerr_t::OK)
{
size_t col = 0, line = 1;
// TODO: Fix this UB (probably a change in API)
auto diff = src.begin() - original.begin();
for (auto i = 0; i < diff; ++i)
{
if (source_str[i] == '\n')
{
col = 0;
++line;
}
else
++col;
}
std::cerr << file_name << ":" << line << ":" << col << ":"
<< lerr_as_cstr(lerr) << std::endl;
ret = 255 - static_cast<int>(lerr);
goto end;
}
else
{
std::cout << "LEXER: \n"
"-------------------------------------------------------------"
"-------------------\n";
for (auto token : tokens)
std::cout << "\t" << *token << std::endl;
std::cout << "-------------------------------------------------------------"
"-------------------\n";
}
// preprocessing
std::tie(preprocessed_tokens, pp_err) = preprocesser(tokens);
if (pp_err.type != pp_err_type_t::OK)
{
std::cerr << file_name << ":" << pp_err.reference->line << ":"
<< pp_err.reference->column << ":" << pp_err << std::endl;
ret = 255 - static_cast<int>(pp_err.type);
goto end;
}
else
{
std::cout << "PREPROCESSER: \n"
"-------------------------------------------------------------"
"-------------------\n";
for (auto token : preprocessed_tokens)
std::cout << "\t" << *token << std::endl;
std::cout << "-------------------------------------------------------------"
"-------------------\n";
}
end:
for (auto token : tokens)
delete token;
for (auto token : preprocessed_tokens)
delete token;
return ret;
}
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